diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/include/asm/div64.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/x86/include/asm/div64.h b/arch/x86/include/asm/div64.h index 9b8cb50768c2..b8f1dc0761e4 100644 --- a/arch/x86/include/asm/div64.h +++ b/arch/x86/include/asm/div64.h @@ -74,16 +74,26 @@ static inline u64 mul_u32_u32(u32 a, u32 b) #else # include <asm-generic/div64.h> -static inline u64 mul_u64_u32_div(u64 a, u32 mul, u32 div) +/* + * Will generate an #DE when the result doesn't fit u64, could fix with an + * __ex_table[] entry when it becomes an issue. + */ +static inline u64 mul_u64_u64_div_u64(u64 a, u64 mul, u64 div) { u64 q; asm ("mulq %2; divq %3" : "=a" (q) - : "a" (a), "rm" ((u64)mul), "rm" ((u64)div) + : "a" (a), "rm" (mul), "rm" (div) : "rdx"); return q; } +#define mul_u64_u64_div_u64 mul_u64_u64_div_u64 + +static inline u64 mul_u64_u32_div(u64 a, u32 mul, u32 div) +{ + return mul_u64_u64_div_u64(a, mul, div); +} #define mul_u64_u32_div mul_u64_u32_div #endif /* CONFIG_X86_32 */ |