[PATCH 4/4] x86/xen: remove 32-bit awareness from startup_xen

[Juergen Gross <jgross@xxxxxxxx>]

startup_xen is still 32-bit aware, even if no longer needed.

Replace the register macros by the 64-bit register names for making
it more readable.

Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
---
 arch/x86/xen/xen-head.S | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index cb6538ae2fe0..38b0a3226c95 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -28,13 +28,13 @@ SYM_CODE_START(startup_xen)
 
        /* Clear .bss */
        xor %eax,%eax
-       mov $__bss_start, %_ASM_DI
-       mov $__bss_stop, %_ASM_CX
-       sub %_ASM_DI, %_ASM_CX
-       shr $__ASM_SEL(2, 3), %_ASM_CX
-       rep __ASM_SIZE(stos)
+       mov $__bss_start, %rdi
+       mov $__bss_stop, %rcx
+       sub %rdi, %rcx
+       shr $3, %rcx
+       rep stosq
 
-       mov %_ASM_SI, xen_start_info
+       mov %rsi, xen_start_info
        mov initial_stack(%rip), %rsp
 
        /* Set up %gs.
-- 
2.26.2