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>

2 files changed, 47 insertions, 0 deletions

diff --git a/include/exec/cpu_ldst_template.h b/include/exec/cpu_ldst_template.h
index 3091c00030..eaf69a1ad4 100644
--- a/include/exec/cpu_ldst_template.h
+++ b/include/exec/cpu_ldst_template.h
@@ -23,6 +23,13 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
+
+#if !defined(SOFTMMU_CODE_ACCESS)
+#include "trace.h"
+#endif
+
+#include "trace/mem.h"
+
 #if DATA_SIZE == 8
 #define SUFFIX q
 #define USUFFIX q
@@ -80,6 +87,12 @@ glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
     int mmu_idx;
     TCGMemOpIdx oi;
 
+#if !defined(SOFTMMU_CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(SHIFT, false, MO_TE, false));
+#endif
+
     addr = ptr;
     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
     mmu_idx = CPU_MMU_INDEX;
@@ -112,6 +125,12 @@ glue(glue(glue(cpu_lds, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
     int mmu_idx;
     TCGMemOpIdx oi;
 
+#if !defined(SOFTMMU_CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(SHIFT, true, MO_TE, false));
+#endif
+
     addr = ptr;
     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
     mmu_idx = CPU_MMU_INDEX;
@@ -148,6 +167,12 @@ glue(glue(glue(cpu_st, SUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
     int mmu_idx;
     TCGMemOpIdx oi;
 
+#if !defined(SOFTMMU_CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(SHIFT, false, MO_TE, true));
+#endif
+
     addr = ptr;
     page_index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
     mmu_idx = CPU_MMU_INDEX;
diff --git a/include/exec/cpu_ldst_useronly_template.h b/include/exec/cpu_ldst_useronly_template.h
index 040b147437..b1378bfae8 100644
--- a/include/exec/cpu_ldst_useronly_template.h
+++ b/include/exec/cpu_ldst_useronly_template.h
@@ -22,6 +22,13 @@
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
+
+#if !defined(CODE_ACCESS)
+#include "trace.h"
+#endif
+
+#include "trace/mem.h"
+
 #if DATA_SIZE == 8
 #define SUFFIX q
 #define USUFFIX q
@@ -53,6 +60,11 @@
 static inline RES_TYPE
 glue(glue(cpu_ld, USUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
 {
+#if !defined(CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(DATA_SIZE, false, MO_TE, false));
+#endif
     return glue(glue(ld, USUFFIX), _p)(g2h(ptr));
 }
 
@@ -68,6 +80,11 @@ glue(glue(glue(cpu_ld, USUFFIX), MEMSUFFIX), _ra)(CPUArchState *env,
 static inline int
 glue(glue(cpu_lds, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr)
 {
+#if !defined(CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(DATA_SIZE, true, MO_TE, false));
+#endif
     return glue(glue(lds, SUFFIX), _p)(g2h(ptr));
 }
 
@@ -85,6 +102,11 @@ static inline void
 glue(glue(cpu_st, SUFFIX), MEMSUFFIX)(CPUArchState *env, target_ulong ptr,
                                       RES_TYPE v)
 {
+#if !defined(CODE_ACCESS)
+    trace_guest_mem_before_exec(
+        ENV_GET_CPU(env), ptr,
+        trace_mem_build_info(DATA_SIZE, false, MO_TE, true));
+#endif
     glue(glue(st, SUFFIX), _p)(g2h(ptr), v);
 }