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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /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.h26
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 */