Move JIT debugger interface code to its own file.
Change-Id: Ie788daa8caf60f2f0f93484681a8a9fcce61c23f
diff --git a/runtime/Android.mk b/runtime/Android.mk
index 4096117..07fa2fd 100644
--- a/runtime/Android.mk
+++ b/runtime/Android.mk
@@ -102,6 +102,7 @@
jdwp/jdwp_socket.cc \
jdwp/object_registry.cc \
jni_env_ext.cc \
+ jit/debugger_interface.cc \
jit/jit.cc \
jit/jit_code_cache.cc \
jit/jit_instrumentation.cc \
diff --git a/runtime/elf_file.cc b/runtime/elf_file.cc
index 2819670..57d623e 100644
--- a/runtime/elf_file.cc
+++ b/runtime/elf_file.cc
@@ -27,89 +27,12 @@
#include "base/unix_file/fd_file.h"
#include "elf_file_impl.h"
#include "elf_utils.h"
+#include "jit/debugger_interface.h"
#include "leb128.h"
#include "utils.h"
namespace art {
-// -------------------------------------------------------------------
-// Binary GDB JIT Interface as described in
-// http://sourceware.org/gdb/onlinedocs/gdb/Declarations.html
-extern "C" {
- typedef enum {
- JIT_NOACTION = 0,
- JIT_REGISTER_FN,
- JIT_UNREGISTER_FN
- } JITAction;
-
- struct JITCodeEntry {
- JITCodeEntry* next_;
- JITCodeEntry* prev_;
- const uint8_t *symfile_addr_;
- uint64_t symfile_size_;
- };
-
- struct JITDescriptor {
- uint32_t version_;
- uint32_t action_flag_;
- JITCodeEntry* relevant_entry_;
- JITCodeEntry* first_entry_;
- };
-
- // GDB will place breakpoint into this function.
- // To prevent GCC from inlining or removing it we place noinline attribute
- // and inline assembler statement inside.
- void __attribute__((noinline)) __jit_debug_register_code();
- void __attribute__((noinline)) __jit_debug_register_code() {
- __asm__("");
- }
-
- // GDB will inspect contents of this descriptor.
- // Static initialization is necessary to prevent GDB from seeing
- // uninitialized descriptor.
- JITDescriptor __jit_debug_descriptor = { 1, JIT_NOACTION, nullptr, nullptr };
-}
-
-
-static JITCodeEntry* CreateCodeEntry(const uint8_t *symfile_addr,
- uintptr_t symfile_size) {
- JITCodeEntry* entry = new JITCodeEntry;
- entry->symfile_addr_ = symfile_addr;
- entry->symfile_size_ = symfile_size;
- entry->prev_ = nullptr;
-
- // TODO: Do we need a lock here?
- entry->next_ = __jit_debug_descriptor.first_entry_;
- if (entry->next_ != nullptr) {
- entry->next_->prev_ = entry;
- }
- __jit_debug_descriptor.first_entry_ = entry;
- __jit_debug_descriptor.relevant_entry_ = entry;
-
- __jit_debug_descriptor.action_flag_ = JIT_REGISTER_FN;
- __jit_debug_register_code();
- return entry;
-}
-
-
-static void UnregisterCodeEntry(JITCodeEntry* entry) {
- // TODO: Do we need a lock here?
- if (entry->prev_ != nullptr) {
- entry->prev_->next_ = entry->next_;
- } else {
- __jit_debug_descriptor.first_entry_ = entry->next_;
- }
-
- if (entry->next_ != nullptr) {
- entry->next_->prev_ = entry->prev_;
- }
-
- __jit_debug_descriptor.relevant_entry_ = entry;
- __jit_debug_descriptor.action_flag_ = JIT_UNREGISTER_FN;
- __jit_debug_register_code();
- delete entry;
-}
-
template <typename ElfTypes>
ElfFileImpl<ElfTypes>::ElfFileImpl(File* file, bool writable,
bool program_header_only,
@@ -352,7 +275,7 @@
delete dynsym_symbol_table_;
delete jit_elf_image_;
if (jit_gdb_entry_) {
- UnregisterCodeEntry(jit_gdb_entry_);
+ DeleteJITCodeEntry(jit_gdb_entry_);
}
}
@@ -1511,7 +1434,7 @@
return;
}
- jit_gdb_entry_ = CreateCodeEntry(all.Begin(), all.Size());
+ jit_gdb_entry_ = CreateJITCodeEntry(all.Begin(), all.Size());
gdb_file_mapping_.reset(all_ptr.release());
}
diff --git a/runtime/jit/debugger_interface.cc b/runtime/jit/debugger_interface.cc
new file mode 100644
index 0000000..3c2898b
--- /dev/null
+++ b/runtime/jit/debugger_interface.cc
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2015 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 "debugger_interface.h"
+
+namespace art {
+
+// -------------------------------------------------------------------
+// Binary GDB JIT Interface as described in
+// http://sourceware.org/gdb/onlinedocs/gdb/Declarations.html
+// -------------------------------------------------------------------
+extern "C" {
+ typedef enum {
+ JIT_NOACTION = 0,
+ JIT_REGISTER_FN,
+ JIT_UNREGISTER_FN
+ } JITAction;
+
+ struct JITCodeEntry {
+ JITCodeEntry* next_;
+ JITCodeEntry* prev_;
+ const uint8_t *symfile_addr_;
+ uint64_t symfile_size_;
+ };
+
+ struct JITDescriptor {
+ uint32_t version_;
+ uint32_t action_flag_;
+ JITCodeEntry* relevant_entry_;
+ JITCodeEntry* first_entry_;
+ };
+
+ // GDB will place breakpoint into this function.
+ // To prevent GCC from inlining or removing it we place noinline attribute
+ // and inline assembler statement inside.
+ void __attribute__((noinline)) __jit_debug_register_code();
+ void __attribute__((noinline)) __jit_debug_register_code() {
+ __asm__("");
+ }
+
+ // GDB will inspect contents of this descriptor.
+ // Static initialization is necessary to prevent GDB from seeing
+ // uninitialized descriptor.
+ JITDescriptor __jit_debug_descriptor = { 1, JIT_NOACTION, nullptr, nullptr };
+}
+
+JITCodeEntry* CreateJITCodeEntry(const uint8_t *symfile_addr, uintptr_t symfile_size) {
+ JITCodeEntry* entry = new JITCodeEntry;
+ entry->symfile_addr_ = symfile_addr;
+ entry->symfile_size_ = symfile_size;
+ entry->prev_ = nullptr;
+
+ // TODO: Do we need a lock here?
+ entry->next_ = __jit_debug_descriptor.first_entry_;
+ if (entry->next_ != nullptr) {
+ entry->next_->prev_ = entry;
+ }
+ __jit_debug_descriptor.first_entry_ = entry;
+ __jit_debug_descriptor.relevant_entry_ = entry;
+
+ __jit_debug_descriptor.action_flag_ = JIT_REGISTER_FN;
+ __jit_debug_register_code();
+ return entry;
+}
+
+void DeleteJITCodeEntry(JITCodeEntry* entry) {
+ // TODO: Do we need a lock here?
+ if (entry->prev_ != nullptr) {
+ entry->prev_->next_ = entry->next_;
+ } else {
+ __jit_debug_descriptor.first_entry_ = entry->next_;
+ }
+
+ if (entry->next_ != nullptr) {
+ entry->next_->prev_ = entry->prev_;
+ }
+
+ __jit_debug_descriptor.relevant_entry_ = entry;
+ __jit_debug_descriptor.action_flag_ = JIT_UNREGISTER_FN;
+ __jit_debug_register_code();
+ delete entry;
+}
+
+} // namespace art
diff --git a/runtime/jit/debugger_interface.h b/runtime/jit/debugger_interface.h
new file mode 100644
index 0000000..a784ef5
--- /dev/null
+++ b/runtime/jit/debugger_interface.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2015 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.
+ */
+
+#ifndef ART_RUNTIME_JIT_DEBUGGER_INTERFACE_H_
+#define ART_RUNTIME_JIT_DEBUGGER_INTERFACE_H_
+
+#include <inttypes.h>
+
+namespace art {
+
+extern "C" {
+ struct JITCodeEntry;
+}
+
+// Notify native debugger about new JITed code by passing in-memory ELF.
+JITCodeEntry* CreateJITCodeEntry(const uint8_t *symfile_addr, uintptr_t symfile_size);
+
+// Notify native debugger that JITed code has been removed.
+void DeleteJITCodeEntry(JITCodeEntry* entry);
+
+} // namespace art
+
+#endif // ART_RUNTIME_JIT_DEBUGGER_INTERFACE_H_
