X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=src%2Fcompiler%2Fx86%2Finsts.lisp;h=811738374a55ff6eac774e9cd76a5dd08b94a8bc;hb=bffa99d35c7d50ac46b9eb7dbe25d1ab1a0e6145;hp=ebfa2b805eb9f1adbab4e38e930deeabb246e207;hpb=ba2143e06b11101674720393e6f6c30a23113a4b;p=sbcl.git

diff --git a/src/compiler/x86/insts.lisp b/src/compiler/x86/insts.lisp
index ebfa2b8..8117383 100644
--- a/src/compiler/x86/insts.lisp
+++ b/src/compiler/x86/insts.lisp
@@ -615,6 +615,14 @@
   (disp :field (byte 16 8))
   (level :field (byte 8 24)))
 
+(sb!disassem:define-instruction-format (prefetch 24
+						 :default-printer
+						 '(:name ", " reg/mem))
+  (prefix :field (byte 8 0) :value #b00001111)
+  (op :field (byte 8 8) :value #b00011000)
+  (reg/mem :fields (list (byte 2 22) (byte 3 16)) :type 'byte-reg/mem)
+  (reg :field (byte 3 19) :type 'reg))
+
 ;;; Single byte instruction with an immediate byte argument.
 (sb!disassem:define-instruction-format (byte-imm 16
 				     :default-printer '(:name :tab code))
@@ -1840,6 +1848,43 @@
   (:emitter
    (emit-byte segment #b11001001)))
 
+;;;; prefetch
+(define-instruction prefetchnta (segment ea)
+  (:printer prefetch ((op #b00011000) (reg #b000)))
+  (:emitter
+   (aver (typep ea 'ea))
+   (aver (eq :byte (ea-size ea)))
+   (emit-byte segment #b00001111)
+   (emit-byte segment #b00011000)
+   (emit-ea segment ea #b000)))
+
+(define-instruction prefetcht0 (segment ea)
+  (:printer prefetch ((op #b00011000) (reg #b001)))
+  (:emitter
+   (aver (typep ea 'ea))
+   (aver (eq :byte (ea-size ea)))
+   (emit-byte segment #b00001111)
+   (emit-byte segment #b00011000)
+   (emit-ea segment ea #b001)))
+
+(define-instruction prefetcht1 (segment ea)
+  (:printer prefetch ((op #b00011000) (reg #b010)))
+  (:emitter
+   (aver (typep ea 'ea))
+   (aver (eq :byte (ea-size ea)))
+   (emit-byte segment #b00001111)
+   (emit-byte segment #b00011000)
+   (emit-ea segment ea #b010)))
+
+(define-instruction prefetcht2 (segment ea)
+  (:printer prefetch ((op #b00011000) (reg #b011)))
+  (:emitter
+   (aver (typep ea 'ea))
+   (aver (eq :byte (ea-size ea)))
+   (emit-byte segment #b00001111)
+   (emit-byte segment #b00011000)
+   (emit-ea segment ea #b011)))
+
 ;;;; interrupt instructions
 
 (defun snarf-error-junk (sap offset &optional length-only)