int
module_frob_arch_sections(Elf64_Ehdr *hdr, Elf64_Shdr *sechdrs,
char *secstrings, struct module *me)
{
struct got_entry *chains;
Elf64_Rela *rela;
Elf64_Shdr *esechdrs, *symtab, *s, *got;
unsigned long nsyms, nrela, i;
esechdrs = sechdrs + hdr->e_shnum;
symtab = got = NULL;
/* Find out how large the symbol table is. Allocate one got_entry
head per symbol. Normally this will be enough, but not always.
We'll chain different offsets for the symbol down each head. */
for (s = sechdrs; s < esechdrs; ++s)
if (s->sh_type == SHT_SYMTAB)
symtab = s;
else if (!strcmp(".got", secstrings + s->sh_name)) {
got = s;
me->arch.gotsecindex = s - sechdrs;
}
if (!symtab) {
printk(KERN_ERR "module %s: no symbol table\n", me->name);
return -ENOEXEC;
}
if (!got) {
printk(KERN_ERR "module %s: no got section\n", me->name);
return -ENOEXEC;
}
nsyms = symtab->sh_size / sizeof(Elf64_Sym);
chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL);
if (!chains) {
printk(KERN_ERR
"module %s: no memory for symbol chain buffer\n",
me->name);
return -ENOMEM;
}
got->sh_size = 0;
got->sh_addralign = 8;
got->sh_type = SHT_NOBITS;
/* Examine all LITERAL relocations to find out what GOT entries
are required. This sizes the GOT section as well. */
for (s = sechdrs; s < esechdrs; ++s)
if (s->sh_type == SHT_RELA) {
nrela = s->sh_size / sizeof(Elf64_Rela);
rela = (void *)hdr + s->sh_offset;
for (i = 0; i < nrela; ++i)
process_reloc_for_got(rela+i, chains,
&got->sh_size);
}
/* Free the memory we allocated. */
for (i = 0; i < nsyms; ++i) {
struct got_entry *g, *n;
for (g = chains[i].next; g ; g = n) {
n = g->next;
kfree(g);
}
}
kfree(chains);
return 0;
}
int
module_frob_arch_sections(Elf64_Ehdr *hdr, Elf64_Shdr *sechdrs,
char *secstrings, struct module *me)
{
struct got_entry *chains;
Elf64_Rela *rela;
Elf64_Shdr *esechdrs, *symtab, *s, *got;
unsigned long nsyms, nrela, i;
esechdrs = sechdrs + hdr->e_shnum;
symtab = got = NULL;
for (s = sechdrs; s < esechdrs; ++s)
if (s->sh_type == SHT_SYMTAB)
symtab = s;
else if (!strcmp(".got", secstrings + s->sh_name)) {
got = s;
me->arch.gotsecindex = s - sechdrs;
}
if (!symtab) {
printk(KERN_ERR "module %s: no symbol table\n", me->name);
return -ENOEXEC;
}
if (!got) {
printk(KERN_ERR "module %s: no got section\n", me->name);
return -ENOEXEC;
}
nsyms = symtab->sh_size / sizeof(Elf64_Sym);
chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL);
if (!chains) {
printk(KERN_ERR
"module %s: no memory for symbol chain buffer\n",
me->name);
return -ENOMEM;
}
got->sh_size = 0;
got->sh_addralign = 8;
got->sh_type = SHT_NOBITS;
for (s = sechdrs; s < esechdrs; ++s)
if (s->sh_type == SHT_RELA) {
nrela = s->sh_size / sizeof(Elf64_Rela);
rela = (void *)hdr + s->sh_offset;
for (i = 0; i < nrela; ++i)
process_reloc_for_got(rela+i, chains,
&got->sh_size);
}
for (i = 0; i < nsyms; ++i) {
struct got_entry *g, *n;
for (g = chains[i].next; g ; g = n) {
n = g->next;
kfree(g);
}
}
kfree(chains);
return 0;
}
