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 /include/asm-m68k/div64.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 'include/asm-m68k/div64.h')
-rw-r--r-- | include/asm-m68k/div64.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/asm-m68k/div64.h b/include/asm-m68k/div64.h new file mode 100644 index 000000000000..9f65de1a2480 --- /dev/null +++ b/include/asm-m68k/div64.h | |||
@@ -0,0 +1,26 @@ | |||
1 | #ifndef _M68K_DIV64_H | ||
2 | #define _M68K_DIV64_H | ||
3 | |||
4 | /* n = n / base; return rem; */ | ||
5 | |||
6 | #define do_div(n, base) ({ \ | ||
7 | union { \ | ||
8 | unsigned long n32[2]; \ | ||
9 | unsigned long long n64; \ | ||
10 | } __n; \ | ||
11 | unsigned long __rem, __upper; \ | ||
12 | \ | ||
13 | __n.n64 = (n); \ | ||
14 | if ((__upper = __n.n32[0])) { \ | ||
15 | asm ("divul.l %2,%1:%0" \ | ||
16 | : "=d" (__n.n32[0]), "=d" (__upper) \ | ||
17 | : "d" (base), "0" (__n.n32[0])); \ | ||
18 | } \ | ||
19 | asm ("divu.l %2,%1:%0" \ | ||
20 | : "=d" (__n.n32[1]), "=d" (__rem) \ | ||
21 | : "d" (base), "1" (__upper), "0" (__n.n32[1])); \ | ||
22 | (n) = __n.n64; \ | ||
23 | __rem; \ | ||
24 | }) | ||
25 | |||
26 | #endif /* _M68K_DIV64_H */ | ||