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tccelf: fix version patch for defined symbols

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previous patch seems to work only for bcheck.o and only because
it's loaded after libraries (which is maybe wrong too).
See commit 4c82b00342

section_ptr_add() already clears area to zeros

4 insertions(+), 11 deletions(-)
This commit is contained in:
grischka 2022-05-28 15:58:59 +02:00
parent 8482682061
commit 7d31904247
1 changed files with 4 additions and 11 deletions
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15
tccelf.c
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@ -565,9 +565,11 @@ version_add (TCCState *s1)
symtab = s1->dynsym;
end_sym = symtab->data_offset / sizeof (ElfSym);
versym = section_ptr_add(versym_section, end_sym * sizeof(ElfW(Half)));
for (sym_index = 0; sym_index < end_sym; ++sym_index) {
for (sym_index = 1; sym_index < end_sym; ++sym_index) {
int dllindex, verndx;
sym = &((ElfW(Sym) *)symtab->data)[sym_index];
if (sym->st_shndx != SHN_UNDEF)
continue; /* defined symbol doesn't need library version */
name = (char *) symtab->link->data + sym->st_name;
dllindex = find_elf_sym(s1->dynsymtab_section, name);
verndx = (dllindex && dllindex < nb_sym_to_version)
@ -576,8 +578,7 @@ version_add (TCCState *s1)
if (!sym_versions[verndx].out_index)
sym_versions[verndx].out_index = nb_versions++;
versym[sym_index] = sym_versions[verndx].out_index;
} else
versym[sym_index] = 0;
}
}
/* generate verneed section, but not when it will be empty. Some
dynamic linkers look at their contents even when DTVERNEEDNUM and
@ -3087,14 +3088,6 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
sym->st_info, sym->st_other,
sym->st_shndx, name);
old_to_new_syms[i] = sym_index;
#ifndef ELF_OBJ_ONLY
/* Remove version symbol if new value present */
sym_index = find_elf_sym(s1->dynsymtab_section, name);
if (sym_index && sym_index < nb_sym_to_version &&
sym->st_shndx != SHN_UNDEF &&
ELFW(ST_BIND)(sym->st_info) != STB_LOCAL)
sym_to_version[sym_index] = -1;
#endif
}
/* third pass to patch relocation entries */