diff options
Diffstat (limited to 'target/arm/cpu.c')
| -rw-r--r-- | target/arm/cpu.c | 46 |
1 files changed, 14 insertions, 32 deletions
diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 32dc7c1..656070a 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -169,28 +169,6 @@ void arm_register_el_change_hook(ARMCPU *cpu, ARMELChangeHookFn *hook, QLIST_INSERT_HEAD(&cpu->el_change_hooks, entry, node); } -/* - * Set the float_status behaviour to match the Arm defaults: - * * tininess-before-rounding - * * 2-input NaN propagation prefers SNaN over QNaN, and then - * operand A over operand B (see FPProcessNaNs() pseudocode) - * * 3-input NaN propagation prefers SNaN over QNaN, and then - * operand C over A over B (see FPProcessNaNs3() pseudocode, - * but note that for QEMU muladd is a * b + c, whereas for - * the pseudocode function the arguments are in the order c, a, b. - * * 0 * Inf + NaN returns the default NaN if the input NaN is quiet, - * and the input NaN if it is signalling - * * Default NaN has sign bit clear, msb frac bit set - */ -static void arm_set_default_fp_behaviours(float_status *s) -{ - set_float_detect_tininess(float_tininess_before_rounding, s); - set_float_2nan_prop_rule(float_2nan_prop_s_ab, s); - set_float_3nan_prop_rule(float_3nan_prop_s_cab, s); - set_float_infzeronan_rule(float_infzeronan_dnan_if_qnan, s); - set_float_default_nan_pattern(0b01000000, s); -} - static void cp_reg_reset(gpointer key, gpointer value, gpointer opaque) { /* Reset a single ARMCPRegInfo register */ @@ -568,16 +546,20 @@ static void arm_cpu_reset_hold(Object *obj, ResetType type) env->sau.ctrl = 0; } - set_flush_to_zero(1, &env->vfp.standard_fp_status); - set_flush_inputs_to_zero(1, &env->vfp.standard_fp_status); - set_default_nan_mode(1, &env->vfp.standard_fp_status); - set_default_nan_mode(1, &env->vfp.standard_fp_status_f16); - arm_set_default_fp_behaviours(&env->vfp.fp_status_a32); - arm_set_default_fp_behaviours(&env->vfp.fp_status_a64); - arm_set_default_fp_behaviours(&env->vfp.standard_fp_status); - arm_set_default_fp_behaviours(&env->vfp.fp_status_f16_a32); - arm_set_default_fp_behaviours(&env->vfp.fp_status_f16_a64); - arm_set_default_fp_behaviours(&env->vfp.standard_fp_status_f16); + set_flush_to_zero(1, &env->vfp.fp_status[FPST_STD]); + set_flush_inputs_to_zero(1, &env->vfp.fp_status[FPST_STD]); + set_default_nan_mode(1, &env->vfp.fp_status[FPST_STD]); + set_default_nan_mode(1, &env->vfp.fp_status[FPST_STD_F16]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_A32]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_A64]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_STD]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_A32_F16]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_A64_F16]); + arm_set_default_fp_behaviours(&env->vfp.fp_status[FPST_STD_F16]); + arm_set_ah_fp_behaviours(&env->vfp.fp_status[FPST_AH]); + set_flush_to_zero(1, &env->vfp.fp_status[FPST_AH]); + set_flush_inputs_to_zero(1, &env->vfp.fp_status[FPST_AH]); + arm_set_ah_fp_behaviours(&env->vfp.fp_status[FPST_AH_F16]); #ifndef CONFIG_USER_ONLY if (kvm_enabled()) { |