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annotate src/cs/system/main/gcc/irq_twiddle.S @ 11:d65489886c6e

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src/nucleus/gcc/tct.S: no small sleep in FFS editor
author Mychaela Falconia <falcon@freecalypso.org>
date Fri, 15 May 2020 03:56:21 +0000
parents 92470e5d0b9e
children
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1 /*
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2 * TI's L1 code (and possibly other parts of the software suite) calls
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3 * functions named INT_DisableIRQ() and INT_EnableIRQ(); in TI's original
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4 * fw they are implemented (in a very ugly manner, as usual) in the
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5 * int.s entry point assembly module. Here we implement the same
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6 * functions in a cleaner way.
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7 */
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8
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9 #include "asm_defs.h"
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10
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11 .code 32
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12 .text
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13
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14 .globl INT_DisableIRQ
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15 INT_DisableIRQ:
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16 mrs r0, CPSR
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17 orr r0, r0, #LOCKOUT
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18 msr CPSR, r0
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19 bx lr
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21 .globl INT_EnableIRQ
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22 INT_EnableIRQ:
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23 mrs r0, CPSR
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24 bic r0, r0, #LOCKOUT
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25 msr CPSR, r0
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26 bx lr