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cpu/arm7: Fix undefined behavior based on invalid assembly

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This commit is contained in:
Teufelchen1 2023-05-19 11:08:08 +02:00
parent b93328d14b
commit 583a1da348
1 changed files with 4 additions and 0 deletions
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4
cpu/arm7_common/common.s
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@ -101,6 +101,10 @@ task_return:
/* Restore all registers, PC & cpsr */
ldmfd r0, {r0-lr}^
/* According to ARM Architecture Reference Manual DDI 0100I,
* ldms which affect banked registers must be followed by a nop.
*/
nop
/* return to task */
movs pc, lr