2018-08-13 09:58:24 +01:00
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/*
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* Copyright © 2014, Owen Shepherd
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2018-08-07 15:53:58 +01:00
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "elfload.h"
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#if defined(__aarch64__)
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#define R_AARCH64_NONE 0
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#define R_AARCH64_RELATIVE 1027
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el_status el_applyrela(el_ctx *ctx, Elf_RelA *rel)
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{
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uintptr_t *p = (uintptr_t *)(rel->r_offset + ctx->base_load_paddr);
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uint32_t type = ELF_R_TYPE(rel->r_info);
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uint32_t sym = ELF_R_SYM(rel->r_info);
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switch (type)
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{
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case R_AARCH64_NONE:
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EL_DEBUG("R_AARCH64_NONE\n");
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break;
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case R_AARCH64_RELATIVE:
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if (sym)
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{
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EL_DEBUG("R_AARCH64_RELATIVE with symbol ref!\n");
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return EL_BADREL;
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}
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EL_DEBUG("Applying R_AARCH64_RELATIVE reloc @%p\n", p);
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*p = rel->r_addend + ctx->base_load_vaddr;
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break;
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default:
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EL_DEBUG("Bad relocation %u\n", type);
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return EL_BADREL;
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}
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return EL_OK;
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}
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el_status el_applyrel(el_ctx *ctx, Elf_Rel *rel)
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{
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uintptr_t *p = (uintptr_t *)(rel->r_offset + ctx->base_load_paddr);
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uint32_t type = ELF_R_TYPE(rel->r_info);
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uint32_t sym = ELF_R_SYM(rel->r_info);
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switch (type)
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{
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case R_AARCH64_NONE:
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EL_DEBUG("R_AARCH64_NONE\n");
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break;
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case R_AARCH64_RELATIVE:
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if (sym)
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{
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EL_DEBUG("R_AARCH64_RELATIVE with symbol ref!\n");
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return EL_BADREL;
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}
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EL_DEBUG("Applying R_AARCH64_RELATIVE reloc @%p\n", p);
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*p += ctx->base_load_vaddr;
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break;
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default:
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EL_DEBUG("Bad relocation %u\n", type);
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return EL_BADREL;
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}
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return EL_OK;
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}
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#endif
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