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/* Prepare arguments for library initialization function.
Copyright (C) 1997 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* The job of this fragment it to find argc and friends for INIT.
This is done in one of two ways: either in the stack context
of program start, or having dlopen pass them in. */
#include <sysdep.h>
#define __S1(x) #x
#define __S(x) __S1(x)
#ifdef PIC
#define SYSDEP_CALL_INIT(NAME, INIT) asm("\
.weak _dl_starting_up
.global " #NAME "
.type " #NAME ",@function
" #NAME ":
save %sp, -64, %sp
1: rd %pc, %g1
sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7
or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7
add %l7, %o7, %l7
/* Are we a dynamic libc being loaded into a static program? */
sethi %hi(_dl_starting_up), %g2
or %g2, %lo(_dl_starting_up), %g2
ld [%l7+%g2], %g2
brz,pn %g2, 3f
sethi %hi(__libc_multiple_libcs), %g3
ld [%g2], %g2
subcc %g0, %g2, %g0
subc %g0, -1, %g2
3: or %g3, %lo(__libc_multiple_libcs), %g3
ld [%l7+%g3], %g3
st %g2, [%g3]
/* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */
brnz,pn %g2, " #INIT "
restore
ld [%sp+" __S(STACK_BIAS) "+22*8], %o0
add %sp, " __S(STACK_BIAS) "+23*8, %o1
sll %o0, 3, %o2
add %o2, %o1, %o2
add %o2, 8, %o2
ba,a " #INIT "
.size "#NAME " .-" #NAME);
#else
#define SYSDEP_CALL_INIT(NAME, INIT) asm("\
.weak _dl_starting_up
.global " #NAME "
.type " #NAME ",@function
" #NAME ":
/* Are we a dynamic libc being loaded into a static program? */
sethi %hi(_dl_starting_up), %g2
or %g2, %lo(_dl_starting_up), %g2
brz,pt %g2, 3f
sethi %hi(__libc_multiple_libcs), %g3
ld [%g4+%g2], %g2
subcc %g0, %g2, %g0
subc %g0, -1, %g2
3: add %g3, %g4, %g3
st %g2, [%g3+%lo(__libc_multiple_libcs)]
/* If so, argc et al are in %o0-%o2 already. Otherwise, load them. */
brnz,pn %g2, " #INIT "
nop
ld [%sp+" __S(STACK_BIAS) "+22*8], %o0
add %sp, " __S(STACK_BIAS) "+23*8, %o1
sll %o0, 3, %o2
add %o2, %o1, %o2
add %o2, 8, %o2
ba,a " #INIT "
.size "#NAME ", .-" #NAME);
#endif
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