feat(ir2mcode): 添加IR到机器码转换模块并更新依赖配置

- 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

libs/target/sccf2target/src/sccf2pe.c

@@ -64,7 +64,7 @@ static void pe_idata_lib_init(pe_idata_lib_ctx_t *ctx) {
                        (scc_hashtable_hash_func_t)scc_strhash32,
                        (scc_hashtable_equal_func_t)scc_strcmp);
     scc_vec_init(ctx->idata_libs);
-    load_from_def(ctx, "./.dll_def", "ucrtbase.dll");
+    load_from_def(ctx, __FILE__ "/../../.dll_def", "ucrtbase.dll");
 }
 
 static cbool pe_idata_get(pe_idata_lib_ctx_t *ctx, const char *name) {
@@ -102,24 +102,22 @@ void sccf2pe(scc_pe_builder_t *builder, const sccf_t *sccf) {
     sccf_sym_vec_t symtab;
     scc_vec_init(symtab);
 
-    sccf_sect_data_t *text_data = null;
-
-    scc_pe_reserve_header(builder, 3);
-
-    scc_pe_section_range code_range = {0};
-    scc_pe_section_range data_range = {0};
-    scc_pe_section_range idata_range = {0};
-
+    sccf_sect_data_t *code_data = null;
+    sccf_sect_data_t *data_data = null;
+    int num_of_section = 1;
     scc_vec_foreach(sccf->sect_headers, i) {
         sccf_sect_header_t *sect_header = &scc_vec_at(sccf->sect_headers, i);
         sccf_sect_data_t *sect_data = &scc_vec_at(sccf->sect_datas, i);
         if (sect_header->sccf_sect_type == SCCF_SECT_CODE) {
-            text_data = sect_data;
-            code_range = scc_pe_reserve_text_section_header(
-                builder, scc_vec_size(*sect_data));
+            if (scc_vec_size(*sect_data) != 0) {
+                code_data = sect_data;
+                num_of_section += 1;
+            }
         } else if (sect_header->sccf_sect_type == SCCF_SECT_DATA) {
-            data_range = scc_pe_reserve_data_section_header(
-                builder, scc_vec_size(*sect_data));
+            if (scc_vec_size(*sect_data) != 0) {
+                data_data = sect_data;
+                num_of_section += 1;
+            }
         } else if (sect_header->sccf_sect_type == SCCF_SECT_STRTAB) {
             scc_vec_unsafe_from_buffer(
                 strtab, (char *)scc_vec_unsafe_get_data(*sect_data),
@@ -135,6 +133,21 @@ void sccf2pe(scc_pe_builder_t *builder, const sccf_t *sccf) {
         }
     }
 
+    scc_pe_reserve_header(builder, num_of_section);
+
+    scc_pe_section_range code_range = {0};
+    scc_pe_section_range data_range = {0};
+    scc_pe_section_range idata_range = {0};
+
+    if (code_data) {
+        code_range = scc_pe_reserve_text_section_header(
+            builder, scc_vec_size(*code_data));
+    }
+    if (data_data) {
+        data_range = scc_pe_reserve_data_section_header(
+            builder, scc_vec_size(*data_data));
+    }
+
     pe_idata_lib_ctx_t idata_lib_ctx;
     pe_idata_lib_init(&idata_lib_ctx);
     scc_vec_foreach(symtab, i) {
@@ -204,24 +217,21 @@ void sccf2pe(scc_pe_builder_t *builder, const sccf_t *sccf) {
         }
         Assert(reloc->sect_type == SCCF_SECT_CODE);
         rva -= code_range.virual_address + reloc->offset + reloc->addend;
-        Assert(text_data != null);
+        Assert(code_data != null);
         // FIXME 需要确保宿主机与目标机器大小端一致
-        *(u32 *)(scc_vec_unsafe_get_data(*text_data) + reloc->offset) = rva;
+        *(u32 *)(scc_vec_unsafe_get_data(*code_data) + reloc->offset) = rva;
     }
 
     scc_pe_write_header(builder, &config);
-    scc_vec_foreach(sccf->sect_headers, i) {
-        sccf_sect_header_t *sect_header = &scc_vec_at(sccf->sect_headers, i);
-        sccf_sect_data_t *sect_data = &scc_vec_at(sccf->sect_datas, i);
-        if (sect_header->sccf_sect_type == SCCF_SECT_CODE) {
-            scc_pe_write_section(builder, &code_range,
-                                 (u8 *)scc_vec_unsafe_get_data(*sect_data),
-                                 scc_vec_size(*sect_data));
-        } else if (sect_header->sccf_sect_type == SCCF_SECT_DATA) {
-            scc_pe_write_section(builder, &data_range,
-                                 (u8 *)scc_vec_unsafe_get_data(*sect_data),
-                                 scc_vec_size(*sect_data));
-        }
+    if (code_data != null) {
+        scc_pe_write_section(builder, &code_range,
+                             (u8 *)scc_vec_unsafe_get_data(*code_data),
+                             scc_vec_size(*code_data));
+    }
+    if (data_data != null) {
+        scc_pe_write_section(builder, &data_range,
+                             (u8 *)scc_vec_unsafe_get_data(*data_data),
+                             scc_vec_size(*data_data));
     }
     scc_pe_write_section(builder, &idata_range,
                          scc_vec_unsafe_get_data(idata_buffer),