1 /* 2 * Copyright (c) 2006-2018, RT-Thread Development Team 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Change Logs: 7 * Date Author Notes 8 * 2018/09/15 parai first version 9 */ 10 11 #include "../dlmodule.h" 12 #include "../dlelf.h" 13 14 #ifdef __i386__ 15 16 #define R_X86_64_GLOB_DAT 6 /* Create GOT entry */ 17 #define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */ 18 #define R_X86_64_RELATIVE 8 /* Adjust by program base */ 19 int dlmodule_relocate(struct rt_dlmodule *module, Elf32_Rel *rel, Elf32_Addr sym_val) 20 { 21 Elf32_Addr *where, tmp; 22 Elf32_Sword addend, offset; 23 rt_uint32_t upper, lower, sign, j1, j2; 24 25 where = (Elf32_Addr *)((rt_uint8_t *)module->mem_space 26 + rel->r_offset 27 - module->vstart_addr); 28 29 switch (ELF32_R_TYPE(rel->r_info)) 30 { 31 case R_X86_64_GLOB_DAT: 32 case R_X86_64_JUMP_SLOT: 33 *where = (Elf32_Addr)sym_val; 34 35 RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_JUMP_SLOT: 0x%x -> 0x%x 0x%x\n", 36 (uint32_t)where, *where, sym_val)); 37 break; 38 case R_X86_64_RELATIVE: 39 *where = (Elf32_Addr)sym_val + *where; 40 RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_RELATIVE: 0x%x -> 0x%x 0x%x\n", 41 (uint32_t)where, *where, sym_val)); 42 break; 43 default: 44 RT_DEBUG_LOG(RT_DEBUG_MODULE, ("X86ELF: invalid relocate TYPE %d\n", ELF32_R_TYPE(rel->r_info))); 45 return -1; 46 } 47 48 return 0; 49 } 50 #endif 51