Chroma/global/crt0.c


extern void Exit(int code);
extern int Main();

extern void _init();

void _start() {
    _init();
    unsigned long long zero = 0;
    __asm__ __volatile__("movq %%rbp, %[input]" : : [input] "m" (zero) : );
    int ex = Main();
    Exit(ex);
}
Add support for C++ This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations. The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build. 2020-08-27 00:39:56 +00:00
			`extern void Exit(int code);`
			`extern int Main();`

			`extern void _init();`

			`void _start() {`
			`_init();`
Adjust the crt0 file to insert a null stack frame before calling the kernel. Provides a solid base for the stack unwinding. 2020-11-09 18:44:42 +00:00			`unsigned long long zero = 0;`
			`__asm__ __volatile__("movq %%rbp, %[input]" : : [input] "m" (zero) : );`
Add support for C++ This was a doozy. I had to recompile gcc with a custom target to get it to output the CRT{BEGIN/END}.o files with proper 64 bit relocations. The CMakeLists.txt file was also edited to allow these files to be linked (thereby actually adding the support) as well as to automatically create the boot image upon build. 2020-08-27 00:39:56 +00:00			`int ex = Main();`
			`Exit(ex);`
			`}`