From 17f24dc37749ce9e40b67c5c28a1daefaeaeb676 Mon Sep 17 00:00:00 2001
From: John Reiser <jreiser@BitWagon.com>
Date: Wed, 18 Oct 2006 08:35:25 -0700
Subject: [PATCH] PackBvmlinuzI386 allow x86_64

---
 src/p_vmlinz.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/p_vmlinz.cpp b/src/p_vmlinz.cpp
index 53e2118f..486d908e 100644
--- a/src/p_vmlinz.cpp
+++ b/src/p_vmlinz.cpp
@@ -218,6 +218,13 @@ int PackVmlinuzI386::decompressKernel()
         if (memcmp(ibuf, "\xFC\x0F\x01", 3) == 0) goto head_ok;
         // 2.6.x+grsecurity+strongswan+openwall+trustix: ljmp $0x10,...
         if (ibuf[0] == 0xEA && memcmp(ibuf+5, "\x10\x00", 2) == 0) goto head_ok;
+        // x86_64 2.6.x
+        if (0xB8==ibuf[0]  // mov $...,%eax
+        &&  0x8E==ibuf[5] && 0xD8==ibuf[6]  // mov %eax,%ds
+        &&  0x0F==ibuf[7] && 0x01==ibuf[8] && 020==(070 & ibuf[9]) // lgdtl
+        &&  0xB8==ibuf[14]  // mov $...,%eax
+        &&  0x0F==ibuf[19] && 0xA2==ibuf[20]  // cpuid
+        ) goto head_ok;
 
         throwCantPack("unrecognized kernel architecture; use option `-f' to force packing");
     head_ok: