86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#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
|
|
#define CFI_ESCAPE .cfi_escape
|
|
|
|
#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
|
|
#define CFI_SIGNAL_FRAME .cfi_signal_frame
|
|
#else
|
|
#define CFI_SIGNAL_FRAME
|
|
#endif
|
|
|
|
#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
|
|
#ifndef BUILD_VDSO
|
|
/*
|
|
* Emit CFI data in .debug_frame sections, not .eh_frame sections.
|
|
* The latter we currently just discard since we don't do DWARF
|
|
* unwinding at runtime. So only the offline DWARF information is
|
|
* useful to anyone. Note we should not use this directive if
|
|
* vmlinux.lds.S gets changed so it doesn't discard .eh_frame.
|
|
*/
|
|
.cfi_sections .debug_frame
|
|
#else
|
|
/*
|
|
* For the vDSO, emit both runtime unwind information and debug
|
|
* symbols for the .dbg file.
|
|
*/
|
|
.cfi_sections .eh_frame, .debug_frame
|
|
#endif
|
|
#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_ESCAPE cfi_ignore
|
|
#define CFI_SIGNAL_FRAME cfi_ignore
|
|
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_DWARF2_H */
|