DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (d8847129d134)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
/***************************************************************************
 * Copyright (c) 2009,2010, Code Aurora Forum. All rights reserved.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 ***************************************************************************/

	.code 32
	.fpu neon
	.align 4
	.globl	memset32_neon
	.func

	/* r0 = buffer, r1 = value, r2 = times to write */
memset32_neon:
	cmp		r2, #1
	streq		r1, [r0], #4
	bxeq		lr

	cmp		r2, #4
	bgt		memset32_neon_start
	cmp		r2, #0
	bxeq		lr
memset32_neon_small:
	str		r1, [r0], #4
	subs		r2, r2, #1
	bne		memset32_neon_small
	bx		lr
memset32_neon_start:
	cmp		r2, #16
	blt		memset32_dropthru
	vdup.32		q0, r1
	vmov		q1, q0
	cmp		r2, #32
	blt		memset32_16
	cmp		r2, #64
	blt		memset32_32
	cmp		r2, #128
	blt		memset32_64
memset32_128:
	movs		r12, r2, lsr #7
memset32_loop128:
	subs		r12, r12, #1
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	bne		memset32_loop128
	ands		r2, r2, #0x7f
	bxeq		lr
memset32_64:
	movs		r12, r2, lsr #6
	beq		memset32_32
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	ands		r2, r2, #0x3f
	bxeq		lr
memset32_32:
	movs		r12, r2, lsr #5
	beq		memset32_16
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
	ands		r2, r2, #0x1f
	bxeq		lr
memset32_16:
	movs		r12, r2, lsr #4
	beq		memset32_dropthru
	and		r2, r2, #0xf
	vst1.64		{q0, q1}, [r0]!
	vst1.64		{q0, q1}, [r0]!
memset32_dropthru:
	rsb		r2, r2, #15
	add		pc, pc, r2, lsl #2
	nop
	str		r1, [r0, #56]
	str		r1, [r0, #52]
	str		r1, [r0, #48]
	str		r1, [r0, #44]
	str		r1, [r0, #40]
	str		r1, [r0, #36]
	str		r1, [r0, #32]
	str		r1, [r0, #28]
	str		r1, [r0, #24]
	str		r1, [r0, #20]
	str		r1, [r0, #16]
	str		r1, [r0, #12]
	str		r1, [r0, #8]
	str		r1, [r0, #4]
	str		r1, [r0, #0]
	bx		lr

	.endfunc
	.end