diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/s390/math-emu/sfp-util.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/s390/math-emu/sfp-util.h')
-rw-r--r-- | arch/s390/math-emu/sfp-util.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/s390/math-emu/sfp-util.h b/arch/s390/math-emu/sfp-util.h new file mode 100644 index 000000000000..ab556b600f73 --- /dev/null +++ b/arch/s390/math-emu/sfp-util.h | |||
@@ -0,0 +1,63 @@ | |||
1 | #include <linux/kernel.h> | ||
2 | #include <linux/sched.h> | ||
3 | #include <linux/types.h> | ||
4 | #include <asm/byteorder.h> | ||
5 | |||
6 | #define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \ | ||
7 | unsigned int __sh = (ah); \ | ||
8 | unsigned int __sl = (al); \ | ||
9 | __asm__ (" alr %1,%3\n" \ | ||
10 | " brc 12,0f\n" \ | ||
11 | " ahi %0,1\n" \ | ||
12 | "0: alr %0,%2" \ | ||
13 | : "+&d" (__sh), "+d" (__sl) \ | ||
14 | : "d" (bh), "d" (bl) : "cc" ); \ | ||
15 | (sh) = __sh; \ | ||
16 | (sl) = __sl; \ | ||
17 | }) | ||
18 | |||
19 | #define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \ | ||
20 | unsigned int __sh = (ah); \ | ||
21 | unsigned int __sl = (al); \ | ||
22 | __asm__ (" slr %1,%3\n" \ | ||
23 | " brc 3,0f\n" \ | ||
24 | " ahi %0,-1\n" \ | ||
25 | "0: slr %0,%2" \ | ||
26 | : "+&d" (__sh), "+d" (__sl) \ | ||
27 | : "d" (bh), "d" (bl) : "cc" ); \ | ||
28 | (sh) = __sh; \ | ||
29 | (sl) = __sl; \ | ||
30 | }) | ||
31 | |||
32 | /* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */ | ||
33 | #define umul_ppmm(wh, wl, u, v) ({ \ | ||
34 | unsigned int __wh = u; \ | ||
35 | unsigned int __wl = v; \ | ||
36 | __asm__ (" ltr 1,%0\n" \ | ||
37 | " mr 0,%1\n" \ | ||
38 | " jnm 0f\n" \ | ||
39 | " alr 0,%1\n" \ | ||
40 | "0: ltr %1,%1\n" \ | ||
41 | " jnm 1f\n" \ | ||
42 | " alr 0,%0\n" \ | ||
43 | "1: lr %0,0\n" \ | ||
44 | " lr %1,1\n" \ | ||
45 | : "+d" (__wh), "+d" (__wl) \ | ||
46 | : : "0", "1", "cc" ); \ | ||
47 | wh = __wh; \ | ||
48 | wl = __wl; \ | ||
49 | }) | ||
50 | |||
51 | #define udiv_qrnnd(q, r, n1, n0, d) \ | ||
52 | do { unsigned long __r; \ | ||
53 | (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \ | ||
54 | (r) = __r; \ | ||
55 | } while (0) | ||
56 | extern unsigned long __udiv_qrnnd (unsigned long *, unsigned long, | ||
57 | unsigned long , unsigned long); | ||
58 | |||
59 | #define UDIV_NEEDS_NORMALIZATION 0 | ||
60 | |||
61 | #define abort() return 0 | ||
62 | |||
63 | #define __BYTE_ORDER __BIG_ENDIAN | ||