ARM support, with some build system changes to support x86-64, arm, and i386 in an autoconf style build in Linux.  The O2 build for the unit tests is still broken but I'm checking this in to unblock people

A=nealsid
R=ajwong, hannahtang, ted.mielczarek



git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@541 4c0a9323-5329-0410-9bdc-e9ce6186880e
diff --git a/src/client/linux/Makefile b/src/client/linux/Makefile
index eb5a1f2..53e3b0f 100644
--- a/src/client/linux/Makefile
+++ b/src/client/linux/Makefile
@@ -1,7 +1,7 @@
 CXX=g++
 CC=gcc
 
-CXXFLAGS=-gstabs+ -I../../ -I../../testing/gtest/include -I../../testing -I../../third_party/linux/include -I../../testing/include -I../../testing/gtest -D_REENTRANT -m32 -Wall
+CXXFLAGS=-gstabs+ -I../../ -I../../testing/gtest/include -I../../testing -I../../third_party/linux/include -I../../testing/include -I../../testing/gtest -D_REENTRANT -Wall
 CFLAGS=$(CXXFLAGS)
 LDFLAGS=-lpthread
 
@@ -37,7 +37,13 @@
 LIB_CC_OBJ=$(patsubst %.cc, $(OBJ_DIR)/%.o,$(LIB_CC_SRC))
 LIB_C_OBJ=$(patsubst %.c, $(OBJ_DIR)/%.o, $(LIB_C_SRC))
 
+DUMPER_HELPER_TEST_C_SRC=minidump_writer/linux_dumper_unittest_helper.c
+
+DUMPER_HELPER_TEST_C_OBJ=$(patsubst %.cc, $(OBJ_DIR)/%.o, \
+			   $(DUMPER_HELPER_TEST_C_SRC))
+
 # Unit tests for client library 
+
 TEST_CC_SRC=handler/exception_handler_unittest.cc \
 	    minidump_writer/directory_reader_unittest.cc \
 	    minidump_writer/line_reader_unittest.cc \
@@ -72,9 +78,11 @@
 # Sender CLI tool binary
 SENDER_CLI_TOOL_BIN=$(BIN_DIR)/google_crashdump_uploader
 
+DUMPER_HELPER_TEST_BIN=$(BIN_DIR)/linux_dumper_unittest_helper
+
 .PHONY:all clean
 
-all:$(BREAKPAD_LIBRARY) $(UNITTEST_BIN) $(SENDER_LIBRARY) $(SENDER_UNITTEST_BIN) $(SENDER_CLI_TOOL_BIN)
+all:$(BREAKPAD_LIBRARY) $(UNITTEST_BIN) #$(SENDER_LIBRARY) $(SENDER_UNITTEST_BIN) $(SENDER_CLI_TOOL_BIN)
 
 check:$(UNITTEST_BIN) $(SENDER_UNITTEST_BIN)
 	$(UNITTEST_BIN)
@@ -83,9 +91,12 @@
 $(BIN_DIR)/libbreakpad.a:$(LIB_CC_OBJ) $(LIB_C_OBJ)
 	$(AR) rcs $@ $^
 
-$(BIN_DIR)/linux_client_test:$(TEST_CC_OBJ) $(BREAKPAD_LIBRARY)
+$(BIN_DIR)/linux_dumper_unittest_helper:$(DUMPER_HELPER_TEST_C_OBJ)
 	$(CXX) $(CXXFLAGS) $(LDFLAGS) $^ -o $@
 
+$(BIN_DIR)/linux_client_test:$(TEST_CC_OBJ) $(BREAKPAD_LIBRARY) $(DUMPER_HELPER_TEST_BIN)
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) $(TEST_CC_OBJ) $(BREAKPAD_LIBRARY) -o $@
+
 $(BIN_DIR)/libcrash_sender.a:$(SENDER_LIBRARY_OBJ)
 	$(AR) rcs $@ $^
 
@@ -100,4 +111,5 @@
 clean:
 	rm -f $(UNITTEST_BIN) $(BREAKPAD_LIBRARY) $(LIB_CC_OBJ) $(LIB_C_OBJ) \
 	$(TEST_CC_OBJ) $(SENDER_LIBRARY_OBJ) $(SENDER_LIBRARY) \
-	$(SENDER_TOOL_OBJ) $(SENDER_CLI_TOOL_BIN) $(SENDER_UNITTEST_BIN) core
+	$(SENDER_TOOL_OBJ) $(SENDER_CLI_TOOL_BIN) $(SENDER_UNITTEST_BIN) \
+	$(DUMPER_HELPER_TEST_BIN) core
diff --git a/src/client/linux/crash_generation/crash_generation_client.cc b/src/client/linux/crash_generation/crash_generation_client.cc
index 2463f1e..af02fdb 100644
--- a/src/client/linux/crash_generation/crash_generation_client.cc
+++ b/src/client/linux/crash_generation/crash_generation_client.cc
@@ -27,6 +27,7 @@
 // (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 <stdio.h>
 #include <sys/socket.h>
 #include <sys/types.h>
 
@@ -44,7 +45,6 @@
 {
   int fds[2];
   sys_socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
-
   static const unsigned kControlMsgSize = CMSG_SPACE(sizeof(int));
 
   struct kernel_msghdr msg;
diff --git a/src/client/linux/handler/exception_handler.cc b/src/client/linux/handler/exception_handler.cc
index 0108187..038612f 100644
--- a/src/client/linux/handler/exception_handler.cc
+++ b/src/client/linux/handler/exception_handler.cc
@@ -80,6 +80,9 @@
 #include <ucontext.h>
 #include <unistd.h>
 
+#include <algorithm>
+#include <vector>
+
 #include "common/linux/linux_libc_support.h"
 #include "common/linux/linux_syscall_support.h"
 #include "common/linux/memory.h"
@@ -88,7 +91,7 @@
 
 // A wrapper for the tgkill syscall: send a signal to a specific thread.
 static int tgkill(pid_t tgid, pid_t tid, int sig) {
-  syscall(__NR_tgkill, tgid, tid, sig);
+  return syscall(__NR_tgkill, tgid, tid, sig);
   return 0;
 }
 
@@ -145,7 +148,6 @@
                             const int server_fd)
 {
   crash_handler_ = NULL;
-
   if (0 <= server_fd)
     crash_generation_client_
       .reset(CrashGenerationClient::TryCreate(server_fd));
@@ -209,7 +211,11 @@
     sigaction(old_handlers_[i].first, action, NULL);
     delete action;
   }
-
+  pthread_mutex_lock(&handler_stack_mutex_);
+  std::vector<ExceptionHandler*>::iterator handler =
+      std::find(handler_stack_->begin(), handler_stack_->end(), this);
+  handler_stack_->erase(handler);
+  pthread_mutex_unlock(&handler_stack_mutex_);
   old_handlers_.clear();
 }
 
@@ -231,12 +237,15 @@
   }
 }
 
+// void ExceptionHandler::set_crash_handler(HandlerCallback callback) {
+//   crash_handler_ = callback;
+// }
+
 // This function runs in a compromised context: see the top of the file.
 // Runs on the crashing thread.
 // static
 void ExceptionHandler::SignalHandler(int sig, siginfo_t* info, void* uc) {
   // All the exception signals are blocked at this point.
-
   pthread_mutex_lock(&handler_stack_mutex_);
 
   if (!handler_stack_->size()) {
@@ -288,18 +297,25 @@
 
   // Allow ourselves to be dumped.
   sys_prctl(PR_SET_DUMPABLE, 1);
-
   CrashContext context;
   memcpy(&context.siginfo, info, sizeof(siginfo_t));
   memcpy(&context.context, uc, sizeof(struct ucontext));
-  memcpy(&context.float_state, ((struct ucontext *)uc)->uc_mcontext.fpregs,
-         sizeof(context.float_state));
+#if !defined(__ARM_EABI__)
+  // FP state is not part of user ABI on ARM Linux.
+  struct ucontext *uc_ptr = (struct ucontext*)uc;
+  if (uc_ptr->uc_mcontext.fpregs) {
+    memcpy(&context.float_state,
+           uc_ptr->uc_mcontext.fpregs,
+           sizeof(context.float_state));
+  }
+#endif
   context.tid = sys_gettid();
-
-  if (crash_handler_ && crash_handler_(&context, sizeof(context),
-                                       callback_context_))
-    return true;
-
+  if (crash_handler_ != NULL) {
+    if (crash_handler_(&context, sizeof(context),
+                       callback_context_)) {
+      return true;
+    }
+  }
   return GenerateDump(&context);
 }
 
@@ -364,6 +380,7 @@
 }
 
 bool ExceptionHandler::WriteMinidump() {
+#if !defined(__ARM_EABI__)
   // Allow ourselves to be dumped.
   sys_prctl(PR_SET_DUMPABLE, 1);
 
@@ -378,6 +395,9 @@
   bool success = GenerateDump(&context);
   UpdateNextID();
   return success;
+#else
+  return false;
+#endif  // !defined(__ARM_EABI__)
 }
 
 }  // namespace google_breakpad
diff --git a/src/client/linux/handler/exception_handler.h b/src/client/linux/handler/exception_handler.h
index 6182a6c..2a49703 100644
--- a/src/client/linux/handler/exception_handler.h
+++ b/src/client/linux/handler/exception_handler.h
@@ -34,6 +34,7 @@
 #include <string>
 
 #include <signal.h>
+#include <stdio.h>
 
 #include "client/linux/crash_generation/crash_generation_client.h"
 #include "processor/scoped_ptr.h"
@@ -42,6 +43,8 @@
 
 namespace google_breakpad {
 
+class ExceptionHandler;
+
 // ExceptionHandler
 //
 // ExceptionHandler can write a minidump file when an exception occurs,
@@ -163,7 +166,10 @@
     siginfo_t siginfo;
     pid_t tid;  // the crashing thread.
     struct ucontext context;
+#if !defined(__ARM_EABI__)
+    // #ifdef this out because FP state is not part of user ABI for Linux ARM.
     struct _libc_fpstate float_state;
+#endif
   };
 
   // Returns whether out-of-process dump generation is used or not.
diff --git a/src/client/linux/handler/exception_handler_unittest.cc b/src/client/linux/handler/exception_handler_unittest.cc
index 2e8a6db..9747fe7 100644
--- a/src/client/linux/handler/exception_handler_unittest.cc
+++ b/src/client/linux/handler/exception_handler_unittest.cc
@@ -36,7 +36,7 @@
 #include <sys/socket.h>
 #include <sys/uio.h>
 
-#include "client/linux/handler//exception_handler.h"
+#include "client/linux/handler/exception_handler.h"
 #include "client/linux/minidump_writer/minidump_writer.h"
 #include "common/linux/eintr_wrapper.h"
 #include "common/linux/linux_libc_support.h"
@@ -112,8 +112,8 @@
   ASSERT_TRUE(pfd.revents & POLLIN);
 
   uint32_t len;
-  ASSERT_EQ(read(fds[0], &len, sizeof(len)), sizeof(len));
-  ASSERT_LT(len, 2048);
+  ASSERT_EQ(read(fds[0], &len, sizeof(len)), (ssize_t)sizeof(len));
+  ASSERT_LT(len, (uint32_t)2048);
   char* filename = reinterpret_cast<char*>(malloc(len + 1));
   ASSERT_EQ(read(fds[0], filename, len), len);
   filename[len] = 0;
@@ -137,12 +137,10 @@
   const int fd = (intptr_t) context;
   int fds[2];
   pipe(fds);
-
   struct kernel_msghdr msg = {0};
   struct kernel_iovec iov;
   iov.iov_base = const_cast<void*>(crash_context);
   iov.iov_len = crash_context_size;
-
   msg.msg_iov = &iov;
   msg.msg_iovlen = 1;
   char cmsg[kControlMsgSize];
@@ -183,11 +181,10 @@
   const pid_t child = fork();
   if (child == 0) {
     close(fds[0]);
-    ExceptionHandler handler("/tmp", NULL, NULL, (void*) fds[1], true);
+    ExceptionHandler handler("/tmp1", NULL, NULL, (void*) fds[1], true);
     handler.set_crash_handler(CrashHandler);
     *reinterpret_cast<int*>(NULL) = 0;
   }
-
   close(fds[1]);
   struct msghdr msg = {0};
   struct iovec iov;
diff --git a/src/client/linux/minidump_writer/line_reader_unittest.cc b/src/client/linux/minidump_writer/line_reader_unittest.cc
index 222a098..7c4c3ce 100644
--- a/src/client/linux/minidump_writer/line_reader_unittest.cc
+++ b/src/client/linux/minidump_writer/line_reader_unittest.cc
@@ -69,9 +69,9 @@
   LineReader reader(fd);
 
   const char *line;
-  unsigned len;
+  unsigned int len;
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned int)1);
   ASSERT_EQ(line[0], 'a');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
@@ -90,7 +90,7 @@
   const char *line;
   unsigned len;
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned)1);
   ASSERT_EQ(line[0], 'a');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
@@ -109,13 +109,13 @@
   const char *line;
   unsigned len;
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned)1);
   ASSERT_EQ(line[0], 'a');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
 
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned)1);
   ASSERT_EQ(line[0], 'b');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
@@ -134,13 +134,13 @@
   const char *line;
   unsigned len;
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned)1);
   ASSERT_EQ(line[0], 'a');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
 
   ASSERT_TRUE(reader.GetNextLine(&line, &len));
-  ASSERT_EQ(len, 1);
+  ASSERT_EQ(len, (unsigned)1);
   ASSERT_EQ(line[0], 'b');
   ASSERT_EQ(line[1], 0);
   reader.PopLine(len);
diff --git a/src/client/linux/minidump_writer/linux_dumper.cc b/src/client/linux/minidump_writer/linux_dumper.cc
index 41929b8..be199f7 100644
--- a/src/client/linux/minidump_writer/linux_dumper.cc
+++ b/src/client/linux/minidump_writer/linux_dumper.cc
@@ -85,7 +85,7 @@
 
 LinuxDumper::LinuxDumper(int pid)
     : pid_(pid),
-      threads_suspened_(false),
+      threads_suspended_(false),
       threads_(&allocator_, 8),
       mappings_(&allocator_) {
 }
@@ -96,22 +96,22 @@
 }
 
 bool LinuxDumper::ThreadsSuspend() {
-  if (threads_suspened_)
+  if (threads_suspended_)
     return true;
   bool good = true;
   for (size_t i = 0; i < threads_.size(); ++i)
     good &= SuspendThread(threads_[i]);
-  threads_suspened_ = true;
+  threads_suspended_ = true;
   return good;
 }
 
 bool LinuxDumper::ThreadsResume() {
-  if (!threads_suspened_)
+  if (!threads_suspended_)
     return false;
   bool good = true;
   for (size_t i = 0; i < threads_.size(); ++i)
     good &= ResumeThread(threads_[i]);
-  threads_suspened_ = false;
+  threads_suspended_ = false;
   return good;
 }
 
@@ -312,9 +312,9 @@
 }
 
 // Read thread info from /proc/$pid/status.
-// Fill out the |tgid|, |ppid| and |pid| members of |info|. If unavailible,
+// Fill out the |tgid|, |ppid| and |pid| members of |info|. If unavailable,
 // these members are set to -1. Returns true iff all three members are
-// availible.
+// available.
 bool LinuxDumper::ThreadInfoGet(pid_t tid, ThreadInfo* info) {
   assert(info != NULL);
   char status_path[80];
@@ -371,6 +371,8 @@
   memcpy(&stack_pointer, &info->regs.esp, sizeof(info->regs.esp));
 #elif defined(__x86_64)
   memcpy(&stack_pointer, &info->regs.rsp, sizeof(info->regs.rsp));
+#elif defined(__ARM_EABI__)
+  memcpy(&stack_pointer, &info->regs.uregs[R13], sizeof(info->regs.uregs[R13]));
 #else
 #error "This code hasn't been ported to your platform yet."
 #endif
@@ -387,13 +389,9 @@
 // unwind. So we just grab, up to, 32k of stack.
 bool LinuxDumper::GetStackInfo(const void** stack, size_t* stack_len,
                                uintptr_t int_stack_pointer) {
-#if defined(__i386) || defined(__x86_64)
-  static const bool stack_grows_down = true;
-  static const uintptr_t page_size = 4096;
-#else
-#error "This code has not been ported to your platform yet."
-#endif
   // Move the stack pointer to the bottom of the page that it's in.
+  const uintptr_t page_size = getpagesize();
+
   uint8_t* const stack_pointer =
       reinterpret_cast<uint8_t*>(int_stack_pointer & ~(page_size - 1));
 
@@ -403,26 +401,19 @@
   const MappingInfo* mapping = FindMapping(stack_pointer);
   if (!mapping)
     return false;
-  if (stack_grows_down) {
-    const ptrdiff_t offset = stack_pointer - (uint8_t*) mapping->start_addr;
-    const ptrdiff_t distance_to_end =
-        static_cast<ptrdiff_t>(mapping->size) - offset;
-    *stack_len = distance_to_end > kStackToCapture ?
-                 kStackToCapture : distance_to_end;
-    *stack = stack_pointer;
-  } else {
-    const ptrdiff_t offset = stack_pointer - (uint8_t*) mapping->start_addr;
-    *stack_len = offset > kStackToCapture ? kStackToCapture : offset;
-    *stack = stack_pointer - *stack_len;
-  }
-
+  const ptrdiff_t offset = stack_pointer - (uint8_t*) mapping->start_addr;
+  const ptrdiff_t distance_to_end =
+      static_cast<ptrdiff_t>(mapping->size) - offset;
+  *stack_len = distance_to_end > kStackToCapture ?
+      kStackToCapture : distance_to_end;
+  *stack = stack_pointer;
   return true;
 }
 
 // static
 void LinuxDumper::CopyFromProcess(void* dest, pid_t child, const void* src,
                                   size_t length) {
-  unsigned long tmp;
+  unsigned long tmp = 55;
   size_t done = 0;
   static const size_t word_size = sizeof(tmp);
   uint8_t* const local = (uint8_t*) dest;
@@ -430,8 +421,9 @@
 
   while (done < length) {
     const size_t l = length - done > word_size ? word_size : length - done;
-    if (sys_ptrace(PTRACE_PEEKDATA, child, remote + done, &tmp) == -1)
+    if (sys_ptrace(PTRACE_PEEKDATA, child, remote + done, &tmp) == -1) {
       tmp = 0;
+    }
     memcpy(local + done, &tmp, l);
     done += l;
   }
diff --git a/src/client/linux/minidump_writer/linux_dumper.h b/src/client/linux/minidump_writer/linux_dumper.h
index 3e8869b..7a4cd3a 100644
--- a/src/client/linux/minidump_writer/linux_dumper.h
+++ b/src/client/linux/minidump_writer/linux_dumper.h
@@ -44,7 +44,7 @@
 typedef typeof(((struct user*) 0)->u_debugreg[0]) debugreg_t;
 
 // Typedef for our parsing of the auxv variables in /proc/pid/auxv.
-#if defined(__i386)
+#if defined(__i386) || defined(__ARM_EABI__)
 typedef Elf32_auxv_t elf_aux_entry;
 #elif defined(__x86_64__)
 typedef Elf64_auxv_t elf_aux_entry;
@@ -64,16 +64,20 @@
   const void* stack;  // pointer to the stack area
   size_t stack_len;  // length of the stack to copy
 
-  user_regs_struct regs;
-  user_fpregs_struct fpregs;
-#if defined(__i386)
-  user_fpxregs_struct fpxregs;
-#endif
 
 #if defined(__i386) || defined(__x86_64)
-
+  user_regs_struct regs;
+  user_fpregs_struct fpregs;
   static const unsigned kNumDebugRegisters = 8;
   debugreg_t dregs[8];
+#if defined(__i386)
+  user_fpxregs_struct fpxregs;
+#endif  // defined(__i386)
+
+#elif defined(__ARM_EABI__)
+  // Mimicking how strace does this(see syscall.c, search for GETREGS)
+  struct user_regs regs;
+  struct user_fpregs fpregs;
 #endif
 };
 
@@ -141,7 +145,7 @@
 
   mutable PageAllocator allocator_;
 
-  bool threads_suspened_;
+  bool threads_suspended_;
   wasteful_vector<pid_t> threads_;  // the ids of all the threads
   wasteful_vector<MappingInfo*> mappings_;  // info from /proc/<pid>/maps
 };
diff --git a/src/client/linux/minidump_writer/linux_dumper_unittest.cc b/src/client/linux/minidump_writer/linux_dumper_unittest.cc
index e060e53..6f1043c 100644
--- a/src/client/linux/minidump_writer/linux_dumper_unittest.cc
+++ b/src/client/linux/minidump_writer/linux_dumper_unittest.cc
@@ -29,10 +29,13 @@
 
 #include <limits.h>
 #include <unistd.h>
+#include <signal.h>
+#include <sys/types.h>
 
+#include "breakpad_googletest_includes.h"
 #include "client/linux/minidump_writer/linux_dumper.h"
 #include "common/linux/file_id.h"
-#include "breakpad_googletest_includes.h"
+#include "common/linux/memory.h"
 
 using namespace google_breakpad;
 
@@ -67,7 +70,7 @@
   LinuxDumper dumper(getpid());
   ASSERT_TRUE(dumper.Init());
 
-  ASSERT_GE(dumper.threads().size(), 1);
+  ASSERT_GE(dumper.threads().size(), (size_t)1);
   bool found = false;
   for (size_t i = 0; i < dumper.threads().size(); ++i) {
     if (dumper.threads()[i] == getpid()) {
@@ -77,6 +80,55 @@
   }
 }
 
+TEST(LinuxDumperTest, VerifyStackReadWithMultipleThreads) {
+  static const int kNumberOfThreadsInHelperProgram = 5;
+  char kNumberOfThreadsArgument[2];
+  sprintf(kNumberOfThreadsArgument, "%d", kNumberOfThreadsInHelperProgram);
+
+  pid_t child_pid = fork();
+  if (child_pid == 0) {
+    // Set the number of threads
+    execl("src/client/linux/linux_dumper_unittest_helper",
+          "linux_dumper_unittest_helper",
+          kNumberOfThreadsArgument,
+          NULL);
+    // Kill if we get here.
+    printf("Errno from exec: %d", errno);
+    FAIL() << "Exec failed: " << strerror(errno);
+    exit(0);
+  }
+  // The sleep is flaky, but prevents us from reading
+  // the child process before all threads have been created.
+  sleep(1);
+  LinuxDumper dumper(child_pid);
+  EXPECT_TRUE(dumper.Init());
+  EXPECT_EQ((size_t)kNumberOfThreadsInHelperProgram, dumper.threads().size());
+  EXPECT_TRUE(dumper.ThreadsSuspend());
+
+  ThreadInfo one_thread;
+  for(size_t i = 0; i < dumper.threads().size(); ++i) {
+    EXPECT_TRUE(dumper.ThreadInfoGet(dumper.threads()[i], &one_thread));
+    // We know the threads are in a function which has allocated exactly
+    // one word off the stack to store its thread id.
+#if defined(__ARM_EABI__)
+    void* process_tid_location = (void *)(one_thread.regs.uregs[11] - 8);
+#elif defined(__i386)
+    void* process_tid_location = (void *)(one_thread.regs.ebp - 4);
+#elif defined(__x86_64)
+    void* process_tid_location = (void *)(one_thread.regs.rbp - 4);
+#else
+#error Platform not supported!
+#endif
+    pid_t one_thread_id;
+    dumper.CopyFromProcess(&one_thread_id,
+                           dumper.threads()[i],
+                           process_tid_location,
+                           4);
+    EXPECT_EQ(dumper.threads()[i], one_thread_id);
+  }
+  kill(child_pid, SIGKILL);
+}
+
 TEST(LinuxDumperTest, BuildProcPath) {
   const pid_t pid = getpid();
   LinuxDumper dumper(pid);
@@ -106,28 +158,29 @@
 #endif
 }
 
+#if !defined(__ARM_EABI__)
 TEST(LinuxDumperTest, MappingsIncludeLinuxGate) {
   LinuxDumper dumper(getpid());
   ASSERT_TRUE(dumper.Init());
 
   void* linux_gate_loc = dumper.FindBeginningOfLinuxGateSharedLibrary(getpid());
-  if (linux_gate_loc) {
-    bool found_linux_gate = false;
+  ASSERT_TRUE(linux_gate_loc);
+  bool found_linux_gate = false;
 
-    const wasteful_vector<MappingInfo*> mappings = dumper.mappings();
-    const MappingInfo* mapping;
-    for (unsigned i = 0; i < mappings.size(); ++i) {
-      mapping = mappings[i];
-      if (!strcmp(mapping->name, kLinuxGateLibraryName)) {
-        found_linux_gate = true;
-        break;
-      }
+  const wasteful_vector<MappingInfo*> mappings = dumper.mappings();
+  const MappingInfo* mapping;
+  for (unsigned i = 0; i < mappings.size(); ++i) {
+    mapping = mappings[i];
+    if (!strcmp(mapping->name, kLinuxGateLibraryName)) {
+      found_linux_gate = true;
+      break;
     }
-    EXPECT_TRUE(found_linux_gate);
-    EXPECT_EQ(linux_gate_loc, reinterpret_cast<void*>(mapping->start_addr));
-    EXPECT_EQ(0, memcmp(linux_gate_loc, ELFMAG, SELFMAG));
   }
+  EXPECT_TRUE(found_linux_gate);
+  EXPECT_EQ(linux_gate_loc, reinterpret_cast<void*>(mapping->start_addr));
+  EXPECT_EQ(0, memcmp(linux_gate_loc, ELFMAG, SELFMAG));
 }
+#endif
 
 TEST(LinuxDumperTest, FileIDsMatch) {
   // Calculate the File ID of our binary using both
diff --git a/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc b/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc
new file mode 100644
index 0000000..f744d72
--- /dev/null
+++ b/src/client/linux/minidump_writer/linux_dumper_unittest_helper.cc
@@ -0,0 +1,64 @@
+// Copyright (c) 2010, 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.
+//
+// Helper program for the linux_dumper class, which creates a bunch of
+// threads. The first word of each thread's stack is set to the thread
+// id.
+
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+
+#pragma GCC optimize ("O0")
+void *thread_function(void *data) __attribute__((noinline, optimize("O2")));
+
+void *thread_function(void *data) {
+  pid_t thread_id = syscall(SYS_gettid);
+  while (true) ;
+  asm("");
+}
+
+int main(int argc, char *argv[]) {
+  int num_threads = atoi(argv[1]);
+  if (num_threads < 1) {
+    fprintf(stderr, "ERROR: number of threads is 0");
+    return 1;
+  }
+  pthread_t threads[num_threads];
+  pthread_attr_t thread_attributes;
+  pthread_attr_init(&thread_attributes);
+  pthread_attr_setdetachstate(&thread_attributes, PTHREAD_CREATE_DETACHED);
+  for (int i = 1; i < num_threads; i++) {
+    pthread_create(&threads[i], &thread_attributes, &thread_function, NULL);
+  }
+  thread_function(NULL);
+  return 0;
+}
diff --git a/src/client/linux/minidump_writer/minidump_writer.cc b/src/client/linux/minidump_writer/minidump_writer.cc
index 166b8e5..1ee9098 100644
--- a/src/client/linux/minidump_writer/minidump_writer.cc
+++ b/src/client/linux/minidump_writer/minidump_writer.cc
@@ -61,7 +61,7 @@
 
 #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_dumper.h"
 #include "common/linux/linux_libc_support.h"
 #include "common/linux/linux_syscall_support.h"
 
@@ -307,6 +307,54 @@
   memcpy(&out->flt_save.xmm_registers, &fpregs->_xmm, 16 * 16);
 }
 
+#elif defined(__ARMEL__)
+typedef MDRawContextARM RawContextCPU;
+
+static void CPUFillFromThreadInfo(MDRawContextARM *out,
+                                  const google_breakpad::ThreadInfo &info) {
+  out->context_flags = MD_CONTEXT_ARM_FULL;
+
+  for (int i = 0; i < MD_CONTEXT_ARM_GPR_COUNT; ++i)
+    out->iregs[i] = info.regs.uregs[i];
+  // No CPSR register in ThreadInfo(it's not accessible via ptrace)
+  out->cpsr = 0;
+  out->float_save.fpscr = info.fpregs.fpsr |
+    (static_cast<u_int64_t>(info.fpregs.fpcr) << 32);
+  //TODO: sort this out, actually collect floating point registers
+  memset(&out->float_save.regs, 0, sizeof(out->float_save.regs));
+  memset(&out->float_save.extra, 0, sizeof(out->float_save.extra));
+}
+
+static void CPUFillFromUContext(MDRawContextARM *out, const ucontext *uc,
+                                const struct _libc_fpstate* fpregs) {
+  out->context_flags = MD_CONTEXT_ARM_FULL;
+
+  out->iregs[0] = uc->uc_mcontext.arm_r0;
+  out->iregs[1] = uc->uc_mcontext.arm_r1;
+  out->iregs[2] = uc->uc_mcontext.arm_r2;
+  out->iregs[3] = uc->uc_mcontext.arm_r3;
+  out->iregs[4] = uc->uc_mcontext.arm_r4;
+  out->iregs[5] = uc->uc_mcontext.arm_r5;
+  out->iregs[6] = uc->uc_mcontext.arm_r6;
+  out->iregs[7] = uc->uc_mcontext.arm_r7;
+  out->iregs[8] = uc->uc_mcontext.arm_r8;
+  out->iregs[9] = uc->uc_mcontext.arm_r9;
+  out->iregs[10] = uc->uc_mcontext.arm_r10;
+
+  out->iregs[11] = uc->uc_mcontext.arm_fp;
+  out->iregs[12] = uc->uc_mcontext.arm_ip;
+  out->iregs[13] = uc->uc_mcontext.arm_sp;
+  out->iregs[14] = uc->uc_mcontext.arm_lr;
+  out->iregs[15] = uc->uc_mcontext.arm_pc;
+
+  out->cpsr = uc->uc_mcontext.arm_cpsr;
+
+  //TODO: fix this after fixing ExceptionHandler
+  out->float_save.fpscr = 0;
+  memset(&out->float_save.regs, 0, sizeof(out->float_save.regs));
+  memset(&out->float_save.extra, 0, sizeof(out->float_save.extra));
+}
+
 #else
 #error "This code has not been ported to your platform yet."
 #endif
@@ -321,7 +369,12 @@
       : filename_(filename),
         siginfo_(&context->siginfo),
         ucontext_(&context->context),
+#if !defined(__ARM_EABI__)
         float_state_(&context->float_state),
+#else
+        //TODO: fix this after fixing ExceptionHandler
+        float_state_(NULL),
+#endif
         crashing_tid_(context->tid),
         dumper_(crashing_pid) {
   }
@@ -612,6 +665,10 @@
   uintptr_t GetStackPointer() {
     return ucontext_->uc_mcontext.gregs[REG_RSP];
   }
+#elif defined(__ARM_EABI__)
+  uintptr_t GetStackPointer() {
+    return ucontext_->uc_mcontext.arm_sp;
+  }
 #else
 #error "This code has not been ported to your platform yet."
 #endif
@@ -644,6 +701,8 @@
         MD_CPU_ARCHITECTURE_X86;
 #elif defined(__x86_64)
         MD_CPU_ARCHITECTURE_AMD64;
+#elif defined(__arm__)
+        MD_CPU_ARCHITECTURE_ARM;
 #else
 #error "Unknown CPU arch"
 #endif
diff --git a/src/common/linux/linux_syscall_support.h b/src/common/linux/linux_syscall_support.h
index f95400d..1f06fd7 100644
--- a/src/common/linux/linux_syscall_support.h
+++ b/src/common/linux/linux_syscall_support.h
@@ -77,7 +77,8 @@
  * Porting to other related platforms should not be difficult.
  */
 #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) ||   \
-     defined(__mips__) || defined(__PPC__)) && defined(__linux)
+     defined(__mips__) || defined(__PPC__) || defined(__ARM_EABI__)) \
+  && defined(__linux)
 
 #ifndef SYS_CPLUSPLUS
 #ifdef __cplusplus
@@ -105,7 +106,6 @@
 /* Include definitions of the ABI currently in use.                          */
 #include <sgidefs.h>
 #endif
-
 #endif
 
 /* As glibc often provides subtly incompatible data structures (and implicit
@@ -217,7 +217,8 @@
 };
 
 struct siginfo;
-#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__PPC__)
+#if defined(__i386__) || defined(__ARM_EABI__) || defined(__ARM_ARCH_3__) \
+  || defined(__PPC__)
 
 /* include/asm-{arm,i386,mips,ppc}/signal.h                                  */
 struct kernel_old_sigaction {
@@ -354,7 +355,7 @@
 #endif
 
 /* include/asm-{arm,i386,mips,x86_64,ppc}/stat.h                             */
-#if defined(__i386__) || defined(__ARM_ARCH_3__)
+#if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
 struct kernel_stat {
   /* The kernel headers suggest that st_dev and st_rdev should be 32bit
    * quantities encoding 12bit major and 20bit minor numbers in an interleaved
@@ -520,7 +521,7 @@
 
 /* Definitions missing from the standard header files                        */
 #ifndef O_DIRECTORY
-#if defined(__ARM_ARCH_3__)
+#if defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
 #define O_DIRECTORY             0040000
 #else
 #define O_DIRECTORY             0200000
@@ -641,7 +642,7 @@
 #define __NR_move_pages         317
 #endif
 /* End of i386 definitions                                                   */
-#elif defined(__ARM_ARCH_3__)
+#elif defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
 #ifndef __NR_setresuid
 #define __NR_setresuid          (__NR_SYSCALL_BASE + 164)
 #define __NR_setresgid          (__NR_SYSCALL_BASE + 170)
@@ -715,7 +716,7 @@
 #ifndef __NR_move_pages
 #define __NR_move_pages         (__NR_SYSCALL_BASE + 344)
 #endif
-/* End of ARM 3 definitions                                                  */
+/* End of ARM 3/EABI definitions                                                */
 #elif defined(__x86_64__)
 #ifndef __NR_setresuid
 #define __NR_setresuid          117
@@ -1087,7 +1088,8 @@
   #endif
 
   #undef  LSS_RETURN
-  #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__))
+  #if (defined(__i386__) || defined(__x86_64__) || defined(__ARM_ARCH_3__) \
+       || defined(__ARM_EABI__))
   /* Failing system calls return a negative result in the range of
    * -1..-4095. These are "errno" values with the sign inverted.
    */
@@ -1526,11 +1528,6 @@
       return res;
     }
   #elif defined(__ARM_ARCH_3__)
-    /* Most definitions of _syscallX() neglect to mark "memory" as being
-     * clobbered. This causes problems with compilers, that do a better job
-     * at optimizing across __asm__ calls.
-     * So, we just have to redefine all fo the _syscallX() macros.
-     */
     #undef LSS_REG
     #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
     #undef  LSS_BODY
@@ -1646,6 +1643,135 @@
       }
       LSS_RETURN(int, __res);
     }
+  #elif defined(__ARM_EABI__)
+    /* Most definitions of _syscallX() neglect to mark "memory" as being
+     * clobbered. This causes problems with compilers, that do a better job
+     * at optimizing across __asm__ calls.
+     * So, we just have to redefine all fo the _syscallX() macros.
+     */
+    #undef LSS_REG
+    #define LSS_REG(r,a) register long __r##r __asm__("r"#r) = (long)a
+    #undef  LSS_BODY
+    #define LSS_BODY(type,name,args...)                                       \
+          register long __res_r0 __asm__("r0");                               \
+          long __res;                                                         \
+          __asm__ __volatile__ ("push {r7}\n"                                 \
+                                "mov r7, %1\n"                                \
+                                "swi 0x0\n"                                   \
+                                "pop {r7}\n"                                  \
+                                : "=r"(__res_r0)                              \
+                                : "i"(__NR_##name) , ## args                  \
+                                : "lr", "memory");                            \
+          __res = __res_r0;                                                   \
+          LSS_RETURN(type, __res)
+    #undef _syscall0
+    #define _syscall0(type, name)                                             \
+      type LSS_NAME(name)() {                                                 \
+        LSS_BODY(type, name);                                                 \
+      }
+    #undef _syscall1
+    #define _syscall1(type, name, type1, arg1)                                \
+      type LSS_NAME(name)(type1 arg1) {                                       \
+        LSS_REG(0, arg1); LSS_BODY(type, name, "r"(__r0));                    \
+      }
+    #undef _syscall2
+    #define _syscall2(type, name, type1, arg1, type2, arg2)                   \
+      type LSS_NAME(name)(type1 arg1, type2 arg2) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1));                           \
+      }
+    #undef _syscall3
+    #define _syscall3(type, name, type1, arg1, type2, arg2, type3, arg3)      \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3) {               \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2));                \
+      }
+    #undef _syscall4
+    #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4)  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4) {   \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4);                                                     \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3));     \
+      }
+    #undef _syscall5
+    #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5)                                             \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5) {                                       \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5);                                   \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4));                                      \
+      }
+    #undef _syscall6
+    #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,  \
+                      type5,arg5,type6,arg6)                                  \
+      type LSS_NAME(name)(type1 arg1, type2 arg2, type3 arg3, type4 arg4,     \
+                          type5 arg5, type6 arg6) {                           \
+        LSS_REG(0, arg1); LSS_REG(1, arg2); LSS_REG(2, arg3);                 \
+        LSS_REG(3, arg4); LSS_REG(4, arg5); LSS_REG(5, arg6);                 \
+        LSS_BODY(type, name, "r"(__r0), "r"(__r1), "r"(__r2), "r"(__r3),      \
+                             "r"(__r4), "r"(__r5));                           \
+      }
+    LSS_INLINE int LSS_NAME(clone)(int (*fn)(void *), void *child_stack,
+                                   int flags, void *arg, int *parent_tidptr,
+                                   void *newtls, int *child_tidptr) {
+      long __res;
+      {
+        register int   __flags __asm__("r0") = flags;
+        register void *__stack __asm__("r1") = child_stack;
+        register void *__ptid  __asm__("r2") = parent_tidptr;
+        register void *__tls   __asm__("r3") = newtls;
+        register int  *__ctid  __asm__("r4") = child_tidptr;
+        __asm__ __volatile__(/* if (fn == NULL || child_stack == NULL)
+                              *   return -EINVAL;
+                              */
+                             "cmp   %2,#0\n"
+                             "cmpne %3,#0\n"
+                             "moveq %0,%1\n"
+                             "beq   1f\n"
+
+                             /* Push "arg" and "fn" onto the stack that will be
+                              * used by the child.
+                              */
+                             "str   %5,[%3,#-4]!\n"
+                             "str   %2,[%3,#-4]!\n"
+
+                             /* %r0 = syscall(%r0 = flags,
+                              *               %r1 = child_stack,
+                              *               %r2 = parent_tidptr,
+                              *               %r3 = newtls,
+                              *               %r4 = child_tidptr)
+                              */
+                             "mov r7, %9\n"
+                             "swi 0x0\n"
+
+                             /* if (%r0 != 0)
+                              *   return %r0;
+                              */
+                             "movs  %0,r0\n"
+                             "bne   1f\n"
+
+                             /* In the child, now. Call "fn(arg)".
+                              */
+                             "ldr   r0,[sp, #4]\n"
+                             "mov   lr,pc\n"
+                             "ldr   pc,[sp]\n"
+
+                             /* Call _exit(%r0).
+                              */
+                             "mov r7, %10\n"
+                             "swi 0x0\n"
+                           "1:\n"
+                             : "=r" (__res)
+                             : "i"(-EINVAL),
+                               "r"(fn), "r"(__stack), "r"(__flags), "r"(arg),
+                               "r"(__ptid), "r"(__tls), "r"(__ctid),
+                               "i"(__NR_clone), "i"(__NR_exit)
+                             : "lr", "memory");
+      }
+      LSS_RETURN(int, __res);
+    }
   #elif defined(__mips__)
     #undef LSS_REG
     #define LSS_REG(r,a) register unsigned long __r##r __asm__("$"#r) =       \
@@ -2082,8 +2208,10 @@
   LSS_INLINE _syscall0(pid_t,   getppid)
   LSS_INLINE _syscall2(int,     getpriority,     int,         a,
                        int,            b)
+#if !defined(__ARM_EABI__)
   LSS_INLINE _syscall2(int,     getrlimit,       int,         r,
                       struct kernel_rlimit*, l)
+#endif
   LSS_INLINE _syscall1(pid_t,   getsid,          pid_t,       p)
   LSS_INLINE _syscall0(pid_t,   _gettid)
   LSS_INLINE _syscall5(int,     setxattr,        const char *,p,
@@ -2237,6 +2365,7 @@
     }
   #endif
   #if defined(__x86_64__) || defined(__ARM_ARCH_3__) ||                       \
+      defined(__ARM_EABI__) ||                                             \
      (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI32)
     LSS_INLINE _syscall4(pid_t, wait4,            pid_t, p,
                          int*,                    s, int,       o,
@@ -2250,13 +2379,15 @@
     LSS_INLINE _syscall4(int, openat, int, d, const char *, p, int, f, int, m)
     LSS_INLINE _syscall3(int, unlinkat, int, d, const char *, p, int, f)
   #endif
-  #if defined(__i386__) || defined(__ARM_ARCH_3__)
+  #if defined(__i386__) || defined(__ARM_ARCH_3__) || defined(__ARM_EABI__)
     #define __NR__setfsgid32  __NR_setfsgid32
     #define __NR__setfsuid32  __NR_setfsuid32
     #define __NR__setresgid32 __NR_setresgid32
     #define __NR__setresuid32 __NR_setresuid32
+#if defined(__ARM_EABI__)
     LSS_INLINE _syscall2(int,   ugetrlimit,        int,          r,
                         struct kernel_rlimit*, l)
+#endif
     LSS_INLINE _syscall1(int,     _setfsgid32,      gid_t,       f)
     LSS_INLINE _syscall1(int,     _setfsuid32,      uid_t,       f)
     LSS_INLINE _syscall3(int,     _setresgid32,    gid_t,       r,
@@ -2365,6 +2496,7 @@
     }
   }
   #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                         \
+      defined(__ARM_EABI__) ||                                             \
      (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32) || defined(__PPC__)
     #define __NR__sigaction   __NR_sigaction
     #define __NR__sigpending  __NR_sigpending
@@ -2375,7 +2507,9 @@
                          struct kernel_stat64 *, b)
     LSS_INLINE _syscall5(int, _llseek,     uint, fd, ulong, hi, ulong, lo,
                          loff_t *, res, uint, wh)
+#if !defined(__ARM_EABI__)
     LSS_INLINE _syscall1(void*, mmap,              void*, a)
+#endif
     LSS_INLINE _syscall6(void*, mmap2,             void*, s,
                          size_t,                   l, int,               p,
                          int,                      f, int,               d,
@@ -2590,12 +2724,24 @@
       LSS_SC_BODY(4, int, 8, d, type, protocol, sv);
     }
   #endif
-  #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                         \
+  #if defined(__ARM_EABI__)
+    LSS_INLINE _syscall3(ssize_t, recvmsg, int, s, struct kernel_msghdr*, msg,
+                         int, flags);
+    LSS_INLINE _syscall3(ssize_t, sendmsg, int, s, const struct kernel_msghdr*,
+                         msg, int, flags);
+    LSS_INLINE _syscall6(ssize_t, sendto, int, s, const void*, buf, size_t, len,
+                         int, falgs, const struct kernel_sockaddr*, to,
+                         unsigned int, tolen);
+    LSS_INLINE _syscall2(int, shutdown, int, s, int, how);
+    LSS_INLINE _syscall3(int, socket, int, domain, int, type, int, protocol);
+    LSS_INLINE _syscall4(int, socketpair, int, d, int, type, int, protocol, 
+                         int*, sv);
+  #endif
+  #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                      \
       (defined(__mips__) && _MIPS_SIM == _MIPS_SIM_ABI32)
     #define __NR__socketcall  __NR_socketcall
     LSS_INLINE _syscall2(int,      _socketcall,    int,   c,
                          va_list,                  a)
-
     LSS_INLINE int LSS_NAME(socketcall)(int op, ...) {
       int rc;
       va_list ap;
@@ -2604,29 +2750,24 @@
       va_end(ap);
       return rc;
     }
-
     LSS_INLINE ssize_t LSS_NAME(recvmsg)(int s,struct kernel_msghdr *msg,
                                          int flags){
       return (ssize_t)LSS_NAME(socketcall)(17, s, msg, flags);
     }
-
     LSS_INLINE ssize_t LSS_NAME(sendmsg)(int s,
                                          const struct kernel_msghdr *msg,
                                          int flags) {
       return (ssize_t)LSS_NAME(socketcall)(16, s, msg, flags);
     }
-
     LSS_INLINE ssize_t LSS_NAME(sendto)(int s, const void *buf, size_t len,
                                         int flags,
                                         const struct kernel_sockaddr *to,
                                         unsigned int tolen) {
       return (ssize_t)LSS_NAME(socketcall)(11, s, buf, len, flags, to, tolen);
     }
-
     LSS_INLINE int LSS_NAME(shutdown)(int s, int how) {
       return LSS_NAME(socketcall)(13, s, how);
     }
-
     LSS_INLINE int LSS_NAME(socket)(int domain, int type, int protocol) {
       return LSS_NAME(socketcall)(1, domain, type, protocol);
     }
@@ -2673,6 +2814,7 @@
   #endif
   /* TODO(csilvers): see if ppc can/should support this as well              */
   #if defined(__i386__) || defined(__ARM_ARCH_3__) ||                         \
+      defined(__ARM_EABI__) ||                                             \
      (defined(__mips__) && _MIPS_SIM != _MIPS_SIM_ABI64)
     #define __NR__statfs64  __NR_statfs64
     #define __NR__fstatfs64 __NR_fstatfs64
@@ -2743,8 +2885,13 @@
     switch (name) {
       case _SC_OPEN_MAX: {
         struct kernel_rlimit limit;
+#if defined(__ARM_EABI__)
+        return LSS_NAME(ugetrlimit)(RLIMIT_NOFILE, &limit) < 0
+            ? 8192 : limit.rlim_cur;
+#else
         return LSS_NAME(getrlimit)(RLIMIT_NOFILE, &limit) < 0
-               ? 8192 : limit.rlim_cur;
+            ? 8192 : limit.rlim_cur;
+#endif
       }
       case _SC_PAGESIZE:
         return __getpagesize();
diff --git a/src/config.h.in b/src/config.h.in
index 6b4c3e4..5ee5ce6 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -9,6 +9,9 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
+/* Define if you have POSIX threads libraries and header files. */
+#undef HAVE_PTHREAD
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
@@ -30,6 +33,10 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* Define to the sub-directory in which libtool stores uninstalled libraries.
+   */
+#undef LT_OBJDIR
+
 /* Name of package */
 #undef PACKAGE
 
@@ -45,9 +52,16 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* Define to necessary symbol if this constant uses a non-standard name on
+   your system. */
+#undef PTHREAD_CREATE_JOINABLE
+
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS