Sparc STT_GNU_IFUNC support

1 files changed, 58 insertions, 0 deletions

diff --git a/sysdeps/sparc/sparc64/dl-irel.h b/sysdeps/sparc/sparc64/dl-irel.h
new file mode 100644
index 0000000000..1a2a0a3dd5
--- /dev/null
+++ b/sysdeps/sparc/sparc64/dl-irel.h
@@ -0,0 +1,58 @@
+/* Machine-dependent ELF indirect relocation inline functions.
+   SPARC 64-bit version.
+   Copyright (C) 2010 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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef _DL_IREL_H
+#define _DL_IREL_H
+
+#include <stdio.h>
+#include <unistd.h>
+#include <dl-plt.h>
+
+#define ELF_MACHINE_IRELA	1
+
+static inline void
+__attribute ((always_inline))
+elf_irela (const Elf64_Rela *reloc)
+{
+  unsigned int r_type = (reloc->r_info & 0xff);
+
+  if (__builtin_expect (r_type == R_SPARC_IRELATIVE, 1))
+    {
+      Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
+      Elf64_Addr value = ((Elf64_Addr (*) (void)) reloc->r_addend) ();
+      *reloc_addr = value;
+    }
+  else if (__builtin_expect (r_type == R_SPARC_JMP_IREL, 1))
+    {
+      Elf64_Addr *const reloc_addr = (void *) reloc->r_offset;
+      Elf64_Addr value = ((Elf64_Addr (*) (void)) reloc->r_addend) ();
+      struct link_map map = { .l_addr = 0 };
+
+      /* 'high' is always zero, for large PLT entries the linker
+	 emits an R_SPARC_IRELATIVE.  */
+      sparc64_fixup_plt (&map, reloc, reloc_addr, value, 0, 0);
+    }
+  else if (r_type == R_SPARC_NONE)
+    ;
+  else
+    __libc_fatal ("unexpected reloc type in static binary");
+}
+
+#endif /* dl-irel.h */