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https://github.com/torvalds/linux
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Tip revision: 30a0b95b1335e12efef89dd78518ed3e4a71a763 authored by Linus Torvalds on 30 October 2022, 22:19:28 UTC
Linux 6.1-rc3
Tip revision: 30a0b95
loop.S
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright 2013, Michael Ellerman, IBM Corp.
 */

#include <ppc-asm.h>

	.text

FUNC_START(thirty_two_instruction_loop)
	cmpdi	r3,0
	beqlr
	addi	r4,r3,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1
	addi	r4,r4,1	# 28 addi's
	subi	r3,r3,1
	b	FUNC_NAME(thirty_two_instruction_loop)
FUNC_END(thirty_two_instruction_loop)

FUNC_START(thirty_two_instruction_loop_with_ll_sc)
	cmpdi	r3,0
	beqlr
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1		# 5
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
1:	ldarx	r6,0,r4		# 10
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1		# 15
	addi	r5,r5,1
	addi	r5,r5,1
	stdcx.	r6,0,r4
	bne-	1b
	addi	r5,r5,1		# 20
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1		# 25
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1
	addi	r5,r5,1		# 30
	subi	r3,r3,1
	b	FUNC_NAME(thirty_two_instruction_loop_with_ll_sc)
FUNC_END(thirty_two_instruction_loop_with_ll_sc)
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