From aba629447a4f69a120512cd991fa69656eb9ddff Mon Sep 17 00:00:00 2001 From: Michael Meissner Date: Fri, 5 Jan 1996 17:23:44 +0000 Subject: [PATCH] Add -mcpu={505,821,860} support; Fixup common mode support; Make eabi not rely on GLD From-SVN: r10943 --- gcc/config/rs6000/eabi.asm | 101 +++++++++++++++++++++++++++++++++---- 1 file changed, 92 insertions(+), 9 deletions(-) diff --git a/gcc/config/rs6000/eabi.asm b/gcc/config/rs6000/eabi.asm index b5cf5c5f131..23199980ec6 100644 --- a/gcc/config/rs6000/eabi.asm +++ b/gcc/config/rs6000/eabi.asm @@ -1,3 +1,39 @@ +/* + * special support for eabi + * + * Copyright (C) 1995, 1996 Free Software Foundation, Inc. + * Written By Michael Meissner + * + * This file is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * In addition to the permissions in the GNU 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 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.) + * + * This file 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; see the file COPYING. If not, write to + * the Free Software Foundation, 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + * + * As a special exception, if you link this library with files + * compiled with GCC to produce an executable, this does not cause + * the resulting executable to be covered by the GNU General Public License. + * This exception does not however invalidate any other reasons why + * the executable file might be covered by the GNU General Public License. + */ + /* Do any initializations needed for the eabi environment */ .file "eabi.asm" @@ -15,22 +51,34 @@ .long _GLOBAL_OFFSET_TABLE_ /* normal GOT address */ .Lgots = .-.LCTOC1 - .long _GOT_START_ /* start of .got section */ + .long __GOT_START__ /* start of .got section */ .Lgote = .-.LCTOC1 - .long _GOT_END_ /* end of .got section */ + .long __GOT_END__ /* end of .got section */ .Lgot2s = .-.LCTOC1 - .long _GOT2_START_ /* -mrelocatable GOT pointers start */ + .long __GOT2_START__ /* -mrelocatable GOT pointers start */ .Lgot2e = .-.LCTOC1 - .long _GOT2_END_ /* -mrelocatable GOT pointers end */ + .long __GOT2_END__ /* -mrelocatable GOT pointers end */ .Lfixups = .-.LCTOC1 - .long _FIXUP_START_ /* start of .fixup section */ + .long __FIXUP_START__ /* start of .fixup section */ .Lfixupe = .-.LCTOC1 - .long _FIXUP_END_ /* end of .fixup section */ + .long __FIXUP_END__ /* end of .fixup section */ + +.Lctors = .-.LCTOC1 + .long __CTOR_LIST__ /* start of .ctor section */ + +.Lctore = .-.LCTOC1 + .long __CTOR_END__ /* end of .ctor section */ + +.Ldtors = .-.LCTOC1 + .long __DTOR_LIST__ /* start of .dtor section */ + +.Ldtore = .-.LCTOC1 + .long __DTOR_END__ /* end of .dtor section */ .text .Lptr: @@ -70,7 +118,7 @@ FUNC_START(__eabi) add 4,12,4 cmpw 1,3,4 /* any pointers to adjust */ - bc 12,6,.Lfix + bc 12,6,.Lctor .Lloop: lwz 5,0(3) /* next pointer */ @@ -80,9 +128,42 @@ FUNC_START(__eabi) cmpw 1,3,4 /* more pointers to adjust? */ bc 4,6,.Lloop +/* Fixup the .ctor section for static constructors */ + +.Lctor: + lwz 3,.Lctors(11) /* constructors pointers start */ + lwz 4,.Lctore(11) /* constructors pointers end */ + + cmpw 1,3,4 /* any pointers to adjust */ + bc 12,6,.Ldtor + +.Lcloop: + lwz 5,0(3) /* next pointer */ + add 5,5,12 /* adjust */ + stw 5,0(3) + addi 3,3,4 /* bump to next word */ + cmpw 1,3,4 /* more pointers to adjust? */ + bc 4,6,.Lcloop + +/* Fixup the .dtor section for static destructors */ + +.Ldtor: + lwz 3,.Ldtors(11) /* destructors pointers start */ + lwz 4,.Ldtore(11) /* destructors pointers end */ + + cmpw 1,3,4 /* any pointers to adjust */ + bc 12,6,.Lfix + +.Ldloop: + lwz 5,0(3) /* next pointer */ + add 5,5,12 /* adjust */ + stw 5,0(3) + addi 3,3,4 /* bump to next word */ + cmpw 1,3,4 /* more pointers to adjust? */ + bc 4,6,.Ldloop + /* Fixup any user initialized pointers now (the compiler drops pointers to */ -/* each of the relocs that it does in the .fixup section). Note, the pointers */ -/* themselves have already been fixed up by the previous loop. */ +/* each of the relocs that it does in the .fixup section). */ .Lfix: lwz 3,.Lfixups(11) /* fixup pointers start */ @@ -93,7 +174,9 @@ FUNC_START(__eabi) .Lfloop: lwz 5,0(3) /* next pointer */ + add 5,5,12 /* adjust pointer */ lwz 6,0(5) /* get the pointer it points to */ + stw 5,0(3) /* store adjusted pointer */ add 6,6,12 /* adjust */ stw 6,0(5) addi 3,3,4 /* bump to next word */ -- 2.30.2