Add support for tracing Java method entry/exit to qemu.

This is part of a larger change to add support for tracing Java methods.
There is also a kernel change and a small change to the Dalvik interpreter
that will be checked in separately.
There used to be support for tracing Java methods but it relied on trapping
every store and checking if the store address matched a special "magic"
region (and that stopped working because we can no longer trap on loads
and stores).  The new approach uses a memory-mapped page to catch stores to
just that page.

1 files changed, 6 insertions, 1 deletions

diff --git a/hw/goldfish_trace.h b/hw/goldfish_trace.h
index 44190ee..c49745b 100644
--- a/hw/goldfish_trace.h
+++ b/hw/goldfish_trace.h
@@ -12,6 +12,8 @@
 #ifndef _TRACE_DEV_H_
 #define _TRACE_DEV_H_
 
+#include "goldfish_device.h"
+
 #define CLIENT_PAGE_SIZE        4096
 
 /* trace device registers */
@@ -41,10 +43,13 @@
 #define TRACE_DEV_REG_PRINT_NUM_HEX     62
 #define TRACE_DEV_REG_STOP_EMU          90
 #define TRACE_DEV_REG_ENABLE            100
+#define TRACE_DEV_REG_METHOD_ENTRY      1024
+#define TRACE_DEV_REG_METHOD_EXIT       1025
+#define TRACE_DEV_REG_METHOD_EXCEPTION  1026
 
 /* the virtual trace device state */
 typedef struct {
-    uint32_t base;
+    struct goldfish_device dev;
 } trace_dev_state;
 
 /*