This patch completes my series of patches to move startup files etc. to
toplevel libgcc:
http://gcc.gnu.org/ml/gcc-patches/2011-05/msg00098.html
http://gcc.gnu.org/ml/gcc-patches/2011-05/msg02337.html
There are a few parts that require approval:
* The gcc/mkmap-flat.awk change needs either build or global reviewer
approval.
* The libgcc/configure.ac change to determine target_thread_file and
libgcc/config/alpha/t-crtfm use of $< may need build maintainer approval.
The only noteworthy change is the change to only export symbols from
libgcc_s.so.1 that are considered part of its interface. While the
Tru64 UNIX linker doesn't support symbol versioning or even SGI ld's
-exported_symbols, it has -input which simply reads command line options
from a file. I've therefore modified mkmap-flat.awk to conditionlly
emit -exported_symbol <symbol> if invoked with -v osf_export=1. This
nicely hides several symbols.
A slightly earlier version has been bootstrapped without regressions on
alpha-dec-osf5.1b.
Ok for mainline after a fresh bootstrap?
Thanks.
Rainer
2011-04-30 Rainer Orth <r...@cebitec.uni-bielefeld.de>
gcc:
* config/alpha/t-osf5: Remove.
* config/alpha/t-osf-pthread: Remove.
* config.gcc (alpha*-dec-osf5.1*): Set tmake_file to t-slibgcc-dummy.
* mkmap-flat.awk: Handle osf_export for Tru64 UNIX linker -input file.
libgcc:
* configure.ac (target_thread_file): Determine thread model.
* configure: Regenerate.
* config.host (alpha*-dec-osf5.1*): Set tmake_file, extra_parts.
* config/alpha/t-alpha: New file.
* config/alpha/t-crtfm: Use $<.
* config/alpha/t-ieee: New file.
* config/alpha/t-osf5: New file.
* config/alpha/t-osf-pthread: New file.
* config/alpha/t-slibgcc-osf: New file.
* config/alpha/libgcc-osf5.ver: New file.
diff --git a/gcc/config.gcc b/gcc/config.gcc
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -755,7 +755,7 @@ alpha*-dec-osf5.1*)
extra_passes="mips-tfile mips-tdump"
fi
use_collect2=yes
- tmake_file="alpha/t-alpha alpha/t-ieee alpha/t-crtfm alpha/t-osf5"
+ tmake_file="t-slibgcc-dummy"
tm_file="${tm_file} alpha/osf5.h"
tm_defines="${tm_defines} TARGET_SUPPORT_ARCH=1"
extra_options="${extra_options} rpath.opt alpha/osf5.opt"
@@ -764,7 +764,6 @@ alpha*-dec-osf5.1*)
case ${enable_threads} in
"" | yes | posix)
thread_file='posix'
- tmake_file="${tmake_file} alpha/t-osf-pthread"
;;
esac
;;
diff --git a/gcc/mkmap-flat.awk b/gcc/mkmap-flat.awk
--- a/gcc/mkmap-flat.awk
+++ b/gcc/mkmap-flat.awk
@@ -1,5 +1,5 @@
# Generate a flat list of symbols to export.
-# Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 2007, 2008, 2009, 2011 Free Software Foundation, Inc.
# Contributed by Richard Henderson <r...@cygnus.com>
#
# This file is part of GCC.
@@ -20,6 +20,8 @@
# Options:
# "-v leading_underscore=1" : Symbols in map need leading underscore.
+# "-v osf_export=1" : Create -input file for Tru64 UNIX linker
+# instead of map file.
# "-v pe_dll=1" : Create .DEF file for Windows PECOFF
# DLL link instead of map file.
@@ -98,6 +100,10 @@ END {
}
for (sym in export)
- if (def[sym] || (pe_dll && def["_" sym]))
- print sym;
+ if (def[sym] || (pe_dll && def["_" sym])) {
+ if (!osf_export)
+ print sym;
+ else
+ print "-exported_symbol " sym;
+ }
}
diff --git a/libgcc/config.host b/libgcc/config.host
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -218,6 +218,13 @@ alpha*-*-netbsd*)
alpha*-*-openbsd*)
;;
alpha*-dec-osf5.1*)
+ tmake_file="${tmake_file} alpha/t-alpha alpha/t-ieee alpha/t-crtfm
t-slibgcc alpha/t-slibgcc-osf"
+ case ${target_thread_file} in
+ posix)
+ tmake_file="${tmake_file} alpha/t-osf-pthread"
+ ;;
+ esac
+ extra_parts="${extra_parts} qrnnd.o crtfastmath.o gthr-posix.o"
;;
alpha64-dec-*vms*)
tmake_file="vms/t-vms vms/t-vms64 alpha/t-vms"
diff --git a/libgcc/config/alpha/libgcc-osf5.ver
b/libgcc/config/alpha/libgcc-osf5.ver
new file mode 100644
--- /dev/null
+++ b/libgcc/config/alpha/libgcc-osf5.ver
@@ -0,0 +1,58 @@
+# Copyright (C) 2011 Free Software Foundation, Inc.
+#
+# This file is part of GCC.
+#
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3. If not see
+# <http://www.gnu.org/licenses/>.
+
+# Tru64 UNIX specific additions to libgcc-std.ver.
+
+GCC_4.7.0 {
+ __udiv_qrnnd
+ # Beware *not* to hide the POSIX threads related symbols provided by
+ # gthr-posix.c, as this would prevent their preemption by real symbols.
+ __pthread_cancel
+ __pthread_cond_broadcast
+ __pthread_cond_destroy
+ __pthread_cond_init
+ __pthread_cond_signal
+ __pthread_cond_timedwait
+ __pthread_cond_wait
+ __pthread_create
+ __pthread_detach
+ __pthread_exit
+ __pthread_getspecific
+ __pthread_join
+ __pthread_mutex_destroy
+ __pthread_mutex_init
+ __pthread_mutex_lock
+ __pthread_mutex_trylock
+ __pthread_mutex_unlock
+ __pthread_once
+ __pthread_self
+ __pthread_setspecific
+ pthread_attr_destroy
+ pthread_attr_init
+ pthread_attr_setdetachstate
+ pthread_getschedparam
+ pthread_key_create
+ pthread_key_delete
+ pthread_mutexattr_destroy
+ pthread_mutexattr_init
+ pthread_mutexattr_settype
+ pthread_setschedparam
+ sched_get_priority_max
+ sched_get_priority_min
+ sched_yield
+}
diff --git a/gcc/config/alpha/t-alpha b/libgcc/config/alpha/t-alpha
copy from gcc/config/alpha/t-alpha
copy to libgcc/config/alpha/t-alpha
--- a/gcc/config/alpha/t-alpha
+++ b/libgcc/config/alpha/t-alpha
@@ -1,2 +1,2 @@
# This is a support routine for longlong.h, used by libgcc2.c.
-LIB2FUNCS_EXTRA = $(srcdir)/config/alpha/qrnnd.asm
+LIB2ADD += $(gcc_srcdir)/config/alpha/qrnnd.asm
diff --git a/libgcc/config/alpha/t-crtfm b/libgcc/config/alpha/t-crtfm
--- a/libgcc/config/alpha/t-crtfm
+++ b/libgcc/config/alpha/t-crtfm
@@ -2,5 +2,4 @@
# while migrating this rule from the GCC directory, but I do not
# know why it is necessary if no other crt file uses it.
crtfastmath.o: $(gcc_srcdir)/config/alpha/crtfastmath.c
- $(gcc_compile) -frandom-seed=gcc-crtfastmath -c \
- $(gcc_srcdir)/config/alpha/crtfastmath.c
+ $(gcc_compile) -frandom-seed=gcc-crtfastmath -c $<
diff --git a/gcc/config/alpha/t-ieee b/libgcc/config/alpha/t-ieee
copy from gcc/config/alpha/t-ieee
copy to libgcc/config/alpha/t-ieee
--- a/gcc/config/alpha/t-ieee
+++ b/libgcc/config/alpha/t-ieee
@@ -1,2 +1,2 @@
# All alphas get an IEEE complaint set of libraries.
-TARGET_LIBGCC2_CFLAGS += -mieee
+HOST_LIBGCC2_CFLAGS += -mieee
diff --git a/gcc/config/alpha/t-osf-pthread b/libgcc/config/alpha/t-osf-pthread
rename from gcc/config/alpha/t-osf-pthread
rename to libgcc/config/alpha/t-osf-pthread
--- a/gcc/config/alpha/t-osf-pthread
+++ b/libgcc/config/alpha/t-osf-pthread
@@ -1,5 +1,5 @@
+# Compile libgcc2 with POSIX threads supports
+HOST_LIBGCC2_CFLAGS += -pthread
+
# Provide dummy POSIX threads functions
-LIB2FUNCS_EXTRA += $(srcdir)/gthr-posix.c
-
-# Compile libgcc2 with POSIX threads supports
-TARGET_LIBGCC2_CFLAGS=-pthread
+LIB2ADD += $(gcc_srcdir)/gthr-posix.c
diff --git a/gcc/config/alpha/t-osf5 b/libgcc/config/alpha/t-slibgcc-osf
rename from gcc/config/alpha/t-osf5
rename to libgcc/config/alpha/t-slibgcc-osf
--- a/gcc/config/alpha/t-osf5
+++ b/libgcc/config/alpha/t-slibgcc-osf
@@ -1,4 +1,5 @@
-# Copyright (C) 2000, 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
+# Copyright (C) 2000, 2001, 2003, 2004, 2005, 2011
+# Free Software Foundation, Inc.
#
# This file is part of GCC.
#
@@ -16,33 +17,13 @@
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
-# Compile crtbeginS.o and crtendS.o with pic.
-CRTSTUFF_T_CFLAGS_S = -fPIC
+# Build a shared libgcc library with the Tru64 UNIX linker.
-# Compile libgcc2.a with pic.
-TARGET_LIBGCC2_CFLAGS = -fPIC
+SHLIB_LDFLAGS = -Wl,-msym -Wl,-set_version,gcc.1 -Wl,-soname,$(SHLIB_SONAME) \
+ -Wl,-hidden -Wl,-input,$(SHLIB_MAP)
-# Build a shared libgcc library.
-SHLIB_EXT = .so
-SHLIB_NAME = @shlib_base_name@.so
-SHLIB_SONAME = @shlib_base_name@.so.1
-SHLIB_OBJS = @shlib_objs@
-
-# Beware *not* to hide the POSIX threads related symbols provided by
-# gthr-posix.c, as this would prevent their preemption by real symbols.
-SHLIB_LINK = $(GCC_FOR_TARGET) $(LIBGCC2_CFLAGS) -shared -nodefaultlibs \
- -Wl,-msym -Wl,-set_version,gcc.1 -Wl,-soname,$(SHLIB_SONAME) \
- -o $(SHLIB_NAME).tmp @multilib_flags@ $(SHLIB_OBJS) -lc && \
- rm -f $(SHLIB_SONAME) && \
- if [ -f $(SHLIB_NAME) ]; then \
- mv -f $(SHLIB_NAME) $(SHLIB_NAME).backup; \
- else true; fi && \
- mv $(SHLIB_NAME).tmp $(SHLIB_NAME) && \
- $(LN_S) $(SHLIB_NAME) $(SHLIB_SONAME)
-# $(slibdir) double quoted to protect it from expansion while building
-# libgcc.mk. We want this delayed until actual install time.
-SHLIB_INSTALL = \
- $$(mkinstalldirs) $$(DESTDIR)$$(slibdir); \
- $(INSTALL_DATA) $(SHLIB_NAME) $$(DESTDIR)$$(slibdir)/$(SHLIB_SONAME); \
- rm -f $$(DESTDIR)$$(slibdir)/$(SHLIB_NAME); \
- $(LN_S) $(SHLIB_SONAME) $$(DESTDIR)$$(slibdir)/$(SHLIB_NAME)
+SHLIB_MKMAP = $(gcc_srcdir)/mkmap-flat.awk
+SHLIB_MKMAP_OPTS = -v osf_export=1
+# Needed so mkmap-flat.awk can parse the nm output.
+SHLIB_NM_FLAGS = -Bg
+SHLIB_MAPFILES = $(gcc_srcdir)/libgcc-std.ver
$(srcdir)/config/alpha/libgcc-osf5.ver
diff --git a/libgcc/configure.ac b/libgcc/configure.ac
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -169,6 +169,10 @@ AC_SUBST(fixed_point)
AC_LIB_PROG_LD_GNU
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
+AC_MSG_RESULT([$target_thread_file])
+
# Check for assembler CFI support.
AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
[AC_COMPILE_IFELSE(
--
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University
