[commits] r13608 - in /fsf/trunk/ports: ./ sysdeps/arm/ sysdeps/unix/sysv/linux/arm/eabi/

[eglibc@xxxxxxxxxx]

Author: eglibc
Date: Wed Apr 27 00:03:41 2011
New Revision: 13608

Log:
Import glibc-ports-mainline for 2011-04-27

Added:
    fsf/trunk/ports/sysdeps/arm/dl-irel.h
Modified:
    fsf/trunk/ports/ChangeLog.arm
    fsf/trunk/ports/sysdeps/arm/dl-machine.h
    fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S

Modified: fsf/trunk/ports/ChangeLog.arm
==============================================================================
--- fsf/trunk/ports/ChangeLog.arm (original)
+++ fsf/trunk/ports/ChangeLog.arm Wed Apr 27 00:03:41 2011
@@ -1,3 +1,15 @@
+2011-04-26  Manjunath Matti  <manjunath81@xxxxxxxxx>
+
+	* sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S
+	(CALL_MCOUNT): Redefine to empty.
+
+2011-04-26  Richard Sandiford  <richard.sandiford@xxxxxxxxxx>
+
+	* sysdeps/arm/dl-machine.h (elf_machine_rel): Handle STT_GNU_IFUNC
+	and R_ARM_IRELATIVE.
+	(elf_machine_rela): Likewise.
+	* sysdeps/arm/dl-irel.h: New file.
+
 2011-04-11  Joseph Myers  <joseph@xxxxxxxxxxxxxxxx>
 
 	* sysdeps/arm/dl-tls.h (TLS_DTV_UNALLOCATED): Define.

Added: fsf/trunk/ports/sysdeps/arm/dl-irel.h
==============================================================================
--- fsf/trunk/ports/sysdeps/arm/dl-irel.h (added)
+++ fsf/trunk/ports/sysdeps/arm/dl-irel.h Wed Apr 27 00:03:41 2011
@@ -1,0 +1,45 @@
+/* Machine-dependent ELF indirect relocation inline functions.
+   ARM version.
+   Copyright (C) 2009, 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>
+
+#define ELF_MACHINE_IREL	1
+
+static inline void
+__attribute ((always_inline))
+elf_irel (const Elf32_Rel *reloc)
+{
+  Elf32_Addr *const reloc_addr = (void *) reloc->r_offset;
+  const unsigned long int r_type = ELF32_R_TYPE (reloc->r_info);
+
+  if (__builtin_expect (r_type == R_ARM_IRELATIVE, 1))
+    {
+      Elf32_Addr value = ((Elf32_Addr (*) (void)) (*reloc_addr)) ();
+      *reloc_addr = value;
+    }
+  else
+    __libc_fatal ("unexpected reloc type in static binary");
+}
+
+#endif /* dl-irel.h */

Modified: fsf/trunk/ports/sysdeps/arm/dl-machine.h
==============================================================================
--- fsf/trunk/ports/sysdeps/arm/dl-machine.h (original)
+++ fsf/trunk/ports/sysdeps/arm/dl-machine.h Wed Apr 27 00:03:41 2011
@@ -374,6 +374,12 @@
       struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
       Elf32_Addr value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
 
+      if (sym != NULL
+	  && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC,
+			       0)
+	  && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1))
+	value = ((Elf32_Addr (*) (void)) value) ();
+
       switch (r_type)
 	{
 	case R_ARM_COPY:
@@ -487,7 +493,8 @@
 	     *reloc_addr = value;
 	  }
 	  break;
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
+#if !defined RTLD_BOOTSTRAP
+#if defined USE_TLS
 	case R_ARM_TLS_DTPMOD32:
 	  /* Get the information from the link map returned by the
 	     resolv function.  */
@@ -506,6 +513,12 @@
 	      CHECK_STATIC_TLS (map, sym_map);
 	      *reloc_addr += sym->st_value + sym_map->l_tls_offset;
 	    }
+	  break;
+#endif
+	case R_ARM_IRELATIVE:
+	  value = map->l_addr + *reloc_addr;
+	  value = ((Elf32_Addr (*) (void)) value) ();
+	  *reloc_addr = value;
 	  break;
 #endif
 	default:
@@ -536,6 +549,12 @@
 # endif
       struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
       Elf32_Addr value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
+
+      if (sym != NULL
+	  && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC,
+			       0)
+	  && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1))
+	value = ((Elf32_Addr (*) (void)) value) ();
 
       switch (r_type)
 	{
@@ -588,7 +607,8 @@
 	     *reloc_addr = value;
 	  }
 	  break;
-#if defined USE_TLS && !defined RTLD_BOOTSTRAP
+#if !defined RTLD_BOOTSTRAP
+#if defined USE_TLS
 	case R_ARM_TLS_DTPMOD32:
 	  /* Get the information from the link map returned by the
 	     resolv function.  */
@@ -607,6 +627,12 @@
 	      *reloc_addr = (sym->st_value + sym_map->l_tls_offset
 			     + reloc->r_addend);
 	    }
+	  break;
+#endif
+	case R_ARM_IRELATIVE:
+	  value = map->l_addr + *reloc_addr;
+	  value = ((Elf32_Addr (*) (void)) value) ();
+	  *reloc_addr = value;
 	  break;
 #endif
 	default:

Modified: fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S
==============================================================================
--- fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S (original)
+++ fsf/trunk/ports/sysdeps/unix/sysv/linux/arm/eabi/libc-do-syscall.S Wed Apr 27 00:03:41 2011
@@ -29,6 +29,9 @@
 	.syntax unified
 	.hidden __libc_do_syscall
 
+#undef CALL_MCOUNT
+#define CALL_MCOUNT
+
 ENTRY (__libc_do_syscall)
 	.fnstart
 	push	{r7, lr}