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view target-utils/libbase/waitarm.S @ 490:3d7b546c710c

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target-utils/flash-boot-test: more watchdog experimentation commands
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 21 May 2019 23:48:26 +0000
parents 6228d27738d1
children 06ad5e30e8d0
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/*
 * This assembly module provides a wait_ARM_cycles() function just like
 * in TI's firmware; it is meant to gradually replace and phase out
 * osmo_delay_ms().  One loop count for this function equals 5 ARM clock
 * cycles when running out of IRAM.
 */

	.text
	.code	32
	.globl	wait_ARM_cycles
wait_ARM_cycles:
	cmp	r0, #0
	bxeq	lr
1:	sub	r0, r0, #1
	cmp	r0, #0
	bne	1b
	bx	lr