// Perform a system call. | |
// Unused parameters should be set to 0. | |
int __trap0(unsigned long func, unsigned long p1, unsigned long p2, unsigned long p3) | |
{ | |
int ret = 0; | |
asm volatile ("nop\n\tor %%4,%%0,%0" : : "r"(func)); | |
asm volatile ("nop\n\tor %%5,%%0,%0" : : "r"(p1)); | |
asm volatile ("nop\n\tor %%6,%%0,%0" : : "r"(p2)); | |
asm volatile ("nop\n\tor %%7,%%0,%0" : : "r"(p3)); | |
asm volatile ("nop\n\tor %%11,%%0,%0" : : "r"(func)); | |
asm volatile ("syscall\n\tnop\n\tor %0,%%0,%%2" : "=r"(ret)); | |
return ret; | |
} |