[Qemu-devel] [PATCH v2 13/20] target-i386: fix helper_fdiv() wrt softfloat

[Aurelien Jarno <aurelien@aurel32.net>]

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 target-i386/exec.h      |    4 ++++
 target-i386/op_helper.c |    5 +++--
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/target-i386/exec.h b/target-i386/exec.h
index 211cc8c..b2af894 100644
--- a/target-i386/exec.h
+++ b/target-i386/exec.h
@@ -111,6 +111,7 @@ static inline void svm_check_intercept(uint32_t type)
 #define floatx_to_float32 floatx80_to_float32
 #define floatx_to_float64 floatx80_to_float64
 #define floatx_add floatx80_add
+#define floatx_div floatx80_div
 #define floatx_mul floatx80_mul
 #define floatx_sub floatx80_sub
 #define floatx_abs floatx80_abs
@@ -120,6 +121,7 @@ static inline void svm_check_intercept(uint32_t type)
 #define floatx_compare floatx80_compare
 #define floatx_compare_quiet floatx80_compare_quiet
 #define floatx_is_any_nan floatx80_is_any_nan
+#define floatx_is_zero floatx80_is_zero
 #else
 #define floatx_to_int32 float64_to_int32
 #define floatx_to_int64 float64_to_int64
@@ -132,6 +134,7 @@ static inline void svm_check_intercept(uint32_t type)
 #define floatx_to_float32 float64_to_float32
 #define floatx_to_float64(x, e) (x)
 #define floatx_add float64_add
+#define floatx_div float64_div
 #define floatx_mul float64_mul
 #define floatx_sub float64_sub
 #define floatx_abs float64_abs
@@ -141,6 +144,7 @@ static inline void svm_check_intercept(uint32_t type)
 #define floatx_compare float64_compare
 #define floatx_compare_quiet float64_compare_quiet
 #define floatx_is_any_nan float64_is_any_nan
+#define floatx_is_zero float64_is_zero
 #endif
 
 #define RC_MASK         0xc00
diff --git a/target-i386/op_helper.c b/target-i386/op_helper.c
index a4bf734..b22462f 100644
--- a/target-i386/op_helper.c
+++ b/target-i386/op_helper.c
@@ -3440,9 +3440,10 @@ static void fpu_set_exception(int mask)
 
 static inline CPU86_LDouble helper_fdiv(CPU86_LDouble a, CPU86_LDouble b)
 {
-    if (b == 0.0)
+    if (floatx_is_zero(b)) {
         fpu_set_exception(FPUS_ZE);
-    return a / b;
+    }
+    return floatx_div(a, b, &env->fp_status);
 }
 
 static void fpu_raise_exception(void)
-- 
1.7.2.3