From 10ec51174ca69a4c3c5149b0b3baaa6ccba66273 Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Sat, 5 Dec 2009 12:44:21 +0100 Subject: S/390 CPU fake emulation Because Qemu currently requires a TCG target to exist and there are quite some useful helpers here to lay the groundwork for out KVM target, let's create a stub TCG emulation target for S390X CPUs. This is required to make tcg happy. The emulation target itself won't work though. Signed-off-by: Alexander Graf Signed-off-by: Aurelien Jarno --- target-s390x/exec.h | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 target-s390x/exec.h (limited to 'target-s390x/exec.h') diff --git a/target-s390x/exec.h b/target-s390x/exec.h new file mode 100644 index 0000000000..5198359804 --- /dev/null +++ b/target-s390x/exec.h @@ -0,0 +1,51 @@ +/* + * S/390 execution defines + * + * Copyright (c) 2009 Ulrich Hecht + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA + */ + +#include "dyngen-exec.h" + +register struct CPUS390XState *env asm(AREG0); + +#include "cpu.h" +#include "exec-all.h" + +static inline int cpu_has_work(CPUState *env) +{ + return env->interrupt_request & CPU_INTERRUPT_HARD; // guess +} + +static inline void regs_to_env(void) +{ +} + +static inline void env_to_regs(void) +{ +} + +static inline int cpu_halted(CPUState *env) +{ + if (!env->halted) { + return 0; + } + if (cpu_has_work(env)) { + env->halted = 0; + return 0; + } + return EXCP_HALTED; +} -- cgit v1.2.1