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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 | ||
96a388de | 37 | #else |
392a0fc9 | 38 | |
8a2503fa CG |
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 | */ | |
3f1c3872 | 43 | .macro cfi_ignore a=0, b=0, c=0, d=0 |
392a0fc9 GC |
44 | .endm |
45 | ||
8a2503fa CG |
46 | #define CFI_STARTPROC cfi_ignore |
47 | #define CFI_ENDPROC cfi_ignore | |
48 | #define CFI_DEF_CFA cfi_ignore | |
3f1c3872 KW |
49 | #define CFI_DEF_CFA_REGISTER cfi_ignore |
50 | #define CFI_DEF_CFA_OFFSET cfi_ignore | |
51 | #define CFI_ADJUST_CFA_OFFSET cfi_ignore | |
8a2503fa CG |
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 | |
392a0fc9 GC |
60 | |
61 | #endif | |
62 | ||
8a2503fa CG |
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 | ||
1965aae3 | 96 | #endif /* _ASM_X86_DWARF2_H */ |