socketcall.S

#
# socketcall.S
#
# On i386, the main (only?) user of socketcall(2), the memory array
# socketcall(2) needs is conveniently already assembled for us on
# the stack.  Capitalize on that to make a common socketcall stub.
#

#include <asm/unistd.h>

#ifdef __i386__

	.text
	.align 4
	.globl __socketcall_common
	.type __socketcall_common, @function

__socketcall_common:
	pushl %ebx
	movzbl %al,%ebx		# The socketcall number is passed in in %al
	leal 8(%esp),%ecx	# Argument pointer
	movl $__NR_socketcall, %eax
	int $0x80
	cmpl $-125,%eax		# Error return?
	popl %ebx
	jb 1f
	neg %eax
	movl %eax,errno
	xorl %eax,%eax
	decl %eax		# Return = -1
1:
	ret

	.size __socketcall_common,.-__socketcall_common
	
#endif