ed80b9ee77
2000-07-31 Jes Sorensen <jes@linuxcare.com> * sysdeps/ia64/elf/initfini.c: Kill dummy section since align and endp statements have already been added. 2000-04-18 David Mosberger <davidm@hpl.hp.com> * sysdeps/unix/sysv/linux/ia64/sysdep.h: Include <sysdeps/ia64/sysdep.h>. * sysdeps/ia64/_mcount.S: New file. * sysdeps/ia64/elf/initfini.c (_init): Preserve gp around call to __gmon_start__. Fix up extraneous whitespace. 2000-01-12 H.J. Lu <hjl@gnu.org> * sysdeps/ia64/elf/initfini.c: New file. 2000-07-31 Jes Sorensen <jes@linuxcare.com> * sysdeps/unix/sysv/linux/ia64/clone.S: Add stop bit to avoid WAW dependency between branch and ar.pfs write.
117 lines
3 KiB
C
117 lines
3 KiB
C
/* Special .init and .fini section support for ia64.
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Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it
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and/or modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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In addition to the permissions in the GNU Library General Public
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License, the Free Software Foundation gives you unlimited
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permission to link the compiled version of this file with other
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programs, and to distribute those programs without any restriction
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coming from the use of this file. (The Library General Public
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License restrictions do apply in other respects; for example, they
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cover modification of the file, and distribution when not linked
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into another program.)
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The GNU C Library is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* This file is compiled into assembly code which is then munged by a sed
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script into two files: crti.s and crtn.s.
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* crti.s puts a function prologue at the beginning of the
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.init and .fini sections and defines global symbols for
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those addresses, so they can be called as functions.
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* crtn.s puts the corresponding function epilogues
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in the .init and .fini sections. */
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__asm__ ("
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#include \"defs.h\"
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/*@HEADER_ENDS*/
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/*@_init_PROLOG_BEGINS*/
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.section .init
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.align 16
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.global _init#
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.proc _init#
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_init:
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alloc r34 = ar.pfs, 0, 3, 0, 0
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mov r32 = r12
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mov r33 = b0
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adds r12 = -16, r12
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addl r14 = @ltoff(@fptr(__gmon_start__#)), gp
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;;
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ld8 r15 = [r14]
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;;
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cmp.eq p6, p7 = 0, r15
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(p6) br.cond.dptk .L5
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/* we could use r35 to save gp, but we use the stack since that's what
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* all the other init routines will do --davidm 00/04/05 */
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st8 [r12] = gp, -16
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br.call.sptk.many b0 = __gmon_start__# ;;
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adds r12 = 16, r12
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;;
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ld8 gp = [r12]
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;;
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.L5:
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.align 16
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.endp _init#
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/*@_init_PROLOG_ENDS*/
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/*@_init_EPILOG_BEGINS*/
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.section .init
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.regstk 0,2,0,0
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mov r12 = r32
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mov ar.pfs = r34
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mov b0 = r33
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br.ret.sptk.many b0
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.endp _init#
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/*@_init_EPILOG_ENDS*/
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/*@_fini_PROLOG_BEGINS*/
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.section .fini
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.align 16
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.global _fini#
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.proc _fini#
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_fini:
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alloc r34 = ar.pfs, 0, 3, 0, 0
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mov r32 = r12
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mov r33 = b0
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adds r12 = -16, r12
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;;
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.align 16
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.endp _fini#
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/*@_fini_PROLOG_ENDS*/
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br.call.sptk.many b0 = i_am_not_a_leaf# ;;
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;;
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/*@_fini_EPILOG_BEGINS*/
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.section .fini
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mov r12 = r32
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mov ar.pfs = r34
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mov b0 = r33
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br.ret.sptk.many b0
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.endp _fini#
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/*@_fini_EPILOG_ENDS*/
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/*@TRAILER_BEGINS*/
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.weak __gmon_start__#
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");
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