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MIPS: Clear Cause.BD in instruction_pointer_set

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[ Upstream commit 9d6e21ddf2 ]

Clear Cause.BD after we use instruction_pointer_set to override
EPC.

This can prevent exception_epc check against instruction code at
new return address.
It won't be considered as "in delay slot" after epc being overridden
anyway.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jiaxun Yang 2024-02-02 12:30:27 +00:00 committed by Sasha Levin
parent a9bbb05c0c
commit ab63a80996
1 changed files with 1 additions and 0 deletions
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1
arch/mips/include/asm/ptrace.h
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@ -60,6 +60,7 @@ static inline void instruction_pointer_set(struct pt_regs *regs,
unsigned long val) unsigned long val)
{ {
regs->cp0_epc = val; regs->cp0_epc = val;
regs->cp0_cause &= ~CAUSEF_BD;
} }
/* Query offset/name of register from its name/offset */ /* Query offset/name of register from its name/offset */