fix openjdk7 build for glibc

2 files changed, 32 insertions, 6360 deletions

diff --git a/package/openjdk7/Makefile b/package/openjdk7/Makefile
index 18578561c..027309fbf 100644
--- a/package/openjdk7/Makefile
+++ b/package/openjdk7/Makefile
@@ -5,7 +5,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=		openjdk7
 PKG_VERSION:=		2.4.7
-PKG_RELEASE:=		5
+PKG_RELEASE:=		6
 PKG_MD5SUM:=		f6b28633b9978fadc724247cfc264ff0
 PKG_DESCR:=		java virtual machine
 PKG_SECTION:=		dev/lang
@@ -21,6 +21,7 @@ PKG_DEPENDS+=		libpng giflib libgtk glib fontconfig
 PKG_URL:=		http://openjdk.org/
 PKG_SITES:=		http://icedtea.classpath.org/download/source/
 
+PKG_BUILDDEP_UCLIBC:=	libiconv-tiny
 DISTFILES:=		icedtea-$(PKG_VERSION).tar.xz
 WRKDIST=		${WRKDIR}/icedtea-${PKG_VERSION}
 
diff --git a/package/openjdk7/patches/openadk.patch b/package/openjdk7/patches/openadk.patch
index 601640a92..16f4fae8c 100644
--- a/package/openjdk7/patches/openadk.patch
+++ b/package/openjdk7/patches/openadk.patch
@@ -1,6 +1,6 @@
 diff -Nur icedtea-2.4.7.orig/Makefile.in icedtea-2.4.7/Makefile.in
 --- icedtea-2.4.7.orig/Makefile.in	2014-04-16 06:20:44.689988653 +0200
-+++ icedtea-2.4.7/Makefile.in	2014-05-01 13:34:58.421434811 +0200
++++ icedtea-2.4.7/Makefile.in	2014-06-17 17:37:10.283965087 +0200
 @@ -712,7 +712,7 @@
  	$(am__append_14) $(am__append_15) $(DISTRIBUTION_PATCHES)
  
@@ -12,11 +12,11 @@ diff -Nur icedtea-2.4.7.orig/Makefile.in icedtea-2.4.7/Makefile.in
  	patches/boot/demos.patch patches/boot/fphexconstants.patch \
 diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk.patch
 --- icedtea-2.4.7.orig/patches/openadk.patch	1970-01-01 01:00:00.000000000 +0100
-+++ icedtea-2.4.7/patches/openadk.patch	2014-05-15 15:52:54.503242117 +0200
-@@ -0,0 +1,7020 @@
++++ icedtea-2.4.7/patches/openadk.patch	2014-06-17 17:42:10.926234673 +0200
+@@ -0,0 +1,691 @@
 +diff -Nur openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make openjdk/hotspot/make/linux/makefiles/zeroshark.make
 +--- openjdk.orig/hotspot/make/linux/makefiles/zeroshark.make	2014-02-20 19:51:45.000000000 +0100
-++++ openjdk/hotspot/make/linux/makefiles/zeroshark.make	2014-05-13 16:56:38.917714592 +0200
+++++ openjdk/hotspot/make/linux/makefiles/zeroshark.make	2014-06-17 17:39:28.697018938 +0200
 +@@ -39,20 +39,20 @@
 + 
 + offsets_arm.s:	mkoffsets
@@ -44,7 +44,7 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
 + endif
 +diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp openjdk/hotspot/src/os/linux/vm/os_linux.cpp
 +--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp	2014-02-20 19:51:45.000000000 +0100
-++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp	2014-05-13 16:14:56.637091447 +0200
+++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp	2014-06-17 17:39:28.701018968 +0200
 +@@ -112,7 +112,6 @@
 + # include <string.h>
 + # include <syscall.h>
@@ -99,6002 +99,9 @@ diff -Nur icedtea-2.4.7.orig/patches/openadk.patch icedtea-2.4.7/patches/openadk
 + }
 + 
 + void os::pause() {
-+diff -Nur openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig
-+--- openjdk.orig/hotspot/src/os/linux/vm/os_linux.cpp.orig	1970-01-01 01:00:00.000000000 +0100
-++++ openjdk/hotspot/src/os/linux/vm/os_linux.cpp.orig	2014-02-20 19:51:45.000000000 +0100
-+@@ -0,0 +1,5989 @@
-++/*
-++ * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
-++ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
-++ *
-++ * This code is free software; you can redistribute it and/or modify it
-++ * under the terms of the GNU General Public License version 2 only, as
-++ * published by the Free Software Foundation.
-++ *
-++ * This code is distributed in the hope that it will be useful, but WITHOUT
-++ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
-++ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
-++ * version 2 for more details (a copy is included in the LICENSE file that
-++ * accompanied this code).
-++ *
-++ * You should have received a copy of the GNU General Public License version
-++ * 2 along with this work; if not, write to the Free Software Foundation,
-++ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-++ *
-++ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
-++ * or visit www.oracle.com if you need additional information or have any
-++ * questions.
-++ *
-++ */
-++
-++// no precompiled headers
-++#include "classfile/classLoader.hpp"
-++#include "classfile/systemDictionary.hpp"
-++#include "classfile/vmSymbols.hpp"
-++#include "code/icBuffer.hpp"
-++#include "code/vtableStubs.hpp"
-++#include "compiler/compileBroker.hpp"
-++#include "interpreter/interpreter.hpp"
-++#include "jvm_linux.h"
-++#include "memory/allocation.inline.hpp"
-++#include "memory/filemap.hpp"
-++#include "mutex_linux.inline.hpp"
-++#include "oops/oop.inline.hpp"
-++#include "os_share_linux.hpp"
-++#include "prims/jniFastGetField.hpp"
-++#include "prims/jvm.h"
-++#include "prims/jvm_misc.hpp"
-++#include "runtime/arguments.hpp"
-++#include "runtime/extendedPC.hpp"
-++#include "runtime/globals.hpp"
-++#include "runtime/interfaceSupport.hpp"
-++#include "runtime/init.hpp"
-++#include "runtime/java.hpp"
-++#include "runtime/javaCalls.hpp"
-++#include "runtime/mutexLocker.hpp"
-++#include "runtime/objectMonitor.hpp"
-++#include "runtime/osThread.hpp"
-++#include "runtime/perfMemory.hpp"
-++#include "runtime/sharedRuntime.hpp"
-++#include "runtime/statSampler.hpp"
-++#include "runtime/stubRoutines.hpp"
-++#include "runtime/threadCritical.hpp"
-++#include "runtime/timer.hpp"
-++#include "services/attachListener.hpp"
-++#include "services/memTracker.hpp"
-++#include "services/runtimeService.hpp"
-++#include "thread_linux.inline.hpp"
-++#include "utilities/decoder.hpp"
-++#include "utilities/defaultStream.hpp"
-++#include "utilities/events.hpp"
-++#include "utilities/elfFile.hpp"
-++#include "utilities/growableArray.hpp"
-++#include "utilities/vmError.hpp"
-++#ifdef TARGET_ARCH_x86
-++# include "assembler_x86.inline.hpp"
-++# include "nativeInst_x86.hpp"
-++#endif
-++#ifdef TARGET_ARCH_sparc
-++# include "assembler_sparc.inline.hpp"
-++# include "nativeInst_sparc.hpp"
-++#endif
-++#ifdef TARGET_ARCH_zero
-++# include "assembler_zero.inline.hpp"
-++# include "nativeInst_zero.hpp"
-++#endif
-++#ifdef TARGET_ARCH_arm
-++# include "assembler_arm.inline.hpp"
-++# include "nativeInst_arm.hpp"
-++#endif
-++#ifdef TARGET_ARCH_ppc
-++# include "assembler_ppc.inline.hpp"
-++# include "nativeInst_ppc.hpp"
-++#endif
-++
-++// put OS-includes here
-++# include <sys/types.h>
-++# include <sys/mman.h>
-++# include <sys/stat.h>
-++# include <sys/select.h>
-++# include <pthread.h>
-++# include <signal.h>
-++# include <errno.h>
-++# include <dlfcn.h>
-++# include <stdio.h>
-++# include <unistd.h>
-++# include <sys/resource.h>
-++# include <pthread.h>
-++# include <sys/stat.h>
-++# include <sys/time.h>
-++# include <sys/times.h>
-++# include <sys/utsname.h>
-++# include <sys/socket.h>
-++# include <sys/wait.h>
-++# include <pwd.h>
-++# include <poll.h>
-++# include <semaphore.h>
-++# include <fcntl.h>
-++# include <string.h>
-++# include <syscall.h>
-++# include <sys/sysinfo.h>
-++# include <gnu/libc-version.h>
-++# include <sys/ipc.h>
-++# include <sys/shm.h>
-++# include <link.h>
-++# include <stdint.h>
-++# include <inttypes.h>
-++# include <sys/ioctl.h>
-++
-++#define MAX_PATH    (2 * K)
-++
-++// for timer info max values which include all bits
-++#define ALL_64_BITS CONST64(0xFFFFFFFFFFFFFFFF)
-++
-++#define LARGEPAGES_BIT (1 << 6)
-++
-++#ifndef EM_AARCH64
-++#define EM_AARCH64	183		/* ARM AARCH64 */
-++#endif
-++
-++////////////////////////////////////////////////////////////////////////////////
-++// global variables
-++julong os::Linux::_physical_memory = 0;
-++
-++address   os::Linux::_initial_thread_stack_bottom = NULL;
-++uintptr_t os::Linux::_initial_thread_stack_size   = 0;
-++
-++int (*os::Linux::_clock_gettime)(clockid_t, struct timespec *) = NULL;
-++int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL;
-++Mutex* os::Linux::_createThread_lock = NULL;
-++pthread_t os::Linux::_main_thread;
-++int os::Linux::_page_size = -1;
-++const int os::Linux::_vm_default_page_size = (8 * K);
-++bool os::Linux::_is_floating_stack = false;
-++bool os::Linux::_is_NPTL = false;
-++bool os::Linux::_supports_fast_thread_cpu_time = false;
-++const char * os::Linux::_glibc_version = NULL;
-++const char * os::Linux::_libpthread_version = NULL;
-++
-++static jlong initial_time_count=0;
-++
-++static int clock_tics_per_sec = 100;
-++
-++// For diagnostics to print a message once. see run_periodic_checks
-++static sigset_t check_signal_done;
-++static bool check_signals = true;;
-++
-++static pid_t _initial_pid = 0;
-++
-++/* Signal number used to suspend/resume a thread */
-++
-++/* do not use any signal number less than SIGSEGV, see 4355769 */
-++static int SR_signum = SIGUSR2;
-++sigset_t SR_sigset;
-++
-++/* Used to protect dlsym() calls */
-++static pthread_mutex_t dl_mutex;
-++
-++// Declarations
-++static void unpackTime(timespec* absTime, bool isAbsolute, jlong time);
-++
-++#ifdef JAVASE_EMBEDDED
-++class MemNotifyThread: public Thread {
-++  friend class VMStructs;
-++ public:
-++  virtual void run();
-++
-++ private:
-++  static MemNotifyThread* _memnotify_thread;
-++  int _fd;
-++
-++ public:
-++
-++  // Constructor
-++  MemNotifyThread(int fd);
-++
-++  // Tester
-++  bool is_memnotify_thread() const { return true; }
-++
-++  // Printing
-++  char* name() const { return (char*)"Linux MemNotify Thread"; }
-++
-++  // Returns the single instance of the MemNotifyThread
-++  static MemNotifyThread* memnotify_thread() { return _memnotify_thread; }
-++
-++  // Create and start the single instance of MemNotifyThread
-++  static void start();
-++};
-++#endif // JAVASE_EMBEDDED
-++
-++// utility functions
-++
-++static int SR_initialize();
-++static int SR_finalize();
-++
-++julong os::available_memory() {
-++  return Linux::available_memory();
-++}
-++
-++julong os::Linux::available_memory() {
-++  // values in struct sysinfo are "unsigned long"
-++  struct sysinfo si;
-++  sysinfo(&si);
-++
-++  return (julong)si.freeram * si.mem_unit;
-++}
-++
-++julong os::physical_memory() {
-++  return Linux::physical_memory();
-++}
-++
-++julong os::allocatable_physical_memory(julong size) {
-++#ifdef _LP64
-++  return size;
-++#else
-++  julong result = MIN2(size, (julong)3800*M);
-++   if (!is_allocatable(result)) {
-++     // See comments under solaris for alignment considerations
-++     julong reasonable_size = (julong)2*G - 2 * os::vm_page_size();
-++     result =  MIN2(size, reasonable_size);
-++   }
-++   return result;
-++#endif // _LP64
-++}
-++
-++////////////////////////////////////////////////////////////////////////////////
-++// environment support
-++
-++bool os::getenv(const char* name, char* buf, int len) {
-++  const char* val = ::getenv(name);
-++  if (val != NULL && strlen(val) < (size_t)len) {
-++    strcpy(buf, val);
-++    return true;
-++  }
-++  if (len > 0) buf[0] = 0;  // return a null string
-++  return false;
-++}
-++
-++
-++// Return true if user is running as root.
-++
-++bool os::have_special_privileges() {
-++  static bool init = false;
-++  static bool privileges = false;
-++  if (!init) {
-++    privileges = (getuid() != geteuid()) || (getgid() != getegid());
-++    init = true;
-++  }
-++  return privileges;
-++}
-++
-++
-++#ifndef SYS_gettid
-++// i386: 224, ia64: 1105, amd64: 186, sparc 143
-++#ifdef __ia64__
-++#define SYS_gettid 1105
-++#elif __i386__
-++#define SYS_gettid 224
-++#elif __amd64__
-++#define SYS_gettid 186
-++#elif __sparc__
-++#define SYS_gettid 143
-++#else
-++#error define gettid for the arch
-++#endif
-++#endif
-++
-++// Cpu architecture string
-++#if   defined(ZERO)
-++static char cpu_arch[] = ZERO_LIBARCH;
-++#elif defined(IA64)
-++static char cpu_arch[] = "ia64";
-++#elif defined(IA32)
-++static char cpu_arch[] = "i386";
-++#elif defined(AMD64)
-++static char cpu_arch[] = "amd64";
-++#elif defined(ARM)
-++static char cpu_arch[] = "arm";
-++#elif defined(PPC)
-++static char cpu_arch[] = "ppc";
-++#elif defined(SPARC)
-++#  ifdef _LP64
-++static char cpu_arch[] = "sparcv9";
-++#  else
-++static char cpu_arch[] = "sparc";
-++#  endif
-++#else
-++#error Add appropriate cpu_arch setting
-++#endif
-++
-++
-++// pid_t gettid()
-++//
-++// Returns the kernel thread id of the currently running thread. Kernel
-++// thread id is used to access /proc.
-++//
-++// (Note that getpid() on LinuxThreads returns kernel thread id too; but
-++// on NPTL, it returns the same pid for all threads, as required by POSIX.)
-++//
-++pid_t os::Linux::gettid() {
-++  int rslt = syscall(SYS_gettid);
-++  if (rslt == -1) {
-++     // old kernel, no NPTL support
-++     return getpid();
-++  } else {
-++     return (pid_t)rslt;
-++  }
-++}
-++
-++// Most versions of linux have a bug where the number of processors are
-++// determined by looking at the /proc file system.  In a chroot environment,
-++// the system call returns 1.  This causes the VM to act as if it is
-++// a single processor and elide locking (see is_MP() call).
-++static bool unsafe_chroot_detected = false;
-++static const char *unstable_chroot_error = "/proc file system not found.\n"
-++                     "Java may be unstable running multithreaded in a chroot "
-++                     "environment on Linux when /proc filesystem is not mounted.";
-++
-++void os::Linux::initialize_system_info() {
-++  set_processor_count(sysconf(_SC_NPROCESSORS_CONF));
-++  if (processor_count() == 1) {
-++    pid_t pid = os::Linux::gettid();
-++    char fname[32];
-++    jio_snprintf(fname, sizeof(fname), "/proc/%d", pid);
-++    FILE *fp = fopen(fname, "r");
-++    if (fp == NULL) {
-++      unsafe_chroot_detected = true;
-++    } else {
-++      fclose(fp);
-++    }
-++  }
-++  _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) * (julong)sysconf(_SC_PAGESIZE);
-++  assert(processor_count() > 0, "linux error");
-++}
-++
-++void os::init_system_properties_values() {
-++//  char arch[12];
-++//  sysinfo(SI_ARCHITECTURE, arch, sizeof(arch));
-++
-++  // The next steps are taken in the product version:
-++  //
-++  // Obtain the JAVA_HOME value from the location of libjvm[_g].so.
-++  // This library should be located at:
-++  // <JAVA_HOME>/jre/lib/<arch>/{client|server}/libjvm[_g].so.
-++  //
-++  // If "/jre/lib/" appears at the right place in the path, then we
-++  // assume libjvm[_g].so is installed in a JDK and we use this path.
-++  //
-++  // Otherwise exit with message: "Could not create the Java virtual machine."
-++  //
-++  // The following extra steps are taken in the debugging version:
-++  //
-++  // If "/jre/lib/" does NOT appear at the right place in the path
-++  // instead of exit check for $JAVA_HOME environment variable.
-++  //
-++  // If it is defined and we are able to locate $JAVA_HOME/jre/lib/<arch>,
-++  // then we append a fake suffix "hotspot/libjvm[_g].so" to this path so
-++  // it looks like libjvm[_g].so is installed there
-++  // <JAVA_HOME>/jre/lib/<arch>/hotspot/libjvm[_g].so.
-++  //
-++  // Otherwise exit.
-++  //
-++  // Important note: if the location of libjvm.so changes this
-++  // code needs to be changed accordingly.
-++
-++  // The next few definitions allow the code to be verbatim:
-++#define malloc(n) (char*)NEW_C_HEAP_ARRAY(char, (n), mtInternal)
-++#define getenv(n) ::getenv(n)
-++
-++/*
-++ * See ld(1):
-++ *      The linker uses the following search paths to locate required
-++ *      shared libraries:
-++ *        1: ...
-++ *        ...
-++ *        7: The default directories, normally /lib and /usr/lib.
-++ */
-++#if defined(AMD64) || defined(_LP64) && (defined(SPARC) || defined(PPC) || defined(S390) || defined(AARCH64))
-++#define DEFAULT_LIBPATH "/usr/lib64:/lib64:/lib:/usr/lib"
-++#else
-++#define DEFAULT_LIBPATH "/lib:/usr/lib"
-++#endif
-++
-++#define EXTENSIONS_DIR  "/lib/ext"
-++#define ENDORSED_DIR    "/lib/endorsed"
-++#define REG_DIR         "/usr/java/packages"
-++
-++  {
-++    /* sysclasspath, java_home, dll_dir */
-++    {
-++        char *home_path;
-++        char *dll_path;
-++        char *pslash;
-++        char buf[MAXPATHLEN];
-++        os::jvm_path(buf, sizeof(buf));
-++
-++        // Found the full path to libjvm.so.
-++        // Now cut the path to <java_home>/jre if we can.
-++        *(strrchr(buf, '/')) = '\0';  /* get rid of /libjvm.so */
-++        pslash = strrchr(buf, '/');
-++        if (pslash != NULL)
-++            *pslash = '\0';           /* get rid of /{client|server|hotspot} */
-++        dll_path = malloc(strlen(buf) + 1);
-++        if (dll_path == NULL)
-++            return;
-++        strcpy(dll_path, buf);
-++        Arguments::set_dll_dir(dll_path);
-++
-++        if (pslash != NULL) {
-++            pslash = strrchr(buf, '/');
-++            if (pslash != NULL) {
-++                *pslash = '\0';       /* get rid of /<arch> */
-++                pslash = strrchr(buf, '/');
-++                if (pslash != NULL)
-++                    *pslash = '\0';   /* get rid of /lib */
-++            }
-++        }
-++
-++        home_path = malloc(strlen(buf) + 1);
-++        if (home_path == NULL)
-++            return;
-++        strcpy(home_path, buf);
-++        Arguments::set_java_home(home_path);
-++
-++        if (!set_boot_path('/', ':'))
-++            return;
-++    }
-++
-++    /*
-++     * Where to look for native libraries
-++     *
-++     * Note: Due to a legacy implementation, most of the library path
-++     * is set in the launcher.  This was to accomodate linking restrictions
-++     * on legacy Linux implementations (which are no longer supported).
-++     * Eventually, all the library path setting will be done here.
-++     *
-++     * However, to prevent the proliferation of improperly built native
-++     * libraries, the new path component /usr/java/packages is added here.
-++     * Eventually, all the library path setting will be done here.
-++     */
-++    {
-++        char *ld_library_path;
-++
-++        /*
-++         * Construct the invariant part of ld_library_path. Note that the
-++         * space for the colon and the trailing null are provided by the
-++         * nulls included by the sizeof operator (so actually we allocate
-++         * a byte more than necessary).
-++         */
-++        ld_library_path = (char *) malloc(sizeof(REG_DIR) + sizeof("/lib/") +
-++            strlen(cpu_arch) + sizeof(DEFAULT_LIBPATH));
-++        sprintf(ld_library_path, REG_DIR "/lib/%s:" DEFAULT_LIBPATH, cpu_arch);
-++
-++        /*
-++         * Get the user setting of LD_LIBRARY_PATH, and prepended it.  It
-++         * should always exist (until the legacy problem cited above is
-++         * addressed).
-++         */
-++        char *v = getenv("LD_LIBRARY_PATH");
-++        if (v != NULL) {
-++            char *t = ld_library_path;
-++            /* That's +1 for the colon and +1 for the trailing '\0' */
-++            ld_library_path = (char *) malloc(strlen(v) + 1 + strlen(t) + 1);
-++            sprintf(ld_library_path, "%s:%s", v, t);
-++        }
-++        Arguments::set_library_path(ld_library_path);
-++    }
-++
-++    /*
-++     * Extensions directories.
-++     *
-++     * Note that the space for the colon and the trailing null are provided
-++     * by the nulls included by the sizeof operator (so actually one byte more
-++     * than necessary is allocated).
-++     */
-++    {
-++        char *buf = malloc(strlen(Arguments::get_java_home()) +
-++            sizeof(EXTENSIONS_DIR) + sizeof(REG_DIR) + sizeof(EXTENSIONS_DIR));
-++        sprintf(buf, "%s" EXTENSIONS_DIR ":" REG_DIR EXTENSIONS_DIR,
-++            Arguments::get_java_home());
-++        Arguments::set_ext_dirs(buf);
-++    }
-++
-++    /* Endorsed standards default directory. */
-++    {
-++        char * buf;
-++        buf = malloc(strlen(Arguments::get_java_home()) + sizeof(ENDORSED_DIR));
-++        sprintf(buf, "%s" ENDORSED_DIR, Arguments::get_java_home());
-++        Arguments::set_endorsed_dirs(buf);
-++    }
-++  }
-++
-++#undef malloc
-++#undef getenv
-++#undef EXTENSIONS_DIR
-++#undef ENDORSED_DIR
-++
-++  // Done
-++  return;
-++}
-++
-++////////////////////////////////////////////////////////////////////////////////
-++// breakpoint support
-++
-++void os::breakpoint() {
-++  BREAKPOINT;
-++}
-++
-++extern "C" void breakpoint() {
-++  // use debugger to set breakpoint here
-++}
-++
-++////////////////////////////////////////////////////////////////////////////////
-++// signal support
-++
-++debug_only(static bool signal_sets_initialized = false);
-++static sigset_t unblocked_sigs, vm_sigs, allowdebug_blocked_sigs;
-++
-++bool os::Linux::is_sig_ignored(int sig) {
-++      struct sigaction oact;
-++      sigaction(sig, (struct sigaction*)NULL, &oact);
-++      void* ohlr = oact.sa_sigaction ? CAST_FROM_FN_PTR(void*,  oact.sa_sigaction)
-++                                     : CAST_FROM_FN_PTR(void*,  oact.sa_handler);
-++      if (ohlr == CAST_FROM_FN_PTR(void*, SIG_IGN))
-++           return true;
-++      else
-++           return false;
-++}
-++
-++void os::Linux::signal_sets_init() {
-++  // Should also have an assertion stating we are still single-threaded.
-++  assert(!signal_sets_initialized, "Already initialized");
-++  // Fill in signals that are necessarily unblocked for all threads in
-++  // the VM. Currently, we unblock the following signals:
-++  // SHUTDOWN{1,2,3}_SIGNAL: for shutdown hooks support (unless over-ridden
-++  //                         by -Xrs (=ReduceSignalUsage));
-++  // BREAK_SIGNAL which is unblocked only by the VM thread and blocked by all
-++  // other threads. The "ReduceSignalUsage" boolean tells us not to alter
-++  // the dispositions or masks wrt these signals.
-++  // Programs embedding the VM that want to use the above signals for their
-++  // own purposes must, at this time, use the "-Xrs" option to prevent
-++  // interference with shutdown hooks and BREAK_SIGNAL thread dumping.
-++  // (See bug 4345157, and other related bugs).
-++  // In reality, though, unblocking these signals is really a nop, since
-++  // these signals are not blocked by default.
-++  sigemptyset(&unblocked_sigs);
-++  sigemptyset(&allowdebug_blocked_sigs);
-++  sigaddset(&unblocked_sigs, SIGILL);
-++  sigaddset(&unblocked_sigs, SIGSEGV);
-++  sigaddset(&unblocked_sigs, SIGBUS);
-++  sigaddset(&unblocked_sigs, SIGFPE);
-++  sigaddset(&unblocked_sigs, SR_signum);
-++
-++  if (!ReduceSignalUsage) {
-++   if (!os::Linux::is_sig_ignored(SHUTDOWN1_SIGNAL)) {
-++      sigaddset(&unblocked_sigs, SHUTDOWN1_SIGNAL);
-++      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN1_SIGNAL);
-++   }
-++   if (!os::Linux::is_sig_ignored(SHUTDOWN2_SIGNAL)) {
-++      sigaddset(&unblocked_sigs, SHUTDOWN2_SIGNAL);
-++      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN2_SIGNAL);
-++   }
-++   if (!os::Linux::is_sig_ignored(SHUTDOWN3_SIGNAL)) {
-++      sigaddset(&unblocked_sigs, SHUTDOWN3_SIGNAL);
-++      sigaddset(&allowdebug_blocked_sigs, SHUTDOWN3_SIGNAL);
-++   }
-++  }
-++  // Fill in signals that are blocked by all but the VM thread.
-++  sigemptyset(&vm_sigs);
-++  if (!ReduceSignalUsage)
-++    sigaddset(&vm_sigs, BREAK_SIGNAL);
-++  debug_only(signal_sets_initialized = true);
-++
-++}
-++
-++// These are signals that are unblocked while a thread is running Java.
-++// (For some reason, they get blocked by default.)
-++sigset_t* os::Linux::unblocked_signals() {
-++  assert(signal_sets_initialized, "Not initialized");
-++  return &unblocked_sigs;
-++}
-++
-++// These are the signals that are blocked while a (non-VM) thread is
-++// running Java. Only the VM thread handles these signals.
-++sigset_t* os::Linux::vm_signals() {
-++  assert(signal_sets_initialized, "Not initialized");
-++  return &vm_sigs;
-++}
-++
-++// These are signals that are blocked during cond_wait to allow debugger in
-++sigset_t* os::Linux::allowdebug_blocked_signals() {
-++  assert(signal_sets_initialized, "Not initialized");
-++  return &allowdebug_blocked_sigs;
-++}
-++
-++void os::Linux::hotspot_sigmask(Thread* thread) {
-++
-++  //Save caller's signal mask before setting VM signal mask
-++  sigset_t caller_sigmask;
-++  pthread_sigmask(SIG_BLOCK, NULL, &caller_sigmask);
-++
-++  OSThread* osthread = thread->osthread();
-++  osthread->set_caller_sigmask(caller_sigmask);
-++
-++  pthread_sigmask(SIG_UNBLOCK, os::Linux::unblocked_signals(), NULL);
-++
-++  if (!ReduceSignalUsage) {
-++    if (thread->is_VM_thread()) {
-++      // Only the VM thread handles BREAK_SIGNAL ...
-++      pthread_sigmask(SIG_UNBLOCK, vm_signals(), NULL);
-++    } else {
-++      // ... all other threads block BREAK_SIGNAL
-++      pthread_sigmask(SIG_BLOCK, vm_signals(), NULL);
-++    }
-++  }
-++}
-++
-++//////////////////////////////////////////////////////////////////////////////
-++// detecting pthread library
-++
-++void os::Linux::libpthread_init() {
-++  // Save glibc and pthread version strings. Note that _CS_GNU_LIBC_VERSION
-++  // and _CS_GNU_LIBPTHREAD_VERSION are supported in glibc >= 2.3.2. Use a
-++  // generic name for earlier versions.
-++  // Define macros here so we can build HotSpot on old systems.
-++# ifndef _CS_GNU_LIBC_VERSION
-++# define _CS_GNU_LIBC_VERSION 2
-++# endif
-++# ifndef _CS_GNU_LIBPTHREAD_VERSION
-++# define _CS_GNU_LIBPTHREAD_VERSION 3
-++# endif
-++
-++  size_t n = confstr(_CS_GNU_LIBC_VERSION, NULL, 0);
-++  if (n > 0) {
-++     char *str = (char *)malloc(n, mtInternal);
-++     confstr(_CS_GNU_LIBC_VERSION, str, n);
-++     os::Linux::set_glibc_version(str);
-++  } else {
-++     // _CS_GNU_LIBC_VERSION is not supported, try gnu_get_libc_version()
-++     static char _gnu_libc_version[32];
-++     jio_snprintf(_gnu_libc_version, sizeof(_gnu_libc_version),
-++              "glibc %s %s", gnu_get_libc_version(), gnu_get_libc_release());
-++     os::Linux::set_glibc_version(_gnu_libc_version);
-++  }
-++
-++  n = confstr(_CS_GNU_LIBPTHREAD_VERSION, NULL, 0);
-++  if (n > 0) {
-++     char *str = (char *)malloc(n, mtInternal);
-++     confstr(_CS_GNU_LIBPTHREAD_VERSION, str, n);
-++     // Vanilla RH-9 (glibc 2.3.2) has a bug that confstr() always tells
-++     // us "NPTL-0.29" even we are running with LinuxThreads. Check if this
-++     // is the case. LinuxThreads has a hard limit on max number of threads.
-++     // So sysconf(_SC_THREAD_THREADS_MAX) will return a positive value.
-++     // On the other hand, NPTL does not have such a limit, sysconf()
-++     // will return -1 and errno is not changed. Check if it is really NPTL.
-++     if (strcmp(os::Linux::glibc_version(), "glibc 2.3.2") == 0 &&
-++         strstr(str, "NPTL") &&
-++         sysconf(_SC_THREAD_THREADS_MAX) > 0) {
-++       free(str);
-++       os::Linux::set_libpthread_version("linuxthreads");
-++     } else {
-++       os::Linux::set_libpthread_version(str);
-++     }
-++  } else {
-++    // glibc before 2.3.2 only has LinuxThreads.
-++    os::Linux::set_libpthread_version("linuxthreads");
-++  }
-++
-++  if (strstr(libpthread_version(), "NPTL")) {
-++     os::Linux::set_is_NPTL();
-++  } else {
-++     os::Linux::set_is_LinuxThreads();
-++  }
-++
-++  // LinuxThreads have two flavors: floating-stack mode, which allows variable
-++  // stack size; and fixed-stack mode. NPTL is always floating-stack.
-++  if (os::Linux::is_NPTL() || os::Linux::supports_variable_stack_size()) {
-++     os::Linux::set_is_floating_stack();
-++  }
-++}
-++
-++/////////////////////////////////////////////////////////////////////////////
-++// thread stack
-++
-++// Force Linux kernel to expand current thread stack. If "bottom" is close
-++// to the stack guard, caller should block all signals.
-++//
-++// MAP_GROWSDOWN:
-++//   A special mmap() flag that is used to implement thread stacks. It tells
-++//   kernel that the memory region should extend downwards when needed. This
-++//   allows early versions of LinuxThreads to only mmap the first few pages
-++//   when creating a new thread. Linux kernel will automatically expand thread
-++//   stack as needed (on page faults).
-++//
-++//   However, because the memory region of a MAP_GROWSDOWN stack can grow on
-++//   demand, if a page fault happens outside an already mapped MAP_GROWSDOWN
-++//   region, it's hard to tell if the fault is due to a legitimate stack
-++//   access or because of reading/writing non-exist memory (e.g. buffer
-++//   overrun). As a rule, if the fault happens below current stack pointer,
-++//   Linux kernel does not expand stack, instead a SIGSEGV is sent to the
-++//   application (see Linux kernel fault.c).
-++//
-++//   This Linux feature can cause SIGSEGV when VM bangs thread stack for
-++//   stack overflow detection.
-++//
-++//   Newer version of LinuxThreads (since glibc-2.2, or, RH-7.x) and NPTL do
-++//   not use this flag. However, the stack of initial thread is not created
-++//   by pthread, it is still MAP_GROWSDOWN. Also it's possible (though
-++//   unlikely) that user code can create a thread with MAP_GROWSDOWN stack
-++//   and then attach the thread to JVM.
-++//
-++// To get around the problem and allow stack banging on Linux, we need to
-++// manually expand thread stack after receiving the SIGSEGV.
-++//
-++// There are two ways to expand thread stack to address "bottom", we used
-++// both of them in JVM before 1.5:
-++//   1. adjust stack pointer first so that it is below "bottom", and then
-++//      touch "bottom"
-++//   2. mmap() the page in question
-++//
-++// Now alternate signal stack is gone, it's harder to use 2. For instance,
-++// if current sp is already near the lower end of page 101, and we need to
-++// call mmap() to map page 100, it is possible that part of the mmap() frame
-++// will be placed in page 100. When page 100 is mapped, it is zero-filled.
-++// That will destroy the mmap() frame and cause VM to crash.
-++//
-++// The following code works by adjusting sp first, then accessing the "bottom"
-++// page to force a page fault. Linux kernel will then automatically expand the
-++// stack mapping.
-++//
-++// _expand_stack_to() assumes its frame size is less than page size, which
-++// should always be true if the function is not inlined.
-++
-++#if __GNUC__ < 3    // gcc 2.x does not support noinline attribute
-++#define NOINLINE
-++#else
-++#define NOINLINE __attribute__ ((noinline))
-++#endif
-++
-++static void _expand_stack_to(address bottom) NOINLINE;
-++
-++static void _expand_stack_to(address bottom) {
-++  address sp;
-++  size_t size;
-++  volatile char *p;
-++
-++  // Adjust bottom to point to the largest address within the same page, it
-++  // gives us a one-page buffer if alloca() allocates slightly more memory.
-++  bottom = (address)align_size_down((uintptr_t)bottom, os::Linux::page_size());
-++  bottom += os::Linux::page_size() - 1;
-++
-++  // sp might be slightly above current stack pointer; if that's the case, we
-++  // will alloca() a little more space than necessary, which is OK. Don't use
-++  // os::current_stack_pointer(), as its result can be slightly below current
-++  // stack pointer, causing us to not alloca enough to reach "bottom".
-++  sp = (address)&sp;
-++
-++  if (sp > bottom) {
-++    size = sp - bottom;
-++    p = (volatile char *)alloca(size);
-++    assert(p != NULL && p <= (volatile char *)bottom, "alloca problem?");
-++    p[0] = '\0';
-++  }
-++}
-++
-++bool os::Linux::manually_expand_stack(JavaThread * t, address addr) {
-++  assert(t!=NULL, "just checking");
-++  assert(t->osthread()->expanding_stack(), "expand should be set");
-++  assert(t->stack_base() != NULL, "stack_base was not initialized");
-++
-++  if (addr <  t->stack_base() && addr >= t->stack_yellow_zone_base()) {
-++    sigset_t mask_all, old_sigset;
-++    sigfillset(&mask_all);
-++    pthread_sigmask(SIG_SETMASK, &mask_all, &old_sigset);
-++    _expand_stack_to(addr);
-++    pthread_sigmask(SIG_SETMASK, &old_sigset, NULL);
-++    return true;
-++  }
-++  return false;
-++}
-++
-++//////////////////////////////////////////////////////////////////////////////
-++// create new thread
-++
-++static address highest_vm_reserved_address();
-++
-++// check if it's safe to start a new thread
-++static bool _thread_safety_check(Thread* thread) {
-++  if (os::Linux::is_LinuxThreads() && !os::Linux::is_floating_stack()) {
-++    // Fixed stack LinuxThreads (SuSE Linux/x86, and some versions of Redhat)
-++    //   Heap is mmap'ed at lower end of memory space. Thread stacks are
-++    //   allocated (MAP_FIXED) from high address space. Every thread stack
-++    //   occupies a fixed size slot (usually 2Mbytes, but user can change
-++    //   it to other values if they rebuild LinuxThreads).
-++    //
-++    // Problem with MAP_FIXED is that mmap() can still succeed even part of
-++    // the memory region has already been mmap'ed. That means if we have too
-++    // many threads and/or very large heap, eventually thread stack will
-++    // collide with heap.
-++    //
-++    // Here we try to prevent heap/stack collision by comparing current
-++    // stack bottom with the highest address that has been mmap'ed by JVM
-++    // plus a safety margin for memory maps created by native code.
-++    //
-++    // This feature can be disabled by setting ThreadSafetyMargin to 0
-++    //
-++    if (ThreadSafetyMargin > 0) {
-++      address stack_bottom = os::current_stack_base() - os::current_stack_size();
-++
-++      // not safe if our stack extends below the safety margin
-++      return stack_bottom - ThreadSafetyMargin >= highest_vm_reserved_address();
-++    } else {
-++      return true;
-++    }
-++  } else {
-++    // Floating stack LinuxThreads or NPTL:
-++    //   Unlike fixed stack LinuxThreads, thread stacks are not MAP_FIXED. When
-++    //   there's not enough space left, pthread_create() will fail. If we come
-++    //   here, that means enough space has been reserved for stack.
-++    return true;
-++  }
-++}
-++
-++// Thread start routine for all newly created threads
-++static void *java_start(Thread *thread) {
-++  // Try to randomize the cache line index of hot stack frames.
-++  // This helps when threads of the same stack traces evict each other's
-++  // cache lines. The threads can be either from the same JVM instance, or
-++  // from different JVM instances. The benefit is especially true for
-++  // processors with hyperthreading technology.
-++  static int counter = 0;
-++  int pid = os::current_process_id();
-++  alloca(((pid ^ counter++) & 7) * 128);
-++
-++  ThreadLocalStorage::set_thread(thread);
-++
-++  OSThread* osthread = thread->osthread();
-++  Monitor* sync = osthread->startThread_lock();
-++
-++  // non floating stack LinuxThreads needs extra check, see above
-++  if (!_thread_safety_check(thread)) {
-++    // notify parent thread
-++    MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag);
-++    osthread->set_state(ZOMBIE);
-++    sync->notify_all();
-++    return NULL;
-++  }
-++
-++  // thread_id is kernel thread id (similar to Solaris LWP id)
-++  osthread->set_thread_id(os::Linux::gettid());
-++
-++  if (UseNUMA) {
-++    int lgrp_id = os::numa_get_group_id();
-++    if (lgrp_id != -1) {
-++      thread->set_lgrp_id(lgrp_id);
-++    }
-++  }
-++  // initialize signal mask for this thread
-++  os::Linux::hotspot_sigmask(thread);
-++
-++  // initialize floating point control register
-++  os::Linux::init_thread_fpu_state();
-++
-++  // handshaking with parent thread
-++  {
-++    MutexLockerEx ml(sync, Mutex::_no_safepoint_check_flag);
-++
-++    // notify parent thread
-++    osthread->set_state(INITIALIZED);
-++    sync->notify_all();
-++
-++    // wait until os::start_thread()
-++    while (osthread->get_state() == INITIALIZED) {
-++      sync->wait(Mutex::_no_safepoint_check_flag);
-++    }
-++  }
-++
-++  // call one more level start routine
-++  thread->run();
-++
-++  return 0;
-++}
-++
-++bool os::create_thread(Thread* thread, ThreadType thr_type, size_t stack_size) {
-++  assert(thread->osthread() == NULL, "caller responsible");
-++
-++  // Allocate the OSThread object
-++  OSThread* osthread = new OSThread(NULL, NULL);
-++  if (osthread == NULL) {
-++    return false;
-++  }
-++
-++  // set the correct thread state
-++  osthread->set_thread_type(thr_type);
-++