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/*
* Copied from arch/xen/i386/kernel/entry.S
*/
/* Offsets into shared_info_t. */
#define evtchn_upcall_pending /* 0 */
#define evtchn_upcall_mask 1
#define sizeof_vcpu_shift 6
#ifdef CONFIG_SMP
//#define preempt_disable(reg) incl threadinfo_preempt_count(reg)
//#define preempt_enable(reg) decl threadinfo_preempt_count(reg)
#define preempt_disable(reg)
#define preempt_enable(reg)
#define XEN_GET_VCPU_INFO(reg) preempt_disable(%rbp) ; \
movq %gs:pda_cpunumber,reg ; \
shl $32, reg ; \
shr $32-sizeof_vcpu_shift,reg ; \
addq HYPERVISOR_shared_info,reg
#define XEN_PUT_VCPU_INFO(reg) preempt_enable(%rbp) ; \
#define XEN_PUT_VCPU_INFO_fixup .byte 0xff,0xff,0xff
#else
#define XEN_GET_VCPU_INFO(reg) movq HYPERVISOR_shared_info,reg
#define XEN_PUT_VCPU_INFO(reg)
#define XEN_PUT_VCPU_INFO_fixup
#endif
#define XEN_LOCKED_BLOCK_EVENTS(reg) movb $1,evtchn_upcall_mask(reg)
#define XEN_LOCKED_UNBLOCK_EVENTS(reg) movb $0,evtchn_upcall_mask(reg)
#define XEN_BLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg) ; \
XEN_LOCKED_BLOCK_EVENTS(reg) ; \
XEN_PUT_VCPU_INFO(reg)
#define XEN_UNBLOCK_EVENTS(reg) XEN_GET_VCPU_INFO(reg) ; \
XEN_LOCKED_UNBLOCK_EVENTS(reg) ; \
XEN_PUT_VCPU_INFO(reg)
#define XEN_TEST_PENDING(reg) testb $0xFF,evtchn_upcall_pending(reg)
VGCF_IN_SYSCALL = (1<<8)
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