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1965aae3 PA |
1 | #ifndef _ASM_X86_DWARF2_H |
2 | #define _ASM_X86_DWARF2_H | |
392a0fc9 GC |
3 | |
4 | #ifndef __ASSEMBLY__ | |
5 | #warning "asm/dwarf2.h should be only included in pure assembly files" | |
6 | #endif | |
7 | ||
8 | /* | |
8a2503fa CG |
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. | |
392a0fc9 GC |
13 | */ |
14 | ||
15 | #ifdef CONFIG_AS_CFI | |
16 | ||
8a2503fa CG |
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 | |
392a0fc9 GC |
30 | |
31 | #ifdef CONFIG_AS_CFI_SIGNAL_FRAME | |
8a2503fa | 32 | #define CFI_SIGNAL_FRAME .cfi_signal_frame |
392a0fc9 GC |
33 | #else |
34 | #define CFI_SIGNAL_FRAME | |
35 | #endif | |
36 | ||
9e565292 RM |
37 | #if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__) |
38 | /* | |
39 | * Emit CFI data in .debug_frame sections, not .eh_frame sections. | |
40 | * The latter we currently just discard since we don't do DWARF | |
41 | * unwinding at runtime. So only the offline DWARF information is | |
42 | * useful to anyone. Note we should not use this directive if this | |
43 | * file is used in the vDSO assembly, or if vmlinux.lds.S gets | |
44 | * changed so it doesn't discard .eh_frame. | |
45 | */ | |
46 | .cfi_sections .debug_frame | |
47 | #endif | |
48 | ||
96a388de | 49 | #else |
392a0fc9 | 50 | |
8a2503fa CG |
51 | /* |
52 | * Due to the structure of pre-exisiting code, don't use assembler line | |
53 | * comment character # to ignore the arguments. Instead, use a dummy macro. | |
54 | */ | |
3f1c3872 | 55 | .macro cfi_ignore a=0, b=0, c=0, d=0 |
392a0fc9 GC |
56 | .endm |
57 | ||
8a2503fa CG |
58 | #define CFI_STARTPROC cfi_ignore |
59 | #define CFI_ENDPROC cfi_ignore | |
60 | #define CFI_DEF_CFA cfi_ignore | |
3f1c3872 KW |
61 | #define CFI_DEF_CFA_REGISTER cfi_ignore |
62 | #define CFI_DEF_CFA_OFFSET cfi_ignore | |
63 | #define CFI_ADJUST_CFA_OFFSET cfi_ignore | |
8a2503fa CG |
64 | #define CFI_OFFSET cfi_ignore |
65 | #define CFI_REL_OFFSET cfi_ignore | |
66 | #define CFI_REGISTER cfi_ignore | |
67 | #define CFI_RESTORE cfi_ignore | |
68 | #define CFI_REMEMBER_STATE cfi_ignore | |
69 | #define CFI_RESTORE_STATE cfi_ignore | |
70 | #define CFI_UNDEFINED cfi_ignore | |
71 | #define CFI_SIGNAL_FRAME cfi_ignore | |
392a0fc9 GC |
72 | |
73 | #endif | |
74 | ||
8a2503fa CG |
75 | /* |
76 | * An attempt to make CFI annotations more or less | |
77 | * correct and shorter. It is implied that you know | |
78 | * what you're doing if you use them. | |
79 | */ | |
80 | #ifdef __ASSEMBLY__ | |
81 | #ifdef CONFIG_X86_64 | |
82 | .macro pushq_cfi reg | |
83 | pushq \reg | |
84 | CFI_ADJUST_CFA_OFFSET 8 | |
85 | .endm | |
86 | ||
87 | .macro popq_cfi reg | |
88 | popq \reg | |
89 | CFI_ADJUST_CFA_OFFSET -8 | |
90 | .endm | |
91 | ||
df5d1874 JB |
92 | .macro pushfq_cfi |
93 | pushfq | |
94 | CFI_ADJUST_CFA_OFFSET 8 | |
95 | .endm | |
96 | ||
97 | .macro popfq_cfi | |
98 | popfq | |
99 | CFI_ADJUST_CFA_OFFSET -8 | |
100 | .endm | |
101 | ||
8a2503fa CG |
102 | .macro movq_cfi reg offset=0 |
103 | movq %\reg, \offset(%rsp) | |
104 | CFI_REL_OFFSET \reg, \offset | |
105 | .endm | |
106 | ||
107 | .macro movq_cfi_restore offset reg | |
108 | movq \offset(%rsp), %\reg | |
109 | CFI_RESTORE \reg | |
110 | .endm | |
111 | #else /*!CONFIG_X86_64*/ | |
fe9b4e4e PA |
112 | .macro pushl_cfi reg |
113 | pushl \reg | |
114 | CFI_ADJUST_CFA_OFFSET 4 | |
115 | .endm | |
8a2503fa | 116 | |
fe9b4e4e PA |
117 | .macro popl_cfi reg |
118 | popl \reg | |
119 | CFI_ADJUST_CFA_OFFSET -4 | |
120 | .endm | |
8a2503fa | 121 | |
df5d1874 JB |
122 | .macro pushfl_cfi |
123 | pushfl | |
124 | CFI_ADJUST_CFA_OFFSET 4 | |
125 | .endm | |
126 | ||
127 | .macro popfl_cfi | |
128 | popfl | |
129 | CFI_ADJUST_CFA_OFFSET -4 | |
130 | .endm | |
131 | ||
fe9b4e4e PA |
132 | .macro movl_cfi reg offset=0 |
133 | movl %\reg, \offset(%esp) | |
134 | CFI_REL_OFFSET \reg, \offset | |
135 | .endm | |
136 | ||
137 | .macro movl_cfi_restore offset reg | |
138 | movl \offset(%esp), %\reg | |
139 | CFI_RESTORE \reg | |
140 | .endm | |
8a2503fa CG |
141 | #endif /*!CONFIG_X86_64*/ |
142 | #endif /*__ASSEMBLY__*/ | |
143 | ||
1965aae3 | 144 | #endif /* _ASM_X86_DWARF2_H */ |