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MIPS: branch: New helpers to modify branch delay slot flag in struct pt_regs

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2014-04-16 01:52:32 +02:00
parent 2209bcb131
commit 5a7ebbf893
1 changed files with 10 additions and 0 deletions
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10
arch/mips/include/asm/branch.h
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@ -24,6 +24,16 @@ static inline int delay_slot(struct pt_regs *regs)
return regs->cp0_cause & CAUSEF_BD; return regs->cp0_cause & CAUSEF_BD;
} }
static inline void clear_delay_slot(struct pt_regs *regs)
{
regs->cp0_cause &= ~CAUSEF_BD;
}
static inline void set_delay_slot(struct pt_regs *regs)
{
regs->cp0_cause |= CAUSEF_BD;
}
static inline unsigned long exception_epc(struct pt_regs *regs) static inline unsigned long exception_epc(struct pt_regs *regs)
{ {
if (likely(!delay_slot(regs))) if (likely(!delay_slot(regs)))