diff options
Diffstat (limited to 'arch/m68k/kernel')
39 files changed, 3230 insertions, 4790 deletions
diff --git a/arch/m68k/kernel/Makefile b/arch/m68k/kernel/Makefile index 40d29a788b0..e47778f8588 100644 --- a/arch/m68k/kernel/Makefile +++ b/arch/m68k/kernel/Makefile @@ -13,13 +13,17 @@ extra-$(CONFIG_SUN3X) := head.o extra-$(CONFIG_SUN3) := sun3-head.o extra-y += vmlinux.lds -obj-y := entry.o init_task.o irq.o m68k_ksyms.o module.o process.o ptrace.o +obj-y := entry.o irq.o m68k_ksyms.o module.o process.o ptrace.o obj-y += setup.o signal.o sys_m68k.o syscalltable.o time.o traps.o obj-$(CONFIG_MMU_MOTOROLA) += ints.o vectors.o obj-$(CONFIG_MMU_SUN3) += ints.o vectors.o +obj-$(CONFIG_PCI) += pcibios.o -ifndef CONFIG_MMU_SUN3 -obj-y += dma.o -endif +obj-$(CONFIG_HAS_DMA) += dma.o + +obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o +obj-$(CONFIG_BOOTINFO_PROC) += bootinfo_proc.o + +obj-$(CONFIG_EARLY_PRINTK) += early_printk.o diff --git a/arch/m68k/kernel/asm-offsets.c b/arch/m68k/kernel/asm-offsets.c index a972b00cd77..3a386341aa6 100644 --- a/arch/m68k/kernel/asm-offsets.c +++ b/arch/m68k/kernel/asm-offsets.c @@ -77,7 +77,7 @@ int main(void) DEFINE(BIR_SIZE, offsetof(struct bi_record, size)); DEFINE(BIR_DATA, offsetof(struct bi_record, data)); - /* offsets into font_desc (drivers/video/console/font.h) */ + /* offsets into the font_desc struct */ DEFINE(FONT_DESC_IDX, offsetof(struct font_desc, idx)); DEFINE(FONT_DESC_NAME, offsetof(struct font_desc, name)); DEFINE(FONT_DESC_WIDTH, offsetof(struct font_desc, width)); @@ -98,6 +98,9 @@ int main(void) DEFINE(CIABBASE, &ciab); DEFINE(C_PRA, offsetof(struct CIA, pra)); DEFINE(ZTWOBASE, zTwoBase); + + /* enum m68k_fixup_type */ + DEFINE(M68K_FIXUP_MEMOFFSET, m68k_fixup_memoffset); #endif return 0; diff --git a/arch/m68k/kernel/bootinfo_proc.c b/arch/m68k/kernel/bootinfo_proc.c new file mode 100644 index 00000000000..7ee853e1432 --- /dev/null +++ b/arch/m68k/kernel/bootinfo_proc.c @@ -0,0 +1,80 @@ +/* + * Based on arch/arm/kernel/atags_proc.c + */ + +#include <linux/fs.h> +#include <linux/init.h> +#include <linux/printk.h> +#include <linux/proc_fs.h> +#include <linux/slab.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> +#include <asm/byteorder.h> + + +static char bootinfo_tmp[1536] __initdata; + +static void *bootinfo_copy; +static size_t bootinfo_size; + +static ssize_t bootinfo_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + return simple_read_from_buffer(buf, count, ppos, bootinfo_copy, + bootinfo_size); +} + +static const struct file_operations bootinfo_fops = { + .read = bootinfo_read, + .llseek = default_llseek, +}; + +void __init save_bootinfo(const struct bi_record *bi) +{ + const void *start = bi; + size_t size = sizeof(bi->tag); + + while (be16_to_cpu(bi->tag) != BI_LAST) { + uint16_t n = be16_to_cpu(bi->size); + size += n; + bi = (struct bi_record *)((unsigned long)bi + n); + } + + if (size > sizeof(bootinfo_tmp)) { + pr_err("Cannot save %zu bytes of bootinfo\n", size); + return; + } + + pr_info("Saving %zu bytes of bootinfo\n", size); + memcpy(bootinfo_tmp, start, size); + bootinfo_size = size; +} + +static int __init init_bootinfo_procfs(void) +{ + /* + * This cannot go into save_bootinfo() because kmalloc and proc don't + * work yet when it is called. + */ + struct proc_dir_entry *pde; + + if (!bootinfo_size) + return -EINVAL; + + bootinfo_copy = kmalloc(bootinfo_size, GFP_KERNEL); + if (!bootinfo_copy) + return -ENOMEM; + + memcpy(bootinfo_copy, bootinfo_tmp, bootinfo_size); + + pde = proc_create_data("bootinfo", 0400, NULL, &bootinfo_fops, NULL); + if (!pde) { + kfree(bootinfo_copy); + return -ENOMEM; + } + + return 0; +} + +arch_initcall(init_bootinfo_procfs); diff --git a/arch/m68k/kernel/dma.c b/arch/m68k/kernel/dma.c index 90e8cb726c8..e546a5534dd 100644 --- a/arch/m68k/kernel/dma.c +++ b/arch/m68k/kernel/dma.c @@ -1,5 +1,165 @@ -#ifdef CONFIG_MMU -#include "dma_mm.c" +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#undef DEBUG + +#include <linux/dma-mapping.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/scatterlist.h> +#include <linux/slab.h> +#include <linux/vmalloc.h> +#include <linux/export.h> + +#include <asm/pgalloc.h> + +#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE) + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *handle, gfp_t flag) +{ + struct page *page, **map; + pgprot_t pgprot; + void *addr; + int i, order; + + pr_debug("dma_alloc_coherent: %d,%x\n", size, flag); + + size = PAGE_ALIGN(size); + order = get_order(size); + + page = alloc_pages(flag, order); + if (!page) + return NULL; + + *handle = page_to_phys(page); + map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA); + if (!map) { + __free_pages(page, order); + return NULL; + } + split_page(page, order); + + order = 1 << order; + size >>= PAGE_SHIFT; + map[0] = page; + for (i = 1; i < size; i++) + map[i] = page + i; + for (; i < order; i++) + __free_page(page + i); + pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); + if (CPU_IS_040_OR_060) + pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S; + else + pgprot_val(pgprot) |= _PAGE_NOCACHE030; + addr = vmap(map, size, VM_MAP, pgprot); + kfree(map); + + return addr; +} + +void dma_free_coherent(struct device *dev, size_t size, + void *addr, dma_addr_t handle) +{ + pr_debug("dma_free_coherent: %p, %x\n", addr, handle); + vfree(addr); +} + #else -#include "dma_no.c" -#endif + +#include <asm/cacheflush.h> + +void *dma_alloc_coherent(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp) +{ + void *ret; + /* ignore region specifiers */ + gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); + + if (dev == NULL || (*dev->dma_mask < 0xffffffff)) + gfp |= GFP_DMA; + ret = (void *)__get_free_pages(gfp, get_order(size)); + + if (ret != NULL) { + memset(ret, 0, size); + *dma_handle = virt_to_phys(ret); + } + return ret; +} + +void dma_free_coherent(struct device *dev, size_t size, + void *vaddr, dma_addr_t dma_handle) +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */ + +EXPORT_SYMBOL(dma_alloc_coherent); +EXPORT_SYMBOL(dma_free_coherent); + +void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) +{ + switch (dir) { + case DMA_BIDIRECTIONAL: + case DMA_TO_DEVICE: + cache_push(handle, size); + break; + case DMA_FROM_DEVICE: + cache_clear(handle, size); + break; + default: + if (printk_ratelimit()) + printk("dma_sync_single_for_device: unsupported dir %u\n", dir); + break; + } +} +EXPORT_SYMBOL(dma_sync_single_for_device); + +void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + int i; + + for (i = 0; i < nents; sg++, i++) + dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); +} +EXPORT_SYMBOL(dma_sync_sg_for_device); + +dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = virt_to_bus(addr); + + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_single); + +dma_addr_t dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir) +{ + dma_addr_t handle = page_to_phys(page) + offset; + + dma_sync_single_for_device(dev, handle, size, dir); + return handle; +} +EXPORT_SYMBOL(dma_map_page); + +int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, + enum dma_data_direction dir) +{ + int i; + + for (i = 0; i < nents; sg++, i++) { + sg->dma_address = sg_phys(sg); + dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); + } + return nents; +} +EXPORT_SYMBOL(dma_map_sg); diff --git a/arch/m68k/kernel/dma_mm.c b/arch/m68k/kernel/dma_mm.c deleted file mode 100644 index a3c471b523f..00000000000 --- a/arch/m68k/kernel/dma_mm.c +++ /dev/null @@ -1,131 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -#undef DEBUG - -#include <linux/dma-mapping.h> -#include <linux/device.h> -#include <linux/kernel.h> -#include <linux/scatterlist.h> -#include <linux/slab.h> -#include <linux/vmalloc.h> -#include <linux/export.h> - -#include <asm/pgalloc.h> - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *handle, gfp_t flag) -{ - struct page *page, **map; - pgprot_t pgprot; - void *addr; - int i, order; - - pr_debug("dma_alloc_coherent: %d,%x\n", size, flag); - - size = PAGE_ALIGN(size); - order = get_order(size); - - page = alloc_pages(flag, order); - if (!page) - return NULL; - - *handle = page_to_phys(page); - map = kmalloc(sizeof(struct page *) << order, flag & ~__GFP_DMA); - if (!map) { - __free_pages(page, order); - return NULL; - } - split_page(page, order); - - order = 1 << order; - size >>= PAGE_SHIFT; - map[0] = page; - for (i = 1; i < size; i++) - map[i] = page + i; - for (; i < order; i++) - __free_page(page + i); - pgprot = __pgprot(_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_DIRTY); - if (CPU_IS_040_OR_060) - pgprot_val(pgprot) |= _PAGE_GLOBAL040 | _PAGE_NOCACHE_S; - else - pgprot_val(pgprot) |= _PAGE_NOCACHE030; - addr = vmap(map, size, VM_MAP, pgprot); - kfree(map); - - return addr; -} -EXPORT_SYMBOL(dma_alloc_coherent); - -void dma_free_coherent(struct device *dev, size_t size, - void *addr, dma_addr_t handle) -{ - pr_debug("dma_free_coherent: %p, %x\n", addr, handle); - vfree(addr); -} -EXPORT_SYMBOL(dma_free_coherent); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ - switch (dir) { - case DMA_TO_DEVICE: - cache_push(handle, size); - break; - case DMA_FROM_DEVICE: - cache_clear(handle, size); - break; - default: - if (printk_ratelimit()) - printk("dma_sync_single_for_device: unsupported dir %u\n", dir); - break; - } -} -EXPORT_SYMBOL(dma_sync_single_for_device); - -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) -{ - int i; - - for (i = 0; i < nents; sg++, i++) - dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); -} -EXPORT_SYMBOL(dma_sync_sg_for_device); - -dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = virt_to_bus(addr); - - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_single); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = page_to_phys(page) + offset; - - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_page); - -int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) -{ - int i; - - for (i = 0; i < nents; sg++, i++) { - sg->dma_address = sg_phys(sg); - dma_sync_single_for_device(dev, sg->dma_address, sg->length, dir); - } - return nents; -} -EXPORT_SYMBOL(dma_map_sg); diff --git a/arch/m68k/kernel/dma_no.c b/arch/m68k/kernel/dma_no.c deleted file mode 100644 index f1dc3fc71bc..00000000000 --- a/arch/m68k/kernel/dma_no.c +++ /dev/null @@ -1,75 +0,0 @@ -/* - * Dynamic DMA mapping support. - * - * We never have any address translations to worry about, so this - * is just alloc/free. - */ - -#include <linux/types.h> -#include <linux/gfp.h> -#include <linux/mm.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/export.h> -#include <asm/cacheflush.h> - -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) -{ - void *ret; - /* ignore region specifiers */ - gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); - - if (dev == NULL || (*dev->dma_mask < 0xffffffff)) - gfp |= GFP_DMA; - ret = (void *)__get_free_pages(gfp, get_order(size)); - - if (ret != NULL) { - memset(ret, 0, size); - *dma_handle = virt_to_phys(ret); - } - return ret; -} - -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - free_pages((unsigned long)vaddr, get_order(size)); -} - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ - switch (dir) { - case DMA_TO_DEVICE: - flush_dcache_range(handle, size); - break; - case DMA_FROM_DEVICE: - /* Should be clear already */ - break; - default: - if (printk_ratelimit()) - printk("dma_sync_single_for_device: unsupported dir %u\n", dir); - break; - } -} - -EXPORT_SYMBOL(dma_sync_single_for_device); -dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = virt_to_phys(addr); - flush_dcache_range(handle, size); - return handle; -} -EXPORT_SYMBOL(dma_map_single); - -dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) -{ - dma_addr_t handle = page_to_phys(page) + offset; - dma_sync_single_for_device(dev, handle, size, dir); - return handle; -} -EXPORT_SYMBOL(dma_map_page); diff --git a/arch/m68k/kernel/early_printk.c b/arch/m68k/kernel/early_printk.c new file mode 100644 index 00000000000..ff9708d7192 --- /dev/null +++ b/arch/m68k/kernel/early_printk.c @@ -0,0 +1,67 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (c) 2014 Finn Thain + */ + +#include <linux/kernel.h> +#include <linux/console.h> +#include <linux/init.h> +#include <linux/string.h> +#include <asm/setup.h> + +extern void mvme16x_cons_write(struct console *co, + const char *str, unsigned count); + +asmlinkage void __init debug_cons_nputs(const char *s, unsigned n); + +static void __ref debug_cons_write(struct console *c, + const char *s, unsigned n) +{ +#if !(defined(CONFIG_SUN3) || defined(CONFIG_M68360) || \ + defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)) + if (MACH_IS_MVME16x) + mvme16x_cons_write(c, s, n); + else + debug_cons_nputs(s, n); +#endif +} + +static struct console early_console_instance = { + .name = "debug", + .write = debug_cons_write, + .flags = CON_PRINTBUFFER | CON_BOOT, + .index = -1 +}; + +static int __init setup_early_printk(char *buf) +{ + if (early_console || buf) + return 0; + + early_console = &early_console_instance; + register_console(early_console); + + return 0; +} +early_param("earlyprintk", setup_early_printk); + +/* + * debug_cons_nputs() defined in arch/m68k/kernel/head.S cannot be called + * after init sections are discarded (for platforms that use it). + */ +#if !(defined(CONFIG_SUN3) || defined(CONFIG_M68360) || \ + defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE)) + +static int __init unregister_early_console(void) +{ + if (!early_console || MACH_IS_MVME16x) + return 0; + + return unregister_console(early_console); +} +late_initcall(unregister_early_console); + +#endif diff --git a/arch/m68k/kernel/entry.S b/arch/m68k/kernel/entry.S index b8daf64e347..b54ac7aba85 100644 --- a/arch/m68k/kernel/entry.S +++ b/arch/m68k/kernel/entry.S @@ -1,5 +1,423 @@ -#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE) -#include "entry_mm.S" +/* -*- mode: asm -*- + * + * linux/arch/m68k/kernel/entry.S + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file README.legal in the main directory of this archive + * for more details. + * + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + */ + +/* + * entry.S contains the system-call and fault low-level handling routines. + * This also contains the timer-interrupt handler, as well as all interrupts + * and faults that can result in a task-switch. + * + * NOTE: This code handles signal-recognition, which happens every time + * after a timer-interrupt and after each system call. + * + */ + +/* + * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so + * all pointers that used to be 'current' are now entry + * number 0 in the 'current_set' list. + * + * 6/05/00 RZ: addedd writeback completion after return from sighandler + * for 68040 + */ + +#include <linux/linkage.h> +#include <asm/errno.h> +#include <asm/setup.h> +#include <asm/segment.h> +#include <asm/traps.h> +#include <asm/unistd.h> +#include <asm/asm-offsets.h> +#include <asm/entry.h> + +.globl system_call, buserr, trap, resume +.globl sys_call_table +.globl __sys_fork, __sys_clone, __sys_vfork +.globl bad_interrupt +.globl auto_irqhandler_fixup +.globl user_irqvec_fixup + +.text +ENTRY(__sys_fork) + SAVE_SWITCH_STACK + jbsr sys_fork + lea %sp@(24),%sp + rts + +ENTRY(__sys_clone) + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + jbsr m68k_clone + lea %sp@(28),%sp + rts + +ENTRY(__sys_vfork) + SAVE_SWITCH_STACK + jbsr sys_vfork + lea %sp@(24),%sp + rts + +ENTRY(sys_sigreturn) + SAVE_SWITCH_STACK + jbsr do_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(sys_rt_sigreturn) + SAVE_SWITCH_STACK + jbsr do_rt_sigreturn + RESTORE_SWITCH_STACK + rts + +ENTRY(buserr) + SAVE_ALL_INT + GET_CURRENT(%d0) + movel %sp,%sp@- | stack frame pointer argument + jbsr buserr_c + addql #4,%sp + jra ret_from_exception + +ENTRY(trap) + SAVE_ALL_INT + GET_CURRENT(%d0) + movel %sp,%sp@- | stack frame pointer argument + jbsr trap_c + addql #4,%sp + jra ret_from_exception + + | After a fork we jump here directly from resume, + | so that %d1 contains the previous task + | schedule_tail now used regardless of CONFIG_SMP +ENTRY(ret_from_fork) + movel %d1,%sp@- + jsr schedule_tail + addql #4,%sp + jra ret_from_exception + +ENTRY(ret_from_kernel_thread) + | a3 contains the kernel thread payload, d7 - its argument + movel %d1,%sp@- + jsr schedule_tail + movel %d7,(%sp) + jsr %a3@ + addql #4,%sp + jra ret_from_exception + +#if defined(CONFIG_COLDFIRE) || !defined(CONFIG_MMU) + +#ifdef TRAP_DBG_INTERRUPT + +.globl dbginterrupt +ENTRY(dbginterrupt) + SAVE_ALL_INT + GET_CURRENT(%d0) + movel %sp,%sp@- /* stack frame pointer argument */ + jsr dbginterrupt_c + addql #4,%sp + jra ret_from_exception +#endif + +ENTRY(reschedule) + /* save top of frame */ + pea %sp@ + jbsr set_esp0 + addql #4,%sp + pea ret_from_exception + jmp schedule + +ENTRY(ret_from_user_signal) + moveq #__NR_sigreturn,%d0 + trap #0 + +ENTRY(ret_from_user_rt_signal) + movel #__NR_rt_sigreturn,%d0 + trap #0 + #else -#include "entry_no.S" + +do_trace_entry: + movel #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace + RESTORE_SWITCH_STACK + addql #4,%sp + movel %sp@(PT_OFF_ORIG_D0),%d0 + cmpl #NR_syscalls,%d0 + jcs syscall +badsys: + movel #-ENOSYS,%sp@(PT_OFF_D0) + jra ret_from_syscall + +do_trace_exit: + subql #4,%sp + SAVE_SWITCH_STACK + jbsr syscall_trace + RESTORE_SWITCH_STACK + addql #4,%sp + jra .Lret_from_exception + +ENTRY(ret_from_signal) + movel %curptr@(TASK_STACK),%a1 + tstb %a1@(TINFO_FLAGS+2) + jge 1f + jbsr syscall_trace +1: RESTORE_SWITCH_STACK + addql #4,%sp +/* on 68040 complete pending writebacks if any */ +#ifdef CONFIG_M68040 + bfextu %sp@(PT_OFF_FORMATVEC){#0,#4},%d0 + subql #7,%d0 | bus error frame ? + jbne 1f + movel %sp,%sp@- + jbsr berr_040cleanup + addql #4,%sp +1: +#endif + jra .Lret_from_exception + +ENTRY(system_call) + SAVE_ALL_SYS + + GET_CURRENT(%d1) + movel %d1,%a1 + + | save top of frame + movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) + + | syscall trace? + tstb %a1@(TINFO_FLAGS+2) + jmi do_trace_entry + cmpl #NR_syscalls,%d0 + jcc badsys +syscall: + jbsr @(sys_call_table,%d0:l:4)@(0) + movel %d0,%sp@(PT_OFF_D0) | save the return value +ret_from_syscall: + |oriw #0x0700,%sr + movel %curptr@(TASK_STACK),%a1 + movew %a1@(TINFO_FLAGS+2),%d0 + jne syscall_exit_work +1: RESTORE_ALL + +syscall_exit_work: + btst #5,%sp@(PT_OFF_SR) | check if returning to kernel + bnes 1b | if so, skip resched, signals + lslw #1,%d0 + jcs do_trace_exit + jmi do_delayed_trace + lslw #8,%d0 + jne do_signal_return + pea resume_userspace + jra schedule + + +ENTRY(ret_from_exception) +.Lret_from_exception: + btst #5,%sp@(PT_OFF_SR) | check if returning to kernel + bnes 1f | if so, skip resched, signals + | only allow interrupts when we are really the last one on the + | kernel stack, otherwise stack overflow can occur during + | heavy interrupt load + andw #ALLOWINT,%sr + +resume_userspace: + movel %curptr@(TASK_STACK),%a1 + moveb %a1@(TINFO_FLAGS+3),%d0 + jne exit_work +1: RESTORE_ALL + +exit_work: + | save top of frame + movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) + lslb #1,%d0 + jne do_signal_return + pea resume_userspace + jra schedule + + +do_signal_return: + |andw #ALLOWINT,%sr + subql #4,%sp | dummy return address + SAVE_SWITCH_STACK + pea %sp@(SWITCH_STACK_SIZE) + bsrl do_notify_resume + addql #4,%sp + RESTORE_SWITCH_STACK + addql #4,%sp + jbra resume_userspace + +do_delayed_trace: + bclr #7,%sp@(PT_OFF_SR) | clear trace bit in SR + pea 1 | send SIGTRAP + movel %curptr,%sp@- + pea LSIGTRAP + jbsr send_sig + addql #8,%sp + addql #4,%sp + jbra resume_userspace + + +/* This is the main interrupt handler for autovector interrupts */ + +ENTRY(auto_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + | put exception # in d0 + bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 + subw #VEC_SPUR,%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack +auto_irqhandler_fixup = . + 2 + jsr do_IRQ | process the IRQ + addql #8,%sp | pop parameters off stack + jra ret_from_exception + +/* Handler for user defined interrupt vectors */ + +ENTRY(user_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + | put exception # in d0 + bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 +user_irqvec_fixup = . + 2 + subw #VEC_USER,%d0 + + movel %sp,%sp@- + movel %d0,%sp@- | put vector # on stack + jsr do_IRQ | process the IRQ + addql #8,%sp | pop parameters off stack + jra ret_from_exception + +/* Handler for uninitialized and spurious interrupts */ + +ENTRY(bad_inthandler) + SAVE_ALL_INT + GET_CURRENT(%d0) + + movel %sp,%sp@- + jsr handle_badint + addql #4,%sp + jra ret_from_exception + +resume: + /* + * Beware - when entering resume, prev (the current task) is + * in a0, next (the new task) is in a1,so don't change these + * registers until their contents are no longer needed. + */ + + /* save sr */ + movew %sr,%a0@(TASK_THREAD+THREAD_SR) + + /* save fs (sfc,%dfc) (may be pointing to kernel memory) */ + movec %sfc,%d0 + movew %d0,%a0@(TASK_THREAD+THREAD_FS) + + /* save usp */ + /* it is better to use a movel here instead of a movew 8*) */ + movec %usp,%d0 + movel %d0,%a0@(TASK_THREAD+THREAD_USP) + + /* save non-scratch registers on stack */ + SAVE_SWITCH_STACK + + /* save current kernel stack pointer */ + movel %sp,%a0@(TASK_THREAD+THREAD_KSP) + + /* save floating point context */ +#ifndef CONFIG_M68KFPU_EMU_ONLY +#ifdef CONFIG_M68KFPU_EMU + tstl m68k_fputype + jeq 3f +#endif + fsave %a0@(TASK_THREAD+THREAD_FPSTATE) + +#if defined(CONFIG_M68060) +#if !defined(CPU_M68060_ONLY) + btst #3,m68k_cputype+3 + beqs 1f +#endif + /* The 060 FPU keeps status in bits 15-8 of the first longword */ + tstb %a0@(TASK_THREAD+THREAD_FPSTATE+2) + jeq 3f +#if !defined(CPU_M68060_ONLY) + jra 2f +#endif +#endif /* CONFIG_M68060 */ +#if !defined(CPU_M68060_ONLY) +1: tstb %a0@(TASK_THREAD+THREAD_FPSTATE) + jeq 3f +#endif +2: fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG) + fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL) +3: +#endif /* CONFIG_M68KFPU_EMU_ONLY */ + /* Return previous task in %d1 */ + movel %curptr,%d1 + + /* switch to new task (a1 contains new task) */ + movel %a1,%curptr + + /* restore floating point context */ +#ifndef CONFIG_M68KFPU_EMU_ONLY +#ifdef CONFIG_M68KFPU_EMU + tstl m68k_fputype + jeq 4f +#endif +#if defined(CONFIG_M68060) +#if !defined(CPU_M68060_ONLY) + btst #3,m68k_cputype+3 + beqs 1f +#endif + /* The 060 FPU keeps status in bits 15-8 of the first longword */ + tstb %a1@(TASK_THREAD+THREAD_FPSTATE+2) + jeq 3f +#if !defined(CPU_M68060_ONLY) + jra 2f +#endif +#endif /* CONFIG_M68060 */ +#if !defined(CPU_M68060_ONLY) +1: tstb %a1@(TASK_THREAD+THREAD_FPSTATE) + jeq 3f #endif +2: fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7 + fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar +3: frestore %a1@(TASK_THREAD+THREAD_FPSTATE) +4: +#endif /* CONFIG_M68KFPU_EMU_ONLY */ + + /* restore the kernel stack pointer */ + movel %a1@(TASK_THREAD+THREAD_KSP),%sp + + /* restore non-scratch registers */ + RESTORE_SWITCH_STACK + + /* restore user stack pointer */ + movel %a1@(TASK_THREAD+THREAD_USP),%a0 + movel %a0,%usp + + /* restore fs (sfc,%dfc) */ + movew %a1@(TASK_THREAD+THREAD_FS),%a0 + movec %a0,%sfc + movec %a0,%dfc + + /* restore status register */ + movew %a1@(TASK_THREAD+THREAD_SR),%sr + + rts + +#endif /* CONFIG_MMU && !CONFIG_COLDFIRE */ diff --git a/arch/m68k/kernel/entry_mm.S b/arch/m68k/kernel/entry_mm.S deleted file mode 100644 index 675a854966a..00000000000 --- a/arch/m68k/kernel/entry_mm.S +++ /dev/null @@ -1,419 +0,0 @@ -/* -*- mode: asm -*- - * - * linux/arch/m68k/kernel/entry.S - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file README.legal in the main directory of this archive - * for more details. - * - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - */ - -/* - * entry.S contains the system-call and fault low-level handling routines. - * This also contains the timer-interrupt handler, as well as all interrupts - * and faults that can result in a task-switch. - * - * NOTE: This code handles signal-recognition, which happens every time - * after a timer-interrupt and after each system call. - * - */ - -/* - * 12/03/96 Jes: Currently we only support m68k single-cpu systems, so - * all pointers that used to be 'current' are now entry - * number 0 in the 'current_set' list. - * - * 6/05/00 RZ: addedd writeback completion after return from sighandler - * for 68040 - */ - -#include <linux/linkage.h> -#include <asm/entry.h> -#include <asm/errno.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/traps.h> -#include <asm/unistd.h> - -#include <asm/asm-offsets.h> - -.globl system_call, buserr, trap, resume -.globl sys_call_table -.globl sys_fork, sys_clone, sys_vfork -.globl ret_from_interrupt, bad_interrupt -.globl auto_irqhandler_fixup -.globl user_irqvec_fixup - -.text -ENTRY(buserr) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- | stack frame pointer argument - bsrl buserr_c - addql #4,%sp - jra .Lret_from_exception - -ENTRY(trap) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- | stack frame pointer argument - bsrl trap_c - addql #4,%sp - jra .Lret_from_exception - - | After a fork we jump here directly from resume, - | so that %d1 contains the previous task - | schedule_tail now used regardless of CONFIG_SMP -ENTRY(ret_from_fork) - movel %d1,%sp@- - jsr schedule_tail - addql #4,%sp - jra .Lret_from_exception - -do_trace_entry: - movel #-ENOSYS,%sp@(PT_OFF_D0)| needed for strace - subql #4,%sp - SAVE_SWITCH_STACK - jbsr syscall_trace - RESTORE_SWITCH_STACK - addql #4,%sp - movel %sp@(PT_OFF_ORIG_D0),%d0 - cmpl #NR_syscalls,%d0 - jcs syscall -badsys: - movel #-ENOSYS,%sp@(PT_OFF_D0) - jra ret_from_syscall - -do_trace_exit: - subql #4,%sp - SAVE_SWITCH_STACK - jbsr syscall_trace - RESTORE_SWITCH_STACK - addql #4,%sp - jra .Lret_from_exception - -ENTRY(ret_from_signal) - movel %curptr@(TASK_STACK),%a1 - tstb %a1@(TINFO_FLAGS+2) - jge 1f - jbsr syscall_trace -1: RESTORE_SWITCH_STACK - addql #4,%sp -/* on 68040 complete pending writebacks if any */ -#ifdef CONFIG_M68040 - bfextu %sp@(PT_OFF_FORMATVEC){#0,#4},%d0 - subql #7,%d0 | bus error frame ? - jbne 1f - movel %sp,%sp@- - jbsr berr_040cleanup - addql #4,%sp -1: -#endif - jra .Lret_from_exception - -ENTRY(system_call) - SAVE_ALL_SYS - - GET_CURRENT(%d1) - movel %d1,%a1 - - | save top of frame - movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) - - | syscall trace? - tstb %a1@(TINFO_FLAGS+2) - jmi do_trace_entry - cmpl #NR_syscalls,%d0 - jcc badsys -syscall: - jbsr @(sys_call_table,%d0:l:4)@(0) - movel %d0,%sp@(PT_OFF_D0) | save the return value -ret_from_syscall: - |oriw #0x0700,%sr - movel %curptr@(TASK_STACK),%a1 - movew %a1@(TINFO_FLAGS+2),%d0 - jne syscall_exit_work -1: RESTORE_ALL - -syscall_exit_work: - btst #5,%sp@(PT_OFF_SR) | check if returning to kernel - bnes 1b | if so, skip resched, signals - lslw #1,%d0 - jcs do_trace_exit - jmi do_delayed_trace - lslw #8,%d0 - jmi do_signal_return - pea resume_userspace - jra schedule - - -ENTRY(ret_from_exception) -.Lret_from_exception: - btst #5,%sp@(PT_OFF_SR) | check if returning to kernel - bnes 1f | if so, skip resched, signals - | only allow interrupts when we are really the last one on the - | kernel stack, otherwise stack overflow can occur during - | heavy interrupt load - andw #ALLOWINT,%sr - -resume_userspace: - movel %curptr@(TASK_STACK),%a1 - moveb %a1@(TINFO_FLAGS+3),%d0 - jne exit_work -1: RESTORE_ALL - -exit_work: - | save top of frame - movel %sp,%curptr@(TASK_THREAD+THREAD_ESP0) - lslb #1,%d0 - jmi do_signal_return - pea resume_userspace - jra schedule - - -do_signal_return: - |andw #ALLOWINT,%sr - subql #4,%sp | dummy return address - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - bsrl do_signal - addql #4,%sp - RESTORE_SWITCH_STACK - addql #4,%sp - jbra resume_userspace - -do_delayed_trace: - bclr #7,%sp@(PT_OFF_SR) | clear trace bit in SR - pea 1 | send SIGTRAP - movel %curptr,%sp@- - pea LSIGTRAP - jbsr send_sig - addql #8,%sp - addql #4,%sp - jbra resume_userspace - - -/* This is the main interrupt handler for autovector interrupts */ - -ENTRY(auto_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %d0,%a1 - addqb #1,%a1@(TINFO_PREEMPT+1) - | put exception # in d0 - bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 - subw #VEC_SPUR,%d0 - - movel %sp,%sp@- - movel %d0,%sp@- | put vector # on stack -auto_irqhandler_fixup = . + 2 - jsr do_IRQ | process the IRQ - addql #8,%sp | pop parameters off stack - -ret_from_interrupt: - movel %curptr@(TASK_STACK),%a1 - subqb #1,%a1@(TINFO_PREEMPT+1) - jeq ret_from_last_interrupt -2: RESTORE_ALL - - ALIGN -ret_from_last_interrupt: - moveq #(~ALLOWINT>>8)&0xff,%d0 - andb %sp@(PT_OFF_SR),%d0 - jne 2b - - /* check if we need to do software interrupts */ - tstl irq_stat+CPUSTAT_SOFTIRQ_PENDING - jeq .Lret_from_exception - pea ret_from_exception - jra do_softirq - -/* Handler for user defined interrupt vectors */ - -ENTRY(user_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %d0,%a1 - addqb #1,%a1@(TINFO_PREEMPT+1) - | put exception # in d0 - bfextu %sp@(PT_OFF_FORMATVEC){#4,#10},%d0 -user_irqvec_fixup = . + 2 - subw #VEC_USER,%d0 - - movel %sp,%sp@- - movel %d0,%sp@- | put vector # on stack - jsr do_IRQ | process the IRQ - addql #8,%sp | pop parameters off stack - - movel %curptr@(TASK_STACK),%a1 - subqb #1,%a1@(TINFO_PREEMPT+1) - jeq ret_from_last_interrupt - RESTORE_ALL - -/* Handler for uninitialized and spurious interrupts */ - -ENTRY(bad_inthandler) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %d0,%a1 - addqb #1,%a1@(TINFO_PREEMPT+1) - - movel %sp,%sp@- - jsr handle_badint - addql #4,%sp - - movel %curptr@(TASK_STACK),%a1 - subqb #1,%a1@(TINFO_PREEMPT+1) - jeq ret_from_last_interrupt - RESTORE_ALL - - -ENTRY(sys_fork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_fork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_clone) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_clone - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_vfork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_vfork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_sigreturn) - SAVE_SWITCH_STACK - jbsr do_sigreturn - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_rt_sigreturn) - SAVE_SWITCH_STACK - jbsr do_rt_sigreturn - RESTORE_SWITCH_STACK - rts - -resume: - /* - * Beware - when entering resume, prev (the current task) is - * in a0, next (the new task) is in a1,so don't change these - * registers until their contents are no longer needed. - */ - - /* save sr */ - movew %sr,%a0@(TASK_THREAD+THREAD_SR) - - /* save fs (sfc,%dfc) (may be pointing to kernel memory) */ - movec %sfc,%d0 - movew %d0,%a0@(TASK_THREAD+THREAD_FS) - - /* save usp */ - /* it is better to use a movel here instead of a movew 8*) */ - movec %usp,%d0 - movel %d0,%a0@(TASK_THREAD+THREAD_USP) - - /* save non-scratch registers on stack */ - SAVE_SWITCH_STACK - - /* save current kernel stack pointer */ - movel %sp,%a0@(TASK_THREAD+THREAD_KSP) - - /* save floating point context */ -#ifndef CONFIG_M68KFPU_EMU_ONLY -#ifdef CONFIG_M68KFPU_EMU - tstl m68k_fputype - jeq 3f -#endif - fsave %a0@(TASK_THREAD+THREAD_FPSTATE) - -#if defined(CONFIG_M68060) -#if !defined(CPU_M68060_ONLY) - btst #3,m68k_cputype+3 - beqs 1f -#endif - /* The 060 FPU keeps status in bits 15-8 of the first longword */ - tstb %a0@(TASK_THREAD+THREAD_FPSTATE+2) - jeq 3f -#if !defined(CPU_M68060_ONLY) - jra 2f -#endif -#endif /* CONFIG_M68060 */ -#if !defined(CPU_M68060_ONLY) -1: tstb %a0@(TASK_THREAD+THREAD_FPSTATE) - jeq 3f -#endif -2: fmovemx %fp0-%fp7,%a0@(TASK_THREAD+THREAD_FPREG) - fmoveml %fpcr/%fpsr/%fpiar,%a0@(TASK_THREAD+THREAD_FPCNTL) -3: -#endif /* CONFIG_M68KFPU_EMU_ONLY */ - /* Return previous task in %d1 */ - movel %curptr,%d1 - - /* switch to new task (a1 contains new task) */ - movel %a1,%curptr - - /* restore floating point context */ -#ifndef CONFIG_M68KFPU_EMU_ONLY -#ifdef CONFIG_M68KFPU_EMU - tstl m68k_fputype - jeq 4f -#endif -#if defined(CONFIG_M68060) -#if !defined(CPU_M68060_ONLY) - btst #3,m68k_cputype+3 - beqs 1f -#endif - /* The 060 FPU keeps status in bits 15-8 of the first longword */ - tstb %a1@(TASK_THREAD+THREAD_FPSTATE+2) - jeq 3f -#if !defined(CPU_M68060_ONLY) - jra 2f -#endif -#endif /* CONFIG_M68060 */ -#if !defined(CPU_M68060_ONLY) -1: tstb %a1@(TASK_THREAD+THREAD_FPSTATE) - jeq 3f -#endif -2: fmovemx %a1@(TASK_THREAD+THREAD_FPREG),%fp0-%fp7 - fmoveml %a1@(TASK_THREAD+THREAD_FPCNTL),%fpcr/%fpsr/%fpiar -3: frestore %a1@(TASK_THREAD+THREAD_FPSTATE) -4: -#endif /* CONFIG_M68KFPU_EMU_ONLY */ - - /* restore the kernel stack pointer */ - movel %a1@(TASK_THREAD+THREAD_KSP),%sp - - /* restore non-scratch registers */ - RESTORE_SWITCH_STACK - - /* restore user stack pointer */ - movel %a1@(TASK_THREAD+THREAD_USP),%a0 - movel %a0,%usp - - /* restore fs (sfc,%dfc) */ - movew %a1@(TASK_THREAD+THREAD_FS),%a0 - movec %a0,%sfc - movec %a0,%dfc - - /* restore status register */ - movew %a1@(TASK_THREAD+THREAD_SR),%sr - - rts - diff --git a/arch/m68k/kernel/entry_no.S b/arch/m68k/kernel/entry_no.S deleted file mode 100644 index d80cba45589..00000000000 --- a/arch/m68k/kernel/entry_no.S +++ /dev/null @@ -1,130 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/entry.S - * - * Copyright (C) 1999-2002, Greg Ungerer (gerg@snapgear.com) - * Copyright (C) 1998 D. Jeff Dionne <jeff@lineo.ca>, - * Kenneth Albanowski <kjahds@kjahds.com>, - * Copyright (C) 2000 Lineo Inc. (www.lineo.com) - * - * Based on: - * - * linux/arch/m68k/kernel/entry.S - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file README.legal in the main directory of this archive - * for more details. - * - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * ColdFire support by Greg Ungerer (gerg@snapgear.com) - * 5307 fixes by David W. Miller - * linux 2.4 support David McCullough <davidm@snapgear.com> - */ - -#include <linux/linkage.h> -#include <asm/errno.h> -#include <asm/setup.h> -#include <asm/segment.h> -#include <asm/asm-offsets.h> -#include <asm/entry.h> -#include <asm/unistd.h> - -.text - -.globl buserr -.globl trap -.globl ret_from_exception -.globl ret_from_signal -.globl sys_fork -.globl sys_clone -.globl sys_vfork - -ENTRY(buserr) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- /* stack frame pointer argument */ - jsr buserr_c - addql #4,%sp - jra ret_from_exception - -ENTRY(trap) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- /* stack frame pointer argument */ - jsr trap_c - addql #4,%sp - jra ret_from_exception - -#ifdef TRAP_DBG_INTERRUPT - -.globl dbginterrupt -ENTRY(dbginterrupt) - SAVE_ALL_INT - GET_CURRENT(%d0) - movel %sp,%sp@- /* stack frame pointer argument */ - jsr dbginterrupt_c - addql #4,%sp - jra ret_from_exception -#endif - -ENTRY(reschedule) - /* save top of frame */ - pea %sp@ - jbsr set_esp0 - addql #4,%sp - pea ret_from_exception - jmp schedule - -ENTRY(ret_from_fork) - movel %d1,%sp@- - jsr schedule_tail - addql #4,%sp - jra ret_from_exception - -ENTRY(sys_fork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_fork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_vfork) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_vfork - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_clone) - SAVE_SWITCH_STACK - pea %sp@(SWITCH_STACK_SIZE) - jbsr m68k_clone - addql #4,%sp - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_sigreturn) - SAVE_SWITCH_STACK - jbsr do_sigreturn - RESTORE_SWITCH_STACK - rts - -ENTRY(sys_rt_sigreturn) - SAVE_SWITCH_STACK - jbsr do_rt_sigreturn - RESTORE_SWITCH_STACK - rts - -ENTRY(ret_from_user_signal) - moveq #__NR_sigreturn,%d0 - trap #0 - -ENTRY(ret_from_user_rt_signal) - movel #__NR_rt_sigreturn,%d0 - trap #0 - diff --git a/arch/m68k/kernel/head.S b/arch/m68k/kernel/head.S index d197e7ff62c..a54788458ca 100644 --- a/arch/m68k/kernel/head.S +++ b/arch/m68k/kernel/head.S @@ -23,7 +23,7 @@ ** 98/04/25 Phil Blundell: added HP300 support ** 1998/08/30 David Kilzer: Added support for font_desc structures ** for linux-2.1.115 -** 9/02/11 Richard Zidlicky: added Q40 support (initial vesion 99/01/01) +** 1999/02/11 Richard Zidlicky: added Q40 support (initial version 99/01/01) ** 2004/05/13 Kars de Jong: Finalised HP300 support ** ** This file is subject to the terms and conditions of the GNU General Public @@ -153,7 +153,7 @@ * ------------ * The console is also able to be turned off. The console in head.S * is specifically for debugging and can be very useful. It is surrounded by - * #ifdef CONSOLE/#endif clauses so it doesn't have to ship in known-good + * #ifdef / #endif clauses so it doesn't have to ship in known-good * kernels. It's basic algorithm is to determine the size of the screen * (in height/width and bit depth) and then use that information for * displaying an 8x8 font or an 8x16 (widthxheight). I prefer the 8x8 for @@ -198,9 +198,8 @@ * CONFIG_xxx: These are the obvious machine configuration defines created * during configuration. These are defined in autoconf.h. * - * CONSOLE: There is support for head.S console in this file. This - * console can talk to a Mac frame buffer, but could easily be extrapolated - * to extend it to support other platforms. + * CONSOLE_DEBUG: Only supports a Mac frame buffer but could easily be + * extended to support other platforms. * * TEST_MMU: This is a test harness for running on any given machine but * getting an MMU dump for another class of machine. The classes of machines @@ -222,7 +221,7 @@ * MMU_PRINT: There is a routine built into head.S that can display the * MMU data structures. It outputs its result through the serial_putc * interface. So where ever that winds up driving data, that's where the - * mmu struct will appear. On the Macintosh that's typically the console. + * mmu struct will appear. * * SERIAL_DEBUG: There are a series of putc() macro statements * scattered through out the code to give progress of status to the @@ -250,40 +249,35 @@ * USE_MFP: Use the ST-MFP port (Modem1) for serial debug. * * Macintosh constants: - * MAC_USE_SCC_A: Use SCC port A (modem) for serial debug and early console. - * MAC_USE_SCC_B: Use SCC port B (printer) for serial debug and early console. + * MAC_USE_SCC_A: Use SCC port A (modem) for serial debug. + * MAC_USE_SCC_B: Use SCC port B (printer) for serial debug. */ #include <linux/linkage.h> #include <linux/init.h> #include <asm/bootinfo.h> +#include <asm/bootinfo-amiga.h> +#include <asm/bootinfo-atari.h> +#include <asm/bootinfo-hp300.h> +#include <asm/bootinfo-mac.h> +#include <asm/bootinfo-q40.h> +#include <asm/bootinfo-vme.h> #include <asm/setup.h> #include <asm/entry.h> #include <asm/pgtable.h> #include <asm/page.h> #include <asm/asm-offsets.h> - #ifdef CONFIG_MAC - -#include <asm/machw.h> - -#ifdef CONFIG_FRAMEBUFFER_CONSOLE -#define CONSOLE -#define CONSOLE_PENGUIN +# include <asm/machw.h> #endif #ifdef CONFIG_EARLY_PRINTK -#define SERIAL_DEBUG -#else -#undef SERIAL_DEBUG +# define SERIAL_DEBUG +# if defined(CONFIG_MAC) && defined(CONFIG_FONT_SUPPORT) +# define CONSOLE_DEBUG +# endif #endif -#else /* !CONFIG_MAC */ - -#define SERIAL_DEBUG - -#endif /* !CONFIG_MAC */ - #undef MMU_PRINT #undef MMU_NOCACHE_KERNEL #undef DEBUG @@ -298,6 +292,7 @@ .globl kernel_pg_dir .globl availmem +.globl m68k_init_mapped_size .globl m68k_pgtable_cachemode .globl m68k_supervisor_cachemode #ifdef CONFIG_MVME16x @@ -475,22 +470,21 @@ func_define serial_putc,1 func_define console_putc,1 func_define console_init -func_define console_put_stats func_define console_put_penguin func_define console_plot_pixel,3 func_define console_scroll .macro putc ch -#if defined(CONSOLE) || defined(SERIAL_DEBUG) +#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG) pea \ch #endif -#ifdef CONSOLE +#ifdef CONSOLE_DEBUG func_call console_putc #endif #ifdef SERIAL_DEBUG func_call serial_putc #endif -#if defined(CONSOLE) || defined(SERIAL_DEBUG) +#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG) addql #4,%sp #endif .endm @@ -510,7 +504,7 @@ func_define putn,1 .endm .macro puts string -#if defined(CONSOLE) || defined(SERIAL_DEBUG) +#if defined(CONSOLE_DEBUG) || defined(SERIAL_DEBUG) __INITDATA .Lstr\@: .string "\string" @@ -646,32 +640,9 @@ ENTRY(__start) lea %pc@(L(mac_rowbytes)),%a1 movel %a0@,%a1@ -#ifdef SERIAL_DEBUG get_bi_record BI_MAC_SCCBASE lea %pc@(L(mac_sccbase)),%a1 movel %a0@,%a1@ -#endif - -#if 0 - /* - * Clear the screen - */ - lea %pc@(L(mac_videobase)),%a0 - movel %a0@,%a1 - lea %pc@(L(mac_dimensions)),%a0 - movel %a0@,%d1 - swap %d1 /* #rows is high bytes */ - andl #0xFFFF,%d1 /* rows */ - subl #10,%d1 - lea %pc@(L(mac_rowbytes)),%a0 -loopy2: - movel %a0@,%d0 - subql #1,%d0 -loopx2: - moveb #0x55, %a1@+ - dbra %d0,loopx2 - dbra %d1,loopy2 -#endif L(test_notmac): #endif /* CONFIG_MAC */ @@ -901,15 +872,14 @@ L(nothp): */ #ifdef CONFIG_MAC is_not_mac(L(nocon)) -#ifdef CONSOLE +# ifdef CONSOLE_DEBUG console_init -#ifdef CONSOLE_PENGUIN +# ifdef CONFIG_LOGO console_put_penguin -#endif /* CONSOLE_PENGUIN */ - console_put_stats -#endif /* CONSOLE */ +# endif /* CONFIG_LOGO */ +# endif /* CONSOLE_DEBUG */ L(nocon): -#endif /* CONFIG_MAC */ +#endif /* CONFIG_MAC */ putc '\n' @@ -938,10 +908,22 @@ L(nocon): * * This block of code does what's necessary to map in the various kinds * of machines for execution of Linux. - * First map the first 4 MB of kernel code & data + * First map the first 4, 8, or 16 MB of kernel code & data */ - mmu_map #PAGE_OFFSET,%pc@(L(phys_kernel_start)),#4*1024*1024,\ + get_bi_record BI_MEMCHUNK + movel %a0@(4),%d0 + movel #16*1024*1024,%d1 + cmpl %d0,%d1 + jls 1f + lsrl #1,%d1 + cmpl %d0,%d1 + jls 1f + lsrl #1,%d1 +1: + lea %pc@(m68k_init_mapped_size),%a0 + movel %d1,%a0@ + mmu_map #PAGE_OFFSET,%pc@(L(phys_kernel_start)),%d1,\ %pc@(m68k_supervisor_cachemode) putc 'C' @@ -1412,15 +1394,13 @@ L(mmu_fixup_done): andl L(mac_videobase),%d0 addl #VIDEOMEMBASE,%d0 movel %d0,L(mac_videobase) -#if defined(CONSOLE) +#ifdef CONSOLE_DEBUG movel %pc@(L(phys_kernel_start)),%d0 subl #PAGE_OFFSET,%d0 subl %d0,L(console_font) subl %d0,L(console_font_data) #endif -#ifdef SERIAL_DEBUG orl #0x50000000,L(mac_sccbase) -#endif 1: #endif @@ -1532,7 +1512,7 @@ L(cache_done): /* * Find a tag record in the bootinfo structure - * The bootinfo structure is located right after the kernel bss + * The bootinfo structure is located right after the kernel * Returns: d0: size (-1 if not found) * a0: data pointer (end-of-records if not found) */ @@ -2750,13 +2730,16 @@ func_return get_new_page */ #ifdef CONFIG_MAC +/* You may define either or both of these. */ +#define MAC_USE_SCC_A /* Modem port */ +#define MAC_USE_SCC_B /* Printer port */ +#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B) +/* Initialisation table for SCC with 3.6864 MHz PCLK */ L(scc_initable_mac): - .byte 9,12 /* Reset */ .byte 4,0x44 /* x16, 1 stopbit, no parity */ .byte 3,0xc0 /* receiver: 8 bpc */ .byte 5,0xe2 /* transmitter: 8 bpc, assert dtr/rts */ - .byte 9,0 /* no interrupts */ .byte 10,0 /* NRZ */ .byte 11,0x50 /* use baud rate generator */ .byte 12,1,13,0 /* 38400 baud */ @@ -2766,6 +2749,7 @@ L(scc_initable_mac): .byte -1 .even #endif +#endif /* CONFIG_MAC */ #ifdef CONFIG_ATARI /* #define USE_PRINTER */ @@ -2774,14 +2758,12 @@ L(scc_initable_mac): #define USE_MFP #if defined(USE_SCC_A) || defined(USE_SCC_B) -#define USE_SCC -/* Initialisation table for SCC */ -L(scc_initable): - .byte 9,12 /* Reset */ +/* Initialisation table for SCC with 7.9872 MHz PCLK */ +/* PCLK == 8.0539 gives baud == 9680.1 */ +L(scc_initable_atari): .byte 4,0x44 /* x16, 1 stopbit, no parity */ .byte 3,0xc0 /* receiver: 8 bpc */ .byte 5,0xe2 /* transmitter: 8 bpc, assert dtr/rts */ - .byte 9,0 /* no interrupts */ .byte 10,0 /* NRZ */ .byte 11,0x50 /* use baud rate generator */ .byte 12,24,13,0 /* 9600 baud */ @@ -2830,7 +2812,7 @@ LMFP_UDR = 0xfffa2f */ /* - * Initialize serial port hardware for 9600/8/1 + * Initialize serial port hardware */ func_start serial_init,%d0/%d1/%a0/%a1 /* @@ -2840,7 +2822,7 @@ func_start serial_init,%d0/%d1/%a0/%a1 * d0 = boot info offset * CONFIG_ATARI * a0 = address of SCC - * a1 = Liobase address/address of scc_initable + * a1 = Liobase address/address of scc_initable_atari * d0 = init data for serial port * CONFIG_MAC * a0 = address of SCC @@ -2861,6 +2843,7 @@ func_start serial_init,%d0/%d1/%a0/%a1 | movew #61,CUSTOMBASE+C_SERPER-ZTWOBASE 1: #endif + #ifdef CONFIG_ATARI is_not_atari(4f) movel %pc@(L(iobase)),%a1 @@ -2875,9 +2858,21 @@ func_start serial_init,%d0/%d1/%a0/%a1 moveb %a1@(LPSG_READ),%d0 bset #5,%d0 moveb %d0,%a1@(LPSG_WRITE) -#elif defined(USE_SCC) +#elif defined(USE_SCC_A) || defined(USE_SCC_B) lea %a1@(LSCC_CTRL),%a0 - lea %pc@(L(scc_initable)),%a1 + /* Reset SCC register pointer */ + moveb %a0@,%d0 + /* Reset SCC device: write register pointer then register value */ + moveb #9,%a0@ + moveb #0xc0,%a0@ + /* Wait for 5 PCLK cycles, which is about 63 CPU cycles */ + /* 5 / 7.9872 MHz = approx. 0.63 us = 63 / 100 MHz */ + movel #32,%d0 +2: + subq #1,%d0 + jne 2b + /* Initialize channel */ + lea %pc@(L(scc_initable_atari)),%a1 2: moveb %a1@+,%d0 jmi 3f moveb %d0,%a0@ @@ -2895,22 +2890,29 @@ func_start serial_init,%d0/%d1/%a0/%a1 jra L(serial_init_done) 4: #endif + #ifdef CONFIG_MAC is_not_mac(L(serial_init_not_mac)) - -#ifdef SERIAL_DEBUG -/* You may define either or both of these. */ -#define MAC_USE_SCC_A /* Modem port */ -#define MAC_USE_SCC_B /* Printer port */ - +#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B) #define mac_scc_cha_b_ctrl_offset 0x0 #define mac_scc_cha_a_ctrl_offset 0x2 #define mac_scc_cha_b_data_offset 0x4 #define mac_scc_cha_a_data_offset 0x6 - + movel %pc@(L(mac_sccbase)),%a0 + /* Reset SCC register pointer */ + moveb %a0@(mac_scc_cha_a_ctrl_offset),%d0 + /* Reset SCC device: write register pointer then register value */ + moveb #9,%a0@(mac_scc_cha_a_ctrl_offset) + moveb #0xc0,%a0@(mac_scc_cha_a_ctrl_offset) + /* Wait for 5 PCLK cycles, which is about 68 CPU cycles */ + /* 5 / 3.6864 MHz = approx. 1.36 us = 68 / 50 MHz */ + movel #35,%d0 +5: + subq #1,%d0 + jne 5b +#endif #ifdef MAC_USE_SCC_A /* Initialize channel A */ - movel %pc@(L(mac_sccbase)),%a0 lea %pc@(L(scc_initable_mac)),%a1 5: moveb %a1@+,%d0 jmi 6f @@ -2919,12 +2921,8 @@ func_start serial_init,%d0/%d1/%a0/%a1 jra 5b 6: #endif /* MAC_USE_SCC_A */ - #ifdef MAC_USE_SCC_B /* Initialize channel B */ -#ifndef MAC_USE_SCC_A /* Load mac_sccbase only if needed */ - movel %pc@(L(mac_sccbase)),%a0 -#endif /* MAC_USE_SCC_A */ lea %pc@(L(scc_initable_mac)),%a1 7: moveb %a1@+,%d0 jmi 8f @@ -2933,8 +2931,6 @@ func_start serial_init,%d0/%d1/%a0/%a1 jra 7b 8: #endif /* MAC_USE_SCC_B */ -#endif /* SERIAL_DEBUG */ - jra L(serial_init_done) L(serial_init_not_mac): #endif /* CONFIG_MAC */ @@ -2964,6 +2960,15 @@ L(serial_init_not_mac): 2: #endif +#ifdef CONFIG_MVME16x + is_not_mvme16x(L(serial_init_not_mvme16x)) + moveb #0x10,M167_PCSCCMICR + moveb #0x10,M167_PCSCCTICR + moveb #0x10,M167_PCSCCRICR + jra L(serial_init_done) +L(serial_init_not_mvme16x): +#endif + #ifdef CONFIG_APOLLO /* We count on the PROM initializing SIO1 */ #endif @@ -3003,27 +3008,19 @@ func_start serial_putc,%d0/%d1/%a0/%a1 #ifdef CONFIG_MAC is_not_mac(5f) - -#ifdef SERIAL_DEBUG - -#ifdef MAC_USE_SCC_A +#if defined(MAC_USE_SCC_A) || defined(MAC_USE_SCC_B) movel %pc@(L(mac_sccbase)),%a1 +#endif +#ifdef MAC_USE_SCC_A 3: btst #2,%a1@(mac_scc_cha_a_ctrl_offset) jeq 3b moveb %d0,%a1@(mac_scc_cha_a_data_offset) #endif /* MAC_USE_SCC_A */ - #ifdef MAC_USE_SCC_B -#ifndef MAC_USE_SCC_A /* Load mac_sccbase only if needed */ - movel %pc@(L(mac_sccbase)),%a1 -#endif /* MAC_USE_SCC_A */ 4: btst #2,%a1@(mac_scc_cha_b_ctrl_offset) jeq 4b moveb %d0,%a1@(mac_scc_cha_b_data_offset) #endif /* MAC_USE_SCC_B */ - -#endif /* SERIAL_DEBUG */ - jra L(serial_putc_done) 5: #endif /* CONFIG_MAC */ @@ -3044,7 +3041,7 @@ func_start serial_putc,%d0/%d1/%a0/%a1 nop bset #5,%d0 moveb %d0,%a1@(LPSG_WRITE) -#elif defined(USE_SCC) +#elif defined(USE_SCC_A) || defined(USE_SCC_B) 3: btst #2,%a1@(LSCC_CTRL) jeq 3b moveb %d0,%a1@(LSCC_DATA) @@ -3200,7 +3197,7 @@ func_start puts,%d0/%a0 movel ARG1,%a0 jra 2f 1: -#ifdef CONSOLE +#ifdef CONSOLE_DEBUG console_putc %d0 #endif #ifdef SERIAL_DEBUG @@ -3229,7 +3226,7 @@ func_start putn,%d0-%d2 jls 2f addb #'A'-('9'+1),%d2 2: -#ifdef CONSOLE +#ifdef CONSOLE_DEBUG console_putc %d2 #endif #ifdef SERIAL_DEBUG @@ -3239,21 +3236,19 @@ func_start putn,%d0-%d2 func_return putn -#ifdef CONFIG_MAC +#ifdef CONFIG_EARLY_PRINTK /* - * mac_early_print - * * This routine takes its parameters on the stack. It then * turns around and calls the internal routines. This routine * is used by the boot console. * * The calling parameters are: - * void mac_early_print(const char *str, unsigned length); + * void debug_cons_nputs(const char *str, unsigned length) * * This routine does NOT understand variable arguments only * simple strings! */ -ENTRY(mac_early_print) +ENTRY(debug_cons_nputs) moveml %d0/%d1/%a0,%sp@- movew %sr,%sp@- ori #0x0700,%sr @@ -3261,7 +3256,7 @@ ENTRY(mac_early_print) movel %sp@(22),%d1 /* fetch parameter */ jra 2f 1: -#ifdef CONSOLE +#ifdef CONSOLE_DEBUG console_putc %d0 #endif #ifdef SERIAL_DEBUG @@ -3275,7 +3270,7 @@ ENTRY(mac_early_print) movew %sp@+,%sr moveml %sp@+,%d0/%d1/%a0 rts -#endif /* CONFIG_MAC */ +#endif /* CONFIG_EARLY_PRINTK */ #if defined(CONFIG_HP300) || defined(CONFIG_APOLLO) func_start set_leds,%d0/%a0 @@ -3297,7 +3292,7 @@ func_start set_leds,%d0/%a0 func_return set_leds #endif -#ifdef CONSOLE +#ifdef CONSOLE_DEBUG /* * For continuity, see the data alignment * to which this structure is tied. @@ -3307,14 +3302,13 @@ func_return set_leds #define Lconsole_struct_num_columns 8 #define Lconsole_struct_num_rows 12 #define Lconsole_struct_left_edge 16 -#define Lconsole_struct_penguin_putc 20 func_start console_init,%a0-%a4/%d0-%d7 /* * Some of the register usage that follows * a0 = pointer to boot_info * a1 = pointer to screen - * a2 = pointer to Lconsole_globals + * a2 = pointer to console_globals * d3 = pixel width of screen * d4 = pixel height of screen * (d3,d4) ~= (x,y) of a point just below @@ -3402,44 +3396,7 @@ L(console_clear_loop): 1: func_return console_init -func_start console_put_stats,%a0/%d7 - /* - * Some of the register usage that follows - * a0 = pointer to boot_info - * d7 = value of boot_info fields - */ - puts "\nMacLinux\n" - -#ifdef SERIAL_DEBUG - puts "\n vidaddr:" - putn %pc@(L(mac_videobase)) /* video addr. */ - - puts "\n _stext:" - lea %pc@(_stext),%a0 - putn %a0 - - puts "\nbootinfo:" - lea %pc@(_end),%a0 - putn %a0 - - puts "\n cpuid:" - putn %pc@(L(cputype)) - -# ifdef CONFIG_MAC - puts "\n sccbase:" - putn %pc@(L(mac_sccbase)) -# endif -# ifdef MMU_PRINT - putc '\n' - jbsr mmu_print_machine_cpu_types -# endif -#endif /* SERIAL_DEBUG */ - - putc '\n' - -func_return console_put_stats - -#ifdef CONSOLE_PENGUIN +#ifdef CONFIG_LOGO func_start console_put_penguin,%a0-%a1/%d0-%d7 /* * Get 'that_penguin' onto the screen in the upper right corner @@ -3780,44 +3737,15 @@ L(white_16): L(console_plot_pixel_exit): func_return console_plot_pixel -#endif /* CONSOLE */ - -#if 0 -/* - * This is some old code lying around. I don't believe - * it's used or important anymore. My guess is it contributed - * to getting to this point, but it's done for now. - * It was still in the 2.1.77 head.S, so it's still here. - * (And still not used!) - */ -L(showtest): - moveml %a0/%d7,%sp@- - puts "A=" - putn %a1 +#endif /* CONSOLE_DEBUG */ - .long 0xf0119f15 | ptestr #5,%a1@,#7,%a0 - - puts "DA=" - putn %a0 - - puts "D=" - putn %a0@ - - puts "S=" - lea %pc@(L(mmu)),%a0 - .long 0xf0106200 | pmove %psr,%a0@ - clrl %d7 - movew %a0@,%d7 - putn %d7 - - putc '\n' - moveml %sp@+,%a0/%d7 - rts -#endif /* 0 */ __INITDATA .align 4 +m68k_init_mapped_size: + .long 0 + #if defined(CONFIG_ATARI) || defined(CONFIG_AMIGA) || \ defined(CONFIG_HP300) || defined(CONFIG_APOLLO) L(custom): @@ -3825,19 +3753,18 @@ L(iobase): .long 0 #endif -#if defined(CONSOLE) +#ifdef CONSOLE_DEBUG L(console_globals): .long 0 /* cursor column */ .long 0 /* cursor row */ .long 0 /* max num columns */ .long 0 /* max num rows */ .long 0 /* left edge */ - .long 0 /* mac putc */ L(console_font): .long 0 /* pointer to console font (struct font_desc) */ L(console_font_data): .long 0 /* pointer to console font data */ -#endif /* CONSOLE */ +#endif /* CONSOLE_DEBUG */ #if defined(MMU_PRINT) L(mmu_print_data): @@ -3877,7 +3804,9 @@ M167_CYIER = 0xfff45011 M167_CYLICR = 0xfff45026 M167_CYTEOIR = 0xfff45085 M167_CYTDR = 0xfff450f8 +M167_PCSCCMICR = 0xfff4201d M167_PCSCCTICR = 0xfff4201e +M167_PCSCCRICR = 0xfff4201f M167_PCTPIACKR = 0xfff42025 #endif @@ -3887,8 +3816,6 @@ BVME_SCC_DATA_A = 0xffb0000f #endif #if defined(CONFIG_MAC) -L(mac_booter_data): - .long 0 L(mac_videobase): .long 0 L(mac_videodepth): @@ -3897,10 +3824,8 @@ L(mac_dimensions): .long 0 L(mac_rowbytes): .long 0 -#ifdef SERIAL_DEBUG L(mac_sccbase): .long 0 -#endif #endif /* CONFIG_MAC */ #if defined (CONFIG_APOLLO) diff --git a/arch/m68k/kernel/init_task.c b/arch/m68k/kernel/init_task.c deleted file mode 100644 index c744cfc6bfa..00000000000 --- a/arch/m68k/kernel/init_task.c +++ /dev/null @@ -1,35 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/init_task.c - */ -#include <linux/mm.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/init_task.h> -#include <linux/fs.h> -#include <linux/mqueue.h> - -#include <asm/uaccess.h> -#include <asm/pgtable.h> - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ -struct task_struct init_task = INIT_TASK(init_task); - -EXPORT_SYMBOL(init_task); - -/* - * Initial thread structure. - * - * We need to make sure that this is THREAD size aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry.. - */ -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; - diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c index 74fefac0089..5b8d66fbf38 100644 --- a/arch/m68k/kernel/ints.c +++ b/arch/m68k/kernel/ints.c @@ -10,12 +10,11 @@ #include <linux/types.h> #include <linux/sched.h> #include <linux/interrupt.h> -#include <linux/kernel_stat.h> #include <linux/errno.h> #include <linux/init.h> +#include <linux/irq.h> #include <asm/setup.h> -#include <asm/system.h> #include <asm/irq.h> #include <asm/traps.h> #include <asm/page.h> @@ -59,12 +58,6 @@ void __init init_IRQ(void) { int i; - /* assembly irq entry code relies on this... */ - if (HARDIRQ_MASK != 0x00ff0000) { - extern void hardirq_mask_is_broken(void); - hardirq_mask_is_broken(); - } - for (i = IRQ_AUTO_1; i <= IRQ_AUTO_7; i++) irq_set_chip_and_handler(i, &auto_irq_chip, handle_simple_irq); @@ -102,7 +95,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt) BUG_ON(IRQ_USER + cnt > NR_IRQS); m68k_first_user_vec = vec; for (i = 0; i < cnt; i++) - irq_set_chip(IRQ_USER + i, &user_irq_chip); + irq_set_chip_and_handler(i, &user_irq_chip, handle_simple_irq); *user_irqvec_fixup = vec - IRQ_USER; flush_icache(); } diff --git a/arch/m68k/kernel/irq.c b/arch/m68k/kernel/irq.c index c73988cfa90..9ab4f550342 100644 --- a/arch/m68k/kernel/irq.c +++ b/arch/m68k/kernel/irq.c @@ -15,7 +15,6 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/seq_file.h> -#include <asm/system.h> #include <asm/traps.h> asmlinkage void do_IRQ(int irq, struct pt_regs *regs) diff --git a/arch/m68k/kernel/machine_kexec.c b/arch/m68k/kernel/machine_kexec.c new file mode 100644 index 00000000000..d4affc917d9 --- /dev/null +++ b/arch/m68k/kernel/machine_kexec.c @@ -0,0 +1,58 @@ +/* + * machine_kexec.c - handle transition of Linux booting another kernel + */ +#include <linux/compiler.h> +#include <linux/kexec.h> +#include <linux/mm.h> +#include <linux/delay.h> + +#include <asm/cacheflush.h> +#include <asm/page.h> +#include <asm/setup.h> + +extern const unsigned char relocate_new_kernel[]; +extern const size_t relocate_new_kernel_size; + +int machine_kexec_prepare(struct kimage *kimage) +{ + return 0; +} + +void machine_kexec_cleanup(struct kimage *kimage) +{ +} + +void machine_shutdown(void) +{ +} + +void machine_crash_shutdown(struct pt_regs *regs) +{ +} + +typedef void (*relocate_kernel_t)(unsigned long ptr, + unsigned long start, + unsigned long cpu_mmu_flags) __noreturn; + +void machine_kexec(struct kimage *image) +{ + void *reboot_code_buffer; + unsigned long cpu_mmu_flags; + + reboot_code_buffer = page_address(image->control_code_page); + + memcpy(reboot_code_buffer, relocate_new_kernel, + relocate_new_kernel_size); + + /* + * we do not want to be bothered. + */ + local_irq_disable(); + + pr_info("Will call new kernel at 0x%08lx. Bye...\n", image->start); + __flush_cache_all(); + cpu_mmu_flags = m68k_cputype | m68k_mmutype << 8; + ((relocate_kernel_t) reboot_code_buffer)(image->head & PAGE_MASK, + image->start, + cpu_mmu_flags); +} diff --git a/arch/m68k/kernel/module.c b/arch/m68k/kernel/module.c index 34849c4c6e3..eb46fd6038c 100644 --- a/arch/m68k/kernel/module.c +++ b/arch/m68k/kernel/module.c @@ -47,7 +47,7 @@ int apply_relocate(Elf32_Shdr *sechdrs, *location += sym->st_value; break; case R_68K_PC32: - /* Add the value, subtract its postition */ + /* Add the value, subtract its position */ *location += sym->st_value - (uint32_t)location; break; default: @@ -87,7 +87,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs, *location = rel[i].r_addend + sym->st_value; break; case R_68K_PC32: - /* Add the value, subtract its postition */ + /* Add the value, subtract its position */ *location = rel[i].r_addend + sym->st_value - (uint32_t)location; break; default: diff --git a/arch/m68k/kernel/pcibios.c b/arch/m68k/kernel/pcibios.c new file mode 100644 index 00000000000..931a31ff59d --- /dev/null +++ b/arch/m68k/kernel/pcibios.c @@ -0,0 +1,104 @@ +/* + * pci.c -- basic PCI support code + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + * (C) Copyright 2011, Greg Ungerer <gerg@uclinux.org> + */ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/mm.h> +#include <linux/init.h> +#include <linux/pci.h> + +/* + * From arch/i386/kernel/pci-i386.c: + * + * We need to avoid collisions with `mirrored' VGA ports + * and other strange ISA hardware, so we always want the + * addresses to be allocated in the 0x000-0x0ff region + * modulo 0x400. + * + * Why? Because some silly external IO cards only decode + * the low 10 bits of the IO address. The 0x00-0xff region + * is reserved for motherboard devices that decode all 16 + * bits, so it's ok to allocate at, say, 0x2800-0x28ff, + * but we want to try to avoid allocating at 0x2900-0x2bff + * which might be mirrored at 0x0100-0x03ff.. + */ +resource_size_t pcibios_align_resource(void *data, const struct resource *res, + resource_size_t size, resource_size_t align) +{ + resource_size_t start = res->start; + + if ((res->flags & IORESOURCE_IO) && (start & 0x300)) + start = (start + 0x3ff) & ~0x3ff; + + start = (start + align - 1) & ~(align - 1); + + return start; +} + +/* + * This is taken from the ARM code for this. + */ +int pcibios_enable_device(struct pci_dev *dev, int mask) +{ + struct resource *r; + u16 cmd, newcmd; + int idx; + + pci_read_config_word(dev, PCI_COMMAND, &cmd); + newcmd = cmd; + + for (idx = 0; idx < 6; idx++) { + /* Only set up the requested stuff */ + if (!(mask & (1 << idx))) + continue; + + r = dev->resource + idx; + if (!r->start && r->end) { + pr_err(KERN_ERR "PCI: Device %s not available because of resource collisions\n", + pci_name(dev)); + return -EINVAL; + } + if (r->flags & IORESOURCE_IO) + newcmd |= PCI_COMMAND_IO; + if (r->flags & IORESOURCE_MEM) + newcmd |= PCI_COMMAND_MEMORY; + } + + /* + * Bridges (eg, cardbus bridges) need to be fully enabled + */ + if ((dev->class >> 16) == PCI_BASE_CLASS_BRIDGE) + newcmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY; + + + if (newcmd != cmd) { + pr_info("PCI: enabling device %s (0x%04x -> 0x%04x)\n", + pci_name(dev), cmd, newcmd); + pci_write_config_word(dev, PCI_COMMAND, newcmd); + } + return 0; +} + +void pcibios_fixup_bus(struct pci_bus *bus) +{ + struct pci_dev *dev; + + list_for_each_entry(dev, &bus->devices, bus_list) { + pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 8); + pci_write_config_byte(dev, PCI_LATENCY_TIMER, 32); + } +} + +char *pcibios_setup(char *str) +{ + return str; +} + diff --git a/arch/m68k/kernel/process.c b/arch/m68k/kernel/process.c index 6cf4bd6e34f..c55ff719fa7 100644 --- a/arch/m68k/kernel/process.c +++ b/arch/m68k/kernel/process.c @@ -1,5 +1,277 @@ -#ifdef CONFIG_MMU -#include "process_mm.c" +/* + * linux/arch/m68k/kernel/process.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * 68060 fixes by Jesper Skov + */ + +/* + * This file handles the architecture-dependent parts of process handling.. + */ + +#include <linux/errno.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/mm.h> +#include <linux/slab.h> +#include <linux/fs.h> +#include <linux/smp.h> +#include <linux/stddef.h> +#include <linux/unistd.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/reboot.h> +#include <linux/init_task.h> +#include <linux/mqueue.h> +#include <linux/rcupdate.h> + +#include <asm/uaccess.h> +#include <asm/traps.h> +#include <asm/machdep.h> +#include <asm/setup.h> +#include <asm/pgtable.h> + + +asmlinkage void ret_from_fork(void); +asmlinkage void ret_from_kernel_thread(void); + + +/* + * Return saved PC from a blocked thread + */ +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; + /* Check whether the thread is blocked in resume() */ + if (in_sched_functions(sw->retpc)) + return ((unsigned long *)sw->a6)[1]; + else + return sw->retpc; +} + +void arch_cpu_idle(void) +{ +#if defined(MACH_ATARI_ONLY) + /* block out HSYNC on the atari (falcon) */ + __asm__("stop #0x2200" : : : "cc"); #else -#include "process_no.c" + __asm__("stop #0x2000" : : : "cc"); #endif +} + +void machine_restart(char * __unused) +{ + if (mach_reset) + mach_reset(); + for (;;); +} + +void machine_halt(void) +{ + if (mach_halt) + mach_halt(); + for (;;); +} + +void machine_power_off(void) +{ + if (mach_power_off) + mach_power_off(); + for (;;); +} + +void (*pm_power_off)(void) = machine_power_off; +EXPORT_SYMBOL(pm_power_off); + +void show_regs(struct pt_regs * regs) +{ + printk("\n"); + printk("Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", + regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); + printk("ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", + regs->orig_d0, regs->d0, regs->a2, regs->a1); + printk("A0: %08lx D5: %08lx D4: %08lx\n", + regs->a0, regs->d5, regs->d4); + printk("D3: %08lx D2: %08lx D1: %08lx\n", + regs->d3, regs->d2, regs->d1); + if (!(regs->sr & PS_S)) + printk("USP: %08lx\n", rdusp()); +} + +void flush_thread(void) +{ + current->thread.fs = __USER_DS; +#ifdef CONFIG_FPU + if (!FPU_IS_EMU) { + unsigned long zero = 0; + asm volatile("frestore %0": :"m" (zero)); + } +#endif +} + +/* + * Why not generic sys_clone, you ask? m68k passes all arguments on stack. + * And we need all registers saved, which means a bunch of stuff pushed + * on top of pt_regs, which means that sys_clone() arguments would be + * buried. We could, of course, copy them, but it's too costly for no + * good reason - generic clone() would have to copy them *again* for + * do_fork() anyway. So in this case it's actually better to pass pt_regs * + * and extract arguments for do_fork() from there. Eventually we might + * go for calling do_fork() directly from the wrapper, but only after we + * are finished with do_fork() prototype conversion. + */ +asmlinkage int m68k_clone(struct pt_regs *regs) +{ + /* regs will be equal to current_pt_regs() */ + return do_fork(regs->d1, regs->d2, 0, + (int __user *)regs->d3, (int __user *)regs->d4); +} + +int copy_thread(unsigned long clone_flags, unsigned long usp, + unsigned long arg, struct task_struct *p) +{ + struct fork_frame { + struct switch_stack sw; + struct pt_regs regs; + } *frame; + + frame = (struct fork_frame *) (task_stack_page(p) + THREAD_SIZE) - 1; + + p->thread.ksp = (unsigned long)frame; + p->thread.esp0 = (unsigned long)&frame->regs; + + /* + * Must save the current SFC/DFC value, NOT the value when + * the parent was last descheduled - RGH 10-08-96 + */ + p->thread.fs = get_fs().seg; + + if (unlikely(p->flags & PF_KTHREAD)) { + /* kernel thread */ + memset(frame, 0, sizeof(struct fork_frame)); + frame->regs.sr = PS_S; + frame->sw.a3 = usp; /* function */ + frame->sw.d7 = arg; + frame->sw.retpc = (unsigned long)ret_from_kernel_thread; + p->thread.usp = 0; + return 0; + } + memcpy(frame, container_of(current_pt_regs(), struct fork_frame, regs), + sizeof(struct fork_frame)); + frame->regs.d0 = 0; + frame->sw.retpc = (unsigned long)ret_from_fork; + p->thread.usp = usp ?: rdusp(); + + if (clone_flags & CLONE_SETTLS) + task_thread_info(p)->tp_value = frame->regs.d5; + +#ifdef CONFIG_FPU + if (!FPU_IS_EMU) { + /* Copy the current fpu state */ + asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); + + if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) { + if (CPU_IS_COLDFIRE) { + asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t" + "fmovel %/fpiar,%1\n\t" + "fmovel %/fpcr,%2\n\t" + "fmovel %/fpsr,%3" + : + : "m" (p->thread.fp[0]), + "m" (p->thread.fpcntl[0]), + "m" (p->thread.fpcntl[1]), + "m" (p->thread.fpcntl[2]) + : "memory"); + } else { + asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" + "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" + : + : "m" (p->thread.fp[0]), + "m" (p->thread.fpcntl[0]) + : "memory"); + } + } + + /* Restore the state in case the fpu was busy */ + asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); + } +#endif /* CONFIG_FPU */ + + return 0; +} + +/* Fill in the fpu structure for a core dump. */ +#ifdef CONFIG_FPU +int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) +{ + char fpustate[216]; + + if (FPU_IS_EMU) { + int i; + + memcpy(fpu->fpcntl, current->thread.fpcntl, 12); + memcpy(fpu->fpregs, current->thread.fp, 96); + /* Convert internal fpu reg representation + * into long double format + */ + for (i = 0; i < 24; i += 3) + fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | + ((fpu->fpregs[i] & 0x0000ffff) << 16); + return 1; + } + + /* First dump the fpu context to avoid protocol violation. */ + asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); + if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) + return 0; + + if (CPU_IS_COLDFIRE) { + asm volatile ("fmovel %/fpiar,%0\n\t" + "fmovel %/fpcr,%1\n\t" + "fmovel %/fpsr,%2\n\t" + "fmovemd %/fp0-%/fp7,%3" + : + : "m" (fpu->fpcntl[0]), + "m" (fpu->fpcntl[1]), + "m" (fpu->fpcntl[2]), + "m" (fpu->fpregs[0]) + : "memory"); + } else { + asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" + : + : "m" (fpu->fpcntl[0]) + : "memory"); + asm volatile ("fmovemx %/fp0-%/fp7,%0" + : + : "m" (fpu->fpregs[0]) + : "memory"); + } + + return 1; +} +EXPORT_SYMBOL(dump_fpu); +#endif /* CONFIG_FPU */ + +unsigned long get_wchan(struct task_struct *p) +{ + unsigned long fp, pc; + unsigned long stack_page; + int count = 0; + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + + stack_page = (unsigned long)task_stack_page(p); + fp = ((struct switch_stack *)p->thread.ksp)->a6; + do { + if (fp < stack_page+sizeof(struct thread_info) || + fp >= 8184+stack_page) + return 0; + pc = ((unsigned long *)fp)[1]; + if (!in_sched_functions(pc)) + return pc; + fp = *(unsigned long *) fp; + } while (count++ < 16); + return 0; +} diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c deleted file mode 100644 index 099283ee1a8..00000000000 --- a/arch/m68k/kernel/process_mm.c +++ /dev/null @@ -1,369 +0,0 @@ -/* - * linux/arch/m68k/kernel/process.c - * - * Copyright (C) 1995 Hamish Macdonald - * - * 68060 fixes by Jesper Skov - */ - -/* - * This file handles the architecture-dependent parts of process handling.. - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/smp.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/reboot.h> -#include <linux/init_task.h> -#include <linux/mqueue.h> - -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/traps.h> -#include <asm/machdep.h> -#include <asm/setup.h> -#include <asm/pgtable.h> - - -asmlinkage void ret_from_fork(void); - - -/* - * Return saved PC from a blocked thread - */ -unsigned long thread_saved_pc(struct task_struct *tsk) -{ - struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; - /* Check whether the thread is blocked in resume() */ - if (in_sched_functions(sw->retpc)) - return ((unsigned long *)sw->a6)[1]; - else - return sw->retpc; -} - -/* - * The idle loop on an m68k.. - */ -static void default_idle(void) -{ - if (!need_resched()) -#if defined(MACH_ATARI_ONLY) - /* block out HSYNC on the atari (falcon) */ - __asm__("stop #0x2200" : : : "cc"); -#else - __asm__("stop #0x2000" : : : "cc"); -#endif -} - -void (*idle)(void) = default_idle; - -/* - * The idle thread. There's no useful work to be - * done, so just try to conserve power and have a - * low exit latency (ie sit in a loop waiting for - * somebody to say that they'd like to reschedule) - */ -void cpu_idle(void) -{ - /* endless idle loop with no priority at all */ - while (1) { - while (!need_resched()) - idle(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } -} - -void machine_restart(char * __unused) -{ - if (mach_reset) - mach_reset(); - for (;;); -} - -void machine_halt(void) -{ - if (mach_halt) - mach_halt(); - for (;;); -} - -void machine_power_off(void) -{ - if (mach_power_off) - mach_power_off(); - for (;;); -} - -void (*pm_power_off)(void) = machine_power_off; -EXPORT_SYMBOL(pm_power_off); - -void show_regs(struct pt_regs * regs) -{ - printk("\n"); - printk("Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", - regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); - printk("ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", - regs->orig_d0, regs->d0, regs->a2, regs->a1); - printk("A0: %08lx D5: %08lx D4: %08lx\n", - regs->a0, regs->d5, regs->d4); - printk("D3: %08lx D2: %08lx D1: %08lx\n", - regs->d3, regs->d2, regs->d1); - if (!(regs->sr & PS_S)) - printk("USP: %08lx\n", rdusp()); -} - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - int pid; - mm_segment_t fs; - - fs = get_fs(); - set_fs (KERNEL_DS); - - { - register long retval __asm__ ("d0"); - register long clone_arg __asm__ ("d1") = flags | CLONE_VM | CLONE_UNTRACED; - - retval = __NR_clone; - __asm__ __volatile__ - ("clrl %%d2\n\t" - "trap #0\n\t" /* Linux/m68k system call */ - "tstl %0\n\t" /* child or parent */ - "jne 1f\n\t" /* parent - jump */ - "lea %%sp@(%c7),%6\n\t" /* reload current */ - "movel %6@,%6\n\t" - "movel %3,%%sp@-\n\t" /* push argument */ - "jsr %4@\n\t" /* call fn */ - "movel %0,%%d1\n\t" /* pass exit value */ - "movel %2,%%d0\n\t" /* exit */ - "trap #0\n" - "1:" - : "+d" (retval) - : "i" (__NR_clone), "i" (__NR_exit), - "r" (arg), "a" (fn), "d" (clone_arg), "r" (current), - "i" (-THREAD_SIZE) - : "d2"); - - pid = retval; - } - - set_fs (fs); - return pid; -} -EXPORT_SYMBOL(kernel_thread); - -void flush_thread(void) -{ - unsigned long zero = 0; - - current->thread.fs = __USER_DS; - if (!FPU_IS_EMU) - asm volatile("frestore %0": :"m" (zero)); -} - -/* - * "m68k_fork()".. By the time we get here, the - * non-volatile registers have also been saved on the - * stack. We do some ugly pointer stuff here.. (see - * also copy_thread) - */ - -asmlinkage int m68k_fork(struct pt_regs *regs) -{ - return do_fork(SIGCHLD, rdusp(), regs, 0, NULL, NULL); -} - -asmlinkage int m68k_vfork(struct pt_regs *regs) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, - NULL, NULL); -} - -asmlinkage int m68k_clone(struct pt_regs *regs) -{ - unsigned long clone_flags; - unsigned long newsp; - int __user *parent_tidptr, *child_tidptr; - - /* syscall2 puts clone_flags in d1 and usp in d2 */ - clone_flags = regs->d1; - newsp = regs->d2; - parent_tidptr = (int __user *)regs->d3; - child_tidptr = (int __user *)regs->d4; - if (!newsp) - newsp = rdusp(); - return do_fork(clone_flags, newsp, regs, 0, - parent_tidptr, child_tidptr); -} - -int copy_thread(unsigned long clone_flags, unsigned long usp, - unsigned long unused, - struct task_struct * p, struct pt_regs * regs) -{ - struct pt_regs * childregs; - struct switch_stack * childstack, *stack; - unsigned long *retp; - - childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; - - *childregs = *regs; - childregs->d0 = 0; - - retp = ((unsigned long *) regs); - stack = ((struct switch_stack *) retp) - 1; - - childstack = ((struct switch_stack *) childregs) - 1; - *childstack = *stack; - childstack->retpc = (unsigned long)ret_from_fork; - - p->thread.usp = usp; - p->thread.ksp = (unsigned long)childstack; - - if (clone_flags & CLONE_SETTLS) - task_thread_info(p)->tp_value = regs->d5; - - /* - * Must save the current SFC/DFC value, NOT the value when - * the parent was last descheduled - RGH 10-08-96 - */ - p->thread.fs = get_fs().seg; - - if (!FPU_IS_EMU) { - /* Copy the current fpu state */ - asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); - - if (!CPU_IS_060 ? p->thread.fpstate[0] : p->thread.fpstate[2]) { - if (CPU_IS_COLDFIRE) { - asm volatile ("fmovemd %/fp0-%/fp7,%0\n\t" - "fmovel %/fpiar,%1\n\t" - "fmovel %/fpcr,%2\n\t" - "fmovel %/fpsr,%3" - : - : "m" (p->thread.fp[0]), - "m" (p->thread.fpcntl[0]), - "m" (p->thread.fpcntl[1]), - "m" (p->thread.fpcntl[2]) - : "memory"); - } else { - asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" - "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" - : - : "m" (p->thread.fp[0]), - "m" (p->thread.fpcntl[0]) - : "memory"); - } - } - - /* Restore the state in case the fpu was busy */ - asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); - } - - return 0; -} - -/* Fill in the fpu structure for a core dump. */ - -int dump_fpu (struct pt_regs *regs, struct user_m68kfp_struct *fpu) -{ - char fpustate[216]; - - if (FPU_IS_EMU) { - int i; - - memcpy(fpu->fpcntl, current->thread.fpcntl, 12); - memcpy(fpu->fpregs, current->thread.fp, 96); - /* Convert internal fpu reg representation - * into long double format - */ - for (i = 0; i < 24; i += 3) - fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | - ((fpu->fpregs[i] & 0x0000ffff) << 16); - return 1; - } - - /* First dump the fpu context to avoid protocol violation. */ - asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); - if (!CPU_IS_060 ? !fpustate[0] : !fpustate[2]) - return 0; - - if (CPU_IS_COLDFIRE) { - asm volatile ("fmovel %/fpiar,%0\n\t" - "fmovel %/fpcr,%1\n\t" - "fmovel %/fpsr,%2\n\t" - "fmovemd %/fp0-%/fp7,%3" - : - : "m" (fpu->fpcntl[0]), - "m" (fpu->fpcntl[1]), - "m" (fpu->fpcntl[2]), - "m" (fpu->fpregs[0]) - : "memory"); - } else { - asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" - : - : "m" (fpu->fpcntl[0]) - : "memory"); - asm volatile ("fmovemx %/fp0-%/fp7,%0" - : - : "m" (fpu->fpregs[0]) - : "memory"); - } - - return 1; -} -EXPORT_SYMBOL(dump_fpu); - -/* - * sys_execve() executes a new program. - */ -asmlinkage int sys_execve(const char __user *name, - const char __user *const __user *argv, - const char __user *const __user *envp) -{ - int error; - char * filename; - struct pt_regs *regs = (struct pt_regs *) &name; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = do_execve(filename, argv, envp, regs); - putname(filename); - return error; -} - -unsigned long get_wchan(struct task_struct *p) -{ - unsigned long fp, pc; - unsigned long stack_page; - int count = 0; - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - - stack_page = (unsigned long)task_stack_page(p); - fp = ((struct switch_stack *)p->thread.ksp)->a6; - do { - if (fp < stack_page+sizeof(struct thread_info) || - fp >= 8184+stack_page) - return 0; - pc = ((unsigned long *)fp)[1]; - if (!in_sched_functions(pc)) - return pc; - fp = *(unsigned long *) fp; - } while (count++ < 16); - return 0; -} diff --git a/arch/m68k/kernel/process_no.c b/arch/m68k/kernel/process_no.c deleted file mode 100644 index 5e1078cabe0..00000000000 --- a/arch/m68k/kernel/process_no.c +++ /dev/null @@ -1,406 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/process.c - * - * Copyright (C) 1995 Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - * uClinux changes - * Copyright (C) 2000-2002, David McCullough <davidm@snapgear.com> - */ - -/* - * This file handles the architecture-dependent parts of process handling.. - */ - -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/stddef.h> -#include <linux/unistd.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/interrupt.h> -#include <linux/reboot.h> -#include <linux/fs.h> -#include <linux/slab.h> - -#include <asm/uaccess.h> -#include <asm/system.h> -#include <asm/traps.h> -#include <asm/machdep.h> -#include <asm/setup.h> -#include <asm/pgtable.h> - -asmlinkage void ret_from_fork(void); - -/* - * The following aren't currently used. - */ -void (*pm_idle)(void); -EXPORT_SYMBOL(pm_idle); - -void (*pm_power_off)(void); -EXPORT_SYMBOL(pm_power_off); - -/* - * The idle loop on an m68knommu.. - */ -static void default_idle(void) -{ - local_irq_disable(); - while (!need_resched()) { - /* This stop will re-enable interrupts */ - __asm__("stop #0x2000" : : : "cc"); - local_irq_disable(); - } - local_irq_enable(); -} - -void (*idle)(void) = default_idle; - -/* - * The idle thread. There's no useful work to be - * done, so just try to conserve power and have a - * low exit latency (ie sit in a loop waiting for - * somebody to say that they'd like to reschedule) - */ -void cpu_idle(void) -{ - /* endless idle loop with no priority at all */ - while (1) { - idle(); - preempt_enable_no_resched(); - schedule(); - preempt_disable(); - } -} - -void machine_restart(char * __unused) -{ - if (mach_reset) - mach_reset(); - for (;;); -} - -void machine_halt(void) -{ - if (mach_halt) - mach_halt(); - for (;;); -} - -void machine_power_off(void) -{ - if (mach_power_off) - mach_power_off(); - for (;;); -} - -void show_regs(struct pt_regs * regs) -{ - printk(KERN_NOTICE "\n"); - printk(KERN_NOTICE "Format %02x Vector: %04x PC: %08lx Status: %04x %s\n", - regs->format, regs->vector, regs->pc, regs->sr, print_tainted()); - printk(KERN_NOTICE "ORIG_D0: %08lx D0: %08lx A2: %08lx A1: %08lx\n", - regs->orig_d0, regs->d0, regs->a2, regs->a1); - printk(KERN_NOTICE "A0: %08lx D5: %08lx D4: %08lx\n", - regs->a0, regs->d5, regs->d4); - printk(KERN_NOTICE "D3: %08lx D2: %08lx D1: %08lx\n", - regs->d3, regs->d2, regs->d1); - if (!(regs->sr & PS_S)) - printk(KERN_NOTICE "USP: %08lx\n", rdusp()); -} - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) -{ - int retval; - long clone_arg = flags | CLONE_VM; - mm_segment_t fs; - - fs = get_fs(); - set_fs(KERNEL_DS); - - __asm__ __volatile__ ( - "movel %%sp, %%d2\n\t" - "movel %5, %%d1\n\t" - "movel %1, %%d0\n\t" - "trap #0\n\t" - "cmpl %%sp, %%d2\n\t" - "jeq 1f\n\t" - "movel %3, %%sp@-\n\t" - "jsr %4@\n\t" - "movel %2, %%d0\n\t" - "trap #0\n" - "1:\n\t" - "movel %%d0, %0\n" - : "=d" (retval) - : "i" (__NR_clone), - "i" (__NR_exit), - "a" (arg), - "a" (fn), - "a" (clone_arg) - : "cc", "%d0", "%d1", "%d2"); - - set_fs(fs); - return retval; -} -EXPORT_SYMBOL(kernel_thread); - -void flush_thread(void) -{ -#ifdef CONFIG_FPU - unsigned long zero = 0; -#endif - - current->thread.fs = __USER_DS; -#ifdef CONFIG_FPU - if (!FPU_IS_EMU) - asm volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" : : "m" (zero)); -#endif -} - -/* - * "m68k_fork()".. By the time we get here, the - * non-volatile registers have also been saved on the - * stack. We do some ugly pointer stuff here.. (see - * also copy_thread) - */ - -asmlinkage int m68k_fork(struct pt_regs *regs) -{ - /* fork almost works, enough to trick you into looking elsewhere :-( */ - return(-EINVAL); -} - -asmlinkage int m68k_vfork(struct pt_regs *regs) -{ - return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL); -} - -asmlinkage int m68k_clone(struct pt_regs *regs) -{ - unsigned long clone_flags; - unsigned long newsp; - - /* syscall2 puts clone_flags in d1 and usp in d2 */ - clone_flags = regs->d1; - newsp = regs->d2; - if (!newsp) - newsp = rdusp(); - return do_fork(clone_flags, newsp, regs, 0, NULL, NULL); -} - -int copy_thread(unsigned long clone_flags, - unsigned long usp, unsigned long topstk, - struct task_struct * p, struct pt_regs * regs) -{ - struct pt_regs * childregs; - struct switch_stack * childstack, *stack; - unsigned long *retp; - - childregs = (struct pt_regs *) (task_stack_page(p) + THREAD_SIZE) - 1; - - *childregs = *regs; - childregs->d0 = 0; - - retp = ((unsigned long *) regs); - stack = ((struct switch_stack *) retp) - 1; - - childstack = ((struct switch_stack *) childregs) - 1; - *childstack = *stack; - childstack->retpc = (unsigned long)ret_from_fork; - - p->thread.usp = usp; - p->thread.ksp = (unsigned long)childstack; - - if (clone_flags & CLONE_SETTLS) - task_thread_info(p)->tp_value = regs->d5; - - /* - * Must save the current SFC/DFC value, NOT the value when - * the parent was last descheduled - RGH 10-08-96 - */ - p->thread.fs = get_fs().seg; - -#ifdef CONFIG_FPU - if (!FPU_IS_EMU) { - /* Copy the current fpu state */ - asm volatile ("fsave %0" : : "m" (p->thread.fpstate[0]) : "memory"); - - if (p->thread.fpstate[0]) - asm volatile ("fmovemx %/fp0-%/fp7,%0\n\t" - "fmoveml %/fpiar/%/fpcr/%/fpsr,%1" - : : "m" (p->thread.fp[0]), "m" (p->thread.fpcntl[0]) - : "memory"); - /* Restore the state in case the fpu was busy */ - asm volatile ("frestore %0" : : "m" (p->thread.fpstate[0])); - } -#endif - - return 0; -} - -/* Fill in the fpu structure for a core dump. */ - -int dump_fpu(struct pt_regs *regs, struct user_m68kfp_struct *fpu) -{ -#ifdef CONFIG_FPU - char fpustate[216]; - - if (FPU_IS_EMU) { - int i; - - memcpy(fpu->fpcntl, current->thread.fpcntl, 12); - memcpy(fpu->fpregs, current->thread.fp, 96); - /* Convert internal fpu reg representation - * into long double format - */ - for (i = 0; i < 24; i += 3) - fpu->fpregs[i] = ((fpu->fpregs[i] & 0xffff0000) << 15) | - ((fpu->fpregs[i] & 0x0000ffff) << 16); - return 1; - } - - /* First dump the fpu context to avoid protocol violation. */ - asm volatile ("fsave %0" :: "m" (fpustate[0]) : "memory"); - if (!fpustate[0]) - return 0; - - asm volatile ("fmovem %/fpiar/%/fpcr/%/fpsr,%0" - :: "m" (fpu->fpcntl[0]) - : "memory"); - asm volatile ("fmovemx %/fp0-%/fp7,%0" - :: "m" (fpu->fpregs[0]) - : "memory"); -#endif - return 1; -} -EXPORT_SYMBOL(dump_fpu); - -/* - * Generic dumping code. Used for panic and debug. - */ -void dump(struct pt_regs *fp) -{ - unsigned long *sp; - unsigned char *tp; - int i; - - printk(KERN_EMERG "\nCURRENT PROCESS:\n\n"); - printk(KERN_EMERG "COMM=%s PID=%d\n", current->comm, current->pid); - - if (current->mm) { - printk(KERN_EMERG "TEXT=%08x-%08x DATA=%08x-%08x BSS=%08x-%08x\n", - (int) current->mm->start_code, - (int) current->mm->end_code, - (int) current->mm->start_data, - (int) current->mm->end_data, - (int) current->mm->end_data, - (int) current->mm->brk); - printk(KERN_EMERG "USER-STACK=%08x KERNEL-STACK=%08x\n\n", - (int) current->mm->start_stack, - (int)(((unsigned long) current) + THREAD_SIZE)); - } - - printk(KERN_EMERG "PC: %08lx\n", fp->pc); - printk(KERN_EMERG "SR: %08lx SP: %08lx\n", (long) fp->sr, (long) fp); - printk(KERN_EMERG "d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", - fp->d0, fp->d1, fp->d2, fp->d3); - printk(KERN_EMERG "d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", - fp->d4, fp->d5, fp->a0, fp->a1); - printk(KERN_EMERG "\nUSP: %08x TRAPFRAME: %p\n", - (unsigned int) rdusp(), fp); - - printk(KERN_EMERG "\nCODE:"); - tp = ((unsigned char *) fp->pc) - 0x20; - for (sp = (unsigned long *) tp, i = 0; (i < 0x40); i += 4) { - if ((i % 0x10) == 0) - printk(KERN_EMERG "%p: ", tp + i); - printk("%08x ", (int) *sp++); - } - printk(KERN_EMERG "\n"); - - printk(KERN_EMERG "KERNEL STACK:"); - tp = ((unsigned char *) fp) - 0x40; - for (sp = (unsigned long *) tp, i = 0; (i < 0xc0); i += 4) { - if ((i % 0x10) == 0) - printk(KERN_EMERG "%p: ", tp + i); - printk("%08x ", (int) *sp++); - } - printk(KERN_EMERG "\n"); - - printk(KERN_EMERG "USER STACK:"); - tp = (unsigned char *) (rdusp() - 0x10); - for (sp = (unsigned long *) tp, i = 0; (i < 0x80); i += 4) { - if ((i % 0x10) == 0) - printk(KERN_EMERG "%p: ", tp + i); - printk("%08x ", (int) *sp++); - } - printk(KERN_EMERG "\n"); -} - -/* - * sys_execve() executes a new program. - */ -asmlinkage int sys_execve(const char *name, - const char *const *argv, - const char *const *envp) -{ - int error; - char * filename; - struct pt_regs *regs = (struct pt_regs *) &name; - - filename = getname(name); - error = PTR_ERR(filename); - if (IS_ERR(filename)) - return error; - error = do_execve(filename, argv, envp, regs); - putname(filename); - return error; -} - -unsigned long get_wchan(struct task_struct *p) -{ - unsigned long fp, pc; - unsigned long stack_page; - int count = 0; - if (!p || p == current || p->state == TASK_RUNNING) - return 0; - - stack_page = (unsigned long)p; - fp = ((struct switch_stack *)p->thread.ksp)->a6; - do { - if (fp < stack_page+sizeof(struct thread_info) || - fp >= THREAD_SIZE-8+stack_page) - return 0; - pc = ((unsigned long *)fp)[1]; - if (!in_sched_functions(pc)) - return pc; - fp = *(unsigned long *) fp; - } while (count++ < 16); - return 0; -} - -/* - * Return saved PC of a blocked thread. - */ -unsigned long thread_saved_pc(struct task_struct *tsk) -{ - struct switch_stack *sw = (struct switch_stack *)tsk->thread.ksp; - - /* Check whether the thread is blocked in resume() */ - if (in_sched_functions(sw->retpc)) - return ((unsigned long *)sw->a6)[1]; - else - return sw->retpc; -} - diff --git a/arch/m68k/kernel/ptrace.c b/arch/m68k/kernel/ptrace.c index 07a417550e9..1bc10e62b9a 100644 --- a/arch/m68k/kernel/ptrace.c +++ b/arch/m68k/kernel/ptrace.c @@ -1,5 +1,304 @@ +/* + * linux/arch/m68k/kernel/ptrace.c + * + * Copyright (C) 1994 by Hamish Macdonald + * Taken from linux/kernel/ptrace.c and modified for M680x0. + * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/smp.h> +#include <linux/errno.h> +#include <linux/ptrace.h> +#include <linux/user.h> +#include <linux/signal.h> +#include <linux/tracehook.h> + +#include <asm/uaccess.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/processor.h> + +/* + * does not yet catch signals sent when the child dies. + * in exit.c or in signal.c. + */ + +/* determines which bits in the SR the user has access to. */ +/* 1 = access 0 = no access */ +#define SR_MASK 0x001f + +/* sets the trace bits. */ +#define TRACE_BITS 0xC000 +#define T1_BIT 0x8000 +#define T0_BIT 0x4000 + +/* Find the stack offset for a register, relative to thread.esp0. */ +#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) +#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ + - sizeof(struct switch_stack)) +/* Mapping from PT_xxx to the stack offset at which the register is + saved. Notice that usp has no stack-slot and needs to be treated + specially (see get_reg/put_reg below). */ +static const int regoff[] = { + [0] = PT_REG(d1), + [1] = PT_REG(d2), + [2] = PT_REG(d3), + [3] = PT_REG(d4), + [4] = PT_REG(d5), + [5] = SW_REG(d6), + [6] = SW_REG(d7), + [7] = PT_REG(a0), + [8] = PT_REG(a1), + [9] = PT_REG(a2), + [10] = SW_REG(a3), + [11] = SW_REG(a4), + [12] = SW_REG(a5), + [13] = SW_REG(a6), + [14] = PT_REG(d0), + [15] = -1, + [16] = PT_REG(orig_d0), + [17] = PT_REG(sr), + [18] = PT_REG(pc), +}; + +/* + * Get contents of register REGNO in task TASK. + */ +static inline long get_reg(struct task_struct *task, int regno) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); + else + return 0; + /* Need to take stkadj into account. */ + if (regno == PT_SR || regno == PT_PC) { + long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); + addr = (unsigned long *) ((unsigned long)addr + stkadj); + /* The sr is actually a 16 bit register. */ + if (regno == PT_SR) + return *(unsigned short *)addr; + } + return *addr; +} + +/* + * Write contents of register REGNO in task TASK. + */ +static inline int put_reg(struct task_struct *task, int regno, + unsigned long data) +{ + unsigned long *addr; + + if (regno == PT_USP) + addr = &task->thread.usp; + else if (regno < ARRAY_SIZE(regoff)) + addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); + else + return -1; + /* Need to take stkadj into account. */ + if (regno == PT_SR || regno == PT_PC) { + long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); + addr = (unsigned long *) ((unsigned long)addr + stkadj); + /* The sr is actually a 16 bit register. */ + if (regno == PT_SR) { + *(unsigned short *)addr = data; + return 0; + } + } + *addr = data; + return 0; +} + +/* + * Make sure the single step bit is not set. + */ +static inline void singlestep_disable(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp); + clear_tsk_thread_flag(child, TIF_DELAYED_TRACE); +} + +/* + * Called by kernel/ptrace.c when detaching.. + */ +void ptrace_disable(struct task_struct *child) +{ + singlestep_disable(child); +} + +void user_enable_single_step(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp | T1_BIT); + set_tsk_thread_flag(child, TIF_DELAYED_TRACE); +} + #ifdef CONFIG_MMU -#include "ptrace_mm.c" -#else -#include "ptrace_no.c" +void user_enable_block_step(struct task_struct *child) +{ + unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; + put_reg(child, PT_SR, tmp | T0_BIT); +} #endif + +void user_disable_single_step(struct task_struct *child) +{ + singlestep_disable(child); +} + +long arch_ptrace(struct task_struct *child, long request, + unsigned long addr, unsigned long data) +{ + unsigned long tmp; + int i, ret = 0; + int regno = addr >> 2; /* temporary hack. */ + unsigned long __user *datap = (unsigned long __user *) data; + + switch (request) { + /* read the word at location addr in the USER area. */ + case PTRACE_PEEKUSR: + if (addr & 3) + goto out_eio; + + if (regno >= 0 && regno < 19) { + tmp = get_reg(child, regno); + } else if (regno >= 21 && regno < 49) { + tmp = child->thread.fp[regno - 21]; + /* Convert internal fpu reg representation + * into long double format + */ + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) + tmp = ((tmp & 0xffff0000) << 15) | + ((tmp & 0x0000ffff) << 16); +#ifndef CONFIG_MMU + } else if (regno == 49) { + tmp = child->mm->start_code; + } else if (regno == 50) { + tmp = child->mm->start_data; + } else if (regno == 51) { + tmp = child->mm->end_code; +#endif + } else + goto out_eio; + ret = put_user(tmp, datap); + break; + + case PTRACE_POKEUSR: + /* write the word at location addr in the USER area */ + if (addr & 3) + goto out_eio; + + if (regno == PT_SR) { + data &= SR_MASK; + data |= get_reg(child, PT_SR) & ~SR_MASK; + } + if (regno >= 0 && regno < 19) { + if (put_reg(child, regno, data)) + goto out_eio; + } else if (regno >= 21 && regno < 48) { + /* Convert long double format + * into internal fpu reg representation + */ + if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) { + data <<= 15; + data = (data & 0xffff0000) | + ((data & 0x0000ffff) >> 1); + } + child->thread.fp[regno - 21] = data; + } else + goto out_eio; + break; + + case PTRACE_GETREGS: /* Get all gp regs from the child. */ + for (i = 0; i < 19; i++) { + tmp = get_reg(child, i); + ret = put_user(tmp, datap); + if (ret) + break; + datap++; + } + break; + + case PTRACE_SETREGS: /* Set all gp regs in the child. */ + for (i = 0; i < 19; i++) { + ret = get_user(tmp, datap); + if (ret) + break; + if (i == PT_SR) { + tmp &= SR_MASK; + tmp |= get_reg(child, PT_SR) & ~SR_MASK; + } + put_reg(child, i, tmp); + datap++; + } + break; + + case PTRACE_GETFPREGS: /* Get the child FPU state. */ + if (copy_to_user(datap, &child->thread.fp, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + + case PTRACE_SETFPREGS: /* Set the child FPU state. */ + if (copy_from_user(&child->thread.fp, datap, + sizeof(struct user_m68kfp_struct))) + ret = -EFAULT; + break; + + case PTRACE_GET_THREAD_AREA: + ret = put_user(task_thread_info(child)->tp_value, datap); + break; + + default: + ret = ptrace_request(child, request, addr, data); + break; + } + + return ret; +out_eio: + return -EIO; +} + +asmlinkage void syscall_trace(void) +{ + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) + ? 0x80 : 0)); + /* + * this isn't the same as continuing with a signal, but it will do + * for normal use. strace only continues with a signal if the + * stopping signal is not SIGTRAP. -brl + */ + if (current->exit_code) { + send_sig(current->exit_code, current, 1); + current->exit_code = 0; + } +} + +#if defined(CONFIG_COLDFIRE) || !defined(CONFIG_MMU) +asmlinkage int syscall_trace_enter(void) +{ + int ret = 0; + + if (test_thread_flag(TIF_SYSCALL_TRACE)) + ret = tracehook_report_syscall_entry(task_pt_regs(current)); + return ret; +} + +asmlinkage void syscall_trace_leave(void) +{ + if (test_thread_flag(TIF_SYSCALL_TRACE)) + tracehook_report_syscall_exit(task_pt_regs(current), 0); +} +#endif /* CONFIG_COLDFIRE */ diff --git a/arch/m68k/kernel/ptrace_mm.c b/arch/m68k/kernel/ptrace_mm.c deleted file mode 100644 index 7bc999b7352..00000000000 --- a/arch/m68k/kernel/ptrace_mm.c +++ /dev/null @@ -1,295 +0,0 @@ -/* - * linux/arch/m68k/kernel/ptrace.c - * - * Copyright (C) 1994 by Hamish Macdonald - * Taken from linux/kernel/ptrace.c and modified for M680x0. - * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of - * this archive for more details. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/signal.h> -#include <linux/tracehook.h> - -#include <asm/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/processor.h> - -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -/* determines which bits in the SR the user has access to. */ -/* 1 = access 0 = no access */ -#define SR_MASK 0x001f - -/* sets the trace bits. */ -#define TRACE_BITS 0xC000 -#define T1_BIT 0x8000 -#define T0_BIT 0x4000 - -/* Find the stack offset for a register, relative to thread.esp0. */ -#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) -#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ - - sizeof(struct switch_stack)) -/* Mapping from PT_xxx to the stack offset at which the register is - saved. Notice that usp has no stack-slot and needs to be treated - specially (see get_reg/put_reg below). */ -static const int regoff[] = { - [0] = PT_REG(d1), - [1] = PT_REG(d2), - [2] = PT_REG(d3), - [3] = PT_REG(d4), - [4] = PT_REG(d5), - [5] = SW_REG(d6), - [6] = SW_REG(d7), - [7] = PT_REG(a0), - [8] = PT_REG(a1), - [9] = PT_REG(a2), - [10] = SW_REG(a3), - [11] = SW_REG(a4), - [12] = SW_REG(a5), - [13] = SW_REG(a6), - [14] = PT_REG(d0), - [15] = -1, - [16] = PT_REG(orig_d0), - [17] = PT_REG(sr), - [18] = PT_REG(pc), -}; - -/* - * Get contents of register REGNO in task TASK. - */ -static inline long get_reg(struct task_struct *task, int regno) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); - else - return 0; - /* Need to take stkadj into account. */ - if (regno == PT_SR || regno == PT_PC) { - long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); - addr = (unsigned long *) ((unsigned long)addr + stkadj); - /* The sr is actually a 16 bit register. */ - if (regno == PT_SR) - return *(unsigned short *)addr; - } - return *addr; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, int regno, - unsigned long data) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); - else - return -1; - /* Need to take stkadj into account. */ - if (regno == PT_SR || regno == PT_PC) { - long stkadj = *(long *)(task->thread.esp0 + PT_REG(stkadj)); - addr = (unsigned long *) ((unsigned long)addr + stkadj); - /* The sr is actually a 16 bit register. */ - if (regno == PT_SR) { - *(unsigned short *)addr = data; - return 0; - } - } - *addr = data; - return 0; -} - -/* - * Make sure the single step bit is not set. - */ -static inline void singlestep_disable(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp); - clear_tsk_thread_flag(child, TIF_DELAYED_TRACE); -} - -/* - * Called by kernel/ptrace.c when detaching.. - */ -void ptrace_disable(struct task_struct *child) -{ - singlestep_disable(child); -} - -void user_enable_single_step(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp | T1_BIT); - set_tsk_thread_flag(child, TIF_DELAYED_TRACE); -} - -void user_enable_block_step(struct task_struct *child) -{ - unsigned long tmp = get_reg(child, PT_SR) & ~TRACE_BITS; - put_reg(child, PT_SR, tmp | T0_BIT); -} - -void user_disable_single_step(struct task_struct *child) -{ - singlestep_disable(child); -} - -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - unsigned long tmp; - int i, ret = 0; - int regno = addr >> 2; /* temporary hack. */ - unsigned long __user *datap = (unsigned long __user *) data; - - switch (request) { - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: - if (addr & 3) - goto out_eio; - - if (regno >= 0 && regno < 19) { - tmp = get_reg(child, regno); - } else if (regno >= 21 && regno < 49) { - tmp = child->thread.fp[regno - 21]; - /* Convert internal fpu reg representation - * into long double format - */ - if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) - tmp = ((tmp & 0xffff0000) << 15) | - ((tmp & 0x0000ffff) << 16); - } else - goto out_eio; - ret = put_user(tmp, datap); - break; - - case PTRACE_POKEUSR: - /* write the word at location addr in the USER area */ - if (addr & 3) - goto out_eio; - - if (regno == PT_SR) { - data &= SR_MASK; - data |= get_reg(child, PT_SR) & ~SR_MASK; - } - if (regno >= 0 && regno < 19) { - if (put_reg(child, regno, data)) - goto out_eio; - } else if (regno >= 21 && regno < 48) { - /* Convert long double format - * into internal fpu reg representation - */ - if (FPU_IS_EMU && (regno < 45) && !(regno % 3)) { - data <<= 15; - data = (data & 0xffff0000) | - ((data & 0x0000ffff) >> 1); - } - child->thread.fp[regno - 21] = data; - } else - goto out_eio; - break; - - case PTRACE_GETREGS: /* Get all gp regs from the child. */ - for (i = 0; i < 19; i++) { - tmp = get_reg(child, i); - ret = put_user(tmp, datap); - if (ret) - break; - datap++; - } - break; - - case PTRACE_SETREGS: /* Set all gp regs in the child. */ - for (i = 0; i < 19; i++) { - ret = get_user(tmp, datap); - if (ret) - break; - if (i == PT_SR) { - tmp &= SR_MASK; - tmp |= get_reg(child, PT_SR) & ~SR_MASK; - } - put_reg(child, i, tmp); - datap++; - } - break; - - case PTRACE_GETFPREGS: /* Get the child FPU state. */ - if (copy_to_user(datap, &child->thread.fp, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - - case PTRACE_SETFPREGS: /* Set the child FPU state. */ - if (copy_from_user(&child->thread.fp, datap, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - - case PTRACE_GET_THREAD_AREA: - ret = put_user(task_thread_info(child)->tp_value, datap); - break; - - default: - ret = ptrace_request(child, request, addr, data); - break; - } - - return ret; -out_eio: - return -EIO; -} - -asmlinkage void syscall_trace(void) -{ - ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) - ? 0x80 : 0)); - /* - * this isn't the same as continuing with a signal, but it will do - * for normal use. strace only continues with a signal if the - * stopping signal is not SIGTRAP. -brl - */ - if (current->exit_code) { - send_sig(current->exit_code, current, 1); - current->exit_code = 0; - } -} - -#ifdef CONFIG_COLDFIRE -asmlinkage int syscall_trace_enter(void) -{ - int ret = 0; - - if (test_thread_flag(TIF_SYSCALL_TRACE)) - ret = tracehook_report_syscall_entry(task_pt_regs(current)); - return ret; -} - -asmlinkage void syscall_trace_leave(void) -{ - if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall_exit(task_pt_regs(current), 0); -} -#endif /* CONFIG_COLDFIRE */ diff --git a/arch/m68k/kernel/ptrace_no.c b/arch/m68k/kernel/ptrace_no.c deleted file mode 100644 index 6709fb70733..00000000000 --- a/arch/m68k/kernel/ptrace_no.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/ptrace.c - * - * Copyright (C) 1994 by Hamish Macdonald - * Taken from linux/kernel/ptrace.c and modified for M680x0. - * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General - * Public License. See the file COPYING in the main directory of - * this archive for more details. - */ - -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/smp.h> -#include <linux/errno.h> -#include <linux/ptrace.h> -#include <linux/user.h> -#include <linux/signal.h> -#include <linux/tracehook.h> - -#include <asm/uaccess.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/system.h> -#include <asm/processor.h> - -/* - * does not yet catch signals sent when the child dies. - * in exit.c or in signal.c. - */ - -/* determines which bits in the SR the user has access to. */ -/* 1 = access 0 = no access */ -#define SR_MASK 0x001f - -/* sets the trace bits. */ -#define TRACE_BITS 0x8000 - -/* Find the stack offset for a register, relative to thread.esp0. */ -#define PT_REG(reg) ((long)&((struct pt_regs *)0)->reg) -#define SW_REG(reg) ((long)&((struct switch_stack *)0)->reg \ - - sizeof(struct switch_stack)) -/* Mapping from PT_xxx to the stack offset at which the register is - saved. Notice that usp has no stack-slot and needs to be treated - specially (see get_reg/put_reg below). */ -static int regoff[] = { - PT_REG(d1), PT_REG(d2), PT_REG(d3), PT_REG(d4), - PT_REG(d5), SW_REG(d6), SW_REG(d7), PT_REG(a0), - PT_REG(a1), PT_REG(a2), SW_REG(a3), SW_REG(a4), - SW_REG(a5), SW_REG(a6), PT_REG(d0), -1, - PT_REG(orig_d0), PT_REG(sr), PT_REG(pc), -}; - -/* - * Get contents of register REGNO in task TASK. - */ -static inline long get_reg(struct task_struct *task, int regno) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *)(task->thread.esp0 + regoff[regno]); - else - return 0; - return *addr; -} - -/* - * Write contents of register REGNO in task TASK. - */ -static inline int put_reg(struct task_struct *task, int regno, - unsigned long data) -{ - unsigned long *addr; - - if (regno == PT_USP) - addr = &task->thread.usp; - else if (regno < ARRAY_SIZE(regoff)) - addr = (unsigned long *) (task->thread.esp0 + regoff[regno]); - else - return -1; - *addr = data; - return 0; -} - -void user_enable_single_step(struct task_struct *task) -{ - unsigned long srflags; - srflags = get_reg(task, PT_SR) | (TRACE_BITS << 16); - put_reg(task, PT_SR, srflags); -} - -void user_disable_single_step(struct task_struct *task) -{ - unsigned long srflags; - srflags = get_reg(task, PT_SR) & ~(TRACE_BITS << 16); - put_reg(task, PT_SR, srflags); -} - -/* - * Called by kernel/ptrace.c when detaching.. - * - * Make sure the single step bit is not set. - */ -void ptrace_disable(struct task_struct *child) -{ - /* make sure the single step bit is not set. */ - user_disable_single_step(child); -} - -long arch_ptrace(struct task_struct *child, long request, - unsigned long addr, unsigned long data) -{ - int ret; - int regno = addr >> 2; - unsigned long __user *datap = (unsigned long __user *) data; - - switch (request) { - /* read the word at location addr in the USER area. */ - case PTRACE_PEEKUSR: { - unsigned long tmp; - - ret = -EIO; - if ((addr & 3) || addr > sizeof(struct user) - 3) - break; - - tmp = 0; /* Default return condition */ - ret = -EIO; - if (regno < 19) { - tmp = get_reg(child, regno); - if (regno == PT_SR) - tmp >>= 16; - } else if (regno >= 21 && regno < 49) { - tmp = child->thread.fp[regno - 21]; - } else if (regno == 49) { - tmp = child->mm->start_code; - } else if (regno == 50) { - tmp = child->mm->start_data; - } else if (regno == 51) { - tmp = child->mm->end_code; - } else - break; - ret = put_user(tmp, datap); - break; - } - - case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ - ret = -EIO; - if ((addr & 3) || addr > sizeof(struct user) - 3) - break; - - if (regno == PT_SR) { - data &= SR_MASK; - data <<= 16; - data |= get_reg(child, PT_SR) & ~(SR_MASK << 16); - } - if (regno < 19) { - if (put_reg(child, regno, data)) - break; - ret = 0; - break; - } - if (regno >= 21 && regno < 48) - { - child->thread.fp[regno - 21] = data; - ret = 0; - } - break; - - case PTRACE_GETREGS: { /* Get all gp regs from the child. */ - int i; - unsigned long tmp; - for (i = 0; i < 19; i++) { - tmp = get_reg(child, i); - if (i == PT_SR) - tmp >>= 16; - if (put_user(tmp, datap)) { - ret = -EFAULT; - break; - } - datap++; - } - ret = 0; - break; - } - - case PTRACE_SETREGS: { /* Set all gp regs in the child. */ - int i; - unsigned long tmp; - for (i = 0; i < 19; i++) { - if (get_user(tmp, datap)) { - ret = -EFAULT; - break; - } - if (i == PT_SR) { - tmp &= SR_MASK; - tmp <<= 16; - tmp |= get_reg(child, PT_SR) & ~(SR_MASK << 16); - } - put_reg(child, i, tmp); - datap++; - } - ret = 0; - break; - } - -#ifdef PTRACE_GETFPREGS - case PTRACE_GETFPREGS: { /* Get the child FPU state. */ - ret = 0; - if (copy_to_user(datap, &child->thread.fp, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - } -#endif - -#ifdef PTRACE_SETFPREGS - case PTRACE_SETFPREGS: { /* Set the child FPU state. */ - ret = 0; - if (copy_from_user(&child->thread.fp, datap, - sizeof(struct user_m68kfp_struct))) - ret = -EFAULT; - break; - } -#endif - - case PTRACE_GET_THREAD_AREA: - ret = put_user(task_thread_info(child)->tp_value, datap); - break; - - default: - ret = ptrace_request(child, request, addr, data); - break; - } - return ret; -} - -asmlinkage int syscall_trace_enter(void) -{ - int ret = 0; - - if (test_thread_flag(TIF_SYSCALL_TRACE)) - ret = tracehook_report_syscall_entry(task_pt_regs(current)); - return ret; -} - -asmlinkage void syscall_trace_leave(void) -{ - if (test_thread_flag(TIF_SYSCALL_TRACE)) - tracehook_report_syscall_exit(task_pt_regs(current), 0); -} diff --git a/arch/m68k/kernel/relocate_kernel.S b/arch/m68k/kernel/relocate_kernel.S new file mode 100644 index 00000000000..3e09a89067a --- /dev/null +++ b/arch/m68k/kernel/relocate_kernel.S @@ -0,0 +1,159 @@ +#include <linux/linkage.h> + +#include <asm/asm-offsets.h> +#include <asm/page.h> +#include <asm/setup.h> + + +#define MMU_BASE 8 /* MMU flags base in cpu_mmu_flags */ + +.text + +ENTRY(relocate_new_kernel) + movel %sp@(4),%a0 /* a0 = ptr */ + movel %sp@(8),%a1 /* a1 = start */ + movel %sp@(12),%d1 /* d1 = cpu_mmu_flags */ + movew #PAGE_MASK,%d2 /* d2 = PAGE_MASK */ + + /* Disable MMU */ + + btst #MMU_BASE + MMUB_68851,%d1 + jeq 3f + +1: /* 68851 or 68030 */ + + lea %pc@(.Lcopy),%a4 +2: addl #0x00000000,%a4 /* virt_to_phys() */ + + .section ".m68k_fixup","aw" + .long M68K_FIXUP_MEMOFFSET, 2b+2 + .previous + + .chip 68030 + pmove %tc,%d0 /* Disable MMU */ + bclr #7,%d0 + pmove %d0,%tc + jmp %a4@ /* Jump to physical .Lcopy */ + .chip 68k + +3: + btst #MMU_BASE + MMUB_68030,%d1 + jne 1b + + btst #MMU_BASE + MMUB_68040,%d1 + jeq 6f + +4: /* 68040 or 68060 */ + + lea %pc@(.Lcont040),%a4 +5: addl #0x00000000,%a4 /* virt_to_phys() */ + + .section ".m68k_fixup","aw" + .long M68K_FIXUP_MEMOFFSET, 5b+2 + .previous + + movel %a4,%d0 + andl #0xff000000,%d0 + orw #0xe020,%d0 /* Map 16 MiB, enable, cacheable */ + .chip 68040 + movec %d0,%itt0 + movec %d0,%dtt0 + .chip 68k + jmp %a4@ /* Jump to physical .Lcont040 */ + +.Lcont040: + moveq #0,%d0 + .chip 68040 + movec %d0,%tc /* Disable MMU */ + movec %d0,%itt0 + movec %d0,%itt1 + movec %d0,%dtt0 + movec %d0,%dtt1 + .chip 68k + jra .Lcopy + +6: + btst #MMU_BASE + MMUB_68060,%d1 + jne 4b + +.Lcopy: + movel %a0@+,%d0 /* d0 = entry = *ptr */ + jeq .Lflush + + btst #2,%d0 /* entry & IND_DONE? */ + jne .Lflush + + btst #1,%d0 /* entry & IND_INDIRECTION? */ + jeq 1f + andw %d2,%d0 + movel %d0,%a0 /* ptr = entry & PAGE_MASK */ + jra .Lcopy + +1: + btst #0,%d0 /* entry & IND_DESTINATION? */ + jeq 2f + andw %d2,%d0 + movel %d0,%a2 /* a2 = dst = entry & PAGE_MASK */ + jra .Lcopy + +2: + btst #3,%d0 /* entry & IND_SOURCE? */ + jeq .Lcopy + + andw %d2,%d0 + movel %d0,%a3 /* a3 = src = entry & PAGE_MASK */ + movew #PAGE_SIZE/32 - 1,%d0 /* d0 = PAGE_SIZE/32 - 1 */ +3: + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + movel %a3@+,%a2@+ /* *dst++ = *src++ */ + dbf %d0, 3b + jra .Lcopy + +.Lflush: + /* Flush all caches */ + + btst #CPUB_68020,%d1 + jeq 2f + +1: /* 68020 or 68030 */ + .chip 68030 + movec %cacr,%d0 + orw #0x808,%d0 + movec %d0,%cacr + .chip 68k + jra .Lreincarnate + +2: + btst #CPUB_68030,%d1 + jne 1b + + btst #CPUB_68040,%d1 + jeq 4f + +3: /* 68040 or 68060 */ + .chip 68040 + nop + cpusha %bc + nop + cinva %bc + nop + .chip 68k + jra .Lreincarnate + +4: + btst #CPUB_68060,%d1 + jne 3b + +.Lreincarnate: + jmp %a1@ + +relocate_new_kernel_end: + +ENTRY(relocate_new_kernel_size) + .long relocate_new_kernel_end - relocate_new_kernel diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c index d872ce4807c..5b8ec4d5f8e 100644 --- a/arch/m68k/kernel/setup_mm.c +++ b/arch/m68k/kernel/setup_mm.c @@ -26,6 +26,7 @@ #include <linux/initrd.h> #include <asm/bootinfo.h> +#include <asm/byteorder.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/fpu.h> @@ -71,12 +72,12 @@ EXPORT_SYMBOL(m68k_num_memory); int m68k_realnum_memory; EXPORT_SYMBOL(m68k_realnum_memory); unsigned long m68k_memoffset; -struct mem_info m68k_memory[NUM_MEMINFO]; +struct m68k_mem_info m68k_memory[NUM_MEMINFO]; EXPORT_SYMBOL(m68k_memory); -struct mem_info m68k_ramdisk; +static struct m68k_mem_info m68k_ramdisk __initdata; -static char m68k_command_line[CL_SIZE]; +static char m68k_command_line[CL_SIZE] __initdata; void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL; /* machine dependent irq functions */ @@ -84,7 +85,6 @@ void (*mach_init_IRQ) (void) __initdata = NULL; void (*mach_get_model) (char *model); void (*mach_get_hardware_list) (struct seq_file *m); /* machine dependent timer functions */ -unsigned long (*mach_gettimeoffset) (void); int (*mach_hwclk) (int, struct rtc_time*); EXPORT_SYMBOL(mach_hwclk); int (*mach_set_clock_mmss) (unsigned long); @@ -144,11 +144,16 @@ extern void paging_init(void); static void __init m68k_parse_bootinfo(const struct bi_record *record) { - while (record->tag != BI_LAST) { + uint16_t tag; + + save_bootinfo(record); + + while ((tag = be16_to_cpu(record->tag)) != BI_LAST) { int unknown = 0; - const unsigned long *data = record->data; + const void *data = record->data; + uint16_t size = be16_to_cpu(record->size); - switch (record->tag) { + switch (tag) { case BI_MACHTYPE: case BI_CPUTYPE: case BI_FPUTYPE: @@ -158,20 +163,27 @@ static void __init m68k_parse_bootinfo(const struct bi_record *record) case BI_MEMCHUNK: if (m68k_num_memory < NUM_MEMINFO) { - m68k_memory[m68k_num_memory].addr = data[0]; - m68k_memory[m68k_num_memory].size = data[1]; + const struct mem_info *m = data; + m68k_memory[m68k_num_memory].addr = + be32_to_cpu(m->addr); + m68k_memory[m68k_num_memory].size = + be32_to_cpu(m->size); m68k_num_memory++; } else - printk("m68k_parse_bootinfo: too many memory chunks\n"); + pr_warn("%s: too many memory chunks\n", + __func__); break; case BI_RAMDISK: - m68k_ramdisk.addr = data[0]; - m68k_ramdisk.size = data[1]; + { + const struct mem_info *m = data; + m68k_ramdisk.addr = be32_to_cpu(m->addr); + m68k_ramdisk.size = be32_to_cpu(m->size); + } break; case BI_COMMAND_LINE: - strlcpy(m68k_command_line, (const char *)data, + strlcpy(m68k_command_line, data, sizeof(m68k_command_line)); break; @@ -198,17 +210,16 @@ static void __init m68k_parse_bootinfo(const struct bi_record *record) unknown = 1; } if (unknown) - printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n", - record->tag); - record = (struct bi_record *)((unsigned long)record + - record->size); + pr_warn("%s: unknown tag 0x%04x ignored\n", __func__, + tag); + record = (struct bi_record *)((unsigned long)record + size); } m68k_realnum_memory = m68k_num_memory; #ifdef CONFIG_SINGLE_MEMORY_CHUNK if (m68k_num_memory > 1) { - printk("Ignoring last %i chunks of physical memory\n", - (m68k_num_memory - 1)); + pr_warn("%s: ignoring last %i chunks of physical memory\n", + __func__, (m68k_num_memory - 1)); m68k_num_memory = 1; } #endif @@ -220,7 +231,7 @@ void __init setup_arch(char **cmdline_p) int i; #endif - /* The bootinfo is located right after the kernel bss */ + /* The bootinfo is located right after the kernel */ if (!CPU_IS_COLDFIRE) m68k_parse_bootinfo((const struct bi_record *)_end); @@ -248,7 +259,7 @@ void __init setup_arch(char **cmdline_p) asm (".chip 68060; movec %%pcr,%0; .chip 68k" : "=d" (pcr)); if (((pcr >> 8) & 0xff) <= 5) { - printk("Enabling workaround for errata I14\n"); + pr_warn("Enabling workaround for errata I14\n"); asm (".chip 68060; movec %0,%%pcr; .chip 68k" : : "d" (pcr | 0x20)); } @@ -337,12 +348,12 @@ void __init setup_arch(char **cmdline_p) panic("No configuration setup"); } + paging_init(); + #ifdef CONFIG_NATFEAT nf_init(); #endif - paging_init(); - #ifndef CONFIG_SUN3 for (i = 1; i < m68k_num_memory; i++) free_bootmem_node(NODE_DATA(i), m68k_memory[i].addr, @@ -354,7 +365,7 @@ void __init setup_arch(char **cmdline_p) BOOTMEM_DEFAULT); initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr); initrd_end = initrd_start + m68k_ramdisk.size; - printk("initrd: %08lx - %08lx\n", initrd_start, initrd_end); + pr_info("initrd: %08lx - %08lx\n", initrd_start, initrd_end); } #endif @@ -382,6 +393,12 @@ void __init setup_arch(char **cmdline_p) isa_sex = 1; } #endif +#ifdef CONFIG_ATARI_ROM_ISA + if (MACH_IS_ATARI) { + isa_type = ISA_TYPE_ENEC; + isa_sex = 0; + } +#endif #endif } @@ -533,9 +550,9 @@ void check_bugs(void) { #ifndef CONFIG_M68KFPU_EMU if (m68k_fputype == 0) { - printk(KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, " + pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, " "WHICH IS REQUIRED BY LINUX/M68K ***\n"); - printk(KERN_EMERG "Upgrade your hardware or join the FPU " + pr_emerg("Upgrade your hardware or join the FPU " "emulation project\n"); panic("no FPU"); } diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c index ca3df0dc7e8..88c27d94a72 100644 --- a/arch/m68k/kernel/setup_no.c +++ b/arch/m68k/kernel/setup_no.c @@ -31,6 +31,7 @@ #include <linux/init.h> #include <linux/initrd.h> #include <linux/root_dev.h> +#include <linux/rtc.h> #include <asm/setup.h> #include <asm/irq.h> @@ -47,22 +48,26 @@ EXPORT_SYMBOL(memory_end); char __initdata command_line[COMMAND_LINE_SIZE]; /* machine dependent timer functions */ +void (*mach_sched_init)(irq_handler_t handler) __initdata = NULL; int (*mach_set_clock_mmss)(unsigned long); +int (*mach_hwclk) (int, struct rtc_time*); /* machine dependent reboot functions */ void (*mach_reset)(void); void (*mach_halt)(void); void (*mach_power_off)(void); -#ifdef CONFIG_M68328 +#ifdef CONFIG_M68000 +#if defined(CONFIG_M68328) #define CPU_NAME "MC68328" -#endif -#ifdef CONFIG_M68EZ328 +#elif defined(CONFIG_M68EZ328) #define CPU_NAME "MC68EZ328" -#endif -#ifdef CONFIG_M68VZ328 +#elif defined(CONFIG_M68VZ328) #define CPU_NAME "MC68VZ328" +#else +#define CPU_NAME "MC68000" #endif +#endif /* CONFIG_M68000 */ #ifdef CONFIG_M68360 #define CPU_NAME "MC68360" #endif @@ -112,7 +117,7 @@ void (*mach_power_off)(void); * * Returns: */ -void parse_uboot_commandline(char *commandp, int size) +static void __init parse_uboot_commandline(char *commandp, int size) { extern unsigned long _init_sp; unsigned long *sp; @@ -215,13 +220,10 @@ void __init setup_arch(char **cmdline_p) printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)\n"); #endif - pr_debug("KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " - "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, - (int) &_sdata, (int) &_edata, - (int) &_sbss, (int) &_ebss); - pr_debug("MEMORY -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x\n ", - (int) &_ebss, (int) memory_start, - (int) memory_start, (int) memory_end); + pr_debug("KERNEL -> TEXT=0x%p-0x%p DATA=0x%p-0x%p BSS=0x%p-0x%p\n", + _stext, _etext, _sdata, _edata, __bss_start, __bss_stop); + pr_debug("MEMORY -> ROMFS=0x%p-0x%06lx MEM=0x%06lx-0x%06lx\n ", + __bss_stop, memory_start, memory_start, memory_end); /* Keep a copy of command line */ *cmdline_p = &command_line[0]; diff --git a/arch/m68k/kernel/signal.c b/arch/m68k/kernel/signal.c index 2e25713e2ea..57fd286e4b0 100644 --- a/arch/m68k/kernel/signal.c +++ b/arch/m68k/kernel/signal.c @@ -1,5 +1,1140 @@ +/* + * linux/arch/m68k/kernel/signal.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * Linux/m68k support by Hamish Macdonald + * + * 68060 fixes by Jesper Skov + * + * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab + * + * mathemu support by Roman Zippel + * (Note: fpstate in the signal context is completely ignored for the emulator + * and the internal floating point format is put on stack) + */ + +/* + * ++roman (07/09/96): implemented signal stacks (specially for tosemu on + * Atari :-) Current limitation: Only one sigstack can be active at one time. + * If a second signal with SA_ONSTACK set arrives while working on a sigstack, + * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested + * signal handlers! + */ + +#include <linux/sched.h> +#include <linux/mm.h> +#include <linux/kernel.h> +#include <linux/signal.h> +#include <linux/syscalls.h> +#include <linux/errno.h> +#include <linux/wait.h> +#include <linux/ptrace.h> +#include <linux/unistd.h> +#include <linux/stddef.h> +#include <linux/highuid.h> +#include <linux/personality.h> +#include <linux/tty.h> +#include <linux/binfmts.h> +#include <linux/module.h> +#include <linux/tracehook.h> + +#include <asm/setup.h> +#include <asm/uaccess.h> +#include <asm/pgtable.h> +#include <asm/traps.h> +#include <asm/ucontext.h> +#include <asm/cacheflush.h> + #ifdef CONFIG_MMU -#include "signal_mm.c" + +/* + * Handle the slight differences in classic 68k and ColdFire trap frames. + */ +#ifdef CONFIG_COLDFIRE +#define FORMAT 4 +#define FMT4SIZE 0 #else -#include "signal_no.c" +#define FORMAT 0 +#define FMT4SIZE sizeof(((struct frame *)0)->un.fmt4) #endif + +static const int frame_size_change[16] = { + [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */ + [2] = sizeof(((struct frame *)0)->un.fmt2), + [3] = sizeof(((struct frame *)0)->un.fmt3), + [4] = FMT4SIZE, + [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */ + [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */ + [7] = sizeof(((struct frame *)0)->un.fmt7), + [8] = -1, /* sizeof(((struct frame *)0)->un.fmt8), */ + [9] = sizeof(((struct frame *)0)->un.fmt9), + [10] = sizeof(((struct frame *)0)->un.fmta), + [11] = sizeof(((struct frame *)0)->un.fmtb), + [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */ + [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */ + [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */ + [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */ +}; + +static inline int frame_extra_sizes(int f) +{ + return frame_size_change[f]; +} + +int handle_kernel_fault(struct pt_regs *regs) +{ + const struct exception_table_entry *fixup; + struct pt_regs *tregs; + + /* Are we prepared to handle this kernel fault? */ + fixup = search_exception_tables(regs->pc); + if (!fixup) + return 0; + + /* Create a new four word stack frame, discarding the old one. */ + regs->stkadj = frame_extra_sizes(regs->format); + tregs = (struct pt_regs *)((long)regs + regs->stkadj); + tregs->vector = regs->vector; + tregs->format = FORMAT; + tregs->pc = fixup->fixup; + tregs->sr = regs->sr; + + return 1; +} + +void ptrace_signal_deliver(void) +{ + struct pt_regs *regs = signal_pt_regs(); + if (regs->orig_d0 < 0) + return; + switch (regs->d0) { + case -ERESTARTNOHAND: + case -ERESTARTSYS: + case -ERESTARTNOINTR: + regs->d0 = regs->orig_d0; + regs->orig_d0 = -1; + regs->pc -= 2; + break; + } +} + +static inline void push_cache (unsigned long vaddr) +{ + /* + * Using the old cache_push_v() was really a big waste. + * + * What we are trying to do is to flush 8 bytes to ram. + * Flushing 2 cache lines of 16 bytes is much cheaper than + * flushing 1 or 2 pages, as previously done in + * cache_push_v(). + * Jes + */ + if (CPU_IS_040) { + unsigned long temp; + + __asm__ __volatile__ (".chip 68040\n\t" + "nop\n\t" + "ptestr (%1)\n\t" + "movec %%mmusr,%0\n\t" + ".chip 68k" + : "=r" (temp) + : "a" (vaddr)); + + temp &= PAGE_MASK; + temp |= vaddr & ~PAGE_MASK; + + __asm__ __volatile__ (".chip 68040\n\t" + "nop\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (temp)); + } + else if (CPU_IS_060) { + unsigned long temp; + __asm__ __volatile__ (".chip 68060\n\t" + "plpar (%0)\n\t" + ".chip 68k" + : "=a" (temp) + : "0" (vaddr)); + __asm__ __volatile__ (".chip 68060\n\t" + "cpushl %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (temp)); + } else if (!CPU_IS_COLDFIRE) { + /* + * 68030/68020 have no writeback cache; + * still need to clear icache. + * Note that vaddr is guaranteed to be long word aligned. + */ + unsigned long temp; + asm volatile ("movec %%cacr,%0" : "=r" (temp)); + temp += 4; + asm volatile ("movec %0,%%caar\n\t" + "movec %1,%%cacr" + : : "r" (vaddr), "r" (temp)); + asm volatile ("movec %0,%%caar\n\t" + "movec %1,%%cacr" + : : "r" (vaddr + 4), "r" (temp)); + } else { + /* CPU_IS_COLDFIRE */ +#if defined(CONFIG_CACHE_COPYBACK) + flush_cf_dcache(0, DCACHE_MAX_ADDR); +#endif + /* Invalidate instruction cache for the pushed bytes */ + clear_cf_icache(vaddr, vaddr + 8); + } +} + +static inline void adjustformat(struct pt_regs *regs) +{ +} + +static inline void save_a5_state(struct sigcontext *sc, struct pt_regs *regs) +{ +} + +#else /* CONFIG_MMU */ + +void ret_from_user_signal(void); +void ret_from_user_rt_signal(void); + +static inline int frame_extra_sizes(int f) +{ + /* No frame size adjustments required on non-MMU CPUs */ + return 0; +} + +static inline void adjustformat(struct pt_regs *regs) +{ + ((struct switch_stack *)regs - 1)->a5 = current->mm->start_data; + /* + * set format byte to make stack appear modulo 4, which it will + * be when doing the rte + */ + regs->format = 0x4; +} + +static inline void save_a5_state(struct sigcontext *sc, struct pt_regs *regs) +{ + sc->sc_a5 = ((struct switch_stack *)regs - 1)->a5; +} + +static inline void push_cache(unsigned long vaddr) +{ +} + +#endif /* CONFIG_MMU */ + +/* + * Do a signal return; undo the signal stack. + * + * Keep the return code on the stack quadword aligned! + * That makes the cache flush below easier. + */ + +struct sigframe +{ + char __user *pretcode; + int sig; + int code; + struct sigcontext __user *psc; + char retcode[8]; + unsigned long extramask[_NSIG_WORDS-1]; + struct sigcontext sc; +}; + +struct rt_sigframe +{ + char __user *pretcode; + int sig; + struct siginfo __user *pinfo; + void __user *puc; + char retcode[8]; + struct siginfo info; + struct ucontext uc; +}; + +#define FPCONTEXT_SIZE 216 +#define uc_fpstate uc_filler[0] +#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] +#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] + +#ifdef CONFIG_FPU + +static unsigned char fpu_version; /* version number of fpu, set by setup_frame */ + +static inline int restore_fpu_state(struct sigcontext *sc) +{ + int err = 1; + + if (FPU_IS_EMU) { + /* restore registers */ + memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); + memcpy(current->thread.fp, sc->sc_fpregs, 24); + return 0; + } + + if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { + /* Verify the frame format. */ + if (!(CPU_IS_060 || CPU_IS_COLDFIRE) && + (sc->sc_fpstate[0] != fpu_version)) + goto out; + if (CPU_IS_020_OR_030) { + if (m68k_fputype & FPU_68881 && + !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4)) + goto out; + if (m68k_fputype & FPU_68882 && + !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4)) + goto out; + } else if (CPU_IS_040) { + if (!(sc->sc_fpstate[1] == 0x00 || + sc->sc_fpstate[1] == 0x28 || + sc->sc_fpstate[1] == 0x60)) + goto out; + } else if (CPU_IS_060) { + if (!(sc->sc_fpstate[3] == 0x00 || + sc->sc_fpstate[3] == 0x60 || + sc->sc_fpstate[3] == 0xe0)) + goto out; + } else if (CPU_IS_COLDFIRE) { + if (!(sc->sc_fpstate[0] == 0x00 || + sc->sc_fpstate[0] == 0x05 || + sc->sc_fpstate[0] == 0xe5)) + goto out; + } else + goto out; + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fmovemd %0,%%fp0-%%fp1\n\t" + "fmovel %1,%%fpcr\n\t" + "fmovel %2,%%fpsr\n\t" + "fmovel %3,%%fpiar" + : /* no outputs */ + : "m" (sc->sc_fpregs[0]), + "m" (sc->sc_fpcntl[0]), + "m" (sc->sc_fpcntl[1]), + "m" (sc->sc_fpcntl[2])); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp1\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*sc->sc_fpregs), + "m" (*sc->sc_fpcntl)); + } + } + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("frestore %0" : : "m" (*sc->sc_fpstate)); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" + : : "m" (*sc->sc_fpstate)); + } + err = 0; + +out: + return err; +} + +static inline int rt_restore_fpu_state(struct ucontext __user *uc) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0); + fpregset_t fpregs; + int err = 1; + + if (FPU_IS_EMU) { + /* restore fpu control register */ + if (__copy_from_user(current->thread.fpcntl, + uc->uc_mcontext.fpregs.f_fpcntl, 12)) + goto out; + /* restore all other fpu register */ + if (__copy_from_user(current->thread.fp, + uc->uc_mcontext.fpregs.f_fpregs, 96)) + goto out; + return 0; + } + + if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) + goto out; + if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { + if (!(CPU_IS_060 || CPU_IS_COLDFIRE)) + context_size = fpstate[1]; + /* Verify the frame format. */ + if (!(CPU_IS_060 || CPU_IS_COLDFIRE) && + (fpstate[0] != fpu_version)) + goto out; + if (CPU_IS_020_OR_030) { + if (m68k_fputype & FPU_68881 && + !(context_size == 0x18 || context_size == 0xb4)) + goto out; + if (m68k_fputype & FPU_68882 && + !(context_size == 0x38 || context_size == 0xd4)) + goto out; + } else if (CPU_IS_040) { + if (!(context_size == 0x00 || + context_size == 0x28 || + context_size == 0x60)) + goto out; + } else if (CPU_IS_060) { + if (!(fpstate[3] == 0x00 || + fpstate[3] == 0x60 || + fpstate[3] == 0xe0)) + goto out; + } else if (CPU_IS_COLDFIRE) { + if (!(fpstate[3] == 0x00 || + fpstate[3] == 0x05 || + fpstate[3] == 0xe5)) + goto out; + } else + goto out; + if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, + sizeof(fpregs))) + goto out; + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fmovemd %0,%%fp0-%%fp7\n\t" + "fmovel %1,%%fpcr\n\t" + "fmovel %2,%%fpsr\n\t" + "fmovel %3,%%fpiar" + : /* no outputs */ + : "m" (fpregs.f_fpregs[0]), + "m" (fpregs.f_fpcntl[0]), + "m" (fpregs.f_fpcntl[1]), + "m" (fpregs.f_fpcntl[2])); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %0,%%fp0-%%fp7\n\t" + "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" + ".chip 68k" + : /* no outputs */ + : "m" (*fpregs.f_fpregs), + "m" (*fpregs.f_fpcntl)); + } + } + if (context_size && + __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, + context_size)) + goto out; + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("frestore %0" : : "m" (*fpstate)); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "frestore %0\n\t" + ".chip 68k" + : : "m" (*fpstate)); + } + err = 0; + +out: + return err; +} + +/* + * Set up a signal frame. + */ +static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) +{ + if (FPU_IS_EMU) { + /* save registers */ + memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); + memcpy(sc->sc_fpregs, current->thread.fp, 24); + return; + } + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fsave %0" + : : "m" (*sc->sc_fpstate) : "memory"); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*sc->sc_fpstate) : "memory"); + } + + if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { + fpu_version = sc->sc_fpstate[0]; + if (CPU_IS_020_OR_030 && + regs->vector >= (VEC_FPBRUC * 4) && + regs->vector <= (VEC_FPNAN * 4)) { + /* Clear pending exception in 68882 idle frame */ + if (*(unsigned short *) sc->sc_fpstate == 0x1f38) + sc->sc_fpstate[0x38] |= 1 << 3; + } + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fmovemd %%fp0-%%fp1,%0\n\t" + "fmovel %%fpcr,%1\n\t" + "fmovel %%fpsr,%2\n\t" + "fmovel %%fpiar,%3" + : "=m" (sc->sc_fpregs[0]), + "=m" (sc->sc_fpcntl[0]), + "=m" (sc->sc_fpcntl[1]), + "=m" (sc->sc_fpcntl[2]) + : /* no inputs */ + : "memory"); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp1,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*sc->sc_fpregs), + "=m" (*sc->sc_fpcntl) + : /* no inputs */ + : "memory"); + } + } +} + +static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) +{ + unsigned char fpstate[FPCONTEXT_SIZE]; + int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0); + int err = 0; + + if (FPU_IS_EMU) { + /* save fpu control register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl, + current->thread.fpcntl, 12); + /* save all other fpu register */ + err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, + current->thread.fp, 96); + return err; + } + + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fsave %0" : : "m" (*fpstate) : "memory"); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fsave %0\n\t" + ".chip 68k" + : : "m" (*fpstate) : "memory"); + } + + err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); + if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { + fpregset_t fpregs; + if (!(CPU_IS_060 || CPU_IS_COLDFIRE)) + context_size = fpstate[1]; + fpu_version = fpstate[0]; + if (CPU_IS_020_OR_030 && + regs->vector >= (VEC_FPBRUC * 4) && + regs->vector <= (VEC_FPNAN * 4)) { + /* Clear pending exception in 68882 idle frame */ + if (*(unsigned short *) fpstate == 0x1f38) + fpstate[0x38] |= 1 << 3; + } + if (CPU_IS_COLDFIRE) { + __asm__ volatile ("fmovemd %%fp0-%%fp7,%0\n\t" + "fmovel %%fpcr,%1\n\t" + "fmovel %%fpsr,%2\n\t" + "fmovel %%fpiar,%3" + : "=m" (fpregs.f_fpregs[0]), + "=m" (fpregs.f_fpcntl[0]), + "=m" (fpregs.f_fpcntl[1]), + "=m" (fpregs.f_fpcntl[2]) + : /* no inputs */ + : "memory"); + } else { + __asm__ volatile (".chip 68k/68881\n\t" + "fmovemx %%fp0-%%fp7,%0\n\t" + "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" + ".chip 68k" + : "=m" (*fpregs.f_fpregs), + "=m" (*fpregs.f_fpcntl) + : /* no inputs */ + : "memory"); + } + err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, + sizeof(fpregs)); + } + if (context_size) + err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, + context_size); + return err; +} + +#else /* CONFIG_FPU */ + +/* + * For the case with no FPU configured these all do nothing. + */ +static inline int restore_fpu_state(struct sigcontext *sc) +{ + return 0; +} + +static inline int rt_restore_fpu_state(struct ucontext __user *uc) +{ + return 0; +} + +static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) +{ +} + +static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) +{ + return 0; +} + +#endif /* CONFIG_FPU */ + +static int mangle_kernel_stack(struct pt_regs *regs, int formatvec, + void __user *fp) +{ + int fsize = frame_extra_sizes(formatvec >> 12); + if (fsize < 0) { + /* + * user process trying to return with weird frame format + */ +#ifdef DEBUG + printk("user process returning with weird frame format\n"); +#endif + return 1; + } + if (!fsize) { + regs->format = formatvec >> 12; + regs->vector = formatvec & 0xfff; + } else { + struct switch_stack *sw = (struct switch_stack *)regs - 1; + unsigned long buf[fsize / 2]; /* yes, twice as much */ + + /* that'll make sure that expansion won't crap over data */ + if (copy_from_user(buf + fsize / 4, fp, fsize)) + return 1; + + /* point of no return */ + regs->format = formatvec >> 12; + regs->vector = formatvec & 0xfff; +#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack)) + __asm__ __volatile__ ( +#ifdef CONFIG_COLDFIRE + " movel %0,%/sp\n\t" + " bra ret_from_signal\n" +#else + " movel %0,%/a0\n\t" + " subl %1,%/a0\n\t" /* make room on stack */ + " movel %/a0,%/sp\n\t" /* set stack pointer */ + /* move switch_stack and pt_regs */ + "1: movel %0@+,%/a0@+\n\t" + " dbra %2,1b\n\t" + " lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */ + " lsrl #2,%1\n\t" + " subql #1,%1\n\t" + /* copy to the gap we'd made */ + "2: movel %4@+,%/a0@+\n\t" + " dbra %1,2b\n\t" + " bral ret_from_signal\n" +#endif + : /* no outputs, it doesn't ever return */ + : "a" (sw), "d" (fsize), "d" (frame_offset/4-1), + "n" (frame_offset), "a" (buf + fsize/4) + : "a0"); +#undef frame_offset + } + return 0; +} + +static inline int +restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp) +{ + int formatvec; + struct sigcontext context; + int err = 0; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + /* get previous context */ + if (copy_from_user(&context, usc, sizeof(context))) + goto badframe; + + /* restore passed registers */ + regs->d0 = context.sc_d0; + regs->d1 = context.sc_d1; + regs->a0 = context.sc_a0; + regs->a1 = context.sc_a1; + regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); + regs->pc = context.sc_pc; + regs->orig_d0 = -1; /* disable syscall checks */ + wrusp(context.sc_usp); + formatvec = context.sc_formatvec; + + err = restore_fpu_state(&context); + + if (err || mangle_kernel_stack(regs, formatvec, fp)) + goto badframe; + + return 0; + +badframe: + return 1; +} + +static inline int +rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, + struct ucontext __user *uc) +{ + int temp; + greg_t __user *gregs = uc->uc_mcontext.gregs; + unsigned long usp; + int err; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + + err = __get_user(temp, &uc->uc_mcontext.version); + if (temp != MCONTEXT_VERSION) + goto badframe; + /* restore passed registers */ + err |= __get_user(regs->d0, &gregs[0]); + err |= __get_user(regs->d1, &gregs[1]); + err |= __get_user(regs->d2, &gregs[2]); + err |= __get_user(regs->d3, &gregs[3]); + err |= __get_user(regs->d4, &gregs[4]); + err |= __get_user(regs->d5, &gregs[5]); + err |= __get_user(sw->d6, &gregs[6]); + err |= __get_user(sw->d7, &gregs[7]); + err |= __get_user(regs->a0, &gregs[8]); + err |= __get_user(regs->a1, &gregs[9]); + err |= __get_user(regs->a2, &gregs[10]); + err |= __get_user(sw->a3, &gregs[11]); + err |= __get_user(sw->a4, &gregs[12]); + err |= __get_user(sw->a5, &gregs[13]); + err |= __get_user(sw->a6, &gregs[14]); + err |= __get_user(usp, &gregs[15]); + wrusp(usp); + err |= __get_user(regs->pc, &gregs[16]); + err |= __get_user(temp, &gregs[17]); + regs->sr = (regs->sr & 0xff00) | (temp & 0xff); + regs->orig_d0 = -1; /* disable syscall checks */ + err |= __get_user(temp, &uc->uc_formatvec); + + err |= rt_restore_fpu_state(uc); + err |= restore_altstack(&uc->uc_stack); + + if (err) + goto badframe; + + if (mangle_kernel_stack(regs, temp, &uc->uc_extra)) + goto badframe; + + return 0; + +badframe: + return 1; +} + +asmlinkage int do_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); + sigset_t set; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__get_user(set.sig[0], &frame->sc.sc_mask) || + (_NSIG_WORDS > 1 && + __copy_from_user(&set.sig[1], &frame->extramask, + sizeof(frame->extramask)))) + goto badframe; + + set_current_blocked(&set); + + if (restore_sigcontext(regs, &frame->sc, frame + 1)) + goto badframe; + return regs->d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +asmlinkage int do_rt_sigreturn(unsigned long __unused) +{ + struct switch_stack *sw = (struct switch_stack *) &__unused; + struct pt_regs *regs = (struct pt_regs *) (sw + 1); + unsigned long usp = rdusp(); + struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); + sigset_t set; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + set_current_blocked(&set); + + if (rt_restore_ucontext(regs, sw, &frame->uc)) + goto badframe; + return regs->d0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, + unsigned long mask) +{ + sc->sc_mask = mask; + sc->sc_usp = rdusp(); + sc->sc_d0 = regs->d0; + sc->sc_d1 = regs->d1; + sc->sc_a0 = regs->a0; + sc->sc_a1 = regs->a1; + sc->sc_sr = regs->sr; + sc->sc_pc = regs->pc; + sc->sc_formatvec = regs->format << 12 | regs->vector; + save_a5_state(sc, regs); + save_fpu_state(sc, regs); +} + +static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) +{ + struct switch_stack *sw = (struct switch_stack *)regs - 1; + greg_t __user *gregs = uc->uc_mcontext.gregs; + int err = 0; + + err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); + err |= __put_user(regs->d0, &gregs[0]); + err |= __put_user(regs->d1, &gregs[1]); + err |= __put_user(regs->d2, &gregs[2]); + err |= __put_user(regs->d3, &gregs[3]); + err |= __put_user(regs->d4, &gregs[4]); + err |= __put_user(regs->d5, &gregs[5]); + err |= __put_user(sw->d6, &gregs[6]); + err |= __put_user(sw->d7, &gregs[7]); + err |= __put_user(regs->a0, &gregs[8]); + err |= __put_user(regs->a1, &gregs[9]); + err |= __put_user(regs->a2, &gregs[10]); + err |= __put_user(sw->a3, &gregs[11]); + err |= __put_user(sw->a4, &gregs[12]); + err |= __put_user(sw->a5, &gregs[13]); + err |= __put_user(sw->a6, &gregs[14]); + err |= __put_user(rdusp(), &gregs[15]); + err |= __put_user(regs->pc, &gregs[16]); + err |= __put_user(regs->sr, &gregs[17]); + err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec); + err |= rt_save_fpu_state(uc, regs); + return err; +} + +static inline void __user * +get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +{ + unsigned long usp; + + /* Default to using normal stack. */ + usp = rdusp(); + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa.sa_flags & SA_ONSTACK) { + if (!sas_ss_flags(usp)) + usp = current->sas_ss_sp + current->sas_ss_size; + } + return (void __user *)((usp - frame_size) & -8UL); +} + +static int setup_frame (int sig, struct k_sigaction *ka, + sigset_t *set, struct pt_regs *regs) +{ + struct sigframe __user *frame; + int fsize = frame_extra_sizes(regs->format); + struct sigcontext context; + int err = 0; + + if (fsize < 0) { +#ifdef DEBUG + printk ("setup_frame: Unknown frame format %#x\n", + regs->format); +#endif + goto give_sigsegv; + } + + frame = get_sigframe(ka, regs, sizeof(*frame) + fsize); + + if (fsize) + err |= copy_to_user (frame + 1, regs + 1, fsize); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + + err |= __put_user(regs->vector, &frame->code); + err |= __put_user(&frame->sc, &frame->psc); + + if (_NSIG_WORDS > 1) + err |= copy_to_user(frame->extramask, &set->sig[1], + sizeof(frame->extramask)); + + setup_sigcontext(&context, regs, set->sig[0]); + err |= copy_to_user (&frame->sc, &context, sizeof(context)); + + /* Set up to return from userspace. */ +#ifdef CONFIG_MMU + err |= __put_user(frame->retcode, &frame->pretcode); + /* moveq #,d0; trap #0 */ + err |= __put_user(0x70004e40 + (__NR_sigreturn << 16), + (long __user *)(frame->retcode)); +#else + err |= __put_user((void *) ret_from_user_signal, &frame->pretcode); +#endif + + if (err) + goto give_sigsegv; + + push_cache ((unsigned long) &frame->retcode); + + /* + * Set up registers for signal handler. All the state we are about + * to destroy is successfully copied to sigframe. + */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + adjustformat(regs); + + /* + * This is subtle; if we build more than one sigframe, all but the + * first one will see frame format 0 and have fsize == 0, so we won't + * screw stkadj. + */ + if (fsize) + regs->stkadj = fsize; + + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#ifdef DEBUG + printk("Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return 0; + +give_sigsegv: + force_sigsegv(sig, current); + return err; +} + +static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *set, struct pt_regs *regs) +{ + struct rt_sigframe __user *frame; + int fsize = frame_extra_sizes(regs->format); + int err = 0; + + if (fsize < 0) { +#ifdef DEBUG + printk ("setup_frame: Unknown frame format %#x\n", + regs->format); +#endif + goto give_sigsegv; + } + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + if (fsize) + err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); + + err |= __put_user((current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig), + &frame->sig); + err |= __put_user(&frame->info, &frame->pinfo); + err |= __put_user(&frame->uc, &frame->puc); + err |= copy_siginfo_to_user(&frame->info, info); + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(NULL, &frame->uc.uc_link); + err |= __save_altstack(&frame->uc.uc_stack, rdusp()); + err |= rt_setup_ucontext(&frame->uc, regs); + err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); + + /* Set up to return from userspace. */ +#ifdef CONFIG_MMU + err |= __put_user(frame->retcode, &frame->pretcode); +#ifdef __mcoldfire__ + /* movel #__NR_rt_sigreturn,d0; trap #0 */ + err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0)); + err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16), + (long __user *)(frame->retcode + 4)); +#else + /* moveq #,d0; notb d0; trap #0 */ + err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16), + (long __user *)(frame->retcode + 0)); + err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4)); +#endif +#else + err |= __put_user((void *) ret_from_user_rt_signal, &frame->pretcode); +#endif /* CONFIG_MMU */ + + if (err) + goto give_sigsegv; + + push_cache ((unsigned long) &frame->retcode); + + /* + * Set up registers for signal handler. All the state we are about + * to destroy is successfully copied to sigframe. + */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + adjustformat(regs); + + /* + * This is subtle; if we build more than one sigframe, all but the + * first one will see frame format 0 and have fsize == 0, so we won't + * screw stkadj. + */ + if (fsize) + regs->stkadj = fsize; + + /* Prepare to skip over the extra stuff in the exception frame. */ + if (regs->stkadj) { + struct pt_regs *tregs = + (struct pt_regs *)((ulong)regs + regs->stkadj); +#ifdef DEBUG + printk("Performing stackadjust=%04x\n", regs->stkadj); +#endif + /* This must be copied with decreasing addresses to + handle overlaps. */ + tregs->vector = 0; + tregs->format = 0; + tregs->pc = regs->pc; + tregs->sr = regs->sr; + } + return 0; + +give_sigsegv: + force_sigsegv(sig, current); + return err; +} + +static inline void +handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) +{ + switch (regs->d0) { + case -ERESTARTNOHAND: + if (!has_handler) + goto do_restart; + regs->d0 = -EINTR; + break; + + case -ERESTART_RESTARTBLOCK: + if (!has_handler) { + regs->d0 = __NR_restart_syscall; + regs->pc -= 2; + break; + } + regs->d0 = -EINTR; + break; + + case -ERESTARTSYS: + if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { + regs->d0 = -EINTR; + break; + } + /* fallthrough */ + case -ERESTARTNOINTR: + do_restart: + regs->d0 = regs->orig_d0; + regs->pc -= 2; + break; + } +} + +/* + * OK, we're invoking a handler + */ +static void +handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, + struct pt_regs *regs) +{ + sigset_t *oldset = sigmask_to_save(); + int err; + /* are we from a system call? */ + if (regs->orig_d0 >= 0) + /* If so, check system call restarting.. */ + handle_restart(regs, ka, 1); + + /* set up the stack frame */ + if (ka->sa.sa_flags & SA_SIGINFO) + err = setup_rt_frame(sig, ka, info, oldset, regs); + else + err = setup_frame(sig, ka, oldset, regs); + + if (err) + return; + + signal_delivered(sig, info, ka, regs, 0); + + if (test_thread_flag(TIF_DELAYED_TRACE)) { + regs->sr &= ~0x8000; + send_sig(SIGTRAP, current, 1); + } +} + +/* + * Note that 'init' is a special process: it doesn't get signals it doesn't + * want to handle. Thus you cannot kill init even with a SIGKILL even by + * mistake. + */ +static void do_signal(struct pt_regs *regs) +{ + siginfo_t info; + struct k_sigaction ka; + int signr; + + current->thread.esp0 = (unsigned long) regs; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); + if (signr > 0) { + /* Whee! Actually deliver the signal. */ + handle_signal(signr, &ka, &info, regs); + return; + } + + /* Did we come from a system call? */ + if (regs->orig_d0 >= 0) + /* Restart the system call - no handlers present */ + handle_restart(regs, NULL, 0); + + /* If there's no signal to deliver, we just restore the saved mask. */ + restore_saved_sigmask(); +} + +void do_notify_resume(struct pt_regs *regs) +{ + if (test_thread_flag(TIF_SIGPENDING)) + do_signal(regs); + + if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) + tracehook_notify_resume(regs); +} diff --git a/arch/m68k/kernel/signal_mm.c b/arch/m68k/kernel/signal_mm.c deleted file mode 100644 index cb856f9da65..00000000000 --- a/arch/m68k/kernel/signal_mm.c +++ /dev/null @@ -1,1115 +0,0 @@ -/* - * linux/arch/m68k/kernel/signal.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/* - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab - * - * mathemu support by Roman Zippel - * (Note: fpstate in the signal context is completely ignored for the emulator - * and the internal floating point format is put on stack) - */ - -/* - * ++roman (07/09/96): implemented signal stacks (specially for tosemu on - * Atari :-) Current limitation: Only one sigstack can be active at one time. - * If a second signal with SA_ONSTACK set arrives while working on a sigstack, - * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested - * signal handlers! - */ - -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/syscalls.h> -#include <linux/errno.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/unistd.h> -#include <linux/stddef.h> -#include <linux/highuid.h> -#include <linux/personality.h> -#include <linux/tty.h> -#include <linux/binfmts.h> -#include <linux/module.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/traps.h> -#include <asm/ucontext.h> - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -static const int frame_extra_sizes[16] = { - [1] = -1, /* sizeof(((struct frame *)0)->un.fmt1), */ - [2] = sizeof(((struct frame *)0)->un.fmt2), - [3] = sizeof(((struct frame *)0)->un.fmt3), -#ifdef CONFIG_COLDFIRE - [4] = 0, -#else - [4] = sizeof(((struct frame *)0)->un.fmt4), -#endif - [5] = -1, /* sizeof(((struct frame *)0)->un.fmt5), */ - [6] = -1, /* sizeof(((struct frame *)0)->un.fmt6), */ - [7] = sizeof(((struct frame *)0)->un.fmt7), - [8] = -1, /* sizeof(((struct frame *)0)->un.fmt8), */ - [9] = sizeof(((struct frame *)0)->un.fmt9), - [10] = sizeof(((struct frame *)0)->un.fmta), - [11] = sizeof(((struct frame *)0)->un.fmtb), - [12] = -1, /* sizeof(((struct frame *)0)->un.fmtc), */ - [13] = -1, /* sizeof(((struct frame *)0)->un.fmtd), */ - [14] = -1, /* sizeof(((struct frame *)0)->un.fmte), */ - [15] = -1, /* sizeof(((struct frame *)0)->un.fmtf), */ -}; - -int handle_kernel_fault(struct pt_regs *regs) -{ - const struct exception_table_entry *fixup; - struct pt_regs *tregs; - - /* Are we prepared to handle this kernel fault? */ - fixup = search_exception_tables(regs->pc); - if (!fixup) - return 0; - - /* Create a new four word stack frame, discarding the old one. */ - regs->stkadj = frame_extra_sizes[regs->format]; - tregs = (struct pt_regs *)((long)regs + regs->stkadj); - tregs->vector = regs->vector; -#ifdef CONFIG_COLDFIRE - tregs->format = 4; -#else - tregs->format = 0; -#endif - tregs->pc = fixup->fixup; - tregs->sr = regs->sr; - - return 1; -} - -/* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) -{ - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_restore_sigmask(); - - return -ERESTARTNOHAND; -} - -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - return do_sigaltstack(uss, uoss, rdusp()); -} - - -/* - * Do a signal return; undo the signal stack. - * - * Keep the return code on the stack quadword aligned! - * That makes the cache flush below easier. - */ - -struct sigframe -{ - char __user *pretcode; - int sig; - int code; - struct sigcontext __user *psc; - char retcode[8]; - unsigned long extramask[_NSIG_WORDS-1]; - struct sigcontext sc; -}; - -struct rt_sigframe -{ - char __user *pretcode; - int sig; - struct siginfo __user *pinfo; - void __user *puc; - char retcode[8]; - struct siginfo info; - struct ucontext uc; -}; - - -static unsigned char fpu_version; /* version number of fpu, set by setup_frame */ - -static inline int restore_fpu_state(struct sigcontext *sc) -{ - int err = 1; - - if (FPU_IS_EMU) { - /* restore registers */ - memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); - memcpy(current->thread.fp, sc->sc_fpregs, 24); - return 0; - } - - if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { - /* Verify the frame format. */ - if (!(CPU_IS_060 || CPU_IS_COLDFIRE) && - (sc->sc_fpstate[0] != fpu_version)) - goto out; - if (CPU_IS_020_OR_030) { - if (m68k_fputype & FPU_68881 && - !(sc->sc_fpstate[1] == 0x18 || sc->sc_fpstate[1] == 0xb4)) - goto out; - if (m68k_fputype & FPU_68882 && - !(sc->sc_fpstate[1] == 0x38 || sc->sc_fpstate[1] == 0xd4)) - goto out; - } else if (CPU_IS_040) { - if (!(sc->sc_fpstate[1] == 0x00 || - sc->sc_fpstate[1] == 0x28 || - sc->sc_fpstate[1] == 0x60)) - goto out; - } else if (CPU_IS_060) { - if (!(sc->sc_fpstate[3] == 0x00 || - sc->sc_fpstate[3] == 0x60 || - sc->sc_fpstate[3] == 0xe0)) - goto out; - } else if (CPU_IS_COLDFIRE) { - if (!(sc->sc_fpstate[0] == 0x00 || - sc->sc_fpstate[0] == 0x05 || - sc->sc_fpstate[0] == 0xe5)) - goto out; - } else - goto out; - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fmovemd %0,%%fp0-%%fp1\n\t" - "fmovel %1,%%fpcr\n\t" - "fmovel %2,%%fpsr\n\t" - "fmovel %3,%%fpiar" - : /* no outputs */ - : "m" (sc->sc_fpregs[0]), - "m" (sc->sc_fpcntl[0]), - "m" (sc->sc_fpcntl[1]), - "m" (sc->sc_fpcntl[2])); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp1\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*sc->sc_fpregs), - "m" (*sc->sc_fpcntl)); - } - } - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("frestore %0" : : "m" (*sc->sc_fpstate)); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" - : : "m" (*sc->sc_fpstate)); - } - err = 0; - -out: - return err; -} - -#define FPCONTEXT_SIZE 216 -#define uc_fpstate uc_filler[0] -#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] -#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] - -static inline int rt_restore_fpu_state(struct ucontext __user *uc) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0); - fpregset_t fpregs; - int err = 1; - - if (FPU_IS_EMU) { - /* restore fpu control register */ - if (__copy_from_user(current->thread.fpcntl, - uc->uc_mcontext.fpregs.f_fpcntl, 12)) - goto out; - /* restore all other fpu register */ - if (__copy_from_user(current->thread.fp, - uc->uc_mcontext.fpregs.f_fpregs, 96)) - goto out; - return 0; - } - - if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) - goto out; - if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { - if (!(CPU_IS_060 || CPU_IS_COLDFIRE)) - context_size = fpstate[1]; - /* Verify the frame format. */ - if (!(CPU_IS_060 || CPU_IS_COLDFIRE) && - (fpstate[0] != fpu_version)) - goto out; - if (CPU_IS_020_OR_030) { - if (m68k_fputype & FPU_68881 && - !(context_size == 0x18 || context_size == 0xb4)) - goto out; - if (m68k_fputype & FPU_68882 && - !(context_size == 0x38 || context_size == 0xd4)) - goto out; - } else if (CPU_IS_040) { - if (!(context_size == 0x00 || - context_size == 0x28 || - context_size == 0x60)) - goto out; - } else if (CPU_IS_060) { - if (!(fpstate[3] == 0x00 || - fpstate[3] == 0x60 || - fpstate[3] == 0xe0)) - goto out; - } else if (CPU_IS_COLDFIRE) { - if (!(fpstate[3] == 0x00 || - fpstate[3] == 0x05 || - fpstate[3] == 0xe5)) - goto out; - } else - goto out; - if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, - sizeof(fpregs))) - goto out; - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fmovemd %0,%%fp0-%%fp7\n\t" - "fmovel %1,%%fpcr\n\t" - "fmovel %2,%%fpsr\n\t" - "fmovel %3,%%fpiar" - : /* no outputs */ - : "m" (fpregs.f_fpregs[0]), - "m" (fpregs.f_fpcntl[0]), - "m" (fpregs.f_fpcntl[1]), - "m" (fpregs.f_fpcntl[2])); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp7\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*fpregs.f_fpregs), - "m" (*fpregs.f_fpcntl)); - } - } - if (context_size && - __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, - context_size)) - goto out; - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("frestore %0" : : "m" (*fpstate)); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" - : : "m" (*fpstate)); - } - err = 0; - -out: - return err; -} - -static int mangle_kernel_stack(struct pt_regs *regs, int formatvec, - void __user *fp) -{ - int fsize = frame_extra_sizes[formatvec >> 12]; - if (fsize < 0) { - /* - * user process trying to return with weird frame format - */ -#ifdef DEBUG - printk("user process returning with weird frame format\n"); -#endif - return 1; - } - if (!fsize) { - regs->format = formatvec >> 12; - regs->vector = formatvec & 0xfff; - } else { - struct switch_stack *sw = (struct switch_stack *)regs - 1; - unsigned long buf[fsize / 2]; /* yes, twice as much */ - - /* that'll make sure that expansion won't crap over data */ - if (copy_from_user(buf + fsize / 4, fp, fsize)) - return 1; - - /* point of no return */ - regs->format = formatvec >> 12; - regs->vector = formatvec & 0xfff; -#define frame_offset (sizeof(struct pt_regs)+sizeof(struct switch_stack)) - __asm__ __volatile__ ( -#ifdef CONFIG_COLDFIRE - " movel %0,%/sp\n\t" - " bra ret_from_signal\n" -#else - " movel %0,%/a0\n\t" - " subl %1,%/a0\n\t" /* make room on stack */ - " movel %/a0,%/sp\n\t" /* set stack pointer */ - /* move switch_stack and pt_regs */ - "1: movel %0@+,%/a0@+\n\t" - " dbra %2,1b\n\t" - " lea %/sp@(%c3),%/a0\n\t" /* add offset of fmt */ - " lsrl #2,%1\n\t" - " subql #1,%1\n\t" - /* copy to the gap we'd made */ - "2: movel %4@+,%/a0@+\n\t" - " dbra %1,2b\n\t" - " bral ret_from_signal\n" -#endif - : /* no outputs, it doesn't ever return */ - : "a" (sw), "d" (fsize), "d" (frame_offset/4-1), - "n" (frame_offset), "a" (buf + fsize/4) - : "a0"); -#undef frame_offset - } - return 0; -} - -static inline int -restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp) -{ - int formatvec; - struct sigcontext context; - int err; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - /* get previous context */ - if (copy_from_user(&context, usc, sizeof(context))) - goto badframe; - - /* restore passed registers */ - regs->d0 = context.sc_d0; - regs->d1 = context.sc_d1; - regs->a0 = context.sc_a0; - regs->a1 = context.sc_a1; - regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); - regs->pc = context.sc_pc; - regs->orig_d0 = -1; /* disable syscall checks */ - wrusp(context.sc_usp); - formatvec = context.sc_formatvec; - - err = restore_fpu_state(&context); - - if (err || mangle_kernel_stack(regs, formatvec, fp)) - goto badframe; - - return 0; - -badframe: - return 1; -} - -static inline int -rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, - struct ucontext __user *uc) -{ - int temp; - greg_t __user *gregs = uc->uc_mcontext.gregs; - unsigned long usp; - int err; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - err = __get_user(temp, &uc->uc_mcontext.version); - if (temp != MCONTEXT_VERSION) - goto badframe; - /* restore passed registers */ - err |= __get_user(regs->d0, &gregs[0]); - err |= __get_user(regs->d1, &gregs[1]); - err |= __get_user(regs->d2, &gregs[2]); - err |= __get_user(regs->d3, &gregs[3]); - err |= __get_user(regs->d4, &gregs[4]); - err |= __get_user(regs->d5, &gregs[5]); - err |= __get_user(sw->d6, &gregs[6]); - err |= __get_user(sw->d7, &gregs[7]); - err |= __get_user(regs->a0, &gregs[8]); - err |= __get_user(regs->a1, &gregs[9]); - err |= __get_user(regs->a2, &gregs[10]); - err |= __get_user(sw->a3, &gregs[11]); - err |= __get_user(sw->a4, &gregs[12]); - err |= __get_user(sw->a5, &gregs[13]); - err |= __get_user(sw->a6, &gregs[14]); - err |= __get_user(usp, &gregs[15]); - wrusp(usp); - err |= __get_user(regs->pc, &gregs[16]); - err |= __get_user(temp, &gregs[17]); - regs->sr = (regs->sr & 0xff00) | (temp & 0xff); - regs->orig_d0 = -1; /* disable syscall checks */ - err |= __get_user(temp, &uc->uc_formatvec); - - err |= rt_restore_fpu_state(uc); - - if (err || do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) - goto badframe; - - if (mangle_kernel_stack(regs, temp, &uc->uc_extra)) - goto badframe; - - return 0; - -badframe: - return 1; -} - -asmlinkage int do_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); - sigset_t set; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.sc_mask) || - (_NSIG_WORDS > 1 && - __copy_from_user(&set.sig[1], &frame->extramask, - sizeof(frame->extramask)))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - current->blocked = set; - recalc_sigpending(); - - if (restore_sigcontext(regs, &frame->sc, frame + 1)) - goto badframe; - return regs->d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -asmlinkage int do_rt_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); - sigset_t set; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - current->blocked = set; - recalc_sigpending(); - - if (rt_restore_ucontext(regs, sw, &frame->uc)) - goto badframe; - return regs->d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -/* - * Set up a signal frame. - */ - -static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) -{ - if (FPU_IS_EMU) { - /* save registers */ - memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); - memcpy(sc->sc_fpregs, current->thread.fp, 24); - return; - } - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fsave %0" - : : "m" (*sc->sc_fpstate) : "memory"); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*sc->sc_fpstate) : "memory"); - } - - if (CPU_IS_060 ? sc->sc_fpstate[2] : sc->sc_fpstate[0]) { - fpu_version = sc->sc_fpstate[0]; - if (CPU_IS_020_OR_030 && - regs->vector >= (VEC_FPBRUC * 4) && - regs->vector <= (VEC_FPNAN * 4)) { - /* Clear pending exception in 68882 idle frame */ - if (*(unsigned short *) sc->sc_fpstate == 0x1f38) - sc->sc_fpstate[0x38] |= 1 << 3; - } - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fmovemd %%fp0-%%fp1,%0\n\t" - "fmovel %%fpcr,%1\n\t" - "fmovel %%fpsr,%2\n\t" - "fmovel %%fpiar,%3" - : "=m" (sc->sc_fpregs[0]), - "=m" (sc->sc_fpcntl[0]), - "=m" (sc->sc_fpcntl[1]), - "=m" (sc->sc_fpcntl[2]) - : /* no inputs */ - : "memory"); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp1,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*sc->sc_fpregs), - "=m" (*sc->sc_fpcntl) - : /* no inputs */ - : "memory"); - } - } -} - -static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = CPU_IS_060 ? 8 : (CPU_IS_COLDFIRE ? 12 : 0); - int err = 0; - - if (FPU_IS_EMU) { - /* save fpu control register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpcntl, - current->thread.fpcntl, 12); - /* save all other fpu register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, - current->thread.fp, 96); - return err; - } - - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fsave %0" : : "m" (*fpstate) : "memory"); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*fpstate) : "memory"); - } - - err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); - if (CPU_IS_060 ? fpstate[2] : fpstate[0]) { - fpregset_t fpregs; - if (!(CPU_IS_060 || CPU_IS_COLDFIRE)) - context_size = fpstate[1]; - fpu_version = fpstate[0]; - if (CPU_IS_020_OR_030 && - regs->vector >= (VEC_FPBRUC * 4) && - regs->vector <= (VEC_FPNAN * 4)) { - /* Clear pending exception in 68882 idle frame */ - if (*(unsigned short *) fpstate == 0x1f38) - fpstate[0x38] |= 1 << 3; - } - if (CPU_IS_COLDFIRE) { - __asm__ volatile ("fmovemd %%fp0-%%fp7,%0\n\t" - "fmovel %%fpcr,%1\n\t" - "fmovel %%fpsr,%2\n\t" - "fmovel %%fpiar,%3" - : "=m" (fpregs.f_fpregs[0]), - "=m" (fpregs.f_fpcntl[0]), - "=m" (fpregs.f_fpcntl[1]), - "=m" (fpregs.f_fpcntl[2]) - : /* no inputs */ - : "memory"); - } else { - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp7,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*fpregs.f_fpregs), - "=m" (*fpregs.f_fpcntl) - : /* no inputs */ - : "memory"); - } - err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, - sizeof(fpregs)); - } - if (context_size) - err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, - context_size); - return err; -} - -static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, - unsigned long mask) -{ - sc->sc_mask = mask; - sc->sc_usp = rdusp(); - sc->sc_d0 = regs->d0; - sc->sc_d1 = regs->d1; - sc->sc_a0 = regs->a0; - sc->sc_a1 = regs->a1; - sc->sc_sr = regs->sr; - sc->sc_pc = regs->pc; - sc->sc_formatvec = regs->format << 12 | regs->vector; - save_fpu_state(sc, regs); -} - -static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) -{ - struct switch_stack *sw = (struct switch_stack *)regs - 1; - greg_t __user *gregs = uc->uc_mcontext.gregs; - int err = 0; - - err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); - err |= __put_user(regs->d0, &gregs[0]); - err |= __put_user(regs->d1, &gregs[1]); - err |= __put_user(regs->d2, &gregs[2]); - err |= __put_user(regs->d3, &gregs[3]); - err |= __put_user(regs->d4, &gregs[4]); - err |= __put_user(regs->d5, &gregs[5]); - err |= __put_user(sw->d6, &gregs[6]); - err |= __put_user(sw->d7, &gregs[7]); - err |= __put_user(regs->a0, &gregs[8]); - err |= __put_user(regs->a1, &gregs[9]); - err |= __put_user(regs->a2, &gregs[10]); - err |= __put_user(sw->a3, &gregs[11]); - err |= __put_user(sw->a4, &gregs[12]); - err |= __put_user(sw->a5, &gregs[13]); - err |= __put_user(sw->a6, &gregs[14]); - err |= __put_user(rdusp(), &gregs[15]); - err |= __put_user(regs->pc, &gregs[16]); - err |= __put_user(regs->sr, &gregs[17]); - err |= __put_user((regs->format << 12) | regs->vector, &uc->uc_formatvec); - err |= rt_save_fpu_state(uc, regs); - return err; -} - -static inline void push_cache (unsigned long vaddr) -{ - /* - * Using the old cache_push_v() was really a big waste. - * - * What we are trying to do is to flush 8 bytes to ram. - * Flushing 2 cache lines of 16 bytes is much cheaper than - * flushing 1 or 2 pages, as previously done in - * cache_push_v(). - * Jes - */ - if (CPU_IS_040) { - unsigned long temp; - - __asm__ __volatile__ (".chip 68040\n\t" - "nop\n\t" - "ptestr (%1)\n\t" - "movec %%mmusr,%0\n\t" - ".chip 68k" - : "=r" (temp) - : "a" (vaddr)); - - temp &= PAGE_MASK; - temp |= vaddr & ~PAGE_MASK; - - __asm__ __volatile__ (".chip 68040\n\t" - "nop\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (temp)); - } - else if (CPU_IS_060) { - unsigned long temp; - __asm__ __volatile__ (".chip 68060\n\t" - "plpar (%0)\n\t" - ".chip 68k" - : "=a" (temp) - : "0" (vaddr)); - __asm__ __volatile__ (".chip 68060\n\t" - "cpushl %%bc,(%0)\n\t" - ".chip 68k" - : : "a" (temp)); - } else if (!CPU_IS_COLDFIRE) { - /* - * 68030/68020 have no writeback cache; - * still need to clear icache. - * Note that vaddr is guaranteed to be long word aligned. - */ - unsigned long temp; - asm volatile ("movec %%cacr,%0" : "=r" (temp)); - temp += 4; - asm volatile ("movec %0,%%caar\n\t" - "movec %1,%%cacr" - : : "r" (vaddr), "r" (temp)); - asm volatile ("movec %0,%%caar\n\t" - "movec %1,%%cacr" - : : "r" (vaddr + 4), "r" (temp)); - } -} - -static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) -{ - unsigned long usp; - - /* Default to using normal stack. */ - usp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!sas_ss_flags(usp)) - usp = current->sas_ss_sp + current->sas_ss_size; - } - return (void __user *)((usp - frame_size) & -8UL); -} - -static int setup_frame (int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) -{ - struct sigframe __user *frame; - int fsize = frame_extra_sizes[regs->format]; - struct sigcontext context; - int err = 0; - - if (fsize < 0) { -#ifdef DEBUG - printk ("setup_frame: Unknown frame format %#x\n", - regs->format); -#endif - goto give_sigsegv; - } - - frame = get_sigframe(ka, regs, sizeof(*frame) + fsize); - - if (fsize) - err |= copy_to_user (frame + 1, regs + 1, fsize); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - - err |= __put_user(regs->vector, &frame->code); - err |= __put_user(&frame->sc, &frame->psc); - - if (_NSIG_WORDS > 1) - err |= copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask)); - - setup_sigcontext(&context, regs, set->sig[0]); - err |= copy_to_user (&frame->sc, &context, sizeof(context)); - - /* Set up to return from userspace. */ - err |= __put_user(frame->retcode, &frame->pretcode); - /* moveq #,d0; trap #0 */ - err |= __put_user(0x70004e40 + (__NR_sigreturn << 16), - (long __user *)(frame->retcode)); - - if (err) - goto give_sigsegv; - - push_cache ((unsigned long) &frame->retcode); - - /* - * Set up registers for signal handler. All the state we are about - * to destroy is successfully copied to sigframe. - */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - - /* - * This is subtle; if we build more than one sigframe, all but the - * first one will see frame format 0 and have fsize == 0, so we won't - * screw stkadj. - */ - if (fsize) - regs->stkadj = fsize; - - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#ifdef DEBUG - printk("Performing stackadjust=%04x\n", regs->stkadj); -#endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; -} - -static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - int fsize = frame_extra_sizes[regs->format]; - int err = 0; - - if (fsize < 0) { -#ifdef DEBUG - printk ("setup_frame: Unknown frame format %#x\n", - regs->format); -#endif - goto give_sigsegv; - } - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - if (fsize) - err |= copy_to_user (&frame->uc.uc_extra, regs + 1, fsize); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - err |= __put_user(&frame->info, &frame->pinfo); - err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); - - /* Create the ucontext. */ - err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(NULL, &frame->uc.uc_link); - err |= __put_user((void __user *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(rdusp()), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= rt_setup_ucontext(&frame->uc, regs); - err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); - - /* Set up to return from userspace. */ - err |= __put_user(frame->retcode, &frame->pretcode); -#ifdef __mcoldfire__ - /* movel #__NR_rt_sigreturn,d0; trap #0 */ - err |= __put_user(0x203c0000, (long __user *)(frame->retcode + 0)); - err |= __put_user(0x00004e40 + (__NR_rt_sigreturn << 16), - (long __user *)(frame->retcode + 4)); -#else - /* moveq #,d0; notb d0; trap #0 */ - err |= __put_user(0x70004600 + ((__NR_rt_sigreturn ^ 0xff) << 16), - (long __user *)(frame->retcode + 0)); - err |= __put_user(0x4e40, (short __user *)(frame->retcode + 4)); -#endif - - if (err) - goto give_sigsegv; - - push_cache ((unsigned long) &frame->retcode); - - /* - * Set up registers for signal handler. All the state we are about - * to destroy is successfully copied to sigframe. - */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - - /* - * This is subtle; if we build more than one sigframe, all but the - * first one will see frame format 0 and have fsize == 0, so we won't - * screw stkadj. - */ - if (fsize) - regs->stkadj = fsize; - - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#ifdef DEBUG - printk("Performing stackadjust=%04x\n", regs->stkadj); -#endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return 0; - -give_sigsegv: - force_sigsegv(sig, current); - return err; -} - -static inline void -handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) -{ - switch (regs->d0) { - case -ERESTARTNOHAND: - if (!has_handler) - goto do_restart; - regs->d0 = -EINTR; - break; - - case -ERESTART_RESTARTBLOCK: - if (!has_handler) { - regs->d0 = __NR_restart_syscall; - regs->pc -= 2; - break; - } - regs->d0 = -EINTR; - break; - - case -ERESTARTSYS: - if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { - regs->d0 = -EINTR; - break; - } - /* fallthrough */ - case -ERESTARTNOINTR: - do_restart: - regs->d0 = regs->orig_d0; - regs->pc -= 2; - break; - } -} - -void ptrace_signal_deliver(struct pt_regs *regs, void *cookie) -{ - if (regs->orig_d0 < 0) - return; - switch (regs->d0) { - case -ERESTARTNOHAND: - case -ERESTARTSYS: - case -ERESTARTNOINTR: - regs->d0 = regs->orig_d0; - regs->orig_d0 = -1; - regs->pc -= 2; - break; - } -} - -/* - * OK, we're invoking a handler - */ -static void -handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) -{ - int err; - /* are we from a system call? */ - if (regs->orig_d0 >= 0) - /* If so, check system call restarting.. */ - handle_restart(regs, ka, 1); - - /* set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - err = setup_rt_frame(sig, ka, info, oldset, regs); - else - err = setup_frame(sig, ka, oldset, regs); - - if (err) - return; - - sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked,sig); - recalc_sigpending(); - - if (test_thread_flag(TIF_DELAYED_TRACE)) { - regs->sr &= ~0x8000; - send_sig(SIGTRAP, current, 1); - } - - clear_thread_flag(TIF_RESTORE_SIGMASK); -} - -/* - * Note that 'init' is a special process: it doesn't get signals it doesn't - * want to handle. Thus you cannot kill init even with a SIGKILL even by - * mistake. - */ -asmlinkage void do_signal(struct pt_regs *regs) -{ - siginfo_t info; - struct k_sigaction ka; - int signr; - sigset_t *oldset; - - current->thread.esp0 = (unsigned long) regs; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, oldset, regs); - return; - } - - /* Did we come from a system call? */ - if (regs->orig_d0 >= 0) - /* Restart the system call - no handlers present */ - handle_restart(regs, NULL, 0); - - /* If there's no signal to deliver, we just restore the saved mask. */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } -} diff --git a/arch/m68k/kernel/signal_no.c b/arch/m68k/kernel/signal_no.c deleted file mode 100644 index 36a81bb6835..00000000000 --- a/arch/m68k/kernel/signal_no.c +++ /dev/null @@ -1,765 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/signal.c - * - * Copyright (C) 1991, 1992 Linus Torvalds - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/* - * Linux/m68k support by Hamish Macdonald - * - * 68060 fixes by Jesper Skov - * - * 1997-12-01 Modified for POSIX.1b signals by Andreas Schwab - * - * mathemu support by Roman Zippel - * (Note: fpstate in the signal context is completely ignored for the emulator - * and the internal floating point format is put on stack) - */ - -/* - * ++roman (07/09/96): implemented signal stacks (specially for tosemu on - * Atari :-) Current limitation: Only one sigstack can be active at one time. - * If a second signal with SA_ONSTACK set arrives while working on a sigstack, - * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested - * signal handlers! - */ - -#include <linux/sched.h> -#include <linux/mm.h> -#include <linux/kernel.h> -#include <linux/signal.h> -#include <linux/syscalls.h> -#include <linux/errno.h> -#include <linux/wait.h> -#include <linux/ptrace.h> -#include <linux/unistd.h> -#include <linux/stddef.h> -#include <linux/highuid.h> -#include <linux/tty.h> -#include <linux/personality.h> -#include <linux/binfmts.h> - -#include <asm/setup.h> -#include <asm/uaccess.h> -#include <asm/pgtable.h> -#include <asm/traps.h> -#include <asm/ucontext.h> - -#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) - -void ret_from_user_signal(void); -void ret_from_user_rt_signal(void); - -/* - * Atomically swap in the new signal mask, and wait for a signal. - */ -asmlinkage int -sys_sigsuspend(int unused0, int unused1, old_sigset_t mask) -{ - mask &= _BLOCKABLE; - spin_lock_irq(¤t->sighand->siglock); - current->saved_sigmask = current->blocked; - siginitset(¤t->blocked, mask); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - current->state = TASK_INTERRUPTIBLE; - schedule(); - set_restore_sigmask(); - - return -ERESTARTNOHAND; -} - -asmlinkage int -sys_sigaction(int sig, const struct old_sigaction __user *act, - struct old_sigaction __user *oact) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - if (act) { - old_sigset_t mask; - if (!access_ok(VERIFY_READ, act, sizeof(*act)) || - __get_user(new_ka.sa.sa_handler, &act->sa_handler) || - __get_user(new_ka.sa.sa_restorer, &act->sa_restorer) || - __get_user(new_ka.sa.sa_flags, &act->sa_flags) || - __get_user(mask, &act->sa_mask)) - return -EFAULT; - siginitset(&new_ka.sa.sa_mask, mask); - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || - __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || - __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer) || - __put_user(old_ka.sa.sa_flags, &oact->sa_flags) || - __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask)) - return -EFAULT; - } - - return ret; -} - -asmlinkage int -sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - return do_sigaltstack(uss, uoss, rdusp()); -} - - -/* - * Do a signal return; undo the signal stack. - * - * Keep the return code on the stack quadword aligned! - * That makes the cache flush below easier. - */ - -struct sigframe -{ - char __user *pretcode; - int sig; - int code; - struct sigcontext __user *psc; - char retcode[8]; - unsigned long extramask[_NSIG_WORDS-1]; - struct sigcontext sc; -}; - -struct rt_sigframe -{ - char __user *pretcode; - int sig; - struct siginfo __user *pinfo; - void __user *puc; - char retcode[8]; - struct siginfo info; - struct ucontext uc; -}; - -#ifdef CONFIG_FPU - -static unsigned char fpu_version = 0; /* version number of fpu, set by setup_frame */ - -static inline int restore_fpu_state(struct sigcontext *sc) -{ - int err = 1; - - if (FPU_IS_EMU) { - /* restore registers */ - memcpy(current->thread.fpcntl, sc->sc_fpcntl, 12); - memcpy(current->thread.fp, sc->sc_fpregs, 24); - return 0; - } - - if (sc->sc_fpstate[0]) { - /* Verify the frame format. */ - if (sc->sc_fpstate[0] != fpu_version) - goto out; - - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp1\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*sc->sc_fpregs), "m" (*sc->sc_fpcntl)); - } - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" : : "m" (*sc->sc_fpstate)); - err = 0; - -out: - return err; -} - -#define FPCONTEXT_SIZE 216 -#define uc_fpstate uc_filler[0] -#define uc_formatvec uc_filler[FPCONTEXT_SIZE/4] -#define uc_extra uc_filler[FPCONTEXT_SIZE/4+1] - -static inline int rt_restore_fpu_state(struct ucontext __user *uc) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = 0; - fpregset_t fpregs; - int err = 1; - - if (FPU_IS_EMU) { - /* restore fpu control register */ - if (__copy_from_user(current->thread.fpcntl, - uc->uc_mcontext.fpregs.f_fpcntl, 12)) - goto out; - /* restore all other fpu register */ - if (__copy_from_user(current->thread.fp, - uc->uc_mcontext.fpregs.f_fpregs, 96)) - goto out; - return 0; - } - - if (__get_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate)) - goto out; - if (fpstate[0]) { - context_size = fpstate[1]; - - /* Verify the frame format. */ - if (fpstate[0] != fpu_version) - goto out; - if (__copy_from_user(&fpregs, &uc->uc_mcontext.fpregs, - sizeof(fpregs))) - goto out; - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %0,%%fp0-%%fp7\n\t" - "fmoveml %1,%%fpcr/%%fpsr/%%fpiar\n\t" - ".chip 68k" - : /* no outputs */ - : "m" (*fpregs.f_fpregs), - "m" (*fpregs.f_fpcntl)); - } - if (context_size && - __copy_from_user(fpstate + 4, (long __user *)&uc->uc_fpstate + 1, - context_size)) - goto out; - __asm__ volatile (".chip 68k/68881\n\t" - "frestore %0\n\t" - ".chip 68k" : : "m" (*fpstate)); - err = 0; - -out: - return err; -} - -#endif - -static inline int -restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *usc, void __user *fp, - int *pd0) -{ - int formatvec; - struct sigcontext context; - int err = 0; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - /* get previous context */ - if (copy_from_user(&context, usc, sizeof(context))) - goto badframe; - - /* restore passed registers */ - regs->d1 = context.sc_d1; - regs->a0 = context.sc_a0; - regs->a1 = context.sc_a1; - ((struct switch_stack *)regs - 1)->a5 = context.sc_a5; - regs->sr = (regs->sr & 0xff00) | (context.sc_sr & 0xff); - regs->pc = context.sc_pc; - regs->orig_d0 = -1; /* disable syscall checks */ - wrusp(context.sc_usp); - formatvec = context.sc_formatvec; - regs->format = formatvec >> 12; - regs->vector = formatvec & 0xfff; - -#ifdef CONFIG_FPU - err = restore_fpu_state(&context); -#endif - - *pd0 = context.sc_d0; - return err; - -badframe: - return 1; -} - -static inline int -rt_restore_ucontext(struct pt_regs *regs, struct switch_stack *sw, - struct ucontext __user *uc, int *pd0) -{ - int temp; - greg_t __user *gregs = uc->uc_mcontext.gregs; - unsigned long usp; - int err; - - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - - err = __get_user(temp, &uc->uc_mcontext.version); - if (temp != MCONTEXT_VERSION) - goto badframe; - /* restore passed registers */ - err |= __get_user(regs->d0, &gregs[0]); - err |= __get_user(regs->d1, &gregs[1]); - err |= __get_user(regs->d2, &gregs[2]); - err |= __get_user(regs->d3, &gregs[3]); - err |= __get_user(regs->d4, &gregs[4]); - err |= __get_user(regs->d5, &gregs[5]); - err |= __get_user(sw->d6, &gregs[6]); - err |= __get_user(sw->d7, &gregs[7]); - err |= __get_user(regs->a0, &gregs[8]); - err |= __get_user(regs->a1, &gregs[9]); - err |= __get_user(regs->a2, &gregs[10]); - err |= __get_user(sw->a3, &gregs[11]); - err |= __get_user(sw->a4, &gregs[12]); - err |= __get_user(sw->a5, &gregs[13]); - err |= __get_user(sw->a6, &gregs[14]); - err |= __get_user(usp, &gregs[15]); - wrusp(usp); - err |= __get_user(regs->pc, &gregs[16]); - err |= __get_user(temp, &gregs[17]); - regs->sr = (regs->sr & 0xff00) | (temp & 0xff); - regs->orig_d0 = -1; /* disable syscall checks */ - regs->format = temp >> 12; - regs->vector = temp & 0xfff; - - if (do_sigaltstack(&uc->uc_stack, NULL, usp) == -EFAULT) - goto badframe; - - *pd0 = regs->d0; - return err; - -badframe: - return 1; -} - -asmlinkage int do_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct sigframe __user *frame = (struct sigframe __user *)(usp - 4); - sigset_t set; - int d0; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__get_user(set.sig[0], &frame->sc.sc_mask) || - (_NSIG_WORDS > 1 && - __copy_from_user(&set.sig[1], &frame->extramask, - sizeof(frame->extramask)))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (restore_sigcontext(regs, &frame->sc, frame + 1, &d0)) - goto badframe; - return d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -asmlinkage int do_rt_sigreturn(unsigned long __unused) -{ - struct switch_stack *sw = (struct switch_stack *) &__unused; - struct pt_regs *regs = (struct pt_regs *) (sw + 1); - unsigned long usp = rdusp(); - struct rt_sigframe __user *frame = (struct rt_sigframe __user *)(usp - 4); - sigset_t set; - int d0; - - if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) - goto badframe; - if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) - goto badframe; - - sigdelsetmask(&set, ~_BLOCKABLE); - spin_lock_irq(¤t->sighand->siglock); - current->blocked = set; - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - if (rt_restore_ucontext(regs, sw, &frame->uc, &d0)) - goto badframe; - return d0; - -badframe: - force_sig(SIGSEGV, current); - return 0; -} - -#ifdef CONFIG_FPU -/* - * Set up a signal frame. - */ - -static inline void save_fpu_state(struct sigcontext *sc, struct pt_regs *regs) -{ - if (FPU_IS_EMU) { - /* save registers */ - memcpy(sc->sc_fpcntl, current->thread.fpcntl, 12); - memcpy(sc->sc_fpregs, current->thread.fp, 24); - return; - } - - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*sc->sc_fpstate) : "memory"); - - if (sc->sc_fpstate[0]) { - fpu_version = sc->sc_fpstate[0]; - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp1,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*sc->sc_fpregs), - "=m" (*sc->sc_fpcntl) - : /* no inputs */ - : "memory"); - } -} - -static inline int rt_save_fpu_state(struct ucontext __user *uc, struct pt_regs *regs) -{ - unsigned char fpstate[FPCONTEXT_SIZE]; - int context_size = 0; - int err = 0; - - if (FPU_IS_EMU) { - /* save fpu control register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_pcntl, - current->thread.fpcntl, 12); - /* save all other fpu register */ - err |= copy_to_user(uc->uc_mcontext.fpregs.f_fpregs, - current->thread.fp, 96); - return err; - } - - __asm__ volatile (".chip 68k/68881\n\t" - "fsave %0\n\t" - ".chip 68k" - : : "m" (*fpstate) : "memory"); - - err |= __put_user(*(long *)fpstate, (long __user *)&uc->uc_fpstate); - if (fpstate[0]) { - fpregset_t fpregs; - context_size = fpstate[1]; - fpu_version = fpstate[0]; - __asm__ volatile (".chip 68k/68881\n\t" - "fmovemx %%fp0-%%fp7,%0\n\t" - "fmoveml %%fpcr/%%fpsr/%%fpiar,%1\n\t" - ".chip 68k" - : "=m" (*fpregs.f_fpregs), - "=m" (*fpregs.f_fpcntl) - : /* no inputs */ - : "memory"); - err |= copy_to_user(&uc->uc_mcontext.fpregs, &fpregs, - sizeof(fpregs)); - } - if (context_size) - err |= copy_to_user((long __user *)&uc->uc_fpstate + 1, fpstate + 4, - context_size); - return err; -} - -#endif - -static void setup_sigcontext(struct sigcontext *sc, struct pt_regs *regs, - unsigned long mask) -{ - sc->sc_mask = mask; - sc->sc_usp = rdusp(); - sc->sc_d0 = regs->d0; - sc->sc_d1 = regs->d1; - sc->sc_a0 = regs->a0; - sc->sc_a1 = regs->a1; - sc->sc_a5 = ((struct switch_stack *)regs - 1)->a5; - sc->sc_sr = regs->sr; - sc->sc_pc = regs->pc; - sc->sc_formatvec = regs->format << 12 | regs->vector; -#ifdef CONFIG_FPU - save_fpu_state(sc, regs); -#endif -} - -static inline int rt_setup_ucontext(struct ucontext __user *uc, struct pt_regs *regs) -{ - struct switch_stack *sw = (struct switch_stack *)regs - 1; - greg_t __user *gregs = uc->uc_mcontext.gregs; - int err = 0; - - err |= __put_user(MCONTEXT_VERSION, &uc->uc_mcontext.version); - err |= __put_user(regs->d0, &gregs[0]); - err |= __put_user(regs->d1, &gregs[1]); - err |= __put_user(regs->d2, &gregs[2]); - err |= __put_user(regs->d3, &gregs[3]); - err |= __put_user(regs->d4, &gregs[4]); - err |= __put_user(regs->d5, &gregs[5]); - err |= __put_user(sw->d6, &gregs[6]); - err |= __put_user(sw->d7, &gregs[7]); - err |= __put_user(regs->a0, &gregs[8]); - err |= __put_user(regs->a1, &gregs[9]); - err |= __put_user(regs->a2, &gregs[10]); - err |= __put_user(sw->a3, &gregs[11]); - err |= __put_user(sw->a4, &gregs[12]); - err |= __put_user(sw->a5, &gregs[13]); - err |= __put_user(sw->a6, &gregs[14]); - err |= __put_user(rdusp(), &gregs[15]); - err |= __put_user(regs->pc, &gregs[16]); - err |= __put_user(regs->sr, &gregs[17]); -#ifdef CONFIG_FPU - err |= rt_save_fpu_state(uc, regs); -#endif - return err; -} - -static inline void __user * -get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) -{ - unsigned long usp; - - /* Default to using normal stack. */ - usp = rdusp(); - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa.sa_flags & SA_ONSTACK) { - if (!sas_ss_flags(usp)) - usp = current->sas_ss_sp + current->sas_ss_size; - } - return (void __user *)((usp - frame_size) & -8UL); -} - -static int setup_frame (int sig, struct k_sigaction *ka, - sigset_t *set, struct pt_regs *regs) -{ - struct sigframe __user *frame; - struct sigcontext context; - int err = 0; - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - - err |= __put_user(regs->vector, &frame->code); - err |= __put_user(&frame->sc, &frame->psc); - - if (_NSIG_WORDS > 1) - err |= copy_to_user(frame->extramask, &set->sig[1], - sizeof(frame->extramask)); - - setup_sigcontext(&context, regs, set->sig[0]); - err |= copy_to_user (&frame->sc, &context, sizeof(context)); - - /* Set up to return from userspace. */ - err |= __put_user((void *) ret_from_user_signal, &frame->pretcode); - - if (err) - goto give_sigsegv; - - /* Set up registers for signal handler */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - ((struct switch_stack *)regs - 1)->a5 = current->mm->start_data; - regs->format = 0x4; /*set format byte to make stack appear modulo 4 - which it will be when doing the rte */ - -adjust_stack: - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#if defined(DEBUG) - printk(KERN_DEBUG "Performing stackadjust=%04x\n", regs->stkadj); -#endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return err; - -give_sigsegv: - force_sigsegv(sig, current); - goto adjust_stack; -} - -static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *set, struct pt_regs *regs) -{ - struct rt_sigframe __user *frame; - int err = 0; - - frame = get_sigframe(ka, regs, sizeof(*frame)); - - err |= __put_user((current_thread_info()->exec_domain - && current_thread_info()->exec_domain->signal_invmap - && sig < 32 - ? current_thread_info()->exec_domain->signal_invmap[sig] - : sig), - &frame->sig); - err |= __put_user(&frame->info, &frame->pinfo); - err |= __put_user(&frame->uc, &frame->puc); - err |= copy_siginfo_to_user(&frame->info, info); - - /* Create the ucontext. */ - err |= __put_user(0, &frame->uc.uc_flags); - err |= __put_user(NULL, &frame->uc.uc_link); - err |= __put_user((void __user *)current->sas_ss_sp, - &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(rdusp()), - &frame->uc.uc_stack.ss_flags); - err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); - err |= rt_setup_ucontext(&frame->uc, regs); - err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); - - /* Set up to return from userspace. */ - err |= __put_user((void *) ret_from_user_rt_signal, &frame->pretcode); - - if (err) - goto give_sigsegv; - - /* Set up registers for signal handler */ - wrusp ((unsigned long) frame); - regs->pc = (unsigned long) ka->sa.sa_handler; - ((struct switch_stack *)regs - 1)->a5 = current->mm->start_data; - regs->format = 0x4; /*set format byte to make stack appear modulo 4 - which it will be when doing the rte */ - -adjust_stack: - /* Prepare to skip over the extra stuff in the exception frame. */ - if (regs->stkadj) { - struct pt_regs *tregs = - (struct pt_regs *)((ulong)regs + regs->stkadj); -#if defined(DEBUG) - printk(KERN_DEBUG "Performing stackadjust=%04x\n", regs->stkadj); -#endif - /* This must be copied with decreasing addresses to - handle overlaps. */ - tregs->vector = 0; - tregs->format = 0; - tregs->pc = regs->pc; - tregs->sr = regs->sr; - } - return err; - -give_sigsegv: - force_sigsegv(sig, current); - goto adjust_stack; -} - -static inline void -handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler) -{ - switch (regs->d0) { - case -ERESTARTNOHAND: - if (!has_handler) - goto do_restart; - regs->d0 = -EINTR; - break; - - case -ERESTART_RESTARTBLOCK: - if (!has_handler) { - regs->d0 = __NR_restart_syscall; - regs->pc -= 2; - break; - } - regs->d0 = -EINTR; - break; - - case -ERESTARTSYS: - if (has_handler && !(ka->sa.sa_flags & SA_RESTART)) { - regs->d0 = -EINTR; - break; - } - /* fallthrough */ - case -ERESTARTNOINTR: - do_restart: - regs->d0 = regs->orig_d0; - regs->pc -= 2; - break; - } -} - -/* - * OK, we're invoking a handler - */ -static void -handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, - sigset_t *oldset, struct pt_regs *regs) -{ - int err; - /* are we from a system call? */ - if (regs->orig_d0 >= 0) - /* If so, check system call restarting.. */ - handle_restart(regs, ka, 1); - - /* set up the stack frame */ - if (ka->sa.sa_flags & SA_SIGINFO) - err = setup_rt_frame(sig, ka, info, oldset, regs); - else - err = setup_frame(sig, ka, oldset, regs); - - if (err) - return; - - spin_lock_irq(¤t->sighand->siglock); - sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); - if (!(ka->sa.sa_flags & SA_NODEFER)) - sigaddset(¤t->blocked,sig); - recalc_sigpending(); - spin_unlock_irq(¤t->sighand->siglock); - - clear_thread_flag(TIF_RESTORE_SIGMASK); -} - -/* - * Note that 'init' is a special process: it doesn't get signals it doesn't - * want to handle. Thus you cannot kill init even with a SIGKILL even by - * mistake. - */ -asmlinkage void do_signal(struct pt_regs *regs) -{ - struct k_sigaction ka; - siginfo_t info; - int signr; - sigset_t *oldset; - - /* - * We want the common case to go fast, which - * is why we may in certain cases get here from - * kernel mode. Just return without doing anything - * if so. - */ - if (!user_mode(regs)) - return; - - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - - signr = get_signal_to_deliver(&info, &ka, regs, NULL); - if (signr > 0) { - /* Whee! Actually deliver the signal. */ - handle_signal(signr, &ka, &info, oldset, regs); - return; - } - - /* Did we come from a system call? */ - if (regs->orig_d0 >= 0) { - /* Restart the system call - no handlers present */ - handle_restart(regs, NULL, 0); - } - - /* If there's no signal to deliver, we just restore the saved mask. */ - if (test_thread_flag(TIF_RESTORE_SIGMASK)) { - clear_thread_flag(TIF_RESTORE_SIGMASK); - sigprocmask(SIG_SETMASK, ¤t->saved_sigmask, NULL); - } -} diff --git a/arch/m68k/kernel/sys_m68k.c b/arch/m68k/kernel/sys_m68k.c index 8623f8dc16f..3a480b3df0d 100644 --- a/arch/m68k/kernel/sys_m68k.c +++ b/arch/m68k/kernel/sys_m68k.c @@ -479,9 +479,13 @@ sys_atomic_cmpxchg_32(unsigned long newval, int oldval, int d3, int d4, int d5, goto bad_access; } - mem_value = *mem; + /* + * No need to check for EFAULT; we know that the page is + * present and writable. + */ + __get_user(mem_value, mem); if (mem_value == oldval) - *mem = newval; + __put_user(newval, mem); pte_unmap_unlock(pte, ptl); up_read(&mm->mmap_sem); @@ -545,23 +549,6 @@ asmlinkage int sys_getpagesize(void) return PAGE_SIZE; } -/* - * Do a system call from kernel instead of calling sys_execve so we - * end up with proper pt_regs. - */ -int kernel_execve(const char *filename, - const char *const argv[], - const char *const envp[]) -{ - register long __res asm ("%d0") = __NR_execve; - register long __a asm ("%d1") = (long)(filename); - register long __b asm ("%d2") = (long)(argv); - register long __c asm ("%d3") = (long)(envp); - asm volatile ("trap #0" : "+d" (__res) - : "d" (__a), "d" (__b), "d" (__c)); - return __res; -} - asmlinkage unsigned long sys_get_thread_area(void) { return current_thread_info()->tp_value; diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S index ce827b37611..501e1021278 100644 --- a/arch/m68k/kernel/syscalltable.S +++ b/arch/m68k/kernel/syscalltable.S @@ -22,7 +22,7 @@ ALIGN ENTRY(sys_call_table) .long sys_restart_syscall /* 0 - old "setup()" system call, used for restarting */ .long sys_exit - .long sys_fork + .long __sys_fork .long sys_read .long sys_write .long sys_open /* 5 */ @@ -140,7 +140,7 @@ ENTRY(sys_call_table) .long sys_ipc .long sys_fsync .long sys_sigreturn - .long sys_clone /* 120 */ + .long __sys_clone /* 120 */ .long sys_setdomainname .long sys_newuname .long sys_cacheflush /* modify_ldt for i386 */ @@ -210,7 +210,7 @@ ENTRY(sys_call_table) .long sys_sendfile .long sys_ni_syscall /* streams1 */ .long sys_ni_syscall /* streams2 */ - .long sys_vfork /* 190 */ + .long __sys_vfork /* 190 */ .long sys_getrlimit .long sys_mmap2 .long sys_truncate64 @@ -367,4 +367,9 @@ ENTRY(sys_call_table) .long sys_setns .long sys_process_vm_readv /* 345 */ .long sys_process_vm_writev + .long sys_kcmp + .long sys_finit_module + .long sys_sched_setattr + .long sys_sched_getattr /* 350 */ + .long sys_renameat2 diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c index 75ab79b3bde..3857737e395 100644 --- a/arch/m68k/kernel/time.c +++ b/arch/m68k/kernel/time.c @@ -1,5 +1,109 @@ -#if defined(CONFIG_MMU) && !defined(CONFIG_COLDFIRE) -#include "time_mm.c" -#else -#include "time_no.c" -#endif +/* + * linux/arch/m68k/kernel/time.c + * + * Copyright (C) 1991, 1992, 1995 Linus Torvalds + * + * This file contains the m68k-specific time handling details. + * Most of the stuff is located in the machine specific files. + * + * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 + * "A Kernel Model for Precision Timekeeping" by Dave Mills + */ + +#include <linux/errno.h> +#include <linux/export.h> +#include <linux/module.h> +#include <linux/sched.h> +#include <linux/kernel.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/mm.h> +#include <linux/rtc.h> +#include <linux/platform_device.h> + +#include <asm/machdep.h> +#include <asm/io.h> +#include <asm/irq_regs.h> + +#include <linux/time.h> +#include <linux/timex.h> +#include <linux/profile.h> + + +unsigned long (*mach_random_get_entropy)(void); +EXPORT_SYMBOL_GPL(mach_random_get_entropy); + + +/* + * timer_interrupt() needs to keep up the real-time clock, + * as well as call the "xtime_update()" routine every clocktick + */ +static irqreturn_t timer_interrupt(int irq, void *dummy) +{ + xtime_update(1); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); + +#ifdef CONFIG_HEARTBEAT + /* use power LED as a heartbeat instead -- much more useful + for debugging -- based on the version for PReP by Cort */ + /* acts like an actual heart beat -- ie thump-thump-pause... */ + if (mach_heartbeat) { + static unsigned cnt = 0, period = 0, dist = 0; + + if (cnt == 0 || cnt == dist) + mach_heartbeat( 1 ); + else if (cnt == 7 || cnt == dist+7) + mach_heartbeat( 0 ); + + if (++cnt > period) { + cnt = 0; + /* The hyperbolic function below modifies the heartbeat period + * length in dependency of the current (5min) load. It goes + * through the points f(0)=126, f(1)=86, f(5)=51, + * f(inf)->30. */ + period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; + dist = period / 4; + } + } +#endif /* CONFIG_HEARTBEAT */ + return IRQ_HANDLED; +} + +void read_persistent_clock(struct timespec *ts) +{ + struct rtc_time time; + ts->tv_sec = 0; + ts->tv_nsec = 0; + + if (mach_hwclk) { + mach_hwclk(0, &time); + + if ((time.tm_year += 1900) < 1970) + time.tm_year += 100; + ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday, + time.tm_hour, time.tm_min, time.tm_sec); + } +} + +#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET + +static int __init rtc_init(void) +{ + struct platform_device *pdev; + + if (!mach_hwclk) + return -ENODEV; + + pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); + return PTR_ERR_OR_ZERO(pdev); +} + +module_init(rtc_init); + +#endif /* CONFIG_ARCH_USES_GETTIMEOFFSET */ + +void __init time_init(void) +{ + mach_sched_init(timer_interrupt); +} diff --git a/arch/m68k/kernel/time_mm.c b/arch/m68k/kernel/time_mm.c deleted file mode 100644 index 18b34ee5db3..00000000000 --- a/arch/m68k/kernel/time_mm.c +++ /dev/null @@ -1,114 +0,0 @@ -/* - * linux/arch/m68k/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * - * This file contains the m68k-specific time handling details. - * Most of the stuff is located in the machine specific files. - * - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/rtc.h> -#include <linux/platform_device.h> - -#include <asm/machdep.h> -#include <asm/io.h> -#include <asm/irq_regs.h> - -#include <linux/time.h> -#include <linux/timex.h> -#include <linux/profile.h> - -static inline int set_rtc_mmss(unsigned long nowtime) -{ - if (mach_set_clock_mmss) - return mach_set_clock_mmss (nowtime); - return -1; -} - -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "xtime_update()" routine every clocktick - */ -static irqreturn_t timer_interrupt(int irq, void *dummy) -{ - xtime_update(1); - update_process_times(user_mode(get_irq_regs())); - profile_tick(CPU_PROFILING); - -#ifdef CONFIG_HEARTBEAT - /* use power LED as a heartbeat instead -- much more useful - for debugging -- based on the version for PReP by Cort */ - /* acts like an actual heart beat -- ie thump-thump-pause... */ - if (mach_heartbeat) { - static unsigned cnt = 0, period = 0, dist = 0; - - if (cnt == 0 || cnt == dist) - mach_heartbeat( 1 ); - else if (cnt == 7 || cnt == dist+7) - mach_heartbeat( 0 ); - - if (++cnt > period) { - cnt = 0; - /* The hyperbolic function below modifies the heartbeat period - * length in dependency of the current (5min) load. It goes - * through the points f(0)=126, f(1)=86, f(5)=51, - * f(inf)->30. */ - period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30; - dist = period / 4; - } - } -#endif /* CONFIG_HEARTBEAT */ - return IRQ_HANDLED; -} - -void read_persistent_clock(struct timespec *ts) -{ - struct rtc_time time; - ts->tv_sec = 0; - ts->tv_nsec = 0; - - if (mach_hwclk) { - mach_hwclk(0, &time); - - if ((time.tm_year += 1900) < 1970) - time.tm_year += 100; - ts->tv_sec = mktime(time.tm_year, time.tm_mon, time.tm_mday, - time.tm_hour, time.tm_min, time.tm_sec); - } -} - -void __init time_init(void) -{ - mach_sched_init(timer_interrupt); -} - -u32 arch_gettimeoffset(void) -{ - return mach_gettimeoffset() * 1000; -} - -static int __init rtc_init(void) -{ - struct platform_device *pdev; - - if (!mach_hwclk) - return -ENODEV; - - pdev = platform_device_register_simple("rtc-generic", -1, NULL, 0); - if (IS_ERR(pdev)) - return PTR_ERR(pdev); - - return 0; -} - -module_init(rtc_init); diff --git a/arch/m68k/kernel/time_no.c b/arch/m68k/kernel/time_no.c deleted file mode 100644 index 3ef0f7768dc..00000000000 --- a/arch/m68k/kernel/time_no.c +++ /dev/null @@ -1,90 +0,0 @@ -/* - * linux/arch/m68knommu/kernel/time.c - * - * Copyright (C) 1991, 1992, 1995 Linus Torvalds - * - * This file contains the m68k-specific time handling details. - * Most of the stuff is located in the machine specific files. - * - * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 - * "A Kernel Model for Precision Timekeeping" by Dave Mills - */ - -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/sched.h> -#include <linux/kernel.h> -#include <linux/param.h> -#include <linux/string.h> -#include <linux/mm.h> -#include <linux/profile.h> -#include <linux/time.h> -#include <linux/timex.h> - -#include <asm/machdep.h> -#include <asm/irq_regs.h> - -#define TICK_SIZE (tick_nsec / 1000) - -/* machine dependent timer functions */ -void (*mach_gettod)(int*, int*, int*, int*, int*, int*); - -static inline int set_rtc_mmss(unsigned long nowtime) -{ - if (mach_set_clock_mmss) - return mach_set_clock_mmss (nowtime); - return -1; -} - -#ifndef CONFIG_GENERIC_CLOCKEVENTS -/* - * timer_interrupt() needs to keep up the real-time clock, - * as well as call the "xtime_update()" routine every clocktick - */ -irqreturn_t arch_timer_interrupt(int irq, void *dummy) -{ - - if (current->pid) - profile_tick(CPU_PROFILING); - - xtime_update(1); - - update_process_times(user_mode(get_irq_regs())); - - return(IRQ_HANDLED); -} -#endif - -static unsigned long read_rtc_mmss(void) -{ - unsigned int year, mon, day, hour, min, sec; - - if (mach_gettod) { - mach_gettod(&year, &mon, &day, &hour, &min, &sec); - if ((year += 1900) < 1970) - year += 100; - } else { - year = 1970; - mon = day = 1; - hour = min = sec = 0; - } - - - return mktime(year, mon, day, hour, min, sec); -} - -void read_persistent_clock(struct timespec *ts) -{ - ts->tv_sec = read_rtc_mmss(); - ts->tv_nsec = 0; -} - -int update_persistent_clock(struct timespec now) -{ - return set_rtc_mmss(now.tv_sec); -} - -void time_init(void) -{ - hw_timer_init(); -} diff --git a/arch/m68k/kernel/traps.c b/arch/m68k/kernel/traps.c index daaa9187654..6c9ca24830e 100644 --- a/arch/m68k/kernel/traps.c +++ b/arch/m68k/kernel/traps.c @@ -32,7 +32,6 @@ #include <asm/setup.h> #include <asm/fpu.h> -#include <asm/system.h> #include <asm/uaccess.h> #include <asm/traps.h> #include <asm/pgalloc.h> @@ -134,9 +133,7 @@ static inline void access_error060 (struct frame *fp) { unsigned long fslw = fp->un.fmt4.pc; /* is really FSLW for access error */ -#ifdef DEBUG - printk("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr); -#endif + pr_debug("fslw=%#lx, fa=%#lx\n", fslw, fp->un.fmt4.effaddr); if (fslw & MMU060_BPE) { /* branch prediction error -> clear branch cache */ @@ -163,9 +160,7 @@ static inline void access_error060 (struct frame *fp) } if (fslw & MMU060_W) errorcode |= 2; -#ifdef DEBUG - printk("errorcode = %d\n", errorcode ); -#endif + pr_debug("errorcode = %ld\n", errorcode); do_page_fault(&fp->ptregs, addr, errorcode); } else if (fslw & (MMU060_SEE)){ /* Software Emulation Error. @@ -174,8 +169,9 @@ static inline void access_error060 (struct frame *fp) send_fault_sig(&fp->ptregs); } else if (!(fslw & (MMU060_RE|MMU060_WE)) || send_fault_sig(&fp->ptregs) > 0) { - printk("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, fp->un.fmt4.effaddr); - printk( "68060 access error, fslw=%lx\n", fslw ); + pr_err("pc=%#lx, fa=%#lx\n", fp->ptregs.pc, + fp->un.fmt4.effaddr); + pr_err("68060 access error, fslw=%lx\n", fslw); trap_c( fp ); } } @@ -226,9 +222,7 @@ static inline int do_040writeback1(unsigned short wbs, unsigned long wba, set_fs(old_fs); -#ifdef DEBUG - printk("do_040writeback1, res=%d\n",res); -#endif + pr_debug("do_040writeback1, res=%d\n", res); return res; } @@ -250,7 +244,7 @@ static inline void do_040writebacks(struct frame *fp) int res = 0; #if 0 if (fp->un.fmt7.wb1s & WBV_040) - printk("access_error040: cannot handle 1st writeback. oops.\n"); + pr_err("access_error040: cannot handle 1st writeback. oops.\n"); #endif if ((fp->un.fmt7.wb2s & WBV_040) && @@ -303,14 +297,12 @@ static inline void access_error040(struct frame *fp) unsigned short ssw = fp->un.fmt7.ssw; unsigned long mmusr; -#ifdef DEBUG - printk("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr); - printk("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s, + pr_debug("ssw=%#x, fa=%#lx\n", ssw, fp->un.fmt7.faddr); + pr_debug("wb1s=%#x, wb2s=%#x, wb3s=%#x\n", fp->un.fmt7.wb1s, fp->un.fmt7.wb2s, fp->un.fmt7.wb3s); - printk ("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n", + pr_debug("wb2a=%lx, wb3a=%lx, wb2d=%lx, wb3d=%lx\n", fp->un.fmt7.wb2a, fp->un.fmt7.wb3a, fp->un.fmt7.wb2d, fp->un.fmt7.wb3d); -#endif if (ssw & ATC_040) { unsigned long addr = fp->un.fmt7.faddr; @@ -325,9 +317,7 @@ static inline void access_error040(struct frame *fp) /* MMU error, get the MMUSR info for this access */ mmusr = probe040(!(ssw & RW_040), addr, ssw); -#ifdef DEBUG - printk("mmusr = %lx\n", mmusr); -#endif + pr_debug("mmusr = %lx\n", mmusr); errorcode = 1; if (!(mmusr & MMU_R_040)) { /* clear the invalid atc entry */ @@ -341,14 +331,10 @@ static inline void access_error040(struct frame *fp) errorcode |= 2; if (do_page_fault(&fp->ptregs, addr, errorcode)) { -#ifdef DEBUG - printk("do_page_fault() !=0\n"); -#endif + pr_debug("do_page_fault() !=0\n"); if (user_mode(&fp->ptregs)){ /* delay writebacks after signal delivery */ -#ifdef DEBUG - printk(".. was usermode - return\n"); -#endif + pr_debug(".. was usermode - return\n"); return; } /* disable writeback into user space from kernel @@ -356,9 +342,7 @@ static inline void access_error040(struct frame *fp) * the writeback won't do good) */ disable_wb: -#ifdef DEBUG - printk(".. disabling wb2\n"); -#endif + pr_debug(".. disabling wb2\n"); if (fp->un.fmt7.wb2a == fp->un.fmt7.faddr) fp->un.fmt7.wb2s &= ~WBV_040; if (fp->un.fmt7.wb3a == fp->un.fmt7.faddr) @@ -372,7 +356,7 @@ disable_wb: current->thread.signo = SIGBUS; current->thread.faddr = fp->un.fmt7.faddr; if (send_fault_sig(&fp->ptregs) >= 0) - printk("68040 bus error (ssw=%x, faddr=%lx)\n", ssw, + pr_err("68040 bus error (ssw=%x, faddr=%lx)\n", ssw, fp->un.fmt7.faddr); goto disable_wb; } @@ -395,19 +379,17 @@ static inline void bus_error030 (struct frame *fp) unsigned short ssw = fp->un.fmtb.ssw; extern unsigned long _sun3_map_test_start, _sun3_map_test_end; -#ifdef DEBUG if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", + pr_debug("Instruction fault at %#010lx\n", ssw & FC ? fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 : fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + pr_debug("Data %s fault at %#010lx in %s (pc=%#lx)\n", ssw & RW ? "read" : "write", fp->un.fmtb.daddr, space_names[ssw & DFC], fp->ptregs.pc); -#endif /* * Check if this page should be demand-mapped. This needs to go before @@ -430,7 +412,7 @@ static inline void bus_error030 (struct frame *fp) return; /* instruction fault or kernel data fault! */ if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", + pr_err("Instruction fault at %#010lx\n", fp->ptregs.pc); if (ssw & DF) { /* was this fault incurred testing bus mappings? */ @@ -440,12 +422,12 @@ static inline void bus_error030 (struct frame *fp) return; } - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + pr_err("Data %s fault at %#010lx in %s (pc=%#lx)\n", ssw & RW ? "read" : "write", fp->un.fmtb.daddr, space_names[ssw & DFC], fp->ptregs.pc); } - printk ("BAD KERNEL BUSERR\n"); + pr_err("BAD KERNEL BUSERR\n"); die_if_kernel("Oops", &fp->ptregs,0); force_sig(SIGKILL, current); @@ -474,12 +456,11 @@ static inline void bus_error030 (struct frame *fp) else if (buserr_type & SUN3_BUSERR_INVALID) errorcode = 0x00; else { -#ifdef DEBUG - printk ("*** unexpected busfault type=%#04x\n", buserr_type); - printk ("invalid %s access at %#lx from pc %#lx\n", - !(ssw & RW) ? "write" : "read", addr, - fp->ptregs.pc); -#endif + pr_debug("*** unexpected busfault type=%#04x\n", + buserr_type); + pr_debug("invalid %s access at %#lx from pc %#lx\n", + !(ssw & RW) ? "write" : "read", addr, + fp->ptregs.pc); die_if_kernel ("Oops", &fp->ptregs, buserr_type); force_sig (SIGBUS, current); return; @@ -507,12 +488,10 @@ static inline void bus_error030 (struct frame *fp) addr -= 2; if (buserr_type & SUN3_BUSERR_INVALID) { - if (!mmu_emu_handle_fault (fp->un.fmtb.daddr, 1, 0)) + if (!mmu_emu_handle_fault(addr, 1, 0)) do_page_fault (&fp->ptregs, addr, 0); } else { -#ifdef DEBUG - printk ("protection fault on insn access (segv).\n"); -#endif + pr_debug("protection fault on insn access (segv).\n"); force_sig (SIGSEGV, current); } } @@ -526,22 +505,22 @@ static inline void bus_error030 (struct frame *fp) unsigned short ssw = fp->un.fmtb.ssw; #ifdef DEBUG unsigned long desc; +#endif - printk ("pid = %x ", current->pid); - printk ("SSW=%#06x ", ssw); + pr_debug("pid = %x ", current->pid); + pr_debug("SSW=%#06x ", ssw); if (ssw & (FC | FB)) - printk ("Instruction fault at %#010lx\n", + pr_debug("Instruction fault at %#010lx\n", ssw & FC ? fp->ptregs.format == 0xa ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2 : fp->ptregs.format == 0xa ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + pr_debug("Data %s fault at %#010lx in %s (pc=%#lx)\n", ssw & RW ? "read" : "write", fp->un.fmtb.daddr, space_names[ssw & DFC], fp->ptregs.pc); -#endif /* ++andreas: If a data fault and an instruction fault happen at the same time map in both pages. */ @@ -555,27 +534,23 @@ static inline void bus_error030 (struct frame *fp) "pmove %%psr,%1" : "=a&" (desc), "=m" (temp) : "a" (addr), "d" (ssw)); + pr_debug("mmusr is %#x for addr %#lx in task %p\n", + temp, addr, current); + pr_debug("descriptor address is 0x%p, contents %#lx\n", + __va(desc), *(unsigned long *)__va(desc)); #else asm volatile ("ptestr %2,%1@,#7\n\t" "pmove %%psr,%0" : "=m" (temp) : "a" (addr), "d" (ssw)); #endif mmusr = temp; - -#ifdef DEBUG - printk("mmusr is %#x for addr %#lx in task %p\n", - mmusr, addr, current); - printk("descriptor address is %#lx, contents %#lx\n", - __va(desc), *(unsigned long *)__va(desc)); -#endif - errorcode = (mmusr & MMU_I) ? 0 : 1; if (!(ssw & RW) || (ssw & RM)) errorcode |= 2; if (mmusr & (MMU_I | MMU_WP)) { if (ssw & 4) { - printk("Data %s fault at %#010lx in %s (pc=%#lx)\n", + pr_err("Data %s fault at %#010lx in %s (pc=%#lx)\n", ssw & RW ? "read" : "write", fp->un.fmtb.daddr, space_names[ssw & DFC], fp->ptregs.pc); @@ -588,9 +563,10 @@ static inline void bus_error030 (struct frame *fp) } else if (!(mmusr & MMU_I)) { /* probably a 020 cas fault */ if (!(ssw & RM) && send_fault_sig(&fp->ptregs) > 0) - printk("unexpected bus error (%#x,%#x)\n", ssw, mmusr); + pr_err("unexpected bus error (%#x,%#x)\n", ssw, + mmusr); } else if (mmusr & (MMU_B|MMU_L|MMU_S)) { - printk("invalid %s access at %#lx from pc %#lx\n", + pr_err("invalid %s access at %#lx from pc %#lx\n", !(ssw & RW) ? "write" : "read", addr, fp->ptregs.pc); die_if_kernel("Oops",&fp->ptregs,mmusr); @@ -601,7 +577,7 @@ static inline void bus_error030 (struct frame *fp) static volatile long tlong; #endif - printk("weird %s access at %#lx from pc %#lx (ssw is %#x)\n", + pr_err("weird %s access at %#lx from pc %#lx (ssw is %#x)\n", !(ssw & RW) ? "write" : "read", addr, fp->ptregs.pc, ssw); asm volatile ("ptestr #1,%1@,#0\n\t" @@ -610,18 +586,16 @@ static inline void bus_error030 (struct frame *fp) : "a" (addr)); mmusr = temp; - printk ("level 0 mmusr is %#x\n", mmusr); + pr_err("level 0 mmusr is %#x\n", mmusr); #if 0 asm volatile ("pmove %%tt0,%0" : "=m" (tlong)); - printk("tt0 is %#lx, ", tlong); + pr_debug("tt0 is %#lx, ", tlong); asm volatile ("pmove %%tt1,%0" : "=m" (tlong)); - printk("tt1 is %#lx\n", tlong); -#endif -#ifdef DEBUG - printk("Unknown SIGSEGV - 1\n"); + pr_debug("tt1 is %#lx\n", tlong); #endif + pr_debug("Unknown SIGSEGV - 1\n"); die_if_kernel("Oops",&fp->ptregs,mmusr); force_sig(SIGSEGV, current); return; @@ -642,10 +616,9 @@ static inline void bus_error030 (struct frame *fp) return; if (fp->ptregs.sr & PS_S) { - printk("Instruction fault at %#010lx\n", - fp->ptregs.pc); + pr_err("Instruction fault at %#010lx\n", fp->ptregs.pc); buserr: - printk ("BAD KERNEL BUSERR\n"); + pr_err("BAD KERNEL BUSERR\n"); die_if_kernel("Oops",&fp->ptregs,0); force_sig(SIGKILL, current); return; @@ -669,28 +642,22 @@ static inline void bus_error030 (struct frame *fp) "pmove %%psr,%1" : "=a&" (desc), "=m" (temp) : "a" (addr)); + pr_debug("mmusr is %#x for addr %#lx in task %p\n", + temp, addr, current); + pr_debug("descriptor address is 0x%p, contents %#lx\n", + __va(desc), *(unsigned long *)__va(desc)); #else asm volatile ("ptestr #1,%1@,#7\n\t" "pmove %%psr,%0" : "=m" (temp) : "a" (addr)); #endif mmusr = temp; - -#ifdef DEBUG - printk ("mmusr is %#x for addr %#lx in task %p\n", - mmusr, addr, current); - printk ("descriptor address is %#lx, contents %#lx\n", - __va(desc), *(unsigned long *)__va(desc)); -#endif - if (mmusr & MMU_I) do_page_fault (&fp->ptregs, addr, 0); else if (mmusr & (MMU_B|MMU_L|MMU_S)) { - printk ("invalid insn access at %#lx from pc %#lx\n", + pr_err("invalid insn access at %#lx from pc %#lx\n", addr, fp->ptregs.pc); -#ifdef DEBUG - printk("Unknown SIGSEGV - 2\n"); -#endif + pr_debug("Unknown SIGSEGV - 2\n"); die_if_kernel("Oops",&fp->ptregs,mmusr); force_sig(SIGSEGV, current); return; @@ -792,9 +759,7 @@ asmlinkage void buserr_c(struct frame *fp) if (user_mode(&fp->ptregs)) current->thread.esp0 = (unsigned long) fp; -#ifdef DEBUG - printk ("*** Bus Error *** Format is %x\n", fp->ptregs.format); -#endif + pr_debug("*** Bus Error *** Format is %x\n", fp->ptregs.format); #if defined(CONFIG_COLDFIRE) && defined(CONFIG_MMU) if (CPU_IS_COLDFIRE) { @@ -837,9 +802,7 @@ asmlinkage void buserr_c(struct frame *fp) #endif default: die_if_kernel("bad frame format",&fp->ptregs,0); -#ifdef DEBUG - printk("Unknown SIGSEGV - 4\n"); -#endif + pr_debug("Unknown SIGSEGV - 4\n"); force_sig(SIGSEGV, current); } } @@ -853,7 +816,7 @@ void show_trace(unsigned long *stack) unsigned long addr; int i; - printk("Call Trace:"); + pr_info("Call Trace:"); addr = (unsigned long)stack + THREAD_SIZE - 1; endstack = (unsigned long *)(addr & -THREAD_SIZE); i = 0; @@ -870,13 +833,13 @@ void show_trace(unsigned long *stack) if (__kernel_text_address(addr)) { #ifndef CONFIG_KALLSYMS if (i % 5 == 0) - printk("\n "); + pr_cont("\n "); #endif - printk(" [<%08lx>] %pS\n", addr, (void *)addr); + pr_cont(" [<%08lx>] %pS\n", addr, (void *)addr); i++; } } - printk("\n"); + pr_cont("\n"); } void show_registers(struct pt_regs *regs) @@ -888,81 +851,87 @@ void show_registers(struct pt_regs *regs) int i; print_modules(); - printk("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc); - printk("SR: %04x SP: %p a2: %08lx\n", regs->sr, regs, regs->a2); - printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", + pr_info("PC: [<%08lx>] %pS\n", regs->pc, (void *)regs->pc); + pr_info("SR: %04x SP: %p a2: %08lx\n", regs->sr, regs, regs->a2); + pr_info("d0: %08lx d1: %08lx d2: %08lx d3: %08lx\n", regs->d0, regs->d1, regs->d2, regs->d3); - printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", + pr_info("d4: %08lx d5: %08lx a0: %08lx a1: %08lx\n", regs->d4, regs->d5, regs->a0, regs->a1); - printk("Process %s (pid: %d, task=%p)\n", + pr_info("Process %s (pid: %d, task=%p)\n", current->comm, task_pid_nr(current), current); addr = (unsigned long)&fp->un; - printk("Frame format=%X ", regs->format); + pr_info("Frame format=%X ", regs->format); switch (regs->format) { case 0x2: - printk("instr addr=%08lx\n", fp->un.fmt2.iaddr); + pr_cont("instr addr=%08lx\n", fp->un.fmt2.iaddr); addr += sizeof(fp->un.fmt2); break; case 0x3: - printk("eff addr=%08lx\n", fp->un.fmt3.effaddr); + pr_cont("eff addr=%08lx\n", fp->un.fmt3.effaddr); addr += sizeof(fp->un.fmt3); break; case 0x4: - printk((CPU_IS_060 ? "fault addr=%08lx fslw=%08lx\n" - : "eff addr=%08lx pc=%08lx\n"), - fp->un.fmt4.effaddr, fp->un.fmt4.pc); + if (CPU_IS_060) + pr_cont("fault addr=%08lx fslw=%08lx\n", + fp->un.fmt4.effaddr, fp->un.fmt4.pc); + else + pr_cont("eff addr=%08lx pc=%08lx\n", + fp->un.fmt4.effaddr, fp->un.fmt4.pc); addr += sizeof(fp->un.fmt4); break; case 0x7: - printk("eff addr=%08lx ssw=%04x faddr=%08lx\n", + pr_cont("eff addr=%08lx ssw=%04x faddr=%08lx\n", fp->un.fmt7.effaddr, fp->un.fmt7.ssw, fp->un.fmt7.faddr); - printk("wb 1 stat/addr/data: %04x %08lx %08lx\n", + pr_info("wb 1 stat/addr/data: %04x %08lx %08lx\n", fp->un.fmt7.wb1s, fp->un.fmt7.wb1a, fp->un.fmt7.wb1dpd0); - printk("wb 2 stat/addr/data: %04x %08lx %08lx\n", + pr_info("wb 2 stat/addr/data: %04x %08lx %08lx\n", fp->un.fmt7.wb2s, fp->un.fmt7.wb2a, fp->un.fmt7.wb2d); - printk("wb 3 stat/addr/data: %04x %08lx %08lx\n", + pr_info("wb 3 stat/addr/data: %04x %08lx %08lx\n", fp->un.fmt7.wb3s, fp->un.fmt7.wb3a, fp->un.fmt7.wb3d); - printk("push data: %08lx %08lx %08lx %08lx\n", + pr_info("push data: %08lx %08lx %08lx %08lx\n", fp->un.fmt7.wb1dpd0, fp->un.fmt7.pd1, fp->un.fmt7.pd2, fp->un.fmt7.pd3); addr += sizeof(fp->un.fmt7); break; case 0x9: - printk("instr addr=%08lx\n", fp->un.fmt9.iaddr); + pr_cont("instr addr=%08lx\n", fp->un.fmt9.iaddr); addr += sizeof(fp->un.fmt9); break; case 0xa: - printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", + pr_cont("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", fp->un.fmta.ssw, fp->un.fmta.isc, fp->un.fmta.isb, fp->un.fmta.daddr, fp->un.fmta.dobuf); addr += sizeof(fp->un.fmta); break; case 0xb: - printk("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", + pr_cont("ssw=%04x isc=%04x isb=%04x daddr=%08lx dobuf=%08lx\n", fp->un.fmtb.ssw, fp->un.fmtb.isc, fp->un.fmtb.isb, fp->un.fmtb.daddr, fp->un.fmtb.dobuf); - printk("baddr=%08lx dibuf=%08lx ver=%x\n", + pr_info("baddr=%08lx dibuf=%08lx ver=%x\n", fp->un.fmtb.baddr, fp->un.fmtb.dibuf, fp->un.fmtb.ver); addr += sizeof(fp->un.fmtb); break; default: - printk("\n"); + pr_cont("\n"); } show_stack(NULL, (unsigned long *)addr); - printk("Code:"); + pr_info("Code:"); set_fs(KERNEL_DS); cp = (u16 *)regs->pc; for (i = -8; i < 16; i++) { if (get_user(c, cp + i) && i >= 0) { - printk(" Bad PC value."); + pr_cont(" Bad PC value."); break; } - printk(i ? " %04x" : " <%04x>", c); + if (i) + pr_cont(" %04x", c); + else + pr_cont(" <%04x>", c); } set_fs(old_fs); - printk ("\n"); + pr_cont("\n"); } void show_stack(struct task_struct *task, unsigned long *stack) @@ -979,32 +948,20 @@ void show_stack(struct task_struct *task, unsigned long *stack) } endstack = (unsigned long *)(((unsigned long)stack + THREAD_SIZE - 1) & -THREAD_SIZE); - printk("Stack from %08lx:", (unsigned long)stack); + pr_info("Stack from %08lx:", (unsigned long)stack); p = stack; for (i = 0; i < kstack_depth_to_print; i++) { if (p + 1 > endstack) break; if (i % 8 == 0) - printk("\n "); - printk(" %08lx", *p++); + pr_cont("\n "); + pr_cont(" %08lx", *p++); } - printk("\n"); + pr_cont("\n"); show_trace(stack); } /* - * The architecture-independent backtrace generator - */ -void dump_stack(void) -{ - unsigned long stack; - - show_trace(&stack); -} - -EXPORT_SYMBOL(dump_stack); - -/* * The vector number returned in the frame pointer may also contain * the "fs" (Fault Status) bits on ColdFire. These are in the bottom * 2 bits, and upper 2 bits. So we need to mask out the real vector @@ -1018,32 +975,32 @@ void bad_super_trap (struct frame *fp) console_verbose(); if (vector < ARRAY_SIZE(vec_names)) - printk ("*** %s *** FORMAT=%X\n", + pr_err("*** %s *** FORMAT=%X\n", vec_names[vector], fp->ptregs.format); else - printk ("*** Exception %d *** FORMAT=%X\n", + pr_err("*** Exception %d *** FORMAT=%X\n", vector, fp->ptregs.format); if (vector == VEC_ADDRERR && CPU_IS_020_OR_030) { unsigned short ssw = fp->un.fmtb.ssw; - printk ("SSW=%#06x ", ssw); + pr_err("SSW=%#06x ", ssw); if (ssw & RC) - printk ("Pipe stage C instruction fault at %#010lx\n", + pr_err("Pipe stage C instruction fault at %#010lx\n", (fp->ptregs.format) == 0xA ? fp->ptregs.pc + 2 : fp->un.fmtb.baddr - 2); if (ssw & RB) - printk ("Pipe stage B instruction fault at %#010lx\n", + pr_err("Pipe stage B instruction fault at %#010lx\n", (fp->ptregs.format) == 0xA ? fp->ptregs.pc + 4 : fp->un.fmtb.baddr); if (ssw & DF) - printk ("Data %s fault at %#010lx in %s (pc=%#lx)\n", + pr_err("Data %s fault at %#010lx in %s (pc=%#lx)\n", ssw & RW ? "read" : "write", fp->un.fmtb.daddr, space_names[ssw & DFC], fp->ptregs.pc); } - printk ("Current process id is %d\n", task_pid_nr(current)); + pr_err("Current process id is %d\n", task_pid_nr(current)); die_if_kernel("BAD KERNEL TRAP", &fp->ptregs, 0); } @@ -1175,9 +1132,9 @@ void die_if_kernel (char *str, struct pt_regs *fp, int nr) return; console_verbose(); - printk("%s: %08x\n",str,nr); + pr_crit("%s: %08x\n", str, nr); show_registers(fp); - add_taint(TAINT_DIE); + add_taint(TAINT_DIE, LOCKDEP_NOW_UNRELIABLE); do_exit(SIGSEGV); } diff --git a/arch/m68k/kernel/vectors.c b/arch/m68k/kernel/vectors.c index 147b03fbc71..322c977bb9e 100644 --- a/arch/m68k/kernel/vectors.c +++ b/arch/m68k/kernel/vectors.c @@ -25,7 +25,6 @@ #include <asm/setup.h> #include <asm/fpu.h> -#include <asm/system.h> #include <asm/traps.h> /* assembler routines */ diff --git a/arch/m68k/kernel/vmlinux-nommu.lds b/arch/m68k/kernel/vmlinux-nommu.lds index 8e66ccb0935..06a763f49fd 100644 --- a/arch/m68k/kernel/vmlinux-nommu.lds +++ b/arch/m68k/kernel/vmlinux-nommu.lds @@ -1,195 +1,91 @@ /* * vmlinux.lds.S -- master linker script for m68knommu arch * - * (C) Copyright 2002-2006, Greg Ungerer <gerg@snapgear.com> + * (C) Copyright 2002-2012, Greg Ungerer <gerg@snapgear.com> * * This linker script is equipped to build either ROM loaded or RAM * run kernels. */ -#include <asm-generic/vmlinux.lds.h> -#include <asm/page.h> -#include <asm/thread_info.h> - #if defined(CONFIG_RAMKERNEL) -#define RAM_START CONFIG_KERNELBASE -#define RAM_LENGTH (CONFIG_RAMBASE + CONFIG_RAMSIZE - CONFIG_KERNELBASE) -#define TEXT ram -#define DATA ram -#define INIT ram -#define BSSS ram -#endif -#if defined(CONFIG_ROMKERNEL) || defined(CONFIG_HIMEMKERNEL) -#define RAM_START CONFIG_RAMBASE -#define RAM_LENGTH CONFIG_RAMSIZE -#define ROMVEC_START CONFIG_ROMVEC -#define ROMVEC_LENGTH CONFIG_ROMVECSIZE -#define ROM_START CONFIG_ROMSTART -#define ROM_LENGTH CONFIG_ROMSIZE -#define TEXT rom -#define DATA ram -#define INIT ram -#define BSSS ram +#define KTEXT_ADDR CONFIG_KERNELBASE #endif - -#ifndef DATA_ADDR -#define DATA_ADDR +#if defined(CONFIG_ROMKERNEL) +#define KTEXT_ADDR CONFIG_ROMSTART +#define KDATA_ADDR CONFIG_KERNELBASE +#define LOAD_OFFSET KDATA_ADDR + (ADDR(.text) + SIZEOF(.text)) #endif +#include <asm/page.h> +#include <asm/thread_info.h> +#include <asm-generic/vmlinux.lds.h> OUTPUT_ARCH(m68k) ENTRY(_start) -MEMORY { - ram : ORIGIN = RAM_START, LENGTH = RAM_LENGTH -#ifdef ROM_START - romvec : ORIGIN = ROMVEC_START, LENGTH = ROMVEC_LENGTH - rom : ORIGIN = ROM_START, LENGTH = ROM_LENGTH -#endif -} - jiffies = jiffies_64 + 4; SECTIONS { -#ifdef ROMVEC_START - . = ROMVEC_START ; +#ifdef CONFIG_ROMVEC + . = CONFIG_ROMVEC; .romvec : { - __rom_start = . ; + __rom_start = .; _romvec = .; + *(.romvec) *(.data..initvect) - } > romvec + } #endif + . = KTEXT_ADDR; + + _text = .; + _stext = .; .text : { - _text = .; - _stext = . ; HEAD_TEXT TEXT_TEXT SCHED_TEXT LOCK_TEXT - *(.text..lock) *(.fixup) + . = ALIGN(16); + } + _etext = .; + +#ifdef KDATA_ADDR + . = KDATA_ADDR; +#endif + + _sdata = .; + RO_DATA_SECTION(PAGE_SIZE) + RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE) + _edata = .; - . = ALIGN(16); /* Exception table */ - __start___ex_table = .; - *(__ex_table) - __stop___ex_table = .; - - *(.rodata) *(.rodata.*) - *(__vermagic) /* Kernel version magic */ - *(.rodata1) - *(.rodata.str1.1) - - /* Kernel symbol table: Normal symbols */ - . = ALIGN(4); - __start___ksymtab = .; - *(SORT(___ksymtab+*)) - __stop___ksymtab = .; - - /* Kernel symbol table: GPL-only symbols */ - __start___ksymtab_gpl = .; - *(SORT(___ksymtab_gpl+*)) - __stop___ksymtab_gpl = .; - - /* Kernel symbol table: Normal unused symbols */ - __start___ksymtab_unused = .; - *(SORT(___ksymtab_unused+*)) - __stop___ksymtab_unused = .; - - /* Kernel symbol table: GPL-only unused symbols */ - __start___ksymtab_unused_gpl = .; - *(SORT(___ksymtab_unused_gpl+*)) - __stop___ksymtab_unused_gpl = .; - - /* Kernel symbol table: GPL-future symbols */ - __start___ksymtab_gpl_future = .; - *(SORT(___ksymtab_gpl_future+*)) - __stop___ksymtab_gpl_future = .; - - /* Kernel symbol table: Normal symbols */ - __start___kcrctab = .; - *(SORT(___kcrctab+*)) - __stop___kcrctab = .; - - /* Kernel symbol table: GPL-only symbols */ - __start___kcrctab_gpl = .; - *(SORT(___kcrctab_gpl+*)) - __stop___kcrctab_gpl = .; - - /* Kernel symbol table: Normal unused symbols */ - __start___kcrctab_unused = .; - *(SORT(___kcrctab_unused+*)) - __stop___kcrctab_unused = .; - - /* Kernel symbol table: GPL-only unused symbols */ - __start___kcrctab_unused_gpl = .; - *(SORT(___kcrctab_unused_gpl+*)) - __stop___kcrctab_unused_gpl = .; - - /* Kernel symbol table: GPL-future symbols */ - __start___kcrctab_gpl_future = .; - *(SORT(___kcrctab_gpl_future+*)) - __stop___kcrctab_gpl_future = .; - - /* Kernel symbol table: strings */ - *(__ksymtab_strings) - - /* Built-in module parameters */ - . = ALIGN(4) ; - __start___param = .; - *(__param) - __stop___param = .; - - /* Built-in module versions */ - . = ALIGN(4) ; - __start___modver = .; - *(__modver) - __stop___modver = .; - - . = ALIGN(4) ; - _etext = . ; - } > TEXT - - .data DATA_ADDR : { - . = ALIGN(4); - _sdata = . ; - DATA_DATA - CACHELINE_ALIGNED_DATA(32) - PAGE_ALIGNED_DATA(PAGE_SIZE) - *(.data..shared_aligned) - INIT_TASK_DATA(THREAD_SIZE) - _edata = . ; - } > DATA + EXCEPTION_TABLE(16) + NOTES + . = ALIGN(PAGE_SIZE); + __init_begin = .; + INIT_TEXT_SECTION(PAGE_SIZE) + INIT_DATA_SECTION(16) + PERCPU_SECTION(16) .m68k_fixup : { __start_fixup = .; *(.m68k_fixup) __stop_fixup = .; - } > DATA - NOTES > DATA - - .init.text : { - . = ALIGN(PAGE_SIZE); - __init_begin = .; - } > INIT - INIT_TEXT_SECTION(PAGE_SIZE) > INIT - INIT_DATA_SECTION(16) > INIT + } .init.data : { . = ALIGN(PAGE_SIZE); __init_end = .; - } > INIT - - .bss : { - . = ALIGN(4); - _sbss = . ; - *(.bss) - *(COMMON) - . = ALIGN(4) ; - _ebss = . ; - _end = . ; - } > BSSS + } + + BSS_SECTION(0, 0, 0) + + _end = .; + + STABS_DEBUG + .comment 0 : { *(.comment) } + /* Sections to be discarded */ DISCARDS } diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds index 63407c83682..d0993594f55 100644 --- a/arch/m68k/kernel/vmlinux-std.lds +++ b/arch/m68k/kernel/vmlinux-std.lds @@ -31,9 +31,7 @@ SECTIONS RW_DATA_SECTION(16, PAGE_SIZE, THREAD_SIZE) - _sbss = .; BSS_SECTION(0, 0, 0) - _ebss = .; _edata = .; /* End of data section */ diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds index ad0f46d64c0..8080469ee6c 100644 --- a/arch/m68k/kernel/vmlinux-sun3.lds +++ b/arch/m68k/kernel/vmlinux-sun3.lds @@ -44,9 +44,7 @@ __init_begin = .; . = ALIGN(PAGE_SIZE); __init_end = .; - _sbss = .; BSS_SECTION(0, 0, 0) - _ebss = .; _end = . ; |