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-rw-r--r--hw/misc/mos6522.c103
1 files changed, 103 insertions, 0 deletions
diff --git a/hw/misc/mos6522.c b/hw/misc/mos6522.c
index 9c8d4ca6ad..2c20decca1 100644
--- a/hw/misc/mos6522.c
+++ b/hw/misc/mos6522.c
@@ -30,6 +30,9 @@
 #include "hw/misc/mos6522.h"
 #include "hw/qdev-properties.h"
 #include "migration/vmstate.h"
+#include "monitor/monitor.h"
+#include "monitor/hmp.h"
+#include "qapi/type-helpers.h"
 #include "qemu/timer.h"
 #include "qemu/cutils.h"
 #include "qemu/log.h"
@@ -415,6 +418,106 @@ void mos6522_write(void *opaque, hwaddr addr, uint64_t val, unsigned size)
     }
 }
 
+static int qmp_x_query_via_foreach(Object *obj, void *opaque)
+{
+    GString *buf = opaque;
+
+    if (object_dynamic_cast(obj, TYPE_MOS6522)) {
+        MOS6522State *s = MOS6522(obj);
+        int64_t now = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
+        uint16_t t1counter = get_counter(s, &s->timers[0]);
+        uint16_t t2counter = get_counter(s, &s->timers[1]);
+
+        g_string_append_printf(buf, "%s:\n", object_get_typename(obj));
+
+        g_string_append_printf(buf, "  Registers:\n");
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[0], s->b);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[1], s->a);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[2], s->dirb);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[3], s->dira);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[4], t1counter & 0xff);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[5], t1counter >> 8);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[6],
+                               s->timers[0].latch & 0xff);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[7],
+                               s->timers[0].latch >> 8);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[8], t2counter & 0xff);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[9], t2counter >> 8);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[10], s->sr);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[11], s->acr);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[12], s->pcr);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[13], s->ifr);
+        g_string_append_printf(buf, "    %-*s:    0x%x\n", 4,
+                               mos6522_reg_names[14], s->ier);
+
+        g_string_append_printf(buf, "  Timers:\n");
+        g_string_append_printf(buf, "    Using current time now(ns)=%"PRId64
+                                    "\n", now);
+        g_string_append_printf(buf, "    T1 freq(hz)=%"PRId64
+                               " mode=%s"
+                               " counter=0x%x"
+                               " latch=0x%x\n"
+                               "       load_time(ns)=%"PRId64
+                               " next_irq_time(ns)=%"PRId64 "\n",
+                               s->timers[0].frequency,
+                               ((s->acr & T1MODE) == T1MODE_CONT) ? "continuous"
+                                                                  : "one-shot",
+                               t1counter,
+                               s->timers[0].latch,
+                               s->timers[0].load_time,
+                               get_next_irq_time(s, &s->timers[0], now));
+        g_string_append_printf(buf, "    T2 freq(hz)=%"PRId64
+                               " mode=%s"
+                               " counter=0x%x"
+                               " latch=0x%x\n"
+                               "       load_time(ns)=%"PRId64
+                               " next_irq_time(ns)=%"PRId64 "\n",
+                               s->timers[1].frequency,
+                               "one-shot",
+                               t2counter,
+                               s->timers[1].latch,
+                               s->timers[1].load_time,
+                               get_next_irq_time(s, &s->timers[1], now));
+    }
+
+    return 0;
+}
+
+static HumanReadableText *qmp_x_query_via(Error **errp)
+{
+    g_autoptr(GString) buf = g_string_new("");
+
+    object_child_foreach_recursive(object_get_root(),
+                                   qmp_x_query_via_foreach, buf);
+
+    return human_readable_text_from_str(buf);
+}
+
+void hmp_info_via(Monitor *mon, const QDict *qdict)
+{
+    Error *err = NULL;
+    g_autoptr(HumanReadableText) info = qmp_x_query_via(&err);
+
+    if (hmp_handle_error(mon, err)) {
+        return;
+    }
+    monitor_printf(mon, "%s", info->human_readable_text);
+}
+
 static const MemoryRegionOps mos6522_ops = {
     .read = mos6522_read,
     .write = mos6522_write,