From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id DCDBC3839C6E; Thu, 12 May 2022 19:28:16 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org DCDBC3839C6E Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Adhemerval Zanella To: glibc-cvs@sourceware.org Subject: [glibc/azanella/clang] stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c X-Act-Checkin: glibc X-Git-Author: Adhemerval Zanella X-Git-Refname: refs/heads/azanella/clang X-Git-Oldrev: f87bd8b5874de683421fa1b17d09826a4aa22e18 X-Git-Newrev: bd432adf9958148c77d2322b2fe382268342b0ba Message-Id: <20220512192816.DCDBC3839C6E@sourceware.org> Date: Thu, 12 May 2022 19:28:16 +0000 (GMT) X-BeenThere: glibc-cvs@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Glibc-cvs mailing list List-Unsubscribe: , List-Archive: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 12 May 2022 19:28:17 -0000 https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=bd432adf9958148c77d2322b2fe382268342b0ba commit bd432adf9958148c77d2322b2fe382268342b0ba Author: Adhemerval Zanella Date: Thu Apr 7 17:15:56 2022 -0300 stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c The siglist.c is build with -fno-toplevel-reorder to avoid compiler to reorder the compat assembly directives due a static linker issue [1] (fixed on 2.39). This patch removes the compiler flags by split the compat symbol generation in two phases. First the __sys_siglist and __sys_sigabbrev without any compat symbol directive is preprocessed to generate an assembly source code. This generate assembly is then used as input on a platform agnostic siglist.S which then creates the compat definitions. This prevents compiler to move any compat directive prior the _sys_errlist_internal definition itself. Checked on a make check run-built-tests=no on all affected ABIs. Diff: --- include/signal.h | 6 ++--- stdio-common/Makefile | 14 ++++++++++- stdio-common/{siglist.c => siglist-gen.c} | 4 ---- stdio-common/siglist.S | 7 ++++++ .../{siglist-compat.h => siglist-compat-def.h} | 27 ++++++++++++---------- sysdeps/generic/siglist-compat.c | 1 - .../hurd/{siglist-compat.c => siglist-compat.h} | 7 ++++-- .../linux/{siglist-compat.c => siglist-compat.h} | 7 ++++-- 8 files changed, 47 insertions(+), 26 deletions(-) diff --git a/include/signal.h b/include/signal.h index 2a278697c1..73f18dddd7 100644 --- a/include/signal.h +++ b/include/signal.h @@ -14,10 +14,8 @@ libc_hidden_proto (__sigpause) libc_hidden_proto (raise) libc_hidden_proto (__libc_current_sigrtmin) libc_hidden_proto (__libc_current_sigrtmax) -extern const char * const __sys_siglist[_NSIG]; -libc_hidden_proto (__sys_siglist) -extern const char * const __sys_sigabbrev[_NSIG]; -libc_hidden_proto (__sys_sigabbrev) +extern const char * const __sys_siglist[_NSIG] attribute_hidden; +extern const char * const __sys_sigabbrev[_NSIG] attribute_hidden; /* Now define the internal interfaces. */ extern __sighandler_t __bsd_signal (int __sig, __sighandler_t __handler); diff --git a/stdio-common/Makefile b/stdio-common/Makefile index 08bc998436..cb85e949c0 100644 --- a/stdio-common/Makefile +++ b/stdio-common/Makefile @@ -215,6 +215,8 @@ tests := \ generated += \ errlist-data-aux-shared.S \ errlist-data-aux.S \ + siglist-aux-shared.S \ + siglist-aux.S \ # generated test-srcs = tst-unbputc tst-printf tst-printfsz-islongdouble @@ -265,6 +267,17 @@ $(objpfx)errlist-data-aux.S: errlist-data-gen.c $(objpfx)errlist-data.os: $(objpfx)errlist-data-aux-shared.S $(objpfx)errlist-data.o: $(objpfx)errlist-data-aux.S +$(objpfx)siglist-aux-shared.S: siglist-gen.c + $(make-target-directory) + $(compile-command.c) $(pic-cppflags) $(pic-ccflag) $(no-stack-protector) -S + +$(objpfx)siglist-aux.S: siglist-gen.c + $(make-target-directory) + $(compile-command.c) $(pie-default) $(no-stack-protector) -S + +$(objpfx)siglist.os: $(objpfx)siglist-aux-shared.S +$(objpfx)siglist.o: $(objpfx)siglist-aux.S + ifeq ($(run-built-tests),yes) LOCALES := \ de_DE.ISO-8859-1 \ @@ -353,7 +366,6 @@ CFLAGS-isoc99_vfscanf.c += -fexceptions CFLAGS-isoc99_vscanf.c += -fexceptions CFLAGS-isoc99_fscanf.c += -fexceptions CFLAGS-isoc99_scanf.c += -fexceptions -CFLAGS-siglist.c += $(fno-unit-at-a-time) # scanf14a.c and scanf16a.c test a deprecated extension which is no # longer visible under most conformance levels; see the source files diff --git a/stdio-common/siglist.c b/stdio-common/siglist-gen.c similarity index 92% rename from stdio-common/siglist.c rename to stdio-common/siglist-gen.c index bb88d5300f..95441b707d 100644 --- a/stdio-common/siglist.c +++ b/stdio-common/siglist-gen.c @@ -26,7 +26,6 @@ const char *const __sys_siglist[NSIG] = #include #undef init_sig }; -libc_hidden_def (__sys_siglist) const char *const __sys_sigabbrev[NSIG] = { @@ -34,6 +33,3 @@ const char *const __sys_sigabbrev[NSIG] = #include #undef init_sig }; -libc_hidden_def (__sys_sigabbrev) - -#include diff --git a/stdio-common/siglist.S b/stdio-common/siglist.S new file mode 100644 index 0000000000..f84cdac976 --- /dev/null +++ b/stdio-common/siglist.S @@ -0,0 +1,7 @@ +#ifdef SHARED +# include "siglist-aux-shared.S" +#else +# include "siglist-aux.S" +#endif + +#include diff --git a/sysdeps/generic/siglist-compat.h b/sysdeps/generic/siglist-compat-def.h similarity index 69% rename from sysdeps/generic/siglist-compat.h rename to sysdeps/generic/siglist-compat-def.h index 05a0d63855..f5a1840dc3 100644 --- a/sysdeps/generic/siglist-compat.h +++ b/sysdeps/generic/siglist-compat-def.h @@ -28,20 +28,23 @@ sys_sigabbrev alias to __sys_sigabbrev. Both target alias are define in siglist.c. */ #define DEFINE_COMPAT_SIGLIST(NUMBERSIG, VERSION) \ - declare_symbol_alias (__ ## VERSION ## _sys_siglist, \ - __sys_siglist, \ - object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ - declare_symbol_alias (__ ## VERSION ## sys_siglist, \ - __sys_siglist, \ - object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ - declare_symbol_alias (__ ## VERSION ## _sys_sigabbrev, \ - __sys_sigabbrev, \ - object, NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)); \ + declare_object_symbol_alias (__ ## VERSION ## _sys_siglist, \ + __sys_siglist, \ + NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)) \ + ASM_LINE_SEP \ + declare_object_symbol_alias (__ ## VERSION ## sys_siglist, \ + __sys_siglist, \ + NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)) \ + ASM_LINE_SEP \ + declare_object_symbol_alias (__ ## VERSION ## _sys_sigabbrev, \ + __sys_sigabbrev, \ + NUMBERSIG * (ULONG_WIDTH / UCHAR_WIDTH)) \ + ASM_LINE_SEP \ compat_symbol (libc, __## VERSION ## _sys_siglist, _sys_siglist, \ - VERSION); \ + VERSION) ASM_LINE_SEP \ compat_symbol (libc, __## VERSION ## sys_siglist, sys_siglist, \ - VERSION); \ + VERSION) ASM_LINE_SEP \ compat_symbol (libc, __## VERSION ## _sys_sigabbrev, sys_sigabbrev, \ - VERSION); \ + VERSION) #endif diff --git a/sysdeps/generic/siglist-compat.c b/sysdeps/generic/siglist-compat.c deleted file mode 100644 index 6e25b021ab..0000000000 --- a/sysdeps/generic/siglist-compat.c +++ /dev/null @@ -1 +0,0 @@ -/* Empty. */ diff --git a/sysdeps/mach/hurd/siglist-compat.c b/sysdeps/mach/hurd/siglist-compat.h similarity index 86% rename from sysdeps/mach/hurd/siglist-compat.c rename to sysdeps/mach/hurd/siglist-compat.h index 5334b0885b..17bb0401aa 100644 --- a/sysdeps/mach/hurd/siglist-compat.c +++ b/sysdeps/mach/hurd/siglist-compat.h @@ -16,12 +16,15 @@ License along with the GNU C Library; if not, see . */ -#include +#include +/* To get _NSIG definition. */ +#define _SIGNAL_H +#include #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) DEFINE_COMPAT_SIGLIST (33, GLIBC_2_0) #endif #if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_32) -DEFINE_COMPAT_SIGLIST (NSIG, GLIBC_2_1) +DEFINE_COMPAT_SIGLIST (_NSIG, GLIBC_2_1) #endif diff --git a/sysdeps/unix/sysv/linux/siglist-compat.c b/sysdeps/unix/sysv/linux/siglist-compat.h similarity index 87% rename from sysdeps/unix/sysv/linux/siglist-compat.c rename to sysdeps/unix/sysv/linux/siglist-compat.h index cbc77289c0..2a9801276d 100644 --- a/sysdeps/unix/sysv/linux/siglist-compat.c +++ b/sysdeps/unix/sysv/linux/siglist-compat.h @@ -16,7 +16,10 @@ License along with the GNU C Library; if not, see . */ -#include +#include +/* To get _NSIG definition. */ +#define _SIGNAL_H +#include #if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) DEFINE_COMPAT_SIGLIST (32, GLIBC_2_0) @@ -27,5 +30,5 @@ DEFINE_COMPAT_SIGLIST (64, GLIBC_2_1) #endif #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_32) -DEFINE_COMPAT_SIGLIST (NSIG, GLIBC_2_3_3) +DEFINE_COMPAT_SIGLIST (_NSIG, GLIBC_2_3_3) #endif