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https://github.com/brain-hackers/u-boot-brain
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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>
70 lines
1.2 KiB
C
70 lines
1.2 KiB
C
// SPDX-License-Identifier: BSD-3-Clause
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/*
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* reloc_ia32.c - position independent x86 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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*
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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, Elf32_Dyn *dyn)
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{
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long relsz = 0, relent = 0;
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Elf32_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_REL:
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rel = (Elf32_Rel *)((unsigned long)dyn[i].d_un.d_ptr +
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ldbase);
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break;
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case DT_RELSZ:
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relsz = dyn[i].d_un.d_val;
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break;
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case DT_RELENT:
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relent = dyn[i].d_un.d_val;
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break;
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case DT_RELA:
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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 (ELF32_R_TYPE(rel->r_info)) {
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case R_386_NONE:
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break;
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case R_386_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 = (Elf32_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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