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/* Kernel module help for powerpc. Copyright (C) 2001, 2003 Rusty Russell IBM Corporation. Copyright (C) 2008 Freescale Semiconductor, Inc. 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 */ #include <linux/module.h> #include <linux/elf.h> #include <linux/moduleloader.h> #include <linux/err.h> #include <linux/vmalloc.h> #include <linux/bug.h> #include <asm/module.h> #include <asm/uaccess.h> #include <asm/firmware.h> #include <linux/sort.h> #include "setup.h" LIST_HEAD(module_bug_list); void *module_alloc(unsigned long size) { if (size == 0) return NULL; return vmalloc_exec(size); } /* Free memory returned from module_alloc */ void module_free(struct module *mod, void *module_region) { vfree(module_region); } static const Elf_Shdr *find_section(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, const char *name) { char *secstrings; unsigned int i; secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset; for (i = 1; i < hdr->e_shnum; i++) if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0) return &sechdrs[i]; return NULL; } int module_finalize(const Elf_Ehdr *hdr, const Elf_Shdr *sechdrs, struct module *me) { const Elf_Shdr *sect; int err; /* Apply feature fixups */ sect = find_section(hdr, sechdrs, "__ftr_fixup"); if (sect != NULL) do_feature_fixups(cur_cpu_spec->cpu_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup"); if (sect != NULL) do_feature_fixups(cur_cpu_spec->mmu_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); #ifdef CONFIG_PPC64 sect = find_section(hdr, sechdrs, "__fw_ftr_fixup"); if (sect != NULL) do_feature_fixups(powerpc_firmware_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); #endif sect = find_section(hdr, sechdrs, "__lwsync_fixup"); if (sect != NULL) do_lwsync_fixups(cur_cpu_spec->cpu_features, (void *)sect->sh_addr, (void *)sect->sh_addr + sect->sh_size); return 0; } void module_arch_cleanup(struct module *mod) { }
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