SSE Assembler + Linux build fixes

runtime/platform/globals.h

Index: runtime/platform/globals.h
diff --git a/runtime/platform/globals.h b/runtime/platform/globals.h
index 0e352c647eadaaf81687d99fa5a9805f57f9538e..176246e9de500987b422a0c5427e153014ce20f0 100644
--- a/runtime/platform/globals.h
+++ b/runtime/platform/globals.h
@@ -79,15 +79,47 @@
 #if defined(_M_X64) || defined(__x86_64__)
 #define HOST_ARCH_X64 1
 #define ARCH_IS_64_BIT 1
+#include <xmmintrin.h>  // NOLINT
+#define kFpuRegisterSize 16
+typedef __m128 fpu_register_t;
+typedef __m128 simd_value_t;
+// Unaligned load.
+#define simd_value_safe_load(addr)                                             \
+  _mm_loadu_ps(reinterpret_cast<const float*>(addr))
+// Unaligned store.
+#define simd_value_safe_store(addr, value)                                     \
+  _mm_storeu_ps(reinterpret_cast<float*>(addr), value)
 #elif defined(_M_IX86) || defined(__i386__)
 #define HOST_ARCH_IA32 1
 #define ARCH_IS_32_BIT 1
+#include <xmmintrin.h>  // NOLINT
+#define kFpuRegisterSize 16
+typedef __m128 fpu_register_t;
+typedef __m128 simd_value_t;
+// Unaligned load.
+#define simd_value_safe_load(addr)                                             \
+  _mm_loadu_ps(reinterpret_cast<const float*>(addr))
+// Unaligned store.
+#define simd_value_safe_store(addr, value)                                     \
+  _mm_storeu_ps(reinterpret_cast<float*>(addr), value)
 #elif defined(__ARMEL__)
 #define HOST_ARCH_ARM 1
 #define ARCH_IS_32_BIT 1
+#define kFpuRegisterSize 8
+typedef double fpu_register_t;
+// TODO(johnmccutchan): ARM simd type.
+typedef struct {
+  uint32_t data_[4];
+} simd_value_t;
 #elif defined(__MIPSEL__)
 #define HOST_ARCH_MIPS 1
 #define ARCH_IS_32_BIT 1
+#define kFpuRegisterSize 8
+typedef double fpu_register_t;
+// TODO(johnmccutchan): MIPS simd type.
+typedef struct {
+  uint32_t data_[4];
+} simd_value_t;
 #else
 #error Architecture was not detected as supported by Dart.
 #endif
@@ -169,7 +201,8 @@ typedef uintptr_t uword;
 // Byte sizes.
 const int kWordSize = sizeof(word);
 const int kDoubleSize = sizeof(double);  // NOLINT
-const int kFloatSize = sizeof(float); // NOLINT
+const int kFloatSize = sizeof(float);  // NOLINT
+const int kSimd128Size = 16;
 #ifdef ARCH_IS_32_BIT
 const int kWordSizeLog2 = 2;
 const uword kUwordMax = kMaxUint32;