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authorAl Viro <viro@ftp.linux.org.uk>2006-01-12 01:05:44 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-01-12 09:08:52 -0800
commit3cf0f4ece9f1680e54b154b1e38baaf6ace20a62 (patch)
treeeaebb77428101f5093aa7c0fa8cbc008c9d61ba2 /arch/sh/kernel/process.c
parent26ecbdea4bf46b0165db4aafd8e4981b4db53936 (diff)
[PATCH] sh: task_pt_regs()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/sh/kernel/process.c')
-rw-r--r--arch/sh/kernel/process.c42
1 files changed, 6 insertions, 36 deletions
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index 8a2bea34ddd..8c0060ce6c0 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -191,13 +191,8 @@ void flush_thread(void)
{
#if defined(CONFIG_SH_FPU)
struct task_struct *tsk = current;
- struct pt_regs *regs = (struct pt_regs *)
- ((unsigned long)tsk->thread_info
- + THREAD_SIZE - sizeof(struct pt_regs)
- - sizeof(unsigned long));
-
/* Forget lazy FPU state */
- clear_fpu(tsk, regs);
+ clear_fpu(tsk, task_pt_regs(tsk));
clear_used_math();
#endif
}
@@ -232,13 +227,7 @@ int dump_task_regs(struct task_struct *tsk, elf_gregset_t *regs)
{
struct pt_regs ptregs;
- ptregs = *(struct pt_regs *)
- ((unsigned long)tsk->thread_info + THREAD_SIZE
- - sizeof(struct pt_regs)
-#ifdef CONFIG_SH_DSP
- - sizeof(struct pt_dspregs)
-#endif
- - sizeof(unsigned long));
+ ptregs = *task_pt_regs(tsk);
elf_core_copy_regs(regs, &ptregs);
return 1;
@@ -252,11 +241,7 @@ dump_task_fpu (struct task_struct *tsk, elf_fpregset_t *fpu)
#if defined(CONFIG_SH_FPU)
fpvalid = !!tsk_used_math(tsk);
if (fpvalid) {
- struct pt_regs *regs = (struct pt_regs *)
- ((unsigned long)tsk->thread_info
- + THREAD_SIZE - sizeof(struct pt_regs)
- - sizeof(unsigned long));
- unlazy_fpu(tsk, regs);
+ unlazy_fpu(tsk, task_pt_regs(tsk));
memcpy(fpu, &tsk->thread.fpu.hard, sizeof(*fpu));
}
#endif
@@ -279,12 +264,7 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long usp,
copy_to_stopped_child_used_math(p);
#endif
- childregs = ((struct pt_regs *)
- (THREAD_SIZE + (unsigned long) p->thread_info)
-#ifdef CONFIG_SH_DSP
- - sizeof(struct pt_dspregs)
-#endif
- - sizeof(unsigned long)) - 1;
+ childregs = task_pt_regs(p);
*childregs = *regs;
if (user_mode(regs)) {
@@ -333,11 +313,7 @@ ubc_set_tracing(int asid, unsigned long pc)
struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *next)
{
#if defined(CONFIG_SH_FPU)
- struct pt_regs *regs = (struct pt_regs *)
- ((unsigned long)prev->thread_info
- + THREAD_SIZE - sizeof(struct pt_regs)
- - sizeof(unsigned long));
- unlazy_fpu(prev, regs);
+ unlazy_fpu(prev, task_pt_regs(prev));
#endif
#ifdef CONFIG_PREEMPT
@@ -346,13 +322,7 @@ struct task_struct *__switch_to(struct task_struct *prev, struct task_struct *ne
struct pt_regs *regs;
local_irq_save(flags);
- regs = (struct pt_regs *)
- ((unsigned long)prev->thread_info
- + THREAD_SIZE - sizeof(struct pt_regs)
-#ifdef CONFIG_SH_DSP
- - sizeof(struct pt_dspregs)
-#endif
- - sizeof(unsigned long));
+ regs = task_pt_regs(prev);
if (user_mode(regs) && regs->regs[15] >= 0xc0000000) {
int offset = (int)regs->regs[15];