diff options
| -rw-r--r-- | arch/arm/include/asm/module.h | 15 | ||||
| -rw-r--r-- | arch/arm/kernel/module.c | 106 |
2 files changed, 56 insertions, 65 deletions
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index cbb0bc295d2..12c8e680cbf 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -8,11 +8,6 @@ struct unwind_table; #ifdef CONFIG_ARM_UNWIND -struct arm_unwind_mapping { - Elf_Shdr *unw_sec; - Elf_Shdr *sec_text; - struct unwind_table *unwind; -}; enum { ARM_SEC_INIT, ARM_SEC_DEVINIT, @@ -21,13 +16,13 @@ enum { ARM_SEC_DEVEXIT, ARM_SEC_MAX, }; +#endif + struct mod_arch_specific { - struct arm_unwind_mapping map[ARM_SEC_MAX]; -}; -#else -struct mod_arch_specific { -}; +#ifdef CONFIG_ARM_UNWIND + struct unwind_table *unwind[ARM_SEC_MAX]; #endif +}; /* * Include the ARM architecture version. diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c index d9bd786ce23..f9937c4b7d1 100644 --- a/arch/arm/kernel/module.c +++ b/arch/arm/kernel/module.c @@ -67,35 +67,6 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, char *secstrings, struct module *mod) { -#ifdef CONFIG_ARM_UNWIND - Elf_Shdr *s, *sechdrs_end = sechdrs + hdr->e_shnum; - struct arm_unwind_mapping *maps = mod->arch.map; - - for (s = sechdrs; s < sechdrs_end; s++) { - char const *secname = secstrings + s->sh_name; - - if (strcmp(".ARM.exidx.init.text", secname) == 0) - maps[ARM_SEC_INIT].unw_sec = s; - else if (strcmp(".ARM.exidx.devinit.text", secname) == 0) - maps[ARM_SEC_DEVINIT].unw_sec = s; - else if (strcmp(".ARM.exidx", secname) == 0) - maps[ARM_SEC_CORE].unw_sec = s; - else if (strcmp(".ARM.exidx.exit.text", secname) == 0) - maps[ARM_SEC_EXIT].unw_sec = s; - else if (strcmp(".ARM.exidx.devexit.text", secname) == 0) - maps[ARM_SEC_DEVEXIT].unw_sec = s; - else if (strcmp(".init.text", secname) == 0) - maps[ARM_SEC_INIT].sec_text = s; - else if (strcmp(".devinit.text", secname) == 0) - maps[ARM_SEC_DEVINIT].sec_text = s; - else if (strcmp(".text", secname) == 0) - maps[ARM_SEC_CORE].sec_text = s; - else if (strcmp(".exit.text", secname) == 0) - maps[ARM_SEC_EXIT].sec_text = s; - else if (strcmp(".devexit.text", secname) == 0) - maps[ARM_SEC_DEVEXIT].sec_text = s; - } -#endif return 0; } @@ -300,41 +271,66 @@ apply_relocate_add(Elf32_Shdr *sechdrs, const char *strtab, return -ENOEXEC; } -#ifdef CONFIG_ARM_UNWIND -static void register_unwind_tables(struct module *mod) +struct mod_unwind_map { + const Elf_Shdr *unw_sec; + const Elf_Shdr *txt_sec; +}; + +int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, + struct module *mod) { +#ifdef CONFIG_ARM_UNWIND + const char *secstrs = (void *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; + const Elf_Shdr *s, *sechdrs_end = sechdrs + hdr->e_shnum; + struct mod_unwind_map maps[ARM_SEC_MAX]; int i; - for (i = 0; i < ARM_SEC_MAX; ++i) { - struct arm_unwind_mapping *map = &mod->arch.map[i]; - if (map->unw_sec && map->sec_text) - map->unwind = unwind_table_add(map->unw_sec->sh_addr, - map->unw_sec->sh_size, - map->sec_text->sh_addr, - map->sec_text->sh_size); + + memset(maps, 0, sizeof(maps)); + + for (s = sechdrs; s < sechdrs_end; s++) { + const char *secname = secstrs + s->sh_name; + + if (strcmp(".ARM.exidx.init.text", secname) == 0) + maps[ARM_SEC_INIT].unw_sec = s; + else if (strcmp(".ARM.exidx.devinit.text", secname) == 0) + maps[ARM_SEC_DEVINIT].unw_sec = s; + else if (strcmp(".ARM.exidx", secname) == 0) + maps[ARM_SEC_CORE].unw_sec = s; + else if (strcmp(".ARM.exidx.exit.text", secname) == 0) + maps[ARM_SEC_EXIT].unw_sec = s; + else if (strcmp(".ARM.exidx.devexit.text", secname) == 0) + maps[ARM_SEC_DEVEXIT].unw_sec = s; + else if (strcmp(".init.text", secname) == 0) + maps[ARM_SEC_INIT].txt_sec = s; + else if (strcmp(".devinit.text", secname) == 0) + maps[ARM_SEC_DEVINIT].txt_sec = s; + else if (strcmp(".text", secname) == 0) + maps[ARM_SEC_CORE].txt_sec = s; + else if (strcmp(".exit.text", secname) == 0) + maps[ARM_SEC_EXIT].txt_sec = s; + else if (strcmp(".devexit.text", secname) == 0) + maps[ARM_SEC_DEVEXIT].txt_sec = s; } -} -static void unregister_unwind_tables(struct module *mod) -{ - int i = ARM_SEC_MAX; - while (--i >= 0) - unwind_table_del(mod->arch.map[i].unwind); -} -#else -static inline void register_unwind_tables(struct module *mod) { } -static inline void unregister_unwind_tables(struct module *mod) { } + for (i = 0; i < ARM_SEC_MAX; i++) + if (maps[i].unw_sec && maps[i].txt_sec) + mod->arch.unwind[i] = + unwind_table_add(maps[i].unw_sec->sh_addr, + maps[i].unw_sec->sh_size, + maps[i].txt_sec->sh_addr, + maps[i].txt_sec->sh_size); #endif - -int -module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, - struct module *module) -{ - register_unwind_tables(module); return 0; } void module_arch_cleanup(struct module *mod) { - unregister_unwind_tables(mod); +#ifdef CONFIG_ARM_UNWIND + int i; + + for (i = 0; i < ARM_SEC_MAX; i++) + if (mod->arch.unwind[i]) + unwind_table_del(mod->arch.unwind[i]); +#endif } |