zzy
aa8a1ff8ce
- 在 cbuild.toml 中启用 ir2mcode 和 sccf2target 依赖库 - 修改 justfile 中的构建命令，使用 release 模式并更新 tokei 统计排除 mcode 目录 - 重构 LIR 中的地址操作数类型，将 SCC_LIR_INSTR_KIND_ADDR 重命名为 SCC_LIR_INSTR_KIND_MEM - 实现完整的 MIR 到 x86_64 机器码转换，包括： - 添加 move、compare、binary operation 等指令发射函数 - 实现条件分支和跳转指令生成 - 支持算术、逻辑、移位等基本操作 - 添加调用和返回指令处理 - 实现栈分配和寄存器分配功能 - 完善 ir2mcode 模块，将 MIR 指令转换为机器码 - 更新 ir2sccf 模块，集成机器码生成功能 - 添加 mcode 库的架构支持和内存管理功能 - 修复 PE 文件生成中的空指针检查问题
120 lines
4.3 KiB
C
120 lines
4.3 KiB
C
#include <scc_ir2sccf.h>
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static inline void scc_ir_sym_to_sccf_sym(const scc_cfg_symbol_t *symbol,
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sccf_sym_t *sym) {
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switch (symbol->kind) {
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case SCC_CFG_SYMBOL_KIND_DATA:
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sym->sccf_sym_type = SCCF_SYM_TYPE_DATA;
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break;
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case SCC_CFG_SYMBOL_KIND_FUNC:
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sym->sccf_sym_type = SCCF_SYM_TYPE_FUNC;
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break;
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case SCC_CFG_SYMBOL_KIND_EXTERN:
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sym->sccf_sym_type = SCCF_SYM_TYPE_EXTERN;
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break;
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}
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switch (symbol->linkage) {
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case SCC_CFG_SYMBOL_LINK_GLOABL:
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sym->sccf_sym_bind = SCCF_SYM_BIND_GLOBAL;
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break;
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case SCC_CFG_SYMBOL_LINK_LOCAL:
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sym->sccf_sym_bind = SCCF_SYM_BIND_LOCAL;
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break;
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default:
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break;
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}
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}
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static inline void scc_ir_symbol_to_sect_data(const scc_cfg_symbol_t *symbol,
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sccf_sect_data_t *sect_data) {
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// scc_vec_foreach(value->data.const_array.fields, j) {
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// scc_vec_push(ctx->sect_data,
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// scc_vec_at(value->data.const_array.fields, j));
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// }
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}
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void scc_ir2sccf(sccf_builder_t *builder, scc_mir_module_t *mir_module) {
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// mir_module->symbol_metas
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// mir_module->cfg_module.funcs
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sccf_builder_init(builder);
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sccf_sect_data_t sect_data;
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scc_vec_init(sect_data);
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scc_vec_foreach(mir_module->cfg_module.symbols, i) {
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scc_cfg_symbol_t *symbol =
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&scc_vec_at(mir_module->cfg_module.symbols, i);
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if (symbol->name == nullptr) {
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LOG_ERROR("Symbol name is null");
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continue;
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}
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sccf_sym_t sym = (sccf_sym_t){
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.sccf_sect_offset = scc_vec_size(sect_data),
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.sccf_sym_size =
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4, // FIXME on windows using rel32, on linux using ?
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};
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scc_ir_sym_to_sccf_sym(symbol, &sym);
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scc_ir_symbol_to_sect_data(symbol, §_data);
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usize sym_idx = sccf_builder_add_symbol(builder, symbol->name, &sym);
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Assert(sym_idx != 0);
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}
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sccf_sect_data_t sect_code = {0};
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scc_vec_init(sect_code);
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scc_mcode_t mcode = {0};
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scc_mcode_init(&mcode, SCC_MCODE_ARCH_X86_64);
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scc_vec_foreach(mir_module->cfg_module.funcs, i) {
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if (i == 0)
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continue;
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scc_mir_func_t *func = &scc_vec_at(mir_module->cfg_module.funcs, i);
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sccf_sym_t *sym = sccf_builder_get_symbol_unsafe(builder, func->name);
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Assert(sym != nullptr);
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sym->sccf_sect_offset = scc_vec_size(mcode.mcode);
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scc_vec_foreach(func->bblocks, i) {
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scc_cfg_bblock_id_t id = scc_vec_at(func->bblocks, i);
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const scc_cfg_bblock_t *bb =
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scc_cfg_module_unsafe_get_bblock(&mir_module->cfg_module, id);
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scc_mir_instr_vec_t *instrs = SCC_MIR_BBLOCK_VALUES(bb);
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scc_vec_foreach(*instrs, i) {
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const scc_mir_instr_t *ins = &scc_vec_at(*instrs, i);
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// FIXME reloc symbol needed
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scc_ir2mcode_emit_instr(&mcode, ins);
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}
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}
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}
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scc_vec_unsafe_from_buffer(sect_code, scc_vec_unsafe_get_data(mcode.mcode),
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scc_vec_size(mcode.mcode));
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// u8 *buf = scc_vec_unsafe_get_data(ctx->sect_mcode.mcode);
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// scc_vec_foreach(ctx->builder->relocs, i) {
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// sccf_reloc_t *reloc = &scc_vec_at(ctx->builder->relocs, i);
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// if (reloc->sym_idx == 0) {
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// Panic("relocate to an invalid symbol");
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// }
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// sccf_sym_t *sym = &scc_vec_at(ctx->builder->symtab, reloc->sym_idx);
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// if (sym->sccf_sym_type != SCCF_SYM_TYPE_EXTERN) {
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// Assert(reloc->reloc_type == SCCF_RELOC_TYPE_REL);
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// if (sym->sccf_sect_type == SCCF_SECT_CODE &&
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// sym->sccf_sym_type == SCCF_SYM_TYPE_FUNC) {
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// i64 target_off = sym->sccf_sect_offset;
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// i64 next_off = reloc->offset + reloc->addend;
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// i32 rel = (i32)(target_off - next_off);
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// // FIXME 写入到指令的偏移字段（小端）
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// *(i32 *)(&buf[reloc->offset]) = rel;
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// reloc->reloc_type = SCCF_RELOC_TYPE_EMPTY;
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// }
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// }
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// }
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sccf_builder_add_text_section(builder, §_code);
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sccf_builder_add_data_section(builder, §_data);
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}
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