x86: use generic register names in struct user_regs_struct
Switch struct user_regs_struct (defined in <asm/user.h>, which is no
longer exported to userspace) to using register names without e- or
r-prefixes for both 32 and 64 bit x86. This is intended as a
preliminary step in unifying this code between architectures.
Also, be a bit more strict in truncating 32-bit "extended" segment
register values to 16 bits.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/user_32.h b/include/asm-x86/user_32.h
index 0e85d2a..ed8b8fc 100644
--- a/include/asm-x86/user_32.h
+++ b/include/asm-x86/user_32.h
@@ -75,13 +75,23 @@
* doesn't use the extra segment registers)
*/
struct user_regs_struct {
- long ebx, ecx, edx, esi, edi, ebp, eax;
- unsigned short ds, __ds, es, __es;
- unsigned short fs, __fs, gs, __gs;
- long orig_eax, eip;
- unsigned short cs, __cs;
- long eflags, esp;
- unsigned short ss, __ss;
+ unsigned long bx;
+ unsigned long cx;
+ unsigned long dx;
+ unsigned long si;
+ unsigned long di;
+ unsigned long bp;
+ unsigned long ax;
+ unsigned long ds;
+ unsigned long es;
+ unsigned long fs;
+ unsigned long gs;
+ unsigned long orig_ax;
+ unsigned long ip;
+ unsigned long cs;
+ unsigned long flags;
+ unsigned long sp;
+ unsigned long ss;
};
/* When the kernel dumps core, it starts by dumping the user struct -
diff --git a/include/asm-x86/user_64.h b/include/asm-x86/user_64.h
index 12785c6..a5449d4 100644
--- a/include/asm-x86/user_64.h
+++ b/include/asm-x86/user_64.h
@@ -40,13 +40,13 @@
* and both the standard and SIMD floating point data can be accessed via
* the new ptrace requests. In either case, changes to the FPU environment
* will be reflected in the task's state as expected.
- *
+ *
* x86-64 support by Andi Kleen.
*/
/* This matches the 64bit FXSAVE format as defined by AMD. It is the same
as the 32bit format defined by Intel, except that the selector:offset pairs for
- data and eip are replaced with flat 64bit pointers. */
+ data and eip are replaced with flat 64bit pointers. */
struct user_i387_struct {
unsigned short cwd;
unsigned short swd;
@@ -65,13 +65,34 @@
* Segment register layout in coredumps.
*/
struct user_regs_struct {
- unsigned long r15,r14,r13,r12,rbp,rbx,r11,r10;
- unsigned long r9,r8,rax,rcx,rdx,rsi,rdi,orig_rax;
- unsigned long rip,cs,eflags;
- unsigned long rsp,ss;
- unsigned long fs_base, gs_base;
- unsigned long ds,es,fs,gs;
-};
+ unsigned long r15;
+ unsigned long r14;
+ unsigned long r13;
+ unsigned long r12;
+ unsigned long bp;
+ unsigned long bx;
+ unsigned long r11;
+ unsigned long r10;
+ unsigned long r9;
+ unsigned long r8;
+ unsigned long ax;
+ unsigned long cx;
+ unsigned long dx;
+ unsigned long si;
+ unsigned long di;
+ unsigned long orig_ax;
+ unsigned long ip;
+ unsigned long cs;
+ unsigned long flags;
+ unsigned long sp;
+ unsigned long ss;
+ unsigned long fs_base;
+ unsigned long gs_base;
+ unsigned long ds;
+ unsigned long es;
+ unsigned long fs;
+ unsigned long gs;
+};
/* When the kernel dumps core, it starts by dumping the user struct -
this will be used by gdb to figure out where the data and stack segments
@@ -94,7 +115,7 @@
This is actually the bottom of the stack,
the top of the stack is always found in the
esp register. */
- long int signal; /* Signal that caused the core dump. */
+ long int signal; /* Signal that caused the core dump. */
int reserved; /* No longer used */
int pad1;
struct user_pt_regs * u_ar0; /* Used by gdb to help find the values for */
