Christian Wiese
13 years ago
2 changed files with 775 additions and 0 deletions
@ -0,0 +1,359 @@
|
||||
From 95f5a9a866695da4e038aa4e6ccbbfd5d9cf63b7 Mon Sep 17 00:00:00 2001
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From: Joseph Myers <joseph@codesourcery.com>
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Date: Tue, 3 Jul 2012 19:14:59 +0000
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Subject: [PATCH] Avoid use of libgcc_s and libgcc_eh when building glibc.
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---
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ChangeLog | 47 ++++++++++++++++++++++++++++++
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Makeconfig | 68 ++++++++++++++++++++++++++++++++++++++------
|
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Rules | 45 ++++++++++++++++++++++-------
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elf/Makefile | 6 +++-
|
||||
elf/static-stubs.c | 46 +++++++++++++++++++++++++++++
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ports/ChangeLog.arm | 7 ++++
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ports/sysdeps/arm/Makefile | 8 +++++
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7 files changed, 206 insertions(+), 21 deletions(-)
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create mode 100644 elf/static-stubs.c
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||||
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diff --git a/Makeconfig b/Makeconfig
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index 417fa50..859b588 100644
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--- a/Makeconfig
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+++ b/Makeconfig
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||||
@@ -415,9 +415,9 @@ LDFLAGS.so += $(hashstyle-LDFLAGS)
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LDFLAGS-rtld += $(hashstyle-LDFLAGS)
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endif
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||||
|
||||
-# Command for linking programs with the C library.
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||||
+# Commands for linking programs with the C library.
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||||
ifndef +link
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||||
-+link = $(CC) -nostdlib -nostartfiles -o $@ \
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++link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \
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||||
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||||
$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
|
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$(addprefix $(csu-objpfx),$(start-installed-name)) \
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@@ -426,7 +426,10 @@ ifndef +link
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$(start-installed-name))\
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||||
$(+preinit) $(link-extra-libs) \
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$(common-objpfx)libc% $(+postinit),$^) \
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- $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
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+ $(link-extra-libs)
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||||
++link-after-libc = $(+postctor) $(+postinit)
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||||
++link = $(+link-before-libc) $(link-libc) $(+link-after-libc)
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++link-tests = $(+link-before-libc) $(link-libc-tests) $(+link-after-libc)
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endif
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||||
# Command for linking PIE programs with the C library.
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ifndef +link-pie
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@@ -443,7 +446,7 @@ ifndef +link-pie
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endif
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||||
# Command for statically linking programs with the C library.
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ifndef +link-static
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||||
-+link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
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++link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \
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$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||||
$(addprefix $(csu-objpfx),$(static-start-installed-name)) \
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$(+preinit) $(+prector) \
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@@ -451,7 +454,12 @@ ifndef +link-static
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$(start-installed-name))\
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$(+preinit) $(link-extra-libs-static) \
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$(common-objpfx)libc% $(+postinit),$^) \
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- $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
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+ $(link-extra-libs-static) $(link-libc-static)
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++link-static-after-libc = $(+postctor) $(+postinit)
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++link-static = $(+link-static-before-libc) $(link-libc-static) \
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+ $(+link-static-after-libc)
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++link-static-tests = $(+link-static-before-libc) $(link-libc-static-tests) \
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+ $(+link-static-after-libc)
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endif
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||||
# Command for statically linking bounded-pointer programs with the C library.
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ifndef +link-bounded
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||||
@@ -475,10 +483,12 @@ ifeq (yes,$(build-shared))
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||||
# We need the versioned name of libc.so in the deps of $(others) et al
|
||||
# so that the symlink to libc.so is created before anything tries to
|
||||
# run the linked programs.
|
||||
-link-libc = -Wl,-rpath-link=$(rpath-link) \
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||||
+link-libc-before-gnulib = -Wl,-rpath-link=$(rpath-link) \
|
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$(common-objpfx)libc.so$(libc.so-version) \
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$(common-objpfx)$(patsubst %,$(libtype.oS),c) \
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||||
- $(as-needed) $(common-objpfx)elf/ld.so $(no-as-needed) $(gnulib)
|
||||
+ $(as-needed) $(common-objpfx)elf/ld.so $(no-as-needed)
|
||||
+link-libc = $(link-libc-before-gnulib) $(gnulib)
|
||||
+link-libc-tests = $(link-libc-before-gnulib) $(gnulib-tests)
|
||||
# This is how to find at build-time things that will be installed there.
|
||||
rpath-dirs = math elf dlfcn nss nis rt resolv crypt
|
||||
rpath-link = \
|
||||
@@ -488,6 +498,7 @@ else
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||||
nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
|
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resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
|
||||
link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
|
||||
+link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
|
||||
endif
|
||||
endif
|
||||
|
||||
@@ -513,8 +524,43 @@ endif
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||||
|
||||
# The static libraries.
|
||||
link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
|
||||
+link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
|
||||
link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
|
||||
|
||||
+# How to link against libgcc. Some libgcc functions, such as those
|
||||
+# for "long long" arithmetic or software floating point, can always be
|
||||
+# built without use of C library headers and do not have any global
|
||||
+# state so can safely be linked statically into any executable or
|
||||
+# shared library requiring them; these functions are in libgcc.a.
|
||||
+# Other functions, relating to exception handling, may require C
|
||||
+# library headers to build and it may not be safe to have more than
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||||
+# one copy of them in a process; these functions are only in
|
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+# libgcc_s.so and libgcc_eh.a.
|
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+#
|
||||
+# To avoid circular dependencies when bootstrapping, it is desirable
|
||||
+# to avoid use of libgcc_s and libgcc_eh in building glibc. Where any
|
||||
+# glibc functionality (in particular, thread cancellation) requires
|
||||
+# exception handling, this is implemented through dlopen of libgcc_s
|
||||
+# to avoid unnecessary dependencies on libgcc_s by programs not using
|
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+# that functionality; executables built with glibc do not use
|
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+# exception handling other than through thread cancellation.
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+#
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+# Undefined references to functions from libgcc_eh or libgcc_s may
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+# arise for code built with -fexceptions. In the case of statically
|
||||
+# linked programs installed by glibc, unwinding will never actually
|
||||
+# occur at runtime and the use of elf/static-stubs.c to resolve these
|
||||
+# references is safe. In the case of statically linked test programs
|
||||
+# and test programs built with -fexceptions, unwinding may occur in
|
||||
+# some cases and it is preferable to link with libgcc_eh or libgcc_s
|
||||
+# so that the testing is as similar as possible to how programs will
|
||||
+# be built with the installed glibc.
|
||||
+#
|
||||
+# Some architectures have architecture-specific systems for exception
|
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+# handling that may involve undefined references to
|
||||
+# architecture-specific functions. On those architectures,
|
||||
+# gnulib-arch and static-gnulib-arch may be defined in sysdeps
|
||||
+# makefiles to use additional libraries for linking executables and
|
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+# shared libraries built by glibc.
|
||||
ifndef gnulib
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||||
ifneq ($(have-cc-with-libunwind),yes)
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||||
libunwind =
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||||
@@ -522,8 +568,12 @@ else
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||||
libunwind = -lunwind
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||||
endif
|
||||
libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
|
||||
-gnulib := -lgcc $(libgcc_eh)
|
||||
-static-gnulib := -lgcc -lgcc_eh $(libunwind)
|
||||
+gnulib-arch =
|
||||
+gnulib = -lgcc $(gnulib-arch)
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||||
+gnulib-tests := -lgcc $(libgcc_eh)
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||||
+static-gnulib-arch =
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||||
+static-gnulib = -lgcc $(static-gnulib-arch)
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||||
+static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
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||||
libc.so-gnulib := -lgcc
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||||
endif
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||||
+preinit = $(addprefix $(csu-objpfx),crti.o)
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||||
diff --git a/Rules b/Rules
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index 3c61a29..17d938e 100644
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--- a/Rules
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||||
+++ b/Rules
|
||||
@@ -1,5 +1,4 @@
|
||||
-# Copyright (C) 1991-2000,2002,2003,2004,2005,2006,2011
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||||
-# Free Software Foundation, Inc.
|
||||
+# Copyright (C) 1991-2012 Free Software Foundation, Inc.
|
||||
# This file is part of the GNU C Library.
|
||||
|
||||
# The GNU C Library is free software; you can redistribute it and/or
|
||||
@@ -103,29 +102,46 @@ xtests: tests $(xtests:%=$(objpfx)%.out) $(xtests-bp.out)
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endif
|
||||
|
||||
ifeq ($(build-programs),yes)
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||||
-binaries-all = $(others) $(sysdep-others) $(tests) $(xtests) $(test-srcs)
|
||||
-binaries-static = $(others-static) $(tests-static) $(xtests-static)
|
||||
+binaries-all-notests = $(others) $(sysdep-others)
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||||
+binaries-all-tests = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all = $(binaries-all-notests) $(binaries-all-tests)
|
||||
+binaries-static-notests = $(others-static)
|
||||
+binaries-static-tests = $(tests-static) $(xtests-static)
|
||||
+binaries-static = $(binaries-static-notests) $(binaries-static-tests)
|
||||
ifeq (yesyes,$(have-fpie)$(build-shared))
|
||||
binaries-pie = $(others-pie) $(tests-pie) $(xtests-pie)
|
||||
else
|
||||
binaries-pie =
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||||
endif
|
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else
|
||||
-binaries-all = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all-notests =
|
||||
+binaries-all-tests = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all = $(binaries-all-tests)
|
||||
+binaries-static-notests =
|
||||
+binaries-static-tests =
|
||||
binaries-static =
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binaries-pie =
|
||||
endif
|
||||
|
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-binaries-shared = $(filter-out $(binaries-pie) $(binaries-static), \
|
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- $(binaries-all))
|
||||
+binaries-shared-tests = $(filter-out $(binaries-pie) $(binaries-static), \
|
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+ $(binaries-all-tests))
|
||||
+binaries-shared-notests = $(filter-out $(binaries-pie) $(binaries-static), \
|
||||
+ $(binaries-all-notests))
|
||||
|
||||
-ifneq "$(strip $(binaries-shared))" ""
|
||||
-$(addprefix $(objpfx),$(binaries-shared)): %: %.o \
|
||||
+ifneq "$(strip $(binaries-shared-notests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-shared-notests)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
$(+link)
|
||||
endif
|
||||
|
||||
+ifneq "$(strip $(binaries-shared-tests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-shared-tests)): %: %.o \
|
||||
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
+ $(+link-tests)
|
||||
+endif
|
||||
+
|
||||
ifneq "$(strip $(binaries-pie))" ""
|
||||
$(addprefix $(objpfx),$(binaries-pie)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
@@ -133,13 +149,20 @@ $(addprefix $(objpfx),$(binaries-pie)): %: %.o \
|
||||
$(+link-pie)
|
||||
endif
|
||||
|
||||
-ifneq "$(strip $(binaries-static))" ""
|
||||
-$(addprefix $(objpfx),$(binaries-static)): %: %.o \
|
||||
+ifneq "$(strip $(binaries-static-notests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-static-notests)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc-static))) \
|
||||
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
$(+link-static)
|
||||
endif
|
||||
|
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+ifneq "$(strip $(binaries-static-tests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-static-tests)): %: %.o \
|
||||
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc-static-tests))) \
|
||||
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
+ $(+link-static-tests)
|
||||
+endif
|
||||
+
|
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ifeq ($(build-bounded),yes)
|
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binaries-bounded = $(addsuffix -bp,$(tests) $(xtests) $(test-srcs))
|
||||
$(addprefix $(objpfx),$(binaries-bounded)): %-bp: %.ob \
|
||||
diff --git a/elf/Makefile b/elf/Makefile
|
||||
index 0c26ce5..9054199 100644
|
||||
--- a/elf/Makefile
|
||||
+++ b/elf/Makefile
|
||||
@@ -71,6 +71,8 @@ others = sprof sln pldd
|
||||
install-bin = sprof pldd
|
||||
others-static = sln
|
||||
install-rootsbin = sln
|
||||
+sln-modules := static-stubs
|
||||
+extra-objs += $(sln-modules:=.o)
|
||||
|
||||
ifeq (yes,$(use-ldconfig))
|
||||
ifeq (yes,$(build-shared))
|
||||
@@ -78,7 +80,7 @@ others-static += ldconfig
|
||||
others += ldconfig
|
||||
install-rootsbin += ldconfig
|
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|
||||
-ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon
|
||||
+ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon static-stubs
|
||||
extra-objs += $(ldconfig-modules:=.o)
|
||||
endif
|
||||
endif
|
||||
@@ -411,6 +413,8 @@ $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
|
||||
|
||||
$(objpfx)sprof: $(libdl)
|
||||
|
||||
+$(objpfx)sln: $(sln-modules:%=$(objpfx)%.o)
|
||||
+
|
||||
$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
|
||||
|
||||
$(objpfx)pldd: $(pldd-modules:%=$(objpfx)%.o)
|
||||
diff --git a/elf/static-stubs.c b/elf/static-stubs.c
|
||||
new file mode 100644
|
||||
index 0000000..6c5eebc
|
||||
--- /dev/null
|
||||
+++ b/elf/static-stubs.c
|
||||
@@ -0,0 +1,46 @@
|
||||
+/* Stub implementations of functions to link into statically linked
|
||||
+ programs without needing libgcc_eh.
|
||||
+ Copyright (C) 2012 Free Software Foundation, Inc.
|
||||
+ This file is part of the GNU C Library.
|
||||
+
|
||||
+ The GNU C Library is free software; you can redistribute it and/or
|
||||
+ modify it under the terms of the GNU Lesser General Public
|
||||
+ License as published by the Free Software Foundation; either
|
||||
+ version 2.1 of the License, or (at your option) any later version.
|
||||
+
|
||||
+ The GNU C Library 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
|
||||
+ Lesser General Public License for more details.
|
||||
+
|
||||
+ You should have received a copy of the GNU Lesser General Public
|
||||
+ License along with the GNU C Library; if not, see
|
||||
+ <http://www.gnu.org/licenses/>. */
|
||||
+
|
||||
+/* Avoid backtrace (and so _Unwind_Backtrace) dependencies from
|
||||
+ sysdeps/unix/sysv/linux/libc_fatal.c. */
|
||||
+#include <sysdeps/posix/libc_fatal.c>
|
||||
+
|
||||
+#include <stdlib.h>
|
||||
+#include <unwind.h>
|
||||
+
|
||||
+/* These programs do not use thread cancellation, so _Unwind_Resume
|
||||
+ and the personality routine are never actually called. */
|
||||
+
|
||||
+void
|
||||
+_Unwind_Resume (struct _Unwind_Exception *exc __attribute__ ((unused)))
|
||||
+{
|
||||
+ abort ();
|
||||
+}
|
||||
+
|
||||
+_Unwind_Reason_Code
|
||||
+__gcc_personality_v0 (int version __attribute__ ((unused)),
|
||||
+ _Unwind_Action actions __attribute__ ((unused)),
|
||||
+ _Unwind_Exception_Class exception_class
|
||||
+ __attribute__ ((unused)),
|
||||
+ struct _Unwind_Exception *ue_header
|
||||
+ __attribute__ ((unused)),
|
||||
+ struct _Unwind_Context *context __attribute__ ((unused)))
|
||||
+{
|
||||
+ abort ();
|
||||
+}
|
||||
diff --git a/ports/ChangeLog.arm b/ports/ChangeLog.arm
|
||||
index c411e1c..71e8b1b 100644
|
||||
--- a/ports/ChangeLog.arm
|
||||
+++ b/ports/ChangeLog.arm
|
||||
@@ -1,3 +1,10 @@
|
||||
+2012-07-03 Joseph Myers <joseph@codesourcery.com>
|
||||
+
|
||||
+ * sysdeps/arm/Makefile (gnulib-arch): New variable.
|
||||
+ (static-gnulib-arch): Likewise.
|
||||
+ [subdir = elf] ($(objpfx)libgcc-stubs.a): New rule.
|
||||
+ [subdir = elf] (lib-noranlib): Depend on $(objpfx)libgcc-stubs.a.
|
||||
+
|
||||
2012-06-12 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/arm/setcontext.S (__startcontext): Use
|
||||
diff --git a/ports/sysdeps/arm/Makefile b/ports/sysdeps/arm/Makefile
|
||||
index 5fd5136..3bdb6b3 100644
|
||||
--- a/ports/sysdeps/arm/Makefile
|
||||
+++ b/ports/sysdeps/arm/Makefile
|
||||
@@ -1,8 +1,16 @@
|
||||
+gnulib-arch = $(elfobjdir)/libgcc-stubs.a
|
||||
+static-gnulib-arch = $(elfobjdir)/libgcc-stubs.a
|
||||
+
|
||||
ifeq ($(subdir),elf)
|
||||
sysdep-dl-routines += tlsdesc dl-tlsdesc
|
||||
sysdep_routines += aeabi_unwind_cpp_pr1 find_exidx tlsdesc dl-tlsdesc
|
||||
sysdep-rtld-routines += aeabi_unwind_cpp_pr1 tlsdesc dl-tlsdesc
|
||||
shared-only-routines += aeabi_unwind_cpp_pr1
|
||||
+
|
||||
+$(objpfx)libgcc-stubs.a: $(objpfx)aeabi_unwind_cpp_pr1.os
|
||||
+ $(build-extra-lib)
|
||||
+
|
||||
+lib-noranlib: $(objpfx)libgcc-stubs.a
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),csu)
|
||||
--
|
||||
1.7.3.4
|
||||
|
||||
@ -0,0 +1,416 @@
|
||||
From 95f5a9a866695da4e038aa4e6ccbbfd5d9cf63b7 Mon Sep 17 00:00:00 2001
|
||||
From: Joseph Myers <joseph@codesourcery.com>
|
||||
Date: Tue, 3 Jul 2012 19:14:59 +0000
|
||||
Subject: [PATCH] Avoid use of libgcc_s and libgcc_eh when building glibc.
|
||||
|
||||
---
|
||||
ChangeLog | 47 ++++++++++++++++++++++++++++++
|
||||
Makeconfig | 68 ++++++++++++++++++++++++++++++++++++++------
|
||||
Rules | 45 ++++++++++++++++++++++-------
|
||||
elf/Makefile | 6 +++-
|
||||
elf/static-stubs.c | 46 +++++++++++++++++++++++++++++
|
||||
ports/ChangeLog.arm | 7 ++++
|
||||
ports/sysdeps/arm/Makefile | 8 +++++
|
||||
7 files changed, 206 insertions(+), 21 deletions(-)
|
||||
create mode 100644 elf/static-stubs.c
|
||||
|
||||
diff --git a/ChangeLog b/ChangeLog
|
||||
index 7e270e0..dc750a5 100644
|
||||
--- a/ChangeLog
|
||||
+++ b/ChangeLog
|
||||
@@ -1,5 +1,52 @@
|
||||
2012-07-03 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
+ * Makeconfig [!+link] (+link-before-libc): New variable.
|
||||
+ [!+link] (+link-after-libc): Likewise.
|
||||
+ [!+link] (+link-tests): Likewise.
|
||||
+ [!+link] (+link): Define in terms of $(+link-before-libc) and
|
||||
+ $(+link-after-libc).
|
||||
+ [!+link-static] (+link-static-before-libc): New variable.
|
||||
+ [!+link-static] (+link-static-after-libc): Likewise.
|
||||
+ [!+link-static] (+link-static-tests): Likewise.
|
||||
+ [!+link-static] (+link-static): Define in terms of
|
||||
+ $(+link-static-before-libc) and $(+link-static-after-libc).
|
||||
+ [build-shared] (link-libc-before-gnulib): New variable.
|
||||
+ [build-shared] (link-libc-tests): Likewise.
|
||||
+ [build-shared] (link-libc): Define in terms of
|
||||
+ $(link-libc-before-gnulib).
|
||||
+ [!build-shared] (link-libc-tests): New variable.
|
||||
+ (link-libc-static-tests): New variable.
|
||||
+ [!gnulib] (gnulib-arch): New variable.
|
||||
+ [!gnulib] (gnulib-tests): Likewise.
|
||||
+ [!gnulib] (static-gnulib-arch): Likewise.
|
||||
+ [!gnulib] (static-gnulib-tests): Likewise.
|
||||
+ [!gnulib] (gnulib): Use $(gnulib-arch). Do not use $(libgcc_eh).
|
||||
+ Define with "=" instead of ":=".
|
||||
+ [!gnulib] (static-gnulib): Use $(static-gnulib-arch). Do not use
|
||||
+ -lgcc_eh $(libunwind). Define with "=" instead of ":=".
|
||||
+ * Rules (binaries-all-notests): New variable.
|
||||
+ (binaries-all-tests): Likewise.
|
||||
+ (binaries-static-notests): Likewise.
|
||||
+ (binaries-static-tests): Likewise.
|
||||
+ (binaries-all): Define using $(binaries-all-notests) and
|
||||
+ $(binaries-all-tests).
|
||||
+ (binaries-static): Define using $(binaries-static-notests) and
|
||||
+ $(binaries-static-tests).
|
||||
+ (binaries-shared-tests): New variable.
|
||||
+ (binaries-shared-notests): Likewise.
|
||||
+ (binaries-shared): Remove variable.
|
||||
+ ($(addprefix $(objpfx),$(binaries-shared-notests))): New rule.
|
||||
+ ($(addprefix $(objpfx),$(binaries-shared-tests))): Likewise.
|
||||
+ ($(addprefix $(objpfx),$(binaries-shared))): Remove rule.
|
||||
+ ($(addprefix $(objpfx),$(binaries-static-notests))): New rule.
|
||||
+ ($(addprefix $(objpfx),$(binaries-static-tests))): Likewise.
|
||||
+ ($(addprefix $(objpfx),$(binaries-static))): Remove rule.
|
||||
+ * elf/Makefile (sln-modules): New variable.
|
||||
+ (extra-objs): Add $(sln-modules:=.o).
|
||||
+ (ldconfig-modules): Add static-stubs.
|
||||
+ ($(objpfx)sln): Depend on $(sln-modules:%=$(objpfx)%.o).
|
||||
+ * elf/static-stubs.c: New file.
|
||||
+
|
||||
[BZ #14283]
|
||||
* sysdeps/ieee754/flt-32/k_rem_pio2f.c (__kernel_rem_pio2f): Shift
|
||||
by 7 not 8 to examine high bit of fractional part. Use volatile
|
||||
diff --git a/Makeconfig b/Makeconfig
|
||||
index 417fa50..859b588 100644
|
||||
--- a/Makeconfig
|
||||
+++ b/Makeconfig
|
||||
@@ -415,9 +415,9 @@ LDFLAGS.so += $(hashstyle-LDFLAGS)
|
||||
LDFLAGS-rtld += $(hashstyle-LDFLAGS)
|
||||
endif
|
||||
|
||||
-# Command for linking programs with the C library.
|
||||
+# Commands for linking programs with the C library.
|
||||
ifndef +link
|
||||
-+link = $(CC) -nostdlib -nostartfiles -o $@ \
|
||||
++link-before-libc = $(CC) -nostdlib -nostartfiles -o $@ \
|
||||
$(sysdep-LDFLAGS) $(config-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||||
$(combreloc-LDFLAGS) $(relro-LDFLAGS) $(hashstyle-LDFLAGS) \
|
||||
$(addprefix $(csu-objpfx),$(start-installed-name)) \
|
||||
@@ -426,7 +426,10 @@ ifndef +link
|
||||
$(start-installed-name))\
|
||||
$(+preinit) $(link-extra-libs) \
|
||||
$(common-objpfx)libc% $(+postinit),$^) \
|
||||
- $(link-extra-libs) $(link-libc) $(+postctor) $(+postinit)
|
||||
+ $(link-extra-libs)
|
||||
++link-after-libc = $(+postctor) $(+postinit)
|
||||
++link = $(+link-before-libc) $(link-libc) $(+link-after-libc)
|
||||
++link-tests = $(+link-before-libc) $(link-libc-tests) $(+link-after-libc)
|
||||
endif
|
||||
# Command for linking PIE programs with the C library.
|
||||
ifndef +link-pie
|
||||
@@ -443,7 +446,7 @@ ifndef +link-pie
|
||||
endif
|
||||
# Command for statically linking programs with the C library.
|
||||
ifndef +link-static
|
||||
-+link-static = $(CC) -nostdlib -nostartfiles -static -o $@ \
|
||||
++link-static-before-libc = $(CC) -nostdlib -nostartfiles -static -o $@ \
|
||||
$(sysdep-LDFLAGS) $(LDFLAGS) $(LDFLAGS-$(@F)) \
|
||||
$(addprefix $(csu-objpfx),$(static-start-installed-name)) \
|
||||
$(+preinit) $(+prector) \
|
||||
@@ -451,7 +454,12 @@ ifndef +link-static
|
||||
$(start-installed-name))\
|
||||
$(+preinit) $(link-extra-libs-static) \
|
||||
$(common-objpfx)libc% $(+postinit),$^) \
|
||||
- $(link-extra-libs-static) $(link-libc-static) $(+postctor) $(+postinit)
|
||||
+ $(link-extra-libs-static) $(link-libc-static)
|
||||
++link-static-after-libc = $(+postctor) $(+postinit)
|
||||
++link-static = $(+link-static-before-libc) $(link-libc-static) \
|
||||
+ $(+link-static-after-libc)
|
||||
++link-static-tests = $(+link-static-before-libc) $(link-libc-static-tests) \
|
||||
+ $(+link-static-after-libc)
|
||||
endif
|
||||
# Command for statically linking bounded-pointer programs with the C library.
|
||||
ifndef +link-bounded
|
||||
@@ -475,10 +483,12 @@ ifeq (yes,$(build-shared))
|
||||
# We need the versioned name of libc.so in the deps of $(others) et al
|
||||
# so that the symlink to libc.so is created before anything tries to
|
||||
# run the linked programs.
|
||||
-link-libc = -Wl,-rpath-link=$(rpath-link) \
|
||||
+link-libc-before-gnulib = -Wl,-rpath-link=$(rpath-link) \
|
||||
$(common-objpfx)libc.so$(libc.so-version) \
|
||||
$(common-objpfx)$(patsubst %,$(libtype.oS),c) \
|
||||
- $(as-needed) $(common-objpfx)elf/ld.so $(no-as-needed) $(gnulib)
|
||||
+ $(as-needed) $(common-objpfx)elf/ld.so $(no-as-needed)
|
||||
+link-libc = $(link-libc-before-gnulib) $(gnulib)
|
||||
+link-libc-tests = $(link-libc-before-gnulib) $(gnulib-tests)
|
||||
# This is how to find at build-time things that will be installed there.
|
||||
rpath-dirs = math elf dlfcn nss nis rt resolv crypt
|
||||
rpath-link = \
|
||||
@@ -488,6 +498,7 @@ else
|
||||
nssobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)nss)
|
||||
resolvobjdir := $(patsubst ../$(subdir),.,$(common-objpfx)resolv)
|
||||
link-libc = $(common-objpfx)libc.a $(otherlibs) $(gnulib) $(common-objpfx)libc.a $(gnulib)
|
||||
+link-libc-tests = $(common-objpfx)libc.a $(otherlibs) $(gnulib-tests) $(common-objpfx)libc.a $(gnulib-tests)
|
||||
endif
|
||||
endif
|
||||
|
||||
@@ -513,8 +524,43 @@ endif
|
||||
|
||||
# The static libraries.
|
||||
link-libc-static = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib) -Wl,--end-group
|
||||
+link-libc-static-tests = -Wl,--start-group $(common-objpfx)libc.a $(static-gnulib-tests) -Wl,--end-group
|
||||
link-libc-bounded = $(common-objpfx)libc_b.a $(gnulib) $(common-objpfx)libc_b.a
|
||||
|
||||
+# How to link against libgcc. Some libgcc functions, such as those
|
||||
+# for "long long" arithmetic or software floating point, can always be
|
||||
+# built without use of C library headers and do not have any global
|
||||
+# state so can safely be linked statically into any executable or
|
||||
+# shared library requiring them; these functions are in libgcc.a.
|
||||
+# Other functions, relating to exception handling, may require C
|
||||
+# library headers to build and it may not be safe to have more than
|
||||
+# one copy of them in a process; these functions are only in
|
||||
+# libgcc_s.so and libgcc_eh.a.
|
||||
+#
|
||||
+# To avoid circular dependencies when bootstrapping, it is desirable
|
||||
+# to avoid use of libgcc_s and libgcc_eh in building glibc. Where any
|
||||
+# glibc functionality (in particular, thread cancellation) requires
|
||||
+# exception handling, this is implemented through dlopen of libgcc_s
|
||||
+# to avoid unnecessary dependencies on libgcc_s by programs not using
|
||||
+# that functionality; executables built with glibc do not use
|
||||
+# exception handling other than through thread cancellation.
|
||||
+#
|
||||
+# Undefined references to functions from libgcc_eh or libgcc_s may
|
||||
+# arise for code built with -fexceptions. In the case of statically
|
||||
+# linked programs installed by glibc, unwinding will never actually
|
||||
+# occur at runtime and the use of elf/static-stubs.c to resolve these
|
||||
+# references is safe. In the case of statically linked test programs
|
||||
+# and test programs built with -fexceptions, unwinding may occur in
|
||||
+# some cases and it is preferable to link with libgcc_eh or libgcc_s
|
||||
+# so that the testing is as similar as possible to how programs will
|
||||
+# be built with the installed glibc.
|
||||
+#
|
||||
+# Some architectures have architecture-specific systems for exception
|
||||
+# handling that may involve undefined references to
|
||||
+# architecture-specific functions. On those architectures,
|
||||
+# gnulib-arch and static-gnulib-arch may be defined in sysdeps
|
||||
+# makefiles to use additional libraries for linking executables and
|
||||
+# shared libraries built by glibc.
|
||||
ifndef gnulib
|
||||
ifneq ($(have-cc-with-libunwind),yes)
|
||||
libunwind =
|
||||
@@ -522,8 +568,12 @@ else
|
||||
libunwind = -lunwind
|
||||
endif
|
||||
libgcc_eh := -Wl,--as-needed -lgcc_s $(libunwind) -Wl,--no-as-needed
|
||||
-gnulib := -lgcc $(libgcc_eh)
|
||||
-static-gnulib := -lgcc -lgcc_eh $(libunwind)
|
||||
+gnulib-arch =
|
||||
+gnulib = -lgcc $(gnulib-arch)
|
||||
+gnulib-tests := -lgcc $(libgcc_eh)
|
||||
+static-gnulib-arch =
|
||||
+static-gnulib = -lgcc $(static-gnulib-arch)
|
||||
+static-gnulib-tests := -lgcc -lgcc_eh $(libunwind)
|
||||
libc.so-gnulib := -lgcc
|
||||
endif
|
||||
+preinit = $(addprefix $(csu-objpfx),crti.o)
|
||||
diff --git a/Rules b/Rules
|
||||
index 3c61a29..17d938e 100644
|
||||
--- a/Rules
|
||||
+++ b/Rules
|
||||
@@ -1,5 +1,4 @@
|
||||
-# Copyright (C) 1991-2000,2002,2003,2004,2005,2006,2011
|
||||
-# Free Software Foundation, Inc.
|
||||
+# Copyright (C) 1991-2012 Free Software Foundation, Inc.
|
||||
# This file is part of the GNU C Library.
|
||||
|
||||
# The GNU C Library is free software; you can redistribute it and/or
|
||||
@@ -103,29 +102,46 @@ xtests: tests $(xtests:%=$(objpfx)%.out) $(xtests-bp.out)
|
||||
endif
|
||||
|
||||
ifeq ($(build-programs),yes)
|
||||
-binaries-all = $(others) $(sysdep-others) $(tests) $(xtests) $(test-srcs)
|
||||
-binaries-static = $(others-static) $(tests-static) $(xtests-static)
|
||||
+binaries-all-notests = $(others) $(sysdep-others)
|
||||
+binaries-all-tests = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all = $(binaries-all-notests) $(binaries-all-tests)
|
||||
+binaries-static-notests = $(others-static)
|
||||
+binaries-static-tests = $(tests-static) $(xtests-static)
|
||||
+binaries-static = $(binaries-static-notests) $(binaries-static-tests)
|
||||
ifeq (yesyes,$(have-fpie)$(build-shared))
|
||||
binaries-pie = $(others-pie) $(tests-pie) $(xtests-pie)
|
||||
else
|
||||
binaries-pie =
|
||||
endif
|
||||
else
|
||||
-binaries-all = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all-notests =
|
||||
+binaries-all-tests = $(tests) $(xtests) $(test-srcs)
|
||||
+binaries-all = $(binaries-all-tests)
|
||||
+binaries-static-notests =
|
||||
+binaries-static-tests =
|
||||
binaries-static =
|
||||
binaries-pie =
|
||||
endif
|
||||
|
||||
-binaries-shared = $(filter-out $(binaries-pie) $(binaries-static), \
|
||||
- $(binaries-all))
|
||||
+binaries-shared-tests = $(filter-out $(binaries-pie) $(binaries-static), \
|
||||
+ $(binaries-all-tests))
|
||||
+binaries-shared-notests = $(filter-out $(binaries-pie) $(binaries-static), \
|
||||
+ $(binaries-all-notests))
|
||||
|
||||
-ifneq "$(strip $(binaries-shared))" ""
|
||||
-$(addprefix $(objpfx),$(binaries-shared)): %: %.o \
|
||||
+ifneq "$(strip $(binaries-shared-notests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-shared-notests)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
$(+link)
|
||||
endif
|
||||
|
||||
+ifneq "$(strip $(binaries-shared-tests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-shared-tests)): %: %.o \
|
||||
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
+ $(+link-tests)
|
||||
+endif
|
||||
+
|
||||
ifneq "$(strip $(binaries-pie))" ""
|
||||
$(addprefix $(objpfx),$(binaries-pie)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc))) \
|
||||
@@ -133,13 +149,20 @@ $(addprefix $(objpfx),$(binaries-pie)): %: %.o \
|
||||
$(+link-pie)
|
||||
endif
|
||||
|
||||
-ifneq "$(strip $(binaries-static))" ""
|
||||
-$(addprefix $(objpfx),$(binaries-static)): %: %.o \
|
||||
+ifneq "$(strip $(binaries-static-notests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-static-notests)): %: %.o \
|
||||
$(sort $(filter $(common-objpfx)lib%,$(link-libc-static))) \
|
||||
$(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
$(+link-static)
|
||||
endif
|
||||
|
||||
+ifneq "$(strip $(binaries-static-tests))" ""
|
||||
+$(addprefix $(objpfx),$(binaries-static-tests)): %: %.o \
|
||||
+ $(sort $(filter $(common-objpfx)lib%,$(link-libc-static-tests))) \
|
||||
+ $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
|
||||
+ $(+link-static-tests)
|
||||
+endif
|
||||
+
|
||||
ifeq ($(build-bounded),yes)
|
||||
binaries-bounded = $(addsuffix -bp,$(tests) $(xtests) $(test-srcs))
|
||||
$(addprefix $(objpfx),$(binaries-bounded)): %-bp: %.ob \
|
||||
diff --git a/elf/Makefile b/elf/Makefile
|
||||
index 0c26ce5..9054199 100644
|
||||
--- a/elf/Makefile
|
||||
+++ b/elf/Makefile
|
||||
@@ -71,6 +71,8 @@ others = sprof sln pldd
|
||||
install-bin = sprof pldd
|
||||
others-static = sln
|
||||
install-rootsbin = sln
|
||||
+sln-modules := static-stubs
|
||||
+extra-objs += $(sln-modules:=.o)
|
||||
|
||||
ifeq (yes,$(use-ldconfig))
|
||||
ifeq (yes,$(build-shared))
|
||||
@@ -78,7 +80,7 @@ others-static += ldconfig
|
||||
others += ldconfig
|
||||
install-rootsbin += ldconfig
|
||||
|
||||
-ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon
|
||||
+ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon static-stubs
|
||||
extra-objs += $(ldconfig-modules:=.o)
|
||||
endif
|
||||
endif
|
||||
@@ -411,6 +413,8 @@ $(objpfx)ldd: ldd.bash.in $(common-objpfx)soversions.mk \
|
||||
|
||||
$(objpfx)sprof: $(libdl)
|
||||
|
||||
+$(objpfx)sln: $(sln-modules:%=$(objpfx)%.o)
|
||||
+
|
||||
$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
|
||||
|
||||
$(objpfx)pldd: $(pldd-modules:%=$(objpfx)%.o)
|
||||
diff --git a/elf/static-stubs.c b/elf/static-stubs.c
|
||||
new file mode 100644
|
||||
index 0000000..6c5eebc
|
||||
--- /dev/null
|
||||
+++ b/elf/static-stubs.c
|
||||
@@ -0,0 +1,46 @@
|
||||
+/* Stub implementations of functions to link into statically linked
|
||||
+ programs without needing libgcc_eh.
|
||||
+ Copyright (C) 2012 Free Software Foundation, Inc.
|
||||
+ This file is part of the GNU C Library.
|
||||
+
|
||||
+ The GNU C Library is free software; you can redistribute it and/or
|
||||
+ modify it under the terms of the GNU Lesser General Public
|
||||
+ License as published by the Free Software Foundation; either
|
||||
+ version 2.1 of the License, or (at your option) any later version.
|
||||
+
|
||||
+ The GNU C Library 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
|
||||
+ Lesser General Public License for more details.
|
||||
+
|
||||
+ You should have received a copy of the GNU Lesser General Public
|
||||
+ License along with the GNU C Library; if not, see
|
||||
+ <http://www.gnu.org/licenses/>. */
|
||||
+
|
||||
+/* Avoid backtrace (and so _Unwind_Backtrace) dependencies from
|
||||
+ sysdeps/unix/sysv/linux/libc_fatal.c. */
|
||||
+#include <sysdeps/posix/libc_fatal.c>
|
||||
+
|
||||
+#include <stdlib.h>
|
||||
+#include <unwind.h>
|
||||
+
|
||||
+/* These programs do not use thread cancellation, so _Unwind_Resume
|
||||
+ and the personality routine are never actually called. */
|
||||
+
|
||||
+void
|
||||
+_Unwind_Resume (struct _Unwind_Exception *exc __attribute__ ((unused)))
|
||||
+{
|
||||
+ abort ();
|
||||
+}
|
||||
+
|
||||
+_Unwind_Reason_Code
|
||||
+__gcc_personality_v0 (int version __attribute__ ((unused)),
|
||||
+ _Unwind_Action actions __attribute__ ((unused)),
|
||||
+ _Unwind_Exception_Class exception_class
|
||||
+ __attribute__ ((unused)),
|
||||
+ struct _Unwind_Exception *ue_header
|
||||
+ __attribute__ ((unused)),
|
||||
+ struct _Unwind_Context *context __attribute__ ((unused)))
|
||||
+{
|
||||
+ abort ();
|
||||
+}
|
||||
diff --git a/ports/ChangeLog.arm b/ports/ChangeLog.arm
|
||||
index c411e1c..71e8b1b 100644
|
||||
--- a/ports/ChangeLog.arm
|
||||
+++ b/ports/ChangeLog.arm
|
||||
@@ -1,3 +1,10 @@
|
||||
+2012-07-03 Joseph Myers <joseph@codesourcery.com>
|
||||
+
|
||||
+ * sysdeps/arm/Makefile (gnulib-arch): New variable.
|
||||
+ (static-gnulib-arch): Likewise.
|
||||
+ [subdir = elf] ($(objpfx)libgcc-stubs.a): New rule.
|
||||
+ [subdir = elf] (lib-noranlib): Depend on $(objpfx)libgcc-stubs.a.
|
||||
+
|
||||
2012-06-12 Joseph Myers <joseph@codesourcery.com>
|
||||
|
||||
* sysdeps/unix/sysv/linux/arm/setcontext.S (__startcontext): Use
|
||||
diff --git a/ports/sysdeps/arm/Makefile b/ports/sysdeps/arm/Makefile
|
||||
index 5fd5136..3bdb6b3 100644
|
||||
--- a/ports/sysdeps/arm/Makefile
|
||||
+++ b/ports/sysdeps/arm/Makefile
|
||||
@@ -1,8 +1,16 @@
|
||||
+gnulib-arch = $(elfobjdir)/libgcc-stubs.a
|
||||
+static-gnulib-arch = $(elfobjdir)/libgcc-stubs.a
|
||||
+
|
||||
ifeq ($(subdir),elf)
|
||||
sysdep-dl-routines += tlsdesc dl-tlsdesc
|
||||
sysdep_routines += aeabi_unwind_cpp_pr1 find_exidx tlsdesc dl-tlsdesc
|
||||
sysdep-rtld-routines += aeabi_unwind_cpp_pr1 tlsdesc dl-tlsdesc
|
||||
shared-only-routines += aeabi_unwind_cpp_pr1
|
||||
+
|
||||
+$(objpfx)libgcc-stubs.a: $(objpfx)aeabi_unwind_cpp_pr1.os
|
||||
+ $(build-extra-lib)
|
||||
+
|
||||
+lib-noranlib: $(objpfx)libgcc-stubs.a
|
||||
endif
|
||||
|
||||
ifeq ($(subdir),csu)
|
||||
--
|
||||
1.7.3.4
|
||||
|
||||
Loading…
Reference in new issue