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Up to [Development] / linux-2.6-xfs / arch / um / sys-x86_64

Merge up to 2.6.19-rc3
Merge of 2.6.x-xfs-melb:linux:27325b by kenmcd.

#
# arch/x86_64/setjmp.S
#
# setjmp/longjmp for the x86-64 architecture
#

#
# The jmp_buf is assumed to contain the following, in order:
#	%rbx
#	%rsp (post-return)
#	%rbp
#	%r12
#	%r13
#	%r14
#	%r15
#	<return address>
#

	.text
	.align 4
	.globl setjmp
	.type setjmp, @function
setjmp:
	pop  %rsi			# Return address, and adjust the stack
	xorl %eax,%eax			# Return value
	movq %rbx,(%rdi)
	movq %rsp,8(%rdi)		# Post-return %rsp!
	push %rsi			# Make the call/return stack happy
	movq %rbp,16(%rdi)
	movq %r12,24(%rdi)
	movq %r13,32(%rdi)
	movq %r14,40(%rdi)
	movq %r15,48(%rdi)
	movq %rsi,56(%rdi)		# Return address
	ret

	.size setjmp,.-setjmp

	.text
	.align 4
	.globl longjmp
	.type longjmp, @function
longjmp:
	movl %esi,%eax			# Return value (int)
	movq (%rdi),%rbx
	movq 8(%rdi),%rsp
	movq 16(%rdi),%rbp
	movq 24(%rdi),%r12
	movq 32(%rdi),%r13
	movq 40(%rdi),%r14
	movq 48(%rdi),%r15
	jmp *56(%rdi)

	.size longjmp,.-longjmp