References: <[email protected]>
In-Reply-To: <[email protected]>
Signed-off-by: Al Viro <[email protected]>
---
arch/arm26/kernel/process.c | 3 +--
arch/arm26/kernel/ptrace.c | 25 +++++--------------------
include/asm-arm26/thread_info.h | 2 +-
3 files changed, 7 insertions(+), 23 deletions(-)
3a29d6c513c9d69686d33c4baa67120116a0ea6b
diff --git a/arch/arm26/kernel/process.c b/arch/arm26/kernel/process.c
index 159f84a..3863056 100644
--- a/arch/arm26/kernel/process.c
+++ b/arch/arm26/kernel/process.c
@@ -278,9 +278,8 @@ copy_thread(int nr, unsigned long clone_
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 56afe1f..3c3371d 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 t
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 *
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
*/
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_st
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)) {
diff --git a/include/asm-arm26/thread_info.h b/include/asm-arm26/thread_info.h
index 909c88d..f332b40 100644
--- a/include/asm-arm26/thread_info.h
+++ b/include/asm-arm26/thread_info.h
@@ -82,7 +82,7 @@ static inline struct thread_info *curren
/* FIXME - PAGE_SIZE < 32K */
#define THREAD_SIZE (8*32768) // FIXME - this needs attention (see kernel/fork.c which gets a nice div by zero if this is lower than 8*32768
-#define __get_user_regs(x) (((struct pt_regs *)((unsigned long)(x) + THREAD_SIZE - 8)) - 1)
+#define task_pt_regs(task) ((struct pt_regs *)((unsigned long)(task)->thread_info + THREAD_SIZE - 8) - 1)
extern struct thread_info *alloc_thread_info(struct task_struct *task);
extern void free_thread_info(struct thread_info *);
--
0.99.9.GIT
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
