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Ignore relocs to ignored sections as well

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relocs to sections which we ignore should be ignored as well,
they have no meaning and currently would segfault.
This commit is contained in:
Michael Matz 2019-01-05 00:10:37 +01:00
parent 4c2b55f962
commit eaf5f3fa52
1 changed files with 11 additions and 11 deletions
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22
tccelf.c
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@ -2302,7 +2302,7 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
ElfW(Ehdr) ehdr;
ElfW(Shdr) *shdr, *sh;
int size, i, j, offset, offseti, nb_syms, sym_index, ret, seencompressed;
unsigned char *strsec, *strtab;
char *strsec, *strtab;
int *old_to_new_syms;
char *sh_name, *name;
SectionMergeInfo *sm_table, *sm;
@ -2368,10 +2368,10 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
if (i == ehdr.e_shstrndx)
continue;
sh = &shdr[i];
sh_name = (char *) strsec + sh->sh_name;
/* ignore sections types we do not handle */
if (sh->sh_type == SHT_RELX)
sh = &shdr[sh->sh_info];
/* ignore sections types we do not handle (plus relocs to those) */
if (sh->sh_type != SHT_PROGBITS &&
sh->sh_type != SHT_RELX &&
#ifdef TCC_ARM_EABI
sh->sh_type != SHT_ARM_EXIDX &&
#endif
@ -2379,15 +2379,15 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
sh->sh_type != SHT_PREINIT_ARRAY &&
sh->sh_type != SHT_INIT_ARRAY &&
sh->sh_type != SHT_FINI_ARRAY &&
strcmp(sh_name, ".stabstr")
strcmp(strsec + sh->sh_name, ".stabstr")
)
continue;
if (seencompressed
&& (!strncmp(sh_name, ".debug_", sizeof(".debug_")-1)
|| (sh->sh_type == SHT_RELX
&& !strncmp((char*)strsec + shdr[sh->sh_info].sh_name,
".debug_", sizeof(".debug_")-1))))
&& !strncmp(strsec + sh->sh_name, ".debug_", sizeof(".debug_")-1))
continue;
sh = &shdr[i];
sh_name = strsec + sh->sh_name;
if (sh->sh_addralign < 1)
sh->sh_addralign = 1;
/* find corresponding section, if any */
@ -2505,7 +2505,7 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
already defined symbol. It is very important to get
correct relocations */
if (ELFW(ST_BIND)(sym->st_info) != STB_LOCAL) {
name = (char *) strtab + sym->st_name;
name = strtab + sym->st_name;
sym_index = find_elf_sym(symtab_section, name);
if (sym_index)
old_to_new_syms[i] = sym_index;
@ -2521,7 +2521,7 @@ ST_FUNC int tcc_load_object_file(TCCState *s1,
sym->st_value += sm->offset;
}
/* add symbol */
name = (char *) strtab + sym->st_name;
name = strtab + sym->st_name;
sym_index = set_elf_sym(symtab_section, sym->st_value, sym->st_size,
sym->st_info, sym->st_other,
sym->st_shndx, name);