From 4552a09dd4055c806b7df8c595dc0fb8951834be Mon Sep 17 00:00:00 2001 From: Peter Maydell Date: Mon, 11 Jan 2016 12:40:24 +0000 Subject: [PATCH] target-sparc: Split cpu_put_psr into side-effect and no-side-effect parts For inbound migration we really want to be able to set the PSR without having any side effects, but cpu_put_psr() calls cpu_check_irqs() which might try to deliver CPU interrupts. Split cpu_put_psr() into the no-side-effect and side-effect parts. This includes reordering the cpu_check_irqs() to the end of cpu_put_psr(), because that function may actually end up calling cpu_interrupt(), which does not seem like a good thing to happen in the middle of updating the PSR. Suggested-by: Blue Swirl Signed-off-by: Peter Maydell Signed-off-by: Mark Cave-Ayland --- target-sparc/cpu.h | 1 + target-sparc/win_helper.c | 19 ++++++++++++------- 2 files changed, 13 insertions(+), 7 deletions(-) diff --git a/target-sparc/cpu.h b/target-sparc/cpu.h index 4aa689ed0b..d9635079e1 100644 --- a/target-sparc/cpu.h +++ b/target-sparc/cpu.h @@ -539,6 +539,7 @@ int cpu_sparc_exec(CPUState *cpu); /* win_helper.c */ target_ulong cpu_get_psr(CPUSPARCState *env1); void cpu_put_psr(CPUSPARCState *env1, target_ulong val); +void cpu_put_psr_raw(CPUSPARCState *env1, target_ulong val); #ifdef TARGET_SPARC64 target_ulong cpu_get_ccr(CPUSPARCState *env1); void cpu_put_ccr(CPUSPARCState *env1, target_ulong val); diff --git a/target-sparc/win_helper.c b/target-sparc/win_helper.c index f01ae08f6c..5b6d7b5ae3 100644 --- a/target-sparc/win_helper.c +++ b/target-sparc/win_helper.c @@ -64,23 +64,28 @@ target_ulong cpu_get_psr(CPUSPARCState *env) #endif } -void cpu_put_psr(CPUSPARCState *env, target_ulong val) +void cpu_put_psr_raw(CPUSPARCState *env, target_ulong val) { env->psr = val & PSR_ICC; #if !defined(TARGET_SPARC64) env->psref = (val & PSR_EF) ? 1 : 0; env->psrpil = (val & PSR_PIL) >> 8; -#endif -#if ((!defined(TARGET_SPARC64)) && !defined(CONFIG_USER_ONLY)) - cpu_check_irqs(env); -#endif -#if !defined(TARGET_SPARC64) env->psrs = (val & PSR_S) ? 1 : 0; env->psrps = (val & PSR_PS) ? 1 : 0; env->psret = (val & PSR_ET) ? 1 : 0; - cpu_set_cwp(env, val & PSR_CWP); #endif env->cc_op = CC_OP_FLAGS; +#if !defined(TARGET_SPARC64) + cpu_set_cwp(env, val & PSR_CWP); +#endif +} + +void cpu_put_psr(CPUSPARCState *env, target_ulong val) +{ + cpu_put_psr_raw(env, val); +#if ((!defined(TARGET_SPARC64)) && !defined(CONFIG_USER_ONLY)) + cpu_check_irqs(env); +#endif } int cpu_cwp_inc(CPUSPARCState *env, int cwp)