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ELF Relocatable: make undefined global symbol STT_NOTYPE

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If undefined global symbols in ELF Relocatable files are not of
type STT_NOTYPE, it will confuse binutils bfd and corrupt product
files.
This commit is contained in:
Sylvain BERTRAND 2023-10-24 18:13:39 +00:00
parent 08c777053c
commit f44060f8fc
1 changed files with 5 additions and 0 deletions
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5
tccelf.c
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@ -176,6 +176,11 @@ ST_FUNC void tccelf_end_file(TCCState *s1)
if (sym->st_shndx == SHN_UNDEF if (sym->st_shndx == SHN_UNDEF
&& ELFW(ST_BIND)(sym->st_info) == STB_LOCAL) && ELFW(ST_BIND)(sym->st_info) == STB_LOCAL)
sym->st_info = ELFW(ST_INFO)(STB_GLOBAL, ELFW(ST_TYPE)(sym->st_info)); sym->st_info = ELFW(ST_INFO)(STB_GLOBAL, ELFW(ST_TYPE)(sym->st_info));
/* An ELF relocatable file should have the types of its undefined global symbol set
to STT_NOTYPE or it will confuse binutils bfd */
if (s1->output_format == TCC_OUTPUT_FORMAT_ELF && s1->output_type == TCC_OUTPUT_OBJ)
if (sym->st_shndx == SHN_UNDEF && ELFW(ST_BIND)(sym->st_info) == STB_GLOBAL)
sym->st_info = ELFW(ST_INFO)(STB_GLOBAL, ELFW(ST_TYPE)(STT_NOTYPE));
tr[i] = set_elf_sym(s, sym->st_value, sym->st_size, sym->st_info, tr[i] = set_elf_sym(s, sym->st_value, sym->st_size, sym->st_info,
sym->st_other, sym->st_shndx, (char*)s->link->data + sym->st_name); sym->st_other, sym->st_shndx, (char*)s->link->data + sym->st_name);
} }