From: Andreas Schwab Date: Wed, 8 Feb 2012 12:35:50 +0000 (+0100) Subject: m68k: add crt files X-Git-Tag: glibc-2.16-ports-before-merge~292 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=06285c87857a33930a8e3c4b1ca5226b28130864;p=thirdparty%2Fglibc.git m68k: add crt files --- diff --git a/ChangeLog.m68k b/ChangeLog.m68k index 78f718fe371..7eace9206d3 100644 --- a/ChangeLog.m68k +++ b/ChangeLog.m68k @@ -1,5 +1,8 @@ 2012-02-08 Andreas Schwab + * sysdeps/m68k/crti.S: New file. + * sysdeps/m68k/crtn.S: New file. + * sysdeps/m68k/m680x0/sysdep.h (LOAD_GOT): Define. * sysdeps/m68k/coldfire/sysdep.h (LOAD_GOT): Define. * sysdeps/unix/sysv/linux/m68k/coldfire/m68k-helper.S: Remove. diff --git a/sysdeps/m68k/crti.S b/sysdeps/m68k/crti.S new file mode 100644 index 00000000000..138bb02b524 --- /dev/null +++ b/sysdeps/m68k/crti.S @@ -0,0 +1,83 @@ +/* Special .init and .fini section support for m68k. + Copyright (C) 2012 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* 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. The symbols _init and _fini are + magic and cause the linker to emit DT_INIT and DT_FINI. */ + +#include +#include + +#ifndef PREINIT_FUNCTION +# define PREINIT_FUNCTION __gmon_start__ +#endif + +#ifndef PREINIT_FUNCTION_WEAK +# define PREINIT_FUNCTION_WEAK 1 +#endif + +#if PREINIT_FUNCTION_WEAK + weak_extern (PREINIT_FUNCTION) +#else + .hidden PREINIT_FUNCTION +#endif + + .section .init,"ax",@progbits + .align 2 + .globl _init + .type _init, @function +_init: + link.w %fp, #0 + move.l %a5, -(%sp) + LOAD_GOT (%a5) +#if PREINIT_FUNCTION_WEAK + tst.l PREINIT_FUNCTION@GOT(%a5) + jeq 1f + jbsr PREINIT_FUNCTION@PLTPC +1: +#else + jbsr PREINIT_FUNCTION +#endif + + .section .fini,"ax",@progbits + .align 2 + .globl _fini + .type _fini, @function +_fini: + link.w %fp, #0 + move.l %a5, -(%sp) + LOAD_GOT (%a5) diff --git a/sysdeps/m68k/crtn.S b/sysdeps/m68k/crtn.S new file mode 100644 index 00000000000..7e76d775d6b --- /dev/null +++ b/sysdeps/m68k/crtn.S @@ -0,0 +1,48 @@ +/* Special .init and .fini section support for m68k. + Copyright (C) 2012 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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + In addition to the permissions in the GNU Lesser 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 GNU Lesser 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.) + + Note that people who make modified versions of this file are not + obligated to grant this special exception for their modified + versions; it is their choice whether to do so. The GNU Lesser + General Public License gives permission to release a modified + version without this exception; this exception also makes it + possible to release a modified version which carries forward this + exception. + + 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* crtn.S puts function epilogues in the .init and .fini sections + corresponding to the prologues in crti.S. */ + + .section .init,"ax",@progbits + move.l -4(%fp), %a5 + unlk %fp + rts + + .section .fini,"ax",@progbits + move.l -4(%fp), %a5 + unlk %fp + rts