Add support for the QNX operating system.

This patch contains contributions from the following members of the
BlackBerry Web Technologies team:

Eli Fidler <efidler@blackberry.com>
Konrad Piascik <kpiascik@blackberry.com>
Jeff Rogers <jrogers@blackberry.com>
Cosmin Truta <ctruta@blackberry.com>
Peter Wang <peter.wang@torchmobile.com.cn>
Xiaobo Wang <xiaobwang@blackberry.com>
Ming Xie <mxie@blackberry.com>
Leo Yang <leoyang@blackberry.com>

R=bmeurer@chromium.org, jkummerow@chromium.org

Review URL: https://codereview.chromium.org/61153009

Patch from Cosmin Truta <ctruta@blackberry.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18430 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

AUTHORS

@@ -11,6 +11,7 @@ Igalia, S.L.
 Joyent, Inc.
 Bloomberg Finance L.P.
 NVIDIA Corporation
+BlackBerry Limited
 
 Akinori MUSHA <knu@FreeBSD.org>
 Alexander Botero-Lowry <alexbl@FreeBSD.org>

build/standalone.gypi

@@ -45,7 +45,7 @@
         'variables': {
           'conditions': [
             ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or \
-               OS=="netbsd" or OS=="mac"', {
+               OS=="netbsd" or OS=="mac" or OS=="qnx"', {
               # This handles the Unix platforms we generally deal with.
               # Anything else gets passed through, which probably won't work
               # very well; such hosts should pass an explicit target_arch
@@ -99,7 +99,7 @@
       ['(v8_target_arch=="arm" and host_arch!="arm") or \
         (v8_target_arch=="mipsel" and host_arch!="mipsel") or \
         (v8_target_arch=="x64" and host_arch!="x64") or \
-        (OS=="android")', {
+        (OS=="android" or OS=="qnx")', {
         'want_separate_host_toolset': 1,
       }, {
         'want_separate_host_toolset': 0,
@@ -186,6 +186,32 @@
     }],
     # 'OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris"
     #  or OS=="netbsd"'
+    ['OS=="qnx"', {
+      'target_defaults': {
+        'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
+                    '-fno-exceptions' ],
+        'cflags_cc': [ '-Wnon-virtual-dtor', '-fno-rtti' ],
+        'conditions': [
+          [ 'visibility=="hidden"', {
+            'cflags': [ '-fvisibility=hidden' ],
+          }],
+          [ 'component=="shared_library"', {
+            'cflags': [ '-fPIC' ],
+          }],
+        ],
+        'target_conditions': [
+          [ '_toolset=="host" and host_os=="linux"', {
+            'cflags': [ '-pthread' ],
+            'ldflags': [ '-pthread' ],
+            'libraries': [ '-lrt' ],
+          }],
+          [ '_toolset=="target"', {
+            'cflags': [ '-Wno-psabi' ],
+            'libraries': [ '-lbacktrace', '-lsocket', '-lm' ],
+          }],
+        ],
+      },
+    }],  # OS=="qnx"
     ['OS=="win"', {
       'target_defaults': {
         'defines': [

build/toolchain.gypi

@@ -357,7 +357,7 @@
         },
       }],
       ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
-         or OS=="netbsd"', {
+         or OS=="netbsd" or OS=="qnx"', {
         'conditions': [
           [ 'v8_no_strict_aliasing==1', {
             'cflags': [ '-fno-strict-aliasing' ],
@@ -368,7 +368,7 @@
         'defines': [ '__C99FEATURES__=1' ],  # isinf() etc.
       }],
       ['(OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="solaris" \
-         or OS=="netbsd" or OS=="mac" or OS=="android") and \
+         or OS=="netbsd" or OS=="mac" or OS=="android" or OS=="qnx") and \
         (v8_target_arch=="arm" or v8_target_arch=="ia32" or \
          v8_target_arch=="mipsel")', {
         # Check whether the host compiler and target compiler support the
@@ -390,7 +390,7 @@
               'clang%': 0,
             },
             'conditions': [
-              ['(OS!="android" or clang==1) and \
+              ['((OS!="android" and OS!="qnx") or clang==1) and \
                 nacl_target_arch!="nacl_x64"', {
                 'cflags': [ '<(m32flag)' ],
                 'ldflags': [ '<(m32flag)' ],
@@ -504,7 +504,8 @@
           },
         },
         'conditions': [
-          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd"', {
+          ['OS=="linux" or OS=="freebsd" or OS=="openbsd" or OS=="netbsd" or \
+            OS=="qnx"', {
             'cflags': [ '-Wall', '<(werror)', '-W', '-Wno-unused-parameter',
                         '-Wnon-virtual-dtor', '-Woverloaded-virtual',
                         '<(wno_array_bounds)' ],

include/v8config.h

@@ -88,6 +88,7 @@
 //  V8_OS_NETBSD        - NetBSD
 //  V8_OS_OPENBSD       - OpenBSD
 //  V8_OS_POSIX         - POSIX compatible (mostly everything except Windows)
+//  V8_OS_QNX           - QNX Neutrino
 //  V8_OS_SOLARIS       - Sun Solaris and OpenSolaris
 //  V8_OS_WIN           - Microsoft Windows
 
@@ -127,6 +128,9 @@
 # define V8_OS_BSD 1
 # define V8_OS_OPENBSD 1
 # define V8_OS_POSIX 1
+#elif defined(__QNXNTO__)
+# define V8_OS_POSIX 1
+# define V8_OS_QNX 1
 #elif defined(_WIN32)
 # define V8_OS_WIN 1
 #endif

src/arm/cpu-arm.cc

@@ -27,8 +27,13 @@
 
 // CPU specific code for arm independent of OS goes here.
 #ifdef __arm__
+#ifdef __QNXNTO__
+#include <sys/mman.h>  // for cache flushing.
+#undef MAP_TYPE
+#else
 #include <sys/syscall.h>  // for cache flushing.
 #endif
+#endif
 
 #include "v8.h"
 
@@ -57,13 +62,15 @@ void CPU::FlushICache(void* start, size_t size) {
     return;
   }
 
-#if defined (USE_SIMULATOR)
+#if defined(USE_SIMULATOR)
   // Not generating ARM instructions for C-code. This means that we are
   // building an ARM emulator based target.  We should notify the simulator
   // that the Icache was flushed.
   // None of this code ends up in the snapshot so there are no issues
   // around whether or not to generate the code when building snapshots.
   Simulator::FlushICache(Isolate::Current()->simulator_i_cache(), start, size);
+#elif V8_OS_QNX
+  msync(start, size, MS_SYNC | MS_INVALIDATE_ICACHE);
 #else
   // Ideally, we would call
   //   syscall(__ARM_NR_cacheflush, start,

src/checks.cc

@@ -30,6 +30,8 @@
 #if V8_LIBC_GLIBC || V8_OS_BSD
 # include <cxxabi.h>
 # include <execinfo.h>
+#elif V8_OS_QNX
+# include <backtrace.h>
 #endif  // V8_LIBC_GLIBC || V8_OS_BSD
 #include <stdio.h>
 
@@ -64,6 +66,26 @@ static V8_INLINE void DumpBacktrace() {
     }
   }
   free(symbols);
+#elif V8_OS_QNX
+  char out[1024];
+  bt_accessor_t acc;
+  bt_memmap_t memmap;
+  bt_init_accessor(&acc, BT_SELF);
+  bt_load_memmap(&acc, &memmap);
+  bt_sprn_memmap(&memmap, out, sizeof(out));
+  i::OS::PrintError(out);
+  bt_addr_t trace[100];
+  int size = bt_get_backtrace(&acc, trace, ARRAY_SIZE(trace));
+  i::OS::PrintError("\n==== C stack trace ===============================\n\n");
+  if (size == 0) {
+    i::OS::PrintError("(empty)\n");
+  } else {
+    bt_sprnf_addrs(&memmap, trace, size, const_cast<char*>("%a\n"),
+                   out, sizeof(out), NULL);
+    i::OS::PrintError(out);
+  }
+  bt_unload_memmap(&memmap);
+  bt_release_accessor(&acc);
 #endif  // V8_LIBC_GLIBC || V8_OS_BSD
 }
 

src/cpu.cc

@@ -33,6 +33,9 @@
 #if V8_OS_POSIX
 #include <unistd.h>  // sysconf()
 #endif
+#if V8_OS_QNX
+#include <sys/syspage.h>  // cpuinfo
+#endif
 
 #include <algorithm>
 #include <cctype>
@@ -78,6 +81,8 @@ static V8_INLINE void __cpuid(int cpu_info[4], int info_type) {
 
 #elif V8_HOST_ARCH_ARM || V8_HOST_ARCH_MIPS
 
+#if V8_OS_LINUX
+
 #if V8_HOST_ARCH_ARM
 
 // See <uapi/asm/hwcap.h> kernel header.
@@ -249,6 +254,8 @@ static bool HasListItem(const char* list, const char* item) {
   return false;
 }
 
+#endif  // V8_OS_LINUX
+
 #endif  // V8_HOST_ARCH_IA32 || V8_HOST_ARCH_X64
 
 CPU::CPU() : stepping_(0),
@@ -328,7 +335,11 @@ CPU::CPU() : stepping_(0),
     has_sahf_ = (cpu_info[2] & 0x00000001) != 0;
 #endif
   }
+
 #elif V8_HOST_ARCH_ARM
+
+#if V8_OS_LINUX
+
   CPUInfo cpu_info;
 
   // Extract implementor from the "CPU implementer" field.
@@ -438,7 +449,34 @@ CPU::CPU() : stepping_(0),
 
   // We don't support any FPUs other than VFP.
   has_fpu_ = has_vfp_;
+
+#elif V8_OS_QNX
+
+  uint32_t cpu_flags = SYSPAGE_ENTRY(cpuinfo)->flags;
+  if (cpu_flags & ARM_CPU_FLAG_V7) {
+    architecture_ = 7;
+    has_thumbee_ = true;
+  } else if (cpu_flags & ARM_CPU_FLAG_V6) {
+    architecture_ = 6;
+    // QNX doesn't say if ThumbEE is available.
+    // Assume false for the architectures older than ARMv7.
+  }
+  ASSERT(architecture_ >= 6);
+  has_fpu_ = (cpu_flags & CPU_FLAG_FPU) != 0;
+  has_vfp_ = has_fpu_;
+  if (cpu_flags & ARM_CPU_FLAG_NEON) {
+    has_neon_ = true;
+    has_vfp3_ = has_vfp_;
+#ifdef ARM_CPU_FLAG_VFP_D32
+    has_vfp3_d32_ = (cpu_flags & ARM_CPU_FLAG_VFP_D32) != 0;
+#endif
+  }
+  has_idiva_ = (cpu_flags & ARM_CPU_FLAG_IDIV) != 0;
+
+#endif  // V8_OS_LINUX
+
 #elif V8_HOST_ARCH_MIPS
+
   // Simple detection of FPU at runtime for Linux.
   // It is based on /proc/cpuinfo, which reveals hardware configuration
   // to user-space applications.  According to MIPS (early 2010), no similar
@@ -448,6 +486,7 @@ CPU::CPU() : stepping_(0),
   char* cpu_model = cpu_info.ExtractField("cpu model");
   has_fpu_ = HasListItem(cpu_model, "FPU");
   delete[] cpu_model;
+
 #endif
 }
 

src/d8.gyp

@@ -66,7 +66,8 @@
               ],
             }],
             ['(OS=="linux" or OS=="mac" or OS=="freebsd" or OS=="netbsd" \
-               or OS=="openbsd" or OS=="solaris" or OS=="android")', {
+               or OS=="openbsd" or OS=="solaris" or OS=="android" \
+               or OS=="qnx")', {
               'sources': [ 'd8-posix.cc', ]
             }],
             [ 'OS=="win"', {

src/platform-posix.cc

@@ -130,6 +130,13 @@ uint64_t OS::TotalPhysicalMemory() {
     return 0;
   }
   return static_cast<uint64_t>(memory_info.dwTotalPhys);
+#elif V8_OS_QNX
+  struct stat stat_buf;
+  if (stat("/proc", &stat_buf) != 0) {
+    UNREACHABLE();
+    return 0;
+  }
+  return static_cast<uint64_t>(stat_buf.st_size);
 #else
   intptr_t pages = sysconf(_SC_PHYS_PAGES);
   intptr_t page_size = sysconf(_SC_PAGESIZE);
@@ -247,7 +254,7 @@ void* OS::GetRandomMmapAddr() {
 
 
 size_t OS::AllocateAlignment() {
-  return getpagesize();
+  return static_cast<size_t>(sysconf(_SC_PAGESIZE));
 }
 
 

src/platform.h

@@ -59,6 +59,10 @@ int signbit(double x);
 # endif
 #endif
 
+#if V8_OS_QNX
+#include "qnx-math.h"
+#endif
+
 // Microsoft Visual C++ specific stuff.
 #if V8_CC_MSVC
 

src/qnx-math.h

+// Copyright 2013 the V8 project authors. 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 V8_QNX_MATH_H_
+#define V8_QNX_MATH_H_
+
+#include <cmath>
+
+#undef fpclassify
+#undef isfinite
+#undef isinf
+#undef isnan
+#undef isnormal
+#undef signbit
+
+using std::lrint;
+
+#endif  // V8_QNX_MATH_H_

src/sampler.cc

@@ -35,7 +35,10 @@
 #include <pthread.h>
 #include <signal.h>
 #include <sys/time.h>
+
+#if !V8_OS_QNX
 #include <sys/syscall.h>
+#endif
 
 #if V8_OS_MACOSX
 #include <mach/mach.h>
@@ -45,6 +48,7 @@
     && !V8_OS_OPENBSD
 #include <ucontext.h>
 #endif
+
 #include <unistd.h>
 
 // GLibc on ARM defines mcontext_t has a typedef for 'struct sigcontext'.
@@ -266,7 +270,11 @@ class SignalHandler : public AllStatic {
     struct sigaction sa;
     sa.sa_sigaction = &HandleProfilerSignal;
     sigemptyset(&sa.sa_mask);
+#if V8_OS_QNX
+    sa.sa_flags = SA_SIGINFO;
+#else
     sa.sa_flags = SA_RESTART | SA_SIGINFO;
+#endif
     signal_handler_installed_ =
         (sigaction(SIGPROF, &sa, &old_signal_handler_) == 0);
   }
@@ -415,7 +423,17 @@ void SignalHandler::HandleProfilerSignal(int signal, siginfo_t* info,
   state.pc = reinterpret_cast<Address>(mcontext.gregs[REG_PC]);
   state.sp = reinterpret_cast<Address>(mcontext.gregs[REG_SP]);
   state.fp = reinterpret_cast<Address>(mcontext.gregs[REG_FP]);
-#endif  // V8_OS_SOLARIS
+#elif V8_OS_QNX
+#if V8_HOST_ARCH_IA32
+  state.pc = reinterpret_cast<Address>(mcontext.cpu.eip);
+  state.sp = reinterpret_cast<Address>(mcontext.cpu.esp);
+  state.fp = reinterpret_cast<Address>(mcontext.cpu.ebp);
+#elif V8_HOST_ARCH_ARM
+  state.pc = reinterpret_cast<Address>(mcontext.cpu.gpr[ARM_REG_PC]);
+  state.sp = reinterpret_cast<Address>(mcontext.cpu.gpr[ARM_REG_SP]);
+  state.fp = reinterpret_cast<Address>(mcontext.cpu.gpr[ARM_REG_FP]);
+#endif  // V8_HOST_ARCH_*
+#endif  // V8_OS_QNX
 #endif  // USE_SIMULATOR
   sampler->SampleStack(state);
 #endif  // V8_OS_NACL

test/cctest/cctest.gyp

@@ -155,7 +155,7 @@
             'test-macro-assembler-mips.cc'
           ],
         }],
-        [ 'OS=="linux"', {
+        [ 'OS=="linux" or OS=="qnx"', {
           'sources': [
             'test-platform-linux.cc',
           ],

test/cctest/test-time.cc

@@ -29,6 +29,10 @@
 
 #include "v8.h"
 
+#if V8_OS_POSIX
+#include <sys/time.h>  // NOLINT
+#endif
+
 #include "cctest.h"
 #if V8_OS_WIN
 #include "win32-headers.h"

tools/gyp/v8.gyp

@@ -811,6 +811,43 @@
             ],
           },
         ],
+        ['OS=="qnx"', {
+            'link_settings': {
+              'target_conditions': [
+                ['_toolset=="host" and host_os=="linux"', {
+                  'libraries': [
+                    '-lrt'
+                  ],
+                }],
+                ['_toolset=="target"', {
+                  'libraries': [
+                    '-lbacktrace', '-lsocket'
+                  ],
+                }],
+              ],
+            },
+            'sources': [
+              '../../src/platform-posix.cc',
+            ],
+            'target_conditions': [
+              ['_toolset=="host" and host_os=="linux"', {
+                'sources': [
+                  '../../src/platform-linux.cc'
+                ],
+              }],
+              ['_toolset=="host" and host_os=="mac"', {
+                'sources': [
+                  '../../src/platform-macos.cc'
+                ],
+              }],
+              ['_toolset=="target"', {
+                'sources': [
+                  '../../src/platform-qnx.cc'
+                ],
+              }],
+            ],
+          },
+        ],
         ['OS=="freebsd"', {
             'link_settings': {
               'libraries': [