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review.evervolv.com / android_kernel_htc_msm8960 / 5579fd7e6aed8860ea0c8e3f11897493153b10ad / . / arch / x86 / include / asm / dwarf2.h
blob: 3afc5e87cfddbebc3e57773210ff8e89c0c232ce [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
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]30
31#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]32#define CFI_SIGNAL_FRAME .cfi_signal_frame
Thomas Gleixner96a388d2007-10-11 11:20:03 +0200[diff] [blame]33#else
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]34#define CFI_SIGNAL_FRAME
35#endif
36
37#else
38
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]39/*
40 * Due to the structure of pre-exisiting code, don't use assembler line
41 * comment character # to ignore the arguments. Instead, use a dummy macro.
42 */
Kevin Winchester3f1c3872008-07-14 21:36:13 -0300[diff] [blame]43.macro cfi_ignore a=0, b=0, c=0, d=0
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]44.endm
45
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]46#define CFI_STARTPROC cfi_ignore
47#define CFI_ENDPROC cfi_ignore
48#define CFI_DEF_CFA cfi_ignore
Kevin Winchester3f1c3872008-07-14 21:36:13 -0300[diff] [blame]49#define CFI_DEF_CFA_REGISTER cfi_ignore
50#define CFI_DEF_CFA_OFFSET cfi_ignore
51#define CFI_ADJUST_CFA_OFFSET cfi_ignore
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]52#define CFI_OFFSET cfi_ignore
53#define CFI_REL_OFFSET cfi_ignore
54#define CFI_REGISTER cfi_ignore
55#define CFI_RESTORE cfi_ignore
56#define CFI_REMEMBER_STATE cfi_ignore
57#define CFI_RESTORE_STATE cfi_ignore
58#define CFI_UNDEFINED cfi_ignore
59#define CFI_SIGNAL_FRAME cfi_ignore
Glauber Costa392a0fc2008-07-11 12:36:52 -0300[diff] [blame]60
61#endif
62
Cyrill Gorcunov8a2503f2008-11-23 14:53:43 +0300[diff] [blame]63/*
64 * An attempt to make CFI annotations more or less
65 * correct and shorter. It is implied that you know
66 * what you're doing if you use them.
67 */
68#ifdef __ASSEMBLY__
69#ifdef CONFIG_X86_64
70 .macro pushq_cfi reg
71 pushq \reg
72 CFI_ADJUST_CFA_OFFSET 8
73 .endm
74
75 .macro popq_cfi reg
76 popq \reg
77 CFI_ADJUST_CFA_OFFSET -8
78 .endm
79
80 .macro movq_cfi reg offset=0
81 movq %\reg, \offset(%rsp)
82 CFI_REL_OFFSET \reg, \offset
83 .endm
84
85 .macro movq_cfi_restore offset reg
86 movq \offset(%rsp), %\reg
87 CFI_RESTORE \reg
88 .endm
89#else /*!CONFIG_X86_64*/
90
91 /* 32bit defenitions are missed yet */
92
93#endif /*!CONFIG_X86_64*/
94#endif /*__ASSEMBLY__*/
95
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]96#endif /* _ASM_X86_DWARF2_H */