1#include <linux/types.h>
2#include <linux/errno.h>
3#include <asm/uaccess.h>
4
5#include "soft-fp.h"
6#include "double.h"
7
8int
9fcmpo(u32 *ccr, int crfD, void *frA, void *frB)
10{
11	FP_DECL_D(A);
12	FP_DECL_D(B);
13	int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
14	long cmp;
15	int ret = 0;
16
17#ifdef DEBUG
18	printk("%s: %p (%08x) %d %p %p\n", __FUNCTION__, ccr, *ccr, crfD, frA, frB);
19#endif
20
21	__FP_UNPACK_D(A, frA);
22	__FP_UNPACK_D(B, frB);
23
24#ifdef DEBUG
25	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
26	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
27#endif
28
29	if (A_c == FP_CLS_NAN || B_c == FP_CLS_NAN)
30		ret |= EFLAG_VXVC;
31
32	FP_CMP_D(cmp, A, B, 2);
33	cmp = code[(cmp + 1) & 3];
34
35	__FPU_FPSCR &= ~(0x1f000);
36	__FPU_FPSCR |= (cmp << 12);
37
38	*ccr &= ~(15 << ((7 - crfD) << 2));
39	*ccr |= (cmp << ((7 - crfD) << 2));
40
41#ifdef DEBUG
42	printk("CR: %08x\n", *ccr);
43#endif
44
45	return ret;
46}
47