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| author | mengqinggang <mengqinggang@loongson.cn> | 2024-01-18 19:03:11 +0800 |
|---|---|---|
| committer | liuzhensong <liuzhensong@loongson.cn> | 2024-01-24 16:32:40 +0800 |
| commit | 601c741d5ce6cae53dad8b19da8ed9c5cae4b797 (patch) | |
| tree | 7c8c4b9d41c55d68b8bd556bfa45ac0ab0d0fcfe /gas/config/tc-loongarch.c | |
| parent | 27a750dd896cfc13f4368e4c8df14e6ea5bb718f (diff) | |
| download | gdb-601c741d5ce6cae53dad8b19da8ed9c5cae4b797.zip gdb-601c741d5ce6cae53dad8b19da8ed9c5cae4b797.tar.gz gdb-601c741d5ce6cae53dad8b19da8ed9c5cae4b797.tar.bz2 | |
LoongArch: gas: Start a new frag after instructions that can be relaxed
For R_LARCH_TLS_{LE_HI20_R,LE_ADD_R,LD_PC_HI20,GD_PC_HI20, DESC_PC_HI20}
relocations, start a new frag to get correct eh_frame Call Frame Information
FDE DW_CFA_advance_loc info.
Diffstat (limited to 'gas/config/tc-loongarch.c')
| -rw-r--r-- | gas/config/tc-loongarch.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/gas/config/tc-loongarch.c b/gas/config/tc-loongarch.c index 3c7d400..e6a9901 100644 --- a/gas/config/tc-loongarch.c +++ b/gas/config/tc-loongarch.c @@ -1070,13 +1070,22 @@ append_fixp_and_insn (struct loongarch_cl_insn *ip) optimized away or compressed by the linker during relaxation, to prevent the assembler from computing static offsets across such an instruction. - This is necessary to get correct .eh_frame cfa info. If one cfa's two - symbol is not in the same frag, it will generate relocs to calculate - symbol subtraction. (gas/dw2gencfi.c:output_cfi_insn: - if (symbol_get_frag (to) == symbol_get_frag (from))) */ + This is necessary to get correct .eh_frame FDE DW_CFA_advance_loc info. + If one cfi_insn_data's two symbols are not in the same frag, it will + generate ADD and SUB relocations pairs to calculate DW_CFA_advance_loc. + (gas/dw2gencfi.c: output_cfi_insn: + if (symbol_get_frag (to) == symbol_get_frag (from))) + + For macro instructions, only the first instruction expanded from macro + need to start a new frag. */ if (LARCH_opts.relax && (BFD_RELOC_LARCH_PCALA_HI20 == reloc_info[0].type - || BFD_RELOC_LARCH_GOT_PC_HI20 == reloc_info[0].type)) + || BFD_RELOC_LARCH_GOT_PC_HI20 == reloc_info[0].type + || BFD_RELOC_LARCH_TLS_LE_HI20_R == reloc_info[0].type + || BFD_RELOC_LARCH_TLS_LE_ADD_R == reloc_info[0].type + || BFD_RELOC_LARCH_TLS_LD_PC_HI20 == reloc_info[0].type + || BFD_RELOC_LARCH_TLS_GD_PC_HI20 == reloc_info[0].type + || BFD_RELOC_LARCH_TLS_DESC_PC_HI20 == reloc_info[0].type)) { frag_wane (frag_now); frag_new (0); |