diff options
Diffstat (limited to 'testing/glibc/glibc-2.15-ifunc.patch')
| -rw-r--r-- | testing/glibc/glibc-2.15-ifunc.patch | 262 |
1 files changed, 0 insertions, 262 deletions
diff --git a/testing/glibc/glibc-2.15-ifunc.patch b/testing/glibc/glibc-2.15-ifunc.patch deleted file mode 100644 index 115afa02a..000000000 --- a/testing/glibc/glibc-2.15-ifunc.patch +++ /dev/null @@ -1,262 +0,0 @@ -diff --git a/Makeconfig b/Makeconfig -index 2db2821..68547b2 100644 ---- a/Makeconfig -+++ b/Makeconfig -@@ -900,6 +900,12 @@ else - libdl = $(common-objpfx)dlfcn/libdl.a - endif - -+ifeq ($(build-shared),yes) -+libm = $(common-objpfx)math/libm.so$(libm.so-version) -+else -+libm = $(common-objpfx)math/libm.a -+endif -+ - # These are the subdirectories containing the library source. The order - # is more or less arbitrary. The sorting step will take care of the - # dependencies. -diff --git a/elf/Makefile b/elf/Makefile -index 052e763..3f1772a 100644 ---- a/elf/Makefile -+++ b/elf/Makefile -@@ -124,7 +124,8 @@ distribute := rtld-Rules \ - tst-initordera1.c tst-initordera2.c tst-initorderb1.c \ - tst-initorderb2.c tst-initordera3.c tst-initordera4.c \ - tst-initorder.c \ -- tst-initorder2.c -+ tst-initorder2.c \ -+ tst-relsort1.c tst-relsort1mod1.c tst-relsort1mod2.c - - CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables - CFLAGS-dl-lookup.c = -fexceptions -fasynchronous-unwind-tables -@@ -227,7 +228,7 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ - tst-audit1 tst-audit2 \ - tst-stackguard1 tst-addr1 tst-thrlock \ - tst-unique1 tst-unique2 tst-unique3 tst-unique4 \ -- tst-initorder tst-initorder2 -+ tst-initorder tst-initorder2 tst-relsort1 - # reldep9 - test-srcs = tst-pathopt - selinux-enabled := $(shell cat /selinux/enforce 2> /dev/null) -@@ -290,7 +291,9 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ - tst-initordera1 tst-initorderb1 \ - tst-initordera2 tst-initorderb2 \ - tst-initordera3 tst-initordera4 \ -- tst-initorder2a tst-initorder2b tst-initorder2c tst-initorder2d -+ tst-initorder2a tst-initorder2b tst-initorder2c \ -+ tst-initorder2d \ -+ tst-relsort1mod1 tst-relsort1mod2 - ifeq (yes,$(have-initfini-array)) - modules-names += tst-array2dep tst-array5dep - endif -@@ -1195,3 +1198,9 @@ CFLAGS-tst-auditmod6b.c += $(AVX-CFLAGS) - CFLAGS-tst-auditmod6c.c += $(AVX-CFLAGS) - CFLAGS-tst-auditmod7b.c += $(AVX-CFLAGS) - endif -+ -+$(objpfx)tst-relsort1: $(libdl) -+$(objpfx)tst-relsort1mod1.so: $(libm) $(objpfx)tst-relsort1mod2.so -+$(objpfx)tst-relsort1mod2.so: $(libm) -+$(objpfx)tst-relsort1.out: $(objpfx)tst-relsort1mod1.so \ -+ $(objpfx)tst-relsort1mod2.so -diff --git a/elf/dl-open.c b/elf/dl-open.c -index a0b5c50..a56bdc1 100644 ---- a/elf/dl-open.c -+++ b/elf/dl-open.c -@@ -1,5 +1,5 @@ - /* Load a shared object at runtime, relocate it, and run its initializer. -- Copyright (C) 1996-2007, 2009, 2010, 2011 Free Software Foundation, Inc. -+ Copyright (C) 1996-2007, 2009, 2010, 2011, 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 -@@ -302,45 +302,109 @@ dl_open_worker (void *a) - if (GLRO(dl_lazy)) - reloc_mode |= mode & RTLD_LAZY; - -- /* Relocate the objects loaded. We do this in reverse order so that copy -- relocs of earlier objects overwrite the data written by later objects. */ -- -+ /* Sort the objects by dependency for the relocation process. This -+ allows IFUNC relocations to work and it also means copy -+ relocation of dependencies are if necessary overwritten. */ -+ size_t nmaps = 0; - struct link_map *l = new; -- while (l->l_next) -- l = l->l_next; -- while (1) -+ do -+ { -+ if (! l->l_real->l_relocated) -+ ++nmaps; -+ l = l->l_next; -+ } -+ while (l != NULL); -+ struct link_map *maps[nmaps]; -+ nmaps = 0; -+ l = new; -+ do - { - if (! l->l_real->l_relocated) -+ maps[nmaps++] = l; -+ l = l->l_next; -+ } -+ while (l != NULL); -+ if (nmaps > 1) -+ { -+ char seen[nmaps]; -+ memset (seen, '\0', nmaps); -+ size_t i = 0; -+ while (1) - { --#ifdef SHARED -- if (__builtin_expect (GLRO(dl_profile) != NULL, 0)) -+ ++seen[i]; -+ struct link_map *thisp = maps[i]; -+ -+ /* Find the last object in the list for which the current one is -+ a dependency and move the current object behind the object -+ with the dependency. */ -+ size_t k = nmaps - 1; -+ while (k > i) - { -- /* If this here is the shared object which we want to profile -- make sure the profile is started. We can find out whether -- this is necessary or not by observing the `_dl_profile_map' -- variable. If was NULL but is not NULL afterwars we must -- start the profiling. */ -- struct link_map *old_profile_map = GL(dl_profile_map); -+ struct link_map **runp = maps[k]->l_initfini; -+ if (runp != NULL) -+ /* Look through the dependencies of the object. */ -+ while (*runp != NULL) -+ if (__builtin_expect (*runp++ == thisp, 0)) -+ { -+ /* Move the current object to the back past the last -+ object with it as the dependency. */ -+ memmove (&maps[i], &maps[i + 1], -+ (k - i) * sizeof (maps[0])); -+ maps[k] = thisp; -+ -+ if (seen[i + 1] > 1) -+ { -+ ++i; -+ goto next_clear; -+ } -+ -+ char this_seen = seen[i]; -+ memmove (&seen[i], &seen[i + 1], -+ (k - i) * sizeof (seen[0])); -+ seen[k] = this_seen; -+ -+ goto next; -+ } -+ -+ --k; -+ } - -- _dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1); -+ if (++i == nmaps) -+ break; -+ next_clear: -+ memset (&seen[i], 0, (nmaps - i) * sizeof (seen[0])); -+ next:; -+ } -+ } - -- if (old_profile_map == NULL && GL(dl_profile_map) != NULL) -- { -- /* We must prepare the profiling. */ -- _dl_start_profile (); -+ for (size_t i = nmaps; i-- > 0; ) -+ { -+ l = maps[i]; - -- /* Prevent unloading the object. */ -- GL(dl_profile_map)->l_flags_1 |= DF_1_NODELETE; -- } -+#ifdef SHARED -+ if (__builtin_expect (GLRO(dl_profile) != NULL, 0)) -+ { -+ /* If this here is the shared object which we want to profile -+ make sure the profile is started. We can find out whether -+ this is necessary or not by observing the `_dl_profile_map' -+ variable. If it was NULL but is not NULL afterwars we must -+ start the profiling. */ -+ struct link_map *old_profile_map = GL(dl_profile_map); -+ -+ _dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1); -+ -+ if (old_profile_map == NULL && GL(dl_profile_map) != NULL) -+ { -+ /* We must prepare the profiling. */ -+ _dl_start_profile (); -+ -+ /* Prevent unloading the object. */ -+ GL(dl_profile_map)->l_flags_1 |= DF_1_NODELETE; - } -- else --#endif -- _dl_relocate_object (l, l->l_scope, reloc_mode, 0); - } -- -- if (l == new) -- break; -- l = l->l_prev; -+ else -+#endif -+ _dl_relocate_object (l, l->l_scope, reloc_mode, 0); - } - - /* If the file is not loaded now as a dependency, add the search -diff --git a/elf/tst-relsort1.c b/elf/tst-relsort1.c -new file mode 100644 -index 0000000..972100c ---- /dev/null -+++ b/elf/tst-relsort1.c -@@ -0,0 +1,19 @@ -+#include <dlfcn.h> -+#include <stdio.h> -+ -+ -+static int -+do_test () -+{ -+ const char lib[] = "$ORIGIN/tst-relsort1mod1.so"; -+ void *h = dlopen (lib, RTLD_NOW); -+ if (h == NULL) -+ { -+ puts (dlerror ()); -+ return 1; -+ } -+ return 0; -+} -+ -+#define TEST_FUNCTION do_test () -+#include "../test-skeleton.c" -diff --git a/elf/tst-relsort1mod1.c b/elf/tst-relsort1mod1.c -new file mode 100644 -index 0000000..9e4a943 ---- /dev/null -+++ b/elf/tst-relsort1mod1.c -@@ -0,0 +1,7 @@ -+extern int foo (double); -+ -+int -+bar (void) -+{ -+ return foo (1.2); -+} -diff --git a/elf/tst-relsort1mod2.c b/elf/tst-relsort1mod2.c -new file mode 100644 -index 0000000..a2c3e55 ---- /dev/null -+++ b/elf/tst-relsort1mod2.c -@@ -0,0 +1,7 @@ -+#include <math.h> -+ -+int -+foo (double d) -+{ -+ return floor (d) != 0.0; -+} |