[PATCH 12/15] add CLBR_ defines for x86_64.

Glauber de Oliveira Costa
2007-12-20T20:12:41Z

x86_64 needs a potentially larger clobber list than i386, due to its calling
convention. So we add more CLBR_ defines for it.
Note that CLBR_ANY is different for each of the architectures, since it comprises
the notion of "All call clobbers in this architecture"

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
---
include/asm-x86/paravirt.h | 23 ++++++++++++++++++-----
1 files changed, 18 insertions(+), 5 deletions(-)

Index: linux-2.6-x86/include/asm-x86/paravirt.h
===================================================================
--- linux-2.6-x86.orig/include/asm-x86/paravirt.h 2007-12-20 19:08:06.000000000 -0800
+++ linux-2.6-x86/include/asm-x86/paravirt.h 2007-12-20 19:08:10.000000000 -0800
@@ -8,11 +8,24 @@
#include <asm/asm.h>

/* Bitmask of what can be clobbered: usually at least eax. */
-#define CLBR_NONE 0x0
-#define CLBR_EAX 0x1
-#define CLBR_ECX 0x2
-#define CLBR_EDX 0x4
-#define CLBR_ANY 0x7
+#define CLBR_NONE 0
+#define CLBR_EAX (1 << 0)
+#define CLBR_ECX (1 << 1)
+#define CLBR_EDX (1 << 2)
+
+#ifdef CONFIG_X86_64
+#define CLBR_RSI (1 << 3)
+#define CLBR_RDI (1 << 4)
+#define CLBR_R8 (1 << 5)
+#define CLBR_R9 (1 << 6)
+#define CLBR_R10 (1 << 7)
+#define CLBR_R11 (1 << 8)
+#define CLBR_ANY ((1 << 9) - 1)
+#include <asm/desc_defs.h>
+#else
+/* CLBR_ANY should match all regs platform has. For i386, that's just it */
+#define CLBR_ANY ((1 << 3) - 1)
+#endif /* X86_64 */

#ifndef __ASSEMBLY__
#include <linux/types.h>