1/* libunwind - a platform-independent unwind library
2   Copyright (C) 2002, 2005 Hewlett-Packard Co
3	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
4
5   Modified for x86_64 by Max Asbock <masbock@us.ibm.com>
6
7This file is part of libunwind.
8
9Permission is hereby granted, free of charge, to any person obtaining
10a copy of this software and associated documentation files (the
11"Software"), to deal in the Software without restriction, including
12without limitation the rights to use, copy, modify, merge, publish,
13distribute, sublicense, and/or sell copies of the Software, and to
14permit persons to whom the Software is furnished to do so, subject to
15the following conditions:
16
17The above copyright notice and this permission notice shall be
18included in all copies or substantial portions of the Software.
19
20THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
27
28#ifndef unwind_i_h
29#define unwind_i_h
30
31#include <stdint.h>
32
33#include <libunwind-x86_64.h>
34
35#include "libunwind_i.h"
36#include <sys/ucontext.h>
37
38/* DWARF column numbers for x86_64: */
39#define RAX	0
40#define RDX	1
41#define RCX	2
42#define RBX	3
43#define RSI	4
44#define RDI	5
45#define RBP	6
46#define RSP	7
47#define R8	8
48#define R9	9
49#define R10	10
50#define R11	11
51#define R12	12
52#define R13	13
53#define R14	14
54#define R15	15
55#define RIP	16
56
57#define x86_64_lock			UNW_OBJ(lock)
58#define x86_64_local_resume		UNW_OBJ(local_resume)
59#define x86_64_local_addr_space_init	UNW_OBJ(local_addr_space_init)
60#define setcontext			UNW_ARCH_OBJ (setcontext)
61#if 0
62#define x86_64_scratch_loc		UNW_OBJ(scratch_loc)
63#endif
64#define x86_64_r_uc_addr		UNW_OBJ(r_uc_addr)
65#define x86_64_sigreturn		UNW_OBJ(sigreturn)
66
67/* By-pass calls to access_mem() when known to be safe. */
68#ifdef UNW_LOCAL_ONLY
69# undef ACCESS_MEM_FAST
70# define ACCESS_MEM_FAST(ret,validate,cur,addr,to)                     \
71  do {                                                                 \
72    if (unlikely(validate))                                            \
73      (ret) = dwarf_get ((cur), DWARF_MEM_LOC ((cur), (addr)), &(to)); \
74    else                                                               \
75      (ret) = 0, (to) = *(unw_word_t *)(addr);                         \
76  } while (0)
77#endif
78
79extern void x86_64_local_addr_space_init (void);
80extern int x86_64_local_resume (unw_addr_space_t as, unw_cursor_t *cursor,
81			     void *arg);
82extern int setcontext (const ucontext_t *ucp);
83
84#if 0
85extern dwarf_loc_t x86_64_scratch_loc (struct cursor *c, unw_regnum_t reg);
86#endif
87
88extern void *x86_64_r_uc_addr (ucontext_t *uc, int reg);
89extern NORETURN void x86_64_sigreturn (unw_cursor_t *cursor);
90
91#endif /* unwind_i_h */
92