Add Intel encodings for imul.

2017-07-18 09:22:50 -07:00
parent 2f7057b96f
commit cf876e492a
6 changed files with 52 additions and 1 deletions
--- a/lib/cretonne/src/isa/intel/binemit.rs
+++ b/lib/cretonne/src/isa/intel/binemit.rs
@@ -76,6 +76,14 @@ fn put_op2<CS: CodeSink + ?Sized>(bits: u16, rex: u8, sink: &mut CS) {
    sink.put1(bits as u8);
 }

+// Emit two-byte opcode: 0F XX with REX prefix.
+fn put_rexop2<CS: CodeSink + ?Sized>(bits: u16, rex: u8, sink: &mut CS) {
+    debug_assert_eq!(bits & 0x0f00, 0x0400, "Invalid encoding bits for RexOp2*");
+    rex_prefix(bits, rex, sink);
+    sink.put1(0x0f);
+    sink.put1(bits as u8);
+}
+
 // Emit single-byte opcode with mandatory prefix.
 fn put_mp1<CS: CodeSink + ?Sized>(bits: u16, rex: u8, sink: &mut CS) {
    debug_assert_eq!(bits & 0x8c00, 0, "Invalid encoding bits for Mp1*");