Upgrade V8 to 2.5.7

1 files changed, 34 insertions, 12 deletions

diff --git a/deps/v8/src/arm/assembler-arm.h b/deps/v8/src/arm/assembler-arm.h
index 5b647a753..606ff8634 100644
--- a/deps/v8/src/arm/assembler-arm.h
+++ b/deps/v8/src/arm/assembler-arm.h
@@ -219,6 +219,11 @@ const DwVfpRegister d13 = { 13 };
 const DwVfpRegister d14 = { 14 };
 const DwVfpRegister d15 = { 15 };
 
+// VFP FPSCR constants.
+static const uint32_t kVFPExceptionMask = 0xf;
+static const uint32_t kVFPRoundingModeMask = 3 << 22;
+static const uint32_t kVFPFlushToZeroMask = 1 << 24;
+static const uint32_t kVFPRoundToMinusInfinityBits = 2 << 22;
 
 // Coprocessor register
 struct CRegister {
@@ -448,6 +453,7 @@ class Operand BASE_EMBEDDED {
   // Return true of this operand fits in one instruction so that no
   // 2-instruction solution with a load into the ip register is necessary.
   bool is_single_instruction() const;
+  bool must_use_constant_pool() const;
 
   inline int32_t immediate() const {
     ASSERT(!rm_.is_valid());
@@ -1007,26 +1013,37 @@ class Assembler : public Malloced {
   void vmov(const Register dst,
             const SwVfpRegister src,
             const Condition cond = al);
+  enum ConversionMode {
+    FPSCRRounding = 0,
+    RoundToZero = 1
+  };
   void vcvt_f64_s32(const DwVfpRegister dst,
                     const SwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_f32_s32(const SwVfpRegister dst,
                     const SwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_f64_u32(const DwVfpRegister dst,
                     const SwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_s32_f64(const SwVfpRegister dst,
                     const DwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_u32_f64(const SwVfpRegister dst,
                     const DwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_f64_f32(const DwVfpRegister dst,
                     const SwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
   void vcvt_f32_f64(const SwVfpRegister dst,
                     const DwVfpRegister src,
+                    ConversionMode mode = RoundToZero,
                     const Condition cond = al);
 
   void vadd(const DwVfpRegister dst,
@@ -1055,6 +1072,8 @@ class Assembler : public Malloced {
             const Condition cond = al);
   void vmrs(const Register dst,
             const Condition cond = al);
+  void vmsr(const Register dst,
+            const Condition cond = al);
   void vsqrt(const DwVfpRegister dst,
              const DwVfpRegister src,
              const Condition cond = al);
@@ -1117,13 +1136,9 @@ class Assembler : public Malloced {
   // Use --debug_code to enable.
   void RecordComment(const char* msg);
 
-  void RecordPosition(int pos);
-  void RecordStatementPosition(int pos);
-  bool WriteRecordedPositions();
-
   int pc_offset() const { return pc_ - buffer_; }
-  int current_position() const { return current_position_; }
-  int current_statement_position() const { return current_statement_position_; }
+
+  PositionsRecorder* positions_recorder() { return &positions_recorder_; }
 
   bool can_peephole_optimize(int instructions) {
     if (!FLAG_peephole_optimization) return false;
@@ -1259,12 +1274,6 @@ class Assembler : public Malloced {
   // The bound position, before this we cannot do instruction elimination.
   int last_bound_pos_;
 
-  // source position information
-  int current_position_;
-  int current_statement_position_;
-  int written_position_;
-  int written_statement_position_;
-
   // Code emission
   inline void CheckBuffer();
   void GrowBuffer();
@@ -1290,8 +1299,21 @@ class Assembler : public Malloced {
   friend class RelocInfo;
   friend class CodePatcher;
   friend class BlockConstPoolScope;
+
+  PositionsRecorder positions_recorder_;
+  friend class PositionsRecorder;
+  friend class EnsureSpace;
 };
 
+
+class EnsureSpace BASE_EMBEDDED {
+ public:
+  explicit EnsureSpace(Assembler* assembler) {
+    assembler->CheckBuffer();
+  }
+};
+
+
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_ASSEMBLER_ARM_H_