Add -mcpu={505,821,860} support; Fixup common mode support; Make eabi not rely on GLD

From-SVN: r10943

diff --git a/gcc/config/rs6000/eabi.asm b/gcc/config/rs6000/eabi.asm
index b5cf5c5f131fd5c92984ef2cd3fe5b7e6f0559ce..23199980ec695f0c2d2d78b394aa7a0f6ff77f53 100644 (file)
--- 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 */