diff options
Diffstat (limited to 'src/pkg/runtime/memclr_arm.s')
| -rw-r--r-- | src/pkg/runtime/memclr_arm.s | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/src/pkg/runtime/memclr_arm.s b/src/pkg/runtime/memclr_arm.s deleted file mode 100644 index b19ea72a3..000000000 --- a/src/pkg/runtime/memclr_arm.s +++ /dev/null @@ -1,87 +0,0 @@ -// Inferno's libkern/memset-arm.s -// http://code.google.com/p/inferno-os/source/browse/libkern/memset-arm.s -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved. -// Portions Copyright 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "../../cmd/ld/textflag.h" - -TO = 8 -TOE = 11 -N = 12 -TMP = 12 /* N and TMP don't overlap */ - -TEXT runtime·memclr(SB),NOSPLIT,$0-8 - MOVW ptr+0(FP), R(TO) - MOVW n+4(FP), R(N) - MOVW $0, R(0) - - ADD R(N), R(TO), R(TOE) /* to end pointer */ - - CMP $4, R(N) /* need at least 4 bytes to copy */ - BLT _1tail - -_4align: /* align on 4 */ - AND.S $3, R(TO), R(TMP) - BEQ _4aligned - - MOVBU.P R(0), 1(R(TO)) /* implicit write back */ - B _4align - -_4aligned: - SUB $31, R(TOE), R(TMP) /* do 32-byte chunks if possible */ - CMP R(TMP), R(TO) - BHS _4tail - - MOVW R0, R1 /* replicate */ - MOVW R0, R2 - MOVW R0, R3 - MOVW R0, R4 - MOVW R0, R5 - MOVW R0, R6 - MOVW R0, R7 - -_f32loop: - CMP R(TMP), R(TO) - BHS _4tail - - MOVM.IA.W [R0-R7], (R(TO)) - B _f32loop - -_4tail: - SUB $3, R(TOE), R(TMP) /* do remaining words if possible */ -_4loop: - CMP R(TMP), R(TO) - BHS _1tail - - MOVW.P R(0), 4(R(TO)) /* implicit write back */ - B _4loop - -_1tail: - CMP R(TO), R(TOE) - BEQ _return - - MOVBU.P R(0), 1(R(TO)) /* implicit write back */ - B _1tail - -_return: - RET |