mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 22:51:42 +00:00
7c79e1eef8
- Use pr_err_ratelimited() instead of deprecated printk_ratelimit(),
- Add dummies for validating format strings when debugging is
disabled,
- Convert from printk() to pr_*(),
- Correct printf()-style format specifiers.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/moduleloader.h>
|
|
#include <linux/elf.h>
|
|
#include <linux/vmalloc.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/string.h>
|
|
#include <linux/kernel.h>
|
|
|
|
#if 0
|
|
#define DEBUGP(fmt, ...) printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
|
|
#else
|
|
#define DEBUGP(fmt, ...) no_printk(KERN_DEBUG pr_fmt(fmt), ##__VA_ARGS__)
|
|
#endif
|
|
|
|
#ifdef CONFIG_MODULES
|
|
|
|
int apply_relocate(Elf32_Shdr *sechdrs,
|
|
const char *strtab,
|
|
unsigned int symindex,
|
|
unsigned int relsec,
|
|
struct module *me)
|
|
{
|
|
unsigned int i;
|
|
Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
|
|
Elf32_Sym *sym;
|
|
uint32_t *location;
|
|
|
|
DEBUGP("Applying relocate section %u to %u\n", relsec,
|
|
sechdrs[relsec].sh_info);
|
|
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
|
|
/* This is where to make the change */
|
|
location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
|
|
+ rel[i].r_offset;
|
|
/* This is the symbol it is referring to. Note that all
|
|
undefined symbols have been resolved. */
|
|
sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
|
|
+ ELF32_R_SYM(rel[i].r_info);
|
|
|
|
switch (ELF32_R_TYPE(rel[i].r_info)) {
|
|
case R_68K_32:
|
|
/* We add the value into the location given */
|
|
*location += sym->st_value;
|
|
break;
|
|
case R_68K_PC32:
|
|
/* Add the value, subtract its position */
|
|
*location += sym->st_value - (uint32_t)location;
|
|
break;
|
|
default:
|
|
pr_err("module %s: Unknown relocation: %u\n", me->name,
|
|
ELF32_R_TYPE(rel[i].r_info));
|
|
return -ENOEXEC;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int apply_relocate_add(Elf32_Shdr *sechdrs,
|
|
const char *strtab,
|
|
unsigned int symindex,
|
|
unsigned int relsec,
|
|
struct module *me)
|
|
{
|
|
unsigned int i;
|
|
Elf32_Rela *rel = (void *)sechdrs[relsec].sh_addr;
|
|
Elf32_Sym *sym;
|
|
uint32_t *location;
|
|
|
|
DEBUGP("Applying relocate_add section %u to %u\n", relsec,
|
|
sechdrs[relsec].sh_info);
|
|
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
|
|
/* This is where to make the change */
|
|
location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
|
|
+ rel[i].r_offset;
|
|
/* This is the symbol it is referring to. Note that all
|
|
undefined symbols have been resolved. */
|
|
sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
|
|
+ ELF32_R_SYM(rel[i].r_info);
|
|
|
|
switch (ELF32_R_TYPE(rel[i].r_info)) {
|
|
case R_68K_32:
|
|
/* We add the value into the location given */
|
|
*location = rel[i].r_addend + sym->st_value;
|
|
break;
|
|
case R_68K_PC32:
|
|
/* Add the value, subtract its position */
|
|
*location = rel[i].r_addend + sym->st_value - (uint32_t)location;
|
|
break;
|
|
default:
|
|
pr_err("module %s: Unknown relocation: %u\n", me->name,
|
|
ELF32_R_TYPE(rel[i].r_info));
|
|
return -ENOEXEC;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int module_finalize(const Elf_Ehdr *hdr,
|
|
const Elf_Shdr *sechdrs,
|
|
struct module *mod)
|
|
{
|
|
module_fixup(mod, mod->arch.fixup_start, mod->arch.fixup_end);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* CONFIG_MODULES */
|
|
|
|
void module_fixup(struct module *mod, struct m68k_fixup_info *start,
|
|
struct m68k_fixup_info *end)
|
|
{
|
|
#ifdef CONFIG_MMU
|
|
struct m68k_fixup_info *fixup;
|
|
|
|
for (fixup = start; fixup < end; fixup++) {
|
|
switch (fixup->type) {
|
|
case m68k_fixup_memoffset:
|
|
*(u32 *)fixup->addr = m68k_memoffset;
|
|
break;
|
|
case m68k_fixup_vnode_shift:
|
|
*(u16 *)fixup->addr += m68k_virt_to_node_shift;
|
|
break;
|
|
}
|
|
}
|
|
#endif
|
|
}
|