1 files changed, 183 insertions, 0 deletions
diff --git a/runtime/jdwp/jdwp_request.cc b/runtime/jdwp/jdwp_request.cc
new file mode 100644
index 0000000000..440b51b6e3
--- /dev/null
+++ b/runtime/jdwp/jdwp_request.cc
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "jdwp/jdwp.h"
+
+#include "base/stringprintf.h"
+#include "jdwp/jdwp_priv.h"
+
+namespace art {
+
+namespace JDWP {
+
+Request::Request(const uint8_t* bytes, uint32_t available) : p_(bytes) {
+  byte_count_ = Read4BE();
+  end_ =  bytes + byte_count_;
+  CHECK_LE(byte_count_, available);
+
+  id_ = Read4BE();
+  int8_t flags = Read1();
+  if ((flags & kJDWPFlagReply) != 0) {
+    LOG(FATAL) << "reply?!";
+  }
+
+  command_set_ = Read1();
+  command_ = Read1();
+}
+
+Request::~Request() {
+}
+
+void Request::CheckConsumed() {
+  if (p_ < end_) {
+    CHECK(p_ == end_) << "read too few bytes: " << (end_ - p_);
+  } else if (p_ > end_) {
+    CHECK(p_ == end_) << "read too many bytes: " << (p_ - end_);
+  }
+}
+
+std::string Request::ReadUtf8String() {
+  uint32_t length = Read4BE();
+  std::string s;
+  s.resize(length);
+  memcpy(&s[0], p_, length);
+  p_ += length;
+  VLOG(jdwp) << "    string \"" << s << "\"";
+  return s;
+}
+
+// Helper function: read a variable-width value from the input buffer.
+uint64_t Request::ReadValue(size_t width) {
+  uint64_t value = -1;
+  switch (width) {
+    case 1: value = Read1(); break;
+    case 2: value = Read2BE(); break;
+    case 4: value = Read4BE(); break;
+    case 8: value = Read8BE(); break;
+    default: LOG(FATAL) << width; break;
+  }
+  return value;
+}
+
+int32_t Request::ReadSigned32(const char* what) {
+  int32_t value = static_cast<int32_t>(Read4BE());
+  VLOG(jdwp) << "    " << what << " " << value;
+  return value;
+}
+
+uint32_t Request::ReadUnsigned32(const char* what) {
+  uint32_t value = Read4BE();
+  VLOG(jdwp) << "    " << what << " " << value;
+  return value;
+}
+
+FieldId Request::ReadFieldId() {
+  FieldId id = Read4BE();
+  VLOG(jdwp) << "    field id " << DescribeField(id);
+  return id;
+}
+
+MethodId Request::ReadMethodId() {
+  MethodId id = Read4BE();
+  VLOG(jdwp) << "    method id " << DescribeMethod(id);
+  return id;
+}
+
+ObjectId Request::ReadObjectId(const char* specific_kind) {
+  ObjectId id = Read8BE();
+  VLOG(jdwp) << StringPrintf("    %s id %#llx", specific_kind, id);
+  return id;
+}
+
+ObjectId Request::ReadArrayId() {
+  return ReadObjectId("array");
+}
+
+ObjectId Request::ReadObjectId() {
+  return ReadObjectId("object");
+}
+
+ObjectId Request::ReadThreadId() {
+  return ReadObjectId("thread");
+}
+
+ObjectId Request::ReadThreadGroupId() {
+  return ReadObjectId("thread group");
+}
+
+RefTypeId Request::ReadRefTypeId() {
+  RefTypeId id = Read8BE();
+  VLOG(jdwp) << "    ref type id " << DescribeRefTypeId(id);
+  return id;
+}
+
+FrameId Request::ReadFrameId() {
+  FrameId id = Read8BE();
+  VLOG(jdwp) << "    frame id " << id;
+  return id;
+}
+
+JdwpTag Request::ReadTag() {
+  return ReadEnum1<JdwpTag>("tag");
+}
+
+JdwpTypeTag Request::ReadTypeTag() {
+  return ReadEnum1<JdwpTypeTag>("type tag");
+}
+
+JdwpLocation Request::ReadLocation() {
+  JdwpLocation location;
+  memset(&location, 0, sizeof(location)); // Allows memcmp(3) later.
+  location.type_tag = ReadTypeTag();
+  location.class_id = ReadObjectId("class");
+  location.method_id = ReadMethodId();
+  location.dex_pc = Read8BE();
+  VLOG(jdwp) << "    location " << location;
+  return location;
+}
+
+JdwpModKind Request::ReadModKind() {
+  return ReadEnum1<JdwpModKind>("mod kind");
+}
+
+uint8_t Request::Read1() {
+  return *p_++;
+}
+
+uint16_t Request::Read2BE() {
+  uint16_t result = p_[0] << 8 | p_[1];
+  p_ += 2;
+  return result;
+}
+
+uint32_t Request::Read4BE() {
+  uint32_t result = p_[0] << 24;
+  result |= p_[1] << 16;
+  result |= p_[2] << 8;
+  result |= p_[3];
+  p_ += 4;
+  return result;
+}
+
+uint64_t Request::Read8BE() {
+  uint64_t high = Read4BE();
+  uint64_t low = Read4BE();
+  return (high << 32) | low;
+}
+
+}  // namespace JDWP
+
+}  // namespace art