From: Gabe Black <gblack@eecs.umich.edu>
Date: Wed, 25 Feb 2009 18:19:41 +0000 (-0800)
Subject: X86: Implement the fence instructions. These are not microcoded.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d48214a6560049643f39873a533f27d5c8895a4e;p=gem5.git

X86: Implement the fence instructions. These are not microcoded.
---

diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
index a0a08df8f..edacf5bcb 100644
--- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa
+++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa
@@ -831,9 +831,12 @@
                 //0x6: group16();
                 0x6: decode MODRM_MOD {
                     0x3: decode MODRM_REG {
-                        0x5: lfence();
-                        0x6: mfence();
-                        0x7: sfence();
+                        0x5: BasicOperate::LFENCE(
+                                     {{/*Nothing*/}}, IsReadBarrier);
+                        0x6: BasicOperate::MFENCE(
+                                     {{/*Nothing*/}}, IsMemBarrier);
+                        0x7: BasicOperate::SFENCE(
+                                     {{/*Nothing*/}}, IsWriteBarrier);
                         default: Inst::UD2();
                     }
                     default: decode MODRM_REG {