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| author | Jens Remus <jremus@linux.ibm.com> | 2024-03-28 10:31:00 +0100 |
|---|---|---|
| committer | Jens Remus <jremus@linux.ibm.com> | 2024-05-16 13:32:22 +0200 |
| commit | 388179e48a62c65c5de7aff2355dd2bef1c3664f (patch) | |
| tree | 723b89d30b91b037284cdfaea05e44be18bd5cf9 | |
| parent | 9e13b3122b1c60aa3fc3f60993c18daf2e6f282a (diff) | |
| download | binutils-388179e48a62c65c5de7aff2355dd2bef1c3664f.zip binutils-388179e48a62c65c5de7aff2355dd2bef1c3664f.tar.gz binutils-388179e48a62c65c5de7aff2355dd2bef1c3664f.tar.bz2 | |
gas: Skip SFrame FDE if .cfi_window_save
CFI opcode DW_CFA_AARCH64_negate_ra_state is multiplexed with
DW_CFA_GNU_window_save. Process DW_CFA_AARCH64_negate_ra_state on
AArch64. Skip generation of SFrame FDE otherwise.
gas/
* gen-sframe.c: Skip SFrame FDE if .cfi_window_save.
Signed-off-by: Jens Remus <jremus@linux.ibm.com>
| -rw-r--r-- | gas/gen-sframe.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/gas/gen-sframe.c b/gas/gen-sframe.c index 9fe62c2..8c5a476 100644 --- a/gas/gen-sframe.c +++ b/gas/gen-sframe.c @@ -1259,12 +1259,12 @@ sframe_xlate_do_restore (struct sframe_xlate_ctx *xlate_ctx, return SFRAME_XLATE_OK; } -/* Translate DW_CFA_GNU_window_save into SFrame context. +/* Translate DW_CFA_AARCH64_negate_ra_state into SFrame context. Return SFRAME_XLATE_OK if success. */ static int -sframe_xlate_do_gnu_window_save (struct sframe_xlate_ctx *xlate_ctx, - struct cfi_insn_data *cfi_insn ATTRIBUTE_UNUSED) +sframe_xlate_do_aarch64_negate_ra_state (struct sframe_xlate_ctx *xlate_ctx, + struct cfi_insn_data *cfi_insn ATTRIBUTE_UNUSED) { struct sframe_row_entry *cur_fre = xlate_ctx->cur_fre; @@ -1276,6 +1276,25 @@ sframe_xlate_do_gnu_window_save (struct sframe_xlate_ctx *xlate_ctx, return SFRAME_XLATE_OK; } +/* Translate DW_CFA_GNU_window_save into SFrame context. + DW_CFA_AARCH64_negate_ra_state is multiplexed with DW_CFA_GNU_window_save. + Return SFRAME_XLATE_OK if success. */ + +static int +sframe_xlate_do_gnu_window_save (struct sframe_xlate_ctx *xlate_ctx, + struct cfi_insn_data *cfi_insn) +{ + unsigned char abi_arch = sframe_get_abi_arch (); + + /* Translate DW_CFA_AARCH64_negate_ra_state into SFrame context. */ + if (abi_arch == SFRAME_ABI_AARCH64_ENDIAN_BIG + || abi_arch == SFRAME_ABI_AARCH64_ENDIAN_LITTLE) + return sframe_xlate_do_aarch64_negate_ra_state (xlate_ctx, cfi_insn); + + as_warn (_("skipping SFrame FDE due to .cfi_window_save")); + return SFRAME_XLATE_ERR_NOTREPRESENTED; /* Not represented. */ +} + /* Returns the DWARF call frame instruction name or fake CFI name for the specified CFI opcode, or NULL if the value is not recognized. */ |