Toycc compiler is developed based on Rui's chibicc. While chibicc generates x86 assemble language as output target, toycc compiles C language and generates RISC-V assemble language.
Toycc supports almost all mandatory features and most optional features of C11 as well as a few GCC language extensions. And is able to compile hundreds of thousands of lines of real-world C code correctly.
Before compiling the project and executing test cases, it is necessary to install dependent software:
sudo apt-get install gcc-riscv64-linux-gnu qemu-user qemu-system-misc
- Compile Toycc Compiler:
make
- Run test cases with qemu-user:
make test
- Toycc compiler runs self-host:
make selfhost
- The self-host compiler runs test cases under qemu:
make selfhost_test
- Integrated all functions above:
make all
- Specify third-party application compilation and tests, which is supported under RISC-V environment only:
make thirdparty_sqlite
make thirdparty_libpng
make thirdparty_git
make thirdparty_tinycc
make thirdparty_cpython
- Run all third-party application compilation and corresponding tests:
make thirdparty_all
Toycc 包含以下阶段：
-
词法分析：分词器接受字符串作为输入，拆分处理为标记列表并返回。
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预处理：预处理器将标记列表作为输入，输出宏拓展后新的标记列表。同时在宏扩展过程中，解析预处理器指令。
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语法分析：递归派生解析器根据预处理器的输出，构造抽象语法树（AST）。同时也为每个AST节点添加类型。
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代码生成：代码生成器对给定的AST节点生成汇编文本。