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powerpc: Add ppc_breakpoint_available()

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Add ppc_breakpoint_available() to determine if a breakpoint is
available currently via the DAWR or DABR.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Michael Neuling
2018-03-27 15:37:17 +11:00
committed by Michael Ellerman
parent 681c617b7c
commit 404b27d66e
2 changed files with 13 additions and 0 deletions
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arch/powerpc/include/asm/debug.h
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@@ -47,6 +47,7 @@ static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
void set_breakpoint(struct arch_hw_breakpoint *brk);
void __set_breakpoint(struct arch_hw_breakpoint *brk);
bool ppc_breakpoint_available(void);
#ifdef CONFIG_PPC_ADV_DEBUG_REGS
extern void do_send_trap(struct pt_regs *regs, unsigned long address,
unsigned long error_code, int brkpt);