Add support for building on ARM

deps/v8/src/arm/assembler-arm.cc

@@ -50,6 +50,35 @@ bool CpuFeatures::initialized_ = false;
 unsigned CpuFeatures::supported_ = 0;
 unsigned CpuFeatures::found_by_runtime_probing_ = 0;
 
+#ifdef __arm__
+
+bool OS::ArmCpuHasFeature(CpuFeature feature) {
+  return false;
+}
+
+CpuImplementer OS::GetCpuImplementer() {
+  static bool use_cached_value = false;
+  static CpuImplementer cached_value = UNKNOWN_IMPLEMENTER;
+  if (use_cached_value) {
+    return cached_value;
+  }
+  cached_value = ARM_IMPLEMENTER;
+
+  use_cached_value = true;
+  return cached_value;
+}
+
+
+bool OS::ArmUsingHardFloat() {
+#if defined(__ARM_PCS_VFP)
+  return true;
+#else
+  return false;
+#endif
+}
+
+#endif  // def __arm__
+
 
 // Get the CPU features enabled by the build. For cross compilation the
 // preprocessor symbols CAN_USE_ARMV7_INSTRUCTIONS and CAN_USE_VFP3_INSTRUCTIONS
@@ -749,7 +778,7 @@ static bool fits_shifter(uint32_t imm32,
                          Instr* instr) {
   // imm32 must be unsigned.
   for (int rot = 0; rot < 16; rot++) {
-    uint32_t imm8 = (imm32 << 2*rot) | (imm32 >> (32 - 2*rot));
+    uint32_t imm8 = rot == 0 ? imm32 : ((imm32 << 2*rot) | (imm32 >> (32 - 2*rot)));
     if ((imm8 <= 0xff)) {
       *rotate_imm = rot;
       *immed_8 = imm8;

deps/v8/src/arm/cpu-arm.cc

@@ -64,7 +64,7 @@ void CPU::FlushICache(void* start, size_t size) {
   // 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);
-#else
+#elif defined(__linux__)
   // Ideally, we would call
   //   syscall(__ARM_NR_cacheflush, start,
   //           reinterpret_cast<intptr_t>(start) + size, 0);
@@ -103,6 +103,10 @@ void CPU::FlushICache(void* start, size_t size) {
         : "0" (beg), "r" (end), "r" (flg), "r" (__ARM_NR_cacheflush)
         : "r3");
   #endif
+#elif defined(__FreeBSD__)
+  __clear_cache(start, reinterpret_cast<char*>(start) + size);
+#else
+#error "No cache flush implementation on this platform"
 #endif
 }
 

deps/v8/src/atomicops.h

@@ -160,8 +160,10 @@ Atomic64 Release_Load(volatile const Atomic64* ptr);
 #elif defined(__GNUC__) && \
   (defined(V8_HOST_ARCH_IA32) || defined(V8_HOST_ARCH_X64))
 #include "atomicops_internals_x86_gcc.h"
-#elif defined(__GNUC__) && defined(V8_HOST_ARCH_ARM)
+#elif defined(__GNUC__) && defined(__linux__) && defined(V8_HOST_ARCH_ARM)
 #include "atomicops_internals_arm_gcc.h"
+#elif defined(__FreeBSD__) && defined(V8_HOST_ARCH_ARM)
+#include "atomicops_internals_generic_gcc.h"
 #elif defined(__GNUC__) && defined(V8_HOST_ARCH_MIPS)
 #include "atomicops_internals_mips_gcc.h"
 #else

deps/v8/src/atomicops_internals_generic_gcc.h

@@ -0,0 +1,135 @@
+// Copyright 2013 Red Hat 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 Red Hat 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.
+
+// This file is an internal atomic implementation, use atomicops.h instead.
+
+#ifndef V8_ATOMICOPS_INTERNALS_ARM_GCC_H_
+#define V8_ATOMICOPS_INTERNALS_ARM_GCC_H_
+
+namespace v8 {
+namespace internal {
+
+inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
+                                         Atomic32 old_value,
+                                         Atomic32 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+  return old_value;
+}
+
+inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
+                                         Atomic32 new_value) {
+  return __atomic_exchange_n(ptr, new_value, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
+                                          Atomic32 increment) {
+  return __atomic_add_fetch(ptr, increment, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
+                                        Atomic32 increment) {
+  return __atomic_add_fetch(ptr, increment, __ATOMIC_SEQ_CST);
+}
+
+inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
+                                       Atomic32 old_value,
+                                       Atomic32 new_value) {
+  __atomic_compare_exchange(ptr, &old_value, &new_value, true,
+                            __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
+                                       Atomic32 old_value,
+                                       Atomic32 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELEASE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
+}
+
+inline void MemoryBarrier() {
+  __sync_synchronize();
+}
+
+inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_SEQ_CST);
+}
+
+inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
+}
+
+inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_RELAXED);
+}
+
+inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
+}
+
+inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
+}
+
+#ifdef __LP64__
+
+inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
+  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
+}
+
+inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
+  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
+}
+
+inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
+                                       Atomic64 old_value,
+                                       Atomic64 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
+  return old_value;
+}
+
+inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
+                                         Atomic64 old_value,
+                                         Atomic64 new_value) {
+  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
+                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
+  return old_value;
+}
+
+#endif // defined(__LP64__)
+
+}  // namespace internal
+}  // v8
+
+#endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_

deps/v8/src/platform-freebsd.cc

@@ -343,7 +343,7 @@ VirtualMemory::VirtualMemory(size_t size, size_t alignment)
   void* reservation = mmap(OS::GetRandomMmapAddr(),
                            request_size,
                            PROT_NONE,
-                           MAP_PRIVATE | MAP_ANON | MAP_NORESERVE,
+                           MAP_PRIVATE | MAP_ANON,
                            kMmapFd,
                            kMmapFdOffset);
   if (reservation == MAP_FAILED) return;
@@ -415,7 +415,7 @@ void* VirtualMemory::ReserveRegion(size_t size) {
   void* result = mmap(OS::GetRandomMmapAddr(),
                       size,
                       PROT_NONE,
-                      MAP_PRIVATE | MAP_ANON | MAP_NORESERVE,
+                      MAP_PRIVATE | MAP_ANON,
                       kMmapFd,
                       kMmapFdOffset);
 
@@ -445,7 +445,7 @@ bool VirtualMemory::UncommitRegion(void* base, size_t size) {
   return mmap(base,
               size,
               PROT_NONE,
-              MAP_PRIVATE | MAP_ANON | MAP_NORESERVE | MAP_FIXED,
+              MAP_PRIVATE | MAP_ANON | MAP_FIXED,
               kMmapFd,
               kMmapFdOffset) != MAP_FAILED;
 }
@@ -690,9 +690,9 @@ static void ProfilerSignalHandler(int signal, siginfo_t* info, void* context) {
   sample->sp = reinterpret_cast<Address>(mcontext.mc_rsp);
   sample->fp = reinterpret_cast<Address>(mcontext.mc_rbp);
 #elif V8_HOST_ARCH_ARM
-  sample->pc = reinterpret_cast<Address>(mcontext.mc_r15);
-  sample->sp = reinterpret_cast<Address>(mcontext.mc_r13);
-  sample->fp = reinterpret_cast<Address>(mcontext.mc_r11);
+  sample->pc = reinterpret_cast<Address>(mcontext.__gregs[_REG_PC]);
+  sample->sp = reinterpret_cast<Address>(mcontext.__gregs[_REG_SP]);
+  sample->fp = reinterpret_cast<Address>(mcontext.__gregs[_REG_FP]);
 #endif
   sampler->SampleStack(sample);
   sampler->Tick(sample);