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1 /* libunwind - a platform-independent unwind library
2    Copyright (C) 2002-2004 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 
7 This file is part of libunwind.
8 
9 Permission is hereby granted, free of charge, to any person obtaining
10 a copy of this software and associated documentation files (the
11 "Software"), to deal in the Software without restriction, including
12 without limitation the rights to use, copy, modify, merge, publish,
13 distribute, sublicense, and/or sell copies of the Software, and to
14 permit persons to whom the Software is furnished to do so, subject to
15 the following conditions:
16 
17 The above copyright notice and this permission notice shall be
18 included in all copies or substantial portions of the Software.
19 
20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
27 
28 #ifndef LIBUNWIND_H
29 #define LIBUNWIND_H
30 
31 #if defined(__cplusplus) || defined(c_plusplus)
32 extern "C" {
33 #endif
34 
35 #include <sys/types.h>
36 #include <inttypes.h>
37 #include <ucontext.h>
38 
39 #define UNW_TARGET		x86_64
40 #define UNW_TARGET_X86_64	1
41 
42 #define _U_TDEP_QP_TRUE	0	/* see libunwind-dynamic.h  */
43 
44 /* This needs to be big enough to accommodate "struct cursor", while
45    leaving some slack for future expansion.  Changing this value will
46    require recompiling all users of this library.  Stack allocation is
47    relatively cheap and unwind-state copying is relatively rare, so we
48    want to err on making it rather too big than too small.  */
49 #define UNW_TDEP_CURSOR_LEN	127
50 
51 typedef uint64_t unw_word_t;
52 typedef int64_t unw_sword_t;
53 
54 typedef long double unw_tdep_fpreg_t;
55 
56 typedef enum
57   {
58     UNW_X86_64_RAX,
59     UNW_X86_64_RDX,
60     UNW_X86_64_RCX,
61     UNW_X86_64_RBX,
62     UNW_X86_64_RSI,
63     UNW_X86_64_RDI,
64     UNW_X86_64_RBP,
65     UNW_X86_64_RSP,
66     UNW_X86_64_R8,
67     UNW_X86_64_R9,
68     UNW_X86_64_R10,
69     UNW_X86_64_R11,
70     UNW_X86_64_R12,
71     UNW_X86_64_R13,
72     UNW_X86_64_R14,
73     UNW_X86_64_R15,
74     UNW_X86_64_RIP,
75 #ifdef CONFIG_MSABI_SUPPORT
76     UNW_X86_64_XMM0,
77     UNW_X86_64_XMM1,
78     UNW_X86_64_XMM2,
79     UNW_X86_64_XMM3,
80     UNW_X86_64_XMM4,
81     UNW_X86_64_XMM5,
82     UNW_X86_64_XMM6,
83     UNW_X86_64_XMM7,
84     UNW_X86_64_XMM8,
85     UNW_X86_64_XMM9,
86     UNW_X86_64_XMM10,
87     UNW_X86_64_XMM11,
88     UNW_X86_64_XMM12,
89     UNW_X86_64_XMM13,
90     UNW_X86_64_XMM14,
91     UNW_X86_64_XMM15,
92     UNW_TDEP_LAST_REG = UNW_X86_64_XMM15,
93 #else
94     UNW_TDEP_LAST_REG = UNW_X86_64_RIP,
95 #endif
96 
97     /* XXX Add other regs here */
98 
99     /* frame info (read-only) */
100     UNW_X86_64_CFA,
101 
102     UNW_TDEP_IP = UNW_X86_64_RIP,
103     UNW_TDEP_SP = UNW_X86_64_RSP,
104     UNW_TDEP_BP = UNW_X86_64_RBP,
105     UNW_TDEP_EH = UNW_X86_64_RAX
106   }
107 x86_64_regnum_t;
108 
109 #define UNW_TDEP_NUM_EH_REGS	2	/* XXX Not sure what this means */
110 
111 typedef struct unw_tdep_save_loc
112   {
113     /* Additional target-dependent info on a save location.  */
114     /* ANDROID support update. */
115     char __reserved;
116     /* End of ANDROID update. */
117   }
118 unw_tdep_save_loc_t;
119 
120 /* On x86_64, we can directly use ucontext_t as the unwind context.  */
121 typedef ucontext_t unw_tdep_context_t;
122 
123 typedef struct
124   {
125     /* no x86-64-specific auxiliary proc-info */
126     /* ANDROID support update. */
127     char __reserved;
128     /* End of ANDROID update. */
129   }
130 unw_tdep_proc_info_t;
131 
132 #include "libunwind-dynamic.h"
133 #include "libunwind-common.h"
134 
135 #define unw_tdep_getcontext		UNW_ARCH_OBJ(getcontext)
136 #define unw_tdep_is_fpreg		UNW_ARCH_OBJ(is_fpreg)
137 
138 extern int unw_tdep_getcontext (unw_tdep_context_t *);
139 extern int unw_tdep_is_fpreg (int);
140 
141 #if defined(__cplusplus) || defined(c_plusplus)
142 }
143 #endif
144 
145 #endif /* LIBUNWIND_H */
146