diff options
Diffstat (limited to 'gas/config/tc-aarch64.h')
| -rw-r--r-- | gas/config/tc-aarch64.h | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/gas/config/tc-aarch64.h b/gas/config/tc-aarch64.h index 1b8bada..15e2243 100644 --- a/gas/config/tc-aarch64.h +++ b/gas/config/tc-aarch64.h @@ -263,28 +263,49 @@ extern void aarch64_after_parse_args (void); #ifdef OBJ_ELF +#define TARGET_USE_GINSN 1 +/* Allow GAS to synthesize DWARF CFI for hand-written asm. + PS: TARGET_USE_CFIPOP is a pre-condition. */ +#define TARGET_USE_SCFI 1 +/* Identify the maximum DWARF register number of all the registers being + tracked for SCFI. This is the last DWARF register number of the set + of SP, FP, and all callee-saved registers. For Aarch64, this means 79 + because FP/Advanced SIMD v8-v15 are also callee-saved registers. */ +# define SCFI_MAX_REG_ID 79 +/* Identify the DWARF register number of the frame-pointer register. */ +# define REG_FP 29 +/* Identify the DWARF register number of the link register. */ +# define REG_LR 30 +/* Identify the DWARF register number of the stack-pointer register. */ +# define REG_SP 31 + +#define SCFI_INIT_CFA_OFFSET 0 + +#define SCFI_CALLEE_SAVED_REG_P(dw2reg) aarch64_scfi_callee_saved_p (dw2reg) +extern bool aarch64_scfi_callee_saved_p (uint32_t dw2reg_num); + /* Whether SFrame stack trace info is supported. */ extern bool aarch64_support_sframe_p (void); #define support_sframe_p aarch64_support_sframe_p -/* The stack-pointer register number for SFrame stack trace info. */ +/* The stack pointer DWARF register number for SFrame CFA tracking. */ extern unsigned int aarch64_sframe_cfa_sp_reg; #define SFRAME_CFA_SP_REG aarch64_sframe_cfa_sp_reg -/* The base-pointer register number for CFA stack trace info. */ +/* The frame pointer DWARF register number for SFrame CFA and FP tracking. */ extern unsigned int aarch64_sframe_cfa_fp_reg; #define SFRAME_CFA_FP_REG aarch64_sframe_cfa_fp_reg -/* The return address register number for CFA stack trace info. */ +/* The return address DWARF register number for SFrame RA tracking. */ extern unsigned int aarch64_sframe_cfa_ra_reg; #define SFRAME_CFA_RA_REG aarch64_sframe_cfa_ra_reg -/* Specify if RA tracking is needed. */ +/* Whether SFrame return address tracking is needed. */ extern bool aarch64_sframe_ra_tracking_p (void); #define sframe_ra_tracking_p aarch64_sframe_ra_tracking_p -/* Specify the fixed offset to recover RA from CFA. - (useful only when RA tracking is not needed). */ +/* The fixed offset from CFA for SFrame to recover the return address. + (useful only when SFrame RA tracking is not needed). */ extern offsetT aarch64_sframe_cfa_ra_offset (void); #define sframe_cfa_ra_offset aarch64_sframe_cfa_ra_offset |