51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
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/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018/09/15 parai first version
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*/
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#include "../dlmodule.h"
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#include "../dlelf.h"
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#ifdef __x86__
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#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
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#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
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#define R_X86_64_RELATIVE 8 /* Adjust by program base */
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int dlmodule_relocate(struct rt_dlmodule *module, Elf32_Rel *rel, Elf32_Addr sym_val)
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{
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Elf32_Addr *where, tmp;
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Elf32_Sword addend, offset;
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rt_uint32_t upper, lower, sign, j1, j2;
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where = (Elf32_Addr *)((rt_uint8_t *)module->mem_space
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+ rel->r_offset
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- module->vstart_addr);
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switch (ELF32_R_TYPE(rel->r_info))
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{
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case R_X86_64_GLOB_DAT:
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case R_X86_64_JUMP_SLOT:
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*where = (Elf32_Addr)sym_val;
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RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_JUMP_SLOT: 0x%x -> 0x%x 0x%x\n",
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(uint32_t)where, *where, sym_val));
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break;
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case R_X86_64_RELATIVE:
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*where = (Elf32_Addr)sym_val + *where;
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RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_RELATIVE: 0x%x -> 0x%x 0x%x\n",
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(uint32_t)where, *where, sym_val));
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break;
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default:
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RT_DEBUG_LOG(RT_DEBUG_MODULE, ("X86ELF: invalid relocate TYPE %d\n", ELF32_R_TYPE(rel->r_info)));
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return -1;
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}
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return 0;
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}
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#endif
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