Add -mcpu={505,821,860} support; Fixup common mode support; Make eabi not rely on GLD
From-SVN: r10943
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Michael Meissner
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cf27b46744
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aba629447a
@ -1,3 +1,39 @@
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/*
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* special support for eabi
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*
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* Copyright (C) 1995, 1996 Free Software Foundation, Inc.
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* Written By Michael Meissner
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*
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* This file is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* In addition to the permissions in the GNU General Public License, the
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* Free Software Foundation gives you unlimited permission to link the
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* compiled version of this file with other programs, and to distribute
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* those programs without any restriction coming from the use of this
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* file. (The General Public License restrictions do apply in other
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* respects; for example, they cover modification of the file, and
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* distribution when not linked into another program.)
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*
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* As a special exception, if you link this library with files
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* compiled with GCC to produce an executable, this does not cause
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* the resulting executable to be covered by the GNU General Public License.
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*/
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/* Do any initializations needed for the eabi environment */
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.file "eabi.asm"
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@ -15,22 +51,34 @@
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.long _GLOBAL_OFFSET_TABLE_ /* normal GOT address */
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.Lgots = .-.LCTOC1
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.long _GOT_START_ /* start of .got section */
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.long __GOT_START__ /* start of .got section */
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.Lgote = .-.LCTOC1
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.long _GOT_END_ /* end of .got section */
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.long __GOT_END__ /* end of .got section */
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.Lgot2s = .-.LCTOC1
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.long _GOT2_START_ /* -mrelocatable GOT pointers start */
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.long __GOT2_START__ /* -mrelocatable GOT pointers start */
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.Lgot2e = .-.LCTOC1
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.long _GOT2_END_ /* -mrelocatable GOT pointers end */
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.long __GOT2_END__ /* -mrelocatable GOT pointers end */
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.Lfixups = .-.LCTOC1
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.long _FIXUP_START_ /* start of .fixup section */
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.long __FIXUP_START__ /* start of .fixup section */
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.Lfixupe = .-.LCTOC1
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.long _FIXUP_END_ /* end of .fixup section */
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.long __FIXUP_END__ /* end of .fixup section */
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.Lctors = .-.LCTOC1
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.long __CTOR_LIST__ /* start of .ctor section */
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.Lctore = .-.LCTOC1
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.long __CTOR_END__ /* end of .ctor section */
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.Ldtors = .-.LCTOC1
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.long __DTOR_LIST__ /* start of .dtor section */
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.Ldtore = .-.LCTOC1
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.long __DTOR_END__ /* end of .dtor section */
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.text
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.Lptr:
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@ -70,7 +118,7 @@ FUNC_START(__eabi)
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add 4,12,4
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cmpw 1,3,4 /* any pointers to adjust */
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bc 12,6,.Lfix
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bc 12,6,.Lctor
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.Lloop:
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lwz 5,0(3) /* next pointer */
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@ -80,9 +128,42 @@ FUNC_START(__eabi)
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cmpw 1,3,4 /* more pointers to adjust? */
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bc 4,6,.Lloop
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/* Fixup the .ctor section for static constructors */
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.Lctor:
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lwz 3,.Lctors(11) /* constructors pointers start */
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lwz 4,.Lctore(11) /* constructors pointers end */
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cmpw 1,3,4 /* any pointers to adjust */
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bc 12,6,.Ldtor
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.Lcloop:
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lwz 5,0(3) /* next pointer */
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add 5,5,12 /* adjust */
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stw 5,0(3)
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addi 3,3,4 /* bump to next word */
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cmpw 1,3,4 /* more pointers to adjust? */
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bc 4,6,.Lcloop
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/* Fixup the .dtor section for static destructors */
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.Ldtor:
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lwz 3,.Ldtors(11) /* destructors pointers start */
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lwz 4,.Ldtore(11) /* destructors pointers end */
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cmpw 1,3,4 /* any pointers to adjust */
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bc 12,6,.Lfix
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.Ldloop:
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lwz 5,0(3) /* next pointer */
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add 5,5,12 /* adjust */
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stw 5,0(3)
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addi 3,3,4 /* bump to next word */
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cmpw 1,3,4 /* more pointers to adjust? */
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bc 4,6,.Ldloop
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/* Fixup any user initialized pointers now (the compiler drops pointers to */
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/* each of the relocs that it does in the .fixup section). Note, the pointers */
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/* themselves have already been fixed up by the previous loop. */
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/* each of the relocs that it does in the .fixup section). */
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.Lfix:
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lwz 3,.Lfixups(11) /* fixup pointers start */
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@ -93,7 +174,9 @@ FUNC_START(__eabi)
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.Lfloop:
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lwz 5,0(3) /* next pointer */
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add 5,5,12 /* adjust pointer */
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lwz 6,0(5) /* get the pointer it points to */
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stw 5,0(3) /* store adjusted pointer */
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add 6,6,12 /* adjust */
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stw 6,0(5)
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addi 3,3,4 /* bump to next word */
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