118 lines
3.4 KiB
C
118 lines
3.4 KiB
C
/* Special .init and .fini section support for HPPA
|
|
Copyright (C) 2000 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.
|
|
|
|
In addition to the permissions in the GNU Library General Public
|
|
License, the Free Software Foundation gives you unlimited
|
|
permission to link the compiled version of this file with other
|
|
programs, and to distribute those programs without any restriction
|
|
coming from the use of this file. (The Library General Public
|
|
License restrictions do apply in other respects; for example, they
|
|
cover modification of the file, and distribution when not linked
|
|
into another program.)
|
|
|
|
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, 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* This file is compiled into assembly code which is then munged by a sed
|
|
script into two files: crti.s and crtn.s.
|
|
|
|
* crti.s puts a function prologue at the beginning of the
|
|
.init and .fini sections and defines global symbols for
|
|
those addresses, so they can be called as functions.
|
|
|
|
* crtn.s puts the corresponding function epilogues
|
|
in the .init and .fini sections. */
|
|
|
|
/* If we use the standard C version, the linkage table pointer won't
|
|
be properly preserved due to the splitting up of function prologues
|
|
and epilogues. Therefore we write these in assembly to make sure
|
|
they do the right thing.
|
|
|
|
Note that we cannot have a weak undefined __gmon_start__, because
|
|
that would require this to be PIC, and the linker is currently not
|
|
able to generate a proper procedure descriptor for _init. Sad but
|
|
true. Anyway, HPPA is one of those horrible architectures where
|
|
making the comparison and indirect call is quite expensive (see the
|
|
comment in sysdeps/generic/initfini.c). */
|
|
|
|
__asm__ ("
|
|
|
|
#include \"defs.h\"
|
|
|
|
/*@HEADER_ENDS*/
|
|
|
|
/*@_init_PROLOG_BEGINS*/
|
|
.section .init
|
|
.align 4
|
|
.globl _init
|
|
.type _init,@function
|
|
.proc
|
|
.callinfo
|
|
_init:
|
|
stw %rp,-20(%sp)
|
|
stwm %r4,64(%sp)
|
|
stw %r19,-32(%sp)
|
|
bl __gmon_start__,%rp
|
|
copy %r19,%r4 /* delay slot */
|
|
copy %r4,%r19
|
|
.align 4
|
|
.procend
|
|
/*@_init_PROLOG_ENDS*/
|
|
|
|
/*@_init_EPILOG_BEGINS*/
|
|
.section .init
|
|
copy %r4,%r19
|
|
ldw -84(%sp),%rp
|
|
bv %r0(%rp)
|
|
ldwm -64(%sp),%r4
|
|
.text
|
|
.align 4
|
|
.weak __gmon_start__
|
|
.type __gmon_start__,@function
|
|
.proc
|
|
.callinfo
|
|
__gmon_start__:
|
|
bv,n %r0(%r2)
|
|
.procend
|
|
/*@_init_EPILOG_ENDS*/
|
|
|
|
/*@_fini_PROLOG_BEGINS*/
|
|
.section .fini
|
|
.align 4
|
|
.globl _fini
|
|
.type _fini,@function
|
|
.proc
|
|
.callinfo
|
|
_fini:
|
|
stw %rp,-20(%sp)
|
|
stwm %r4,64(%sp)
|
|
stw %r19,-32(%sp)
|
|
copy %r19,%r4
|
|
.align 4
|
|
.procend
|
|
/*@_fini_PROLOG_ENDS*/
|
|
|
|
/*@_fini_EPILOG_BEGINS*/
|
|
.section .fini
|
|
copy %r4,%r19
|
|
ldw -84(%sp),%rp
|
|
bv %r0(%rp)
|
|
ldwm -64(%sp),%r4
|
|
/*@_fini_EPILOG_ENDS*/
|
|
|
|
/*@TRAILER_BEGINS*/
|
|
");
|