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#include "pk.h"
#include "atomic.h"
#include "frontend.h"
#include "pcr.h"
sysret_t frontend_syscall(long n, long a0, long a1, long a2, long a3)
{
static volatile long magic_mem[8];
static spinlock_t lock = SPINLOCK_INIT;
spinlock_lock(&lock);
magic_mem[0] = n;
magic_mem[1] = a0;
magic_mem[2] = a1;
magic_mem[3] = a2;
magic_mem[4] = a3;
mtpcr(magic_mem,16);
while(mfpcr(17) == 0);
sysret_t ret = {magic_mem[0],magic_mem[1]};
spinlock_unlock(&lock);
return ret;
}
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