Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal

[linux.git] / arch / x86 / include / asm / ptrace.h

diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
index 7e560b6daf5dabd933c810b1f2bc22620449171e..942a08623a1a09db57171fa60d03c664b7e8aa46 100644 (file)
--- a/arch/x86/include/asm/ptrace.h
+++ b/arch/x86/include/asm/ptrace.h
@@ -1,44 +1,12 @@
 #ifndef _ASM_X86_PTRACE_H
 #define _ASM_X86_PTRACE_H
 
-#include <linux/compiler.h>    /* For __user */
-#include <asm/ptrace-abi.h>
-#include <asm/processor-flags.h>
-
-#ifdef __KERNEL__
 #include <asm/segment.h>
 #include <asm/page_types.h>
-#endif
+#include <uapi/asm/ptrace.h>
 
 #ifndef __ASSEMBLY__
-
 #ifdef __i386__
-/* this struct defines the way the registers are stored on the
-   stack during a system call. */
-
-#ifndef __KERNEL__
-
-struct pt_regs {
-       long ebx;
-       long ecx;
-       long edx;
-       long esi;
-       long edi;
-       long ebp;
-       long eax;
-       int  xds;
-       int  xes;
-       int  xfs;
-       int  xgs;
-       long orig_eax;
-       long eip;
-       int  xcs;
-       long eflags;
-       long esp;
-       int  xss;
-};
-
-#else /* __KERNEL__ */
 
 struct pt_regs {
        unsigned long bx;
@@ -60,42 +28,8 @@ struct pt_regs {
        unsigned long ss;
 };
 
-#endif /* __KERNEL__ */
-
 #else /* __i386__ */
 
-#ifndef __KERNEL__
-
-struct pt_regs {
-       unsigned long r15;
-       unsigned long r14;
-       unsigned long r13;
-       unsigned long r12;
-       unsigned long rbp;
-       unsigned long rbx;
-/* arguments: non interrupts/non tracing syscalls only save up to here*/
-       unsigned long r11;
-       unsigned long r10;
-       unsigned long r9;
-       unsigned long r8;
-       unsigned long rax;
-       unsigned long rcx;
-       unsigned long rdx;
-       unsigned long rsi;
-       unsigned long rdi;
-       unsigned long orig_rax;
-/* end of arguments */
-/* cpu exception frame or undefined */
-       unsigned long rip;
-       unsigned long cs;
-       unsigned long eflags;
-       unsigned long rsp;
-       unsigned long ss;
-/* top of stack page */
-};
-
-#else /* __KERNEL__ */
-
 struct pt_regs {
        unsigned long r15;
        unsigned long r14;
@@ -124,12 +58,8 @@ struct pt_regs {
 /* top of stack page */
 };
 
-#endif /* __KERNEL__ */
 #endif /* !__i386__ */
 
-
-#ifdef __KERNEL__
-
 #include <linux/init.h>
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt_types.h>
@@ -246,6 +176,15 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
 {
        if (unlikely(offset > MAX_REG_OFFSET))
                return 0;
+#ifdef CONFIG_X86_32
+       /*
+        * Traps from the kernel do not save sp and ss.
+        * Use the helper function to retrieve sp.
+        */
+       if (offset == offsetof(struct pt_regs, sp) &&
+           regs->cs == __KERNEL_CS)
+               return kernel_stack_pointer(regs);
+#endif
        return *(unsigned long *)((unsigned long)regs + offset);
 }
 
@@ -299,8 +238,5 @@ extern int do_get_thread_area(struct task_struct *p, int idx,
 extern int do_set_thread_area(struct task_struct *p, int idx,
                              struct user_desc __user *info, int can_allocate);
 
-#endif /* __KERNEL__ */
-
 #endif /* !__ASSEMBLY__ */
-
 #endif /* _ASM_X86_PTRACE_H */