From 5b954e623db71d3df2d9af1825ec3815137a06a7 Mon Sep 17 00:00:00 2001
From: Bhanu Chetlapalli <bhanu@mips.com>
Date: Tue, 31 Jan 2012 16:31:29 -0800
Subject: [MIPS] Clear softfpu status before emulating FPU instructions

This applies to round, trunc, ceil and floor instructions

Change-Id: I4a5f1619ecd8fe2d7ce508f8e569be129a8b1e34
Signed-off-by: Chris Dearman <chris@mips.com>
---
 target-mips/op_helper.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c
index 61a39df..565cf94 100644
--- a/target-mips/op_helper.c
+++ b/target-mips/op_helper.c
@@ -2230,6 +2230,7 @@ uint64_t helper_float_roundl_d(uint64_t fdt0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
     dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2243,6 +2244,7 @@ uint64_t helper_float_roundl_s(uint32_t fst0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
     dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2256,6 +2258,7 @@ uint32_t helper_float_roundw_d(uint64_t fdt0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
     wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2269,6 +2272,7 @@ uint32_t helper_float_roundw_s(uint32_t fst0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
     wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2282,6 +2286,7 @@ uint64_t helper_float_truncl_d(uint64_t fdt0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     dt2 = float64_to_int64_round_to_zero(fdt0, &env->active_fpu.fp_status);
     update_fcr31();
     if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@@ -2293,6 +2298,7 @@ uint64_t helper_float_truncl_s(uint32_t fst0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     dt2 = float32_to_int64_round_to_zero(fst0, &env->active_fpu.fp_status);
     update_fcr31();
     if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@@ -2304,6 +2310,7 @@ uint32_t helper_float_truncw_d(uint64_t fdt0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     wt2 = float64_to_int32_round_to_zero(fdt0, &env->active_fpu.fp_status);
     update_fcr31();
     if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@@ -2315,6 +2322,7 @@ uint32_t helper_float_truncw_s(uint32_t fst0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     wt2 = float32_to_int32_round_to_zero(fst0, &env->active_fpu.fp_status);
     update_fcr31();
     if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@@ -2326,6 +2334,7 @@ uint64_t helper_float_ceill_d(uint64_t fdt0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
     dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2339,6 +2348,7 @@ uint64_t helper_float_ceill_s(uint32_t fst0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
     dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2352,6 +2362,7 @@ uint32_t helper_float_ceilw_d(uint64_t fdt0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
     wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2365,6 +2376,7 @@ uint32_t helper_float_ceilw_s(uint32_t fst0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
     wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2378,6 +2390,7 @@ uint64_t helper_float_floorl_d(uint64_t fdt0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
     dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2391,6 +2404,7 @@ uint64_t helper_float_floorl_s(uint32_t fst0)
 {
     uint64_t dt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
     dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2404,6 +2418,7 @@ uint32_t helper_float_floorw_d(uint64_t fdt0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
     wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
@@ -2417,6 +2432,7 @@ uint32_t helper_float_floorw_s(uint32_t fst0)
 {
     uint32_t wt2;
 
+    set_float_exception_flags(0, &env->active_fpu.fp_status);
     set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
     wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
     RESTORE_ROUNDING_MODE;
-- 
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