C Compiler

A C89 to x64 assembly compiler.

Yet another project to learn compilation and programming techniques.

Supported Features

• Preprocessing: #include directive
• Types: primitives, enum, struct, pointer, function test code
• Statements: componend, if-else, while, for, break, continue, switch-case, return. test code
• Expressions: invocation, type casting, boolean/integer/bit/float/pointer operations, condition, comma, scalar/struct assignment. test code
• Recursive function. test code

Build

Open Visual Studio solution Project/cc.sln, build project cc with Debug configuration and x64 platform. This should generate Build/cc.exe.

Usage

$ cc.exe <source-file>

Example

$ type hello_world.c
int printf(const char * fmt, ...);
int main()
{
        printf("hello world.\n");
}

$ cc.exe hello_world.c
...

$ type hello_world.asm
PUBLIC main
EXTERN printf:PROC
CONST SEGMENT
$str0 DB 68H,65H,6cH,6cH,6fH,20H,77H,6fH,72H,6cH,64H,2eH,0aH,00H ; "hello world.\n"
ALIGN 16
$flt_80000000 DD 080000000r,080000000r,080000000r,080000000r ; -0.000000
$flt_00000000 DD 000000000r,000000000r,000000000r,000000000r ; 0.000000
CONST ENDS
_DATA SEGMENT
$sp0 DQ $str0
_DATA ENDS
_TEXT SEGMENT
main PROC
; return address:        [rbp + 8]
; non-volatile register: [rsp + 48, rbp + 8)
; local zone:            [rsp + 48, rsp + 48)
; temp  zone:            [rsp + 36, rsp + 48)
; spill zone:            [rsp + 16, rsp + 32)
; call  zone:            [rsp + 0, rsp + 8)
push rbp
mov rbp, rsp
push rsi
push rdi
sub rsp, 00000000000000030h
; mdup
; call
; pnew
; data
lea rax, QWORD PTR printf
mov QWORD PTR [rsp + 40], rax
; data
mov rax, QWORD PTR $sp0
mov rcx, rax
call printf
mov eax, eax
mov QWORD PTR [rsp + 24], rcx ; save spill
mov eax, eax
mov DWORD PTR [rsp + 36], eax
main ENDP
_TEXT ENDS
END

$ ml64 hello_world.asm hello_world.obj /link /OUT:hello_world.exe legacy_stdio_definitions.lib msvcrtd.lib
...

$ hello_world.exe
hello world.

Check this page for error 'ml64' is not recognized as an internal or external command.

Project Structre

• Build/ - cc.exe
• Source/ - compiler source code
• Test/ - testing C89 programs