diff options
Diffstat (limited to 'arch/x86/include/asm/dwarf2.h')
| -rw-r--r-- | arch/x86/include/asm/dwarf2.h | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/arch/x86/include/asm/dwarf2.h b/arch/x86/include/asm/dwarf2.h index 3afc5e87cfd..f6f15986df6 100644 --- a/arch/x86/include/asm/dwarf2.h +++ b/arch/x86/include/asm/dwarf2.h @@ -27,6 +27,7 @@ #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 @@ -34,6 +35,18 @@ #define CFI_SIGNAL_FRAME #endif +#if defined(CONFIG_AS_CFI_SECTIONS) && defined(__ASSEMBLY__) + /* + * 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 this + * file is used in the vDSO assembly, or if vmlinux.lds.S gets + * changed so it doesn't discard .eh_frame. + */ + .cfi_sections .debug_frame +#endif + #else /* @@ -56,6 +69,7 @@ #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 @@ -77,6 +91,16 @@ CFI_ADJUST_CFA_OFFSET -8 .endm + .macro pushfq_cfi + pushfq + CFI_ADJUST_CFA_OFFSET 8 + .endm + + .macro popfq_cfi + popfq + CFI_ADJUST_CFA_OFFSET -8 + .endm + .macro movq_cfi reg offset=0 movq %\reg, \offset(%rsp) CFI_REL_OFFSET \reg, \offset @@ -87,9 +111,35 @@ CFI_RESTORE \reg .endm #else /*!CONFIG_X86_64*/ + .macro pushl_cfi reg + pushl \reg + CFI_ADJUST_CFA_OFFSET 4 + .endm - /* 32bit defenitions are missed yet */ + .macro popl_cfi reg + popl \reg + CFI_ADJUST_CFA_OFFSET -4 + .endm + .macro pushfl_cfi + pushfl + CFI_ADJUST_CFA_OFFSET 4 + .endm + + .macro popfl_cfi + popfl + CFI_ADJUST_CFA_OFFSET -4 + .endm + + .macro movl_cfi reg offset=0 + movl %\reg, \offset(%esp) + CFI_REL_OFFSET \reg, \offset + .endm + + .macro movl_cfi_restore offset reg + movl \offset(%esp), %\reg + CFI_RESTORE \reg + .endm #endif /*!CONFIG_X86_64*/ #endif /*__ASSEMBLY__*/ |