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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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33 lines
750 B
ArmAsm
33 lines
750 B
ArmAsm
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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/*
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* Function: v7_early_abort
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*
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* Params : r2 = address of aborted instruction
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* : r3 = saved SPSR
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*
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* Returns : r0 = address of abort
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* : r1 = FSR, bit 11 = write
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* : r2-r8 = corrupted
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* : r9 = preserved
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* : sp = pointer to registers
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*
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* Purpose : obtain information about current aborted instruction.
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*/
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.align 5
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ENTRY(v7_early_abort)
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/*
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* The effect of data aborts on on the exclusive access monitor are
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* UNPREDICTABLE. Do a CLREX to clear the state
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*/
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clrex
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mrc p15, 0, r1, c5, c0, 0 @ get FSR
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mrc p15, 0, r0, c6, c0, 0 @ get FAR
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/*
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* V6 code adjusts the returned DFSR.
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* New designs should not need to patch up faults.
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*/
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mov pc, lr
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