Adds targets for simarmv6 and armv6

runtime/vm/cpu_arm.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/cpuinfo.h"
@@ skipping 38 matching lines @@
 // Before ARMv6, that is only for ARMv5TE, unaligned accesses will cause a
 // crash. This includes the ldrd and strd instructions, which must use addresses
 // that are 8-byte aligned. Since we don't always guarantee that for our uses
 // of ldrd and strd, these instructions are emulated with two load or store
 // instructions on ARMv5TE. On ARMv6 and on, we assume that the kernel is
 // set up to fixup unaligned accesses. This can be verified by checking
 // /proc/cpu/alignment on modern Linux systems.
 
 namespace dart {
 
-// TODO(zra): Add a target for ARMv6.
 #if defined(TARGET_ARCH_ARM_5TE)
 DEFINE_FLAG(bool, use_vfp, false, "Use vfp instructions if supported");
 DEFINE_FLAG(bool, use_neon, false, "Use neon instructions if supported");
 DEFINE_FLAG(bool, use_integer_division, false,
             "Use integer division instruction if supported");
+#elif defined(TARGET_ARCH_ARM_6)
+DEFINE_FLAG(bool, use_vfp, true, "Use vfp instructions if supported");
+DEFINE_FLAG(bool, use_neon, false, "Use neon instructions if supported");
+DEFINE_FLAG(bool, use_integer_division, false,
+            "Use integer division instruction if supported");
 #else
 DEFINE_FLAG(bool, use_vfp, true, "Use vfp instructions if supported");
 DEFINE_FLAG(bool, use_neon, true, "Use neon instructions if supported");
 DEFINE_FLAG(bool, use_integer_division, true,
             "Use integer division instruction if supported");
 #endif
 
 #if defined(USING_SIMULATOR)
 #if defined(TARGET_ARCH_ARM_5TE)
 DEFINE_FLAG(bool, sim_use_hardfp, false, "Use the softfp ABI.");
@@ skipping 160 matching lines @@
 }
 
 #else
 
 void HostCPUFeatures::InitOnce() {
   CpuInfo::InitOnce();
   hardware_ = CpuInfo::GetCpuModel();
 
 #if defined(TARGET_ARCH_ARM_5TE)
   arm_version_ = ARMv5TE;
+#elif defined(TARGET_ARCH_ARM_6)
+  arm_version_ = ARMv6;
 #else
   arm_version_ = ARMv7;
 #endif
 
   integer_division_supported_ = FLAG_use_integer_division;
   vfp_supported_ = FLAG_use_vfp;
   neon_supported_ = FLAG_use_vfp && FLAG_use_neon;
   hardfp_supported_ = FLAG_sim_use_hardfp;
 #if defined(DEBUG)
   initialized_ = true;
 #endif
 }
 
 
 void HostCPUFeatures::Cleanup() {
   DEBUG_ASSERT(initialized_);
 #if defined(DEBUG)
   initialized_ = false;
 #endif
   ASSERT(hardware_ != NULL);
   free(const_cast<char*>(hardware_));
   hardware_ = NULL;
   CpuInfo::Cleanup();
 }
 #endif  // !defined(USING_SIMULATOR)
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM