From: Gabe Black <gblack@eecs.umich.edu>
Date: Fri, 19 Oct 2007 05:42:17 +0000 (-0700)
Subject: X86: Implement the undocumented SALC instruction which sets AL to 0xFF if CF=1 and... 
X-Git-Tag: m5_2.0_beta4~42
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f0dce3bfce72a1a8514aa22e04ea6e06253a985f;p=gem5.git

X86: Implement the undocumented SALC instruction which sets AL to 0xFF if CF=1 and 0x00 otherwise.

--HG--
extra : convert_revision : 845d43c544e296d7595f54054906055a9f21ad9f
---

diff --git a/src/arch/x86/isa/decoder/one_byte_opcodes.isa b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
index 483e750b2..473dd1eeb 100644
--- a/src/arch/x86/isa/decoder/one_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/one_byte_opcodes.isa
@@ -461,7 +461,7 @@
             }
             0x6: decode MODE_SUBMODE {
                 0x0: UD2();
-                default: WarnUnimpl::salc();
+                default: SALC(rAb);
             }
             0x7: XLAT();
         }
diff --git a/src/arch/x86/isa/insts/general_purpose/compare_and_test/set_byte_on_condition.py b/src/arch/x86/isa/insts/general_purpose/compare_and_test/set_byte_on_condition.py
index 81091905c..fab42dffd 100644
--- a/src/arch/x86/isa/insts/general_purpose/compare_and_test/set_byte_on_condition.py
+++ b/src/arch/x86/isa/insts/general_purpose/compare_and_test/set_byte_on_condition.py
@@ -54,6 +54,11 @@
 # Authors: Gabe Black
 
 microcode = '''
+def macroop SALC_R
+{
+    sbb reg, reg, reg, dataSize=1
+};
+
 def macroop SETZ_R
 {
     movi reg, reg, 1, flags=(CZF,)