u-boot/arch/x86/include/asm/ptrace.h
Bin Meng 013cf483c9 x86: Display correct CS/EIP/EFLAGS when there is an error code
Some exceptions cause an error code to be saved on the current stack
after the EIP value. We should extract CS/EIP/EFLAGS from different
position on the stack based on the exception number.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
2015-07-28 10:36:21 -06:00

101 lines
1.8 KiB
C

#ifndef _I386_PTRACE_H
#define _I386_PTRACE_H
#include <asm/types.h>
#define EBX 0
#define ECX 1
#define EDX 2
#define ESI 3
#define EDI 4
#define EBP 5
#define EAX 6
#define DS 7
#define ES 8
#define FS 9
#define GS 10
#define ORIG_EAX 11
#define EIP 12
#define CS 13
#define EFL 14
#define UESP 15
#define SS 16
#define FRAME_SIZE 17
/* this struct defines the way the registers are stored on the
stack during a system call. */
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;
} __attribute__ ((packed));
struct irq_regs {
/* Pushed by irq_common_entry */
long ebx;
long ecx;
long edx;
long esi;
long edi;
long ebp;
long esp;
long eax;
long xds;
long xes;
long xfs;
long xgs;
long xss;
/* Pushed by vector handler (irq_<num>) */
long irq_id;
/* Pushed by cpu in response to interrupt */
union {
struct {
long eip;
long xcs;
long eflags;
} ctx1;
struct {
long err;
long eip;
long xcs;
long eflags;
} ctx2;
} context;
} __attribute__ ((packed));
/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS 12
#define PTRACE_SETREGS 13
#define PTRACE_GETFPREGS 14
#define PTRACE_SETFPREGS 15
#define PTRACE_GETFPXREGS 18
#define PTRACE_SETFPXREGS 19
#define PTRACE_SETOPTIONS 21
/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 0x00000001
#ifdef __KERNEL__
#define user_mode(regs) ((VM_MASK & (regs)->eflags) || (3 & (regs)->xcs))
#define instruction_pointer(regs) ((regs)->eip)
extern void show_regs(struct pt_regs *);
#endif
#endif