matos/core/syscall.c

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