thrvcc

Description

A C compiler for the risc-v instruction set, with features being refined.

Build

Install Dependencies

base dev tools:

sudo pacman -S base-devel

riscv cross compilation tool chain:

# for tool chain dependencies, see https://github.com/riscv-collab/riscv-gnu-toolchain#prerequisites
curl https://mirror.iscas.ac.cn/riscv-toolchains/git/riscv-collab/riscv-gnu-toolchain.sh | bash
cd riscv-gnu-toolchain
mkdir build
cd build
../configure --prefix=$HOME/riscv
make build-sim linux -j$(nproc)

Build with Makefile

cd thrvcc
# if cross compile
export RISCV=~/riscv
# if local riscv
export RISCV=
# binary
make thrvcc
# test
make test

Usage

./thrvcc -o out in.c
./thrvcc -S in.c
./thrvcc in.c
./thrvcc --help

TODO

operator

arithmetic operator

• + - * / % ++ --

relational operator

• == != > < >= <=

logical operator

• && || !

bitwise operator

• & | ^ ~ << >>

assignment operator

• = += -= *= /= %= <<= >>= &= ^= |=

pointer operator

• & *

other

• sizeof ?:

keywords

• auto
• break continue goto return
• if else switch case default
• do for while
• char✔ double✔ float✔ int✔ long✔ register✔ short✔ void✔
• enum struct typedef union
• const✔ extern✔ signed✔ unsigned✔ static✔ volatile✔

c99

• _Bool
• _Complex
• _Imaginary
• inline
• restrict

c11

• _Alignas
• _Alignof
• _Atomic
• _Generic
• _Noreturn
• _Static_assert
• _Thread_local

features

• local variable
• branch statement
• cyclic statement
• pointer
• function
• one-dimensional and multi-dimensional arrays
• global variable
• string
• escape character
• comment
• scope
• struct
• union
• short long long long
• void
• typedef
• sizeof
• type cast
• enum
• uncomplete array
• const expr
• initializer
• extern
• static
• do while
• signed unsigned
• function pointer
• separate out cc1
  ......

Authors and acknowledgment

Authors:
  TenHian
Related Projects:
  chibicc

License

MIT license