75 lines
2.8 KiB
ArmAsm
75 lines
2.8 KiB
ArmAsm
/*
|
|
* Copyright (c) 1994 Matthias Pfaller.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by Matthias Pfaller.
|
|
* 4. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
* $Id: mdprologue.S,v 1.3 1995/05/29 18:11:35 phil Exp $
|
|
*/
|
|
|
|
/*
|
|
* Run-time link editor entry points for ns32k architecture.
|
|
*/
|
|
|
|
.text
|
|
.globl _rtld_entry, _binder_entry, _binder
|
|
|
|
/*
|
|
* _rtld_entry(int version, struct crt_ldso *crtp)
|
|
*/
|
|
|
|
_rtl_entry:
|
|
enter [],0
|
|
sprd sb,tos
|
|
addr __GLOBAL_OFFSET_TABLE_(pc),r0
|
|
lprd sb,r0 /* PIC function prologue */
|
|
movd 12(fp),r0 /* -> crt_ldso structure */
|
|
movd 0(r0),r1 /* base address */
|
|
/* 1st entry in GOT */
|
|
/* + ld.so base address */
|
|
addr 0(0(sb))[r1:b],tos /* gives address of __DYNAMIC */
|
|
movd r0,tos /* crt_ldso pointer */
|
|
movd 8(fp),tos /* version */
|
|
jsr 0(_rtld(sb))[r1:b] /* call _rtld function */
|
|
lprd sb,-4(fp)
|
|
exit []
|
|
ret 0
|
|
|
|
/*
|
|
* First call to a procedure generally comes through here for
|
|
* binding.
|
|
*/
|
|
|
|
_binder_entry:
|
|
movd tos,r1 /* grab return address (within PLT) */
|
|
movd r0,tos /* save r0 (for cerror) */
|
|
movzwd 0(r1),tos /* get function index */
|
|
addr -6(r1),tos /* point to PLT slot */
|
|
bsr _binder /* relocate function address */
|
|
movd r0,tos /* prepare for jump */
|
|
movd 12(sp),r0 /* restore r0 */
|
|
ret 12 /* jump into function */
|