Changes to get the breakpad client compiling and running on Android using

ndk-7b.

Patch by Carlos Valdivia <carlosvaldivia@google.com>

Review URL: https://breakpad.appspot.com/363001/


git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@945 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/linux/android_link.h

@@ -33,7 +33,11 @@
 #ifndef GOOGLE_BREAKPAD_CLIENT_LINUX_ANDROID_LINK_H_
 #define GOOGLE_BREAKPAD_CLIENT_LINUX_ANDROID_LINK_H_
 
-#include <sys/exec_elf.h>
+// TODO(zhenghao): exec_elf.h conflicts with linux/elf.h.
+// But we still need ELFSIZE.
+//#include <sys/exec_elf.h>
+#include <machine/exec.h>
+#define ELFSIZE ARCH_ELFSIZE
 
 #ifndef ElfW
 #define ElfW(type)	_ElfW (Elf, ELFSIZE, type)

src/client/linux/handler/exception_handler.cc

@@ -90,6 +90,7 @@
 
 #include "common/linux/linux_libc_support.h"
 #include "common/memory.h"
+#include "client/linux/log/log.h"
 #include "client/linux/minidump_writer/linux_dumper.h"
 #include "client/linux/minidump_writer/minidump_writer.h"
 #include "common/linux/guid_creator.h"
@@ -391,14 +392,20 @@ bool ExceptionHandler::GenerateDump(CrashContext *context) {
     // is the write() and read() calls will fail with EBADF
     static const char no_pipe_msg[] = "ExceptionHandler::GenerateDump \
                                        sys_pipe failed:";
-    sys_write(2, no_pipe_msg, sizeof(no_pipe_msg) - 1);
-    sys_write(2, strerror(errno), strlen(strerror(errno)));
-    sys_write(2, "\n", 1);
+    logger::write(no_pipe_msg, sizeof(no_pipe_msg) - 1);
+    logger::write(strerror(errno), strlen(strerror(errno)));
+    logger::write("\n", 1);
   }
 
+#if defined(__ANDROID__)
+  const pid_t child = clone(
+      ThreadEntry, stack, CLONE_FILES | CLONE_FS | CLONE_UNTRACED,
+      &thread_arg);
+#else
   const pid_t child = sys_clone(
       ThreadEntry, stack, CLONE_FILES | CLONE_FS | CLONE_UNTRACED,
       &thread_arg, NULL, NULL, NULL);
+#endif
   int r, status;
   // Allow the child to ptrace us
   sys_prctl(PR_SET_PTRACER, child);
@@ -412,9 +419,9 @@ bool ExceptionHandler::GenerateDump(CrashContext *context) {
 
   if (r == -1) {
     static const char msg[] = "ExceptionHandler::GenerateDump waitpid failed:";
-    sys_write(2, msg, sizeof(msg) - 1);
-    sys_write(2, strerror(errno), strlen(strerror(errno)));
-    sys_write(2, "\n", 1);
+    logger::write(msg, sizeof(msg) - 1);
+    logger::write(strerror(errno), strlen(strerror(errno)));
+    logger::write("\n", 1);
   }
 
   bool success = r != -1 && WIFEXITED(status) && WEXITSTATUS(status) == 0;
@@ -434,9 +441,9 @@ void ExceptionHandler::SendContinueSignalToChild() {
   if(r == -1) {
     static const char msg[] = "ExceptionHandler::SendContinueSignalToChild \
                                sys_write failed:";
-    sys_write(2, msg, sizeof(msg) - 1);
-    sys_write(2, strerror(errno), strlen(strerror(errno)));
-    sys_write(2, "\n", 1);
+    logger::write(msg, sizeof(msg) - 1);
+    logger::write(strerror(errno), strlen(strerror(errno)));
+    logger::write("\n", 1);
   }
 }
 
@@ -449,9 +456,9 @@ void ExceptionHandler::WaitForContinueSignal() {
   if(r == -1) {
     static const char msg[] = "ExceptionHandler::WaitForContinueSignal \
                                sys_read failed:";
-    sys_write(2, msg, sizeof(msg) - 1);
-    sys_write(2, strerror(errno), strlen(strerror(errno)));
-    sys_write(2, "\n", 1);
+    logger::write(msg, sizeof(msg) - 1);
+    logger::write(strerror(errno), strlen(strerror(errno)));
+    logger::write("\n", 1);
   }
 }
 

src/client/linux/log/log.cc

@@ -0,0 +1,48 @@
+// Copyright (c) 2012 Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "client/linux/log/log.h"
+
+#if defined(__ANDROID__)
+#include <android/log.h>
+#else
+#include "third_party/lss/linux_syscall_support.h"
+#endif
+
+namespace logger {
+
+int write(const char* buf, size_t nbytes) {
+#if defined(__ANDROID__)
+  return __android_log_write(ANDROID_LOG_WARN, "google-breakpad", buf);
+#else
+  return sys_write(2, buf, nbytes);
+#endif
+}
+
+}  // namespace logger

src/client/linux/log/log.h

@@ -0,0 +1,41 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef CLIENT_LINUX_LOG_LOG_H_
+#define CLIENT_LINUX_LOG_LOG_H_
+
+#include <stddef.h>
+
+namespace logger {
+
+int write(const char* buf, size_t nbytes);
+
+}  // namespace logger
+
+#endif  // CLIENT_LINUX_LOG_LOG_H_

src/client/linux/minidump_writer/minidump_writer.cc

@@ -46,19 +46,19 @@
 #include "client/linux/minidump_writer/minidump_writer.h"
 #include "client/minidump_file_writer-inl.h"
 
+#include <ctype.h>
 #include <errno.h>
 #include <fcntl.h>
 #if !defined(__ANDROID__)
 #include <link.h>
 #endif
 #include <stdio.h>
-#include <unistd.h>
-#include <ctype.h>
 #if !defined(__ANDROID__)
 #include <sys/ucontext.h>
 #include <sys/user.h>
 #endif
 #include <sys/utsname.h>
+#include <unistd.h>
 
 #include <algorithm>
 
@@ -72,10 +72,11 @@
 #include "client/linux/handler/exception_handler.h"
 #include "client/linux/minidump_writer/line_reader.h"
 #include "client/linux/minidump_writer/linux_dumper.h"
-#include "client/linux/minidump_writer/linux_core_dumper.h"
 #include "client/linux/minidump_writer/linux_ptrace_dumper.h"
 #include "client/linux/minidump_writer/minidump_extension_linux.h"
+#include "client/minidump_file_writer.h"
 #include "common/linux/linux_libc_support.h"
+#include "google_breakpad/common/minidump_format.h"
 #include "third_party/lss/linux_syscall_support.h"
 
 // Minidump defines register structures which are different from the raw
@@ -1336,12 +1337,10 @@ bool WriteMinidump(const char* filename, pid_t crashing_process,
   return writer.Dump();
 }
 
-bool WriteMinidumpFromCore(const char* filename,
-                           const char* core_path,
-                           const char* procfs_override) {
-  MappingList mappings;
-  LinuxCoreDumper dumper(0, core_path, procfs_override);
-  MinidumpWriter writer(filename, NULL, mappings, &dumper);
+bool WriteMinidump(const char* filename,
+                   const MappingList& mappings,
+                   LinuxDumper* dumper) {
+  MinidumpWriter writer(filename, NULL, mappings, dumper);
   if (!writer.Init())
     return false;
   return writer.Dump();

src/client/linux/minidump_writer/minidump_writer.h

@@ -36,12 +36,19 @@
 #include <list>
 #include <utility>
 
+#include "client/linux/minidump_writer/linux_dumper.h"
 #include "google_breakpad/common/minidump_format.h"
 
 namespace google_breakpad {
 
+class ExceptionHandler;
+
+struct MappingEntry {
+  MappingInfo first;
+  u_int8_t second[sizeof(MDGUID)];
+};
+
 // A list of <MappingInfo, GUID>
-typedef std::pair<struct MappingInfo, u_int8_t[sizeof(MDGUID)]> MappingEntry;
 typedef std::list<MappingEntry> MappingList;
 
 // Write a minidump to the filesystem. This function does not malloc nor use
@@ -62,11 +69,9 @@ bool WriteMinidump(const char* filename, pid_t crashing_process,
                    const void* blob, size_t blob_size,
                    const MappingList& mappings);
 
-// Write a minidump to the filesystem.  Same as above, but uses the given
-// core file and procfs directory to generate the minidump post mortem.
-bool WriteMinidumpFromCore(const char* filename,
-                           const char* core_path,
-                           const char* procfs_override);
+bool WriteMinidump(const char* filename,
+                   const MappingList& mappings,
+                   LinuxDumper* dumper);
 
 }  // namespace google_breakpad
 

src/common/dwarf_cu_to_module.cc

@@ -440,7 +440,11 @@ void DwarfCUToModule::FuncHandler::Finish() {
     func->address = low_pc_;
     func->size = high_pc_ - low_pc_;
     func->parameter_size = 0;
-    cu_context_->functions.push_back(func);
+    if (func->address) {
+       // If the function address is zero this is a sign that this function
+       // description is just empty debug data and should just be discarded.
+       cu_context_->functions.push_back(func);
+     }
   } else if (inline_) {
     AbstractOrigin origin(name_);
     cu_context_->file_context->file_private->origins[offset_] = origin;

src/common/linux/file_id.cc

@@ -36,10 +36,11 @@
 
 #include <arpa/inet.h>
 #include <assert.h>
-#include <elf.h>
 #if defined(__ANDROID__)
+#include <linux/elf.h>
 #include "client/linux/android_link.h"
 #else
+#include <elf.h>
 #include <link.h>
 #endif
 #include <string.h>

src/common/linux/memory_mapped_file.cc

@@ -34,6 +34,9 @@
 
 #include <fcntl.h>
 #include <sys/mman.h>
+#if defined(__ANDROID__)
+#include <sys/stat.h>
+#endif
 #include <unistd.h>
 
 #include "common/memory_range.h"
@@ -59,7 +62,10 @@ bool MemoryMappedFile::Map(const char* path) {
     return false;
   }
 
-#if defined(__x86_64__)
+#if defined(__ANDROID__)
+  struct stat st;
+  if (fstat(fd, &st) != 0) {
+#elif defined(__x86_64__)
   struct kernel_stat st;
   if (sys_fstat(fd, &st) == -1 || st.st_size < 0) {
 #else

src/tools/linux/core2md/core2md.cc

@@ -32,12 +32,24 @@
 #include <stdio.h>
 
 #include "client/linux/minidump_writer/minidump_writer.h"
+#include "client/linux/minidump_writer/linux_core_dumper.h"
+
+using google_breakpad::MappingList;
+using google_breakpad::LinuxCoreDumper;
 
 static int ShowUsage(const char* argv0) {
   fprintf(stderr, "Usage: %s <core file> <procfs dir> <output>\n", argv0);
   return 1;
 }
 
+bool WriteMinidumpFromCore(const char* filename,
+                           const char* core_path,
+                           const char* procfs_override) {
+  MappingList mappings;
+  LinuxCoreDumper dumper(0, core_path, procfs_override);
+  return google_breakpad::WriteMinidump(filename, mappings, &dumper);
+}
+
 int main(int argc, char *argv[]) {
   if (argc != 4) {
     return ShowUsage(argv[0]);
@@ -46,9 +58,9 @@ int main(int argc, char *argv[]) {
   const char* core_file = argv[1];
   const char* procfs_dir = argv[2];
   const char* minidump_file = argv[3];
-  if (!google_breakpad::WriteMinidumpFromCore(minidump_file,
-                                              core_file,
-                                              procfs_dir)) {
+  if (!WriteMinidumpFromCore(minidump_file,
+                             core_file,
+                             procfs_dir)) {
     fprintf(stderr, "Unable to generate minidump.\n");
     return 1;
   }