diff options
| author | Rob Herring <rob.herring@linaro.org> | 2014-05-01 15:24:45 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-05-01 15:24:45 +0100 |
| commit | 252ec4057685cd9bf6a13f96528c843754af8fad (patch) | |
| tree | b7e0aae19d7bc38b2e316fe02ad2ca4146b4c45d /target-arm/translate-a64.c | |
| parent | e3da9921ebc554fad3224a9fdda9a7425ffd9ef7 (diff) | |
target-arm: implement WFE/YIELD as a yield for AArch64
Like was done for AArch32 for WFE, implement both WFE and YIELD as a
yield operation. This speeds up multi-core system emulation.
Signed-off-by: Rob Herring <rob.herring@linaro.org>
Message-id: 1397588401-20366-1-git-send-email-robherring2@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-arm/translate-a64.c')
| -rw-r--r-- | target-arm/translate-a64.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index d86b8ffa55..e31e069041 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -1151,6 +1151,8 @@ static void handle_hint(DisasContext *s, uint32_t insn, return; case 1: /* YIELD */ case 2: /* WFE */ + s->is_jmp = DISAS_WFE; + return; case 4: /* SEV */ case 5: /* SEVL */ /* we treat all as NOP at least for now */ @@ -10765,6 +10767,10 @@ void gen_intermediate_code_internal_a64(ARMCPU *cpu, case DISAS_EXC: case DISAS_SWI: break; + case DISAS_WFE: + gen_a64_set_pc_im(dc->pc); + gen_helper_wfe(cpu_env); + break; case DISAS_WFI: /* This is a special case because we don't want to just halt the CPU * if trying to debug across a WFI. |