diff options
Diffstat (limited to 'arch/sparc64/kernel/sys_sparc.c')
| -rw-r--r-- | arch/sparc64/kernel/sys_sparc.c | 731 |
1 files changed, 0 insertions, 731 deletions
diff --git a/arch/sparc64/kernel/sys_sparc.c b/arch/sparc64/kernel/sys_sparc.c deleted file mode 100644 index 5f8c822a2b4..00000000000 --- a/arch/sparc64/kernel/sys_sparc.c +++ /dev/null @@ -1,731 +0,0 @@ -/* $Id: sys_sparc.c,v 1.57 2002/02/09 19:49:30 davem Exp $ - * linux/arch/sparc64/kernel/sys_sparc.c - * - * This file contains various random system calls that - * have a non-standard calling sequence on the Linux/sparc - * platform. - */ - -#include <linux/config.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/sched.h> -#include <linux/fs.h> -#include <linux/file.h> -#include <linux/mm.h> -#include <linux/sem.h> -#include <linux/msg.h> -#include <linux/shm.h> -#include <linux/stat.h> -#include <linux/mman.h> -#include <linux/utsname.h> -#include <linux/smp.h> -#include <linux/smp_lock.h> -#include <linux/slab.h> -#include <linux/syscalls.h> -#include <linux/ipc.h> -#include <linux/personality.h> - -#include <asm/uaccess.h> -#include <asm/ipc.h> -#include <asm/utrap.h> -#include <asm/perfctr.h> - -/* #define DEBUG_UNIMP_SYSCALL */ - -/* XXX Make this per-binary type, this way we can detect the type of - * XXX a binary. Every Sparc executable calls this very early on. - */ -asmlinkage unsigned long sys_getpagesize(void) -{ - return PAGE_SIZE; -} - -#define COLOUR_ALIGN(addr,pgoff) \ - ((((addr)+SHMLBA-1)&~(SHMLBA-1)) + \ - (((pgoff)<<PAGE_SHIFT) & (SHMLBA-1))) - -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct mm_struct *mm = current->mm; - struct vm_area_struct * vma; - unsigned long task_size = TASK_SIZE; - unsigned long start_addr; - int do_color_align; - - if (flags & MAP_FIXED) { - /* We do not accept a shared mapping if it would violate - * cache aliasing constraints. - */ - if ((flags & MAP_SHARED) && - ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1))) - return -EINVAL; - return addr; - } - - if (test_thread_flag(TIF_32BIT)) - task_size = 0xf0000000UL; - if (len > task_size || len > -PAGE_OFFSET) - return -ENOMEM; - - do_color_align = 0; - if (filp || (flags & MAP_SHARED)) - do_color_align = 1; - - if (addr) { - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(addr); - - vma = find_vma(mm, addr); - if (task_size - len >= addr && - (!vma || addr + len <= vma->vm_start)) - return addr; - } - - if (len <= mm->cached_hole_size) { - mm->cached_hole_size = 0; - mm->free_area_cache = TASK_UNMAPPED_BASE; - } - start_addr = addr = mm->free_area_cache; - - task_size -= len; - -full_search: - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); - else - addr = PAGE_ALIGN(addr); - - for (vma = find_vma(mm, addr); ; vma = vma->vm_next) { - /* At this point: (!vma || addr < vma->vm_end). */ - if (addr < PAGE_OFFSET && -PAGE_OFFSET - len < addr) { - addr = PAGE_OFFSET; - vma = find_vma(mm, PAGE_OFFSET); - } - if (task_size < addr) { - if (start_addr != TASK_UNMAPPED_BASE) { - start_addr = addr = TASK_UNMAPPED_BASE; - mm->cached_hole_size = 0; - goto full_search; - } - return -ENOMEM; - } - if (!vma || addr + len <= vma->vm_start) { - /* - * Remember the place where we stopped the search: - */ - mm->free_area_cache = addr + len; - return addr; - } - if (addr + mm->cached_hole_size < vma->vm_start) - mm->cached_hole_size = vma->vm_start - addr; - - addr = vma->vm_end; - if (do_color_align) - addr = COLOUR_ALIGN(addr, pgoff); - } -} - -/* Try to align mapping such that we align it as much as possible. */ -unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, unsigned long len, unsigned long pgoff, unsigned long flags) -{ - unsigned long align_goal, addr = -ENOMEM; - - if (flags & MAP_FIXED) { - /* Ok, don't mess with it. */ - return get_unmapped_area(NULL, addr, len, pgoff, flags); - } - flags &= ~MAP_SHARED; - - align_goal = PAGE_SIZE; - if (len >= (4UL * 1024 * 1024)) - align_goal = (4UL * 1024 * 1024); - else if (len >= (512UL * 1024)) - align_goal = (512UL * 1024); - else if (len >= (64UL * 1024)) - align_goal = (64UL * 1024); - - do { - addr = get_unmapped_area(NULL, orig_addr, len + (align_goal - PAGE_SIZE), pgoff, flags); - if (!(addr & ~PAGE_MASK)) { - addr = (addr + (align_goal - 1UL)) & ~(align_goal - 1UL); - break; - } - - if (align_goal == (4UL * 1024 * 1024)) - align_goal = (512UL * 1024); - else if (align_goal == (512UL * 1024)) - align_goal = (64UL * 1024); - else - align_goal = PAGE_SIZE; - } while ((addr & ~PAGE_MASK) && align_goal > PAGE_SIZE); - - /* Mapping is smaller than 64K or larger areas could not - * be obtained. - */ - if (addr & ~PAGE_MASK) - addr = get_unmapped_area(NULL, orig_addr, len, pgoff, flags); - - return addr; -} - -asmlinkage unsigned long sparc_brk(unsigned long brk) -{ - /* People could try to be nasty and use ta 0x6d in 32bit programs */ - if (test_thread_flag(TIF_32BIT) && - brk >= 0xf0000000UL) - return current->mm->brk; - - if ((current->mm->brk & PAGE_OFFSET) != (brk & PAGE_OFFSET)) - return current->mm->brk; - return sys_brk(brk); -} - -/* - * sys_pipe() is the normal C calling standard for creating - * a pipe. It's not the way unix traditionally does this, though. - */ -asmlinkage long sparc_pipe(struct pt_regs *regs) -{ - int fd[2]; - int error; - - error = do_pipe(fd); - if (error) - goto out; - regs->u_regs[UREG_I1] = fd[1]; - error = fd[0]; -out: - return error; -} - -/* - * sys_ipc() is the de-multiplexer for the SysV IPC calls.. - * - * This is really horribly ugly. - */ - -asmlinkage long sys_ipc(unsigned int call, int first, unsigned long second, - unsigned long third, void __user *ptr, long fifth) -{ - int err; - - /* No need for backward compatibility. We can start fresh... */ - if (call <= SEMCTL) { - switch (call) { - case SEMOP: - err = sys_semtimedop(first, ptr, - (unsigned)second, NULL); - goto out; - case SEMTIMEDOP: - err = sys_semtimedop(first, ptr, (unsigned)second, - (const struct timespec __user *) fifth); - goto out; - case SEMGET: - err = sys_semget(first, (int)second, (int)third); - goto out; - case SEMCTL: { - union semun fourth; - err = -EINVAL; - if (!ptr) - goto out; - err = -EFAULT; - if (get_user(fourth.__pad, - (void __user * __user *) ptr)) - goto out; - err = sys_semctl(first, (int)second | IPC_64, - (int)third, fourth); - goto out; - } - default: - err = -ENOSYS; - goto out; - }; - } - if (call <= MSGCTL) { - switch (call) { - case MSGSND: - err = sys_msgsnd(first, ptr, (size_t)second, - (int)third); - goto out; - case MSGRCV: - err = sys_msgrcv(first, ptr, (size_t)second, fifth, - (int)third); - goto out; - case MSGGET: - err = sys_msgget((key_t)first, (int)second); - goto out; - case MSGCTL: - err = sys_msgctl(first, (int)second | IPC_64, ptr); - goto out; - default: - err = -ENOSYS; - goto out; - }; - } - if (call <= SHMCTL) { - switch (call) { - case SHMAT: { - ulong raddr; - err = do_shmat(first, ptr, (int)second, &raddr); - if (!err) { - if (put_user(raddr, - (ulong __user *) third)) - err = -EFAULT; - } - goto out; - } - case SHMDT: - err = sys_shmdt(ptr); - goto out; - case SHMGET: - err = sys_shmget(first, (size_t)second, (int)third); - goto out; - case SHMCTL: - err = sys_shmctl(first, (int)second | IPC_64, ptr); - goto out; - default: - err = -ENOSYS; - goto out; - }; - } else { - err = -ENOSYS; - } -out: - return err; -} - -asmlinkage long sparc64_newuname(struct new_utsname __user *name) -{ - int ret = sys_newuname(name); - - if (current->personality == PER_LINUX32 && !ret) { - ret = (copy_to_user(name->machine, "sparc\0\0", 8) - ? -EFAULT : 0); - } - return ret; -} - -asmlinkage long sparc64_personality(unsigned long personality) -{ - int ret; - - if (current->personality == PER_LINUX32 && - personality == PER_LINUX) - personality = PER_LINUX32; - ret = sys_personality(personality); - if (ret == PER_LINUX32) - ret = PER_LINUX; - - return ret; -} - -/* Linux version of mmap */ -asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len, - unsigned long prot, unsigned long flags, unsigned long fd, - unsigned long off) -{ - struct file * file = NULL; - unsigned long retval = -EBADF; - - if (!(flags & MAP_ANONYMOUS)) { - file = fget(fd); - if (!file) - goto out; - } - flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); - len = PAGE_ALIGN(len); - retval = -EINVAL; - - if (test_thread_flag(TIF_32BIT)) { - if (len > 0xf0000000UL || - ((flags & MAP_FIXED) && addr > 0xf0000000UL - len)) - goto out_putf; - } else { - if (len > -PAGE_OFFSET || - ((flags & MAP_FIXED) && - addr < PAGE_OFFSET && addr + len > -PAGE_OFFSET)) - goto out_putf; - } - - down_write(¤t->mm->mmap_sem); - retval = do_mmap(file, addr, len, prot, flags, off); - up_write(¤t->mm->mmap_sem); - -out_putf: - if (file) - fput(file); -out: - return retval; -} - -asmlinkage long sys64_munmap(unsigned long addr, size_t len) -{ - long ret; - - if (len > -PAGE_OFFSET || - (addr < PAGE_OFFSET && addr + len > -PAGE_OFFSET)) - return -EINVAL; - down_write(¤t->mm->mmap_sem); - ret = do_munmap(current->mm, addr, len); - up_write(¤t->mm->mmap_sem); - return ret; -} - -extern unsigned long do_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr); - -asmlinkage unsigned long sys64_mremap(unsigned long addr, - unsigned long old_len, unsigned long new_len, - unsigned long flags, unsigned long new_addr) -{ - struct vm_area_struct *vma; - unsigned long ret = -EINVAL; - if (test_thread_flag(TIF_32BIT)) - goto out; - if (old_len > -PAGE_OFFSET || new_len > -PAGE_OFFSET) - goto out; - if (addr < PAGE_OFFSET && addr + old_len > -PAGE_OFFSET) - goto out; - down_write(¤t->mm->mmap_sem); - if (flags & MREMAP_FIXED) { - if (new_addr < PAGE_OFFSET && - new_addr + new_len > -PAGE_OFFSET) - goto out_sem; - } else if (addr < PAGE_OFFSET && addr + new_len > -PAGE_OFFSET) { - unsigned long map_flags = 0; - struct file *file = NULL; - - ret = -ENOMEM; - if (!(flags & MREMAP_MAYMOVE)) - goto out_sem; - - vma = find_vma(current->mm, addr); - if (vma) { - if (vma->vm_flags & VM_SHARED) - map_flags |= MAP_SHARED; - file = vma->vm_file; - } - - /* MREMAP_FIXED checked above. */ - new_addr = get_unmapped_area(file, addr, new_len, - vma ? vma->vm_pgoff : 0, - map_flags); - ret = new_addr; - if (new_addr & ~PAGE_MASK) - goto out_sem; - flags |= MREMAP_FIXED; - } - ret = do_mremap(addr, old_len, new_len, flags, new_addr); -out_sem: - up_write(¤t->mm->mmap_sem); -out: - return ret; -} - -/* we come to here via sys_nis_syscall so it can setup the regs argument */ -asmlinkage unsigned long c_sys_nis_syscall(struct pt_regs *regs) -{ - static int count; - - /* Don't make the system unusable, if someone goes stuck */ - if (count++ > 5) - return -ENOSYS; - - printk ("Unimplemented SPARC system call %ld\n",regs->u_regs[1]); -#ifdef DEBUG_UNIMP_SYSCALL - show_regs (regs); -#endif - - return -ENOSYS; -} - -/* #define DEBUG_SPARC_BREAKPOINT */ - -asmlinkage void sparc_breakpoint(struct pt_regs *regs) -{ - siginfo_t info; - - if (test_thread_flag(TIF_32BIT)) { - regs->tpc &= 0xffffffff; - regs->tnpc &= 0xffffffff; - } -#ifdef DEBUG_SPARC_BREAKPOINT - printk ("TRAP: Entering kernel PC=%lx, nPC=%lx\n", regs->tpc, regs->tnpc); -#endif - info.si_signo = SIGTRAP; - info.si_errno = 0; - info.si_code = TRAP_BRKPT; - info.si_addr = (void __user *)regs->tpc; - info.si_trapno = 0; - force_sig_info(SIGTRAP, &info, current); -#ifdef DEBUG_SPARC_BREAKPOINT - printk ("TRAP: Returning to space: PC=%lx nPC=%lx\n", regs->tpc, regs->tnpc); -#endif -} - -extern void check_pending(int signum); - -asmlinkage long sys_getdomainname(char __user *name, int len) -{ - int nlen; - int err = -EFAULT; - - down_read(&uts_sem); - - nlen = strlen(system_utsname.domainname) + 1; - - if (nlen < len) - len = nlen; - if (len > __NEW_UTS_LEN) - goto done; - if (copy_to_user(name, system_utsname.domainname, len)) - goto done; - err = 0; -done: - up_read(&uts_sem); - return err; -} - -asmlinkage long solaris_syscall(struct pt_regs *regs) -{ - static int count; - - regs->tpc = regs->tnpc; - regs->tnpc += 4; - if (test_thread_flag(TIF_32BIT)) { - regs->tpc &= 0xffffffff; - regs->tnpc &= 0xffffffff; - } - if (++count <= 5) { - printk ("For Solaris binary emulation you need solaris module loaded\n"); - show_regs (regs); - } - send_sig(SIGSEGV, current, 1); - - return -ENOSYS; -} - -#ifndef CONFIG_SUNOS_EMUL -asmlinkage long sunos_syscall(struct pt_regs *regs) -{ - static int count; - - regs->tpc = regs->tnpc; - regs->tnpc += 4; - if (test_thread_flag(TIF_32BIT)) { - regs->tpc &= 0xffffffff; - regs->tnpc &= 0xffffffff; - } - if (++count <= 20) - printk ("SunOS binary emulation not compiled in\n"); - force_sig(SIGSEGV, current); - - return -ENOSYS; -} -#endif - -asmlinkage long sys_utrap_install(utrap_entry_t type, - utrap_handler_t new_p, - utrap_handler_t new_d, - utrap_handler_t __user *old_p, - utrap_handler_t __user *old_d) -{ - if (type < UT_INSTRUCTION_EXCEPTION || type > UT_TRAP_INSTRUCTION_31) - return -EINVAL; - if (new_p == (utrap_handler_t)(long)UTH_NOCHANGE) { - if (old_p) { - if (!current_thread_info()->utraps) { - if (put_user(NULL, old_p)) - return -EFAULT; - } else { - if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p)) - return -EFAULT; - } - } - if (old_d) { - if (put_user(NULL, old_d)) - return -EFAULT; - } - return 0; - } - if (!current_thread_info()->utraps) { - current_thread_info()->utraps = - kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), GFP_KERNEL); - if (!current_thread_info()->utraps) - return -ENOMEM; - current_thread_info()->utraps[0] = 1; - memset(current_thread_info()->utraps+1, 0, - UT_TRAP_INSTRUCTION_31*sizeof(long)); - } else { - if ((utrap_handler_t)current_thread_info()->utraps[type] != new_p && - current_thread_info()->utraps[0] > 1) { - long *p = current_thread_info()->utraps; - - current_thread_info()->utraps = - kmalloc((UT_TRAP_INSTRUCTION_31+1)*sizeof(long), - GFP_KERNEL); - if (!current_thread_info()->utraps) { - current_thread_info()->utraps = p; - return -ENOMEM; - } - p[0]--; - current_thread_info()->utraps[0] = 1; - memcpy(current_thread_info()->utraps+1, p+1, - UT_TRAP_INSTRUCTION_31*sizeof(long)); - } - } - if (old_p) { - if (put_user((utrap_handler_t)(current_thread_info()->utraps[type]), old_p)) - return -EFAULT; - } - if (old_d) { - if (put_user(NULL, old_d)) - return -EFAULT; - } - current_thread_info()->utraps[type] = (long)new_p; - - return 0; -} - -long sparc_memory_ordering(unsigned long model, struct pt_regs *regs) -{ - if (model >= 3) - return -EINVAL; - regs->tstate = (regs->tstate & ~TSTATE_MM) | (model << 14); - return 0; -} - -asmlinkage long sys_rt_sigaction(int sig, - const struct sigaction __user *act, - struct sigaction __user *oact, - void __user *restorer, - size_t sigsetsize) -{ - struct k_sigaction new_ka, old_ka; - int ret; - - /* XXX: Don't preclude handling different sized sigset_t's. */ - if (sigsetsize != sizeof(sigset_t)) - return -EINVAL; - - if (act) { - new_ka.ka_restorer = restorer; - if (copy_from_user(&new_ka.sa, act, sizeof(*act))) - return -EFAULT; - } - - ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); - - if (!ret && oact) { - if (copy_to_user(oact, &old_ka.sa, sizeof(*oact))) - return -EFAULT; - } - - return ret; -} - -/* Invoked by rtrap code to update performance counters in - * user space. - */ -asmlinkage void update_perfctrs(void) -{ - unsigned long pic, tmp; - - read_pic(pic); - tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic); - __put_user(tmp, current_thread_info()->user_cntd0); - tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32)); - __put_user(tmp, current_thread_info()->user_cntd1); - reset_pic(); -} - -asmlinkage long sys_perfctr(int opcode, unsigned long arg0, unsigned long arg1, unsigned long arg2) -{ - int err = 0; - - switch(opcode) { - case PERFCTR_ON: - current_thread_info()->pcr_reg = arg2; - current_thread_info()->user_cntd0 = (u64 __user *) arg0; - current_thread_info()->user_cntd1 = (u64 __user *) arg1; - current_thread_info()->kernel_cntd0 = - current_thread_info()->kernel_cntd1 = 0; - write_pcr(arg2); - reset_pic(); - set_thread_flag(TIF_PERFCTR); - break; - - case PERFCTR_OFF: - err = -EINVAL; - if (test_thread_flag(TIF_PERFCTR)) { - current_thread_info()->user_cntd0 = - current_thread_info()->user_cntd1 = NULL; - current_thread_info()->pcr_reg = 0; - write_pcr(0); - clear_thread_flag(TIF_PERFCTR); - err = 0; - } - break; - - case PERFCTR_READ: { - unsigned long pic, tmp; - - if (!test_thread_flag(TIF_PERFCTR)) { - err = -EINVAL; - break; - } - read_pic(pic); - tmp = (current_thread_info()->kernel_cntd0 += (unsigned int)pic); - err |= __put_user(tmp, current_thread_info()->user_cntd0); - tmp = (current_thread_info()->kernel_cntd1 += (pic >> 32)); - err |= __put_user(tmp, current_thread_info()->user_cntd1); - reset_pic(); - break; - } - - case PERFCTR_CLRPIC: - if (!test_thread_flag(TIF_PERFCTR)) { - err = -EINVAL; - break; - } - current_thread_info()->kernel_cntd0 = - current_thread_info()->kernel_cntd1 = 0; - reset_pic(); - break; - - case PERFCTR_SETPCR: { - u64 __user *user_pcr = (u64 __user *)arg0; - - if (!test_thread_flag(TIF_PERFCTR)) { - err = -EINVAL; - break; - } - err |= __get_user(current_thread_info()->pcr_reg, user_pcr); - write_pcr(current_thread_info()->pcr_reg); - current_thread_info()->kernel_cntd0 = - current_thread_info()->kernel_cntd1 = 0; - reset_pic(); - break; - } - - case PERFCTR_GETPCR: { - u64 __user *user_pcr = (u64 __user *)arg0; - - if (!test_thread_flag(TIF_PERFCTR)) { - err = -EINVAL; - break; - } - err |= __put_user(current_thread_info()->pcr_reg, user_pcr); - break; - } - - default: - err = -EINVAL; - break; - }; - return err; -} |