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| author | Al Viro <viro@ftp.linux.org.uk> | 2006-01-12 01:05:52 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 09:08:54 -0800 |
| commit | 6c3559fc458e3ed171d7a8bf6a6d7eaea1e7b2e5 (patch) | |
| tree | e6c68721887f4f6fbc5aa0c2e6629f30f73f74b2 /arch/m32r/kernel/ptrace.c | |
| parent | b7f6961d83d480c8636543d1d0dbb9584b878a68 (diff) | |
| download | linux-6c3559fc458e3ed171d7a8bf6a6d7eaea1e7b2e5.tar.bz2 | |
[PATCH] m32r: task_pt_regs(), task_stack_page(), task_thread_info()
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/m32r/kernel/ptrace.c')
| -rw-r--r-- | arch/m32r/kernel/ptrace.c | 25 |
1 files changed, 4 insertions, 21 deletions
diff --git a/arch/m32r/kernel/ptrace.c b/arch/m32r/kernel/ptrace.c index 9b75caaf5cec..340a3bf59b88 100644 --- a/arch/m32r/kernel/ptrace.c +++ b/arch/m32r/kernel/ptrace.c @@ -35,23 +35,6 @@ #include <asm/mmu_context.h> /* - * Get the address of the live pt_regs for the specified task. - * These are saved onto the top kernel stack when the process - * is not running. - * - * Note: if a user thread is execve'd from kernel space, the - * kernel stack will not be empty on entry to the kernel, so - * ptracing these tasks will fail. - */ -static inline struct pt_regs * -get_user_regs(struct task_struct *task) -{ - return (struct pt_regs *) - ((unsigned long)task->thread_info + THREAD_SIZE - - sizeof(struct pt_regs)); -} - -/* * This routine will get a word off of the process kernel stack. */ static inline unsigned long int @@ -59,7 +42,7 @@ get_stack_long(struct task_struct *task, int offset) { unsigned long *stack; - stack = (unsigned long *)get_user_regs(task); + stack = (unsigned long *)task_pt_regs(task); return stack[offset]; } @@ -72,7 +55,7 @@ put_stack_long(struct task_struct *task, int offset, unsigned long data) { unsigned long *stack; - stack = (unsigned long *)get_user_regs(task); + stack = (unsigned long *)task_pt_regs(task); stack[offset] = data; return 0; @@ -208,7 +191,7 @@ static int ptrace_write_user(struct task_struct *tsk, unsigned long off, */ static int ptrace_getregs(struct task_struct *tsk, void __user *uregs) { - struct pt_regs *regs = get_user_regs(tsk); + struct pt_regs *regs = task_pt_regs(tsk); return copy_to_user(uregs, regs, sizeof(struct pt_regs)) ? -EFAULT : 0; } @@ -223,7 +206,7 @@ static int ptrace_setregs(struct task_struct *tsk, void __user *uregs) ret = -EFAULT; if (copy_from_user(&newregs, uregs, sizeof(struct pt_regs)) == 0) { - struct pt_regs *regs = get_user_regs(tsk); + struct pt_regs *regs = task_pt_regs(tsk); *regs = newregs; ret = 0; } |