X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=arch%2Fsh%2Fkernel%2Fprocess.c;h=3d024590c24e8f34c185ecd49a13b5ec547ba6ae;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=7d45ea0acd09a3998b7b4cbe58c1499da2131ac2;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 7d45ea0ac..3d024590c 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -1,4 +1,4 @@
-/* $Id: process.c,v 1.26 2004/02/06 14:14:14 kkojima Exp $
+/* $Id: process.c,v 1.28 2004/05/05 16:54:23 lethal Exp $
  *
  *  linux/arch/sh/kernel/process.c
  *
@@ -25,6 +25,11 @@
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
 #include <asm/elf.h>
+#if defined(CONFIG_SH_HS7751RVOIP)
+#include <asm/hs7751rvoip/hs7751rvoip.h>
+#elif defined(CONFIG_SH_RTS7751R2D)
+#include <asm/rts7751r2d/rts7751r2d.h>
+#endif
 
 static int hlt_counter=0;
 
@@ -50,14 +55,20 @@ void default_idle(void)
 {
 	/* endless idle loop with no priority at all */
 	while (1) {
-		while (!need_resched())
-			cpu_relax();
+		if (hlt_counter) {
+			while (1)
+				if (need_resched())
+					break;
+		} else {
+			while (!need_resched())
+				cpu_sleep();
+		}
 
 		schedule();
 	}
 }
 
-void cpu_idle(void *unused)
+void cpu_idle(void)
 {
 	default_idle();
 }
@@ -73,14 +84,30 @@ EXPORT_SYMBOL(machine_restart);
 
 void machine_halt(void)
 {
+#if defined(CONFIG_SH_HS7751RVOIP)
+	unsigned short value;
+
+	value = ctrl_inw(PA_OUTPORTR);
+	ctrl_outw((value & 0xffdf), PA_OUTPORTR);
+#elif defined(CONFIG_SH_RTS7751R2D)
+	ctrl_outw(0x0001, PA_POWOFF);
+#endif
 	while (1)
-		cpu_relax();
+		cpu_sleep();
 }
 
 EXPORT_SYMBOL(machine_halt);
 
 void machine_power_off(void)
 {
+#if defined(CONFIG_SH_HS7751RVOIP)
+	unsigned short value;
+
+	value = ctrl_inw(PA_OUTPORTR);
+	ctrl_outw((value & 0xffdf), PA_OUTPORTR);
+#elif defined(CONFIG_SH_RTS7751R2D)
+	ctrl_outw(0x0001, PA_POWOFF);
+#endif
 }
 
 EXPORT_SYMBOL(machine_power_off);
@@ -172,7 +199,7 @@ void exit_thread(void)
 
 void flush_thread(void)
 {
-#if defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_SH_FPU)
 	struct task_struct *tsk = current;
 	struct pt_regs *regs = (struct pt_regs *)
 				((unsigned long)tsk->thread_info
@@ -181,7 +208,7 @@ void flush_thread(void)
 
 	/* Forget lazy FPU state */
 	clear_fpu(tsk, regs);
-	tsk->used_math = 0;
+	clear_used_math();
 #endif
 }
 
@@ -195,10 +222,10 @@ int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpu)
 {
 	int fpvalid = 0;
 
-#if defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_SH_FPU)
 	struct task_struct *tsk = current;
 
-	fpvalid = tsk->used_math;
+	fpvalid = !!tsk_used_math(tsk);
 	if (fpvalid) {
 		unlazy_fpu(tsk, regs);
 		memcpy(fpu, &tsk->thread.fpu.hard, sizeof(*fpu));
@@ -232,8 +259,8 @@ dump_task_fpu (struct task_struct *tsk, elf_fpregset_t *fpu)
 {
 	int fpvalid = 0;
 
-#if defined(CONFIG_CPU_SH4)
-	fpvalid = tsk->used_math;
+#if defined(CONFIG_SH_FPU)
+	fpvalid = !!tsk_used_math(tsk);
 	if (fpvalid) {
 		struct pt_regs *regs = (struct pt_regs *)
 					((unsigned long)tsk->thread_info
@@ -254,12 +281,12 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 		struct task_struct *p, struct pt_regs *regs)
 {
 	struct pt_regs *childregs;
-#if defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_SH_FPU)
 	struct task_struct *tsk = current;
 
 	unlazy_fpu(tsk, regs);
 	p->thread.fpu = tsk->thread.fpu;
-	p->used_math = tsk->used_math;
+	copy_to_stopped_child_used_math(p);
 #endif
 
 	childregs = ((struct pt_regs *)
@@ -279,7 +306,6 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
 		childregs->gbr = childregs->regs[0];
 	}
 	childregs->regs[0] = 0; /* Set return value for child */
-	p->set_child_tid = p->clear_child_tid = NULL;
 
 	p->thread.sp = (unsigned long) childregs;
 	p->thread.pc = (unsigned long) ret_from_fork;
@@ -336,7 +362,7 @@ ubc_set_tracing(int asid, unsigned long pc)
  */
 struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *next)
 {
-#if defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_SH_FPU)
 	struct pt_regs *regs = (struct pt_regs *)
 				((unsigned long)prev->thread_info
 				 + THREAD_SIZE - sizeof(struct pt_regs)
@@ -413,7 +439,7 @@ asmlinkage int sys_clone(unsigned long clone_flags, unsigned long newsp,
 {
 	if (!newsp)
 		newsp = regs.regs[15];
-	return do_fork(clone_flags & ~CLONE_IDLETASK, newsp, &regs, 0,
+	return do_fork(clone_flags, newsp, &regs, 0,
 			(int __user *)parent_tidptr, (int __user *)child_tidptr);
 }
 
@@ -454,19 +480,16 @@ asmlinkage int sys_execve(char *ufilename, char **uargv,
 			  (char __user * __user *)uargv,
 			  (char __user * __user *)uenvp,
 			  &regs);
-	if (error == 0)
+	if (error == 0) {
+		task_lock(current);
 		current->ptrace &= ~PT_DTRACE;
+		task_unlock(current);
+	}
 	putname(filename);
 out:
 	return error;
 }
 
-/*
- * These bracket the sleeping functions..
- */
-#define first_sched	((unsigned long) scheduling_functions_start_here)
-#define last_sched	((unsigned long) scheduling_functions_end_here)
-
 unsigned long get_wchan(struct task_struct *p)
 {
 	unsigned long schedule_frame;
@@ -479,7 +502,7 @@ unsigned long get_wchan(struct task_struct *p)
 	 * The same comment as on the Alpha applies here, too ...
 	 */
 	pc = thread_saved_pc(p);
-	if (pc >= first_sched && pc < last_sched) {
+	if (in_sched_functions(pc)) {
 		schedule_frame = ((unsigned long *)(long)p->thread.sp)[1];
 		return (unsigned long)((unsigned long *)schedule_frame)[1];
 	}