Blame sysdeps/unix/sysv/linux/sh/syscall.S

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/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <sysdep.h>
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ENTRY (__syscall)
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	mov	r4, r3			// syscall number
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	mov	r5, r4			// p1
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	mov	r6, r5			// p2
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	mov	r7, r6			// p3
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	mov.l	@r15, r7		// p4
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	mov.l	@(4,r15), r0		// p5
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	mov.l	@(8,r15), r1		// p6
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	mov.l	@(12,r15), r2		// p7
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	trapa	#0x17
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	mov     r0, r1
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	mov	#-12, r2
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	shad	r2, r1
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	not	r1, r1			// r1=0 means r0 = -1 to -4095
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	tst	r1, r1			// i.e. error in linux
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	bf	.Lpseudo_end
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	SYSCALL_ERROR_HANDLER
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.Lpseudo_end:
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	rts
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	 nop
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PSEUDO_END (__syscall)
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weak_alias (__syscall, syscall)