summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorAlexander Graf <agraf@suse.de>2009-12-05 12:44:21 +0100
committerAurelien Jarno <aurelien@aurel32.net>2009-12-05 17:36:00 +0100
commit10ec51174ca69a4c3c5149b0b3baaa6ccba66273 (patch)
treee9493c891b159a758da195484e2cdba57bbf6981 /target-s390x/helper.c
parentSparc64: handle MMU global bit and nucleus context (diff)
downloadqemu-kvm-10ec51174ca69a4c3c5149b0b3baaa6ccba66273.tar.gz
qemu-kvm-10ec51174ca69a4c3c5149b0b3baaa6ccba66273.tar.bz2
qemu-kvm-10ec51174ca69a4c3c5149b0b3baaa6ccba66273.zip
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 <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'target-s390x/helper.c')
-rw-r--r--target-s390x/helper.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/target-s390x/helper.c b/target-s390x/helper.c
new file mode 100644
index 000000000..4a198ae32
--- /dev/null
+++ b/target-s390x/helper.c
@@ -0,0 +1,62 @@
+/*
+ * S/390 helpers
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "cpu.h"
+#include "exec-all.h"
+#include "gdbstub.h"
+#include "qemu-common.h"
+
+CPUS390XState *cpu_s390x_init(const char *cpu_model)
+{
+ CPUS390XState *env;
+ static int inited = 0;
+
+ env = qemu_mallocz(sizeof(CPUS390XState));
+ cpu_exec_init(env);
+ if (!inited) {
+ inited = 1;
+ }
+
+ env->cpu_model_str = cpu_model;
+ cpu_reset(env);
+ qemu_init_vcpu(env);
+ return env;
+}
+
+target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr)
+{
+ return addr;
+}
+
+void cpu_reset(CPUS390XState *env)
+{
+ if (qemu_loglevel_mask(CPU_LOG_RESET)) {
+ qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
+ log_cpu_state(env, 0);
+ }
+
+ memset(env, 0, offsetof(CPUS390XState, breakpoints));
+ /* FIXME: reset vector? */
+ tlb_flush(env, 1);
+}