motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 00:03:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

fpu/softfloat: Specialize on snan_bit_is_one

Browse source 
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>
This commit is contained in:
Richard Henderson 2018-05-10 14:48:17 -07:00
parent 5240a30dcc
commit 03385dfdaa
6 changed files with 44 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

1
target/ppc/fpu_helper.c
View file

@ -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);
}
}