From 374e0cd4db321d51ed5fa24498a974085e3f1b6d Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Sat, 13 Sep 2014 09:45:14 -0700 Subject: [PATCH] target-i386: Use cpu_exec_enter/exit qom hooks MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Note that the code that was within the "exit" ifdef block was identical to the cpu_compute_eflags inline, so make that simplification at the same time. Signed-off-by: Richard Henderson Reviewed-by: Alex Bennée Message-id: 1410626734-3804-4-git-send-email-rth@twiddle.net Signed-off-by: Peter Maydell --- cpu-exec.c | 14 ++------------ target-i386/cpu-qom.h | 3 +++ target-i386/cpu.c | 2 ++ target-i386/helper.c | 21 +++++++++++++++++++++ 4 files changed, 28 insertions(+), 12 deletions(-) diff --git a/cpu-exec.c b/cpu-exec.c index 808d34f..0c1f0d3 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -352,13 +352,7 @@ int cpu_exec(CPUArchState *env) cpu->exit_request = 1; } -#if defined(TARGET_I386) - /* put eflags in CPU temporary format */ - CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); - env->df = 1 - (2 * ((env->eflags >> 10) & 1)); - CC_OP = CC_OP_EFLAGS; - env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); -#elif defined(TARGET_M68K) +#if defined(TARGET_M68K) env->cc_op = CC_OP_FLAGS; env->cc_dest = env->sr & 0xf; env->cc_x = (env->sr >> 4) & 1; @@ -811,11 +805,7 @@ int cpu_exec(CPUArchState *env) } /* for(;;) */ -#if defined(TARGET_I386) - /* restore flags in standard format */ - env->eflags = env->eflags | cpu_cc_compute_all(env, CC_OP) - | (env->df & DF_MASK); -#elif defined(TARGET_M68K) +#if defined(TARGET_M68K) cpu_m68k_flush_flags(env, env->cc_op); env->cc_op = CC_OP_FLAGS; env->sr = (env->sr & 0xffe0) diff --git a/target-i386/cpu-qom.h b/target-i386/cpu-qom.h index 7755466..b242cb0 100644 --- a/target-i386/cpu-qom.h +++ b/target-i386/cpu-qom.h @@ -151,4 +151,7 @@ hwaddr x86_cpu_get_phys_page_debug(CPUState *cpu, vaddr addr); int x86_cpu_gdb_read_register(CPUState *cpu, uint8_t *buf, int reg); int x86_cpu_gdb_write_register(CPUState *cpu, uint8_t *buf, int reg); +void x86_cpu_exec_enter(CPUState *cpu); +void x86_cpu_exec_exit(CPUState *cpu); + #endif diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 90d0a05..223e43e 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c @@ -2942,6 +2942,8 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data) #ifndef CONFIG_USER_ONLY cc->debug_excp_handler = breakpoint_handler; #endif + cc->cpu_exec_enter = x86_cpu_exec_enter; + cc->cpu_exec_exit = x86_cpu_exec_exit; } static const TypeInfo x86_cpu_type_info = { diff --git a/target-i386/helper.c b/target-i386/helper.c index 28fefe0..345bda1 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1262,3 +1262,24 @@ void do_cpu_sipi(X86CPU *cpu) { } #endif + +/* Frob eflags into and out of the CPU temporary format. */ + +void x86_cpu_exec_enter(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + CC_SRC = env->eflags & (CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); + env->df = 1 - (2 * ((env->eflags >> 10) & 1)); + CC_OP = CC_OP_EFLAGS; + env->eflags &= ~(DF_MASK | CC_O | CC_S | CC_Z | CC_A | CC_P | CC_C); +} + +void x86_cpu_exec_exit(CPUState *cs) +{ + X86CPU *cpu = X86_CPU(cs); + CPUX86State *env = &cpu->env; + + env->eflags = cpu_compute_eflags(env); +} -- 2.7.4