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Diffstat (limited to 'libc/string/sparc/sparc64/strchr.S')
-rw-r--r--libc/string/sparc/sparc64/strchr.S480
1 files changed, 480 insertions, 0 deletions
diff --git a/libc/string/sparc/sparc64/strchr.S b/libc/string/sparc/sparc64/strchr.S
new file mode 100644
index 000000000..784b7fe4d
--- /dev/null
+++ b/libc/string/sparc/sparc64/strchr.S
@@ -0,0 +1,480 @@
+/* strchr (str, ch) -- Return pointer to first occurrence of CH in STR.
+ For SPARC v9.
+ Copyright (C) 1998, 1999, 2003 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Jan Vondrak <jvon4518@ss1000.ms.mff.cuni.cz> and
+ Jakub Jelinek <jj@ultra.linux.cz>.
+
+ 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 <asm/asi.h>
+#ifndef XCC
+#define XCC xcc
+#define USE_BPR
+ .register %g2, #scratch
+ .register %g3, #scratch
+ .register %g6, #scratch
+#endif
+
+ /* Normally, this uses
+ ((xword - 0x0101010101010101) & 0x8080808080808080) test
+ to find out if any byte in xword could be zero. This is fast, but
+ also gives false alarm for any byte in range 0x81-0xff. It does
+ not matter for correctness, as if this test tells us there could
+ be some zero byte, we check it byte by byte, but if bytes with
+ high bits set are common in the strings, then this will give poor
+ performance. You can #define EIGHTBIT_NOT_RARE and the algorithm
+ will use one tick slower, but more precise test
+ ((xword - 0x0101010101010101) & (~xword) & 0x8080808080808080),
+ which does not give any false alarms (but if some bits are set,
+ one cannot assume from it which bytes are zero and which are not).
+ It is yet to be measured, what is the correct default for glibc
+ in these days for an average user.
+ */
+
+ .text
+ .align 32
+ENTRY(strchr)
+ andcc %o1, 0xff, %o1 /* IEU1 Group */
+ be,pn %icc, 17f /* CTI */
+ sllx %o1, 8, %g3 /* IEU0 Group */
+ sethi %hi(0x01010101), %g1 /* IEU1 */
+
+ or %g3, %o1, %g3 /* IEU0 Group */
+ ldub [%o0], %o3 /* Load */
+ sllx %g3, 16, %g5 /* IEU0 Group */
+ or %g1, %lo(0x01010101), %g1 /* IEU1 */
+
+ sllx %g1, 32, %g2 /* IEU0 Group */
+ brz,pn %o3, 5f /* CTI+IEU1 */
+ orcc %g3, %g5, %g3 /* IEU1 Group */
+ sllx %g3, 32, %g5 /* IEU0 */
+
+ cmp %o3, %o1 /* IEU1 Group */
+ be,pn %xcc, 14f /* CTI */
+ or %g1, %g2, %g1 /* IEU0 */
+ andcc %o0, 7, %g0 /* IEU1 Group */
+
+ bne,a,pn %icc, 15f /* CTI */
+ add %o0, 1, %o0 /* IEU0 */
+ ldx [%o0], %o3 /* Load Group */
+1: sllx %g1, 7, %g2 /* IEU0 */
+
+ or %g3, %g5, %g3 /* IEU1 */
+ add %o0, 8, %o0 /* IEU0 Group */
+ xor %o3, %g3, %o4 /* IEU1 */
+ /* %g1 = 0101010101010101 *
+ * %g2 = 8080088080808080 *
+ * %g3 = c c c c c c c c *
+ * %o3 = value *
+ * %o4 = value XOR c */
+2: sub %o3, %g1, %o2 /* IEU0 Group */
+
+ sub %o4, %g1, %o5 /* IEU1 */
+#ifdef EIGHTBIT_NOT_RARE
+ andn %o2, %o3, %g6 /* IEU0 Group */
+ andn %o5, %o4, %o5 /* IEU1 */
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+ or %o5, %g6, %o5 /* IEU0 Group */
+#else
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+ or %o5, %o2, %o5 /* IEU0 Group */
+#endif
+ add %o0, 8, %o0 /* IEU1 */
+
+ andcc %o5, %g2, %g0 /* IEU1 Group */
+ be,a,pt %xcc, 2b /* CTI */
+ xor %o3, %g3, %o4 /* IEU0 */
+ srlx %o5, 32, %g5 /* IEU0 Group */
+
+ add %o2, %g1, %o2 /* IEU1 */
+3: andcc %g5, %g2, %g0 /* IEU1 Group */
+ be,pn %xcc, 4f /* CTI */
+ srlx %o2, 56, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+ srlx %o4, 56, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 6f /* CTI */
+ srlx %o2, 48, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+
+ srlx %o4, 48, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 7f /* CTI */
+ srlx %o2, 40, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+ srlx %o4, 40, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 8f /* CTI */
+ srlx %o2, 32, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+
+ srlx %o4, 32, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 9f /* CTI */
+4: srlx %o2, 24, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+ srlx %o4, 24, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 10f /* CTI */
+ srlx %o2, 16, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+
+ srlx %o4, 16, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 11f /* CTI */
+ srlx %o2, 8, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+ srlx %o4, 8, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 12f /* CTI */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5f /* CTI */
+ sub %o3, %g1, %o2 /* IEU0 */
+
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 13f /* CTI */
+ xor %o3, %g3, %o4 /* IEU0 */
+ ldxa [%o0] ASI_PNF, %o3 /* Load Group */
+
+ sub %o4, %g1, %o5 /* IEU0 */
+ or %o5, %o2, %o5 /* IEU1 */
+ add %o0, 8, %o0 /* IEU0 Group */
+ andcc %o5, %g2, %g0 /* IEU1 */
+
+ be,a,pt %xcc, 2b /* CTI */
+ xor %o3, %g3, %o4 /* IEU0 Group */
+ srlx %o5, 32, %g5 /* IEU0 Group */
+ ba,pt %xcc, 3b /* CTI */
+
+ add %o2, %g1, %o2 /* IEU1 */
+
+ .align 16
+5: retl /* CTI+IEU1 Group */
+ clr %o0 /* IEU0 */
+6: retl /* CTI+IEU1 Group */
+ add %o0, -16, %o0 /* IEU0 */
+
+7: retl /* CTI+IEU1 Group */
+ add %o0, -15, %o0 /* IEU0 */
+8: retl /* CTI+IEU1 Group */
+ add %o0, -14, %o0 /* IEU0 */
+
+9: retl /* CTI+IEU1 Group */
+ add %o0, -13, %o0 /* IEU0 */
+10: retl /* CTI+IEU1 Group */
+ add %o0, -12, %o0 /* IEU0 */
+
+11: retl /* CTI+IEU1 Group */
+ add %o0, -11, %o0 /* IEU0 */
+12: retl /* CTI+IEU1 Group */
+ add %o0, -10, %o0 /* IEU0 */
+
+13: retl /* CTI+IEU1 Group */
+ add %o0, -9, %o0 /* IEU0 */
+14: retl /* CTI+IEU1 Group */
+ nop /* IEU0 */
+
+ .align 16
+15: ldub [%o0], %o3 /* Load Group */
+16: andcc %o0, 7, %g0 /* IEU1 */
+ be,a,pn %icc, 1b /* CTI */
+ ldx [%o0], %o3 /* Load Group */
+
+ andcc %o3, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 5b /* CTI */
+ add %o0, 1, %o0 /* IEU0 */
+ cmp %o3, %o1 /* IEU1 Group */
+
+ bne,a,pn %icc, 16b /* CTI */
+ ldub [%o0], %o3 /* Load */
+ retl /* CTI+IEU1 Group */
+ add %o0, -1, %o0 /* IEU0 */
+
+ /* strchr (str, 0) */
+ .align 32
+ nop
+ .align 16
+17: sethi %hi(0x01010101), %g1 /* IEU0 Group */
+ ldub [%o0], %o3 /* Load */
+ or %g1, %lo(0x01010101), %g1 /* IEU0 Group */
+ sllx %g1, 32, %g2 /* IEU0 Group */
+
+ andcc %o0, 7, %g0 /* IEU1 */
+ or %g1, %g2, %g1 /* IEU0 Group */
+ bne,pn %icc, 32f /* CTI */
+ sllx %g1, 7, %g2 /* IEU0 Group */
+
+ brz,pn %o3, 30f /* CTI+IEU1 */
+ ldx [%o0], %o3 /* Load */
+18: add %o0, 8, %o0 /* IEU0 Group */
+19: sub %o3, %g1, %o2 /* IEU0 Group */
+
+#ifdef EIGHTBIT_NOT_RARE
+ andn %o2, %o3, %g6 /* IEU0 Group */
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+ andcc %g6, %g2, %g0 /* IEU1 Group */
+#else
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+ andcc %o2, %g2, %g0 /* IEU1 Group */
+#endif
+ be,pt %xcc, 19b /* CTI */
+ add %o0, 8, %o0 /* IEU0 */
+
+ addcc %o2, %g1, %g3 /* IEU1 Group */
+ srlx %o2, 32, %o2 /* IEU0 */
+20: andcc %o2, %g2, %g0 /* IEU1 Group */
+ be,pn %xcc, 21f /* CTI */
+
+ srlx %g3, 56, %o2 /* IEU0 */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 29f /* CTI */
+ srlx %g3, 48, %o2 /* IEU0 */
+
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 28f /* CTI */
+ srlx %g3, 40, %o2 /* IEU0 */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 27f /* CTI */
+ srlx %g3, 32, %o2 /* IEU0 */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 26f /* CTI */
+
+21: srlx %g3, 24, %o2 /* IEU0 */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 25f /* CTI */
+ srlx %g3, 16, %o2 /* IEU0 */
+
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 24f /* CTI */
+ srlx %g3, 8, %o2 /* IEU0 */
+ andcc %o2, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 23f /* CTI */
+ sub %o3, %g1, %o2 /* IEU0 */
+ andcc %g3, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 22f /* CTI */
+
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+ andcc %o2, %g2, %g0 /* IEU1 Group */
+ be,pt %xcc, 19b /* CTI */
+ add %o0, 8, %o0 /* IEU0 */
+
+ addcc %o2, %g1, %g3 /* IEU1 Group */
+ ba,pt %xcc, 20b /* CTI */
+ srlx %o2, 32, %o2 /* IEU0 */
+
+ .align 16
+22: retl /* CTI+IEU1 Group */
+ add %o0, -9, %o0 /* IEU0 */
+23: retl /* CTI+IEU1 Group */
+ add %o0, -10, %o0 /* IEU0 */
+
+24: retl /* CTI+IEU1 Group */
+ add %o0, -11, %o0 /* IEU0 */
+25: retl /* CTI+IEU1 Group */
+ add %o0, -12, %o0 /* IEU0 */
+
+26: retl /* CTI+IEU1 Group */
+ add %o0, -13, %o0 /* IEU0 */
+27: retl /* CTI+IEU1 Group */
+ add %o0, -14, %o0 /* IEU0 */
+
+28: retl /* CTI+IEU1 Group */
+ add %o0, -15, %o0 /* IEU0 */
+29: retl /* CTI+IEU1 Group */
+ add %o0, -16, %o0 /* IEU0 */
+
+30: retl /* CTI+IEU1 Group */
+ nop /* IEU0 */
+
+ .align 16
+32: andcc %o0, 7, %g0 /* IEU1 Group */
+ be,a,pn %icc, 18b /* CTI */
+ ldx [%o0], %o3 /* Load */
+ add %o0, 1, %o0 /* IEU0 Group */
+
+ brnz,a,pt %o3, 32b /* CTI+IEU1 */
+ lduba [%o0] ASI_PNF, %o3 /* Load */
+ retl /* CTI+IEU1 Group */
+ add %o0, -1, %o0 /* IEU0 */
+END(strchr)
+
+ .align 32
+ENTRY(strrchr)
+ andcc %o1, 0xff, %o1 /* IEU1 Group */
+ be,pn %icc, 17b /* CTI */
+ clr %g4 /* IEU0 */
+ andcc %o0, 7, %g0 /* IEU1 Group */
+
+ bne,pn %icc, 13f /* CTI */
+ sllx %o1, 8, %g3 /* IEU0 */
+ ldx [%o0], %o3 /* Load Group */
+1: sethi %hi(0x01010101), %g1 /* IEU0 */
+
+ or %g3, %o1, %g3 /* IEU1 */
+ sllx %g3, 16, %g5 /* IEU0 Group */
+ or %g1, %lo(0x01010101), %g1 /* IEU1 */
+ sllx %g1, 32, %g2 /* IEU0 Group */
+
+ or %g3, %g5, %g3 /* IEU1 */
+ sllx %g3, 32, %g5 /* IEU0 Group */
+ or %g1, %g2, %g1 /* IEU1 */
+ sllx %g1, 7, %g2 /* IEU0 Group */
+
+ or %g3, %g5, %g3 /* IEU1 */
+ add %o0, 8, %o0 /* IEU0 Group */
+ xor %o3, %g3, %o4 /* IEU1 */
+ /* %g1 = 0101010101010101 *
+ * %g2 = 8080088080808080 *
+ * %g3 = c c c c c c c c *
+ * %o3 = value *
+ * %o4 = value XOR c */
+2: sub %o3, %g1, %o2 /* IEU0 Group */
+
+3: sub %o4, %g1, %o5 /* IEU1 */
+#ifdef EIGHTBIT_NOT_RARE
+ andn %o2, %o3, %g6 /* IEU0 Group */
+ andn %o5, %o4, %o5 /* IEU1 */
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+
+ or %o5, %g6, %o5 /* IEU0 Group */
+#else
+ ldxa [%o0] ASI_PNF, %o3 /* Load */
+
+ or %o5, %o2, %o5 /* IEU0 Group */
+#endif
+ add %o0, 8, %o0 /* IEU1 */
+ andcc %o5, %g2, %g0 /* IEU1 Group */
+ be,a,pt %xcc, 2b /* CTI */
+
+ xor %o3, %g3, %o4 /* IEU0 */
+ srlx %o5, 32, %g5 /* IEU0 Group */
+ add %o2, %g1, %o2 /* IEU1 */
+ andcc %g5, %g2, %g0 /* IEU1 Group */
+
+ be,pn %xcc, 7f /* CTI */
+ srlx %o2, 56, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+
+ srlx %o4, 56, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ srlx %o2, 48, %g5 /* IEU0 */
+ be,a,pn %icc, 4f /* CTI */
+
+ add %o0, -16, %g4 /* IEU0 Group */
+4: andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+ srlx %o4, 48, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ srlx %o2, 40, %g5 /* IEU0 */
+ be,a,pn %icc, 5f /* CTI */
+ add %o0, -15, %g4 /* IEU0 Group */
+
+5: andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+ srlx %o4, 40, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ srlx %o2, 32, %g5 /* IEU0 */
+ be,a,pn %icc, 6f /* CTI */
+ add %o0, -14, %g4 /* IEU0 Group */
+6: andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,pn %icc, 12f /* CTI */
+ srlx %o4, 32, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,a,pn %icc, 7f /* CTI */
+
+ add %o0, -13, %g4 /* IEU0 */
+7: srlx %o2, 24, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+
+ srlx %o4, 24, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ srlx %o2, 16, %g5 /* IEU0 */
+ be,a,pn %icc, 8f /* CTI */
+
+ add %o0, -12, %g4 /* IEU0 Group */
+8: andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+ srlx %o4, 16, %g5 /* IEU0 */
+
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+ srlx %o2, 8, %g5 /* IEU0 */
+ be,a,pn %icc, 9f /* CTI */
+ add %o0, -11, %g4 /* IEU0 Group */
+
+9: andcc %g5, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+ srlx %o4, 8, %g5 /* IEU0 */
+ andcc %g5, 0xff, %g0 /* IEU1 Group */
+
+ be,a,pn %icc, 10f /* CTI */
+ add %o0, -10, %g4 /* IEU0 */
+10: andcc %o2, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12f /* CTI */
+
+ sub %o3, %g1, %o2 /* IEU0 */
+ andcc %o4, 0xff, %g0 /* IEU1 Group */
+ be,a,pn %icc, 11f /* CTI */
+ add %o0, -9, %g4 /* IEU0 */
+
+11: ba,pt %xcc, 3b /* CTI Group */
+ xor %o3, %g3, %o4 /* IEU0 Group */
+12: retl /* CTI+IEU1 Group */
+ mov %g4, %o0 /* IEU0 */
+
+ .align 16
+13: ldub [%o0], %o3 /* Load Group */
+ add %o0, 1, %o0 /* IEU0 */
+14: andcc %o3, 0xff, %g0 /* IEU1 Group */
+ be,pn %icc, 12b /* CTI */
+
+ cmp %o3, %o1 /* IEU1 Group */
+ ldub [%o0], %o3 /* Load */
+ be,a,pn %icc, 15f /* CTI */
+ add %o0, -1, %g4 /* IEU0 Group */
+
+15: andcc %o0, 7, %g0 /* IEU1 Group */
+ bne,a,pt %icc, 14b /* CTI */
+ add %o0, 1, %o0 /* IEU0 */
+ ba,pt %xcc, 1b /* CTI Group */
+
+ ldx [%o0], %o3 /* Load */
+END(strrchr)
+
+weak_alias (strchr, index)
+weak_alias (strrchr, rindex)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 21:55:44 +0000