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1
by Michael Hope
Pulled in the initial versions |
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/* Copyright (C) 1998, 2003 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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Contributed by Philip Blundell <philb@gnu.org> |
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Lesser General Public |
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License as published by the Free Software Foundation; either |
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version 2.1 of the License, or (at your option) any later version. |
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Lesser General Public License for more details. |
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You should have received a copy of the GNU Lesser General Public |
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License along with the GNU C Library; if not, write to the Free |
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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02111-1307 USA. */ |
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/* void *memset (dstpp, c, len) */ |
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77
by Michael Hope
Added function type attributes to all reference assembly versions. |
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.text
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.global memset |
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.type memset, %function |
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4
by Michael Hope
Modified the imported versions to build locally. Added the CSL routines. |
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memset: |
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1
by Michael Hope
Pulled in the initial versions |
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mov r3, r0 |
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cmp r2, #8 |
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bcc 2f @ less than 8 bytes to move |
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1: |
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tst r3, #3 @ aligned yet? |
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strneb r1, [r3], #1 |
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subne r2, r2, #1 |
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bne 1b |
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and r1, r1, #255 @ clear any sign bits |
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orr r1, r1, r1, lsl $8 |
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orr r1, r1, r1, lsl $16 |
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mov ip, r1 |
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1: |
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subs r2, r2, #8 |
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stmcsia r3!, {r1, ip} @ store up to 32 bytes per loop iteration |
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subcss r2, r2, #8 |
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stmcsia r3!, {r1, ip} |
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subcss r2, r2, #8 |
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stmcsia r3!, {r1, ip} |
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subcss r2, r2, #8 |
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stmcsia r3!, {r1, ip} |
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bcs 1b |
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and r2, r2, #7 |
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2: |
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subs r2, r2, #1 @ store up to 4 bytes per loop iteration |
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strcsb r1, [r3], #1 |
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subcss r2, r2, #1 |
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strcsb r1, [r3], #1 |
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subcss r2, r2, #1 |
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strcsb r1, [r3], #1 |
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subcss r2, r2, #1 |
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strcsb r1, [r3], #1 |
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bcs 2b |
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4
by Michael Hope
Modified the imported versions to build locally. Added the CSL routines. |
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bx lr |