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Unified Diff: src/x64/assembler-x64-inl.h

Issue 112066: Add test, neg, and not instructions to x64 assembler (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 11 years, 7 months ago
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Index: src/x64/assembler-x64-inl.h
===================================================================
--- src/x64/assembler-x64-inl.h (revision 2072)
+++ src/x64/assembler-x64-inl.h (working copy)
@@ -56,7 +56,7 @@
// High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B.
-// REX.W is set.
+// REX.W is set. REX.X is cleared.
void Assembler::emit_rex_64(Register reg, Register rm_reg) {
emit(0x48 | (reg.code() & 0x8) >> 1 | rm_reg.code() >> 3);
}
@@ -70,6 +70,39 @@
}
+// High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B.
+// REX.W is set. REX.X is cleared.
+void Assembler::emit_rex_32(Register reg, Register rm_reg) {
+ emit(0x40 | (reg.code() & 0x8) >> 1 | rm_reg.code() >> 3);
+}
+
+
+// The high bit of reg is used for REX.R, the high bit of op's base
+// register is used for REX.B, and the high bit of op's index register
+// is used for REX.X. REX.W is cleared.
+void Assembler::emit_rex_32(Register reg, const Operand& op) {
+ emit(0x40 | (reg.code() & 0x8) >> 1 | op.rex_);
+}
+
+
+// High bit of reg goes to REX.R, high bit of rm_reg goes to REX.B.
+// REX.W and REX.X are cleared. If no REX bits are set, no byte is emitted.
+void Assembler::emit_optional_rex_32(Register reg, Register rm_reg) {
+ byte rex_bits = (reg.code() & 0x8) >> 1 | rm_reg.code() >> 3;
+ if (rex_bits) emit(0x40 | rex_bits);
+}
+
+
+// The high bit of reg is used for REX.R, the high bit of op's base
+// register is used for REX.B, and the high bit of op's index register
+// is used for REX.X. REX.W is cleared. If no REX bits are set, nothing
+// is emitted.
+void Assembler::emit_optional_rex_32(Register reg, const Operand& op) {
+ byte rex_bits = (reg.code() & 0x8) >> 1 | op.rex_;
+ if (rex_bits) emit(0x40 | rex_bits);
+}
+
+
void Assembler::set_target_address_at(byte* location, byte* value) {
UNIMPLEMENTED();
}
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