diff options
| author | parai.wang <[email protected]> | 2018-09-15 13:32:42 +0800 |
|---|---|---|
| committer | parai.wang <[email protected]> | 2018-09-15 13:32:42 +0800 |
| commit | 133a42fbb7da53585021203ad546e29729f9c81d (patch) | |
| tree | dd611c90222a645215b6bd8ba32ce42e6881a17b /components/libc | |
| parent | 0aa4b72b45bab31699c00c44871c0ee39e9cf4b3 (diff) | |
bring up dlmoudle on x86
Diffstat (limited to 'components/libc')
| -rw-r--r-- | components/libc/libdl/arch/x86.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/components/libc/libdl/arch/x86.c b/components/libc/libdl/arch/x86.c new file mode 100644 index 0000000000..4f70b1d22e --- /dev/null +++ b/components/libc/libdl/arch/x86.c @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2006-2018, 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 __x86__ + +#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 |