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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788// 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/mm.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>#include <asm/sections.h>
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 CONFIG_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 /* CONFIG_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;}