(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

1 files changed, 122 insertions, 15 deletions

diff --git a/sysdeps/s390/s390-64/dl-machine.h b/sysdeps/s390/s390-64/dl-machine.h
index 5026a2edad..82ece0be0f 100644
--- a/sysdeps/s390/s390-64/dl-machine.h
+++ b/sysdeps/s390/s390-64/dl-machine.h
@@ -1,6 +1,6 @@
 /* Machine-dependent ELF dynamic relocation inline functions.
    64 bit S/390 Version.
-   Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
@@ -105,8 +105,7 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
 	{
 	  got[2] = (Elf64_Addr) &_dl_runtime_profile;
 
-	  if (GLRO(dl_profile) != NULL
-	      && _dl_name_match_p (GLRO(dl_profile), l))
+	  if (_dl_name_match_p (GLRO(dl_profile), l))
 	    /* This is the object we are looking for.  Say that we really
 	       want profiling and the timers are started.  */
 	    GL(dl_profile_map) = l;
@@ -120,6 +119,112 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
   return lazy;
 }
 
+/* This code is used in dl-runtime.c to call the `fixup' function
+   and then redirect to the address it returns.	 */
+
+/* s390:
+   Arguments are in register.
+   r2 - r7 holds the original parameters for the function call, fixup
+   and trampoline code use r0-r5 and r14-15. For the correct function
+   call r2-r5 and r14-15 must be restored.
+   Arguments from the PLT are stored at 48(r15) and 56(r15)
+   and must be moved to r2 and r3 for the fixup call (see elf32-s390.c
+   in the binutils for the PLT code).
+   Fixup function address in r2.
+*/
+#ifndef PROF
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+  asm ( "\
+    .text\n\
+    .globl _dl_runtime_resolve\n\
+    .type _dl_runtime_resolve, @function\n\
+    .align 16\n\
+    " CFI_STARTPROC "\n\
+_dl_runtime_resolve:\n\
+    # save registers\n\
+    stmg   2,5,64(15)\n\
+    stg	   14,96(15)\n\
+    lgr	   0,15\n\
+    aghi   15,-160\n\
+    " CFI_ADJUST_CFA_OFFSET(160)"\n\
+    stg	   0,0(15)\n\
+    # load args saved by PLT\n\
+    lmg	   2,3,208(15)\n\
+    brasl  14,fixup	# call fixup\n\
+    lgr	   1,2		# function addr returned in r2\n\
+    # restore registers\n\
+    aghi   15,160\n\
+    " CFI_ADJUST_CFA_OFFSET(-160)" \n\
+    lg	   14,96(15)\n\
+    lmg	   2,5,64(15)\n\
+    br	   1\n\
+    " CFI_ENDPROC "\n\
+    .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+\n\
+    .globl _dl_runtime_profile\n\
+    .type _dl_runtime_profile, @function\n\
+    .align 16\n\
+    " CFI_STARTPROC "\n\
+_dl_runtime_profile:\n\
+    # save registers\n\
+    stmg   2,5,64(15)\n\
+    stg	   14,96(15)\n\
+    lgr	   0,15\n\
+    aghi   15,-160\n\
+    " CFI_ADJUST_CFA_OFFSET(160)"\n\
+    stg	   0,0(15)\n\
+    # load args saved by PLT\n\
+    lmg	   2,3,208(15)\n\
+    # load return address as third parameter\n\
+    lgr	   4,14\n\
+    brasl  14,profile_fixup  # call fixup\n\
+    lgr	   1,2		# function addr returned in r2\n\
+    # restore registers\n\
+    aghi   15,160\n\
+    " CFI_ADJUST_CFA_OFFSET(-160)" \n\
+    lg	   14,96(15)\n\
+    lmg	   2,5,64(15)\n\
+    br	   1\n\
+    " CFI_ENDPROC "\n\
+    .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+");
+#else
+#define ELF_MACHINE_RUNTIME_TRAMPOLINE \
+  asm ( "\
+    .text\n\
+    .globl _dl_runtime_resolve\n\
+    .globl _dl_runtime_profile\n\
+    .type _dl_runtime_resolve, @function\n\
+    .type _dl_runtime_profile, @function\n\
+    .align 16\n\
+    " CFI_STARTPROC "\n\
+_dl_runtime_resolve:\n\
+_dl_runtime_profile:\n\
+    # save registers\n\
+    stmg   2,5,64(15)\n\
+    stg	   14,96(15)\n\
+    lgr	   0,15\n\
+    aghi   15,-160\n\
+    " CFI_ADJUST_CFA_OFFSET(160)"\n\
+    stg	   0,0(15)\n\
+    # load args saved by PLT\n\
+    lmg	   2,3,208(15)\n\
+    # load return address as third parameter\n\
+    lgr	   4,14\n\
+    brasl  14,profile_fixup	 # call fixup\n\
+    lgr	   1,2		# function addr returned in r2\n\
+    # restore registers\n\
+    aghi   15,160\n\
+    " CFI_ADJUST_CFA_OFFSET(-160)" \n\
+    lg	   14,96(15)\n\
+    lmg	   2,5,64(15)\n\
+    br	   1\n\
+    " CFI_ENDPROC "\n\
+    .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
+    .size _dl_runtime_profile, .-_dl_runtime_profile\n\
+");
+#endif
+
 /* Initial entry point code for the dynamic linker.
    The C function `_dl_start' is the real entry point;
    its return value is the user program's entry point.	*/
@@ -238,19 +343,14 @@ elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
   return value;
 }
 
-/* Names of the architecture-specific auditing callback functions.  */
-#define ARCH_LA_PLTENTER s390_64_gnu_pltenter
-#define ARCH_LA_PLTEXIT s390_64_gnu_pltexit
-
 #endif /* !dl_machine_h */
 
-#ifdef RESOLVE_MAP
+#ifdef RESOLVE
 
 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
    MAP is the object containing the reloc.  */
 
-auto inline void
-__attribute__ ((always_inline))
+static inline void
 elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 		  const Elf64_Sym *sym, const struct r_found_version *version,
 		  void *const reloc_addr_arg)
@@ -284,8 +384,17 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
 #ifndef RESOLVE_CONFLICT_FIND_MAP
       const Elf64_Sym *const refsym = sym;
 #endif
+#if defined USE_TLS && !defined RTLD_BOOTSTRAP
       struct link_map *sym_map = RESOLVE_MAP (&sym, version, r_type);
       Elf64_Addr value = sym == NULL ? 0 : sym_map->l_addr + sym->st_value;
+#else
+      Elf64_Addr value = RESOLVE (&sym, version, r_type);
+
+# ifndef RTLD_BOOTSTRAP
+      if (sym)
+# endif
+	value += sym->st_value;
+#endif /* use TLS and !RTLD_BOOTSTRAP */
 
       switch (r_type)
 	{
@@ -409,8 +518,7 @@ elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
     }
 }
 
-auto inline void
-__attribute__ ((always_inline))
+static inline void
 elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
 			   void *const reloc_addr_arg)
 {
@@ -418,8 +526,7 @@ elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
   *reloc_addr = l_addr + reloc->r_addend;
 }
 
-auto inline void
-__attribute__ ((always_inline))
+static inline void
 elf_machine_lazy_rel (struct link_map *map,
 		      Elf64_Addr l_addr, const Elf64_Rela *reloc)
 {
@@ -439,4 +546,4 @@ elf_machine_lazy_rel (struct link_map *map,
     _dl_reloc_bad_type (map, r_type, 1);
 }
 
-#endif /* RESOLVE_MAP */
+#endif /* RESOLVE */