summaryrefslogtreecommitdiffstats
path: root/arch/x86/xen/xen-head.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/xen/xen-head.S')
-rw-r--r--arch/x86/xen/xen-head.S19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index b65f59a..de93b20 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -38,13 +38,18 @@
__INIT
ENTRY(startup_xen)
cld
-#ifdef CONFIG_X86_32
- mov %esi,xen_start_info
- mov $init_thread_union+THREAD_SIZE,%esp
-#else
- mov %rsi,xen_start_info
- mov $init_thread_union+THREAD_SIZE,%rsp
-#endif
+
+ /* 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 %_ASM_SI, xen_start_info
+ mov $init_thread_union+THREAD_SIZE, %_ASM_SP
+
jmp xen_start_kernel
__FINIT
OpenPOWER on IntegriCloud