// SPDX-License-Identifier: GPL-2.0-or-later/*  Kernel module help for powerpc.    Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.    Copyright (C) 2008 Freescale Semiconductor, Inc. */#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 <linux/uaccess.h>#include <asm/firmware.h>#include <linux/sort.h>#include <asm/setup.h> static LIST_HEAD(module_bug_list); 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 rc; 	rc = module_finalize_ftrace(me, sechdrs);	if (rc)		return rc; 	/* 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 /* CONFIG_PPC64 */ #ifdef PPC64_ELF_ABI_v1	sect = find_section(hdr, sechdrs, ".opd");	if (sect != NULL) {		me->arch.start_opd = sect->sh_addr;		me->arch.end_opd = sect->sh_addr + sect->sh_size;	}#endif /* PPC64_ELF_ABI_v1 */ #ifdef CONFIG_PPC_BARRIER_NOSPEC	sect = find_section(hdr, sechdrs, "__spec_barrier_fixup");	if (sect != NULL)		do_barrier_nospec_fixups_range(barrier_nospec_enabled,				  (void *)sect->sh_addr,				  (void *)sect->sh_addr + sect->sh_size);#endif /* CONFIG_PPC_BARRIER_NOSPEC */ 	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;}