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