zzy
de6f5d510a
- 新增ir2mcode库用于将IR转换为机器码 - 添加sccf2target依赖以支持目标平台转换 - 在ast库中添加scc_pos依赖支持位置信息 - 更新cbuild.toml配置文件添加新库依赖 - 实现AMD64架构代码生成功能 - 添加寄存器分配器实现栈和寄存器位置管理 - 支持基本的算术运算和内存访问操作 - 添加PE格式目标文件生成支持
70 lines
3.2 KiB
C
70 lines
3.2 KiB
C
#include <sccf.h>
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#include <sccf2pe.h>
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#include <sccf_builder.h>
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#include <stdio.h>
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int main() {
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char data[] = "Hello, World from SCC PE Builder!\n\0";
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/* clang-format off */
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char code[] = {
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// sub rsp, 0x28 ; 为函数调用分配栈空间
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0x48, 0x83, 0xEC, 0x28,
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// lea rcx, [rip + data_offset] ; 将字符串地址加载到RCX（第一个参数）
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0x48, 0x8D, 0x0D, 0x00, 0x00, 0x00, 0x00,
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// call qword ptr [rip + puts_iat] ; 通过IAT调用puts
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0xFF, 0x15, 0x00, 0x00, 0x00, 0x00,
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// add rsp, 0x28 ; 恢复栈空间
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0x48, 0x83, 0xC4, 0x28,
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// xor eax, eax ; 设置返回值为0
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0x33, 0xC0,
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// ret ; 返回
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0xC3,
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};
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/* clang-format on */
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sccf_builder_t builder;
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sccf_builder_init(&builder);
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sccf_sect_data_t text_section = {
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.data = (u8 *)code, .size = sizeof(code), .cap = sizeof(code)};
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sccf_sect_data_t data_section = {
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.data = (u8 *)data, .size = sizeof(data), .cap = sizeof(data)};
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sccf_builder_add_text_section(&builder, &text_section);
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sccf_builder_add_data_section(&builder, &data_section);
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usize str_idx =
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sccf_builder_add_symbol(&builder, "str_data",
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&(sccf_sym_t){
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.sccf_sect_offset = 0,
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.sccf_sect_type = SCCF_SECT_DATA,
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.sccf_sym_bind = SCCF_SYM_BIND_GLOBAL,
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.sccf_sym_size = sizeof(data),
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.sccf_sym_type = SCCF_SYM_TYPE_DATA,
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.sccf_sym_vis = SCCF_SYM_VIS_DEFAULT,
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});
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usize puts_idx =
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sccf_builder_add_symbol(&builder, "puts",
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&(sccf_sym_t){
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.sccf_sect_offset = 0,
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.sccf_sect_type = SCCF_SECT_NONE,
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.sccf_sym_bind = SCCF_SYM_BIND_GLOBAL,
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.sccf_sym_size = 8,
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.sccf_sym_type = SCCF_SYM_TYPE_EXTERN,
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.sccf_sym_vis = SCCF_SYM_VIS_DEFAULT,
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});
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sccf_builder_add_reloc(&builder, (sccf_reloc_t){.addend = 4,
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.offset = 7,
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.sect_type = SCCF_SECT_CODE,
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.sym_idx = str_idx,
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.type = SCCF_RELOC_REL});
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sccf_builder_add_reloc(&builder, (sccf_reloc_t){.addend = 4,
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.offset = 13,
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.sect_type = SCCF_SECT_CODE,
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.sym_idx = puts_idx,
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.type = SCCF_RELOC_REL});
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const sccf_t *sccf = sccf_builder_to_sccf(&builder);
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scc_pe_builder_t pe_builder;
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sccf2pe(&pe_builder, sccf);
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scc_pe_dump_to_file(&pe_builder, __FILE__ "/../../test.exe");
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}
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