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| author | mengqinggang <mengqinggang@loongson.cn> | 2024-05-30 19:52:34 +0800 |
|---|---|---|
| committer | liuzhensong <liuzhensong@loongson.cn> | 2024-06-04 19:47:27 +0800 |
| commit | 07284e5ee02c51f3df2ea8fe2370ca3d1d42d84d (patch) | |
| tree | ec2bf6dc7d59a6404db287561608ddfec7aabfa2 /ld | |
| parent | 5f4fa40e4def33ed428b2d72aeb2bf24b50a664e (diff) | |
| download | gdb-07284e5ee02c51f3df2ea8fe2370ca3d1d42d84d.zip gdb-07284e5ee02c51f3df2ea8fe2370ca3d1d42d84d.tar.gz gdb-07284e5ee02c51f3df2ea8fe2370ca3d1d42d84d.tar.bz2 | |
LoongArch: Disable linker relaxation if set the address of section or segment
If set the address of section or segment, the offset from pc to symbol
may become bigger and cause overflow.
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/emultempl/loongarchelf.em | 16 | ||||
| -rw-r--r-- | ld/testsuite/ld-loongarch-elf/relax-ttext.s | 13 | ||||
| -rw-r--r-- | ld/testsuite/ld-loongarch-elf/relax.exp | 12 |
3 files changed, 41 insertions, 0 deletions
diff --git a/ld/emultempl/loongarchelf.em b/ld/emultempl/loongarchelf.em index 3bb5ddf..2da4058 100644 --- a/ld/emultempl/loongarchelf.em +++ b/ld/emultempl/loongarchelf.em @@ -25,6 +25,22 @@ fragment <<EOF #include "elf/loongarch.h" #include "elfxx-loongarch.h" +EOF + +# Disable linker relaxation if set address of section or segment. +PARSE_AND_LIST_ARGS_CASES=${PARSE_AND_LIST_ARGS_CASES}' + case OPTION_SECTION_START: + case OPTION_TTEXT: + case OPTION_TBSS: + case OPTION_TDATA: + case OPTION_TTEXT_SEGMENT: + case OPTION_TRODATA_SEGMENT: + case OPTION_TLDATA_SEGMENT: + link_info.disable_target_specific_optimizations = 2; + return false; +' + +fragment <<EOF static void larch_elf_before_allocation (void) { diff --git a/ld/testsuite/ld-loongarch-elf/relax-ttext.s b/ld/testsuite/ld-loongarch-elf/relax-ttext.s new file mode 100644 index 0000000..1bbd85a --- /dev/null +++ b/ld/testsuite/ld-loongarch-elf/relax-ttext.s @@ -0,0 +1,13 @@ +# At relax pass 0, offset is 0x120204000-0x12000bff8=0x1f8008 < 0x200000 +# At relax pass 1, delete 0x7ff8 bytes NOP, +# offset is 0x120204000-0x120004000=0x200000 >= 0x200000, overflow +.text +.align 14 # delete at relax pass 1 +.fill 0x4000 +.align 14 # delete at relax pass 1 +la.local $t2, a # relax to pcaddi at relax pass 0 + +.section ".text1", "ax" + .fill 0x4000 +a: # 0x120204000 + ret diff --git a/ld/testsuite/ld-loongarch-elf/relax.exp b/ld/testsuite/ld-loongarch-elf/relax.exp index 35caa73..4771f1e 100644 --- a/ld/testsuite/ld-loongarch-elf/relax.exp +++ b/ld/testsuite/ld-loongarch-elf/relax.exp @@ -51,6 +51,18 @@ if [istarget loongarch64-*-*] { run_dump_test "relax-align-ignore-start" run_partial_linking_align_test + run_ld_link_tests \ + [list \ + [list \ + "loongarch relax ttext" \ + "" "" \ + "" \ + {relax-ttext.s} \ + {} \ + "relax-ttext" \ + ] \ + ] + set testname "loongarch relax .exe build" set pre_builds [list \ [list \ |