1#include <linux/types.h>
2#include <linux/errno.h>
3#include <asm/uaccess.h>
4
5#include <asm/sfp-machine.h>
6#include <math-emu/soft-fp.h>
7#include <math-emu/double.h>
8
9int
10fcmpo(u32 *ccr, int crfD, void *frA, void *frB)
11{
12	FP_DECL_D(A);
13	FP_DECL_D(B);
14	FP_DECL_EX;
15	int code[4] = { (1 << 3), (1 << 1), (1 << 2), (1 << 0) };
16	long cmp;
17
18#ifdef DEBUG
19	printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB);
20#endif
21
22	FP_UNPACK_DP(A, frA);
23	FP_UNPACK_DP(B, frB);
24
25#ifdef DEBUG
26	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
27	printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
28#endif
29
30	if (A_c == FP_CLS_NAN || B_c == FP_CLS_NAN)
31		FP_SET_EXCEPTION(EFLAG_VXVC);
32
33	FP_CMP_D(cmp, A, B, 2);
34	cmp = code[(cmp + 1) & 3];
35
36	__FPU_FPSCR &= ~(0x1f000);
37	__FPU_FPSCR |= (cmp << 12);
38
39	*ccr &= ~(15 << ((7 - crfD) << 2));
40	*ccr |= (cmp << ((7 - crfD) << 2));
41
42#ifdef DEBUG
43	printk("CR: %08x\n", *ccr);
44#endif
45
46	return FP_CUR_EXCEPTIONS;
47}
48