From: Mateja Marjanovic <[email protected]>
In case of dividing integers by zero, the result is unpredictable [1],
but according to the hardware, the result is not zero, but the dividend.
[1] MIPS® Architecture for Programmers
Volume IV-j: The MIPS64® SIMD
Architecture Module, Revision 1.12
Signed-off-by: Mateja Marjanovic <[email protected]>
---
target/mips/msa_helper.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/mips/msa_helper.c b/target/mips/msa_helper.c
index 46a5aac..bdfbc95 100644
--- a/target/mips/msa_helper.c
+++ b/target/mips/msa_helper.c
@@ -659,14 +659,14 @@ static inline int64_t msa_mod_s_df(uint32_t df, int64_t
arg1, int64_t arg2)
if (arg1 == DF_MIN_INT(df) && arg2 == -1) {
return 0;
}
- return arg2 ? arg1 % arg2 : 0;
+ return arg2 ? arg1 % arg2 : arg1;
}
static inline int64_t msa_mod_u_df(uint32_t df, int64_t arg1, int64_t arg2)
{
uint64_t u_arg1 = UNSIGNED(arg1, df);
uint64_t u_arg2 = UNSIGNED(arg2, df);
- return u_arg2 ? u_arg1 % u_arg2 : 0;
+ return u_arg2 ? u_arg1 % u_arg2 : u_arg1;
}
#define SIGNED_EVEN(a, df) \
--
2.7.4
