Merge glibc-ports into ports/ directory. glibc-2.16.90 glibc-2.16-ports-merge

8 files changed, 564 insertions, 0 deletions

diff --git a/ports/sysdeps/unix/alpha/Makefile b/ports/sysdeps/unix/alpha/Makefile
new file mode 100644
index 0000000000..441aa02a83
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/Makefile
@@ -0,0 +1,3 @@
+ifeq ($(subdir),rt)
+librt-sysdep_routines += rt-sysdep
+endif
diff --git a/ports/sysdeps/unix/alpha/getegid.S b/ports/sysdeps/unix/alpha/getegid.S
new file mode 100644
index 0000000000..a564f6c7a7
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/getegid.S
@@ -0,0 +1,26 @@
+/* Copyright (C) 1991-2012 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+
+PSEUDO (__getegid, getxgid, 0)
+	MOVE (r1, r0)
+	ret
+PSEUDO_END (__getegid)
+
+weak_alias (__getegid, getegid)
diff --git a/ports/sysdeps/unix/alpha/geteuid.S b/ports/sysdeps/unix/alpha/geteuid.S
new file mode 100644
index 0000000000..289acbd1e3
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/geteuid.S
@@ -0,0 +1,26 @@
+/* Copyright (C) 1991-2012 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+
+PSEUDO (__geteuid, getxuid, 0)
+	MOVE (r1, r0)
+	ret
+PSEUDO_END (__geteuid)
+
+weak_alias (__geteuid, geteuid)
diff --git a/ports/sysdeps/unix/alpha/getppid.S b/ports/sysdeps/unix/alpha/getppid.S
new file mode 100644
index 0000000000..8f7e7746de
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/getppid.S
@@ -0,0 +1,26 @@
+/* Copyright (C) 1991-2012 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+
+
+PSEUDO (__getppid, getxpid, 0)
+	MOVE (r1, r0)
+	ret
+PSEUDO_END (__getppid)
+
+weak_alias (__getppid, getppid)
diff --git a/ports/sysdeps/unix/alpha/pipe.S b/ports/sysdeps/unix/alpha/pipe.S
new file mode 100644
index 0000000000..b3b53a7687
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/pipe.S
@@ -0,0 +1,31 @@
+/* Copyright (C) 1993, 1995, 1997, 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Mosberger (davidm@cs.arizona.edu).
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* __pipe is a special syscall since it returns two values.  */
+
+#include <sysdep.h>
+
+PSEUDO (__pipe, pipe, 0)
+	stl	r0, 0(a0)
+	stl	r1, 4(a0)
+	mov	zero, v0
+	ret
+PSEUDO_END(__pipe)
+
+libc_hidden_def (__pipe)
+weak_alias (__pipe, pipe)
diff --git a/ports/sysdeps/unix/alpha/rt-sysdep.S b/ports/sysdeps/unix/alpha/rt-sysdep.S
new file mode 100644
index 0000000000..f966bf1e59
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/rt-sysdep.S
@@ -0,0 +1 @@
+#include <sysdep.S>
diff --git a/ports/sysdeps/unix/alpha/sysdep.S b/ports/sysdeps/unix/alpha/sysdep.S
new file mode 100644
index 0000000000..2e5e776268
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/sysdep.S
@@ -0,0 +1,66 @@
+/* Copyright (C) 1993, 1996, 1998, 2002, 2003, 2004, 2012
+   Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Brendan Kehoe (brendan@zen.org).
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdep.h>
+#include <features.h>
+
+#if defined(PIC)
+	/* Put this at the end of libc's text segment so that all of
+	   the direct branches from the syscalls are forward, and 
+	   thus predicted not taken.  */
+	.section .text.last, "ax", @progbits
+#else
+	.text
+#endif
+
+#ifndef NOT_IN_libc
+# define SYSCALL_ERROR_ERRNO __libc_errno
+#else
+# define SYSCALL_ERROR_ERRNO errno
+#endif
+
+	.align 4
+	.globl	__syscall_error
+	.ent	__syscall_error
+__syscall_error:
+	/* When building a shared library, we branch here without having
+	   loaded the GP.  Nor, since it was a direct branch, have we
+	   loaded PV with our address.
+
+	   When building a static library, we tail call here from another
+	   object file, possibly with a different GP, and must return with
+	   the GP of our caller in place so that linker relaxation works.
+
+	   Both issues are solved by computing the GP into T1 instead of
+	   clobbering the traditional GP register.  */
+	.prologue 0
+	mov	v0, t0
+	br	t1, 1f
+1:	ldah	t1, 0(t1) !gpdisp!1
+	call_pal PAL_rduniq
+
+	lda	t1, 0(t1) !gpdisp!1
+	ldq	t1, SYSCALL_ERROR_ERRNO(t1) !gottprel
+	addq	v0, t1, t1
+	lda	v0, -1
+
+	stl	t0, 0(t1)
+	ret
+
+	.end __syscall_error
diff --git a/ports/sysdeps/unix/alpha/sysdep.h b/ports/sysdeps/unix/alpha/sysdep.h
new file mode 100644
index 0000000000..4ee0746acc
--- /dev/null
+++ b/ports/sysdeps/unix/alpha/sysdep.h
@@ -0,0 +1,385 @@
+/* Copyright (C) 1992-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Brendan Kehoe (brendan@zen.org).
+
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sysdeps/unix/sysdep.h>
+
+#ifdef __ASSEMBLER__
+
+#ifdef __linux__
+# include <alpha/regdef.h>
+#else
+# include <regdef.h>
+#endif
+
+#ifdef IS_IN_rtld
+# include <dl-sysdep.h>         /* Defines RTLD_PRIVATE_ERRNO.  */
+#endif
+
+
+#define __LABEL(x)	x##:
+
+#define LEAF(name, framesize)			\
+  .globl name;					\
+  .align 4;					\
+  .ent name, 0;					\
+  __LABEL(name)					\
+  .frame sp, framesize, ra
+
+#define ENTRY(name)				\
+  .globl name;					\
+  .align 4;					\
+  .ent name, 0;					\
+  __LABEL(name)					\
+  .frame sp, 0, ra
+
+/* Mark the end of function SYM.  */
+#undef END
+#define END(sym)	.end sym
+
+#ifdef PROF
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	ldgp	gp,0(pv);			\
+	.set noat;				\
+	lda	AT,_mcount;			\
+	jsr	AT,(AT),_mcount;		\
+	.set at;				\
+	.prologue 1
+#elif defined PIC
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	.prologue 0
+#else
+# define PSEUDO_PROLOGUE			\
+	.frame sp, 0, ra;			\
+	ldgp	gp,0(pv);			\
+	.prologue 1
+#endif /* PROF */
+
+#ifdef PROF
+# define USEPV_PROF	std
+#else
+# define USEPV_PROF	no
+#endif
+
+#if RTLD_PRIVATE_ERRNO
+# define SYSCALL_ERROR_LABEL	$syscall_error
+# define SYSCALL_ERROR_HANDLER			\
+	stl	v0, rtld_errno(gp)	!gprel;	\
+	lda	v0, -1;				\
+	ret
+#elif defined(PIC)
+# define SYSCALL_ERROR_LABEL	__syscall_error !samegp
+# define SYSCALL_ERROR_HANDLER
+#else
+# define SYSCALL_ERROR_LABEL	$syscall_error
+# define SYSCALL_ERROR_HANDLER \
+	jmp	$31, __syscall_error
+#endif /* RTLD_PRIVATE_ERRNO */
+
+/* Overridden by specific syscalls.  */
+#undef PSEUDO_PREPARE_ARGS
+#define PSEUDO_PREPARE_ARGS	/* Nothing.  */
+
+#define PSEUDO(name, syscall_name, args)	\
+	.globl name;				\
+	.align 4;				\
+	.ent name,0;				\
+__LABEL(name)					\
+	PSEUDO_PROLOGUE;			\
+	PSEUDO_PREPARE_ARGS			\
+	lda	v0, SYS_ify(syscall_name);	\
+	call_pal PAL_callsys;			\
+	bne	a3, SYSCALL_ERROR_LABEL
+
+#undef PSEUDO_END
+#if defined(PIC) && !RTLD_PRIVATE_ERRNO
+# define PSEUDO_END(sym)  END(sym)
+#else
+# define PSEUDO_END(sym)			\
+$syscall_error:					\
+	SYSCALL_ERROR_HANDLER;			\
+	END(sym)
+#endif
+
+#define PSEUDO_NOERRNO(name, syscall_name, args)	\
+	.globl name;					\
+	.align 4;					\
+	.ent name,0;					\
+__LABEL(name)						\
+	PSEUDO_PROLOGUE;				\
+	PSEUDO_PREPARE_ARGS				\
+	lda	v0, SYS_ify(syscall_name);		\
+	call_pal PAL_callsys;
+
+#undef PSEUDO_END_NOERRNO
+#define PSEUDO_END_NOERRNO(sym)  END(sym)
+
+#define ret_NOERRNO ret
+
+#define PSEUDO_ERRVAL(name, syscall_name, args)	\
+	.globl name;					\
+	.align 4;					\
+	.ent name,0;					\
+__LABEL(name)						\
+	PSEUDO_PROLOGUE;				\
+	PSEUDO_PREPARE_ARGS				\
+	lda	v0, SYS_ify(syscall_name);		\
+	call_pal PAL_callsys;
+
+#undef PSEUDO_END_ERRVAL
+#define PSEUDO_END_ERRVAL(sym)  END(sym)
+
+#define ret_ERRVAL ret
+
+#define r0	v0
+#define r1	a4
+
+#define MOVE(x,y)	mov x,y
+
+#else /* !ASSEMBLER */
+
+/* ??? Linux needs to be able to override INLINE_SYSCALL for one
+   particular special case.  Make this easy.  */
+
+#undef INLINE_SYSCALL
+#define INLINE_SYSCALL(name, nr, args...) \
+	INLINE_SYSCALL1(name, nr, args)
+
+#define INLINE_SYSCALL1(name, nr, args...)	\
+({						\
+	long _sc_ret, _sc_err;			\
+	inline_syscall##nr(__NR_##name, args);	\
+	if (__builtin_expect (_sc_err, 0))	\
+	  {					\
+	    __set_errno (_sc_ret);		\
+	    _sc_ret = -1L;			\
+	  }					\
+	_sc_ret;				\
+})
+
+#define INTERNAL_SYSCALL(name, err_out, nr, args...) \
+	INTERNAL_SYSCALL1(name, err_out, nr, args)
+
+#define INTERNAL_SYSCALL1(name, err_out, nr, args...)	\
+	INTERNAL_SYSCALL_NCS(__NR_##name, err_out, nr, args)
+
+#define INTERNAL_SYSCALL_NCS(name, err_out, nr, args...) \
+({							\
+	long _sc_ret, _sc_err;				\
+	inline_syscall##nr(name, args);			\
+	err_out = _sc_err;				\
+	_sc_ret;					\
+})
+
+#define INTERNAL_SYSCALL_DECL(err) \
+	long int err __attribute__((unused))
+
+/* The normal Alpha calling convention sign-extends 32-bit quantties
+   no matter what the "real" sign of the 32-bit type.  We want to
+   preserve that when filling in values for the kernel.  */
+#define syscall_promote(arg) \
+  (sizeof(arg) == 4 ? (long)(int)(long)(arg) : (long)(arg))
+
+/* Make sure and "use" the variable that we're not returning,
+   in order to suppress unused variable warnings.  */
+#define INTERNAL_SYSCALL_ERROR_P(val, err)	((void)val, err)
+#define INTERNAL_SYSCALL_ERRNO(val, err)	((void)err, val)
+
+#define inline_syscall_clobbers				\
+	"$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",	\
+	"$22", "$23", "$24", "$25", "$27", "$28", "memory"
+
+/* It is moderately important optimization-wise to limit the lifetime
+   of the hard-register variables as much as possible.  Thus we copy
+   in/out as close to the asm as possible.  */
+
+#define inline_syscall0(name, args...)				\
+{								\
+	register long _sc_19 __asm__("$19");			\
+	register long _sc_0 = name;				\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2"				\
+	   : "+v"(_sc_0), "=r"(_sc_19)				\
+	   : : inline_syscall_clobbers,				\
+	     "$16", "$17", "$18", "$20", "$21");		\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall1(name,arg1)				\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3"				\
+	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16)		\
+	   : : inline_syscall_clobbers,				\
+	     "$17", "$18", "$20", "$21");			\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall2(name,arg1,arg2)				\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4"			\
+	   : "+v"(_sc_0), "=r"(_sc_19),				\
+	     "+r"(_sc_16), "+r"(_sc_17)				\
+	   : : inline_syscall_clobbers,				\
+	     "$18", "$20", "$21");				\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall3(name,arg1,arg2,arg3)			\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19");			\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5"			\
+	   : "+v"(_sc_0), "=r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18)				\
+	   : : inline_syscall_clobbers, "$20", "$21");		\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall4(name,arg1,arg2,arg3,arg4)		\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6"			\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18)				\
+	   : : inline_syscall_clobbers, "$20", "$21");		\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall5(name,arg1,arg2,arg3,arg4,arg5)		\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _tmp_20 = syscall_promote (arg5);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	register long _sc_20 __asm__("$20") = _tmp_20;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7"		\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20)		\
+	   : : inline_syscall_clobbers, "$21");			\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6)	\
+{								\
+	register long _tmp_16 = syscall_promote (arg1);		\
+	register long _tmp_17 = syscall_promote (arg2);		\
+	register long _tmp_18 = syscall_promote (arg3);		\
+	register long _tmp_19 = syscall_promote (arg4);		\
+	register long _tmp_20 = syscall_promote (arg5);		\
+	register long _tmp_21 = syscall_promote (arg6);		\
+	register long _sc_0 = name;				\
+	register long _sc_16 __asm__("$16") = _tmp_16;		\
+	register long _sc_17 __asm__("$17") = _tmp_17;		\
+	register long _sc_18 __asm__("$18") = _tmp_18;		\
+	register long _sc_19 __asm__("$19") = _tmp_19;		\
+	register long _sc_20 __asm__("$20") = _tmp_20;		\
+	register long _sc_21 __asm__("$21") = _tmp_21;		\
+	__asm__ __volatile__					\
+	  ("callsys # %0 %1 <= %2 %3 %4 %5 %6 %7 %8"		\
+	   : "+v"(_sc_0), "+r"(_sc_19), "+r"(_sc_16),		\
+	     "+r"(_sc_17), "+r"(_sc_18), "+r"(_sc_20),		\
+	     "+r"(_sc_21)					\
+	   : : inline_syscall_clobbers);			\
+	_sc_ret = _sc_0, _sc_err = _sc_19;			\
+}
+
+/* Pointer mangling support.  Note that tls access is slow enough that
+   we don't deoptimize things by placing the pointer check value there.  */
+
+#include <stdint.h>
+
+#if defined NOT_IN_libc && defined IS_IN_rtld
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(dst, src, tmp)				\
+	ldah	tmp, __pointer_chk_guard_local($29) !gprelhigh;	\
+	ldq	tmp, __pointer_chk_guard_local(tmp) !gprellow;	\
+	xor	src, tmp, dst
+#  define PTR_MANGLE2(dst, src, tmp)				\
+	xor	src, tmp, dst
+#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)
+#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)
+# else
+extern uintptr_t __pointer_chk_guard_local attribute_relro attribute_hidden;
+#  define PTR_MANGLE(var)	\
+  (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local)
+#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)
+# endif
+#elif defined PIC
+# ifdef __ASSEMBLER__
+#  define PTR_MANGLE(dst, src, tmp)		\
+	ldq	tmp, __pointer_chk_guard;	\
+	xor	src, tmp, dst
+#  define PTR_MANGLE2(dst, src, tmp)		\
+	xor	src, tmp, dst
+#  define PTR_DEMANGLE(dst, tmp)   PTR_MANGLE(dst, dst, tmp)
+#  define PTR_DEMANGLE2(dst, tmp)  PTR_MANGLE2(dst, dst, tmp)
+# else
+extern const uintptr_t __pointer_chk_guard attribute_relro;
+#  define PTR_MANGLE(var)	\
+	(var) = (__typeof(var)) ((uintptr_t) (var) ^ __pointer_chk_guard)
+#  define PTR_DEMANGLE(var)  PTR_MANGLE(var)
+# endif
+#else
+/* There exists generic C code that assumes that PTR_MANGLE is always
+   defined.  When generating code for the static libc, we don't have
+   __pointer_chk_guard defined.  Nor is there any place that would
+   initialize it if it were defined, so there's little point in doing
+   anything more than nothing.  */
+# ifndef __ASSEMBLER__
+#  define PTR_MANGLE(var)
+#  define PTR_DEMANGLE(var)
+# endif
+#endif
+
+#endif /* ASSEMBLER */