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view src/cs/system/main/gcc/irq_twiddle.S @ 266:160a5b3a076c

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new ABB_SLEEP_RESTRICTION definition in fc-target.h When we first introduced the mechanism to suppress ABB superdeep sleep on targets with LCDs powered from Iota VRIO, we made it conditional on CONFIG_TARGET_LUNA. This conditional is now being generalized: the feature in question is now conditionalized on the new ABB_SLEEP_RESTRICTION preprocessor symbol, to be defined in targets/*.h for those targets that need it. The new ABB_SLEEP_RESTRICTION definition is being added to targets/luna[12].h to keep the actual logic unchanged.
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 02 Jun 2021 02:12:14 +0000
parents 4e78acac3d88
children
line wrap: on
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/*
 * TI's L1 code (and possibly other parts of the software suite) calls
 * functions named INT_DisableIRQ() and INT_EnableIRQ(); in TI's original
 * fw they are implemented (in a very ugly manner, as usual) in the
 * int.s entry point assembly module.  Here we implement the same
 * functions in a cleaner way.
 */

#include "asm_defs.h"

	.code 32
	.text

	.globl	INT_DisableIRQ
INT_DisableIRQ:
	mrs	r0, CPSR
	orr	r0, r0, #LOCKOUT
	msr	CPSR, r0
	bx	lr

	.globl	INT_EnableIRQ
INT_EnableIRQ:
	mrs	r0, CPSR
	bic	r0, r0, #LOCKOUT
	msr	CPSR, r0
	bx	lr