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authorUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
committerUlrich Drepper <drepper@redhat.com>2004-12-22 20:10:10 +0000
commita334319f6530564d22e775935d9c91663623a1b4 (patch)
treeb5877475619e4c938e98757d518bb1e9cbead751 /sysdeps/s390/s390-64
parent0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (diff)
downloadglibc-a334319f6530564d22e775935d9c91663623a1b4.tar.gz
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(CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.
Diffstat (limited to 'sysdeps/s390/s390-64')
-rw-r--r--sysdeps/s390/s390-64/Dist1
-rw-r--r--sysdeps/s390/s390-64/__longjmp.c41
-rw-r--r--sysdeps/s390/s390-64/backtrace.c5
-rw-r--r--sysdeps/s390/s390-64/bcopy.S14
-rw-r--r--sysdeps/s390/s390-64/bits/wordsize.h11
-rw-r--r--sysdeps/s390/s390-64/dl-machine.h137
-rw-r--r--sysdeps/s390/s390-64/dl-trampoline.S128
-rw-r--r--sysdeps/s390/s390-64/elf/setjmp.S17
-rw-r--r--sysdeps/s390/s390-64/elf/start.S6
-rw-r--r--sysdeps/s390/s390-64/s390x-mcount.S2
-rw-r--r--sysdeps/s390/s390-64/setjmp.S19
11 files changed, 155 insertions, 226 deletions
diff --git a/sysdeps/s390/s390-64/Dist b/sysdeps/s390/s390-64/Dist
new file mode 100644
index 0000000000..dbf7aa9661
--- /dev/null
+++ b/sysdeps/s390/s390-64/Dist
@@ -0,0 +1 @@
+s390x-mcount.S
diff --git a/sysdeps/s390/s390-64/__longjmp.c b/sysdeps/s390/s390-64/__longjmp.c
index 030fb5b515..80abd3849a 100644
--- a/sysdeps/s390/s390-64/__longjmp.c
+++ b/sysdeps/s390/s390-64/__longjmp.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2001 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
@@ -29,35 +29,18 @@
 void
 __longjmp (__jmp_buf env, int val)
 {
-  register long int r2 __asm ("%r2") = val == 0 ? 1 : val;
-#ifdef PTR_DEMANGLE
-  register uintptr_t r3 __asm ("%r3") = THREAD_GET_POINTER_GUARD ();
-  register void *r1 __asm ("%r1") = (void *) env;
-#endif
-  /* Restore registers and jump back.  */
-  asm volatile ("ld   %%f7,104(%1)\n\t"
-		"ld   %%f5,96(%1)\n\t"
-		"ld   %%f3,88(%1)\n\t"
-		"ld   %%f1,80(%1)\n\t"
-#ifdef PTR_DEMANGLE
-		"lmg  %%r6,%%r13,0(%1)\n\t"
-		"lmg  %%r4,%%r5,64(%1)\n\t"
-		"xgr  %%r4,%2\n\t"
-		"xgr  %%r5,%2\n\t"
-		"lgr  %%r15,%%r5\n\t"
-		"br   %%r4"
-#else
-		"lmg  %%r6,%%r15,0(%1)\n\t"
-		"br   %%r14"
-#endif
-		: : "r" (r2),
-#ifdef PTR_DEMANGLE
-		    "r" (r1), "r" (r3)
-#else
-		    "a" (env)
-#endif
-		);
+   /* Restore registers and jump back.  */
+   asm volatile ("lgr  %%r2,%0\n\t"        /* Put val in grp 2.  */
+		 "ld   %%f7,104(%1)\n\t"
+		 "ld   %%f5,96(%1)\n\t"
+		 "ld   %%f3,88(%1)\n\t"
+		 "ld   %%f1,80(%1)\n\t"
+                 "lmg  %%r6,%%r15,0(%1)\n\t"
+                 "br   %%r14"
+                 : : "r" (val == 0 ? 1 : val),
+                 "a" (env) : "2" );
 
   /* Avoid `volatile function does return' warnings.  */
   for (;;);
 }
+
diff --git a/sysdeps/s390/s390-64/backtrace.c b/sysdeps/s390/s390-64/backtrace.c
index 7ba195cb7a..05321349ca 100644
--- a/sysdeps/s390/s390-64/backtrace.c
+++ b/sysdeps/s390/s390-64/backtrace.c
@@ -1,6 +1,6 @@
 /* Return backtrace of current program state.  64 bit S/390 version.
-   Copyright (C) 2001, 2003, 2004, 2005 Free Software Foundation, Inc.
-   Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>.
+   Copyright (C) 2001, 2003, 2004 Free Software Foundation, Inc.
+   Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -141,4 +141,3 @@ __backtrace (void **array, int size)
 }
 
 weak_alias (__backtrace, backtrace)
-libc_hidden_def (__backtrace)
diff --git a/sysdeps/s390/s390-64/bcopy.S b/sysdeps/s390/s390-64/bcopy.S
index abcb1fb1b4..ff7966723b 100644
--- a/sysdeps/s390/s390-64/bcopy.S
+++ b/sysdeps/s390/s390-64/bcopy.S
@@ -1,6 +1,6 @@
 /* bcopy -- copy a block from source to destination.  64 bit S/390 version.
    This file is part of the GNU C Library.
-   Copyright (C) 2000, 2001, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2000, 2001 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -59,10 +59,14 @@ ENTRY(__bcopy)
 	jo	.L6
 	br	%r14
 .L7:				    # destructive overlay, can not use mvcle
-	lgr	%r1,%r2		    # bcopy is called with source,dest
-	lgr	%r2,%r3		    # memmove with dest,source! Oh, well...
-	lgr	%r3,%r1
-	jg	HIDDEN_BUILTIN_JUMPTARGET(memmove)
+	lgr    %r1,%r2		    # bcopy is called with source,dest
+	lgr    %r2,%r3		    # memmove with dest,source! Oh, well...
+	lgr    %r3,%r1
+#ifdef PIC
+	jg     memmove@PLT
+#else
+	jg     memmove
+#endif
 
 END(__bcopy)
 
diff --git a/sysdeps/s390/s390-64/bits/wordsize.h b/sysdeps/s390/s390-64/bits/wordsize.h
index b41661217f..4f50d8586c 100644
--- a/sysdeps/s390/s390-64/bits/wordsize.h
+++ b/sysdeps/s390/s390-64/bits/wordsize.h
@@ -5,14 +5,3 @@
 #else
 # define __WORDSIZE	32
 #endif
-
-#if !defined __NO_LONG_DOUBLE_MATH && !defined __LONG_DOUBLE_MATH_OPTIONAL
-
-/* Signal that we didn't used to have a `long double'. The changes all
-   the `long double' function variants to be redirects to the double
-   functions.  */
-# define __LONG_DOUBLE_MATH_OPTIONAL   1
-# ifndef __LONG_DOUBLE_128__
-#  define __NO_LONG_DOUBLE_MATH        1
-# endif
-#endif
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 */
diff --git a/sysdeps/s390/s390-64/dl-trampoline.S b/sysdeps/s390/s390-64/dl-trampoline.S
deleted file mode 100644
index 8093582163..0000000000
--- a/sysdeps/s390/s390-64/dl-trampoline.S
+++ /dev/null
@@ -1,128 +0,0 @@
-/* PLT trampolines.  s390 version.
-   Copyright (C) 2005 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.  */
-
-/* The PLT stubs will call _dl_runtime_resolve/_dl_runtime_profile
- * with the following linkage:
- *   r2 - r6 : parameter registers
- *   f0, f2, f4, f6 : floating point parameter registers
- *   24(r15), 28(r15) : PLT arguments PLT1, PLT2
- *   96(r15) : additional stack parameters
- * The normal clobber rules for function calls apply:
- *   r0 - r5 : call clobbered
- *   r6 - r13 :	 call saved
- *   r14 : return address (call clobbered)
- *   r15 : stack pointer (call saved)
- *   f1, f3, f5, f7 : call saved
- *   f0 - f3, f5, f7 - f15 : call clobbered
- */
-
-#include <sysdep.h>
-
-	.text
-	.globl _dl_runtime_resolve
-	.type _dl_runtime_resolve, @function
-	cfi_startproc
-	.align 16
-_dl_runtime_resolve:
-	stmg   2,5,64(15)	# save registers
-	stg    14,96(15)
-	lgr    0,15		# create stack frame
-	aghi   15,-160
-	cfi_adjust_cfa_offset (160)
-	stg    0,0(15)
-	lmg    2,3,208(15)	# load args saved by PLT
-	brasl  14,_dl_fixup	# call fixup
-	lgr    1,2		# function addr returned in r2
-	aghi   15,160		# remove stack frame
-	cfi_adjust_cfa_offset (-160)
-	lg     14,96(15)	# restore registers
-	lmg    2,5,64(15)
-	br     1
-	cfi_endproc
-	.size _dl_runtime_resolve, .-_dl_runtime_resolve
-
-
-#ifndef PROF
-	.globl _dl_runtime_profile
-	.type _dl_runtime_profile, @function
-	cfi_startproc
-	.align 16
-_dl_runtime_profile:
-	stmg   %r2,%r6,64(%r15)		# save registers
-	std    %f0,104(%r15)
-	std    %f2,112(%r15)
-	std    %f4,120(%r15)
-	std    %f6,128(%r15)
-	stg    %r6,16(%r15)
-	stg    %r12,24(%r15)
-	stg    %r14,32(%r15)
-	lgr    %r12,%r15		# create stack frame
-	cfi_def_cfa_register (12)
-	aghi   %r15,-160
-	stg    %r12,0(%r15)
-	lmg    %r2,%r3,48(%r12)		# load arguments saved by PLT
-	lgr    %r4,%r14			# return address as third parameter
-	la     %r5,64(%r12)		# pointer to struct La_s390_32_regs
-	la     %r6,40(%r12)		# long int * framesize
-	brasl  %r14,_dl_profile_fixup	# call resolver
-	lgr    %r1,%r2			# function addr returned in r2
-	lg     %r0,40(%r12)		# load framesize
-	ltgr   %r0,%r0
-	jnm    1f
-	lmg    %r2,%r6,64(%r12)
-	ld     %f0,104(%r12)
-	ld     %f2,112(%r12)
-	ld     %f4,120(%r12)
-	ld     %f6,128(%r12)
-	basr   %r14,%r1			# call resolved function
-0:	lr     %r15,%r12		# remove stack frame
-	cfi_def_cfa_register (15)
-	lg     %r14,32(%r15)		# restore registers
-	lg     %r12,24(%r15)
-	lg     %r6,16(%r15)
-	br     %r14
-	cfi_def_cfa_register (12)
-1:	jz     4f			# framesize == 0 ?
-	aghi   %r0,7			# align framesize to 8
-	nill   %r0,0xfff8
-	slgr   %r15,%r0			# make room for framesize bytes
-	stg    %r12,0(%r15)
-	la     %r2,160(%r15)
-	la     %r3,160(%r12)
-	srlg   %r0,%r0,3
-3:	mvc    0(8,%r2),0(%r3)		# copy additional parameters
-	la     %r2,8(%r2)
-	la     %r3,8(%r3)
-	brctg  %r0,3b
-4:	lmg    %r2,%r6,64(%r12)		# load register parameters
-	ld     %f0,104(%r12)
-	ld     %f2,112(%r12)
-	ld     %f4,120(%r12)
-	ld     %f6,128(%r12)
-	basr   %r14,%r1			# call resolved function
-	stg    %r2,136(%r12)
-	std    %f0,144(%r12)
-	lmg    %r2,%r3,48(%r12)		# load arguments saved by PLT
-	la     %r4,32(%r12)		# pointer to struct La_s390_32_regs
-	la     %r5,72(%r12)		# pointer to struct La_s390_32_retval
-	brasl  %r14,_dl_call_pltexit
-	j      0b
-	cfi_endproc
-	.size _dl_runtime_profile, .-_dl_runtime_profile
-#endif
diff --git a/sysdeps/s390/s390-64/elf/setjmp.S b/sysdeps/s390/s390-64/elf/setjmp.S
index 28b6a5a35b..fa3ac72480 100644
--- a/sysdeps/s390/s390-64/elf/setjmp.S
+++ b/sysdeps/s390/s390-64/elf/setjmp.S
@@ -1,5 +1,5 @@
 /* setjmp for 64 bit S/390, ELF version.
-   Copyright (C) 2001, 2002, 2005 Free Software Foundation, Inc.
+   Copyright (C) 2001, 2002 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
@@ -46,25 +46,12 @@ END (setjmp)
 
 ENTRY(__sigsetjmp)
 .Linternal_sigsetjmp:
-#ifdef PTR_MANGLE
-	stmg   %r6,%r13,0(%r2)      /* Store registers in jmp_buf.  */
-	lgr    %r4,%r14
-	lgr    %r5,%r15
-	PTR_MANGLE (%r4, %r1)
-	PTR_MANGLE2 (%r5, %r1)
-	stmg   %r4,%r5,64(%r2)
-#else
         stmg   %r6,%r15,0(%r2)      /* Store registers in jmp_buf.  */
-#endif
 	std    %f1,80(%r2)
 	std    %f3,88(%r2)
 	std    %f5,96(%r2)
 	std    %f7,104(%r2)
-#if defined NOT_IN_libc && defined IS_IN_rtld
-	/* In ld.so we never save the signal mask.  */
-	lghi   %r2,0
-	br     %r14
-#elif defined PIC
+#ifdef PIC
         jg     __sigjmp_save@PLT    /* Branch to PLT of __sigsetjmp.  */
 #else
 	jg     __sigjmp_save
diff --git a/sysdeps/s390/s390-64/elf/start.S b/sysdeps/s390/s390-64/elf/start.S
index c4cb34d02c..e5013d0057 100644
--- a/sysdeps/s390/s390-64/elf/start.S
+++ b/sysdeps/s390/s390-64/elf/start.S
@@ -1,5 +1,5 @@
 /* Startup code compliant to the 64 bit S/390 ELF ABI.
-   Copyright (C) 2001, 2002, 2003, 2004, 2006 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.
 
@@ -78,14 +78,12 @@ _start:
 	la	%r7,160(%r15)
 	larl	%r6,__libc_csu_fini	# load pointer to __libc_csu_fini
 	larl	%r5,__libc_csu_init	# load pointer to __libc_csu_init
+	larl	%r2,main		# load pointer to main
 
 	/* Ok, now branch to the libc main routine.  */
 #ifdef PIC
-	larl	%r2,main@GOTENT		# load pointer to main
-	lg	%r2,0(%r2)
 	brasl	%r14,__libc_start_main@plt
 #else
-	larl	%r2,main		# load pointer to main
 	brasl	%r14,__libc_start_main
 #endif
 
diff --git a/sysdeps/s390/s390-64/s390x-mcount.S b/sysdeps/s390/s390-64/s390x-mcount.S
index 0fa614cbf4..5e3890b4f6 100644
--- a/sysdeps/s390/s390-64/s390x-mcount.S
+++ b/sysdeps/s390/s390-64/s390x-mcount.S
@@ -69,4 +69,4 @@ C_LABEL(_mcount)
 	ASM_SIZE_DIRECTIVE(C_SYMBOL_NAME(_mcount))
 
 #undef mcount
-weak_alias (_mcount, mcount)
+weak_alias(_mcount, mcount)
diff --git a/sysdeps/s390/s390-64/setjmp.S b/sysdeps/s390/s390-64/setjmp.S
index a962db46ce..7f245c2a1d 100644
--- a/sysdeps/s390/s390-64/setjmp.S
+++ b/sysdeps/s390/s390-64/setjmp.S
@@ -1,4 +1,4 @@
-/* Copyright (C) 2001, 2005 Free Software Foundation, Inc.
+/* Copyright (C) 2001 Free Software Foundation, Inc.
    Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
    This file is part of the GNU C Library.
 
@@ -28,27 +28,16 @@
 /* R2 = pointer to jmp_buf, R3 = savemask.  */
 
 ENTRY(__sigsetjmp)
-#ifdef PTR_MANGLE
-	stmg   %r6,%r13,0(%r2)      /* Store registers in jmp_buf.  */
-	lgr    %r4,%r14
-	lgr    %r5,%r15
-	PTR_MANGLE (%r4, %r1)
-	PTR_MANGLE2 (%r5, %r1)
-	stmg   %r4,%r5,64(%r2)
-#else
         stmg   %r6,%r15,0(%r2)      /* Store registers in jmp_buf.  */
-#endif
 	std    %f1,80(%r2)
 	std    %f3,88(%r2)
 	std    %f5,96(%r2)
 	std    %f7,104(%r2)
-#if defined NOT_IN_libc && defined IS_IN_rtld
-	/* In ld.so we never save the signal mask.  */
-	lghi   %r2,0
-	br     %r14
-#elif defined PIC
+#ifdef PIC
         jg     __sigjmp_save@PLT    /* Tail-call __sigjmp_save.  */
 #else
         jg     __sigjmp_save        /* Tail-call __sigjmp_save.  */
 #endif
 END (__sigsetjmp)
+
+