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authorAndreas Färber <afaerber@suse.de>2013-07-02 17:43:21 +0200
committerAndreas Färber <afaerber@suse.de>2013-10-07 11:48:39 +0200
commit30ba0ee52d1519b717089782ef1caf0480a01dc3 (patch)
tree2007245f902dc0dfba178f55cc9f0a0288fddfc3 /linux-user
parent812586405c5d165aae791d3806a9bbb8312ec2ac (diff)
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cpu: Move cpu_copy() into linux-user
It is only used there and is deemed very fragile if not incorrect in its current memcpy() form. Moving it into linux-user will allow to move parts into target_cpu.h headers and only copy what the ABI mandates. Signed-off-by: Andreas Färber <afaerber@suse.de>
Diffstat (limited to 'linux-user')
-rw-r--r--linux-user/main.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/linux-user/main.c b/linux-user/main.c
index 1561950..5fe587b 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -3285,6 +3285,37 @@ void init_task_state(TaskState *ts)
ts->sigqueue_table[i].next = NULL;
}
+CPUArchState *cpu_copy(CPUArchState *env)
+{
+ CPUArchState *new_env = cpu_init(env->cpu_model_str);
+#if defined(TARGET_HAS_ICE)
+ CPUBreakpoint *bp;
+ CPUWatchpoint *wp;
+#endif
+
+ /* Reset non arch specific state */
+ cpu_reset(ENV_GET_CPU(new_env));
+
+ memcpy(new_env, env, sizeof(CPUArchState));
+
+ /* Clone all break/watchpoints.
+ Note: Once we support ptrace with hw-debug register access, make sure
+ BP_CPU break/watchpoints are handled correctly on clone. */
+ QTAILQ_INIT(&env->breakpoints);
+ QTAILQ_INIT(&env->watchpoints);
+#if defined(TARGET_HAS_ICE)
+ QTAILQ_FOREACH(bp, &env->breakpoints, entry) {
+ cpu_breakpoint_insert(new_env, bp->pc, bp->flags, NULL);
+ }
+ QTAILQ_FOREACH(wp, &env->watchpoints, entry) {
+ cpu_watchpoint_insert(new_env, wp->vaddr, (~wp->len_mask) + 1,
+ wp->flags, NULL);
+ }
+#endif
+
+ return new_env;
+}
+
static void handle_arg_help(const char *arg)
{
usage();