From 9e975a7e0891e7c0a24f31a82850d261103be5ce Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Thu, 26 Jul 2007 22:09:24 -0700
Subject: X86: Implement shift-by-one instructions, and make register shifts
 use registers.

--HG--
extra : convert_revision : ce4af3e56b45821e0a8b27f288b532d2f9dd3336
---
 src/arch/x86/isa/insts/rotate_and_shift/shift.py | 92 ++++++++++++++++++------
 1 file changed, 69 insertions(+), 23 deletions(-)

(limited to 'src/arch/x86/isa/insts')

diff --git a/src/arch/x86/isa/insts/rotate_and_shift/shift.py b/src/arch/x86/isa/insts/rotate_and_shift/shift.py
index b9c07b0ba..64eab3edc 100644
--- a/src/arch/x86/isa/insts/rotate_and_shift/shift.py
+++ b/src/arch/x86/isa/insts/rotate_and_shift/shift.py
@@ -74,15 +74,35 @@ def macroop SAL_P_I
     st t1, ds, [0, t0, t7], disp
 };
 
+def macroop SAL_1_R
+{
+    slli reg, reg, 1
+};
+
+def macroop SAL_1_M
+{
+    ld t1, ds, [scale, index, base], disp
+    slli t1, t1, 1
+    st t1, ds, [scale, index, base], disp
+};
+
+def macroop SAL_1_P
+{
+    rdip t7
+    ld t1, ds, [0, t0, t7], disp
+    slli t1, t1, 1
+    st t1, ds, [0, t0, t7], disp
+};
+
 def macroop SAL_R_R
 {
-    slli reg, reg, regm
+    sll reg, reg, regm
 };
 
 def macroop SAL_M_R
 {
     ld t1, ds, [scale, index, base], disp
-    slli t1, t1, reg
+    sll t1, t1, reg
     st t1, ds, [scale, index, base], disp
 };
 
@@ -90,7 +110,7 @@ def macroop SAL_P_R
 {
     rdip t7
     ld t1, ds, [0, t0, t7], disp
-    slli t1, t1, reg
+    sll t1, t1, reg
     st t1, ds, [0, t0, t7], disp
 };
 
@@ -114,15 +134,35 @@ def macroop SHR_P_I
     st t1, ds, [0, t0, t7], disp
 };
 
+def macroop SHR_1_R
+{
+    srli reg, reg, 1
+};
+
+def macroop SHR_1_M
+{
+    ld t1, ds, [scale, index, base], disp
+    srli t1, t1, 1
+    st t1, ds, [scale, index, base], disp
+};
+
+def macroop SHR_1_P
+{
+    rdip t7
+    ld t1, ds, [0, t0, t7], disp
+    srli t1, t1, 1
+    st t1, ds, [0, t0, t7], disp
+};
+
 def macroop SHR_R_R
 {
-    srli reg, reg, regm
+    srl reg, reg, regm
 };
 
 def macroop SHR_M_R
 {
     ld t1, ds, [scale, index, base], disp
-    srli t1, t1, reg
+    srl t1, t1, reg
     st t1, ds, [scale, index, base], disp
 };
 
@@ -130,7 +170,7 @@ def macroop SHR_P_R
 {
     rdip t7
     ld t1, ds, [0, t0, t7], disp
-    srli t1, t1, reg
+    srl t1, t1, reg
     st t1, ds, [0, t0, t7], disp
 };
 
@@ -154,15 +194,35 @@ def macroop SAR_P_I
     st t1, ds, [0, t0, t7], disp
 };
 
+def macroop SAR_1_R
+{
+    srai reg, reg, 1
+};
+
+def macroop SAR_1_M
+{
+    ld t1, ds, [scale, index, base], disp
+    srai t1, t1, 1
+    st t1, ds, [scale, index, base], disp
+};
+
+def macroop SAR_1_P
+{
+    rdip t7
+    ld t1, ds, [0, t0, t7], disp
+    srai t1, t1, 1
+    st t1, ds, [0, t0, t7], disp
+};
+
 def macroop SAR_R_R
 {
-    srai reg, reg, regm
+    sra reg, reg, regm
 };
 
 def macroop SAR_M_R
 {
     ld t1, ds, [scale, index, base], disp
-    srai t1, t1, reg
+    sra t1, t1, reg
     st t1, ds, [scale, index, base], disp
 };
 
@@ -170,21 +230,7 @@ def macroop SAR_P_R
 {
     rdip t7
     ld t1, ds, [0, t0, t7], disp
-    srai t1, t1, reg
+    sra t1, t1, reg
     st t1, ds, [0, t0, t7], disp
 };
 '''
-#let {{
-#    class SAL(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#    class SAR(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#    class SHL(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#    class SHR(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#    class SHLD(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#    class SHRD(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#}};
-- 
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