2009-03-02 Daniel Hellstrom <daniel@gaisler.com>

	PR 1390/bsps
	* startup/linkcmds: Fix sections so C++ global constructors and
	destructors work with late model (>= 4.3) gcc versions.

1 files changed, 23 insertions, 12 deletions

diff --git a/c/src/lib/libbsp/sparc/erc32/startup/linkcmds b/c/src/lib/libbsp/sparc/erc32/startup/linkcmds
index 2ea6cd8bbd..65b31a7b6c 100644
--- a/c/src/lib/libbsp/sparc/erc32/startup/linkcmds
+++ b/c/src/lib/libbsp/sparc/erc32/startup/linkcmds
@@ -94,13 +94,11 @@ SECTIONS
   .text :
   {
     CREATE_OBJECT_SYMBOLS
-    start = .;
     text_start = .;
     _text_start = .;
     *(.text*)
     . = ALIGN (16);
 
-
     /*
      * Special FreeBSD sysctl sections.
      */
@@ -119,16 +117,29 @@ SECTIONS
     /*
      * C++ constructors
      */
-    __CTOR_LIST__ = .;
-    LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2)
-    *(.ctors)
-    LONG(0)
-    __CTOR_END__ = .;
-    __DTOR_LIST__ = .;
-    LONG((__DTOR_END__ - __DTOR_LIST__) / 4 - 2)
-    *(.dtors)
-    LONG(0)
-    __DTOR_END__ = .;
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*crtbegin?.o(.ctors))
+    /* We don't want to include the .ctor section from
+       the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*crtbegin?.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
 
     _rodata_start = . ;
     *(.rodata*)