rt-thread-official/components/libc/posix/libdl/arch/x86.c

51 lines
1.5 KiB
C

/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018/09/15 parai first version
*/
#include "../dlmodule.h"
#include "../dlelf.h"
#ifdef __i386__
#define R_X86_64_GLOB_DAT 6 /* Create GOT entry */
#define R_X86_64_JUMP_SLOT 7 /* Create PLT entry */
#define R_X86_64_RELATIVE 8 /* Adjust by program base */
int dlmodule_relocate(struct rt_dlmodule *module, Elf32_Rel *rel, Elf32_Addr sym_val)
{
Elf32_Addr *where, tmp;
Elf32_Sword addend, offset;
rt_uint32_t upper, lower, sign, j1, j2;
where = (Elf32_Addr *)((rt_uint8_t *)module->mem_space
+ rel->r_offset
- module->vstart_addr);
switch (ELF32_R_TYPE(rel->r_info))
{
case R_X86_64_GLOB_DAT:
case R_X86_64_JUMP_SLOT:
*where = (Elf32_Addr)sym_val;
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_JUMP_SLOT: 0x%x -> 0x%x 0x%x\n",
(uint32_t)where, *where, sym_val));
break;
case R_X86_64_RELATIVE:
*where = (Elf32_Addr)sym_val + *where;
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("R_X86_64_RELATIVE: 0x%x -> 0x%x 0x%x\n",
(uint32_t)where, *where, sym_val));
break;
default:
RT_DEBUG_LOG(RT_DEBUG_MODULE, ("X86ELF: invalid relocate TYPE %d\n", ELF32_R_TYPE(rel->r_info)));
return -1;
}
return 0;
}
#endif