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authorRoland McGrath <roland@gnu.org>1995-02-21 06:02:58 +0000
committerRoland McGrath <roland@gnu.org>1995-02-21 06:02:58 +0000
commit37f91d336d8d93b1416c121627ffe88e548b251d (patch)
treea97e2e6f7a060d404c43bbc9ae12f0685f35f1fd /csu/initfini.c
parent41d43dbce0b5df750abf709a793195471b4c55e8 (diff)
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Tue Feb 21 00:10:50 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
* csu/Makefile (crtstuff): New variable consolidates crti, crtn; add crti_s, crtn_s. (install-lib, extra-objs, generated-, omit-deps): Use that. (initfini): New canned sequence, broken out of crt[in].s rule. (crt[in].s rule): Use it. (crt[in]_s.s): New rule. * csu/initfini.c (GLOBAL): New macro; define it to empty if undefined. (_init, _fini): Use GLOBAL as storage class. Add self reference to avoid GCC optimizing out the functions. * Makefile (headers): Remove $(stddef.h). * Makeconfig (stddef.h): Variable removed; now require gcc version >= 2.2. * stddef.h: File removed. Mon Feb 20 19:42:31 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> * sysdeps/unix/bsd/ultrix4/mips/start.S: Remove `__environ' definition. * sysdeps/unix/bsd/osf1/alpha/start.S: Likewise. * stdlib/strtod.c: Allow the string to start with a decimal point without a leading zero.
Diffstat (limited to 'csu/initfini.c')
-rw-r--r--csu/initfini.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/csu/initfini.c b/csu/initfini.c
index ea16e62..bfd120b 100644
--- a/csu/initfini.c
+++ b/csu/initfini.c
@@ -34,11 +34,18 @@ Cambridge, MA 02139, USA. */
#include <stdlib.h>
+/* We are compiled with -DGLOBAL=static to generate the versions used for
+ shared libraries' .init and .fini sections, which do not have entry
+ point symbols. */
+#ifndef GLOBAL
+#define GLOBAL
+#endif
+
/* These declarations make the functions go in the right sections when
we define them below. GCC syntax does not allow the attribute
specifications to be in the function definitions themselves. */
-void _init (void) __attribute__ ((section (".init")));
-void _fini (void) __attribute__ ((section (".fini")));
+GLOBAL void _init (void) __attribute__ ((section (".init")));
+GLOBAL void _fini (void) __attribute__ ((section (".fini")));
/* End the here document containing the initial common code.
Then move the output file crtcommon.tmp to crti.s-new and crtn.s-new. */
@@ -48,9 +55,10 @@ cp -f crti.s-new crtn.s-new");
/* Append the .init prologue to crti.s-new. */
asm ("cat >> crti.s-new <<\\EOF.crti.init");
-void
+GLOBAL void
_init (void)
{
+ (void) &_init; /* Don't optimize out the function! */
/* End the here document containing the .init prologue code.
Then fetch the .section directive just written and append that
to crtn.s-new, followed by the function epilogue. */
@@ -66,9 +74,10 @@ asm ("\nEOF.crtn.init\
\n\
cat >> crti.s-new <<\\EOF.crti.fini");
-void
+GLOBAL void
_fini (void)
{
+ (void) &_fini; /* Don't optimize out the function! */
/* End the here document containing the .fini prologue code.
Then fetch the .section directive just written and append that
to crtn.s-new, followed by the function epilogue. */