| #ifndef _ASM_X86_DWARF2_H |
| #define _ASM_X86_DWARF2_H |
| |
| #ifndef __ASSEMBLY__ |
| #warning "asm/dwarf2.h should be only included in pure assembly files" |
| #endif |
| |
| /* |
| * Macros for dwarf2 CFI unwind table entries. |
| * See "as.info" for details on these pseudo ops. Unfortunately |
| * they are only supported in very new binutils, so define them |
| * away for older version. |
| */ |
| |
| #ifdef CONFIG_AS_CFI |
| |
| #define CFI_STARTPROC .cfi_startproc |
| #define CFI_ENDPROC .cfi_endproc |
| #define CFI_DEF_CFA .cfi_def_cfa |
| #define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register |
| #define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset |
| #define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset |
| #define CFI_OFFSET .cfi_offset |
| #define CFI_REL_OFFSET .cfi_rel_offset |
| #define CFI_REGISTER .cfi_register |
| #define CFI_RESTORE .cfi_restore |
| #define CFI_REMEMBER_STATE .cfi_remember_state |
| #define CFI_RESTORE_STATE .cfi_restore_state |
| #define CFI_UNDEFINED .cfi_undefined |
| |
| #ifdef CONFIG_AS_CFI_SIGNAL_FRAME |
| #define CFI_SIGNAL_FRAME .cfi_signal_frame |
| #else |
| #define CFI_SIGNAL_FRAME |
| #endif |
| |
| #else |
| |
| /* |
| * Due to the structure of pre-exisiting code, don't use assembler line |
| * comment character # to ignore the arguments. Instead, use a dummy macro. |
| */ |
| .macro cfi_ignore a=0, b=0, c=0, d=0 |
| .endm |
| |
| #define CFI_STARTPROC cfi_ignore |
| #define CFI_ENDPROC cfi_ignore |
| #define CFI_DEF_CFA cfi_ignore |
| #define CFI_DEF_CFA_REGISTER cfi_ignore |
| #define CFI_DEF_CFA_OFFSET cfi_ignore |
| #define CFI_ADJUST_CFA_OFFSET cfi_ignore |
| #define CFI_OFFSET cfi_ignore |
| #define CFI_REL_OFFSET cfi_ignore |
| #define CFI_REGISTER cfi_ignore |
| #define CFI_RESTORE cfi_ignore |
| #define CFI_REMEMBER_STATE cfi_ignore |
| #define CFI_RESTORE_STATE cfi_ignore |
| #define CFI_UNDEFINED cfi_ignore |
| #define CFI_SIGNAL_FRAME cfi_ignore |
| |
| #endif |
| |
| /* |
| * An attempt to make CFI annotations more or less |
| * correct and shorter. It is implied that you know |
| * what you're doing if you use them. |
| */ |
| #ifdef __ASSEMBLY__ |
| #ifdef CONFIG_X86_64 |
| .macro pushq_cfi reg |
| pushq \reg |
| CFI_ADJUST_CFA_OFFSET 8 |
| .endm |
| |
| .macro popq_cfi reg |
| popq \reg |
| CFI_ADJUST_CFA_OFFSET -8 |
| .endm |
| |
| .macro movq_cfi reg offset=0 |
| movq %\reg, \offset(%rsp) |
| CFI_REL_OFFSET \reg, \offset |
| .endm |
| |
| .macro movq_cfi_restore offset reg |
| movq \offset(%rsp), %\reg |
| CFI_RESTORE \reg |
| .endm |
| #else /*!CONFIG_X86_64*/ |
| .macro pushl_cfi reg |
| pushl \reg |
| CFI_ADJUST_CFA_OFFSET 4 |
| .endm |
| |
| .macro popl_cfi reg |
| popl \reg |
| CFI_ADJUST_CFA_OFFSET -4 |
| .endm |
| |
| .macro movl_cfi reg offset=0 |
| movl %\reg, \offset(%esp) |
| CFI_REL_OFFSET \reg, \offset |
| .endm |
| |
| .macro movl_cfi_restore offset reg |
| movl \offset(%esp), %\reg |
| CFI_RESTORE \reg |
| .endm |
| #endif /*!CONFIG_X86_64*/ |
| #endif /*__ASSEMBLY__*/ |
| |
| #endif /* _ASM_X86_DWARF2_H */ |
