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thumb software interrupt fix link register offset

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Matthew Berry 2020-11-03 00:04:15 -08:00
parent ba6fde31b1
commit 59769a222c
1 changed files with 1 additions and 1 deletions
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src/crab/thumb/software_interrupt.cr
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@ -1,6 +1,6 @@
module THUMB module THUMB
def thumb_software_interrupt(instr : Word) : Nil def thumb_software_interrupt(instr : Word) : Nil
lr = @r[15] - 4 lr = @r[15] - 2
switch_mode CPU::Mode::SVC switch_mode CPU::Mode::SVC
set_reg(14, lr) set_reg(14, lr)
@cpsr.irq_disable = true @cpsr.irq_disable = true