#include <musl-glue.h>
#include <debug.h>

syscall_handler syscall_handlers[440] = {
    [SYSCALL_BRK] = k_brk,
    [SYSCALL_IOCTL] = k_ioctl,
    [SYSCALL_WRITEV] = k_writev,
    [SYSCALL_SCHED_YIELD] = k_sched_yield,
    [SYSCALL_MMAP] = k_mmap,
};

syscall_handler set_syscall_handler(long num, syscall_handler handler)
{
    syscall_handler old = syscall_handlers[num];
    syscall_handlers[num] = handler;
    return old;
}

long syscall0(long num)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](0, 0, 0, 0, 0, 0);
    else
        PANIC("Unknown syscall: %d()\n", num);
    return retval;
}

long syscall1(long num, long a1)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, 0, 0, 0, 0, 0);
    else
        PANIC("Unknown syscall: %d(%x)\n", num, a1);
    return retval;
}

long syscall2(long num, long a1, long a2)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, a2, 0, 0, 0, 0);
    else
    PANIC("Unknown syscall: %d(%x, %x)\n", num, a1, a2);
    return retval;
}

long syscall3(long num, long a1, long a2, long a3)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, a2, a3, 0, 0, 0);
    else
    PANIC("Unknown syscall: %d(%x, %x, %x)\n", num, a1, a2, a3);
    return retval;
}

long syscall4(long num, long a1, long a2, long a3, long a4)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, a2, a3, a4, 0, 0);
    else
    PANIC("Unknown syscall: %d(%x, %x, %x, %x)\n", num, a1, a2, a3, a4);
    return retval;
}

long syscall5(long num, long a1, long a2, long a3, long a4, long a5)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, a2, a3, a4, a5, 0);
    else
    PANIC("Unknown syscall: %d(%x, %x, %x, %x, %x)\n", num, a1, a2, a3, a4, a5);
    return retval;
}

long syscall6(long num, long a1, long a2, long a3, long a4, long a5, long a6)
{
    long retval = 0;
    if(syscall_handlers[num])
        retval = syscall_handlers[num](a1, a2, a3, a4, a5, a6);
    else
        PANIC("Unknown syscall: %d(%x, %x, %x, %x, %x, %x)\n", num, a1, a2, a3, a4, a5, a6);
    return retval;
}


size_t auxv[] = {0};

void musl_init()
{
    __libc.auxv = auxv;
}