sysdeps/sparc/sparc64/multiarch/memset.S

/* Multiple versions of memset and bzero
   Copyright (C) 2010 Free Software Foundation, Inc.
   Contributed by David S. Miller (davem@davemloft.net)
   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.  */

#include <sysdep.h>
#include <rtld-global-offsets.h>

#if !defined NOT_IN_libc
	.text
ENTRY(memset)
	.type	memset, @gnu_indirect_function
# ifdef SHARED
	mov	%o7, %o5
	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o3
	call	1f
	 or	%o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
1:	add	%o7, %o3, %o3
	mov	%o5, %o7
	sethi	%hi(_rtld_global_ro), %o2
	or	%o2, %lo(_rtld_global_ro), %o2
#  ifdef __arch64__
	ldx	[%o3 + %o2], %o2
	ldx	[%o2 + RTLD_GLOBAL_RO_DL_HWCAP_OFFSET], %o2
#  else
	ld	[%o3 + %o2], %o2
	ld	[%o2 + RTLD_GLOBAL_RO_DL_HWCAP_OFFSET + 4], %o2
#  endif
# else
	set	_dl_hwcap, %o3
#  ifdef __arch64__
	ldx	[%o3], %o2
#  else
	ld	[%o3 + 4], %o2
#  endif
# endif
	andcc	%o2, 0x40, %g0	! HWCAP_SPARC_BLKINIT
	be	9f
	 nop
# ifdef SHARED
	sethi	%gdop_hix22(__memset_niagara1), %o1
	xor	%o1, %gdop_lox10(__memset_niagara1), %o1
# else
	set	__memset_niagara1, %o1
# endif
	ba	10f
	 nop
9:
# ifdef SHARED
	sethi	%gdop_hix22(__memset_ultra1), %o1
	xor	%o1, %gdop_lox10(__memset_ultra1), %o1
# else
	set	__memset_ultra1, %o1
# endif
10:
# ifdef SHARED
	add	%o3, %o1, %o1
# endif
	retl
	 mov	%o1, %o0
END(memset)

ENTRY(__bzero)
	.type	bzero, @gnu_indirect_function
# ifdef SHARED
	mov	%o7, %o5
	sethi	%hi(_GLOBAL_OFFSET_TABLE_-4), %o3
	call	1f
	 or	%o3, %lo(_GLOBAL_OFFSET_TABLE_+4), %o3
1:	add	%o7, %o3, %o3
	mov	%o5, %o7
	sethi	%hi(_rtld_global_ro), %o2
	or	%o2, %lo(_rtld_global_ro), %o2
#  ifdef __arch64__
	ldx	[%o3 + %o2], %o2
	ldx	[%o2 + RTLD_GLOBAL_RO_DL_HWCAP_OFFSET], %o2
#  else
	ld	[%o3 + %o2], %o2
	ld	[%o2 + RTLD_GLOBAL_RO_DL_HWCAP_OFFSET + 4], %o2
#  endif
# else
	set	_dl_hwcap, %o3
#  ifdef __arch64__
	ldx	[%o3], %o2
#  else
	ld	[%o3 + 4], %o2
#  endif
# endif
	andcc	%o2, 0x40, %g0	! HWCAP_SPARC_BLKINIT
	be	9f
	 nop
# ifdef SHARED
	sethi	%gdop_hix22(__bzero_niagara1), %o1
	xor	%o1, %gdop_lox10(__bzero_niagara1), %o1
# else
	set	__bzero_niagara1, %o1
# endif
	ba	10f
	 nop
9:
# ifdef SHARED
	sethi	%gdop_hix22(__memset_ultra1), %o1
	xor	%o1, %gdop_lox10(__memset_ultra1), %o1
# else
	set	__bzero_ultra1, %o1
# endif
10:
# ifdef SHARED
	add	%o3, %o1, %o1
# endif
	retl
	 mov	%o1, %o0
END(__bzero)

weak_alias (__bzero, bzero)

# undef weak_alias
# define weak_alias(a, b)

# undef libc_hidden_builtin_def
/* IFUNC doesn't work with the hidden functions in a shared library.  */
# define libc_hidden_builtin_def(name) \
	.globl __GI_memset; __GI_memset = __memset_ultra1

#define memset __memset_ultra1
#define __bzero __bzero_ultra1

#endif

#include "../memset.S"