Blame - src/runtime/memclr_plan9_386.s - go

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Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	1	// Copyright 2014 The Go Authors. All rights reserved.
				2	// Use of this source code is governed by a BSD-style
				3	// license that can be found in the LICENSE file.
				4
Russ Cox	cb040d5	2014-09-04 23:05:18 -0400	[diff] [blame]	5	#include "textflag.h"
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	6
				7	// void runtime·memclr(void*, uintptr)
				8	TEXT runtime·memclr(SB), NOSPLIT, $0-8
				9	MOVL ptr+0(FP), DI
				10	MOVL n+4(FP), BX
				11	XORL AX, AX
				12
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	13	tail:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	14	TESTL BX, BX
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	15	JEQ _0
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	16	CMPL BX, $2
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	17	JBE _1or2
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	18	CMPL BX, $4
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	19	JBE _3or4
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	20	CMPL BX, $8
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	21	JBE _5through8
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	22	CMPL BX, $16
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	23	JBE _9through16
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	24	MOVL BX, CX
				25	SHRL $2, CX
				26	REP
				27	STOSL
				28	ANDL $3, BX
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	29	JNE tail
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	30	RET
				31
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	32	_1or2:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	33	MOVB AX, (DI)
				34	MOVB AX, -1(DI)(BX*1)
Josh Bleecher Snyder	bc9e160	2014-08-01 06:21:08 -0700	[diff] [blame]	35	RET
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	36	_0:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	37	RET
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	38	_3or4:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	39	MOVW AX, (DI)
				40	MOVW AX, -2(DI)(BX*1)
				41	RET
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	42	_5through8:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	43	MOVL AX, (DI)
				44	MOVL AX, -4(DI)(BX*1)
				45	RET
Russ Cox	b55791e	2014-10-28 21:50:16 -0400	[diff] [blame]	46	_9through16:
Anthony Martin	8303a13	2014-03-12 18:12:25 -0700	[diff] [blame]	47	MOVL AX, (DI)
				48	MOVL AX, 4(DI)
				49	MOVL AX, -8(DI)(BX*1)
				50	MOVL AX, -4(DI)(BX*1)
				51	RET