X86: Implement the BOUND instruction.

--HG--
extra : convert_revision : 7bcfa5b4a47d342bee267cc593a1bd4b4f31abe0

2 files changed, 15 insertions, 6 deletions

diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
index 10118eae8..23ba243fb 100644
--- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
@@ -186,7 +186,7 @@
             }
             0x2: decode MODE_SUBMODE {
                 0x0: UD2();
-                default: WarnUnimpl::bound_Gv_Ma();
+                default: BOUND(Gv,Mv);
             }
             0x3: decode MODE_SUBMODE {
                 //The second operand should really be of size "d", but it's
diff --git a/src/arch/x86/isa/insts/general_purpose/compare_and_test/bounds.py b/src/arch/x86/isa/insts/general_purpose/compare_and_test/bounds.py
index 4b6cc8f71..2df5cf746 100644
--- a/src/arch/x86/isa/insts/general_purpose/compare_and_test/bounds.py
+++ b/src/arch/x86/isa/insts/general_purpose/compare_and_test/bounds.py
@@ -53,8 +53,17 @@
 #
 # Authors: Gabe Black
 
-microcode = ""
-#let {{
-#    class BOUND(Inst):
-#	"GenFault ${new UnimpInstFault}"
-#}};
+microcode = '''
+def macroop BOUND_R_M {
+    ld t1, seg, sib, disp, dataSize="env.dataSize * 2"
+    srli t2, t1, "env.dataSize * 8"
+    sub t1, t1, reg, flags=(ECF,)
+    fault "new BoundRange", flags=(CECF,)
+    sub t2, reg, t2, flags=(ECF,)
+    fault "new BoundRange", flags=(CECF,)
+};
+
+def macroop BOUND_R_P {
+    fault "new UnimpInstFault"
+};
+'''