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target/arm: check CF_PARALLEL instead of parallel_cpus

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Thereby decoupling the resulting translated code from the current state
of the system.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Emilio G. Cota 2017-07-14 18:20:49 -04:00 • committed by Richard Henderson
parent c5a49c63fa
commit 2399d4e7ce
5 changed files with 68 additions and 21 deletions
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9
target/arm/translate.c
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@ -4546,8 +4546,13 @@ static void gen_exception_return(DisasContext *s, TCGv_i32 pc)
static void gen_nop_hint(DisasContext *s, int val)
{
switch (val) {
/* When running in MTTCG we don't generate jumps to the yield and
* WFE helpers as it won't affect the scheduling of other vCPUs.
* If we wanted to more completely model WFE/SEV so we don't busy
* spin unnecessarily we would need to do something more involved.
*/
case 1: /* yield */
if (!parallel_cpus) {
if (!(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_set_pc_im(s, s->pc);
s->base.is_jmp = DISAS_YIELD;
}
@ -4557,7 +4562,7 @@ static void gen_nop_hint(DisasContext *s, int val)
s->base.is_jmp = DISAS_WFI;
break;
case 2: /* wfe */
if (!parallel_cpus) {
if (!(tb_cflags(s->base.tb) & CF_PARALLEL)) {
gen_set_pc_im(s, s->pc);
s->base.is_jmp = DISAS_WFE;
}