| version 1.4, 2007/11/05 18:54:35 |
version 1.5, 2007/11/23 13:37:42 |
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| /* store all system mode registers */ |
/* store all system mode registers */ |
| stmdb sp!, {r0-r12, lr} |
stmdb sp!, {r0-r12, lr} |
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|
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/* store sys_mode's cpsr */ |
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// mrs r1, spsr |
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// stmdb sp!, {r1} |
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/* pass sp (which now contains struct pcb of interrupted task) to irq_trampoline */ |
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mov r0, sp |
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| bl irq_trampoline |
bl irq_trampoline |
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|
| /* load r0-r12 and pc from the stack */ |
/* load r0-r12 and pc from the stack */ |
| /* note ^ that copies SPSR into CPSR */ |
/* note ^ that copies SPSR into CPSR */ |
| |
/** here we may return to different task (if pcb was changed in the stack memory) **/ |
| ldmia sp!, {r0-r12, pc}^ |
ldmia sp!, {r0-r12, pc}^ |
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|
| _vector_fiq: |
_vector_fiq: |
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