diff options
Diffstat (limited to 'lib/divsi3.c')
| -rw-r--r-- | lib/divsi3.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/divsi3.c b/lib/divsi3.c index 0d81cb80c37c..cd19de9525c0 100644 --- a/lib/divsi3.c +++ b/lib/divsi3.c @@ -18,7 +18,7 @@ su_int COMPILER_RT_ABI __udivsi3(su_int n, su_int d); /* Returns: a / b */ -ARM_EABI_FNALIAS(idiv, divsi3); +ARM_EABI_FNALIAS(idiv, divsi3) COMPILER_RT_ABI si_int __divsi3(si_int a, si_int b) @@ -29,5 +29,11 @@ __divsi3(si_int a, si_int b) a = (a ^ s_a) - s_a; /* negate if s_a == -1 */ b = (b ^ s_b) - s_b; /* negate if s_b == -1 */ s_a ^= s_b; /* sign of quotient */ - return (__udivsi3(a, b) ^ s_a) - s_a; /* negate if s_a == -1 */ + /* + * On CPUs without unsigned hardware division support, + * this calls __udivsi3 (notice the cast to su_int). + * On CPUs with unsigned hardware division support, + * this uses the unsigned division instruction. + */ + return ((su_int)a/(su_int)b ^ s_a) - s_a; /* negate if s_a == -1 */ } |