extern int printf(const char *,...);
// extern void *alloca(int);

#define A0 0xa0a0a0a0
#define A1 0xa1a1a1a1
#define A2 0xa2a2a2a2
#define A3 0xa3a3a3a3
#define A4 0xa4a4a4a4

#define L0 0xb0b0b0b0
#define L1 0xb1b1b1b1
#define L2 0xb2b2b2b2
#define L3 0xb3b3b3b3
#define L4 0xb4b4b4b4

void *ret;

void
frame(int a0,int a1,int a2)
{
    int l0 = L0;
    int *top = (int *)__builtin_alloca(16);
    int *p;
    int i = 0;
    int l1 = L1;

    *top = L2;
    for(p = top;p<top+0x100; ) {
	if (*p==(int)ret) {
	    printf("%04x: ret address\n",i);
	} else if (*p==A0) {
	    printf("%04x: caller arg 1\n",i);
	} else if (*p==A2) {
	    printf("%04x: caller arg last\n",i);
	} else if (*p==L0) {
	    printf("%04x: local var top\n",i);
	} else if (*p==L1) {
	    printf("%04x: local var end\n",i);
	} else if (*p==L2) {
	    printf("%04x: stack top (alloca)\n",i);
	}
	i+= sizeof(int);
	p++;
    }
}


int
main()
{
    ret = &&label;
    frame(A0,A1,A2);
label:
    return 0;
}