diff options
Diffstat (limited to 'target-mips/translate_init.c')
| -rw-r--r-- | target-mips/translate_init.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c index 0b70d05449..a69a724d2e 100644 --- a/target-mips/translate_init.c +++ b/target-mips/translate_init.c @@ -84,6 +84,7 @@ struct mips_def_t { int32_t CP0_TCStatus_rw_bitmask; int32_t CP0_SRSCtl; int32_t CP1_fcr0; + int32_t MSAIR; int32_t SEGBITS; int32_t PABITS; int32_t CP0_SRSConf0_rw_bitmask; @@ -729,3 +730,36 @@ static void mvp_init (CPUMIPSState *env, const mips_def_t *def) (0x0 << CP0MVPC1_PCX) | (0x0 << CP0MVPC1_PCP2) | (0x1 << CP0MVPC1_PCP1); } + +static void msa_reset(CPUMIPSState *env) +{ +#ifdef CONFIG_USER_ONLY + /* MSA access enabled */ + env->CP0_Config5 |= 1 << CP0C5_MSAEn; + env->CP0_Status |= (1 << CP0St_CU1) | (1 << CP0St_FR); +#endif + + /* MSA CSR: + - non-signaling floating point exception mode off (NX bit is 0) + - Cause, Enables, and Flags are all 0 + - round to nearest / ties to even (RM bits are 0) */ + env->active_tc.msacsr = 0; + + /* tininess detected after rounding.*/ + set_float_detect_tininess(float_tininess_after_rounding, + &env->active_tc.msa_fp_status); + + /* clear float_status exception flags */ + set_float_exception_flags(0, &env->active_tc.msa_fp_status); + + /* set float_status rounding mode */ + set_float_rounding_mode(float_round_nearest_even, + &env->active_tc.msa_fp_status); + + /* set float_status flush modes */ + set_flush_to_zero(0, &env->active_tc.msa_fp_status); + set_flush_inputs_to_zero(0, &env->active_tc.msa_fp_status); + + /* clear float_status nan mode */ + set_default_nan_mode(0, &env->active_tc.msa_fp_status); +} |