memory: add tracepoints for MMIO reads/writes

This is quite handy to debug softmmu targets.

Reviewed-by: Andreas Faerber <afaerber@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1375016242-32651-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/memory.c b/memory.c
index 1494e955d4..ac6f3c6a19 100644
--- a/memory.c
+++ b/memory.c
@@ -19,6 +19,7 @@
 #include "qemu/bitops.h"
 #include "qom/object.h"
 #include "sysemu/kvm.h"
+#include "trace.h"
 #include <assert.h>
 
 #include "exec/memory-internal.h"
@@ -388,6 +389,7 @@ static void memory_region_oldmmio_read_accessor(MemoryRegion *mr,
     uint64_t tmp;
 
     tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
+    trace_memory_region_ops_read(mr, addr, tmp, size);
     *value |= (tmp & mask) << shift;
 }
 
@@ -404,6 +406,7 @@ static void memory_region_read_accessor(MemoryRegion *mr,
         qemu_flush_coalesced_mmio_buffer();
     }
     tmp = mr->ops->read(mr->opaque, addr, size);
+    trace_memory_region_ops_read(mr, addr, tmp, size);
     *value |= (tmp & mask) << shift;
 }
 
@@ -417,6 +420,7 @@ static void memory_region_oldmmio_write_accessor(MemoryRegion *mr,
     uint64_t tmp;
 
     tmp = (*value >> shift) & mask;
+    trace_memory_region_ops_write(mr, addr, tmp, size);
     mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
 }
 
@@ -433,6 +437,7 @@ static void memory_region_write_accessor(MemoryRegion *mr,
         qemu_flush_coalesced_mmio_buffer();
     }
     tmp = (*value >> shift) & mask;
+    trace_memory_region_ops_write(mr, addr, tmp, size);
     mr->ops->write(mr->opaque, addr, tmp, size);
 }