X86: Implement MSR reads and writes and the wrsmr and rdmsr instructions.

There are no priviledge checks, so these instructions will all work in all
modes.

--HG--
extra : convert_revision : ff893eb569313d8aecbfffb47bcbd1c2d65cd393

1 files changed, 3 insertions, 2 deletions

diff --git a/src/arch/x86/mmaped_ipr.hh b/src/arch/x86/mmaped_ipr.hh
index 1fef72fa6..c7befa35b 100644
--- a/src/arch/x86/mmaped_ipr.hh
+++ b/src/arch/x86/mmaped_ipr.hh
@@ -76,7 +76,7 @@ namespace X86ISA
 #if !FULL_SYSTEM
         panic("Shouldn't have a memory mapped register in SE\n");
 #else
-        panic("Memory mapped registers aren't implemented for x86!\n");
+        pkt->set(xc->readMiscReg(pkt->getAddr() / sizeof(MiscReg)));
 #endif
     }
 
@@ -86,7 +86,8 @@ namespace X86ISA
 #if !FULL_SYSTEM
         panic("Shouldn't have a memory mapped register in SE\n");
 #else
-        panic("Memory mapped registers aren't implemented for x86!\n");
+        xc->setMiscReg(pkt->getAddr() / sizeof(MiscReg),
+                gtoh(pkt->get<uint64_t>()));
 #endif
     }
 };