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authorUlrich Drepper <drepper@redhat.com>2009-05-31 23:45:33 -0700
committerUlrich Drepper <drepper@redhat.com>2009-05-31 23:45:33 -0700
commit74414708355a922a514d5c76183eca6931c4488a (patch)
tree60dd084df2e9f02464f66b0da2068f4561856458 /csu
parent963cb6fcb47ca212c0c57cc57bd7510f6549579c (diff)
downloadglibc-74414708355a922a514d5c76183eca6931c4488a.tar.gz
Finish IFUNC support for x86 and x86-64.
Add support for the IRELAIVE relocation and IFUNC in static executables.
Diffstat (limited to 'csu')
-rw-r--r--csu/elf-init.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/csu/elf-init.c b/csu/elf-init.c
index 27eae1550b..5a99a3a400 100644
--- a/csu/elf-init.c
+++ b/csu/elf-init.c
@@ -36,6 +36,20 @@
#include <stddef.h>
+#ifndef LIBC_NONSHARED
+# include <link.h>
+# include <dl-irel.h>
+
+# ifdef ELF_MACHINE_IRELA
+extern const ElfW(Rela) __rela_iplt_start [];
+extern const ElfW(Rela) __rela_iplt_end [];
+# endif
+
+# ifdef ELF_MACHINE_IREL
+extern const ElfW(Rel) __rel_iplt_start [];
+extern const ElfW(Rel) __rel_iplt_end [];
+# endif
+#endif /* LIBC_NONSHARED */
/* These magic symbols are provided by the linker. */
extern void (*__preinit_array_start []) (int, char **, char **)
@@ -67,6 +81,22 @@ __libc_csu_init (int argc, char **argv, char **envp)
the dynamic linker (before initializing any shared object. */
#ifndef LIBC_NONSHARED
+# ifdef ELF_MACHINE_IRELA
+ {
+ const size_t size = __rela_iplt_end - __rela_iplt_start;
+ for (size_t i = 0; i < size; i++)
+ elf_irela (&__rela_iplt_start [i]);
+ }
+# endif
+
+# ifdef ELF_MACHINE_IREL
+ {
+ const size_t size = __rel_iplt_end - __rel_iplt_start;
+ for (size_t i = 0; i < size; i++)
+ elf_irel (&__rel_iplt_start [i]);
+ }
+# endif
+
/* For static executables, preinit happens rights before init. */
{
const size_t size = __preinit_array_end - __preinit_array_start;