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- #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*/
- /* 32bit defenitions are missed yet */
- #endif /*!CONFIG_X86_64*/
- #endif /*__ASSEMBLY__*/
- #endif /* _ASM_X86_DWARF2_H */
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