https://bugzilla.mozilla.org/show_bug.cgi?id=627669

diff -up xulrunner-2.0/mozilla-central/gfx/ycbcr/chromium_types.h.chromium-types xulrunner-2.0/mozilla-central/gfx/ycbcr/chromium_types.h
--- xulrunner-2.0/mozilla-central/gfx/ycbcr/chromium_types.h.chromium-types	2010-11-04 21:05:47.000000000 +0100
+++ xulrunner-2.0/mozilla-central/gfx/ycbcr/chromium_types.h	2010-11-15 14:20:12.000000000 +0100
@@ -64,6 +64,10 @@ typedef PRInt16 int16;
 #define ARCH_CPU_PPC_FAMILY 1
 #define ARCH_CPU_PPC 1
 #define ARCH_CPU_32_BITS 1
+#elif defined(__ppc64__)
+#define ARCH_CPU_PPC_FAMILY 1
+#define ARCH_CPU_PPC 1
+#define ARCH_CPU_64_BITS 1
 #elif defined(__sparc)
 #define ARCH_CPU_SPARC_FAMILY 1
 #define ARCH_CPU_SPARC 1
@@ -72,6 +76,14 @@ typedef PRInt16 int16;
 #define ARCH_CPU_SPARC_FAMILY 1
 #define ARCH_CPU_SPARC 1
 #define ARCH_CPU_64_BITS 1
+#elif defined(__s390__)
+#define ARCH_CPU_S390_FAMILY 1
+#define ARCH_CPU_S390 1
+#define ARCH_CPU_32_BITS 1
+#elif defined(__s390x__)
+#define ARCH_CPU_S390_FAMILY 1
+#define ARCH_CPU_S390 1
+#define ARCH_CPU_64_BITS 1
 #else
 #warning Please add support for your architecture in chromium_types.h
 #endif