1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * Copyright (C) 1999 Cort Dougan <cort@cs.nmt.edu> 4 */ 5 #ifndef _ASM_POWERPC_DEBUG_H 6 #define _ASM_POWERPC_DEBUG_H 7 8 #include <asm/hw_breakpoint.h> 9 10 struct pt_regs; 11 12 #if defined(CONFIG_DEBUGGER) || defined(CONFIG_KEXEC_CORE) 13 14 extern int (*__debugger)(struct pt_regs *regs); 15 extern int (*__debugger_ipi)(struct pt_regs *regs); 16 extern int (*__debugger_bpt)(struct pt_regs *regs); 17 extern int (*__debugger_sstep)(struct pt_regs *regs); 18 extern int (*__debugger_iabr_match)(struct pt_regs *regs); 19 extern int (*__debugger_break_match)(struct pt_regs *regs); 20 extern int (*__debugger_fault_handler)(struct pt_regs *regs); 21 22 #define DEBUGGER_BOILERPLATE(__NAME) \ 23 static inline int __NAME(struct pt_regs *regs) \ 24 { \ 25 if (unlikely(__ ## __NAME)) \ 26 return __ ## __NAME(regs); \ 27 return 0; \ 28 } 29 30 DEBUGGER_BOILERPLATE(debugger) 31 DEBUGGER_BOILERPLATE(debugger_ipi) 32 DEBUGGER_BOILERPLATE(debugger_bpt) 33 DEBUGGER_BOILERPLATE(debugger_sstep) 34 DEBUGGER_BOILERPLATE(debugger_iabr_match) 35 DEBUGGER_BOILERPLATE(debugger_break_match) 36 DEBUGGER_BOILERPLATE(debugger_fault_handler) 37 38 #else 39 static inline int debugger(struct pt_regs *regs) { return 0; } 40 static inline int debugger_ipi(struct pt_regs *regs) { return 0; } 41 static inline int debugger_bpt(struct pt_regs *regs) { return 0; } 42 static inline int debugger_sstep(struct pt_regs *regs) { return 0; } 43 static inline int debugger_iabr_match(struct pt_regs *regs) { return 0; } 44 static inline int debugger_break_match(struct pt_regs *regs) { return 0; } 45 static inline int debugger_fault_handler(struct pt_regs *regs) { return 0; } 46 #endif 47 48 void __set_breakpoint(int nr, struct arch_hw_breakpoint *brk); 49 bool ppc_breakpoint_available(void); 50 #ifdef CONFIG_PPC_ADV_DEBUG_REGS 51 extern void do_send_trap(struct pt_regs *regs, unsigned long address, 52 unsigned long error_code, int brkpt); 53 #else 54 55 extern void do_break(struct pt_regs *regs, unsigned long address, 56 unsigned long error_code); 57 #endif 58 59 #endif /* _ASM_POWERPC_DEBUG_H */ 60