target/rx: Collect all bytes during disassembly

[thirdparty/qemu.git] / cpus.c

diff --git a/cpus.c b/cpus.c
index 63bda152f5743d4cbb80512b996c89d893aeed9e..ef441bdf622b38cd001b75d4527104fa9cfde060 100644 (file)
--- a/cpus.c
+++ b/cpus.c
@@ -53,7 +53,7 @@
 #include "qemu/bitmap.h"
 #include "qemu/seqlock.h"
 #include "qemu/guest-random.h"
-#include "tcg.h"
+#include "tcg/tcg.h"
 #include "hw/nmi.h"
 #include "sysemu/replay.h"
 #include "sysemu/runstate.h"
@@ -166,78 +166,6 @@ typedef struct TimersState {
 static TimersState timers_state;
 bool mttcg_enabled;
 
-/*
- * We default to false if we know other options have been enabled
- * which are currently incompatible with MTTCG. Otherwise when each
- * guest (target) has been updated to support:
- *   - atomic instructions
- *   - memory ordering primitives (barriers)
- * they can set the appropriate CONFIG flags in ${target}-softmmu.mak
- *
- * Once a guest architecture has been converted to the new primitives
- * there are two remaining limitations to check.
- *
- * - The guest can't be oversized (e.g. 64 bit guest on 32 bit host)
- * - The host must have a stronger memory order than the guest
- *
- * It may be possible in future to support strong guests on weak hosts
- * but that will require tagging all load/stores in a guest with their
- * implicit memory order requirements which would likely slow things
- * down a lot.
- */
-
-static bool check_tcg_memory_orders_compatible(void)
-{
-#if defined(TCG_GUEST_DEFAULT_MO) && defined(TCG_TARGET_DEFAULT_MO)
-    return (TCG_GUEST_DEFAULT_MO & ~TCG_TARGET_DEFAULT_MO) == 0;
-#else
-    return false;
-#endif
-}
-
-static bool default_mttcg_enabled(void)
-{
-    if (use_icount || TCG_OVERSIZED_GUEST) {
-        return false;
-    } else {
-#ifdef TARGET_SUPPORTS_MTTCG
-        return check_tcg_memory_orders_compatible();
-#else
-        return false;
-#endif
-    }
-}
-
-void qemu_tcg_configure(QemuOpts *opts, Error **errp)
-{
-    const char *t = qemu_opt_get(opts, "thread");
-    if (t) {
-        if (strcmp(t, "multi") == 0) {
-            if (TCG_OVERSIZED_GUEST) {
-                error_setg(errp, "No MTTCG when guest word size > hosts");
-            } else if (use_icount) {
-                error_setg(errp, "No MTTCG when icount is enabled");
-            } else {
-#ifndef TARGET_SUPPORTS_MTTCG
-                warn_report("Guest not yet converted to MTTCG - "
-                            "you may get unexpected results");
-#endif
-                if (!check_tcg_memory_orders_compatible()) {
-                    warn_report("Guest expects a stronger memory ordering "
-                                "than the host provides");
-                    error_printf("This may cause strange/hard to debug errors\n");
-                }
-                mttcg_enabled = true;
-            }
-        } else if (strcmp(t, "single") == 0) {
-            mttcg_enabled = false;
-        } else {
-            error_setg(errp, "Invalid 'thread' setting %s", t);
-        }
-    } else {
-        mttcg_enabled = default_mttcg_enabled();
-    }
-}
 
 /* The current number of executed instructions is based on what we
  * originally budgeted minus the current state of the decrementing
@@ -1098,9 +1026,9 @@ static int do_vm_stop(RunState state, bool send_stop)
     int ret = 0;
 
     if (runstate_is_running()) {
+        runstate_set(state);
         cpu_disable_ticks();
         pause_all_vcpus();
-        runstate_set(state);
         vm_state_notify(0, state);
         if (send_stop) {
             qapi_event_send_stop();
@@ -1388,6 +1316,10 @@ static int64_t tcg_get_icount_limit(void)
          */
         deadline = qemu_clock_deadline_ns_all(QEMU_CLOCK_VIRTUAL,
                                               QEMU_TIMER_ATTR_ALL);
+        /* Check realtime timers, because they help with input processing */
+        deadline = qemu_soonest_timeout(deadline,
+                qemu_clock_deadline_ns_all(QEMU_CLOCK_REALTIME,
+                                           QEMU_TIMER_ATTR_ALL));
 
         /* Maintain prior (possibly buggy) behaviour where if no deadline
          * was set (as there is no QEMU_CLOCK_VIRTUAL timer) or it is more than
@@ -1907,6 +1839,11 @@ void qemu_mutex_unlock_iothread(void)
     qemu_mutex_unlock(&qemu_global_mutex);
 }
 
+void qemu_cond_wait_iothread(QemuCond *cond)
+{
+    qemu_cond_wait(cond, &qemu_global_mutex);
+}
+
 static bool all_vcpus_paused(void)
 {
     CPUState *cpu;
@@ -1962,6 +1899,10 @@ void resume_all_vcpus(void)
 {
     CPUState *cpu;
 
+    if (!runstate_is_running()) {
+        return;
+    }
+
     qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true);
     CPU_FOREACH(cpu) {
         cpu_resume(cpu);