projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |