diff options
| -rw-r--r-- | ChangeLog | 26 | ||||
| -rw-r--r-- | Makeconfig | 6 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | csu/Makefile | 48 | ||||
| -rw-r--r-- | csu/initfini.c | 17 | ||||
| -rw-r--r-- | stdlib/strtod.c | 2 | ||||
| -rw-r--r-- | sysdeps/unix/bsd/Attic/osf1/alpha/start.S | 7 | ||||
| -rw-r--r-- | sysdeps/unix/bsd/ultrix4/mips/start.S | 7 | ||||
| -rw-r--r-- | sysdeps/unix/start.c | 12 |
9 files changed, 78 insertions, 49 deletions
@@ -1,3 +1,29 @@ +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. + Mon Feb 20 04:04:57 1995 Roland McGrath <roland@duality.gnu.ai.mit.edu> * Makefile (subdirs): Put csu first. diff --git a/Makeconfig b/Makeconfig index 48a4a95ef8..4cd8061e3c 100644 --- a/Makeconfig +++ b/Makeconfig @@ -134,12 +134,6 @@ ifndef includedir includedir = $(exec_prefix)/include endif -# Define if the library should install its own <stddef.h>. -# Do this unless you are using version 2.2 or later of GCC. -ifndef stddef.h -stddef.h = stddef.h -endif - # Where to install machine-independent data files. # These are the timezone database, and eventually the locale database. ifndef datadir @@ -79,7 +79,7 @@ subdirs := $(filter mach,$(subdirs)) $(filter hurd,$(subdirs)) \ no-libc.a bin lib \ data headers others) -headers := features.h errno.h sys/errno.h errnos.h limits.h $(stddef.h) +headers := features.h errno.h sys/errno.h errnos.h limits.h aux = sysdep $(libc-init) version echo-headers: subdir_echo-headers diff --git a/csu/Makefile b/csu/Makefile index 6de77b768c..4943087203 100644 --- a/csu/Makefile +++ b/csu/Makefile @@ -39,33 +39,51 @@ all: # Make this the default target; it will be defined in Rules. include ../Makeconfig ifneq ($(elf),yes) + # When not using ELF, there is just one startfile, called crt0.o. start-installed-name = crt0.o + else + # In the ELF universe, crt0.o is called crt1.o, and there are # some additional bizarre files. start-installed-name = crt1.o -install-lib += crti.o crtn.o -extra-objs += crti.o crtn.o -generated += crti.s crtn.s -omit-deps += crti crtn + +# These are the special initializer/finalizer files. They are always the +# first and last file in the link. crti.o ... crtn.o are used for normal +# linking; they define the global "functions" _init and _fini to run the +# .init and .fini sections. crti_s.o ... crtn_s.o are for making shared +# library objects; they put the prologue/epilogue code into the .init and +# .fini sections, but define no global symbols. +crtstuff = crti crtn crti_s crtn_s + +install-lib += $(crtstuff:=.o) +extra-objs += $(crtstuff:=.o) +generated += $(crtstuff:=.s) +omit-deps += $(crtstuff) # Compile initfini.c to assembly code, which contains embedded shell # commands that prodice crti.s-new and crtn.s-new when run. We need to # disable emission of .size directives and debugging information, since # they will get confused by the splitting of the output we do. -$(objpfx)cr%i.s $(objpfx)cr%n.s: initfini.c - -rm -f $(objpfx)crtcommon.tmp - (echo 'cat > crtcommon.tmp <<\EOF_common'; \ - $(CC) $< $(CPPFLAGS) $(CFLAGS) -finhibit-size-directive -g0 -S -o -; \ - echo 'EOF_common') | (cd $(@D); $(SHELL)) - cat $(objpfx)crtcommon.tmp >> $(objpfx)crti.s-new - cat $(objpfx)crtcommon.tmp >> $(objpfx)crtn.s-new - rm -f $(objpfx)crtcommon.tmp - mv -f $(objpfx)crti.s-new $(objpfx)crti.s - mv -f $(objpfx)crtn.s-new $(objpfx)crtn.s -endif +$(objpfx)cr%i.s $(objpfx)cr%n.s: initfini.c; $(initfini) +$(objpfx)cr%i_s.s $(objpfx)cr%n_s.s: initfini.c; $(initfini) + +define initfini +-rm -f $(objpfx)crtcommon.tmp +(echo 'cat > crtcommon.tmp <<\EOF_common'; \ + $(CC) $< $(CPPFLAGS) $(CFLAGS) \ + $(patsubst %,-DGLOBAL=static,$(filter %_s.s,$@)) \ + -finhibit-size-directive -g0 -S -o -; \ + echo 'EOF_common') | (cd $(@D); $(SHELL)) +cat $(objpfx)crtcommon.tmp >> $(objpfx)crti.s-new +cat $(objpfx)crtcommon.tmp >> $(objpfx)crtn.s-new +rm -f $(objpfx)crtcommon.tmp +mv -f $(objpfx)crti.s-new $(subst crtn,crti,$@) +mv -f $(objpfx)crtn.s-new $(subst crti,crtn,$@) +endef +endif include ../Rules diff --git a/csu/initfini.c b/csu/initfini.c index ea16e62ffe..bfd120b7ef 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. */ diff --git a/stdlib/strtod.c b/stdlib/strtod.c index 6bd2dd685a..989984e66d 100644 --- a/stdlib/strtod.c +++ b/stdlib/strtod.c @@ -396,7 +396,7 @@ STRTOF (nptr, endptr) /* Return 0.0 if no legal string is found. No character is used even if a sign was found. */ - if (!isdigit (c)) + if (!isdigit (c) && (c != decimal || !isdigit (cp[1]))) RETURN (0.0, nptr); /* Record the start of the digits, in case we will check their grouping. */ diff --git a/sysdeps/unix/bsd/Attic/osf1/alpha/start.S b/sysdeps/unix/bsd/Attic/osf1/alpha/start.S index 8b7109a512..52eb03667f 100644 --- a/sysdeps/unix/bsd/Attic/osf1/alpha/start.S +++ b/sysdeps/unix/bsd/Attic/osf1/alpha/start.S @@ -18,13 +18,6 @@ Cambridge, MA 02139, USA. */ #include <sysdep.h> -#ifndef HAVE_WEAK_SYMBOLS -#define __environ environ -#else -weak_alias (__environ, environ) -#endif - -.comm __environ, 8 .comm errno, 4 !.sdata diff --git a/sysdeps/unix/bsd/ultrix4/mips/start.S b/sysdeps/unix/bsd/ultrix4/mips/start.S index ec0f9d833d..eec8ce08be 100644 --- a/sysdeps/unix/bsd/ultrix4/mips/start.S +++ b/sysdeps/unix/bsd/ultrix4/mips/start.S @@ -18,13 +18,6 @@ Cambridge, MA 02139, USA. */ #include <sysdep.h> -#ifndef HAVE_WEAK_SYMBOLS -#define __environ environ -#else -weak_alias (__environ, environ) -#endif - -.comm __environ, 4 .comm errno, 4 ENTRY(__start) diff --git a/sysdeps/unix/start.c b/sysdeps/unix/start.c index feb5f44fb8..62c9bd9f38 100644 --- a/sysdeps/unix/start.c +++ b/sysdeps/unix/start.c @@ -35,11 +35,8 @@ weak_alias (__data_start, data_start) #define DECL_DUMMIES #endif -VOLATILE int errno; - -#ifndef HAVE_WEAK_SYMBOLS -#undef environ -#define __environ environ +#ifndef errno +volatile int errno; #endif extern void EXFUN(__libc_init, (int argc, char **argv, char **envp)); @@ -66,11 +63,10 @@ DEFUN_VOID(_start) start1(); } -#if !defined (NO_UNDERSCORES) && defined (HAVE_GNU_LD) && !defined (__GNUC__) +#if !defined (NO_UNDERSCORES) && defined (HAVE_WEAK_SYMBOLS) /* Make an alias called `start' (no leading underscore, so it can't conflict with C symbols) for `_start'. */ -asm(".stabs \"start\",11,0,0,0"); -asm(".stabs \"__start\",1,0,0,0"); +asm (".weak start; start = _start"); #endif #endif |