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/* $OpenBSD: ldasm.S,v 1.26 2023/01/09 13:52:42 kettenis Exp $ */
/*
* Copyright (c) 2004 Michael Shalayeff
* 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.
*
* 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 OR HIS RELATIVES 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 MIND, 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.
*/
#include <sys/syscall.h>
#include <machine/asm.h>
#define _LOCORE
#include <machine/frame.h>
#include <machine/vmparam.h>
#undef _LOCORE
.import $global$, data
ENTRY(_dl_start,32)
copy r3, r1
copy sp, r3
stwm r1, HPPA_FRAME_SIZE+16*4(sp)
stw arg0, HPPA_FRAME_ARG(0)(r3) /* ps_strings */
bl 1f, r19
depi 0, 31, 2, r19
1: addil L'$global$ - ($PIC_pcrel$0 - 8), r19
ldo R'$global$ - ($PIC_pcrel$0 - 12)(r1), r19
bl 1f, arg2
depi 0, 31, 2, arg2
1: addil L'_DYNAMIC - ($PIC_pcrel$0 - 8), arg2
ldo R'_DYNAMIC - ($PIC_pcrel$0 - 12)(r1), arg2
stw arg2, HPPA_FRAME_ARG(1)(r3)
/* make sure to get a fault until it's set proper */
ldi -1, dp
ldw 0(arg0), arg0
ldo 4(r3), arg1 /* dl_data */
bl _dl_boot_bind, rp
ldo -4(arg0), arg0
ldw HPPA_FRAME_ARG(1)(r3), arg1 /* &_DYNAMIC */
ldw HPPA_FRAME_ARG(0)(r3), arg3 /* ps_strings */
ldw 0(r19), arg2
sub arg1, arg2, arg2 /* loff */
ldw 0(arg3), arg0 /* argv */
ldw 8(arg3), arg1 /* envp */
bl _dl_boot, rp
ldo 4(r3), arg3 /* dl_data */
ldw HPPA_FRAME_ARG(0)(r3), arg0 /* ps_strings */
addil LT'_dl_dtors_plabel, r19
ldw RT'_dl_dtors_plabel(r1), arg1
ldw 0(arg1), arg1 /* cleanup */
ldo HPPA_FRAME_SIZE(r3), sp
copy r0, rp
bv r0(ret0)
ldwm -HPPA_FRAME_SIZE(sp), r3
EXIT(_dl_start)
.section .data
.align 4
_dl_dtors_plabel:
.word P%_dl_dtors
.previous
LEAF_ENTRY(_hppa_dl_set_dp)
bv r0(rp)
copy arg0, r27
EXIT(_hppa_dl_set_dp)
/*
* This is a magic branch instruction that is used by GCC's
* __canonicalize_funcptr_for_compare() function to fixup relocations
* in order to do function pointer comparisons.
*/
b _dl_bind
ENTRY(_dl_bind_start,32)
copy r3, r1
copy sp, r3
stwm r1, HPPA_FRAME_SIZE(sp)
stw rp, HPPA_FRAME_CRP(r3)
stw arg0, HPPA_FRAME_ARG(0)(r3)
stw arg1, HPPA_FRAME_ARG(1)(r3)
stw arg2, HPPA_FRAME_ARG(2)(r3)
stw arg3, HPPA_FRAME_ARG(3)(r3)
stw t1, 4(r3)
stw ret0, 8(r3)
stw ret1, 12(r3)
ldw 12(r20), arg0
copy r19, arg1
bl _dl_bind, rp
copy r21, r19
copy ret0, r21 /* &func */
copy ret1, r19 /* sl */
ldw HPPA_FRAME_ARG(0)(r3), arg0
ldw HPPA_FRAME_ARG(1)(r3), arg1
ldw HPPA_FRAME_ARG(2)(r3), arg2
ldw HPPA_FRAME_ARG(3)(r3), arg3
ldw 4(r3), t1
ldw 8(r3), ret0
ldw 12(r3), ret1
ldw HPPA_FRAME_CRP(r3), rp
ldo HPPA_FRAME_SIZE(r3), sp
bv r0(r21)
ldwm -HPPA_FRAME_SIZE(sp), r3
EXIT(_dl_bind_start)
.end
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