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[PATCH] [MIPS] Clear softfpu exception state for round, trunc, ceil and floor

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MIPS FPU instructions should start with a clean softfpu status. This
is done for the arithmetic operations and cvt instructions, but not
for round, trunc, ceil and floor.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Chris Dearman 2011-02-08 19:03:30 -08:00 committed by Aurelien Jarno
parent cc2212c2f8
commit efd410373a
1 changed files with 16 additions and 0 deletions
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16
target-mips/op_helper.c
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@ -2282,6 +2282,7 @@ uint64_t helper_float_roundl_d(uint64_t fdt0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status); dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2295,6 +2296,7 @@ uint64_t helper_float_roundl_s(uint32_t fst0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status); dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2308,6 +2310,7 @@ uint32_t helper_float_roundw_d(uint64_t fdt0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status); wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2321,6 +2324,7 @@ uint32_t helper_float_roundw_s(uint32_t fst0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_nearest_even, &env->active_fpu.fp_status);
wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status); wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2334,6 +2338,7 @@ uint64_t helper_float_truncl_d(uint64_t fdt0)
{ {
uint64_t dt2; 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); dt2 = float64_to_int64_round_to_zero(fdt0, &env->active_fpu.fp_status);
update_fcr31(); update_fcr31();
if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID)) if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@ -2345,6 +2350,7 @@ uint64_t helper_float_truncl_s(uint32_t fst0)
{ {
uint64_t dt2; 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); dt2 = float32_to_int64_round_to_zero(fst0, &env->active_fpu.fp_status);
update_fcr31(); update_fcr31();
if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID)) if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@ -2356,6 +2362,7 @@ uint32_t helper_float_truncw_d(uint64_t fdt0)
{ {
uint32_t wt2; 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); wt2 = float64_to_int32_round_to_zero(fdt0, &env->active_fpu.fp_status);
update_fcr31(); update_fcr31();
if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID)) if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@ -2367,6 +2374,7 @@ uint32_t helper_float_truncw_s(uint32_t fst0)
{ {
uint32_t wt2; 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); wt2 = float32_to_int32_round_to_zero(fst0, &env->active_fpu.fp_status);
update_fcr31(); update_fcr31();
if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID)) if (GET_FP_CAUSE(env->active_fpu.fcr31) & (FP_OVERFLOW | FP_INVALID))
@ -2378,6 +2386,7 @@ uint64_t helper_float_ceill_d(uint64_t fdt0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status); dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2391,6 +2400,7 @@ uint64_t helper_float_ceill_s(uint32_t fst0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status); dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2404,6 +2414,7 @@ uint32_t helper_float_ceilw_d(uint64_t fdt0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status); wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2417,6 +2428,7 @@ uint32_t helper_float_ceilw_s(uint32_t fst0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_up, &env->active_fpu.fp_status);
wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status); wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2430,6 +2442,7 @@ uint64_t helper_float_floorl_d(uint64_t fdt0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status); dt2 = float64_to_int64(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2443,6 +2456,7 @@ uint64_t helper_float_floorl_s(uint32_t fst0)
{ {
uint64_t dt2; 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); set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status); dt2 = float32_to_int64(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2456,6 +2470,7 @@ uint32_t helper_float_floorw_d(uint64_t fdt0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status); wt2 = float64_to_int32(fdt0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;
@ -2469,6 +2484,7 @@ uint32_t helper_float_floorw_s(uint32_t fst0)
{ {
uint32_t wt2; 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); set_float_rounding_mode(float_round_down, &env->active_fpu.fp_status);
wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status); wt2 = float32_to_int32(fst0, &env->active_fpu.fp_status);
RESTORE_ROUNDING_MODE; RESTORE_ROUNDING_MODE;