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| author | Al Viro <viro@ftp.linux.org.uk> | 2006-01-12 01:05:59 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-12 09:08:57 -0800 |
| commit | 02ef691f6ce4097da5617ebf59493487cb2b4f82 (patch) | |
| tree | d8622de19098caeed92142a5edfe7d0df04f98a4 /arch/arm26 | |
| parent | 697102cda5c5e778d0bc3b4b9f8d935f4fe64125 (diff) | |
| download | blackbird-op-linux-02ef691f6ce4097da5617ebf59493487cb2b4f82.tar.gz blackbird-op-linux-02ef691f6ce4097da5617ebf59493487cb2b4f82.zip | |
[PATCH] arm26: 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/arm26')
| -rw-r--r-- | arch/arm26/kernel/process.c | 3 | ||||
| -rw-r--r-- | arch/arm26/kernel/ptrace.c | 25 |
2 files changed, 6 insertions, 22 deletions
diff --git a/arch/arm26/kernel/process.c b/arch/arm26/kernel/process.c index 159f84a86321..386305659171 100644 --- a/arch/arm26/kernel/process.c +++ b/arch/arm26/kernel/process.c @@ -278,9 +278,8 @@ copy_thread(int nr, unsigned long clone_flags, unsigned long stack_start, unsigned long unused, struct task_struct *p, struct pt_regs *regs) { struct thread_info *thread = task_thread_info(p); - struct pt_regs *childregs; + struct pt_regs *childregs = task_pt_regs(p); - childregs = __get_user_regs(thread); *childregs = *regs; childregs->ARM_r0 = 0; childregs->ARM_sp = stack_start; diff --git a/arch/arm26/kernel/ptrace.c b/arch/arm26/kernel/ptrace.c index 56afe1f6396a..3c3371d4683e 100644 --- a/arch/arm26/kernel/ptrace.c +++ b/arch/arm26/kernel/ptrace.c @@ -40,21 +40,6 @@ #define BREAKINST_ARM 0xef9f0001 /* - * 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 __get_user_regs(task->thread_info); -} - -/* * this routine will get a word off of the processes privileged stack. * the offset is how far from the base addr as stored in the THREAD. * this routine assumes that all the privileged stacks are in our @@ -62,7 +47,7 @@ get_user_regs(struct task_struct *task) */ static inline long get_user_reg(struct task_struct *task, int offset) { - return get_user_regs(task)->uregs[offset]; + return task_pt_regs(task)->uregs[offset]; } /* @@ -74,7 +59,7 @@ static inline long get_user_reg(struct task_struct *task, int offset) static inline int put_user_reg(struct task_struct *task, int offset, long data) { - struct pt_regs newregs, *regs = get_user_regs(task); + struct pt_regs newregs, *regs = task_pt_regs(task); int ret = -EINVAL; newregs = *regs; @@ -377,7 +362,7 @@ void ptrace_set_bpt(struct task_struct *child) u32 insn; int res; - regs = get_user_regs(child); + regs = task_pt_regs(child); pc = instruction_pointer(regs); res = read_instr(child, pc, &insn); @@ -500,7 +485,7 @@ static int ptrace_write_user(struct task_struct *tsk, unsigned long off, */ static int ptrace_getregs(struct task_struct *tsk, void *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; } @@ -515,7 +500,7 @@ static int ptrace_setregs(struct task_struct *tsk, void *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); ret = -EINVAL; if (valid_user_regs(&newregs)) { |
