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Diffstat (limited to 'ports/sysdeps/ia64/strcpy.S')
| -rw-r--r-- | ports/sysdeps/ia64/strcpy.S | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/ports/sysdeps/ia64/strcpy.S b/ports/sysdeps/ia64/strcpy.S deleted file mode 100644 index e0ad967fa2..0000000000 --- a/ports/sysdeps/ia64/strcpy.S +++ /dev/null @@ -1,144 +0,0 @@ -/* Optimized version of the standard strcpy() function. - This file is part of the GNU C Library. - Copyright (C) 2000-2014 Free Software Foundation, Inc. - Contributed by Dan Pop <Dan.Pop@cern.ch>. - - 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/>. */ - -/* Return: dest - - Inputs: - in0: dest - in1: src - - In this form, it assumes little endian mode. For big endian mode, - the two shifts in .l2 must be inverted: - - shl value = r[1], sh1 // value = w0 << sh1 - shr.u tmp = r[0], sh2 // tmp = w1 >> sh2 - */ - -#include <sysdep.h> -#undef ret - -#define saved_lc r15 -#define saved_pr r16 -#define thresh r17 -#define dest r19 -#define src r20 -#define len r21 -#define asrc r22 -#define tmp r23 -#define pos r24 -#define w0 r25 -#define w1 r26 -#define c r27 -#define sh2 r28 -#define sh1 r29 -#define loopcnt r30 -#define value r31 - -ENTRY(strcpy) - .prologue - alloc r2 = ar.pfs, 2, 0, 30, 32 - -#define MEMLAT 2 - .rotr r[MEMLAT + 2] - .rotp p[MEMLAT + 1] - - mov ret0 = in0 // return value = dest - .save pr, saved_pr - mov saved_pr = pr // save the predicate registers - .save ar.lc, saved_lc - mov saved_lc = ar.lc // save the loop counter - .body - sub tmp = r0, in0 ;; // tmp = -dest - mov dest = in0 // dest - mov src = in1 // src - and loopcnt = 7, tmp ;; // loopcnt = -dest % 8 - cmp.eq p6, p0 = loopcnt, r0 - adds loopcnt = -1, loopcnt // --loopcnt -(p6) br.cond.sptk .dest_aligned ;; - mov ar.lc = loopcnt -.l1: // copy -dest % 8 bytes - ld1 c = [src], 1 // c = *src++ - ;; - st1 [dest] = c, 1 // *dest++ = c - cmp.eq p6, p0 = c, r0 -(p6) br.cond.dpnt .restore_and_exit - br.cloop.dptk .l1 ;; -.dest_aligned: - and sh1 = 7, src // sh1 = src % 8 - mov ar.lc = -1 // "infinite" loop - and asrc = -8, src ;; // asrc = src & -OPSIZ -- align src - sub thresh = 8, sh1 - mov pr.rot = 1 << 16 // set rotating predicates - cmp.ne p7, p0 = r0, r0 // clear p7 - shl sh1 = sh1, 3 ;; // sh1 = 8 * (src % 8) - sub sh2 = 64, sh1 // sh2 = 64 - sh1 - cmp.eq p6, p0 = sh1, r0 // is the src aligned? -(p6) br.cond.sptk .src_aligned ;; - ld8 r[1] = [asrc],8 ;; - - .align 32 -.l2: - ld8.s r[0] = [asrc], 8 - shr.u value = r[1], sh1 ;; // value = w0 >> sh1 - czx1.r pos = value ;; // do we have an "early" zero - cmp.lt p7, p0 = pos, thresh // in w0 >> sh1? -(p7) br.cond.dpnt .found0 - chk.s r[0], .recovery2 // it is safe to do that only -.back2: // after the previous test - shl tmp = r[0], sh2 // tmp = w1 << sh2 - ;; - or value = value, tmp ;; // value |= tmp - czx1.r pos = value ;; - cmp.ne p7, p0 = 8, pos -(p7) br.cond.dpnt .found0 - st8 [dest] = value, 8 // store val to dest - br.ctop.dptk .l2 ;; -.src_aligned: -.l3: -(p[0]) ld8.s r[0] = [src], 8 -(p[MEMLAT]) chk.s r[MEMLAT], .recovery3 -.back3: -(p[MEMLAT]) mov value = r[MEMLAT] -(p[MEMLAT]) czx1.r pos = r[MEMLAT] ;; -(p[MEMLAT]) cmp.ne p7, p0 = 8, pos -(p7) br.cond.dpnt .found0 -(p[MEMLAT]) st8 [dest] = r[MEMLAT], 8 - br.ctop.dptk .l3 ;; -.found0: - mov ar.lc = pos -.l4: - extr.u c = value, 0, 8 // c = value & 0xff - shr.u value = value, 8 - ;; - st1 [dest] = c, 1 - br.cloop.dptk .l4 ;; -.restore_and_exit: - mov ar.lc = saved_lc // restore the loop counter - mov pr = saved_pr, -1 // restore the predicate registers - br.ret.sptk.many b0 -.recovery2: - add tmp = -8, asrc ;; - ld8 r[0] = [tmp] - br.cond.sptk .back2 -.recovery3: - add tmp = -(MEMLAT + 1) * 8, src ;; - ld8 r[MEMLAT] = [tmp] - br.cond.sptk .back3 -END(strcpy) -libc_hidden_builtin_def (strcpy) |