root/include/asm-x86/dwarf2.h

INCLUDED FROM

#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

#endif /* ASM_X86__DWARF2_H */