projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 7b956f03 AL |
2 | #ifndef _ASM_X86_DWARF2_H |
| 3 | #define _ASM_X86_DWARF2_H | |
| 4 | ||
| 5 | #ifndef __ASSEMBLY__ | |
| 6 | #warning "asm/dwarf2.h should be only included in pure assembly files" | |
| 7 | #endif | |
| 8 | ||
| 9 | /* | |
| 10 | * Macros for dwarf2 CFI unwind table entries. | |
| 11 | * See "as.info" for details on these pseudo ops. Unfortunately | |
| 12 | * they are only supported in very new binutils, so define them | |
| 13 | * away for older version. | |
| 14 | */ | |
| 15 | ||
| 16 | #ifdef CONFIG_AS_CFI | |
| 17 | ||
| 18 | #define CFI_STARTPROC .cfi_startproc | |
| 19 | #define CFI_ENDPROC .cfi_endproc | |
| 20 | #define CFI_DEF_CFA .cfi_def_cfa | |
| 21 | #define CFI_DEF_CFA_REGISTER .cfi_def_cfa_register | |
| 22 | #define CFI_DEF_CFA_OFFSET .cfi_def_cfa_offset | |
| 23 | #define CFI_ADJUST_CFA_OFFSET .cfi_adjust_cfa_offset | |
| 24 | #define CFI_OFFSET .cfi_offset | |
| 25 | #define CFI_REL_OFFSET .cfi_rel_offset | |
| 26 | #define CFI_REGISTER .cfi_register | |
| 27 | #define CFI_RESTORE .cfi_restore | |
| 28 | #define CFI_REMEMBER_STATE .cfi_remember_state | |
| 29 | #define CFI_RESTORE_STATE .cfi_restore_state | |
| 30 | #define CFI_UNDEFINED .cfi_undefined | |
| 31 | #define CFI_ESCAPE .cfi_escape | |
| 32 | ||
| 33 | #ifdef CONFIG_AS_CFI_SIGNAL_FRAME | |
| 34 | #define CFI_SIGNAL_FRAME .cfi_signal_frame | |
| 35 | #else | |
| 36 | #define CFI_SIGNAL_FRAME | |
| 37 | #endif | |
| 38 | ||
| 39 | #if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__) | |
| f24f9108 | 40 | #ifndef BUILD_VDSO |
| 7b956f03 AL |
41 | /* |
| 42 | * Emit CFI data in .debug_frame sections, not .eh_frame sections. | |
| 43 | * The latter we currently just discard since we don't do DWARF | |
| 44 | * unwinding at runtime. So only the offline DWARF information is | |
| f24f9108 AL |
45 | * useful to anyone. Note we should not use this directive if |
| 46 | * vmlinux.lds.S gets changed so it doesn't discard .eh_frame. | |
| 7b956f03 AL |
47 | */ |
| 48 | .cfi_sections .debug_frame | |
| f24f9108 AL |
49 | #else |
| 50 | /* | |
| 51 | * For the vDSO, emit both runtime unwind information and debug | |
| 52 | * symbols for the .dbg file. | |
| 53 | */ | |
| 54 | .cfi_sections .eh_frame, .debug_frame | |
| 55 | #endif | |
| 7b956f03 AL |
56 | #endif |
| 57 | ||
| 58 | #else | |
| 59 | ||
| 60 | /* | |
| 61 | * Due to the structure of pre-exisiting code, don't use assembler line | |
| 62 | * comment character # to ignore the arguments. Instead, use a dummy macro. | |
| 63 | */ | |
| 64 | .macro cfi_ignore a=0, b=0, c=0, d=0 | |
| 65 | .endm | |
| 66 | ||
| 67 | #define CFI_STARTPROC cfi_ignore | |
| 68 | #define CFI_ENDPROC cfi_ignore | |
| 69 | #define CFI_DEF_CFA cfi_ignore | |
| 70 | #define CFI_DEF_CFA_REGISTER cfi_ignore | |
| 71 | #define CFI_DEF_CFA_OFFSET cfi_ignore | |
| 72 | #define CFI_ADJUST_CFA_OFFSET cfi_ignore | |
| 73 | #define CFI_OFFSET cfi_ignore | |
| 74 | #define CFI_REL_OFFSET cfi_ignore | |
| 75 | #define CFI_REGISTER cfi_ignore | |
| 76 | #define CFI_RESTORE cfi_ignore | |
| 77 | #define CFI_REMEMBER_STATE cfi_ignore | |
| 78 | #define CFI_RESTORE_STATE cfi_ignore | |
| 79 | #define CFI_UNDEFINED cfi_ignore | |
| 80 | #define CFI_ESCAPE cfi_ignore | |
| 81 | #define CFI_SIGNAL_FRAME cfi_ignore | |
| 82 | ||
| 83 | #endif | |
| 84 | ||
| 7b956f03 | 85 | #endif /* _ASM_X86_DWARF2_H */ |