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| 3 | Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.
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| 4 | Copyright (C) 2008 Freescale Semiconductor, Inc.
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| 5 |
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| 6 |
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| 7 | #include <linux/elf.h>
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| 8 | #include <linux/moduleloader.h>
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| 9 | #include <linux/err.h>
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| 10 | #include <linux/mm.h>
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| 11 | #include <linux/bug.h>
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| 12 | #include <asm/module.h>
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| 13 | #include <linux/uaccess.h>
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| 14 | #include <asm/firmware.h>
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| 15 | #include <linux/sort.h>
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| 16 | #include <asm/setup.h>
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| 17 | #include <asm/sections.h>
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| 18 |
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| 19 | static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
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| 20 | const Elf_Shdr *sechdrs,
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| 21 | const char *name)
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| 22 | {
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| 23 | char *secstrings;
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| 24 | unsigned int i;
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| 25 |
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| 26 | secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
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| 27 | for (i = 1; i < hdr->e_shnum; i++)
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| 28 | if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0)
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| 29 | return &sechdrs[i];
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| 30 | return NULL;
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| 31 | }
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| 32 |
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| 33 | int module_finalize(const Elf_Ehdr *hdr,
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| 34 | const Elf_Shdr *sechdrs, struct module *me)
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| 35 | {
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| 36 | const Elf_Shdr *sect;
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| 37 | int rc;
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| 38 |
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| 39 | rc = module_finalize_ftrace(me, sechdrs);
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| 40 | if (rc)
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| 41 | return rc;
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| 42 |
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| 43 |
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| 44 | sect = find_section(hdr, sechdrs, "__ftr_fixup");
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| 45 | if (sect != NULL)
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| 46 | do_feature_fixups(cur_cpu_spec->cpu_features,
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| 47 | (void *)sect->sh_addr,
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| 48 | (void *)sect->sh_addr + sect->sh_size);
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| 49 |
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| 50 | sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup");
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| 51 | if (sect != NULL)
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| 52 | do_feature_fixups(cur_cpu_spec->mmu_features,
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| 53 | (void *)sect->sh_addr,
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| 54 | (void *)sect->sh_addr + sect->sh_size);
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| 55 |
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| 56 | #ifdef CONFIG_PPC64
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| 57 | sect = find_section(hdr, sechdrs, "__fw_ftr_fixup");
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| 58 | if (sect != NULL)
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| 59 | do_feature_fixups(powerpc_firmware_features,
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| 60 | (void *)sect->sh_addr,
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| 61 | (void *)sect->sh_addr + sect->sh_size);
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| 62 | #endif
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| 63 |
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| 64 | #ifdef CONFIG_PPC64_ELF_ABI_V1
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| 65 | sect = find_section(hdr, sechdrs, ".opd");
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| 66 | if (sect != NULL) {
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| 67 | me->arch.start_opd = sect->sh_addr;
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| 68 | me->arch.end_opd = sect->sh_addr + sect->sh_size;
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| 69 | }
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| 70 | #endif
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| 71 |
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| 72 | #ifdef CONFIG_PPC_BARRIER_NOSPEC
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| 73 | sect = find_section(hdr, sechdrs, "__spec_barrier_fixup");
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| 74 | if (sect != NULL)
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| 75 | do_barrier_nospec_fixups_range(barrier_nospec_enabled,
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| 76 | (void *)sect->sh_addr,
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| 77 | (void *)sect->sh_addr + sect->sh_size);
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| 78 | #endif
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| 79 |
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| 80 | sect = find_section(hdr, sechdrs, "__lwsync_fixup");
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| 81 | if (sect != NULL)
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| 82 | do_lwsync_fixups(cur_cpu_spec->cpu_features,
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| 83 | (void *)sect->sh_addr,
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| 84 | (void *)sect->sh_addr + sect->sh_size);
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| 85 |
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| 86 | return 0;
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| 87 | }
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