Luna/libs/libc/src/unistd.cpp

#include <luna/syscall.h>
#include <stdarg.h>
#include <unistd.h>

extern "C"
{
    int execv(const char*, char* const[])
    {
        return -1;
    }
    int execve(const char*, char* const[], char* const[])
    {
        return -1;
    }
    int execvp(const char*, char* const[])
    {
        return -1;
    }
    pid_t fork(void)
    {
        return -1;
    }

    long syscall(long number, ...)
    {
        typedef unsigned long int arg;
        long result;
        va_list ap;
        va_start(ap, number);
        switch (number)
        {
        case SYS_exit:
        case SYS_yield:
        case SYS_gettid:
        case SYS_rand: result = __luna_syscall0(number); break;
        case SYS_sleep: result = __luna_syscall1(number, va_arg(ap, arg)); break;
        case SYS_write:
        case SYS_version: {
            arg arg0 = va_arg(ap, arg);
            arg arg1 = va_arg(ap, arg);
            result = __luna_syscall2(number, arg0, arg1);
            break;
        }
        case SYS_paint: {
            arg arg0 = va_arg(ap, arg);
            arg arg1 = va_arg(ap, arg);
            arg arg2 = va_arg(ap, arg);
            arg arg3 = va_arg(ap, arg);
            arg arg4 = va_arg(ap, arg);
            result = __luna_syscall5(number, arg0, arg1, arg2, arg3, arg4);
            break;
        }
        default: result = -1; break;
        }
        va_end(ap);
        return result;
    }
}