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 .
*/
+
+#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 .
*/
+
+#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);
}
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 54c02777c5..569cdc642e 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 @@ static void gen_ldst_i64(TCGOpcode opc, TCGv_i64 val, TCGv addr,
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 @@ void tcg_gen_qemu_ld_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)
}
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 @@ void tcg_gen_qemu_st_i64(TCGv_i64 val, TCGv addr, TCGArg idx, TCGMemOp memop)
}
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);
}
diff --git a/trace-events b/trace-events
index da0d06025d..90edb982f5 100644
--- a/trace-events
+++ b/trace-events
@@ -2206,3 +2206,24 @@ gicv3_redist_write(uint32_t cpu, uint64_t offset, uint64_t data, unsigned size,
gicv3_redist_badwrite(uint32_t cpu, uint64_t offset, uint64_t data, unsigned size, bool secure) "GICv3 redistributor %x write: offset 0x%" PRIx64 " data 0x%" PRIx64 " size %u secure %d: error"
gicv3_redist_set_irq(uint32_t cpu, int irq, int level) "GICv3 redistributor %x interrupt %d level changed to %d"
gicv3_redist_send_sgi(uint32_t cpu, int irq) "GICv3 redistributor %x pending SGI %d"
+
+### Guest events, keep at bottom
+
+# @vaddr: Access' virtual address.
+# @info : Access' information (see below).
+#
+# Start virtual memory access (before any potential access violation).
+#
+# Does not include memory accesses performed by devices.
+#
+# Access information can be parsed as:
+#
+# struct mem_info {
+# uint8_t size_shift : 2; /* interpreted as "1 << size_shift" bytes */
+# bool sign_extend: 1; /* sign-extended */
+# uint8_t endianness : 1; /* 0: little, 1: big */
+# bool store : 1; /* wheter it's a store operation */
+# };
+#
+# Targets: TCG(all)
+disable vcpu tcg guest_mem_before(TCGv vaddr, uint8_t info) "info=%d", "vaddr=0x%016"PRIx64" info=%d"
diff --git a/trace/mem-internal.h b/trace/mem-internal.h
new file mode 100644
index 0000000000..a75e0ff732
--- /dev/null
+++ b/trace/mem-internal.h
@@ -0,0 +1,46 @@
+/*
+ * Helper functions for guest memory tracing
+ *
+ * Copyright (C) 2016 Lluís Vilanova
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef TRACE__MEM_INTERNAL_H
+#define TRACE__MEM_INTERNAL_H
+
+static inline uint8_t trace_mem_get_info(TCGMemOp op, bool store)
+{
+ uint8_t res = op;
+ bool be = (op & MO_BSWAP) == MO_BE;
+
+ /* remove untraced fields */
+ res &= (1ULL << 4) - 1;
+ /* make endianness absolute */
+ res &= ~MO_BSWAP;
+ if (be) {
+ res |= 1ULL << 3;
+ }
+ /* add fields */
+ if (store) {
+ res |= 1ULL << 4;
+ }
+
+ return res;
+}
+
+static inline uint8_t trace_mem_build_info(
+ TCGMemOp size, bool sign_extend, TCGMemOp endianness, bool store)
+{
+ uint8_t res = 0;
+ res |= size;
+ res |= (sign_extend << 2);
+ if (endianness == MO_BE) {
+ res |= (1ULL << 3);
+ }
+ res |= (store << 4);
+ return res;
+}
+
+#endif /* TRACE__MEM_INTERNAL_H */
diff --git a/trace/mem.h b/trace/mem.h
new file mode 100644
index 0000000000..c76a572689
--- /dev/null
+++ b/trace/mem.h
@@ -0,0 +1,34 @@
+/*
+ * Helper functions for guest memory tracing
+ *
+ * Copyright (C) 2016 Lluís Vilanova
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#ifndef TRACE__MEM_H
+#define TRACE__MEM_H
+
+#include "tcg/tcg.h"
+
+
+/**
+ * trace_mem_get_info:
+ *
+ * Return a value for the 'info' argument in guest memory access traces.
+ */
+static uint8_t trace_mem_get_info(TCGMemOp op, bool store);
+
+/**
+ * trace_mem_build_info:
+ *
+ * Return a value for the 'info' argument in guest memory access traces.
+ */
+static uint8_t trace_mem_build_info(TCGMemOp size, bool sign_extend,
+ TCGMemOp endianness, bool store);
+
+
+#include "trace/mem-internal.h"
+
+#endif /* TRACE__MEM_H */