motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-05 16:53:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

target/ppc: Add helper for fsqrts

Browse source 
Use float64r32_sqrt.  Fixes a double-rounding issue with performing
the compuation in float64 and then rounding afterward.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20211119160502.17432-30-richard.henderson@linaro.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Richard Henderson 2021-12-17 17:57:16 +01:00 • committed by Cédric Le Goater
parent d04ca895dc
commit 41ae890d08
3 changed files with 14 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

12
target/ppc/fpu_helper.c
View file

@ -775,6 +775,18 @@ float64 helper_fsqrt(CPUPPCState *env, float64 arg)
return ret;
}
/* fsqrts - fsqrts. */
float64 helper_fsqrts(CPUPPCState *env, float64 arg)
{
float64 ret = float64r32_sqrt(arg, &env->fp_status);
int flags = get_float_exception_flags(&env->fp_status);
if (unlikely(flags & float_flag_invalid)) {
float_invalid_op_sqrt(env, flags, 1, GETPC());
}
return ret;
}
/* fre - fre. */
float64 helper_fre(CPUPPCState *env, float64 arg)
{