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| author | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-28 22:22:40 +0000 |
|---|---|---|
| committer | aurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-03-28 22:22:40 +0000 |
| commit | 41e0c701599de298beec6853f9bb055365e51174 (patch) | |
| tree | 855c8e0721054e8222ffc771ad2a73240a6a0f76 /target-mips | |
| parent | 36556b20c5c9a02f5e238435cd41bf67740359ee (diff) | |
| download | qemu-41e0c701599de298beec6853f9bb055365e51174.tar.gz | |
target-mips: implement FPU Flush-To-Zero mode
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6914 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-mips')
| -rw-r--r-- | target-mips/op_helper.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/target-mips/op_helper.c b/target-mips/op_helper.c index 0162ac1770..b28ee933f9 100644 --- a/target-mips/op_helper.c +++ b/target-mips/op_helper.c @@ -1879,6 +1879,9 @@ unsigned int ieee_rm[] = { #define RESTORE_ROUNDING_MODE \ set_float_rounding_mode(ieee_rm[env->active_fpu.fcr31 & 3], &env->active_fpu.fp_status) +#define RESTORE_FLUSH_MODE \ + set_flush_to_zero((env->active_fpu.fcr31 & (1 << 24)) != 0, &env->active_fpu.fp_status); + target_ulong helper_cfc1 (uint32_t reg) { target_ulong t0; @@ -1934,6 +1937,8 @@ void helper_ctc1 (target_ulong t0, uint32_t reg) } /* set rounding mode */ RESTORE_ROUNDING_MODE; + /* set flush-to-zero mode */ + RESTORE_FLUSH_MODE; set_float_exception_flags(0, &env->active_fpu.fp_status); if ((GET_FP_ENABLE(env->active_fpu.fcr31) | 0x20) & GET_FP_CAUSE(env->active_fpu.fcr31)) helper_raise_exception(EXCP_FPE); |