yuzu/unicorn
1
0
Fork 0
mirror of https://github.com/yuzu-emu/unicorn.git synced 2024-12-24 01:05:30 +00:00
Code Issues Packages Projects Releases Wiki Activity

target-arm: Implement YIELD insn to yield in ARM and Thumb translators

Browse source 
Implement the YIELD instruction in the ARM and Thumb translators to
actually yield control back to the top level loop rather than being
a simple no-op. (We already do this for A64.)

Backports commit c87e5a61c2b3024116f52f7e68273f864ff7ab82 from qemu
This commit is contained in:
Peter Maydell 2018-02-14 02:05:44 -05:00 committed by Lioncash
parent 8840d8370d
commit 5c7389680e
No known key found for this signature in database
GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
qemu/target-arm/translate.c
View file

@ -4221,6 +4221,10 @@ static void gen_rfe(DisasContext *s, TCGv_i32 pc, TCGv_i32 cpsr)
static void gen_nop_hint(DisasContext *s, int val) static void gen_nop_hint(DisasContext *s, int val)
{ {
switch (val) { switch (val) {
case 1: /* yield */
gen_set_pc_im(s, s->pc);
s->is_jmp = DISAS_YIELD;
break;
case 3: /* wfi */ case 3: /* wfi */
gen_set_pc_im(s, s->pc); gen_set_pc_im(s, s->pc);
s->is_jmp = DISAS_WFI; s->is_jmp = DISAS_WFI;
@ -11699,6 +11703,9 @@ tb_end:
case DISAS_WFE: case DISAS_WFE:
gen_helper_wfe(tcg_ctx, tcg_ctx->cpu_env); gen_helper_wfe(tcg_ctx, tcg_ctx->cpu_env);
break; break;
case DISAS_YIELD:
gen_helper_yield(tcg_ctx, tcg_ctx->cpu_env);
break;
case DISAS_SWI: case DISAS_SWI:
gen_exception(dc, EXCP_SWI, syn_aa32_svc(dc->svc_imm, dc->thumb), gen_exception(dc, EXCP_SWI, syn_aa32_svc(dc->svc_imm, dc->thumb),
default_exception_el(dc)); default_exception_el(dc));