pepperOS/docs/SYSCALLS.md

Pepper kernel system call table

The following table contains all of the system calls supported by PepperOS, as well as their arguments. The explanation for what every system call does is available as a comment above each function in corresponding files in the src/syscall folder.

Name	Number (%rax)	arg0 (%rdi)	arg1 (%rsi)	arg2 (%rdx)
sys_read	0	unsigned int fd	char* buf	size_t count
sys_write	1	unsigned int fd	const char* buf	size_t count
sys_open	2	const char* filename	int flags
sys_close	3	unsigned int fd

| sys_lseek | 8 | unsigned int fd | int offset | int whence | | sys_tell | 9 | unsigned int fd | | sys_eof | 10 | unsigned int fd | | sys_draw | 11 | const uint8_t* src | int width | int height | int channels |

| sys_exit | 60 | int error_code | | |