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target/sparc: Split ver from env->fsr

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This field is read-only.  It is easier to store it separately
and merge it only upon read.

While we're at it, use FSR_VER_SHIFT to initialize fpu_version.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20231103173841.33651-17-richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-11-03 10:38:35 -07:00
parent 1ccd6e13cc
commit 49bb972513
3 changed files with 23 additions and 16 deletions
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9
target/sparc/fop_helper.c
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@ -349,7 +349,12 @@ GEN_FCMP(fcmpeq_fcc3, float128, 26, 1);
target_ulong cpu_get_fsr(CPUSPARCState *env)
{
return env->fsr;
target_ulong fsr = env->fsr;
/* VER is kept completely separate until re-assembly. */
fsr |= env->def.fpu_version;
return fsr;
}
target_ulong helper_get_fsr(CPUSPARCState *env)
@ -361,7 +366,7 @@ static void set_fsr_nonsplit(CPUSPARCState *env, target_ulong fsr)
{
int rnd_mode;
env->fsr = fsr;
env->fsr = fsr & ~FSR_VER_MASK;
switch (fsr & FSR_RD_MASK) {
case FSR_RD_NEAREST: