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dae73c4cdc
We need to know about x86 relocation definitions even in cases where we don't officially build against the x86 target, such as with sandbox. So let's move the x86 definitions into the common elf header, where all other architectures already have them. Signed-off-by: Alexander Graf <agraf@suse.de>
63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
// SPDX-License-Identifier: BSD-3-Clause
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/*
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* reloc_x86_64.c - position independent x86_64 ELF shared object relocator
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* Copyright (C) 1999 Hewlett-Packard Co.
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* Contributed by David Mosberger <davidm@hpl.hp.com>.
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* Copyright (C) 2005 Intel Co.
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* Contributed by Fenghua Yu <fenghua.yu@intel.com>.
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*
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* All rights reserved.
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*/
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#include <common.h>
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#include <efi.h>
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#include <elf.h>
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efi_status_t EFIAPI _relocate(long ldbase, Elf64_Dyn *dyn)
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{
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long relsz = 0, relent = 0;
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Elf64_Rel *rel = 0;
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unsigned long *addr;
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int i;
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for (i = 0; dyn[i].d_tag != DT_NULL; ++i) {
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switch (dyn[i].d_tag) {
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case DT_RELA:
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rel = (Elf64_Rel *)
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((unsigned long)dyn[i].d_un.d_ptr + ldbase);
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break;
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case DT_RELASZ:
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relsz = dyn[i].d_un.d_val;
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break;
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case DT_RELAENT:
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relent = dyn[i].d_un.d_val;
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break;
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default:
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break;
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}
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}
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if (!rel && relent == 0)
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return EFI_SUCCESS;
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if (!rel || relent == 0)
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return EFI_LOAD_ERROR;
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while (relsz > 0) {
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/* apply the relocs */
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switch (ELF64_R_TYPE(rel->r_info)) {
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case R_X86_64_NONE:
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break;
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case R_X86_64_RELATIVE:
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addr = (unsigned long *)(ldbase + rel->r_offset);
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*addr += ldbase;
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break;
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default:
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break;
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}
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rel = (Elf64_Rel *)((char *)rel + relent);
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relsz -= relent;
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}
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return EFI_SUCCESS;
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}
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