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| author | Takashi Iwai <tiwai@suse.de> | 2009-02-23 08:17:28 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-02-23 08:17:28 +0100 |
| commit | 66a101dda6b26ee566aa9cadcbea904a41d2b268 (patch) | |
| tree | e03b5d40b7b88bb0a2f432bceba4680086d6d3a1 /arch/m68k/include/asm/div64_mm.h | |
| parent | b1a0aac05f044e78a589bfd7a9e2334aa640eb45 (diff) | |
| parent | 28b7e343ee63454d563a71d2d5f769fc297fd5ad (diff) | |
Merge branch 'topic/hwdep-cleanup' into topic/hdsp
Diffstat (limited to 'arch/m68k/include/asm/div64_mm.h')
| -rw-r--r-- | arch/m68k/include/asm/div64_mm.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/div64_mm.h b/arch/m68k/include/asm/div64_mm.h new file mode 100644 index 000000000000..8243c931b5c0 --- /dev/null +++ b/arch/m68k/include/asm/div64_mm.h @@ -0,0 +1,28 @@ +#ifndef _M68K_DIV64_H +#define _M68K_DIV64_H + +#include <linux/types.h> + +/* n = n / base; return rem; */ + +#define do_div(n, base) ({ \ + union { \ + unsigned long n32[2]; \ + unsigned long long n64; \ + } __n; \ + unsigned long __rem, __upper; \ + \ + __n.n64 = (n); \ + if ((__upper = __n.n32[0])) { \ + asm ("divul.l %2,%1:%0" \ + : "=d" (__n.n32[0]), "=d" (__upper) \ + : "d" (base), "0" (__n.n32[0])); \ + } \ + asm ("divu.l %2,%1:%0" \ + : "=d" (__n.n32[1]), "=d" (__rem) \ + : "d" (base), "1" (__upper), "0" (__n.n32[1])); \ + (n) = __n.n64; \ + __rem; \ +}) + +#endif /* _M68K_DIV64_H */ |