Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

11 files changed, 1808 insertions, 0 deletions

diff --git a/arch/cris/kernel/Makefile b/arch/cris/kernel/Makefile
new file mode 100644
index 00000000000..1546a0e7404
--- /dev/null
+++ b/arch/cris/kernel/Makefile
@@ -0,0 +1,15 @@
+# $Id: Makefile,v 1.10 2004/05/14 10:18:12 starvik Exp $
+#
+# Makefile for the linux kernel.
+#
+
+extra-y	:= vmlinux.lds
+
+obj-y   := process.o traps.o irq.o ptrace.o setup.o \
+	   time.o sys_cris.o semaphore.o
+
+obj-$(CONFIG_MODULES)    += crisksyms.o
+obj-$(CONFIG_MODULES)	 += module.o
+
+clean:
+
diff --git a/arch/cris/kernel/crisksyms.c b/arch/cris/kernel/crisksyms.c
new file mode 100644
index 00000000000..7141bbecd7e
--- /dev/null
+++ b/arch/cris/kernel/crisksyms.c
@@ -0,0 +1,103 @@
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/user.h>
+#include <linux/elfcore.h>
+#include <linux/sched.h>
+#include <linux/in6.h>
+#include <linux/interrupt.h>
+#include <linux/smp_lock.h>
+#include <linux/pm.h>
+#include <linux/kernel.h>
+#include <linux/string.h>
+#include <linux/tty.h>
+
+#include <asm/semaphore.h>
+#include <asm/processor.h>
+#include <asm/uaccess.h>
+#include <asm/checksum.h>
+#include <asm/io.h>
+#include <asm/delay.h>
+#include <asm/irq.h>
+#include <asm/pgtable.h>
+#include <asm/fasttimer.h>
+
+extern void dump_thread(struct pt_regs *, struct user *);
+extern unsigned long get_cmos_time(void);
+extern void __Udiv(void);
+extern void __Umod(void);
+extern void __Div(void);
+extern void __Mod(void);
+extern void __ashrdi3(void);
+extern void iounmap(void *addr);
+
+/* Platform dependent support */
+EXPORT_SYMBOL(dump_thread);
+EXPORT_SYMBOL(enable_irq);
+EXPORT_SYMBOL(disable_irq);
+EXPORT_SYMBOL(kernel_thread);
+EXPORT_SYMBOL(get_cmos_time);
+EXPORT_SYMBOL(loops_per_usec);
+
+/* String functions */
+EXPORT_SYMBOL(memcmp);
+EXPORT_SYMBOL(memmove);
+EXPORT_SYMBOL(strpbrk);
+EXPORT_SYMBOL(strstr);
+EXPORT_SYMBOL(strcpy);
+EXPORT_SYMBOL(strchr);
+EXPORT_SYMBOL(strcmp);
+EXPORT_SYMBOL(strlen);
+EXPORT_SYMBOL(strcat);
+EXPORT_SYMBOL(strncat);
+EXPORT_SYMBOL(strncmp);
+EXPORT_SYMBOL(strncpy);
+
+/* Math functions */
+EXPORT_SYMBOL(__Udiv);
+EXPORT_SYMBOL(__Umod);
+EXPORT_SYMBOL(__Div);
+EXPORT_SYMBOL(__Mod);
+EXPORT_SYMBOL(__ashrdi3);
+
+/* Memory functions */
+EXPORT_SYMBOL(__ioremap);
+EXPORT_SYMBOL(iounmap);
+
+/* Semaphore functions */
+EXPORT_SYMBOL(__up);
+EXPORT_SYMBOL(__down);
+EXPORT_SYMBOL(__down_interruptible);
+EXPORT_SYMBOL(__down_trylock);
+
+/* Export shadow registers for the CPU I/O pins */
+EXPORT_SYMBOL(genconfig_shadow);
+EXPORT_SYMBOL(port_pa_data_shadow);
+EXPORT_SYMBOL(port_pa_dir_shadow);
+EXPORT_SYMBOL(port_pb_data_shadow);
+EXPORT_SYMBOL(port_pb_dir_shadow);
+EXPORT_SYMBOL(port_pb_config_shadow);
+EXPORT_SYMBOL(port_g_data_shadow);
+
+/* Userspace access functions */
+EXPORT_SYMBOL(__copy_user_zeroing);
+EXPORT_SYMBOL(__copy_user);
+
+/* Cache flush functions */
+EXPORT_SYMBOL(flush_etrax_cache);
+EXPORT_SYMBOL(prepare_rx_descriptor);
+
+#undef memcpy
+#undef memset
+extern void * memset(void *, int, __kernel_size_t);
+extern void * memcpy(void *, const void *, __kernel_size_t);
+EXPORT_SYMBOL(memcpy);
+EXPORT_SYMBOL(memset);
+
+#ifdef CONFIG_ETRAX_FAST_TIMER
+/* Fast timer functions */
+EXPORT_SYMBOL(fast_timer_list);
+EXPORT_SYMBOL(start_one_shot_timer);
+EXPORT_SYMBOL(del_fast_timer);
+EXPORT_SYMBOL(schedule_usleep);
+#endif
+
diff --git a/arch/cris/kernel/irq.c b/arch/cris/kernel/irq.c
new file mode 100644
index 00000000000..d848b940745
--- /dev/null
+++ b/arch/cris/kernel/irq.c
@@ -0,0 +1,297 @@
+/*
+ *
+ *	linux/arch/cris/kernel/irq.c
+ *
+ *      Copyright (c) 2000,2001 Axis Communications AB
+ *
+ *      Authors: Bjorn Wesen (bjornw@axis.com)
+ *
+ * This file contains the code used by various IRQ handling routines:
+ * asking for different IRQ's should be done through these routines
+ * instead of just grabbing them. Thus setups with different IRQ numbers
+ * shouldn't result in any weird surprises, and installing new handlers
+ * should be easier.
+ *
+ * Notice Linux/CRIS: these routines do not care about SMP
+ *
+ */
+
+/*
+ * IRQ's are in fact implemented a bit like signal handlers for the kernel.
+ * Naturally it's not a 1:1 relation, but there are similarities.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/ptrace.h>
+
+#include <linux/kernel_stat.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/init.h>
+#include <linux/seq_file.h>
+#include <linux/errno.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+
+/* Defined in arch specific irq.c */
+extern void arch_setup_irq(int irq);
+extern void arch_free_irq(int irq);
+
+void
+disable_irq(unsigned int irq_nr)
+{
+	unsigned long flags;
+	
+	local_save_flags(flags);
+	local_irq_disable();
+	mask_irq(irq_nr);
+	local_irq_restore(flags);
+}
+
+void
+enable_irq(unsigned int irq_nr)
+{
+	unsigned long flags;
+	local_save_flags(flags);
+	local_irq_disable();
+	unmask_irq(irq_nr);
+	local_irq_restore(flags);
+}
+
+unsigned long
+probe_irq_on()
+{
+	return 0;
+}
+
+EXPORT_SYMBOL(probe_irq_on);
+
+int
+probe_irq_off(unsigned long x)
+{
+	return 0;
+}
+
+EXPORT_SYMBOL(probe_irq_off);
+
+/*
+ * Initial irq handlers.
+ */
+
+static struct irqaction *irq_action[NR_IRQS];
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+	int i = *(loff_t *) v;
+	struct irqaction * action;
+	unsigned long flags;
+
+	if (i < NR_IRQS) {
+		local_irq_save(flags);
+		action = irq_action[i];
+		if (!action) 
+			goto skip;
+		seq_printf(p, "%2d: %10u %c %s",
+			i, kstat_this_cpu.irqs[i],
+			(action->flags & SA_INTERRUPT) ? '+' : ' ',
+			action->name);
+		for (action = action->next; action; action = action->next) {
+			seq_printf(p, ",%s %s",
+				(action->flags & SA_INTERRUPT) ? " +" : "",
+				action->name);
+		}
+		seq_putc(p, '\n');
+skip:
+		local_irq_restore(flags);
+	}
+	return 0;
+}
+
+/* called by the assembler IRQ entry functions defined in irq.h
+ * to dispatch the interrupts to registred handlers
+ * interrupts are disabled upon entry - depending on if the
+ * interrupt was registred with SA_INTERRUPT or not, interrupts
+ * are re-enabled or not.
+ */
+
+asmlinkage void do_IRQ(int irq, struct pt_regs * regs)
+{
+	struct irqaction *action;
+	int do_random, cpu;
+        int ret, retval = 0;
+
+        cpu = smp_processor_id();
+        irq_enter();
+	kstat_cpu(cpu).irqs[irq - FIRST_IRQ]++;
+	action = irq_action[irq - FIRST_IRQ];
+
+        if (action) {
+                if (!(action->flags & SA_INTERRUPT))
+                        local_irq_enable();
+                do_random = 0;
+                do {
+			ret = action->handler(irq, action->dev_id, regs);
+			if (ret == IRQ_HANDLED)
+				do_random |= action->flags;
+                        retval |= ret;
+                        action = action->next;
+                } while (action);
+
+                if (retval != 1) {
+			if (retval) {
+				printk("irq event %d: bogus retval mask %x\n",
+					irq, retval);
+			} else {
+				printk("irq %d: nobody cared\n", irq);
+			}
+		}
+
+                if (do_random & SA_SAMPLE_RANDOM)
+                        add_interrupt_randomness(irq);
+		local_irq_disable();
+        }
+        irq_exit();
+}
+
+/* this function links in a handler into the chain of handlers for the
+   given irq, and if the irq has never been registred, the appropriate
+   handler is entered into the interrupt vector
+*/
+
+int setup_irq(int irq, struct irqaction * new)
+{
+	int shared = 0;
+	struct irqaction *old, **p;
+	unsigned long flags;
+
+	p = irq_action + irq - FIRST_IRQ;
+	if ((old = *p) != NULL) {
+		/* Can't share interrupts unless both agree to */
+		if (!(old->flags & new->flags & SA_SHIRQ))
+			return -EBUSY;
+
+		/* Can't share interrupts unless both are same type */
+		if ((old->flags ^ new->flags) & SA_INTERRUPT)
+			return -EBUSY;
+
+		/* add new interrupt at end of irq queue */
+		do {
+			p = &old->next;
+			old = *p;
+		} while (old);
+		shared = 1;
+	}
+
+	if (new->flags & SA_SAMPLE_RANDOM)
+		rand_initialize_irq(irq);
+
+	local_save_flags(flags);
+	local_irq_disable();
+	*p = new;
+
+	if (!shared) {
+		/* if the irq wasn't registred before, enter it into the vector table
+		   and unmask it physically 
+		*/
+		arch_setup_irq(irq);
+		unmask_irq(irq);
+	}
+	
+	local_irq_restore(flags);
+	return 0;
+}
+
+/* this function is called by a driver to register an irq handler
+   Valid flags:
+   SA_INTERRUPT -> it's a fast interrupt, handler called with irq disabled and
+                   no signal checking etc is performed upon exit
+   SA_SHIRQ -> the interrupt can be shared between different handlers, the handler
+                is required to check if the irq was "aimed" at it explicitely
+   SA_RANDOM -> the interrupt will add to the random generators entropy
+*/
+
+int request_irq(unsigned int irq, 
+		irqreturn_t (*handler)(int, void *, struct pt_regs *),
+		unsigned long irqflags, 
+		const char * devname,
+		void *dev_id)
+{
+	int retval;
+	struct irqaction * action;
+
+	if(!handler)
+		return -EINVAL;
+
+	/* allocate and fill in a handler structure and setup the irq */
+
+	action = (struct irqaction *)kmalloc(sizeof(struct irqaction), GFP_KERNEL);
+	if (!action)
+		return -ENOMEM;
+
+	action->handler = handler;
+	action->flags = irqflags;
+	cpus_clear(action->mask);
+	action->name = devname;
+	action->next = NULL;
+	action->dev_id = dev_id;
+
+	retval = setup_irq(irq, action);
+
+	if (retval)
+		kfree(action);
+	return retval;
+}
+
+EXPORT_SYMBOL(request_irq);
+		
+void free_irq(unsigned int irq, void *dev_id)
+{
+	struct irqaction * action, **p;
+	unsigned long flags;
+
+	if (irq >= NR_IRQS) {
+		printk("Trying to free IRQ%d\n",irq);
+		return;
+	}
+	for (p = irq - FIRST_IRQ + irq_action; (action = *p) != NULL; p = &action->next) {
+		if (action->dev_id != dev_id)
+			continue;
+
+		/* Found it - now free it */
+		local_save_flags(flags);
+		local_irq_disable();
+		*p = action->next;
+		if (!irq_action[irq - FIRST_IRQ]) {
+			mask_irq(irq);
+			arch_free_irq(irq);
+		}
+		local_irq_restore(flags);
+		kfree(action);
+		return;
+	}
+	printk("Trying to free free IRQ%d\n",irq);
+}
+
+EXPORT_SYMBOL(free_irq);
+
+void weird_irq(void)
+{
+	local_irq_disable();
+	printk("weird irq\n");
+	while(1);
+}
+
+#if defined(CONFIG_PROC_FS) && defined(CONFIG_SYSCTL)
+/* Used by other archs to show/control IRQ steering during SMP */
+void __init
+init_irq_proc(void)
+{
+}
+#endif
diff --git a/arch/cris/kernel/module.c b/arch/cris/kernel/module.c
new file mode 100644
index 00000000000..f1d3e784f30
--- /dev/null
+++ b/arch/cris/kernel/module.c
@@ -0,0 +1,121 @@
+/*  Kernel module help for i386.
+    Copyright (C) 2001 Rusty Russell.
+
+    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.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+#include <linux/moduleloader.h>
+#include <linux/elf.h>
+#include <linux/vmalloc.h>
+#include <linux/fs.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+#if 0
+#define DEBUGP printk
+#else
+#define DEBUGP(fmt , ...)
+#endif
+
+void *module_alloc(unsigned long size)
+{
+	if (size == 0)
+		return NULL;
+	return vmalloc(size);
+}
+
+
+/* Free memory returned from module_alloc */
+void module_free(struct module *mod, void *module_region)
+{
+	vfree(module_region);
+	/* FIXME: If module_region == mod->init_region, trim exception
+           table entries. */
+}
+
+/* We don't need anything special. */
+int module_frob_arch_sections(Elf_Ehdr *hdr,
+			      Elf_Shdr *sechdrs,
+			      char *secstrings,
+			      struct module *mod)
+{
+	return 0;
+}
+
+int apply_relocate(Elf32_Shdr *sechdrs,
+		   const char *strtab,
+		   unsigned int symindex,
+		   unsigned int relsec,
+		   struct module *me)
+{
+	unsigned int i;
+	Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
+	Elf32_Sym *sym;
+	uint32_t *location;
+
+	DEBUGP("Applying relocate section %u to %u\n", relsec,
+	       sechdrs[relsec].sh_info);
+	for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
+		/* This is where to make the change */
+		location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_offset
+			+ rel[i].r_offset;
+		/* This is the symbol it is referring to.  Note that all
+		   undefined symbols have been resolved.  */
+		sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
+			+ ELF32_R_SYM(rel[i].r_info);
+
+                /* We add the value into the location given */
+                *location += sym->st_value;
+	}
+	return 0;
+}
+
+int apply_relocate_add(Elf32_Shdr *sechdrs,
+		       const char *strtab,
+		       unsigned int symindex,
+		       unsigned int relsec,
+		       struct module *me)
+{
+  	unsigned int i;
+	Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr;
+
+	DEBUGP ("Applying relocate section %u to %u\n", relsec,
+		sechdrs[relsec].sh_info);
+
+	for (i = 0; i < sechdrs[relsec].sh_size / sizeof (*rela); i++) {
+		/* This is where to make the change */
+		uint32_t *loc
+			= ((void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+			   + rela[i].r_offset);
+		/* This is the symbol it is referring to.  Note that all
+		   undefined symbols have been resolved.  */
+		Elf32_Sym *sym
+			= ((Elf32_Sym *)sechdrs[symindex].sh_addr
+			   + ELF32_R_SYM (rela[i].r_info));
+		*loc = sym->st_value + rela[i].r_addend;
+	}
+
+	return 0;
+}
+
+int module_finalize(const Elf_Ehdr *hdr,
+		    const Elf_Shdr *sechdrs,
+		    struct module *me)
+{
+ 	return 0;
+}
+
+void module_arch_cleanup(struct module *mod)
+{
+}
diff --git a/arch/cris/kernel/process.c b/arch/cris/kernel/process.c
new file mode 100644
index 00000000000..9f7cad7c784
--- /dev/null
+++ b/arch/cris/kernel/process.c
@@ -0,0 +1,280 @@
+/* $Id: process.c,v 1.17 2004/04/05 13:53:48 starvik Exp $
+ * 
+ *  linux/arch/cris/kernel/process.c
+ *
+ *  Copyright (C) 1995  Linus Torvalds
+ *  Copyright (C) 2000-2002  Axis Communications AB
+ *
+ *  Authors:   Bjorn Wesen (bjornw@axis.com)
+ *
+ *  $Log: process.c,v $
+ *  Revision 1.17  2004/04/05 13:53:48  starvik
+ *  Merge of Linux 2.6.5
+ *
+ *  Revision 1.16  2003/10/27 08:04:33  starvik
+ *  Merge of Linux 2.6.0-test9
+ *
+ *  Revision 1.15  2003/09/11 07:29:52  starvik
+ *  Merge of Linux 2.6.0-test5
+ *
+ *  Revision 1.14  2003/06/10 10:21:12  johana
+ *  Moved thread_saved_pc() from arch/cris/kernel/process.c to
+ *  subarch specific process.c. arch-v32 has an erp, no irp.
+ *
+ *  Revision 1.13  2003/04/09 05:20:47  starvik
+ *  Merge of Linux 2.5.67
+ *
+ *  Revision 1.12  2002/12/11 15:41:11  starvik
+ *  Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/kernel
+ *
+ *  Revision 1.11  2002/12/10 09:00:10  starvik
+ *  Merge of Linux 2.5.51
+ *
+ *  Revision 1.10  2002/11/27 08:42:34  starvik
+ *  Argument to user_regs() is thread_info*
+ *
+ *  Revision 1.9  2002/11/26 09:44:21  starvik
+ *  New threads exits through ret_from_fork (necessary for preemptive scheduling)
+ *
+ *  Revision 1.8  2002/11/19 14:35:24  starvik
+ *  Changes from linux 2.4
+ *  Changed struct initializer syntax to the currently prefered notation
+ *
+ *  Revision 1.7  2002/11/18 07:39:42  starvik
+ *  thread_saved_pc moved here from processor.h
+ *
+ *  Revision 1.6  2002/11/14 06:51:27  starvik
+ *  Made cpu_idle more similar with other archs
+ *  init_task_union -> init_thread_union
+ *  Updated for new interrupt macros
+ *  sys_clone and do_fork have a new argument, user_tid
+ *
+ *  Revision 1.5  2002/11/05 06:45:11  starvik
+ *  Merge of Linux 2.5.45
+ *
+ *  Revision 1.4  2002/02/05 15:37:44  bjornw
+ *  Need init_task.h
+ *
+ *  Revision 1.3  2002/01/21 15:22:49  bjornw
+ *  current->counter is gone
+ *
+ *  Revision 1.22  2001/11/13 09:40:43  orjanf
+ *  Added dump_fpu (needed for core dumps).
+ *
+ *  Revision 1.21  2001/11/12 18:26:21  pkj
+ *  Fixed compiler warnings.
+ *
+ *  Revision 1.20  2001/10/03 08:21:39  jonashg
+ *  cause_of_death does not exist if CONFIG_SVINTO_SIM is defined.
+ *
+ *  Revision 1.19  2001/09/26 11:52:54  bjornw
+ *  INIT_MMAP is gone in 2.4.10
+ *
+ *  Revision 1.18  2001/08/21 21:43:51  hp
+ *  Move last watchdog fix inside #ifdef CONFIG_ETRAX_WATCHDOG
+ *
+ *  Revision 1.17  2001/08/21 13:48:01  jonashg
+ *  Added fix by HP to avoid oops when doing a hard_reset_now.
+ *
+ *  Revision 1.16  2001/06/21 02:00:40  hp
+ *  	* entry.S: Include asm/unistd.h.
+ *  	(_sys_call_table): Use section .rodata, not .data.
+ *  	(_kernel_thread): Move from...
+ *  	* process.c: ... here.
+ *  	* entryoffsets.c (VAL): Break out from...
+ *  	(OF): Use VAL.
+ *  	(LCLONE_VM): New asmified value from CLONE_VM.
+ *
+ *  Revision 1.15  2001/06/20 16:31:57  hp
+ *  Add comments to describe empty functions according to review.
+ *
+ *  Revision 1.14  2001/05/29 11:27:59  markusl
+ *  Fixed so that hard_reset_now will do reset even if watchdog wasn't enabled
+ *
+ *  Revision 1.13  2001/03/20 19:44:06  bjornw
+ *  Use the 7th syscall argument for regs instead of current_regs
+ *
+ */
+
+/*
+ * This file handles the architecture-dependent parts of process handling..
+ */
+
+#include <asm/atomic.h>
+#include <asm/pgtable.h>
+#include <asm/uaccess.h>
+#include <asm/irq.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+#include <linux/fs_struct.h>
+#include <linux/init_task.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/user.h>
+#include <linux/elfcore.h>
+#include <linux/mqueue.h>
+
+//#define DEBUG
+
+/*
+ * Initial task structure. Make this a per-architecture thing,
+ * because different architectures tend to have different
+ * alignment requirements and potentially different initial
+ * setup.
+ */
+
+static struct fs_struct init_fs = INIT_FS;
+static struct files_struct init_files = INIT_FILES;
+static struct signal_struct init_signals = INIT_SIGNALS(init_signals);
+static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand);
+struct mm_struct init_mm = INIT_MM(init_mm);
+
+EXPORT_SYMBOL(init_mm);
+
+/*
+ * Initial thread structure.
+ *
+ * We need to make sure that this is 8192-byte 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 
+	__attribute__((__section__(".data.init_task"))) =
+		{ INIT_THREAD_INFO(init_task) };
+
+/*
+ * 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);
+
+/*
+ * The hlt_counter, disable_hlt and enable_hlt is just here as a hook if
+ * there would ever be a halt sequence (for power save when idle) with
+ * some largish delay when halting or resuming *and* a driver that can't
+ * afford that delay.  The hlt_counter would then be checked before
+ * executing the halt sequence, and the driver marks the unhaltable
+ * region by enable_hlt/disable_hlt.
+ */
+
+static int hlt_counter=0;
+
+void disable_hlt(void)
+{
+	hlt_counter++;
+}
+
+EXPORT_SYMBOL(disable_hlt);
+
+void enable_hlt(void)
+{
+	hlt_counter--;
+}
+
+EXPORT_SYMBOL(enable_hlt);
+ 
+/*
+ * The following aren't currently used.
+ */
+void (*pm_idle)(void);
+
+extern void default_idle(void);
+
+/*
+ * 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()) {
+			void (*idle)(void) = pm_idle;
+
+			if (!idle)
+				idle = default_idle;
+
+			idle();
+		}
+		schedule();
+	}
+
+}
+
+void hard_reset_now (void);
+
+void machine_restart(void)
+{
+	hard_reset_now();
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+/*
+ * Similar to machine_power_off, but don't shut off power.  Add code
+ * here to freeze the system for e.g. post-mortem debug purpose when
+ * possible.  This halt has nothing to do with the idle halt.
+ */
+
+void machine_halt(void)
+{
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+/* If or when software power-off is implemented, add code here.  */
+
+void machine_power_off(void)
+{
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+/*
+ * When a process does an "exec", machine state like FPU and debug
+ * registers need to be reset.  This is a hook function for that.
+ * Currently we don't have any such state to reset, so this is empty.
+ */
+
+void flush_thread(void)
+{
+}
+
+/*
+ * fill in the user structure for a core dump..
+ */
+void dump_thread(struct pt_regs * regs, struct user * dump)
+{
+#if 0
+	int i;
+
+	/* changed the size calculations - should hopefully work better. lbt */
+	dump->magic = CMAGIC;
+	dump->start_code = 0;
+	dump->start_stack = regs->esp & ~(PAGE_SIZE - 1);
+	dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT;
+	dump->u_dsize = ((unsigned long) (current->mm->brk + (PAGE_SIZE-1))) >> PAGE_SHIFT;
+	dump->u_dsize -= dump->u_tsize;
+	dump->u_ssize = 0;
+	for (i = 0; i < 8; i++)
+		dump->u_debugreg[i] = current->debugreg[i];  
+
+	if (dump->start_stack < TASK_SIZE)
+		dump->u_ssize = ((unsigned long) (TASK_SIZE - dump->start_stack)) >> PAGE_SHIFT;
+
+	dump->regs = *regs;
+
+	dump->u_fpvalid = dump_fpu (regs, &dump->i387);
+#endif 
+}
+
+/* Fill in the fpu structure for a core dump. */
+int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
+{
+        return 0;
+}
diff --git a/arch/cris/kernel/ptrace.c b/arch/cris/kernel/ptrace.c
new file mode 100644
index 00000000000..e85a2fdd9ac
--- /dev/null
+++ b/arch/cris/kernel/ptrace.c
@@ -0,0 +1,119 @@
+/*
+ *  linux/arch/cris/kernel/ptrace.c
+ *
+ * Parts taken from the m68k port.
+ * 
+ * Copyright (c) 2000, 2001, 2002 Axis Communications AB
+ *
+ * Authors:   Bjorn Wesen
+ *
+ * $Log: ptrace.c,v $
+ * Revision 1.9  2003/07/04 12:56:11  tobiasa
+ * Moved arch-specific code to arch-specific files.
+ *
+ * Revision 1.8  2003/04/09 05:20:47  starvik
+ * Merge of Linux 2.5.67
+ *
+ * Revision 1.7  2002/11/27 08:42:34  starvik
+ * Argument to user_regs() is thread_info*
+ *
+ * Revision 1.6  2002/11/20 11:56:11  starvik
+ * Merge of Linux 2.5.48
+ *
+ * Revision 1.5  2002/11/18 07:41:19  starvik
+ * Removed warning
+ *
+ * Revision 1.4  2002/11/11 12:47:28  starvik
+ * SYSCALL_TRACE has been moved to thread flags
+ *
+ * Revision 1.3  2002/02/05 15:37:18  bjornw
+ * * Add do_notify_resume (replaces do_signal in the callchain)
+ * * syscall_trace is now do_syscall_trace
+ * * current->ptrace flag PT_TRACESYS -> PT_SYSCALLTRACE
+ * * Keep track of the current->work.syscall_trace counter
+ *
+ * Revision 1.2  2001/12/18 13:35:20  bjornw
+ * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
+ *
+ * Revision 1.8  2001/11/12 18:26:21  pkj
+ * Fixed compiler warnings.
+ *
+ * Revision 1.7  2001/09/26 11:53:49  bjornw
+ * PTRACE_DETACH works more simple in 2.4.10
+ *
+ * Revision 1.6  2001/07/25 16:08:47  bjornw
+ * PTRACE_ATTACH bulk moved into arch-independent code in 2.4.7
+ *
+ * Revision 1.5  2001/03/26 14:24:28  orjanf
+ * * Changed loop condition.
+ * * Added comment documenting non-standard ptrace behaviour.
+ *
+ * Revision 1.4  2001/03/20 19:44:41  bjornw
+ * Use the user_regs macro instead of thread.esp0
+ *
+ * Revision 1.3  2000/12/18 23:45:25  bjornw
+ * Linux/CRIS first version
+ *
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/smp_lock.h>
+#include <linux/errno.h>
+#include <linux/ptrace.h>
+#include <linux/user.h>
+
+#include <asm/uaccess.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/system.h>
+#include <asm/processor.h>
+
+/*
+ * Get contents of register REGNO in task TASK.
+ */
+inline long get_reg(struct task_struct *task, unsigned int regno)
+{
+	/* USP is a special case, it's not in the pt_regs struct but
+	 * in the tasks thread struct
+	 */
+
+	if (regno == PT_USP)
+		return task->thread.usp;
+	else if (regno < PT_MAX)
+		return ((unsigned long *)user_regs(task->thread_info))[regno];
+	else
+		return 0;
+}
+
+/*
+ * Write contents of register REGNO in task TASK.
+ */
+inline int put_reg(struct task_struct *task, unsigned int regno,
+			  unsigned long data)
+{
+	if (regno == PT_USP)
+		task->thread.usp = data;
+	else if (regno < PT_MAX)
+		((unsigned long *)user_regs(task->thread_info))[regno] = data;
+	else
+		return -1;
+	return 0;
+}
+
+/* notification of userspace execution resumption
+ * - triggered by current->work.notify_resume
+ */
+extern int do_signal(int canrestart, sigset_t *oldset, struct pt_regs *regs);
+
+
+void do_notify_resume(int canrestart, sigset_t *oldset, struct pt_regs *regs, 
+		      __u32 thread_info_flags  )
+{
+	/* deal with pending signal delivery */
+	if (thread_info_flags & _TIF_SIGPENDING)
+		do_signal(canrestart,oldset,regs);
+}
diff --git a/arch/cris/kernel/semaphore.c b/arch/cris/kernel/semaphore.c
new file mode 100644
index 00000000000..b884263d3cd
--- /dev/null
+++ b/arch/cris/kernel/semaphore.c
@@ -0,0 +1,130 @@
+/*
+ *  Generic semaphore code. Buyer beware. Do your own
+ * specific changes in <asm/semaphore-helper.h>
+ */
+
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <asm/semaphore-helper.h>
+
+/*
+ * Semaphores are implemented using a two-way counter:
+ * The "count" variable is decremented for each process
+ * that tries to sleep, while the "waking" variable is
+ * incremented when the "up()" code goes to wake up waiting
+ * processes.
+ *
+ * Notably, the inline "up()" and "down()" functions can
+ * efficiently test if they need to do any extra work (up
+ * needs to do something only if count was negative before
+ * the increment operation.
+ *
+ * waking_non_zero() (from asm/semaphore.h) must execute
+ * atomically.
+ *
+ * When __up() is called, the count was negative before
+ * incrementing it, and we need to wake up somebody.
+ *
+ * This routine adds one to the count of processes that need to
+ * wake up and exit.  ALL waiting processes actually wake up but
+ * only the one that gets to the "waking" field first will gate
+ * through and acquire the semaphore.  The others will go back
+ * to sleep.
+ *
+ * Note that these functions are only called when there is
+ * contention on the lock, and as such all this is the
+ * "non-critical" part of the whole semaphore business. The
+ * critical part is the inline stuff in <asm/semaphore.h>
+ * where we want to avoid any extra jumps and calls.
+ */
+void __up(struct semaphore *sem)
+{
+	wake_one_more(sem);
+	wake_up(&sem->wait);
+}
+
+/*
+ * Perform the "down" function.  Return zero for semaphore acquired,
+ * return negative for signalled out of the function.
+ *
+ * If called from __down, the return is ignored and the wait loop is
+ * not interruptible.  This means that a task waiting on a semaphore
+ * using "down()" cannot be killed until someone does an "up()" on
+ * the semaphore.
+ *
+ * If called from __down_interruptible, the return value gets checked
+ * upon return.  If the return value is negative then the task continues
+ * with the negative value in the return register (it can be tested by
+ * the caller).
+ *
+ * Either form may be used in conjunction with "up()".
+ *
+ */
+
+#define DOWN_VAR				\
+	struct task_struct *tsk = current;	\
+	wait_queue_t wait;			\
+	init_waitqueue_entry(&wait, tsk);
+
+#define DOWN_HEAD(task_state)						\
+									\
+									\
+	tsk->state = (task_state);					\
+	add_wait_queue(&sem->wait, &wait);				\
+									\
+	/*								\
+	 * Ok, we're set up.  sem->count is known to be less than zero	\
+	 * so we must wait.						\
+	 *								\
+	 * We can let go the lock for purposes of waiting.		\
+	 * We re-acquire it after awaking so as to protect		\
+	 * all semaphore operations.					\
+	 *								\
+	 * If "up()" is called before we call waking_non_zero() then	\
+	 * we will catch it right away.  If it is called later then	\
+	 * we will have to go through a wakeup cycle to catch it.	\
+	 *								\
+	 * Multiple waiters contend for the semaphore lock to see	\
+	 * who gets to gate through and who has to wait some more.	\
+	 */								\
+	for (;;) {
+
+#define DOWN_TAIL(task_state)			\
+		tsk->state = (task_state);	\
+	}					\
+	tsk->state = TASK_RUNNING;		\
+	remove_wait_queue(&sem->wait, &wait);
+
+void __sched __down(struct semaphore * sem)
+{
+	DOWN_VAR
+	DOWN_HEAD(TASK_UNINTERRUPTIBLE)
+	if (waking_non_zero(sem))
+		break;
+	schedule();
+	DOWN_TAIL(TASK_UNINTERRUPTIBLE)
+}
+
+int __sched __down_interruptible(struct semaphore * sem)
+{
+	int ret = 0;
+	DOWN_VAR
+	DOWN_HEAD(TASK_INTERRUPTIBLE)
+
+	ret = waking_non_zero_interruptible(sem, tsk);
+	if (ret)
+	{
+		if (ret == 1)
+			/* ret != 0 only if we get interrupted -arca */
+			ret = 0;