12.8 切片 6:FUNCTION 与 CALL,冻结调用约定。
- 调用约定(冻结进 isa 规格与 12.8 文档):结果 r0、参数 r1..r7(最多 7 输入、函数内只读)、 变量与临时全部从 r8 起;CALL/RET 时 VM 复制 r0..r7(12.9 实现) - 调用点:实参求值到 r8+ 临时 → MOVE r(1+i) → CALL fn_id → MOVE rd, r0 - 函数名赋值 = 写 r0(结果);写函数输入 → codegen error - codegen_test:134 断言(用例 13 两函数 CALL 序列;既有用例帧基址迁移 r8 起),ctest 9/9
This commit is contained in:
@@ -30,6 +30,20 @@ compiler 模块的代码生成。输入:`Project` + `Unit`(AST)+ `LinkResu
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- 字段访问 `fb.Q`:`LOAD_GLOBAL rd, <实例基址+字段偏移>`(编译期算死);I/Q/M 用 `LOAD_I` / `STORE_Q` / `LOAD_M` / `STORE_M` 同槽号
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- 函数帧寄存器:`FUNCTION` 结果固定 **r0**,`VAR_INPUT` 从 r1 起按声明序,`VAR` 续后;PROGRAM / FB 变量从 r0 起按声明序
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### 调用约定(v1 冻结,VM 12.9 按此实现)
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| 项 | 约定 |
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|---|---|
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| 结果寄存器 | **r0**(FUNCTION 结果写入处) |
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| 参数寄存器 | **r1..r7**(最多 7 个输入,按声明序) |
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| 变量 / 临时 | **全部从 r8 起**(调用约定区不受覆盖) |
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| `CALL` | VM 复制当前帧 **r0..r7 → 新帧 r0..r7** |
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| `RET` | VM 复制当前帧 **r0..r7 → 调用方帧 r0..r7**(r0=结果,r1..r7 原样返回) |
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| 函数输入 | 函数体内**只读**(写输入 → codegen error) |
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- 调用点:实参求值到 r8+ 临时 → `MOVE r(1+i), t` → `CALL fn_id` → `MOVE rd, r0`
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- 所有 POU 的变量/临时统一 r8 起,故 r1..r7 在调用点可安全覆盖
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## 寄存器分配
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- 局部变量固定占用前段(0..k-1)
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@@ -47,6 +47,14 @@ CMake 目标:`isa`(`STATIC`),无依赖。公开头:`isa/include/isa/`
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| 寄存器 | 下标 0..255;每函数实际个数写在函数头 `nregs` |
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| 跳转 | 相对 offset,单位是**指令条数**,不是字节 |
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| `CALL` | 立即数 `fn_id`(u16),无函数指针 |
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### 调用约定(冻结,compiler 12.8 与 VM 12.9 共同遵守)
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- 结果寄存器 **r0**;参数寄存器 **r1..r7**(最多 7 个输入,按声明序)
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- 变量与表达式临时**全部从 r8 起**(调用约定区 r0..r7 不受用户数据占用)
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- `CALL`:VM 复制当前帧 r0..r7 到新帧 r0..r7
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- `RET`:VM 复制当前帧 r0..r7 回调用方帧 r0..r7(r0 = 结果;r1..r7 原样返回)
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- 函数输入在函数体内只读(compiler 拒绝写入)
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| 映像魔数 | `STSC`,版本 `1` |
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| 工程哈希 | 源文件路径排序后对内容做 FNV-1a 64(非密码学) |
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| I/O 绑定 | **不进映像**;编译期把 `var` 收成槽号,channel/bit 由 STCompiler 写进 sidecar(`.runtime.toml`),BytecodeExecutor 读 sidecar 采样 |
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+86
-18
@@ -1,15 +1,15 @@
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/**
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* @file Codegen.cpp
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* @brief 寄存器码生成(12.8,切片 5:+ WHILE、四则运算)
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* @brief 寄存器码生成(12.8,切片 6:+ FUNCTION 与 CALL)
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* @author
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* @date 2026-08-21
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*
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* @details 设计说明(详见 Doc/compiler/寄存器码.md):
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* - 切片 1~4:帧/字面量/MOVE/RET;全局数据区;NOT 与短路 AND/OR;CMP 与 IF。
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* - 切片 5:WHILE 编成
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* L_loop: <cond→t> JF t, L_end <body> JMP L_loop L_end:
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* (用例 5 循环体含自增,四则 ADD/SUB/MUL/DIV 同模式一并实现,用例 7 可测)
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* - 跳转偏移相对下一条指令(目标 = 当前 + 1 + off,见 Doc/isa/指令与映像.md)
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* - 切片 1~5:帧/字面量/MOVE/RET;全局数据区;NOT 与短路 AND/OR;CMP 与 IF;WHILE 与四则。
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* - 切片 6:调用约定(冻结)——结果 r0、参数 r1..r7(最多 7 输入、函数内只读)、
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* 变量与临时全部从 r8 起(调用约定区不受覆盖);
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* CALL 时 VM 复制 r0..r7 到新帧、RET 复制回调用方(r0=结果);
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* 调用点:实参求值到 r8+ 临时 → MOVE r(1+i) → CALL fn_id → MOVE rd, r0
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* - 其余构造报 codegen error(后续切片展开)
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*
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* 函数清单:
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@@ -19,13 +19,14 @@
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* - Builder::run 布局数据区 → 逐 POU 建函数 → 拼映像
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* - Builder::fail 组装 "codegen error: <msg>" 返回 false
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* - find_pou 按名查 POU AST
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* - build_function 编译一个 POU 的语句体(帧寄存器分配)
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* - find_fn_id 按名查 fn_id(POU 收集序)
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* - build_function 编译一个 POU(PROGRAM/FUNCTION;帧约定分配)
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* - begin_stmt / alloc_temp 临时寄存器:语句内递增、语句结束复用基址
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* - compile_stmt 语句编译(切片 5:赋值 / IF / WHILE)
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* - compile_stmt 语句编译(赋值 / IF / WHILE;函数输入只读)
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* - compile_if IF/ELSIF/ELSE:条件链 + 分支尾部 JMP,JF/JMP 回填
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* - compile_while WHILE:L_loop + 条件 JF + 体 + JMP 回环
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* - store_target 赋值左值:STORE_* 到全局槽
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* - compile_expr 表达式编译到寄存器(含 CMP/算术/NOT/短路 AND/OR)
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* - compile_expr 表达式编译到寄存器(含 CMP/算术/NOT/短路/CALL)
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* - cmp_op / arith_op 比较符/算术符 → 操作码
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* - load_op / store_op 按 io 绑定选读取/写入操作码
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* - global_offset 逻辑槽号 → 数据区字节偏移
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@@ -176,9 +177,11 @@ namespace {
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std::string name;
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std::vector<isa::Instr> code; // 字节码(函数表 code_offset 相对此段)
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std::map<std::string, uint8_t> regs; // 变量名 → 帧寄存器
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uint8_t nlocals = 0; // 变量数 = 临时寄存器起始
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uint8_t nlocals = 0; // 变量区终点 = 临时寄存器起始
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uint8_t nregs = 0; // 峰值(变量 + 临时)
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uint8_t temp_used = 0; // 本语句已用临时数(语句结束清零)
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bool is_function = false; // FUNCTION(结果 r0 / 输入只读)
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std::string result_name; // FUNCTION 名(结果寄存器映射)
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};
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/**
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@@ -203,31 +206,53 @@ namespace {
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/**
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* @brief 编译一个 POU
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* @details 切片 1:仅 PROGRAM + 标量变量(FB 实例/函数留后续切片)
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* @details 切片 6:支持 PROGRAM 与 FUNCTION(FB 留切片 8)
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* 帧约定(见 Doc/compiler/寄存器码.md):结果 r0、输入 r1..r7(只读)、
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* 变量与临时全部从 r8 起
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* @param pou POU AST
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* @param f 输出函数编译态
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* @return true 成功;false(err 已写)
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*/
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bool build_function(const POU& pou, FuncCtx* f) {
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if (pou.kind != PouKind::Program) {
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return fail("only PROGRAM supported in slice 1 ('" + pou.name + "')");
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if (pou.kind == PouKind::FunctionBlock) {
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return fail("FB not supported in slice 6 ('" + pou.name + "')");
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}
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f->is_function = pou.kind == PouKind::Function;
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f->result_name = pou.name;
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if (f->is_function) {
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f->regs[pou.name] = 0; // 结果寄存器 r0
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uint8_t idx = 1;
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for (const VarBlock& b : pou.blocks) {
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if (b.section != VarSection::Input) {
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continue;
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}
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for (const VarDecl& d : b.vars) {
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f->regs[d.name] = idx++; // 输入 r1..r7
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}
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}
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}
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uint8_t r = 8; // 变量/临时基址(调用约定区 r0..r7 不占用)
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for (const VarBlock& b : pou.blocks) {
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// External / Global 走数据区槽,不占帧寄存器
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if (b.section == VarSection::External || b.section == VarSection::Global) {
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continue;
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}
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// FUNCTION 输入已分配(r1..r7)
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if (f->is_function && b.section == VarSection::Input) {
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continue;
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}
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for (const VarDecl& d : b.vars) {
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if (d.type.kind == TypeKind::FbUser || d.type.kind == TypeKind::FbBuiltin) {
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return fail("FB instance not supported in slice 1 ('" + d.name + "')");
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return fail("FB instance not supported in slice 6 ('" + d.name + "')");
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}
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if (f->regs.size() > 255) {
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if (r > 255) {
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return fail("register overflow in function '" + pou.name + "'");
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}
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f->regs[d.name] = f->nregs++;
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f->regs[d.name] = r++;
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}
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}
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f->nlocals = f->nregs;
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f->nlocals = r;
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f->nregs = r;
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for (const Stmt& st : pou.body) {
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begin_stmt(*f);
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if (!compile_stmt(*f, st)) {
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@@ -259,6 +284,10 @@ namespace {
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// 全局 / 外部左值 → STORE_* 到数据区
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return store_target(f, st.target, *st.value);
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}
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// 函数输入只读(调用约定,见 Doc/compiler/寄存器码.md)
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if (f.is_function && it->second >= 1 && it->second <= 7) {
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return fail("cannot write function input '" + st.target + "'");
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}
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const uint8_t rd = it->second;
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return compile_expr(f, *st.value, rd);
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}
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@@ -452,7 +481,46 @@ namespace {
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patch_jump(f, jmp_idx, f.code.size());
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return true;
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}
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return fail("expression not supported in slice 3");
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if (e.kind == ExprKind::Call) {
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// 调用约定:实参求值到 r8+ 临时 → MOVE 到 r1..r7 → CALL → 结果 r0
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if (e.args.size() > 7) {
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return fail("too many arguments (max 7)");
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}
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std::vector<uint8_t> args;
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for (const auto& a : e.args) {
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const uint8_t t = alloc_temp(f);
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if (!compile_expr(f, *a, t)) {
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return false;
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}
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args.push_back(t);
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}
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const int fn_id = find_fn_id(e.name);
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if (fn_id < 0) {
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return fail("no fn_id for '" + e.name + "'");
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}
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for (size_t i = 0; i < args.size(); ++i) {
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f.code.push_back(
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isa::enc_rr(isa::Op::MOVE, static_cast<uint8_t>(1 + i), args[i]));
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}
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f.code.push_back(isa::enc_call(static_cast<uint16_t>(fn_id)));
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f.code.push_back(isa::enc_rr(isa::Op::MOVE, rd, 0));
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return true;
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}
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return fail("expression not supported in slice 6");
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}
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/**
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* @brief 按名查 fn_id(POU 收集序下标)
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* @param name POU 名(小写)
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* @return fn_id;未找到返回 -1
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*/
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int find_fn_id(const std::string& name) const {
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for (size_t i = 0; i < link_.scopes.size(); ++i) {
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if (link_.scopes[i].name == name) {
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return static_cast<int>(i);
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}
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}
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return -1;
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}
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/**
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+105
-54
@@ -121,7 +121,7 @@ static bool test_case01() {
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CHECK(v.header().project_hash != isa::kFnvBasis);
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const isa::FuncRow r = v.func_row(0);
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CHECK(r.nregs == 0);
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CHECK(r.nregs == 8); // 帧基址(调用约定区)
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CHECK(r.code_len == 1);
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char buf[32];
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@@ -143,16 +143,16 @@ static bool test_case02() {
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CHECK(v.header().n_consts == 2); // TRUE 与 FALSE
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const isa::FuncRow r = v.func_row(0);
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CHECK(r.nregs == 2); // a, b
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CHECK(r.nregs == 10); // a, b(r8 起)
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CHECK(r.code_len == 3);
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// 从字节码段取指令(按函数行 code_offset 定位)
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const uint8_t* base = v.code_bytes();
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char buf[64];
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[0], buf, sizeof buf);
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CHECK(std::strcmp(buf, "LOADK r0, 0") == 0); // a := TRUE(常量 0)
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CHECK(std::strcmp(buf, "LOADK r8, 0") == 0); // a := TRUE(常量 0)
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[1], buf, sizeof buf);
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CHECK(std::strcmp(buf, "LOADK r1, 1") == 0); // b := FALSE(常量 1)
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CHECK(std::strcmp(buf, "LOADK r9, 1") == 0); // b := FALSE(常量 1)
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[2], buf, sizeof buf);
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CHECK(std::strcmp(buf, "RET") == 0);
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@@ -179,13 +179,13 @@ static bool test_case09() {
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CHECK(v.data_bytes()[1] == 0);
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const isa::FuncRow r = v.func_row(0);
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CHECK(r.nregs == 1); // 仅局部 x
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CHECK(r.nregs == 9); // r8 起:仅局部 x
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CHECK(r.code_len == 2);
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char buf[64];
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const uint8_t* base = v.code_bytes();
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[0], buf, sizeof buf);
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CHECK(std::strcmp(buf, "LOAD_GLOBAL r0, 0") == 0); // x := G1(槽 0 偏移 0)
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CHECK(std::strcmp(buf, "LOAD_GLOBAL r8, 0") == 0); // x := G1(槽 0 偏移 0)
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[1], buf, sizeof buf);
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CHECK(std::strcmp(buf, "RET") == 0);
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return true;
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@@ -213,16 +213,16 @@ static bool test_io_ops() {
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CHECK(v.header().n_globals == 2);
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const isa::FuncRow r = v.func_row(0);
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CHECK(r.nregs == 2); // q + 1 临时
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CHECK(r.nregs == 10); // r8 起:q + 1 临时
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char buf[64];
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const uint8_t* base = v.code_bytes();
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[0], buf, sizeof buf);
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CHECK(std::strcmp(buf, "LOAD_I r0, 0") == 0); // q := I0_0(io.input → LOAD_I)
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CHECK(std::strcmp(buf, "LOAD_I r8, 0") == 0); // q := I0_0(io.input → LOAD_I)
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[1], buf, sizeof buf);
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CHECK(std::strcmp(buf, "MOVE r1, r0") == 0); // 临时 ← q
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CHECK(std::strcmp(buf, "MOVE r9, r8") == 0); // 临时 ← q
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[2], buf, sizeof buf);
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CHECK(std::strcmp(buf, "STORE_Q r1, 1") == 0); // Q0_0 := 临时(io.output → STORE_Q)
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CHECK(std::strcmp(buf, "STORE_Q r9, 1") == 0); // Q0_0 := 临时(io.output → STORE_Q)
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isa::disasm(reinterpret_cast<const uint32_t*>(base)[3], buf, sizeof buf);
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CHECK(std::strcmp(buf, "RET") == 0);
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return true;
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@@ -255,7 +255,7 @@ static bool test_layout() {
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char buf[64];
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isa::disasm(reinterpret_cast<const uint32_t*>(v.code_bytes())[0], buf, sizeof buf);
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CHECK(std::strcmp(buf, "LOAD_GLOBAL r0, 2") == 0); // x := I(INT 偏移 2)
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CHECK(std::strcmp(buf, "LOAD_GLOBAL r8, 2") == 0); // x := I(INT 偏移 2)
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return true;
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}
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@@ -289,7 +289,7 @@ static bool test_case03() {
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const isa::ImageView v = isa::ImageView::from(img);
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CHECK(v.ok());
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const isa::FuncRow r = v.func_row(0);
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CHECK(r.nregs == 4); // a b x + 1 临时
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CHECK(r.nregs == 12); // r8 起:a b x + 1 临时
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CHECK(r.code_len == 9);
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char buf[64];
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@@ -297,22 +297,22 @@ static bool test_case03() {
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const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
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// x := a AND b:MOVE r2,r0 / JF r2,+2 / MOVE r3,r1 / MOVE r2,r3
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isa::disasm(ins[0], buf, sizeof buf);
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CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);
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CHECK(std::strcmp(buf, "MOVE r10, r8") == 0);
|
||||
isa::disasm(ins[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JF r2, +2") == 0);
|
||||
CHECK(std::strcmp(buf, "JF r10, +2") == 0);
|
||||
isa::disasm(ins[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r3, r1") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r11, r9") == 0);
|
||||
isa::disasm(ins[3], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r3") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r10, r11") == 0);
|
||||
// x := a OR b:MOVE r2,r0 / JT r2,+2 / MOVE r3,r1 / MOVE r2,r3
|
||||
isa::disasm(ins[4], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r10, r8") == 0);
|
||||
isa::disasm(ins[5], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JT r2, +2") == 0);
|
||||
CHECK(std::strcmp(buf, "JT r10, +2") == 0);
|
||||
isa::disasm(ins[6], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r3, r1") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r11, r9") == 0);
|
||||
isa::disasm(ins[7], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r3") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r10, r11") == 0);
|
||||
isa::disasm(ins[8], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "RET") == 0);
|
||||
return true;
|
||||
@@ -332,16 +332,16 @@ static bool test_not() {
|
||||
const isa::ImageView v = isa::ImageView::from(img);
|
||||
CHECK(v.ok());
|
||||
const isa::FuncRow r = v.func_row(0);
|
||||
CHECK(r.nregs == 3); // a x + 1 临时
|
||||
CHECK(r.nregs == 11); // r8 起:a x + 1 临时
|
||||
CHECK(r.code_len == 3);
|
||||
|
||||
char buf[64];
|
||||
const uint8_t* base = v.code_bytes();
|
||||
const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
|
||||
isa::disasm(ins[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r0") == 0); // 临时 ← a
|
||||
CHECK(std::strcmp(buf, "MOVE r10, r8") == 0); // 临时 ← a
|
||||
isa::disasm(ins[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "NOT r1, r2") == 0); // x := NOT 临时
|
||||
CHECK(std::strcmp(buf, "NOT r9, r10") == 0); // x := NOT 临时
|
||||
isa::disasm(ins[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "RET") == 0);
|
||||
return true;
|
||||
@@ -357,7 +357,7 @@ static bool test_case04() {
|
||||
const isa::ImageView v = isa::ImageView::from(img);
|
||||
CHECK(v.ok());
|
||||
const isa::FuncRow r = v.func_row(0);
|
||||
CHECK(r.nregs == 5); // sel out + 3 临时(CMP 目的 + 两操作数)
|
||||
CHECK(r.nregs == 13); // r8 起:sel out + 3 临时
|
||||
CHECK(r.code_len == 14);
|
||||
|
||||
char buf[64];
|
||||
@@ -365,33 +365,33 @@ static bool test_case04() {
|
||||
const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
|
||||
// IF sel = 0 THEN:sel→r3、0→r4、CMP_EQ r2(常量序:0、10、1、20、30)
|
||||
isa::disasm(ins[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r3, r0") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r11, r8") == 0);
|
||||
isa::disasm(ins[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r4, 0") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r12, 0") == 0);
|
||||
isa::disasm(ins[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "CMP_EQ r2, r3, r4") == 0);
|
||||
CHECK(std::strcmp(buf, "CMP_EQ r10, r11, r12") == 0);
|
||||
isa::disasm(ins[3], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JF r2, +2") == 0); // 假 → elsif([6])
|
||||
CHECK(std::strcmp(buf, "JF r10, +2") == 0); // 假 → elsif([6])
|
||||
isa::disasm(ins[4], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r1, 1") == 0); // out := 10(常量 1)
|
||||
CHECK(std::strcmp(buf, "LOADK r9, 1") == 0); // out := 10(常量 1)
|
||||
isa::disasm(ins[5], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JMP +7") == 0); // → end([13])
|
||||
// ELSIF sel = 1
|
||||
isa::disasm(ins[6], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r3, r0") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r11, r8") == 0);
|
||||
isa::disasm(ins[7], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r4, 2") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r12, 2") == 0);
|
||||
isa::disasm(ins[8], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "CMP_EQ r2, r3, r4") == 0);
|
||||
CHECK(std::strcmp(buf, "CMP_EQ r10, r11, r12") == 0);
|
||||
isa::disasm(ins[9], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JF r2, +2") == 0); // 假 → else([12])
|
||||
CHECK(std::strcmp(buf, "JF r10, +2") == 0); // 假 → else([12])
|
||||
isa::disasm(ins[10], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r1, 3") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r9, 3") == 0);
|
||||
isa::disasm(ins[11], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JMP +1") == 0); // → end([13])
|
||||
// ELSE
|
||||
isa::disasm(ins[12], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r1, 4") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r9, 4") == 0);
|
||||
isa::disasm(ins[13], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "RET") == 0);
|
||||
return true;
|
||||
@@ -407,30 +407,30 @@ static bool test_case05() {
|
||||
const isa::ImageView v = isa::ImageView::from(img);
|
||||
CHECK(v.ok());
|
||||
const isa::FuncRow r = v.func_row(0);
|
||||
CHECK(r.nregs == 4); // n + 3 临时(CMP 目的 + 两操作数)
|
||||
CHECK(r.nregs == 12); // r8 起:n + 3 临时(条件结果 r9 + 两操作数)
|
||||
CHECK(r.code_len == 10);
|
||||
|
||||
char buf[64];
|
||||
const uint8_t* base = v.code_bytes();
|
||||
const uint32_t* ins = reinterpret_cast<const uint32_t*>(base);
|
||||
isa::disasm(ins[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r0, 0") == 0); // n := 0
|
||||
// L_loop [1]:n < 10 → r1
|
||||
CHECK(std::strcmp(buf, "LOADK r8, 0") == 0); // n := 0
|
||||
// L_loop [1]:n < 10 → r9
|
||||
isa::disasm(ins[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r0") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r10, r8") == 0);
|
||||
isa::disasm(ins[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r3, 1") == 0); // 常量 1 = 10
|
||||
CHECK(std::strcmp(buf, "LOADK r11, 1") == 0); // 常量 1 = 10
|
||||
isa::disasm(ins[3], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "CMP_LT r1, r2, r3") == 0);
|
||||
CHECK(std::strcmp(buf, "CMP_LT r9, r10, r11") == 0);
|
||||
isa::disasm(ins[4], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JF r1, +4") == 0); // 假 → RET([9])
|
||||
// n := n + 1(体语句临时复用 r1/r2)
|
||||
CHECK(std::strcmp(buf, "JF r9, +4") == 0); // 假 → RET([9])
|
||||
// n := n + 1(体语句临时复用 r9/r10)
|
||||
isa::disasm(ins[5], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r1, r0") == 0);
|
||||
CHECK(std::strcmp(buf, "MOVE r9, r8") == 0);
|
||||
isa::disasm(ins[6], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r2, 2") == 0); // 常量 2 = 1
|
||||
CHECK(std::strcmp(buf, "LOADK r10, 2") == 0); // 常量 2 = 1
|
||||
isa::disasm(ins[7], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "ADD r0, r1, r2") == 0);
|
||||
CHECK(std::strcmp(buf, "ADD r8, r9, r10") == 0);
|
||||
isa::disasm(ins[8], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "JMP -8") == 0); // 回 L_loop([1])
|
||||
isa::disasm(ins[9], buf, sizeof buf);
|
||||
@@ -448,7 +448,7 @@ static bool test_case07() {
|
||||
const isa::ImageView v = isa::ImageView::from(img);
|
||||
CHECK(v.ok());
|
||||
const isa::FuncRow r = v.func_row(0);
|
||||
CHECK(r.nregs == 6); // a b c eq + 2 临时(语句间复用)
|
||||
CHECK(r.nregs == 14); // r8 起:a b c eq + 2 临时
|
||||
|
||||
char buf[64];
|
||||
const uint8_t* base = v.code_bytes();
|
||||
@@ -456,10 +456,10 @@ static bool test_case07() {
|
||||
bool saw_mul = false, saw_div = false, saw_sub = false, saw_gt = false;
|
||||
for (uint32_t i = 0; i < r.code_len; ++i) {
|
||||
isa::disasm(ins[i], buf, sizeof buf);
|
||||
if (std::strstr(buf, "MUL r0, ")) saw_mul = true;
|
||||
if (std::strstr(buf, "DIV r1, ")) saw_div = true;
|
||||
if (std::strstr(buf, "SUB r2, ")) saw_sub = true;
|
||||
if (std::strstr(buf, "CMP_GT r3, ")) saw_gt = true;
|
||||
if (std::strstr(buf, "MUL r8, ")) saw_mul = true;
|
||||
if (std::strstr(buf, "DIV r9, ")) saw_div = true;
|
||||
if (std::strstr(buf, "SUB r10, ")) saw_sub = true;
|
||||
if (std::strstr(buf, "CMP_GT r11, ")) saw_gt = true;
|
||||
}
|
||||
CHECK(saw_mul && saw_div && saw_sub && saw_gt);
|
||||
return true;
|
||||
@@ -481,13 +481,63 @@ static bool test_case08() {
|
||||
CHECK(c1.tag == isa::types::Time && c1.value == 1250); // T#1s250ms
|
||||
|
||||
const isa::FuncRow r = v.func_row(0);
|
||||
CHECK(r.nregs == 2);
|
||||
CHECK(r.nregs == 10); // r8 起
|
||||
char buf[64];
|
||||
const uint32_t* ins = reinterpret_cast<const uint32_t*>(v.code_bytes());
|
||||
isa::disasm(ins[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r0, 0") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r8, 0") == 0);
|
||||
isa::disasm(ins[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r1, 1") == 0);
|
||||
CHECK(std::strcmp(buf, "LOADK r9, 1") == 0);
|
||||
return true;
|
||||
}
|
||||
|
||||
// ---- 13. 用例 13:FUNCTION + CALL(调用约定 r0 结果 / r1.. 参数)----
|
||||
|
||||
static bool test_case13() {
|
||||
std::vector<uint8_t> img;
|
||||
std::string err;
|
||||
CHECK(compile_case("13_function_call", &img, &err));
|
||||
|
||||
const isa::ImageView v = isa::ImageView::from(img);
|
||||
CHECK(v.ok());
|
||||
CHECK(v.header().n_funcs == 2);
|
||||
CHECK(v.header().entry_fn_id == 1); // MAIN 是第二个 POU
|
||||
|
||||
char buf[64];
|
||||
const uint8_t* base = v.code_bytes();
|
||||
// Add(fn_id 0):结果 r0、输入 r1(a) r2(b)、临时 r8/r9
|
||||
const isa::FuncRow fa = v.func_row(0);
|
||||
CHECK(fa.nregs == 10);
|
||||
CHECK(fa.code_len == 4);
|
||||
const uint32_t* ia = reinterpret_cast<const uint32_t*>(base);
|
||||
isa::disasm(ia[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r8, r1") == 0); // t ← a
|
||||
isa::disasm(ia[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r9, r2") == 0); // t ← b
|
||||
isa::disasm(ia[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "ADD r0, r8, r9") == 0); // 结果 r0
|
||||
isa::disasm(ia[3], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "RET") == 0);
|
||||
|
||||
// MAIN(fn_id 1):x 在 r8,实参临时 r9/r10
|
||||
const isa::FuncRow fm = v.func_row(1);
|
||||
CHECK(fm.nregs == 11);
|
||||
CHECK(fm.code_len == 7);
|
||||
const uint32_t* im = reinterpret_cast<const uint32_t*>(base) + fm.code_offset / 4;
|
||||
isa::disasm(im[0], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r9, 0") == 0); // 3
|
||||
isa::disasm(im[1], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "LOADK r10, 1") == 0); // 4
|
||||
isa::disasm(im[2], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r1, r9") == 0); // 参数 1 ← 3
|
||||
isa::disasm(im[3], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r2, r10") == 0); // 参数 2 ← 4
|
||||
isa::disasm(im[4], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "CALL 0") == 0);
|
||||
isa::disasm(im[5], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "MOVE r8, r0") == 0); // x ← 结果
|
||||
isa::disasm(im[6], buf, sizeof buf);
|
||||
CHECK(std::strcmp(buf, "RET") == 0);
|
||||
return true;
|
||||
}
|
||||
|
||||
@@ -504,6 +554,7 @@ int main() {
|
||||
if (!test_case05()) return 1;
|
||||
if (!test_case07()) return 1;
|
||||
if (!test_case08()) return 1;
|
||||
if (!test_case13()) return 1;
|
||||
std::printf("codegen_test: %d checks passed\n", g_checks);
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user