86 lines
2.4 KiB
C
86 lines
2.4 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_DWARF2_H
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#define _ASM_X86_DWARF2_H
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#ifndef __ASSEMBLY__
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#warning "asm/dwarf2.h should be only included in pure assembly files"
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#endif
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/*
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* Macros for dwarf2 CFI unwind table entries.
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* See "as.info" for details on these pseudo ops. Unfortunately
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* they are only supported in very new binutils, so define them
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* away for older version.
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*/
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#ifdef CONFIG_AS_CFI
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#define CFI_STARTPROC .cfi_startproc
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#define CFI_ENDPROC .cfi_endproc
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#define CFI_DEF_CFA .cfi_def_cfa
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#define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register
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#define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset
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#define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset
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#define CFI_OFFSET .cfi_offset
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#define CFI_REL_OFFSET .cfi_rel_offset
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#define CFI_REGISTER .cfi_register
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#define CFI_RESTORE .cfi_restore
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#define CFI_REMEMBER_STATE .cfi_remember_state
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#define CFI_RESTORE_STATE .cfi_restore_state
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#define CFI_UNDEFINED .cfi_undefined
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#define CFI_ESCAPE .cfi_escape
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#ifdef CONFIG_AS_CFI_SIGNAL_FRAME
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#define CFI_SIGNAL_FRAME .cfi_signal_frame
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#else
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#define CFI_SIGNAL_FRAME
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#endif
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#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__)
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#ifndef BUILD_VDSO
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/*
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* Emit CFI data in .debug_frame sections, not .eh_frame sections.
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* The latter we currently just discard since we don't do DWARF
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* unwinding at runtime. So only the offline DWARF information is
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* useful to anyone. Note we should not use this directive if
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* vmlinux.lds.S gets changed so it doesn't discard .eh_frame.
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*/
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.cfi_sections .debug_frame
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#else
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/*
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* For the vDSO, emit both runtime unwind information and debug
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* symbols for the .dbg file.
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*/
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.cfi_sections .eh_frame, .debug_frame
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#endif
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#endif
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#else
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/*
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* Due to the structure of pre-exisiting code, don't use assembler line
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* comment character # to ignore the arguments. Instead, use a dummy macro.
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*/
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.macro cfi_ignore a=0, b=0, c=0, d=0
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.endm
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#define CFI_STARTPROC cfi_ignore
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#define CFI_ENDPROC cfi_ignore
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#define CFI_DEF_CFA cfi_ignore
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#define CFI_DEF_CFA_REGISTER cfi_ignore
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#define CFI_DEF_CFA_OFFSET cfi_ignore
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#define CFI_ADJUST_CFA_OFFSET cfi_ignore
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#define CFI_OFFSET cfi_ignore
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#define CFI_REL_OFFSET cfi_ignore
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#define CFI_REGISTER cfi_ignore
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#define CFI_RESTORE cfi_ignore
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#define CFI_REMEMBER_STATE cfi_ignore
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#define CFI_RESTORE_STATE cfi_ignore
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#define CFI_UNDEFINED cfi_ignore
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#define CFI_ESCAPE cfi_ignore
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#define CFI_SIGNAL_FRAME cfi_ignore
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#endif
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#endif /* _ASM_X86_DWARF2_H */
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