2.5-18.1

1 files changed, 127 insertions, 0 deletions

diff --git a/sysdeps/sparc/sparc64/sparcv9v/memset.S b/sysdeps/sparc/sparc64/sparcv9v/memset.S
new file mode 100644
index 0000000000..ac0a50cf8e
--- /dev/null
+++ b/sysdeps/sparc/sparc64/sparcv9v/memset.S
@@ -0,0 +1,127 @@
+/* Set a block of memory to some byte value.  For SUN4V Niagara.
+   Copyright (C) 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David S. Miller (davem@davemloft.net)
+
+   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>
+
+#define ASI_BLK_INIT_QUAD_LDD_P	0xe2
+#define ASI_P			0x80
+#define ASI_PNF			0x82
+
+#ifndef XCC
+#define USE_BPR
+#define XCC xcc
+#endif
+
+	.register	%g2,#scratch
+
+	.text
+	.align		32
+
+ENTRY(memset)
+	/* %o0=buf, %o1=pat, %o2=len */
+	and		%o1, 0xff, %o3
+	mov		%o2, %o1
+	sllx		%o3, 8, %g1
+	or		%g1, %o3, %o2
+	sllx		%o2, 16, %g1
+	or		%g1, %o2, %o2
+	sllx		%o2, 32, %g1
+	ba,pt		%XCC, 1f
+	 or		%g1, %o2, %o2
+END(memset)
+
+ENTRY(__bzero)
+	clr		%o2
+1:	brz,pn		%o1, 90f
+	 mov		%o0, %o3
+
+	wr		%g0, ASI_P, %asi
+
+	cmp		%o1, 15
+	bl,pn		%icc, 70f
+	 andcc		%o0, 0x7, %g1
+	be,pt		%XCC, 2f
+	 mov		8, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	stba		%o2, [%o0 + 0x00] %asi
+	subcc		%g1, 1, %g1
+	bne,pt		%XCC, 1b
+	 add		%o0, 1, %o0
+2:	cmp		%o1, 128
+	bl,pn		%icc, 60f
+	 andcc		%o0, (64 - 1), %g1
+	be,pt		%XCC, 40f
+	 mov		64, %g2
+	sub		%g2, %g1, %g1
+	sub		%o1, %g1, %o1
+1:	stxa		%o2, [%o0 + 0x00] %asi
+	subcc		%g1, 8, %g1
+	bne,pt		%XCC, 1b
+	 add		%o0, 8, %o0
+
+40:
+	wr		%g0, ASI_BLK_INIT_QUAD_LDD_P, %asi
+	andn		%o1, (64 - 1), %g1
+	sub		%o1, %g1, %o1
+50:
+	stxa		%o2, [%o0 + 0x00] %asi
+	stxa		%o2, [%o0 + 0x08] %asi
+	stxa		%o2, [%o0 + 0x10] %asi
+	stxa		%o2, [%o0 + 0x18] %asi
+	stxa		%o2, [%o0 + 0x20] %asi
+	stxa		%o2, [%o0 + 0x28] %asi
+	stxa		%o2, [%o0 + 0x30] %asi
+	stxa		%o2, [%o0 + 0x38] %asi
+	subcc		%g1, 64, %g1
+	bne,pt		%XCC, 50b
+	 add		%o0, 64, %o0
+
+	wr		%g0, ASI_P, %asi
+	brz,pn		%o1, 80f
+60:
+	 andncc		%o1, 0x7, %g1
+	be,pn		%XCC, 2f
+	 sub		%o1, %g1, %o1
+1:	stxa		%o2, [%o0 + 0x00] %asi
+	subcc		%g1, 8, %g1
+	bne,pt		%XCC, 1b
+	 add		%o0, 8, %o0
+2:	brz,pt		%o1, 80f
+	 nop
+
+70:
+1:	stba		%o2, [%o0 + 0x00] %asi
+	subcc		%o1, 1, %o1
+	bne,pt		%icc, 1b
+	 add		%o0, 1, %o0
+
+	/* fallthrough */
+
+80:
+	wr		%g0, ASI_PNF, %asi
+
+90:
+	retl
+	 mov		%o3, %o0
+END(__bzero)
+
+libc_hidden_builtin_def (memset)
+weak_alias (__bzero, bzero)