[PATCH 14/50] sh: task_pt_regs()
From: Al Viro <hidden>
Date: 2006-01-03 21:11:53
Also in:
lkml
Subsystem:
ptrace support, superh, the rest · Maintainers:
Oleg Nesterov, Yoshinori Sato, Rich Felker, John Paul Adrian Glaubitz, Linus Torvalds
References: [off-list ref] In-Reply-To: [off-list ref] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- arch/sh/kernel/process.c | 42 ++++++------------------------------------ arch/sh/kernel/ptrace.c | 14 ++------------ include/asm-sh/ptrace.h | 10 ++++++++++ 3 files changed, 18 insertions(+), 48 deletions(-) dbd2b9937d425d621ab6eba3c3db67638090d0b9
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index fd4f240..6a86fe3 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 *t { 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, #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 cl 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)) {
@@ -353,11 +333,7 @@ ubc_set_tracing(int asid, unsigned long 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
@@ -366,13 +342,7 @@ struct task_struct *__switch_to(struct t 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];
diff --git a/arch/sh/kernel/ptrace.c b/arch/sh/kernel/ptrace.c
index 1a8be06..3887b4f 100644
--- a/arch/sh/kernel/ptrace.c
+++ b/arch/sh/kernel/ptrace.c@@ -41,12 +41,7 @@ static inline int get_stack_long(struct { unsigned char *stack; - stack = (unsigned char *) - task->thread_info + THREAD_SIZE - sizeof(struct pt_regs) -#ifdef CONFIG_SH_DSP - - sizeof(struct pt_dspregs) -#endif - - sizeof(unsigned long); + stack = (unsigned char *)task_pt_regs(task); stack += offset; return (*((int *)stack)); }
@@ -59,12 +54,7 @@ static inline int put_stack_long(struct { unsigned char *stack; - stack = (unsigned char *) - task->thread_info + THREAD_SIZE - sizeof(struct pt_regs) -#ifdef CONFIG_SH_DSP - - sizeof(struct pt_dspregs) -#endif - - sizeof(unsigned long); + stack = (unsigned char *)task_pt_regs(task); stack += offset; *(unsigned long *) stack = data; return 0;
diff --git a/include/asm-sh/ptrace.h b/include/asm-sh/ptrace.h
index 0f75e16..85aa0f4 100644
--- a/include/asm-sh/ptrace.h
+++ b/include/asm-sh/ptrace.h@@ -91,6 +91,16 @@ struct pt_dspregs { #define instruction_pointer(regs) ((regs)->pc) extern void show_regs(struct pt_regs *); +#ifdef CONFIG_SH_DSP +#define task_pt_regs(task) \ + ((struct pt_regs *) ((unsigned long)(task)->thread_info + THREAD_SIZE \ + - sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1) +#else +#define task_pt_regs(task) \ + ((struct pt_regs *) ((unsigned long)(task)->thread_info + THREAD_SIZE \ + - sizeof(unsigned long)) - 1) +#endif + static inline unsigned long profile_pc(struct pt_regs *regs) { unsigned long pc = instruction_pointer(regs);
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0.99.9.GIT