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Fix ordering of DSO constructors and destructors.
This commit is contained in:
parent
86e9235918
commit
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27
ChangeLog
27
ChangeLog
@ -1,3 +1,30 @@
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2011-01-19 Ulrich Drepper <drepper@gmail.com>
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* elf/dl-deps.c (_dl_map_object_deps): Rewrite sorting determining order
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of constructors.
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* elf/dl-fini.c (_dl_sort_fini): Rewrite sorting determining order
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of destructors.
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(_dl_fini): Don't call _dl_sort_fini if there is only one object.
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[BZ #11724]
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* elf/Makefile: Add rules to build and run new test.
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* elf/tst-initorder.c: New file.
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* elf/tst-initorder.exp: New file.
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* elf/tst-initordera1.c: New file.
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* elf/tst-initordera2.c: New file.
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* elf/tst-initordera3.c: New file.
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* elf/tst-initordera4.c: New file.
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* elf/tst-initorderb1.c: New file.
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* elf/tst-initorderb2.c: New file.
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* elf/tst-order-a1.c: New file.
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* elf/tst-order-a2.c: New file.
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* elf/tst-order-a3.c: New file.
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* elf/tst-order-a4.c: New file.
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* elf/tst-order-b1.c: New file.
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* elf/tst-order-b2.c: New file.
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* elf/tst-order-main.c: New file.
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New test case by George Gensure <werkt0@gmail.com>.
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2010-10-01 Andreas Schwab <schwab@redhat.com>
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2010-10-01 Andreas Schwab <schwab@redhat.com>
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* sysdeps/posix/getaddrinfo.c (gaih_inet): Don't discard result of
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* sysdeps/posix/getaddrinfo.c (gaih_inet): Don't discard result of
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24
elf/Makefile
24
elf/Makefile
@ -118,7 +118,10 @@ distribute := rtld-Rules \
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ifuncmain7.c ifuncmain7pic.c ifuncmain7picstatic.c \
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ifuncmain7.c ifuncmain7pic.c ifuncmain7picstatic.c \
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ifuncmain7pie.c ifuncmain7static.c \
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ifuncmain7pie.c ifuncmain7static.c \
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tst-unique1.c tst-unique1mod1.c tst-unique1mod2.c \
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tst-unique1.c tst-unique1mod1.c tst-unique1mod2.c \
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tst-unique2.c tst-unique2mod1.c tst-unique2mod2.c
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tst-unique2.c tst-unique2mod1.c tst-unique2mod2.c \
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tst-initordera1.c tst-initordera2.c tst-initorderb1.c \
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tst-initorderb2.c tst-initordera3.c tst-initordera4.c \
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tst-initorder.c
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CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables
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CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables
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CFLAGS-dl-lookup.c = -fexceptions -fasynchronous-unwind-tables
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CFLAGS-dl-lookup.c = -fexceptions -fasynchronous-unwind-tables
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@ -198,7 +201,8 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
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unload3 unload4 unload5 unload6 unload7 tst-global1 order2 \
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unload3 unload4 unload5 unload6 unload7 tst-global1 order2 \
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tst-audit1 tst-audit2 \
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tst-audit1 tst-audit2 \
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tst-stackguard1 tst-addr1 tst-thrlock \
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tst-stackguard1 tst-addr1 tst-thrlock \
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tst-unique1 tst-unique2
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tst-unique1 tst-unique2 \
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tst-initorder
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# reldep9
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# reldep9
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test-srcs = tst-pathopt
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test-srcs = tst-pathopt
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tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
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tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
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@ -250,7 +254,10 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \
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unload7mod1 unload7mod2 \
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unload7mod1 unload7mod2 \
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order2mod1 order2mod2 order2mod3 order2mod4 \
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order2mod1 order2mod2 order2mod3 order2mod4 \
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tst-unique1mod1 tst-unique1mod2 \
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tst-unique1mod1 tst-unique1mod2 \
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tst-unique2mod1 tst-unique2mod2
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tst-unique2mod1 tst-unique2mod2 \
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tst-initordera1 tst-initorderb1 \
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tst-initordera2 tst-initorderb2 \
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tst-initordera3 tst-initordera4
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ifeq (yes,$(have-initfini-array))
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ifeq (yes,$(have-initfini-array))
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modules-names += tst-array2dep tst-array5dep
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modules-names += tst-array2dep tst-array5dep
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endif
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endif
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@ -531,6 +538,11 @@ $(objpfx)unload6mod2.so: $(libdl)
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$(objpfx)unload6mod3.so: $(libdl)
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$(objpfx)unload6mod3.so: $(libdl)
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$(objpfx)unload7mod1.so: $(libdl)
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$(objpfx)unload7mod1.so: $(libdl)
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$(objpfx)unload7mod2.so: $(objpfx)unload7mod1.so
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$(objpfx)unload7mod2.so: $(objpfx)unload7mod1.so
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$(objpfx)tst-initordera2.so: $(objpfx)tst-initordera1.so
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$(objpfx)tst-initorderb2.so: $(objpfx)tst-initorderb1.so $(objpfx)tst-initordera2.so
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$(objpfx)tst-initordera3.so: $(objpfx)tst-initorderb2.so $(objpfx)tst-initorderb1.so
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$(objpfx)tst-initordera4.so: $(objpfx)tst-initordera3.so
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$(objpfx)tst-initorder: $(objpfx)tst-initordera4.so $(objpfx)tst-initordera1.so $(objpfx)tst-initorderb2.so
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LDFLAGS-tst-tlsmod5.so = -nostdlib
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LDFLAGS-tst-tlsmod5.so = -nostdlib
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LDFLAGS-tst-tlsmod6.so = -nostdlib
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LDFLAGS-tst-tlsmod6.so = -nostdlib
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@ -1162,6 +1174,12 @@ $(objpfx)tst-unique1.out: $(objpfx)tst-unique1mod1.so \
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$(objpfx)tst-unique2: $(libdl) $(objpfx)tst-unique2mod1.so
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$(objpfx)tst-unique2: $(libdl) $(objpfx)tst-unique2mod1.so
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$(objpfx)tst-unique2.out: $(objpfx)tst-unique2mod2.so
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$(objpfx)tst-unique2.out: $(objpfx)tst-unique2mod2.so
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$(objpfx)tst-initorder.out: $(objpfx)tst-initorder
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$(elf-objpfx)${rtld-installed-name} \
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--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
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$< > $@
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cmp $@ tst-initorder.exp > /dev/null
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ifeq (yes,$(config-cflags-avx))
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ifeq (yes,$(config-cflags-avx))
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CFLAGS-tst-audit4.c += -mavx
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CFLAGS-tst-audit4.c += -mavx
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CFLAGS-tst-auditmod4a.c += -mavx
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CFLAGS-tst-auditmod4a.c += -mavx
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@ -1,5 +1,5 @@
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/* Load the dependencies of a mapped object.
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/* Load the dependencies of a mapped object.
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Copyright (C) 1996-2003, 2004, 2005, 2006, 2007, 2010
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Copyright (C) 1996-2003, 2004, 2005, 2006, 2007, 2010, 2011
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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@ -591,7 +591,7 @@ Filters not supported with LD_TRACE_PRELINKING"));
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/* Need to allocate new array of relocation dependencies. */
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/* Need to allocate new array of relocation dependencies. */
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struct link_map_reldeps *l_reldeps;
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struct link_map_reldeps *l_reldeps;
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l_reldeps = malloc (sizeof (*l_reldeps)
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l_reldeps = malloc (sizeof (*l_reldeps)
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+ map->l_reldepsmax
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+ map->l_reldepsmax
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* sizeof (struct link_map *));
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* sizeof (struct link_map *));
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if (l_reldeps == NULL)
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if (l_reldeps == NULL)
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/* Bad luck, keep the reldeps duplicated between
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/* Bad luck, keep the reldeps duplicated between
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@ -616,48 +616,60 @@ Filters not supported with LD_TRACE_PRELINKING"));
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/* Now determine the order in which the initialization has to happen. */
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/* Now determine the order in which the initialization has to happen. */
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memcpy (l_initfini, map->l_searchlist.r_list,
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memcpy (l_initfini, map->l_searchlist.r_list,
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nlist * sizeof (struct link_map *));
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nlist * sizeof (struct link_map *));
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/* We can skip looking for the binary itself which is at the front
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/* We can skip looking for the binary itself which is at the front
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of the search list. Look through the list backward so that circular
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of the search list. */
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dependencies are not changing the order. */
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assert (nlist > 1);
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for (i = 1; i < nlist; ++i)
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i = 1;
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bool seen[nlist];
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memset (seen, false, nlist * sizeof (seen[0]));
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while (1)
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{
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{
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struct link_map *l = map->l_searchlist.r_list[i];
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/* Keep track of which object we looked at this round. */
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unsigned int j;
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seen[i] = true;
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unsigned int k;
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struct link_map *thisp = l_initfini[i];
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/* Find the place in the initfini list where the map is currently
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/* Find the last object in the list for which the current one is
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located. */
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a dependency and move the current object behind the object
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for (j = 1; l_initfini[j] != l; ++j)
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with the dependency. */
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;
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unsigned int k = nlist - 1;
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while (k > i)
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/* Find all object for which the current one is a dependency and
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move the found object (if necessary) in front. */
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for (k = j + 1; k < nlist; ++k)
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{
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{
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struct link_map **runp;
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struct link_map **runp = l_initfini[k]->l_initfini;
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runp = l_initfini[k]->l_initfini;
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if (runp != NULL)
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if (runp != NULL)
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{
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/* Look through the dependencies of the object. */
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while (*runp != NULL)
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while (*runp != NULL)
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if (__builtin_expect (*runp++ == l, 0))
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if (__builtin_expect (*runp++ == thisp, 0))
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{
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{
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struct link_map *here = l_initfini[k];
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/* Move the current object to the back past the last
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object with it as the dependency. */
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memmove (&l_initfini[i], &l_initfini[i + 1],
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(k - i) * sizeof (l_initfini[0]));
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l_initfini[k] = thisp;
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/* Move it now. */
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if (seen[i + 1])
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memmove (&l_initfini[j] + 1, &l_initfini[j],
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{
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(k - j) * sizeof (struct link_map *));
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++i;
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l_initfini[j] = here;
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goto next_clear;
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}
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/* Don't insert further matches before the last
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memmove (&seen[i], &seen[i + 1], (k - i) * sizeof (seen[0]));
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entry moved to the front. */
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seen[k] = true;
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++j;
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break;
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goto next;
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}
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}
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}
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--k;
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}
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}
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if (++i == nlist)
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break;
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next_clear:
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memset (&seen[i], false, (nlist - i) * sizeof (seen[0]));
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next:;
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}
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}
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/* Terminate the list of dependencies. */
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/* Terminate the list of dependencies. */
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l_initfini[nlist] = NULL;
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l_initfini[nlist] = NULL;
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atomic_write_barrier ();
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atomic_write_barrier ();
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143
elf/dl-fini.c
143
elf/dl-fini.c
@ -1,5 +1,6 @@
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/* Call the termination functions of loaded shared objects.
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/* Call the termination functions of loaded shared objects.
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Copyright (C) 1995,96,1998-2002,2004-2005,2009 Free Software Foundation, Inc.
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Copyright (C) 1995,96,1998-2002,2004-2005,2009,2011
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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The GNU C Library is free software; you can redistribute it and/or
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@ -32,86 +33,84 @@ internal_function
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_dl_sort_fini (struct link_map *l, struct link_map **maps, size_t nmaps,
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_dl_sort_fini (struct link_map *l, struct link_map **maps, size_t nmaps,
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char *used, Lmid_t ns)
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char *used, Lmid_t ns)
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{
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{
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if (ns == LM_ID_BASE)
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/* We can skip looking for the binary itself which is at the front
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/* The main executable always comes first. */
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of the search list for the main namespace. */
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l = l->l_next;
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assert (nmaps > 1);
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unsigned int i = ns == LM_ID_BASE;
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bool seen[nmaps];
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memset (seen, false, nmaps * sizeof (seen[0]));
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while (1)
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{
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/* Keep track of which object we looked at this round. */
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seen[i] = true;
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struct link_map *thisp = maps[i];
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for (; l != NULL; l = l->l_next)
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/* Do not handle ld.so in secondary namespaces and object which
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/* Do not handle ld.so in secondary namespaces and object which
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are not removed. */
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are not removed. */
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if (thisp != thisp->l_real || thisp->l_idx == -1)
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if (l == l->l_real && l->l_idx != -1)
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goto skip;
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{
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/* Find the place in the 'maps' array. */
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unsigned int j;
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for (j = ns == LM_ID_BASE ? 1 : 0; maps[j] != l; ++j)
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assert (j < nmaps);
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/* Find all object for which the current one is a dependency
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/* Find the last object in the list for which the current one is
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and move the found object (if necessary) in front. */
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a dependency and move the current object behind the object
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for (unsigned int k = j + 1; k < nmaps; ++k)
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with the dependency. */
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{
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unsigned int k = nmaps - 1;
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struct link_map **runp = maps[k]->l_initfini;
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while (k > i)
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if (runp != NULL)
|
{
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{
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struct link_map **runp = maps[k]->l_initfini;
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while (*runp != NULL)
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if (runp != NULL)
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if (*runp == l)
|
/* Look through the dependencies of the object. */
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|
while (*runp != NULL)
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if (__builtin_expect (*runp++ == thisp, 0))
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{
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move:
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/* Move the current object to the back past the last
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object with it as the dependency. */
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memmove (&maps[i], &maps[i + 1],
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(k - i) * sizeof (maps[0]));
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|
maps[k] = thisp;
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|
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|
if (used != NULL)
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{
|
{
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struct link_map *here = maps[k];
|
char here_used = used[i];
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|
memmove (&used[i], &used[i + 1],
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/* Move it now. */
|
(k - i) * sizeof (used[0]));
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memmove (&maps[j] + 1,
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used[k] = here_used;
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&maps[j], (k - j) * sizeof (struct link_map *));
|
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maps[j] = here;
|
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|
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if (used != NULL)
|
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{
|
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char here_used = used[k];
|
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|
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memmove (&used[j] + 1,
|
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&used[j], (k - j) * sizeof (char));
|
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used[j] = here_used;
|
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}
|
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|
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++j;
|
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|
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break;
|
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}
|
}
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else
|
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++runp;
|
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}
|
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|
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if (__builtin_expect (maps[k]->l_reldeps != NULL, 0))
|
if (seen[i + 1])
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{
|
{
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unsigned int m = maps[k]->l_reldeps->act;
|
++i;
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struct link_map **relmaps = &maps[k]->l_reldeps->list[0];
|
goto next_clear;
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|
}
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|
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while (m-- > 0)
|
memmove (&seen[i], &seen[i + 1], (k - i) * sizeof (seen[0]));
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{
|
seen[k] = true;
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if (relmaps[m] == l)
|
|
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{
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struct link_map *here = maps[k];
|
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|
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/* Move it now. */
|
goto next;
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memmove (&maps[j] + 1,
|
}
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&maps[j],
|
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(k - j) * sizeof (struct link_map *));
|
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maps[j] = here;
|
|
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|
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if (used != NULL)
|
if (__builtin_expect (maps[k]->l_reldeps != NULL, 0))
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{
|
{
|
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char here_used = used[k];
|
unsigned int m = maps[k]->l_reldeps->act;
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|
struct link_map **relmaps = &maps[k]->l_reldeps->list[0];
|
||||||
|
|
||||||
memmove (&used[j] + 1,
|
/* Look through the relocation dependencies of the object. */
|
||||||
&used[j], (k - j) * sizeof (char));
|
while (m-- > 0)
|
||||||
used[j] = here_used;
|
if (__builtin_expect (relmaps[m] == thisp, 0))
|
||||||
}
|
goto move;
|
||||||
|
}
|
||||||
|
|
||||||
break;
|
--k;
|
||||||
}
|
}
|
||||||
}
|
|
||||||
}
|
skip:
|
||||||
}
|
if (++i == nmaps)
|
||||||
}
|
break;
|
||||||
|
next_clear:
|
||||||
|
memset (&seen[i], false, (nmaps - i) * sizeof (seen[0]));
|
||||||
|
|
||||||
|
next:;
|
||||||
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
@ -196,7 +195,7 @@ _dl_fini (void)
|
|||||||
assert (ns == LM_ID_BASE || i == nloaded || i == nloaded - 1);
|
assert (ns == LM_ID_BASE || i == nloaded || i == nloaded - 1);
|
||||||
nmaps = i;
|
nmaps = i;
|
||||||
|
|
||||||
if (nmaps != 0)
|
if (nmaps > 1)
|
||||||
/* Now we have to do the sorting. */
|
/* Now we have to do the sorting. */
|
||||||
_dl_sort_fini (GL(dl_ns)[ns]._ns_loaded, maps, nmaps, NULL, ns);
|
_dl_sort_fini (GL(dl_ns)[ns]._ns_loaded, maps, nmaps, NULL, ns);
|
||||||
|
|
||||||
|
7
elf/tst-initorder.c
Normal file
7
elf/tst-initorder.c
Normal file
@ -0,0 +1,7 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
int
|
||||||
|
main( int argc, char *argv[] )
|
||||||
|
{
|
||||||
|
printf( "main\n" );
|
||||||
|
}
|
13
elf/tst-initorder.exp
Normal file
13
elf/tst-initorder.exp
Normal file
@ -0,0 +1,13 @@
|
|||||||
|
start_a1
|
||||||
|
start_a2
|
||||||
|
start_b1
|
||||||
|
start_b2
|
||||||
|
start_a3
|
||||||
|
start_a4
|
||||||
|
main
|
||||||
|
finish_a4
|
||||||
|
finish_a3
|
||||||
|
finish_b2
|
||||||
|
finish_b1
|
||||||
|
finish_a2
|
||||||
|
finish_a1
|
16
elf/tst-initordera1.c
Normal file
16
elf/tst-initordera1.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a1( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a1( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a1( void )
|
||||||
|
{
|
||||||
|
printf( "start_a1\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a1( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a1\n" );
|
||||||
|
}
|
16
elf/tst-initordera2.c
Normal file
16
elf/tst-initordera2.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a2( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a2( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a2( void )
|
||||||
|
{
|
||||||
|
printf( "start_a2\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a2( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a2\n" );
|
||||||
|
}
|
16
elf/tst-initordera3.c
Normal file
16
elf/tst-initordera3.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a3( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a3( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a3( void )
|
||||||
|
{
|
||||||
|
printf( "start_a3\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a3( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a3\n" );
|
||||||
|
}
|
16
elf/tst-initordera4.c
Normal file
16
elf/tst-initordera4.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a4( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a4( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a4( void )
|
||||||
|
{
|
||||||
|
printf( "start_a4\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a4( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a4\n" );
|
||||||
|
}
|
16
elf/tst-initorderb1.c
Normal file
16
elf/tst-initorderb1.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_b1( void ) __attribute__((constructor));
|
||||||
|
extern void finish_b1( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_b1( void )
|
||||||
|
{
|
||||||
|
printf( "start_b1\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_b1( void )
|
||||||
|
{
|
||||||
|
printf( "finish_b1\n" );
|
||||||
|
}
|
16
elf/tst-initorderb2.c
Normal file
16
elf/tst-initorderb2.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_b2( void ) __attribute__((constructor));
|
||||||
|
extern void finish_b2( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_b2( void )
|
||||||
|
{
|
||||||
|
printf( "start_b2\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_b2( void )
|
||||||
|
{
|
||||||
|
printf( "finish_b2\n" );
|
||||||
|
}
|
16
elf/tst-order-a1.c
Normal file
16
elf/tst-order-a1.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a1( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a1( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a1( void )
|
||||||
|
{
|
||||||
|
printf( "start_a1\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a1( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a1\n" );
|
||||||
|
}
|
16
elf/tst-order-a2.c
Normal file
16
elf/tst-order-a2.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a2( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a2( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a2( void )
|
||||||
|
{
|
||||||
|
printf( "start_a2\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a2( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a2\n" );
|
||||||
|
}
|
16
elf/tst-order-a3.c
Normal file
16
elf/tst-order-a3.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a3( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a3( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a3( void )
|
||||||
|
{
|
||||||
|
printf( "start_a3\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a3( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a3\n" );
|
||||||
|
}
|
16
elf/tst-order-a4.c
Normal file
16
elf/tst-order-a4.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_a4( void ) __attribute__((constructor));
|
||||||
|
extern void finish_a4( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_a4( void )
|
||||||
|
{
|
||||||
|
printf( "start_a4\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_a4( void )
|
||||||
|
{
|
||||||
|
printf( "finish_a4\n" );
|
||||||
|
}
|
16
elf/tst-order-b1.c
Normal file
16
elf/tst-order-b1.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_b1( void ) __attribute__((constructor));
|
||||||
|
extern void finish_b1( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_b1( void )
|
||||||
|
{
|
||||||
|
printf( "start_b1\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_b1( void )
|
||||||
|
{
|
||||||
|
printf( "finish_b1\n" );
|
||||||
|
}
|
16
elf/tst-order-b2.c
Normal file
16
elf/tst-order-b2.c
Normal file
@ -0,0 +1,16 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
|
||||||
|
extern void start_b2( void ) __attribute__((constructor));
|
||||||
|
extern void finish_b2( void ) __attribute__((destructor));
|
||||||
|
|
||||||
|
void
|
||||||
|
start_b2( void )
|
||||||
|
{
|
||||||
|
printf( "start_b2\n" );
|
||||||
|
}
|
||||||
|
|
||||||
|
void
|
||||||
|
finish_b2( void )
|
||||||
|
{
|
||||||
|
printf( "finish_b2\n" );
|
||||||
|
}
|
10
elf/tst-order-main.c
Normal file
10
elf/tst-order-main.c
Normal file
@ -0,0 +1,10 @@
|
|||||||
|
#include <stdio.h>
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <stdlib.h>
|
||||||
|
|
||||||
|
int
|
||||||
|
main( int argc, char *argv[] )
|
||||||
|
{
|
||||||
|
printf( "main\n" );
|
||||||
|
exit(EXIT_SUCCESS);
|
||||||
|
}
|
Loading…
Reference in New Issue
Block a user