diff options
Diffstat (limited to 'arch/powerpc/math-emu/fmadds.c')
-rw-r--r-- | arch/powerpc/math-emu/fmadds.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/fmadds.c b/arch/powerpc/math-emu/fmadds.c new file mode 100644 index 000000000000..0f70bba9445e --- /dev/null +++ b/arch/powerpc/math-emu/fmadds.c | |||
@@ -0,0 +1,49 @@ | |||
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 | #include "single.h" | ||
8 | |||
9 | int | ||
10 | fmadds(void *frD, void *frA, void *frB, void *frC) | ||
11 | { | ||
12 | FP_DECL_D(R); | ||
13 | FP_DECL_D(A); | ||
14 | FP_DECL_D(B); | ||
15 | FP_DECL_D(C); | ||
16 | FP_DECL_D(T); | ||
17 | int ret = 0; | ||
18 | |||
19 | #ifdef DEBUG | ||
20 | printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC); | ||
21 | #endif | ||
22 | |||
23 | __FP_UNPACK_D(A, frA); | ||
24 | __FP_UNPACK_D(B, frB); | ||
25 | __FP_UNPACK_D(C, frC); | ||
26 | |||
27 | #ifdef DEBUG | ||
28 | printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); | ||
29 | printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); | ||
30 | printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); | ||
31 | #endif | ||
32 | |||
33 | if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || | ||
34 | (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) | ||
35 | ret |= EFLAG_VXIMZ; | ||
36 | |||
37 | FP_MUL_D(T, A, C); | ||
38 | |||
39 | if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) | ||
40 | ret |= EFLAG_VXISI; | ||
41 | |||
42 | FP_ADD_D(R, T, B); | ||
43 | |||
44 | #ifdef DEBUG | ||
45 | printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | ||
46 | #endif | ||
47 | |||
48 | return (ret | __FP_PACK_DS(frD, R)); | ||
49 | } | ||