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.
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Roland McGrath
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ChangeLog
26
ChangeLog
@ -1,3 +1,29 @@
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Tue Feb 21 00:10:50 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* csu/Makefile (crtstuff): New variable consolidates crti, crtn;
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add crti_s, crtn_s.
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(install-lib, extra-objs, generated-, omit-deps): Use that.
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(initfini): New canned sequence, broken out of crt[in].s rule.
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(crt[in].s rule): Use it.
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(crt[in]_s.s): New rule.
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* csu/initfini.c (GLOBAL): New macro; define it to empty if undefined.
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(_init, _fini): Use GLOBAL as storage class.
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Add self reference to avoid GCC optimizing out the functions.
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* Makefile (headers): Remove $(stddef.h).
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* Makeconfig (stddef.h): Variable removed; now require gcc version
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>= 2.2.
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* stddef.h: File removed.
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Mon Feb 20 19:42:31 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>
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* sysdeps/unix/bsd/ultrix4/mips/start.S: Remove `__environ'
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definition.
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* sysdeps/unix/bsd/osf1/alpha/start.S: Likewise.
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* stdlib/strtod.c: Allow the string to start with a decimal point
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without a leading zero.
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Mon Feb 20 04:04:57 1995 Roland McGrath <roland@duality.gnu.ai.mit.edu>
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* Makefile (subdirs): Put csu first.
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@ -134,12 +134,6 @@ ifndef includedir
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includedir = $(exec_prefix)/include
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endif
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# Define if the library should install its own <stddef.h>.
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# Do this unless you are using version 2.2 or later of GCC.
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ifndef stddef.h
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stddef.h = stddef.h
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endif
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# Where to install machine-independent data files.
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# These are the timezone database, and eventually the locale database.
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ifndef datadir
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2
Makefile
2
Makefile
@ -79,7 +79,7 @@ subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \
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no-libc.a bin lib \
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data headers others)
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headers := features.h errno.h sys/errno.h errnos.h limits.h $(stddef.h)
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headers := features.h errno.h sys/errno.h errnos.h limits.h
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aux = sysdep $(libc-init) version
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echo-headers: subdir_echo-headers
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48
csu/Makefile
48
csu/Makefile
@ -39,33 +39,51 @@ all: # Make this the default target; it will be defined in Rules.
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include ../Makeconfig
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ifneq ($(elf),yes)
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# When not using ELF, there is just one startfile, called crt0.o.
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start-installed-name = crt0.o
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else
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# In the ELF universe, crt0.o is called crt1.o, and there are
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# some additional bizarre files.
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start-installed-name = crt1.o
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install-lib += crti.o crtn.o
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extra-objs += crti.o crtn.o
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generated += crti.s crtn.s
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omit-deps += crti crtn
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# These are the special initializer/finalizer files. They are always the
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# first and last file in the link. crti.o ... crtn.o are used for normal
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# linking; they define the global "functions" _init and _fini to run the
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# .init and .fini sections. crti_s.o ... crtn_s.o are for making shared
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# library objects; they put the prologue/epilogue code into the .init and
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# .fini sections, but define no global symbols.
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crtstuff = crti crtn crti_s crtn_s
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install-lib += $(crtstuff:=.o)
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extra-objs += $(crtstuff:=.o)
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generated += $(crtstuff:=.s)
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omit-deps += $(crtstuff)
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# Compile initfini.c to assembly code, which contains embedded shell
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# commands that prodice crti.s-new and crtn.s-new when run. We need to
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# disable emission of .size directives and debugging information, since
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# they will get confused by the splitting of the output we do.
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$(objpfx)cr%i.s $(objpfx)cr%n.s: initfini.c
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-rm -f $(objpfx)crtcommon.tmp
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(echo 'cat > crtcommon.tmp <<\EOF_common'; \
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$(CC) $< $(CPPFLAGS) $(CFLAGS) -finhibit-size-directive -g0 -S -o -; \
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echo 'EOF_common') | (cd $(@D); $(SHELL))
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cat $(objpfx)crtcommon.tmp >> $(objpfx)crti.s-new
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cat $(objpfx)crtcommon.tmp >> $(objpfx)crtn.s-new
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rm -f $(objpfx)crtcommon.tmp
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mv -f $(objpfx)crti.s-new $(objpfx)crti.s
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mv -f $(objpfx)crtn.s-new $(objpfx)crtn.s
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endif
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$(objpfx)cr%i.s $(objpfx)cr%n.s: initfini.c; $(initfini)
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$(objpfx)cr%i_s.s $(objpfx)cr%n_s.s: initfini.c; $(initfini)
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define initfini
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-rm -f $(objpfx)crtcommon.tmp
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(echo 'cat > crtcommon.tmp <<\EOF_common'; \
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$(CC) $< $(CPPFLAGS) $(CFLAGS) \
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$(patsubst %,-DGLOBAL=static,$(filter %_s.s,$@)) \
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-finhibit-size-directive -g0 -S -o -; \
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echo 'EOF_common') | (cd $(@D); $(SHELL))
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cat $(objpfx)crtcommon.tmp >> $(objpfx)crti.s-new
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cat $(objpfx)crtcommon.tmp >> $(objpfx)crtn.s-new
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rm -f $(objpfx)crtcommon.tmp
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mv -f $(objpfx)crti.s-new $(subst crtn,crti,$@)
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mv -f $(objpfx)crtn.s-new $(subst crti,crtn,$@)
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endef
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endif
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include ../Rules
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@ -34,11 +34,18 @@ Cambridge, MA 02139, USA. */
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#include <stdlib.h>
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/* We are compiled with -DGLOBAL=static to generate the versions used for
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shared libraries' .init and .fini sections, which do not have entry
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point symbols. */
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#ifndef GLOBAL
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#define GLOBAL
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#endif
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/* These declarations make the functions go in the right sections when
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we define them below. GCC syntax does not allow the attribute
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specifications to be in the function definitions themselves. */
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void _init (void) __attribute__ ((section (".init")));
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void _fini (void) __attribute__ ((section (".fini")));
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GLOBAL void _init (void) __attribute__ ((section (".init")));
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GLOBAL void _fini (void) __attribute__ ((section (".fini")));
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/* End the here document containing the initial common code.
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Then move the output file crtcommon.tmp to crti.s-new and crtn.s-new. */
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@ -48,9 +55,10 @@ cp -f crti.s-new crtn.s-new");
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/* Append the .init prologue to crti.s-new. */
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asm ("cat >> crti.s-new <<\\EOF.crti.init");
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void
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GLOBAL void
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_init (void)
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{
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(void) &_init; /* Don't optimize out the function! */
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/* End the here document containing the .init prologue code.
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Then fetch the .section directive just written and append that
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to crtn.s-new, followed by the function epilogue. */
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@ -66,9 +74,10 @@ asm ("\nEOF.crtn.init\
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\n\
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cat >> crti.s-new <<\\EOF.crti.fini");
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void
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GLOBAL void
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_fini (void)
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{
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(void) &_fini; /* Don't optimize out the function! */
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/* End the here document containing the .fini prologue code.
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Then fetch the .section directive just written and append that
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to crtn.s-new, followed by the function epilogue. */
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@ -396,7 +396,7 @@ STRTOF (nptr, endptr)
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/* Return 0.0 if no legal string is found.
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No character is used even if a sign was found. */
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if (!isdigit (c))
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if (!isdigit (c) && (c != decimal || !isdigit (cp[1])))
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RETURN (0.0, nptr);
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/* Record the start of the digits, in case we will check their grouping. */
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@ -18,13 +18,6 @@ Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#ifndef HAVE_WEAK_SYMBOLS
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#define __environ environ
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#else
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weak_alias (__environ, environ)
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#endif
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.comm __environ, 8
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.comm errno, 4
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!.sdata
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@ -18,13 +18,6 @@ Cambridge, MA 02139, USA. */
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#include <sysdep.h>
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#ifndef HAVE_WEAK_SYMBOLS
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#define __environ environ
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#else
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weak_alias (__environ, environ)
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#endif
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.comm __environ, 4
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.comm errno, 4
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ENTRY(__start)
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@ -35,11 +35,8 @@ weak_alias (__data_start, data_start)
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#define DECL_DUMMIES
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#endif
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VOLATILE int errno;
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#ifndef HAVE_WEAK_SYMBOLS
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#undef environ
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#define __environ environ
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#ifndef errno
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volatile int errno;
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#endif
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extern void EXFUN(__libc_init, (int argc, char **argv, char **envp));
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@ -66,11 +63,10 @@ DEFUN_VOID(_start)
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start1();
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}
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#if !defined (NO_UNDERSCORES) && defined (HAVE_GNU_LD) && !defined (__GNUC__)
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#if !defined (NO_UNDERSCORES) && defined (HAVE_WEAK_SYMBOLS)
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/* Make an alias called `start' (no leading underscore,
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so it can't conflict with C symbols) for `_start'. */
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asm(".stabs \"start\",11,0,0,0");
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asm(".stabs \"__start\",1,0,0,0");
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asm (".weak start; start = _start");
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#endif
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#endif
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