matos/core/syscall.c
2021-11-06 00:13:40 +01:00

37 lines
886 B
C

#include "keyboard.h"
#include "klibc.h"
#include "stdarg.h"
#include "syscall.h"
#include "thread.h"
int syscallExecute(int syscallId, const struct cpu_state *userCtx){
int ret;
switch (syscallId) {
case SYSCALL_ID_EXIT:
uint status;
ret = syscallGet1arg(userCtx, &status);
if(ret != 0)
break;
threadExit();
assert(0);
break;
case SYSCALL_ID_YOLO:
ret = printf("YOLO FROM USERSPACE\n");
break;
case SYSCALL_ID_PUTC:
unsigned int c;
ret = syscallGet1arg(userCtx, &c);
putc(c);
break;
case SYSCALL_ID_READ:
ret = keyboardRead();
break;
default:
printf("Unknon syscall id %d\n", syscallId);
ret = -ENOENT;
}
return ret;
}