double g1(double a, long b, float c, int d);
// a in xmm0
// b in %rdi
// c in xmm1
// d in %rsi
double g2(int a, double *b, float *c, long d);
// a in %edi
// b in %rsi
// c in %rdx
// d in %rcx
double g3(double *a, double b, int c, float d);
// a in %rdi
// b in %rsi
// c in %edx
// d in %xmm0
double g4(float a, int *b, float c, double d);
// a in %xmm0
// b in %rdi
// c in %xmm1
// d in %rsi