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Rev 3343 Rev 3492
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	and $0xffffbfff, %ecx
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	and $0xffffbfff, %ecx
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	push %ecx
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	push %ecx
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	popfl
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	popfl
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.endm	
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.endm	
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/*
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 * The SYSENTER syscall mechanism can be used for syscalls with
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 * four or fewer arguments. To pass these four arguments, we
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 * use four registers: EDX, ECX, EBX, ESI. The syscall number
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 * is passed in EAX. We use EDI to remember the return address
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 * and EBP to remember the stack. The INT-based syscall mechanism
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 * can actually handle six arguments plus the syscall number
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 * entirely in registers.
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 */
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.global sysenter_handler
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sysenter_handler:
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	pushl %ebp	# remember user stack
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	pushl %edi	# remember return user address
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	pushl %gs	# remember TLS
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	pushl %eax	# syscall number
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	subl $8, %esp	# unused sixth and fifth argument
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	pushl %esi	# fourth argument
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	pushl %ebx	# third argument
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	pushl %ecx	# second argument
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	pushl %edx	# first argument
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	movw $16, %ax
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	movw %ax, %ds
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	movw %ax, %es
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	cld
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	call syscall_handler
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	addl $28, %esp	# remove arguments from stack
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	pop %gs		# restore TLS
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	pop %edx	# prepare return EIP for SYSEXIT
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	pop %ecx	# prepare userspace ESP for SYSEXIT
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	sysexit		# return to userspace
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## Declare interrupt handlers
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## Declare interrupt handlers
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#
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#
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# Declare interrupt handlers for n interrupt
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# Declare interrupt handlers for n interrupt
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# vectors starting at vector i.
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# vectors starting at vector i.
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#
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#