[3/9] sframe: Enhance comments for SFRAME_CFA_*_REG macros
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Commit Message
Specify what the SFRAME_CFA_*_REG register numbers are used for:
- SP (stack pointer): CFA tracking
- FP (frame pointer): CFA and FP tracking
- RA (return address): RA tracking
gas/
* config/tc-aarch64.h: Enhance comments for SFRAME_CFA_*_REG
macros.
* config/tc-i386.h: Likewise.
Reviewed-by: Andreas Krebbel <krebbel@linux.ibm.com>
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
---
gas/config/tc-aarch64.h | 6 +++---
gas/config/tc-i386.h | 4 ++--
2 files changed, 5 insertions(+), 5 deletions(-)
@@ -267,15 +267,15 @@ extern void aarch64_after_parse_args (void);
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 register number for CFA tracking. */
extern unsigned int aarch64_sframe_cfa_sp_reg;
#define SFRAME_CFA_SP_REG aarch64_sframe_cfa_sp_reg
-/* The frame-pointer register number for SFrame stack trace info. */
+/* The frame-pointer register number for 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 SFrame stack trace info. */
+/* The return address register number for RA tracking. */
extern unsigned int aarch64_sframe_cfa_ra_reg;
#define SFRAME_CFA_RA_REG aarch64_sframe_cfa_ra_reg
@@ -440,11 +440,11 @@ extern bool x86_scfi_callee_saved_p (uint32_t dw2reg_num);
extern bool x86_support_sframe_p (void);
#define support_sframe_p x86_support_sframe_p
-/* The stack-pointer register number for SFrame stack trace info. */
+/* The stack-pointer register number for CFA tracking. */
extern unsigned int x86_sframe_cfa_sp_reg;
#define SFRAME_CFA_SP_REG x86_sframe_cfa_sp_reg
-/* The frame-pointer register number for SFrame stack trace info. */
+/* The frame-pointer register number for CFA and FP tracking. */
extern unsigned int x86_sframe_cfa_fp_reg;
#define SFRAME_CFA_FP_REG x86_sframe_cfa_fp_reg