diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2018-05-10 14:48:17 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2018-05-17 15:27:15 -0700 |
| commit | 03385dfdaaa2dc31bbd07d13244a6b037bfab4cc (patch) | |
| tree | 77e87ee1eec1c3e5e6b2824ad2f6ce485a574a6f /target | |
| parent | 5240a30dcc6ca85dc9352f351e2cc326402288ed (diff) | |
fpu/softfloat: Specialize on snan_bit_is_one
Only MIPS requires snan_bit_is_one to be variable. While we are
specializing softfloat behaviour, allow other targets to eliminate
this runtime check.
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Yongbok Kim <yongbok.kim@mips.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Alexander Graf <agraf@suse.de>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/hppa/cpu.c | 1 | ||||
| -rw-r--r-- | target/ppc/fpu_helper.c | 1 | ||||
| -rw-r--r-- | target/sh4/cpu.c | 1 | ||||
| -rw-r--r-- | target/unicore32/cpu.c | 2 |
4 files changed, 0 insertions, 5 deletions
diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c index c261b6b090..00bf444620 100644 --- a/target/hppa/cpu.c +++ b/target/hppa/cpu.c @@ -141,7 +141,6 @@ static void hppa_cpu_initfn(Object *obj) cs->env_ptr = env; cs->exception_index = -1; cpu_hppa_loaded_fr0(env); - set_snan_bit_is_one(true, &env->fp_status); cpu_hppa_put_psw(env, PSW_W); } diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index 9ae418a577..d31a933cbb 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -3382,7 +3382,6 @@ void helper_xssqrtqp(CPUPPCState *env, uint32_t opcode) xt.f128 = xb.f128; } else if (float128_is_neg(xb.f128) && !float128_is_zero(xb.f128)) { float_invalid_op_excp(env, POWERPC_EXCP_FP_VXSQRT, 1); - set_snan_bit_is_one(0, &env->fp_status); xt.f128 = float128_default_nan(&env->fp_status); } } diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c index 541ffc2d97..b9f393b7c7 100644 --- a/target/sh4/cpu.c +++ b/target/sh4/cpu.c @@ -71,7 +71,6 @@ static void superh_cpu_reset(CPUState *s) set_flush_to_zero(1, &env->fp_status); #endif set_default_nan_mode(1, &env->fp_status); - set_snan_bit_is_one(1, &env->fp_status); } static void superh_cpu_disas_set_info(CPUState *cpu, disassemble_info *info) diff --git a/target/unicore32/cpu.c b/target/unicore32/cpu.c index 29d160a88d..68f978d80b 100644 --- a/target/unicore32/cpu.c +++ b/target/unicore32/cpu.c @@ -70,7 +70,6 @@ static void unicore_ii_cpu_initfn(Object *obj) set_feature(env, UC32_HWCAP_CMOV); set_feature(env, UC32_HWCAP_UCF64); - set_snan_bit_is_one(1, &env->ucf64.fp_status); } static void uc32_any_cpu_initfn(Object *obj) @@ -83,7 +82,6 @@ static void uc32_any_cpu_initfn(Object *obj) set_feature(env, UC32_HWCAP_CMOV); set_feature(env, UC32_HWCAP_UCF64); - set_snan_bit_is_one(1, &env->ucf64.fp_status); } static void uc32_cpu_realizefn(DeviceState *dev, Error **errp) |