Changes

SVC (edit)

Revision as of 16:37, 25 March 2016

139 bytes added , 16:37, 25 March 2016

Add Interrupts

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| style="background: green" | Yes

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| Result BindInterrupt(Interrupt name, Handle syncObject, s32 priority, bool isManualClear)

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| Result [[SVC#Interrupts|BindInterrupt]](Interrupt name, Handle syncObject, s32 priority, bool isManualClear)

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= svc7B Backdoor =

This saves SVC-mode SP+LR on the user-mode stack, then sets the SVC-mode SP to the user-mode SP. This then calls the specified code in SVC-mode. Once the called code returns, this pops the saved SP+LR off the stack for restoring the SVC-mode SP, then returns from the svc7b handler. Note that this svc7b handler does not disable IRQs, if any IRQs/context-switches occur while the SVC-mode SP is set to the user-mode one here, the ARM11-kernel will crash(which hangs the whole ARM11-side system).

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= Interrupts =

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{| class="wikitable" border="1"

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! Interrupt numbers

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! Module using it

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|-

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| 0x54, 0x55, 0x5C

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| I2C

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|}

= Kernel error-codes =

Xerpi

85

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