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| author | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
|---|---|---|
| committer | Srikant Patnaik | 2015-01-13 15:08:24 +0530 |
| commit | 97327692361306d1e6259021bc425e32832fdb50 (patch) | |
| tree | fe9088f3248ec61e24f404f21b9793cb644b7f01 /arch/m68k/include/asm/div64.h | |
| parent | 2d05a8f663478a44e088d122e0d62109bbc801d0 (diff) | |
| parent | a3a8b90b61e21be3dde9101c4e86c881e0f06210 (diff) | |
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dirty fix to merging
Diffstat (limited to 'arch/m68k/include/asm/div64.h')
| -rw-r--r-- | arch/m68k/include/asm/div64.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/div64.h b/arch/m68k/include/asm/div64.h new file mode 100644 index 00000000..444ea8a0 --- /dev/null +++ b/arch/m68k/include/asm/div64.h @@ -0,0 +1,34 @@ +#ifndef _M68K_DIV64_H +#define _M68K_DIV64_H + +#ifdef CONFIG_CPU_HAS_NO_MULDIV64 +#include <asm-generic/div64.h> +#else + +#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 /* CONFIG_CPU_HAS_NO_MULDIV64 */ + +#endif /* _M68K_DIV64_H */ |