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Unified Diff: src/arm/macro-assembler-arm.h

Issue 10909007: Sharing of descriptor arrays. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Addressed comments Created 8 years, 3 months ago
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Index: src/arm/macro-assembler-arm.h
diff --git a/src/arm/macro-assembler-arm.h b/src/arm/macro-assembler-arm.h
index 8eb97125eab14ddb0f7a12fa1a97d8341b2679bd..7d127b5e8781f6086ceaacc0c5c50ece65b8adf3 100644
--- a/src/arm/macro-assembler-arm.h
+++ b/src/arm/macro-assembler-arm.h
@@ -1273,6 +1273,15 @@ class MacroAssembler: public Assembler {
Register descriptors,
Register scratch);
void EnumLength(Register dst, Register map);
+ void NumberOfOwnDescriptors(Register dst, Register map);
+
+ template<typename Field>
+ void DecodeField(Register reg) {
+ static const int shift = Field::kShift;
+ static const int mask = (Field::kMask >> shift) << kSmiTagSize;
+ mov(reg, Operand(reg, LSR, shift));
+ and_(reg, reg, Operand(mask));
+ }
// Activation support.
void EnterFrame(StackFrame::Type type);
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