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review.evervolv.com / android_kernel_oneplus_msm8996 / 8fcff5f13773aa3898df1d13a1615d468079cb15 / . / arch / x86 / include / asm / dwarf2.h
blob: f6f15986df6ca0f097cf245f04da7a6c123ad3b7 [file] [log] [blame]
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]1#ifndef _ASM_X86_DWARF2_H
2#define _ASM_X86_DWARF2_H
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]3
4#ifndef __ASSEMBLY__
5#warning "asm/dwarf2.h should be only included in pure assembly files"
6#endif
7
8/*
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]9 * Macros for dwarf2 CFI unwind table entries.
10 * See "as.info" for details on these pseudo ops. Unfortunately
11 * they are only supported in very new binutils, so define them
12 * away for older version.
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]13 */
14
15#ifdef CONFIG_AS_CFI
16
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]17#define CFI_STARTPROC .cfi_startproc
18#define CFI_ENDPROC .cfi_endproc
19#define CFI_DEF_CFA .cfi_def_cfa
20#define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register
21#define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset
22#define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset
23#define CFI_OFFSET .cfi_offset
24#define CFI_REL_OFFSET .cfi_rel_offset
25#define CFI_REGISTER .cfi_register
26#define CFI_RESTORE .cfi_restore
27#define CFI_REMEMBER_STATE .cfi_remember_state
28#define CFI_RESTORE_STATE .cfi_restore_state
29#define CFI_UNDEFINED .cfi_undefined
Jan Beulicheab9e612011-09-28 16:57:52 +0100[diff] [blame]30#define CFI_ESCAPE .cfi_escape
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]31
32#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]33#define CFI_SIGNAL_FRAME .cfi_signal_frame
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200[diff] [blame]34#else
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]35#define CFI_SIGNAL_FRAME
36#endif
37
Roland McGrath9e565292010-05-13 21:43:03 -0700[diff] [blame]38#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
39 /*
40 * Emit CFI data in .debug_frame sections, not .eh_frame sections.
41 * The latter we currently just discard since we don't do DWARF
42 * unwinding at runtime. So only the offline DWARF information is
43 * useful to anyone. Note we should not use this directive if this
44 * file is used in the vDSO assembly, or if vmlinux.lds.S gets
45 * changed so it doesn't discard .eh_frame.
46 */
47 .cfi_sections .debug_frame
48#endif
49
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]50#else
51
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]52/*
53 * Due to the structure of pre-exisiting code, don't use assembler line
54 * comment character # to ignore the arguments. Instead, use a dummy macro.
55 */
Kevin Winchester3f1c3872008-07-14 21:36:13 -0300[diff] [blame]56.macro cfi_ignore a=0, b=0, c=0, d=0
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]57.endm
58
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]59#define CFI_STARTPROC cfi_ignore
60#define CFI_ENDPROC cfi_ignore
61#define CFI_DEF_CFA cfi_ignore
Kevin Winchester3f1c3872008-07-14 21:36:13 -0300[diff] [blame]62#define CFI_DEF_CFA_REGISTER cfi_ignore
63#define CFI_DEF_CFA_OFFSET cfi_ignore
64#define CFI_ADJUST_CFA_OFFSET cfi_ignore
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]65#define CFI_OFFSET cfi_ignore
66#define CFI_REL_OFFSET cfi_ignore
67#define CFI_REGISTER cfi_ignore
68#define CFI_RESTORE cfi_ignore
69#define CFI_REMEMBER_STATE cfi_ignore
70#define CFI_RESTORE_STATE cfi_ignore
71#define CFI_UNDEFINED cfi_ignore
Jan Beulicheab9e612011-09-28 16:57:52 +0100[diff] [blame]72#define CFI_ESCAPE cfi_ignore
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]73#define CFI_SIGNAL_FRAME cfi_ignore
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]74
75#endif
76
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]77/*
78 * An attempt to make CFI annotations more or less
79 * correct and shorter. It is implied that you know
80 * what you're doing if you use them.
81 */
82#ifdef __ASSEMBLY__
83#ifdef CONFIG_X86_64
84 .macro pushq_cfi reg
85 pushq \reg
86 CFI_ADJUST_CFA_OFFSET 8
87 .endm
88
89 .macro popq_cfi reg
90 popq \reg
91 CFI_ADJUST_CFA_OFFSET -8
92 .endm
93
Jan Beulichdf5d1872010-09-02 14:07:16 +0100[diff] [blame]94 .macro pushfq_cfi
95 pushfq
96 CFI_ADJUST_CFA_OFFSET 8
97 .endm
98
99 .macro popfq_cfi
100 popfq
101 CFI_ADJUST_CFA_OFFSET -8
102 .endm
103
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]104 .macro movq_cfi reg offset=0
105 movq %\reg, \offset(%rsp)
106 CFI_REL_OFFSET \reg, \offset
107 .endm
108
109 .macro movq_cfi_restore offset reg
110 movq \offset(%rsp), %\reg
111 CFI_RESTORE \reg
112 .endm
113#else /*!CONFIG_X86_64*/
H. Peter Anvinfe9b4e42009-08-31 11:53:23 -0700[diff] [blame]114 .macro pushl_cfi reg
115 pushl \reg
116 CFI_ADJUST_CFA_OFFSET 4
117 .endm
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]118
H. Peter Anvinfe9b4e42009-08-31 11:53:23 -0700[diff] [blame]119 .macro popl_cfi reg
120 popl \reg
121 CFI_ADJUST_CFA_OFFSET -4
122 .endm
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]123
Jan Beulichdf5d1872010-09-02 14:07:16 +0100[diff] [blame]124 .macro pushfl_cfi
125 pushfl
126 CFI_ADJUST_CFA_OFFSET 4
127 .endm
128
129 .macro popfl_cfi
130 popfl
131 CFI_ADJUST_CFA_OFFSET -4
132 .endm
133
H. Peter Anvinfe9b4e42009-08-31 11:53:23 -0700[diff] [blame]134 .macro movl_cfi reg offset=0
135 movl %\reg, \offset(%esp)
136 CFI_REL_OFFSET \reg, \offset
137 .endm
138
139 .macro movl_cfi_restore offset reg
140 movl \offset(%esp), %\reg
141 CFI_RESTORE \reg
142 .endm
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]143#endif /*!CONFIG_X86_64*/
144#endif /*__ASSEMBLY__*/
145
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]146#endif /* _ASM_X86_DWARF2_H */