77 lines
3.0 KiB
ArmAsm
77 lines
3.0 KiB
ArmAsm
/* $NetBSD: rtld_start.S,v 1.4 1999/03/01 14:40:32 christos Exp $ */
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/*-
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* Copyright (c) 1999 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas and Paul Kranenburg.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <machine/asm.h>
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.section ".text"
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.align 4
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.global _rtld_start
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.type _rtld_start,@function
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_rtld_start:
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mov 0, %fp /* Erect a fence post for ourselves */
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mov %g1, %l1 /* save ps_strings */
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sub %sp, 8, %sp /* Make room for return args */
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call _rtld
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add %sp, 64, %o0 /* &argc - 8 */
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ld [%sp + 64], %g3 /* arg: cleanup */
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ld [%sp + 64 + 4], %g2 /* arg: obj */
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add %sp, 8, %sp /* restore stack pointer */
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jmp %o0
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mov %l1, %g1 /* restore ps_strings */
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.section ".text"
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.align 4
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.global _rtld_bind_start
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.type _rtld_bind_start,@function
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_rtld_bind_start: # (obj, reloff)
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save %sp, -96, %sp /* setup standard stack frame */
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ld [%i7 + 8], %o0 /* obj id is in second PLT slot */
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srl %g1, 10, %o1 /* offset is in high 22 bits */
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call _rtld_bind /* Call _rtld_bind(obj, offset) */
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sub %o1, 12*4, %o1 /* first 4 `pltrel' entries missing! */
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mov %o0, %g1 /* return value == function address */
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restore /* get rid of our context */
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jmp %g1 /* and the jmpslot context, then go. */
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restore
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