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| author | Tom Rini <trini@konsulko.com> | 2015-08-05 14:12:37 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-08-05 14:12:37 -0400 |
| commit | 1a2728ae4faf12874173de156b8a7e66cfbbeae5 (patch) | |
| tree | 9aba8e6c915b341df8ec6077d8ecb28f1eb32b0b /arch/x86/lib/efi/reloc_x86_64.c | |
| parent | dcc7dbc73169bb4e39f27c1d95bbf031ccfc1744 (diff) | |
| parent | 12c7510f17ff29190e52336910e43a50c0d620a6 (diff) | |
| download | u-boot-imx-1a2728ae4faf12874173de156b8a7e66cfbbeae5.zip u-boot-imx-1a2728ae4faf12874173de156b8a7e66cfbbeae5.tar.gz u-boot-imx-1a2728ae4faf12874173de156b8a7e66cfbbeae5.tar.bz2 | |
Merge git://git.denx.de/u-boot-x86
Diffstat (limited to 'arch/x86/lib/efi/reloc_x86_64.c')
| -rw-r--r-- | arch/x86/lib/efi/reloc_x86_64.c | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/arch/x86/lib/efi/reloc_x86_64.c b/arch/x86/lib/efi/reloc_x86_64.c new file mode 100644 index 0000000..5f71f2a --- /dev/null +++ b/arch/x86/lib/efi/reloc_x86_64.c @@ -0,0 +1,66 @@ +/* + * reloc_x86_64.c - position independent x86_64 ELF shared object relocator + * Copyright (C) 1999 Hewlett-Packard Co. + * Contributed by David Mosberger <davidm@hpl.hp.com>. + * Copyright (C) 2005 Intel Co. + * Contributed by Fenghua Yu <fenghua.yu@intel.com>. + * + * All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <common.h> +#include <efi.h> +#include <elf.h> +#include <asm/elf.h> + +efi_status_t _relocate(long ldbase, Elf64_Dyn *dyn, efi_handle_t image, + struct efi_system_table *systab) +{ + long relsz = 0, relent = 0; + Elf64_Rel *rel = 0; + unsigned long *addr; + int i; + + for (i = 0; dyn[i].d_tag != DT_NULL; ++i) { + switch (dyn[i].d_tag) { + case DT_RELA: + rel = (Elf64_Rel *) + ((unsigned long)dyn[i].d_un.d_ptr + ldbase); + break; + case DT_RELASZ: + relsz = dyn[i].d_un.d_val; + break; + case DT_RELAENT: + relent = dyn[i].d_un.d_val; + break; + default: + break; + } + } + + if (!rel && relent == 0) + return EFI_SUCCESS; + + if (!rel || relent == 0) + return EFI_LOAD_ERROR; + + while (relsz > 0) { + /* apply the relocs */ + switch (ELF64_R_TYPE(rel->r_info)) { + case R_X86_64_NONE: + break; + case R_X86_64_RELATIVE: + addr = (unsigned long *)(ldbase + rel->r_offset); + *addr += ldbase; + break; + default: + break; + } + rel = (Elf64_Rel *)((char *)rel + relent); + relsz -= relent; + } + + return EFI_SUCCESS; +} |