commit dcdaadb6ea873159487aa2fdbee2c4aa7779e02d
author Lluís Vilanova <vilanova@ac.upc.edu> Thu Jun 09 19:31:47 2016 +0200
committer Stefan Hajnoczi <stefanha@redhat.com> Mon Jun 20 17:21:56 2016 +0100
tree 767536fb99ccab715bbd47af0587c1e356a9621a
parent 7c2550432abe62f53e6df878ceba6ceaf71f0e7e

trace: [all] Add "guest_mem_before" event

The event is described in "trace-events". Note that the "MO_AMASK" flag
is not traced, since it does not seem to affect the visible semantics of
instructions.

[s/inline inline/inline/ to fix clang build.
--Stefan]

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 146549350711.18437.726780393247474362.stgit@fimbulvetr.bsc.es
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

tcg/tcg-op.c

diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 54c0277..569cdc6 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -28,6 +28,8 @@
 #include "exec/exec-all.h"
 #include "tcg.h"
 #include "tcg-op.h"
+#include "trace-tcg.h"
+#include "trace/mem.h"
 
 /* Reduce the number of ifdefs below.  This assumes that all uses of
    TCGV_HIGH and TCGV_LOW are properly protected by a conditional that
@@ -1910,12 +1912,16 @@
 void tcg_gen_qemu_ld_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)
 {
     memop = tcg_canonicalize_memop(memop, 0, 0);
+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
+                               addr, trace_mem_get_info(memop, 0));
     gen_ldst_i32(INDEX_op_qemu_ld_i32, val, addr, memop, idx);
 }
 
 void tcg_gen_qemu_st_i32(TCGv_i32 val, TCGv addr, TCGArg idx, TCGMemOp memop)
 {
     memop = tcg_canonicalize_memop(memop, 0, 1);
+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
+                               addr, trace_mem_get_info(memop, 1));
     gen_ldst_i32(INDEX_op_qemu_st_i32, val, addr, memop, idx);
 }
 
@@ -1932,6 +1938,8 @@
     }
 
     memop = tcg_canonicalize_memop(memop, 1, 0);
+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
+                               addr, trace_mem_get_info(memop, 0));
     gen_ldst_i64(INDEX_op_qemu_ld_i64, val, addr, memop, idx);
 }
 
@@ -1943,5 +1951,7 @@
     }
 
     memop = tcg_canonicalize_memop(memop, 1, 1);
+    trace_guest_mem_before_tcg(tcg_ctx.cpu, tcg_ctx.tcg_env,
+                               addr, trace_mem_get_info(memop, 1));
     gen_ldst_i64(INDEX_op_qemu_st_i64, val, addr, memop, idx);
 }