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4474ef055c
Rework set_dabr to take a DABRX value as well. Both the pseries and PS3 hypervisors do some checks on the DABRX values that are passed in the hcall. This patch stops bogus values from being passed to hypervisor. Also, in the case where we are clearing the breakpoint, where DABR and DABRX are zero, we modify the DABRX value to make it valid so that the hcall won't fail. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
57 lines
1.9 KiB
C
57 lines
1.9 KiB
C
/*
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* Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu>
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*/
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#ifndef _ASM_POWERPC_DEBUG_H
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#define _ASM_POWERPC_DEBUG_H
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struct pt_regs;
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extern struct dentry *powerpc_debugfs_root;
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#if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC)
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extern int (*__debugger)(struct pt_regs *regs);
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extern int (*__debugger_ipi)(struct pt_regs *regs);
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extern int (*__debugger_bpt)(struct pt_regs *regs);
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extern int (*__debugger_sstep)(struct pt_regs *regs);
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extern int (*__debugger_iabr_match)(struct pt_regs *regs);
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extern int (*__debugger_dabr_match)(struct pt_regs *regs);
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extern int (*__debugger_fault_handler)(struct pt_regs *regs);
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#define DEBUGGER_BOILERPLATE(__NAME) \
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static inline int __NAME(struct pt_regs *regs) \
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{ \
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if (unlikely(__ ## __NAME)) \
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return __ ## __NAME(regs); \
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return 0; \
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}
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DEBUGGER_BOILERPLATE(debugger)
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DEBUGGER_BOILERPLATE(debugger_ipi)
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DEBUGGER_BOILERPLATE(debugger_bpt)
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DEBUGGER_BOILERPLATE(debugger_sstep)
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DEBUGGER_BOILERPLATE(debugger_iabr_match)
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DEBUGGER_BOILERPLATE(debugger_dabr_match)
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DEBUGGER_BOILERPLATE(debugger_fault_handler)
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#else
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static inline int debugger(struct pt_regs *regs) { return 0; }
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static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
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static inline int debugger_bpt(struct pt_regs *regs) { return 0; }
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static inline int debugger_sstep(struct pt_regs *regs) { return 0; }
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static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; }
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static inline int debugger_dabr_match(struct pt_regs *regs) { return 0; }
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static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; }
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#endif
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extern int set_dabr(unsigned long dabr, unsigned long dabrx);
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#ifdef CONFIG_PPC_ADV_DEBUG_REGS
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extern void do_send_trap(struct pt_regs *regs, unsigned long address,
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unsigned long error_code, int signal_code, int brkpt);
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#else
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extern void do_dabr(struct pt_regs *regs, unsigned long address,
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unsigned long error_code);
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#endif
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#endif /* _ASM_POWERPC_DEBUG_H */
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