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-rw-r--r--sysdeps/sparc/sparc64/sparcv9v/memset.S127
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)