diff options
| author | liuzhensong <liuzhensong@loongson.cn> | 2022-08-04 14:30:39 +0800 |
|---|---|---|
| committer | liuzhensong <liuzhensong@loongson.cn> | 2022-09-30 14:00:47 +0800 |
| commit | c4a7e6b56218e1d5a858682186b542e2eae01a4a (patch) | |
| tree | cc3a1b9f8227ed91cea78da16773225743d1ebc5 /bfd/elfnn-loongarch.c | |
| parent | 0d94a8735055432029237612a6eb9165db1ec9dd (diff) | |
| download | gdb-c4a7e6b56218e1d5a858682186b542e2eae01a4a.zip gdb-c4a7e6b56218e1d5a858682186b542e2eae01a4a.tar.gz gdb-c4a7e6b56218e1d5a858682186b542e2eae01a4a.tar.bz2 | |
LoongArch: Update ELF e_flags handling according to specification.
Update handling of e_flags according to the documentation
update [1] (discussions [2][3]).
Object file bitness is now represented in the EI_CLASS byte.
The e_flags field is now interpreted as follows:
e_flags[2:0]: Base ABI modifier
- 0x1: soft-float
- 0x2: single-precision hard-float
- 0x3: double-precision hard-float
e_flags[7:6]: ELF object ABI version
- 0x0: v0
- 0x1: v1
[1]: https://github.com/loongson/LoongArch-Documentation/blob/main/docs/LoongArch-ELF-ABI-EN.adoc#e_flags-identifies-abi-type-and-version
[2]: https://github.com/loongson/LoongArch-Documentation/pull/61
[3]: https://github.com/loongson/LoongArch-Documentation/pull/47
Diffstat (limited to 'bfd/elfnn-loongarch.c')
| -rw-r--r-- | bfd/elfnn-loongarch.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c index 33c85e5..c040c5b 100644 --- a/bfd/elfnn-loongarch.c +++ b/bfd/elfnn-loongarch.c @@ -416,8 +416,22 @@ elfNN_loongarch_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) elf_elfheader (obfd)->e_flags = in_flags; return true; } + else if (out_flags != in_flags) + { + if ((EF_LOONGARCH_IS_OBJ_V0 (out_flags) + && EF_LOONGARCH_IS_OBJ_V1 (in_flags)) + || (EF_LOONGARCH_IS_OBJ_V0 (in_flags) + && EF_LOONGARCH_IS_OBJ_V1 (out_flags))) + { + elf_elfheader (obfd)->e_flags |= EF_LOONGARCH_OBJABI_V1; + out_flags = elf_elfheader (obfd)->e_flags; + in_flags = out_flags; + } + } /* Disallow linking different ABIs. */ + /* Only check relocation version. + The obj_v0 is compatible with obj_v1. */ if (EF_LOONGARCH_ABI(out_flags ^ in_flags) & EF_LOONGARCH_ABI_MASK) { _bfd_error_handler (_("%pB: can't link different ABI object."), ibfd); @@ -1579,15 +1593,16 @@ loongarch_elf_size_dynamic_sections (bfd *output_bfd, if (bfd_link_executable (info) && !info->nointerp) { const char *interpreter; - flagword flags = elf_elfheader (output_bfd)->e_flags; s = bfd_get_linker_section (dynobj, ".interp"); BFD_ASSERT (s != NULL); - if (EF_LOONGARCH_IS_ILP32 (flags)) + + if (elf_elfheader (output_bfd)->e_ident[EI_CLASS] == ELFCLASS32) interpreter = "/lib32/ld.so.1"; - else if (EF_LOONGARCH_IS_LP64 (flags)) + else if (elf_elfheader (output_bfd)->e_ident[EI_CLASS] == ELFCLASS64) interpreter = "/lib64/ld.so.1"; else interpreter = "/lib/ld.so.1"; + s->contents = (unsigned char *) interpreter; s->size = strlen (interpreter) + 1; } |