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sparc: unify module.c

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o Copy module_64.c to module.c
o Add all sparc specific bits to module.c
o delete module_32.c
o update Makefile

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sam Ravnborg 2008-12-26 15:38:17 -08:00 committed by David S. Miller
parent 627bf2f678
commit e6b04fe0ba
3 changed files with 25 additions and 164 deletions
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2
arch/sparc/kernel/Makefile
View File

@ -68,7 +68,7 @@ obj-$(CONFIG_SPARC64_SMP) += hvtramp.o
obj-y += auxio_$(BITS).o
obj-$(CONFIG_SUN_PM) += apc.o pmc.o
obj-$(CONFIG_MODULES) += module_$(BITS).o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_MODULES) += sparc_ksyms_$(BITS).o
obj-$(CONFIG_SPARC_LED) += led.o
obj-$(CONFIG_KGDB) += kgdb_$(BITS).o

24
arch/sparc/kernel/module_64.c → arch/sparc/kernel/module.c
View File

@ -10,6 +10,7 @@
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/mm.h>
@ -36,6 +37,21 @@ static char *dot2underscore(char *name)
{
return name;
}
#else
static void *module_map(unsigned long size)
{
return vmalloc(size);
}
/* Replace references to .func with _Func */
static char *dot2underscore(char *name)
{
if (name[0] == '.') {
name[0] = '_';
name[1] = toupper(name[1]);
}
return name;
}
#endif /* CONFIG_SPARC64 */
void *module_alloc(unsigned long size)
@ -170,6 +186,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs,
#endif /* CONFIG_SPARC64 */
case R_SPARC_32:
case R_SPARC_UA32:
location[0] = v >> 24;
location[1] = v >> 16;
location[2] = v >> 8;
@ -224,6 +241,13 @@ int module_finalize(const Elf_Ehdr *hdr,
return 0;
}
#else
int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
return 0;
}
#endif /* CONFIG_SPARC64 */
void module_arch_cleanup(struct module *mod)

163
arch/sparc/kernel/module_32.c
View File

@ -1,163 +0,0 @@
/* Kernel module help for sparc32.
*
* Copyright (C) 2001 Rusty Russell.
* Copyright (C) 2002 David S. Miller.
*/
#include <linux/moduleloader.h>
#include <linux/kernel.h>
#include <linux/elf.h>
#include <linux/vmalloc.h>
#include <linux/fs.h>
#include <linux/string.h>
#include <linux/ctype.h>
void *module_alloc(unsigned long size)
{
void *ret;
/* We handle the zero case fine, unlike vmalloc */
if (size == 0)
return NULL;
ret = vmalloc(size);
if (!ret)
ret = ERR_PTR(-ENOMEM);
else
memset(ret, 0, size);
return ret;
}
/* Free memory returned from module_core_alloc/module_init_alloc */
void module_free(struct module *mod, void *module_region)
{
vfree(module_region);
/* FIXME: If module_region == mod->init_region, trim exception
table entries. */
}
/* Make generic code ignore STT_REGISTER dummy undefined symbols,
* and replace references to .func with _Func
*/
int module_frob_arch_sections(Elf_Ehdr *hdr,
Elf_Shdr *sechdrs,
char *secstrings,
struct module *mod)
{
unsigned int symidx;
Elf32_Sym *sym;
char *strtab;
int i;
for (symidx = 0; sechdrs[symidx].sh_type != SHT_SYMTAB; symidx++) {
if (symidx == hdr->e_shnum-1) {
printk("%s: no symtab found.\n", mod->name);
return -ENOEXEC;
}
}
sym = (Elf32_Sym *)sechdrs[symidx].sh_addr;
strtab = (char *)sechdrs[sechdrs[symidx].sh_link].sh_addr;
for (i = 1; i < sechdrs[symidx].sh_size / sizeof(Elf_Sym); i++) {
if (sym[i].st_shndx == SHN_UNDEF) {
if (ELF32_ST_TYPE(sym[i].st_info) == STT_REGISTER)
sym[i].st_shndx = SHN_ABS;
else {
char *name = strtab + sym[i].st_name;
if (name[0] == '.') {
name[0] = '_';
name[1] = toupper(name[1]);
}
}
}
}
return 0;
}
int apply_relocate(Elf32_Shdr *sechdrs,
const char *strtab,
unsigned int symindex,
unsigned int relsec,
struct module *me)
{
printk(KERN_ERR "module %s: non-ADD RELOCATION unsupported\n",
me->name);
return -ENOEXEC;
}
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;
u8 *location;
u32 *loc32;
for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
Elf32_Addr v;
/* This is where to make the change */
location = (u8 *)sechdrs[sechdrs[relsec].sh_info].sh_addr
+ rel[i].r_offset;
loc32 = (u32 *) location;
/* 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);
v = sym->st_value + rel[i].r_addend;
switch (ELF32_R_TYPE(rel[i].r_info)) {
case R_SPARC_32:
case R_SPARC_UA32:
location[0] = v >> 24;
location[1] = v >> 16;
location[2] = v >> 8;
location[3] = v >> 0;
break;
case R_SPARC_WDISP30:
v -= (Elf32_Addr) location;
*loc32 = (*loc32 & ~0x3fffffff) |
((v >> 2) & 0x3fffffff);
break;
case R_SPARC_WDISP22:
v -= (Elf32_Addr) location;
*loc32 = (*loc32 & ~0x3fffff) |
((v >> 2) & 0x3fffff);
break;
case R_SPARC_LO10:
*loc32 = (*loc32 & ~0x3ff) | (v & 0x3ff);
break;
case R_SPARC_HI22:
*loc32 = (*loc32 & ~0x3fffff) |
((v >> 10) & 0x3fffff);
break;
default:
printk(KERN_ERR "module %s: Unknown relocation: %x\n",
me->name,
(int) (ELF32_R_TYPE(rel[i].r_info) & 0xff));
return -ENOEXEC;
};
}
return 0;
}
int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
struct module *me)
{
return 0;
}
void module_arch_cleanup(struct module *mod)
{
}