x86/mm/pat: Don't report PAT on CPUs that don't support it
[linux/fpc-iii.git] / arch / powerpc / math-emu / fcmpo.c
blob5d644467221cc9109e9937796dd3eb8a00d21dbd
1 #include <linux/types.h>
2 #include <linux/errno.h>
3 #include <linux/uaccess.h>
5 #include <asm/sfp-machine.h>
6 #include <math-emu/soft-fp.h>
7 #include <math-emu/double.h>
9 int
10 fcmpo(u32 *ccr, int crfD, void *frA, void *frB)
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;
18 #ifdef DEBUG
19 printk("%s: %p (%08x) %d %p %p\n", __func__, ccr, *ccr, crfD, frA, frB);
20 #endif
22 FP_UNPACK_DP(A, frA);
23 FP_UNPACK_DP(B, frB);
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
30 if (A_c == FP_CLS_NAN || B_c == FP_CLS_NAN)
31 FP_SET_EXCEPTION(EFLAG_VXVC);
33 FP_CMP_D(cmp, A, B, 2);
34 cmp = code[(cmp + 1) & 3];
36 __FPU_FPSCR &= ~(0x1f000);
37 __FPU_FPSCR |= (cmp << 12);
39 *ccr &= ~(15 << ((7 - crfD) << 2));
40 *ccr |= (cmp << ((7 - crfD) << 2));
42 #ifdef DEBUG
43 printk("CR: %08x\n", *ccr);
44 #endif
46 return FP_CUR_EXCEPTIONS;