linux/include/asm-x86/ptrace-abi.h

#ifndef _ASM_X86_PTRACE_ABI_H
#define _ASM_X86_PTRACE_ABI_H

#ifdef __i386__

#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

#else /* __i386__ */

#if defined(__ASSEMBLY__) || defined(__FRAME_OFFSETS)
#define R15 0
#define R14 8
#define R13 16
#define R12 24
#define RBP 32
#define RBX 40
/* arguments: interrupts/non tracing syscalls only save upto here*/
#define R11 48
#define R10 56
#define R9 64
#define R8 72
#define RAX 80
#define RCX 88
#define RDX 96
#define RSI 104
#define RDI 112
#define ORIG_RAX 120       /* = ERROR */
/* end of arguments */
/* cpu exception frame or undefined in case of fast syscall. */
#define RIP 128
#define CS 136
#define EFLAGS 144
#define RSP 152
#define SS 160
#define ARGOFFSET R11
#endif /* __ASSEMBLY__ */

/* top of stack page */
#define FRAME_SIZE 168

#endif /* !__i386__ */

/* 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_OLDSETOPTIONS      21

/* only useful for access 32bit programs / kernels */
#define PTRACE_GET_THREAD_AREA    25
#define PTRACE_SET_THREAD_AREA    26

#ifdef __x86_64__
# define PTRACE_ARCH_PRCTL	  30
#else
# define PTRACE_SYSEMU		  31
# define PTRACE_SYSEMU_SINGLESTEP 32
#endif

#define PTRACE_SINGLEBLOCK	33	/* resume execution until next branch */

/* Return maximal BTS buffer size in number of records,
   if successuf; -1, otherwise.
   EOPNOTSUPP...processor does not support bts tracing */
#define PTRACE_BTS_MAX_BUFFER_SIZE 40

/* Allocate new bts buffer (free old one, if exists) of size DATA bts records;
   parameter ADDR is ignored.
   Return 0, if successful; -1, otherwise.
   EOPNOTSUPP...processor does not support bts tracing
   EINVAL.......invalid size in records
   ENOMEM.......out of memory */
#define PTRACE_BTS_ALLOCATE_BUFFER 41

/* Return the size of the bts buffer in number of bts records,
   if successful; -1, otherwise.
   EOPNOTSUPP...processor does not support bts tracing
   ENXIO........no buffer allocated */
#define PTRACE_BTS_GET_BUFFER_SIZE 42

/* Read the DATA'th bts record into a ptrace_bts_record buffer
   provided in ADDR.
   Records are ordered from newest to oldest.
   Return 0, if successful; -1, otherwise
   EOPNOTSUPP...processor does not support bts tracing
   ENXIO........no buffer allocated
   EINVAL.......invalid index */
#define PTRACE_BTS_READ_RECORD 43

/* Configure last branch trace; the configuration is given as a bit-mask of
   PTRACE_BTS_O_* options in DATA; parameter ADDR is ignored.
   Return 0, if successful; -1, otherwise
   EOPNOTSUPP...processor does not support bts tracing
   ENXIO........no buffer allocated */
#define PTRACE_BTS_CONFIG 44

/* Return the configuration as bit-mask of PTRACE_BTS_O_* options
   if successful; -1, otherwise.
   EOPNOTSUPP...processor does not support bts tracing
   ENXIO........no buffer allocated */
#define PTRACE_BTS_STATUS 45

/* Trace configuration options */
/* Collect last branch trace */
#define PTRACE_BTS_O_TRACE_TASK 0x1
/* Take timestamps when the task arrives and departs */
#define PTRACE_BTS_O_TIMESTAMPS 0x2

#endif