diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/Makefile | 6 | ||||
| -rw-r--r-- | arch/mips/kernel/module-elf32.c | 250 | ||||
| -rw-r--r-- | arch/mips/kernel/module-elf64.c | 274 | ||||
| -rw-r--r-- | arch/mips/kernel/module.c | 336 |
4 files changed, 337 insertions, 529 deletions
diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index d3303584fbd..d54964d52c8 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -11,11 +11,7 @@ obj-y += cpu-probe.o branch.o entry.o genex.o irq.o process.o \ binfmt_irix-objs := irixelf.o irixinv.o irixioctl.o irixsig.o \ irix5sys.o sysirix.o -ifdef CONFIG_MODULES -obj-y += mips_ksyms.o module.o -obj-$(CONFIG_32BIT) += module-elf32.o -obj-$(CONFIG_64BIT) += module-elf64.o -endif +obj-$(CONFIG_MODULES) += mips_ksyms.o module.o obj-$(CONFIG_CPU_R3000) += r2300_fpu.o r2300_switch.o obj-$(CONFIG_CPU_TX39XX) += r2300_fpu.o r2300_switch.o diff --git a/arch/mips/kernel/module-elf32.c b/arch/mips/kernel/module-elf32.c deleted file mode 100644 index ffd216d6d6d..00000000000 --- a/arch/mips/kernel/module-elf32.c +++ /dev/null @@ -1,250 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Copyright (C) 2001 Rusty Russell. - * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) - */ - -#undef DEBUG - -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> - -struct mips_hi16 { - struct mips_hi16 *next; - Elf32_Addr *addr; - Elf32_Addr value; -}; - -static struct mips_hi16 *mips_hi16_list; - -void *module_alloc(unsigned long size) -{ - if (size == 0) - return NULL; - return vmalloc(size); -} - - -/* Free memory returned from module_alloc */ -void module_free(struct module *mod, void *module_region) -{ - vfree(module_region); - /* FIXME: If module_region == mod->init_region, trim exception - table entries. */ -} - -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; -} - -static int apply_r_mips_none(struct module *me, uint32_t *location, - Elf32_Addr v) -{ - return 0; -} - -static int apply_r_mips_32(struct module *me, uint32_t *location, - Elf32_Addr v) -{ - *location += v; - - return 0; -} - -static int apply_r_mips_26(struct module *me, uint32_t *location, - Elf32_Addr v) -{ - if (v % 4) { - printk(KERN_ERR "module %s: dangerous relocation\n", me->name); - return -ENOEXEC; - } - - if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { - printk(KERN_ERR - "module %s: relocation overflow\n", - me->name); - return -ENOEXEC; - } - - *location = (*location & ~0x03ffffff) | - ((*location + (v >> 2)) & 0x03ffffff); - - return 0; -} - -static int apply_r_mips_hi16(struct module *me, uint32_t *location, - Elf32_Addr v) -{ - struct mips_hi16 *n; - - /* - * We cannot relocate this one now because we don't know the value of - * the carry we need to add. Save the information, and let LO16 do the - * actual relocation. - */ - n = kmalloc(sizeof *n, GFP_KERNEL); - if (!n) - return -ENOMEM; - - n->addr = location; - n->value = v; - n->next = mips_hi16_list; - mips_hi16_list = n; - - return 0; -} - -static int apply_r_mips_lo16(struct module *me, uint32_t *location, - Elf32_Addr v) -{ - unsigned long insnlo = *location; - Elf32_Addr val, vallo; - - /* Sign extend the addend we extract from the lo insn. */ - vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000; - - if (mips_hi16_list != NULL) { - struct mips_hi16 *l; - - l = mips_hi16_list; - while (l != NULL) { - struct mips_hi16 *next; - unsigned long insn; - - /* - * The value for the HI16 had best be the same. - */ - if (v != l->value) - goto out_danger; - - /* - * Do the HI16 relocation. Note that we actually don't - * need to know anything about the LO16 itself, except - * where to find the low 16 bits of the addend needed - * by the LO16. - */ - insn = *l->addr; - val = ((insn & 0xffff) << 16) + vallo; - val += v; - - /* - * Account for the sign extension that will happen in - * the low bits. - */ - val = ((val >> 16) + ((val & 0x8000) != 0)) & 0xffff; - - insn = (insn & ~0xffff) | val; - *l->addr = insn; - - next = l->next; - kfree(l); - l = next; - } - - mips_hi16_list = NULL; - } - - /* - * Ok, we're done with the HI16 relocs. Now deal with the LO16. - */ - val = v + vallo; - insnlo = (insnlo & ~0xffff) | (val & 0xffff); - *location = insnlo; - - return 0; - -out_danger: - printk(KERN_ERR "module %s: dangerous " "relocation\n", me->name); - - return -ENOEXEC; -} - -static int (*reloc_handlers[]) (struct module *me, uint32_t *location, - Elf32_Addr v) = { - [R_MIPS_NONE] = apply_r_mips_none, - [R_MIPS_32] = apply_r_mips_32, - [R_MIPS_26] = apply_r_mips_26, - [R_MIPS_HI16] = apply_r_mips_hi16, - [R_MIPS_LO16] = apply_r_mips_lo16 -}; - -int apply_relocate(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - Elf32_Rel *rel = (void *) sechdrs[relsec].sh_addr; - Elf32_Sym *sym; - uint32_t *location; - unsigned int i; - Elf32_Addr v; - int res; - - pr_debug("Applying relocate section %u to %u\n", relsec, - sechdrs[relsec].sh_info); - - for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) { - Elf32_Word r_info = rel[i].r_info; - - /* 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 */ - sym = (Elf32_Sym *)sechdrs[symindex].sh_addr - + ELF32_R_SYM(r_info); - if (!sym->st_value) { - printk(KERN_WARNING "%s: Unknown symbol %s\n", - me->name, strtab + sym->st_name); - return -ENOENT; - } - - v = sym->st_value; - - res = reloc_handlers[ELF32_R_TYPE(r_info)](me, location, v); - if (res) - return res; - } - - return 0; -} - -int apply_relocate_add(Elf32_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - /* - * Current binutils always generate .rela relocations. Keep smiling - * if it's empty, abort otherwise. - */ - if (!sechdrs[relsec].sh_size) - return 0; - - printk(KERN_ERR "module %s: ADD RELOCATION unsupported\n", - me->name); - return -ENOEXEC; -} diff --git a/arch/mips/kernel/module-elf64.c b/arch/mips/kernel/module-elf64.c deleted file mode 100644 index e804792ee1e..00000000000 --- a/arch/mips/kernel/module-elf64.c +++ /dev/null @@ -1,274 +0,0 @@ -/* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * Copyright (C) 2001 Rusty Russell. - * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) - */ - -#undef DEBUG - -#include <linux/moduleloader.h> -#include <linux/elf.h> -#include <linux/vmalloc.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/string.h> -#include <linux/kernel.h> - -struct mips_hi16 { - struct mips_hi16 *next; - Elf32_Addr *addr; - Elf64_Addr value; -}; - -static struct mips_hi16 *mips_hi16_list; - -void *module_alloc(unsigned long size) -{ - if (size == 0) - return NULL; - return vmalloc(size); -} - - -/* Free memory returned from module_alloc */ -void module_free(struct module *mod, void *module_region) -{ - vfree(module_region); - /* FIXME: If module_region == mod->init_region, trim exception - table entries. */ -} - -int module_frob_arch_sections(Elf_Ehdr *hdr, - Elf_Shdr *sechdrs, - char *secstrings, - struct module *mod) -{ - return 0; -} - -int apply_relocate(Elf64_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - /* - * We don't want to deal with REL relocations - RELA is so much saner. - */ - if (!sechdrs[relsec].sh_size) - return 0; - - printk(KERN_ERR "module %s: REL relocation unsupported\n", - me->name); - return -ENOEXEC; -} - -static int apply_r_mips_none(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - return 0; -} - -static int apply_r_mips_32(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - *location = v; - - return 0; -} - -static int apply_r_mips_26(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - if (v % 4) { - printk(KERN_ERR "module %s: dangerous relocation\n", me->name); - return -ENOEXEC; - } - - if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { - printk(KERN_ERR - "module %s: relocation overflow\n", - me->name); - return -ENOEXEC; - } - - *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); - - return 0; -} - -static int apply_r_mips_hi16(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - struct mips_hi16 *n; - - /* - * We cannot relocate this one now because we don't know the value of - * the carry we need to add. Save the information, and let LO16 do the - * actual relocation. - */ - n = kmalloc(sizeof *n, GFP_KERNEL); - if (!n) - return -ENOMEM; - - n->addr = location; - n->value = v; - n->next = mips_hi16_list; - mips_hi16_list = n; - - return 0; -} - -static int apply_r_mips_lo16(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - unsigned long insnlo = *location; - Elf32_Addr val, vallo; - - /* Sign extend the addend we extract from the lo insn. */ - vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000; - - if (mips_hi16_list != NULL) { - struct mips_hi16 *l; - - l = mips_hi16_list; - while (l != NULL) { - struct mips_hi16 *next; - unsigned long insn; - - /* - * The value for the HI16 had best be the same. - */ - if (v != l->value) - goto out_danger; - - /* - * Do the HI16 relocation. Note that we actually don't - * need to know anything about the LO16 itself, except - * where to find the low 16 bits of the addend needed - * by the LO16. - */ - insn = *l->addr; - val = ((insn & 0xffff) << 16) + vallo; - val += v; - - /* - * Account for the sign extension that will happen in - * the low bits. - */ - val = ((val >> 16) + ((val & 0x8000) != 0)) & 0xffff; - - insn = (insn & ~0xffff) | val; - *l->addr = insn; - - next = l->next; - kfree(l); - l = next; - } - - mips_hi16_list = NULL; - } - - /* - * Ok, we're done with the HI16 relocs. Now deal with the LO16. - */ - insnlo = (insnlo & ~0xffff) | (v & 0xffff); - *location = insnlo; - - return 0; - -out_danger: - printk(KERN_ERR "module %s: dangerous " "relocation\n", me->name); - - return -ENOEXEC; -} - -static int apply_r_mips_64(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - *(uint64_t *) location = v; - - return 0; -} - - -static int apply_r_mips_higher(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - *location = (*location & 0xffff0000) | - ((((long long) v + 0x80008000LL) >> 32) & 0xffff); - - return 0; -} - -static int apply_r_mips_highest(struct module *me, uint32_t *location, - Elf64_Addr v) -{ - *location = (*location & 0xffff0000) | - ((((long long) v + 0x800080008000LL) >> 48) & 0xffff); - - return 0; -} - -static int (*reloc_handlers[]) (struct module *me, uint32_t *location, - Elf64_Addr v) = { - [R_MIPS_NONE] = apply_r_mips_none, - [R_MIPS_32] = apply_r_mips_32, - [R_MIPS_26] = apply_r_mips_26, - [R_MIPS_HI16] = apply_r_mips_hi16, - [R_MIPS_LO16] = apply_r_mips_lo16, - [R_MIPS_64] = apply_r_mips_64, - [R_MIPS_HIGHER] = apply_r_mips_higher, - [R_MIPS_HIGHEST] = apply_r_mips_highest -}; - -int apply_relocate_add(Elf64_Shdr *sechdrs, - const char *strtab, - unsigned int symindex, - unsigned int relsec, - struct module *me) -{ - Elf64_Mips_Rela *rel = (void *) sechdrs[relsec].sh_addr; - Elf64_Sym *sym; - uint32_t *location; - unsigned int i; - Elf64_Addr v; - int res; - - pr_debug("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 */ - sym = (Elf64_Sym *)sechdrs[symindex].sh_addr + rel[i].r_sym; - if (!sym->st_value) { - printk(KERN_WARNING "%s: Unknown symbol %s\n", - me->name, strtab + sym->st_name); - return -ENOENT; - } - - v = sym->st_value; - - res = reloc_handlers[rel[i].r_type](me, location, v); - if (res) - return res; - } - - return 0; -} diff --git a/arch/mips/kernel/module.c b/arch/mips/kernel/module.c index 458af3c7a63..e54a7f442f8 100644 --- a/arch/mips/kernel/module.c +++ b/arch/mips/kernel/module.c @@ -1,9 +1,345 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Copyright (C) 2001 Rusty Russell. + * Copyright (C) 2003, 2004 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2005 Thiemo Seufer + */ + +#undef DEBUG + +#include <linux/moduleloader.h> +#include <linux/elf.h> +#include <linux/vmalloc.h> +#include <linux/slab.h> +#include <linux/fs.h> +#include <linux/string.h> +#include <linux/kernel.h> #include <linux/module.h> #include <linux/spinlock.h> +struct mips_hi16 { + struct mips_hi16 *next; + Elf_Addr *addr; + Elf_Addr value; +}; + +static struct mips_hi16 *mips_hi16_list; + static LIST_HEAD(dbe_list); static DEFINE_SPINLOCK(dbe_lock); +void *module_alloc(unsigned long size) +{ + if (size == 0) + return NULL; + return vmalloc(size); +} + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ +} + +int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs, + char *secstrings, struct module *mod) +{ + return 0; +} + +static int apply_r_mips_none(struct module *me, u32 *location, Elf_Addr v) +{ + return 0; +} + +static int apply_r_mips_32_rel(struct module *me, u32 *location, Elf_Addr v) +{ + *location += v; + + return 0; +} + +static int apply_r_mips_32_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = v; + + return 0; +} + +static int apply_r_mips_26_rel(struct module *me, u32 *location, Elf_Addr v) +{ + if (v % 4) { + printk(KERN_ERR "module %s: dangerous relocation\n", me->name); + return -ENOEXEC; + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { + printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); + return -ENOEXEC; + } + + *location = (*location & ~0x03ffffff) | + ((*location + (v >> 2)) & 0x03ffffff); + + return 0; +} + +static int apply_r_mips_26_rela(struct module *me, u32 *location, Elf_Addr v) +{ + if (v % 4) { + printk(KERN_ERR "module %s: dangerous relocation\n", me->name); + return -ENOEXEC; + } + + if ((v & 0xf0000000) != (((unsigned long)location + 4) & 0xf0000000)) { + printk(KERN_ERR + "module %s: relocation overflow\n", + me->name); + return -ENOEXEC; + } + + *location = (*location & ~0x03ffffff) | ((v >> 2) & 0x03ffffff); + + return 0; +} + +static int apply_r_mips_hi16_rel(struct module *me, u32 *location, Elf_Addr v) +{ + struct mips_hi16 *n; + + /* + * We cannot relocate this one now because we don't know the value of + * the carry we need to add. Save the information, and let LO16 do the + * actual relocation. + */ + n = kmalloc(sizeof *n, GFP_KERNEL); + if (!n) + return -ENOMEM; + + n->addr = (Elf_Addr *)location; + n->value = v; + n->next = mips_hi16_list; + mips_hi16_list = n; + + return 0; +} + +static int apply_r_mips_hi16_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x8000LL) >> 16) & 0xffff); + + return 0; +} + +static int apply_r_mips_lo16_rel(struct module *me, u32 *location, Elf_Addr v) +{ + unsigned long insnlo = *location; + Elf_Addr val, vallo; + + /* Sign extend the addend we extract from the lo insn. */ + vallo = ((insnlo & 0xffff) ^ 0x8000) - 0x8000; + + if (mips_hi16_list != NULL) { + struct mips_hi16 *l; + + l = mips_hi16_list; + while (l != NULL) { + struct mips_hi16 *next; + unsigned long insn; + + /* + * The value for the HI16 had best be the same. + */ + if (v != l->value) + goto out_danger; + + /* + * Do the HI16 relocation. Note that we actually don't + * need to know anything about the LO16 itself, except + * where to find the low 16 bits of the addend needed + * by the LO16. + */ + insn = *l->addr; + val = ((insn & 0xffff) << 16) + vallo; + val += v; + + /* + * Account for the sign extension that will happen in + * the low bits. + */ + val = ((val >> 16) + ((val & 0x8000) != 0)) & 0xffff; + + insn = (insn & ~0xffff) | val; + *l->addr = insn; + + next = l->next; + kfree(l); + l = next; + } + + mips_hi16_list = NULL; + } + + /* + * Ok, we're done with the HI16 relocs. Now deal with the LO16. + */ + val = v + vallo; + insnlo = (insnlo & ~0xffff) | (val & 0xffff); + *location = insnlo; + + return 0; + +out_danger: + printk(KERN_ERR "module %s: dangerous " "relocation\n", me->name); + + return -ENOEXEC; +} + +static int apply_r_mips_lo16_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *location = (*location & 0xffff0000) | (v & 0xffff); + + return 0; +} + +static int apply_r_mips_64_rela(struct module *me, u32 *location, Elf_Addr v) +{ + *(Elf_Addr *)location = v; + + return 0; +} + +static int apply_r_mips_higher_rela(struct module *me, u32 *location, + Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x80008000LL) >> 32) & 0xffff); + + return 0; +} + +static int apply_r_mips_highest_rela(struct module *me, u32 *location, + Elf_Addr v) +{ + *location = (*location & 0xffff0000) | + ((((long long) v + 0x800080008000LL) >> 48) & 0xffff); + + return 0; +} + +static int (*reloc_handlers_rel[]) (struct module *me, u32 *location, + Elf_Addr v) = { + [R_MIPS_NONE] = apply_r_mips_none, + [R_MIPS_32] = apply_r_mips_32_rel, + [R_MIPS_26] = apply_r_mips_26_rel, + [R_MIPS_HI16] = apply_r_mips_hi16_rel, + [R_MIPS_LO16] = apply_r_mips_lo16_rel +}; + +static int (*reloc_handlers_rela[]) (struct module *me, u32 *location, + Elf_Addr v) = { + [R_MIPS_NONE] = apply_r_mips_none, + [R_MIPS_32] = apply_r_mips_32_rela, + [R_MIPS_26] = apply_r_mips_26_rela, + [R_MIPS_HI16] = apply_r_mips_hi16_rela, + [R_MIPS_LO16] = apply_r_mips_lo16_rela, + [R_MIPS_64] = apply_r_mips_64_rela, + [R_MIPS_HIGHER] = apply_r_mips_higher_rela, + [R_MIPS_HIGHEST] = apply_r_mips_highest_rela +}; + +int apply_relocate(Elf_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relsec, + struct module *me) +{ + Elf_Mips_Rel *rel = (void *) sechdrs[relsec].sh_addr; + Elf_Sym *sym; + u32 *location; + unsigned int i; + Elf_Addr v; + int res; + + pr_debug("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 */ + sym = (Elf_Sym *)sechdrs[symindex].sh_addr + + ELF_MIPS_R_SYM(rel[i]); + if (!sym->st_value) { + printk(KERN_WARNING "%s: Unknown symbol %s\n", + me->name, strtab + sym->st_name); + return -ENOENT; + } + + v = sym->st_value; + + res = reloc_handlers_rel[ELF_MIPS_R_TYPE(rel[i])](me, location, v); + if (res) + return res; + } + + return 0; +} + +int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, + unsigned int symindex, unsigned int relsec, + struct module *me) +{ + Elf_Mips_Rela *rel = (void *) sechdrs[relsec].sh_addr; + Elf_Sym *sym; + u32 *location; + unsigned int i; + Elf_Addr v; + int res; + + pr_debug("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 */ + sym = (Elf_Sym *)sechdrs[symindex].sh_addr + + ELF_MIPS_R_SYM(rel[i]); + if (!sym->st_value) { + printk(KERN_WARNING "%s: Unknown symbol %s\n", + me->name, strtab + sym->st_name); + return -ENOENT; + } + + v = sym->st_value + rel[i].r_addend; + + res = reloc_handlers_rela[ELF_MIPS_R_TYPE(rel[i])](me, location, v); + if (res) + return res; + } + + return 0; +} + /* Given an address, look for it in the module exception tables. */ const struct exception_table_entry *search_module_dbetables(unsigned long addr) { |