diff options
| author | cailulu <cailulu@loongson.cn> | 2023-09-01 11:09:00 +0800 |
|---|---|---|
| committer | liuzhensong <liuzhensong@loongson.cn> | 2023-09-07 19:45:52 +0800 |
| commit | ecb802d02eeb8040ce26b89ec7a2445c4b86e646 (patch) | |
| tree | 06c71365faf239c58971130c6aa634a0d91cbec0 /gas | |
| parent | 6de11ff67a925a496319d25dee0bea58427aacf6 (diff) | |
| download | binutils-ecb802d02eeb8040ce26b89ec7a2445c4b86e646.zip binutils-ecb802d02eeb8040ce26b89ec7a2445c4b86e646.tar.gz binutils-ecb802d02eeb8040ce26b89ec7a2445c4b86e646.tar.bz2 | |
Use 32/64_PCREL to replace a pair of ADD32/64 and SUB32/64.
Subtraction for labels that require static relocation
usually generates ADD32/64 and SUB32/64.
If subsy of BFD_RELOC_32/64 and PC in same segment,
and disable relax or PC at start of subsy or enable
relax but not in SEC_CODE, we generate 32/64_PCREL
to replace a pair of ADD32/64 and SUB32/64.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/config/tc-loongarch.c | 22 | ||||
| -rw-r--r-- | gas/config/tc-loongarch.h | 12 |
2 files changed, 22 insertions, 12 deletions
diff --git a/gas/config/tc-loongarch.c b/gas/config/tc-loongarch.c index 2e8a259..57faffe 100644 --- a/gas/config/tc-loongarch.c +++ b/gas/config/tc-loongarch.c @@ -1195,7 +1195,6 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) static int64_t stack_top; static int last_reloc_is_sop_push_pcrel_1 = 0; int last_reloc_is_sop_push_pcrel = last_reloc_is_sop_push_pcrel_1; - segT sub_segment; last_reloc_is_sop_push_pcrel_1 = 0; char *buf = fixP->fx_frag->fr_literal + fixP->fx_where; @@ -1273,16 +1272,19 @@ md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) (use md_number_to_chars (buf, 0, fixP->fx_size)). */ case BFD_RELOC_64: case BFD_RELOC_32: - if (fixP->fx_r_type == BFD_RELOC_32 - && fixP->fx_addsy && fixP->fx_subsy - && (sub_segment = S_GET_SEGMENT (fixP->fx_subsy)) - && strcmp (sub_segment->name, ".eh_frame") == 0 - && S_GET_VALUE (fixP->fx_subsy) - == fixP->fx_frag->fr_address + fixP->fx_where) + if (fixP->fx_pcrel) { - fixP->fx_r_type = BFD_RELOC_LARCH_32_PCREL; - fixP->fx_subsy = NULL; - break; + switch (fixP->fx_r_type) + { + case BFD_RELOC_64: + fixP->fx_r_type = BFD_RELOC_LARCH_64_PCREL; + break; + case BFD_RELOC_32: + fixP->fx_r_type = BFD_RELOC_LARCH_32_PCREL; + break; + default: + break; + } } if (fixP->fx_addsy && fixP->fx_subsy) diff --git a/gas/config/tc-loongarch.h b/gas/config/tc-loongarch.h index a9f2a0a..d353f18 100644 --- a/gas/config/tc-loongarch.h +++ b/gas/config/tc-loongarch.h @@ -71,8 +71,16 @@ extern bool loongarch_frag_align_code (int); relaxation, so do not resolve such expressions in the assembler. */ #define md_allow_local_subtract(l,r,s) 0 -/* Values passed to md_apply_fix don't include symbol values. */ -#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) 1 +/* If subsy of BFD_RELOC32/64 and PC in same segment, and without relax + or PC at start of subsy or with relax but sub_symbol_segment not in + SEC_CODE, we generate 32/64_PCREL. */ +#define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG) \ + (!((BFD_RELOC_32 || BFD_RELOC_64) \ + &&(!LARCH_opts.relax \ + || S_GET_VALUE (FIX->fx_subsy) \ + == FIX->fx_frag->fr_address + FIX->fx_where \ + || (LARCH_opts.relax \ + && ((S_GET_SEGMENT (FIX->fx_subsy)->flags & SEC_CODE) == 0))))) #define TC_VALIDATE_FIX_SUB(FIX, SEG) 1 #define DIFF_EXPR_OK 1 |