/* $OpenBSD: db_machdep.h,v 1.5 2001/11/06 00:30:38 art Exp $ */ /* $NetBSD: db_machdep.h,v 1.13 1996/04/29 20:50:08 leo Exp $ */ /* * Mach Operating System * Copyright (c) 1992 Carnegie Mellon University * All Rights Reserved. * * Permission to use, copy, modify and distribute this software and its * documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie Mellon * the rights to redistribute these changes. */ /* * Machine-dependent defines for new kernel debugger. */ #ifndef _PPC_DB_MACHDEP_H_ #define _PPC_DB_MACHDEP_H_ #include <uvm/uvm_param.h> #include <machine/trap.h> /* ELF symbols in ddb */ #define DB_ELF_SYMBOLS #define DB_ELFSIZE 32 typedef vm_offset_t db_addr_t; /* address - unsigned */ typedef int db_expr_t; /* expression - signed */ struct powerpc_saved_state { u_int32_t r[32]; /* data registers */ u_int32_t iar; u_int32_t msr; }; typedef struct powerpc_saved_state db_regs_t; db_regs_t ddb_regs; /* register state */ #define DDB_REGS (&ddb_regs) #define PC_REGS(regs) ((regs)->iar) #define BKPT_INST 0x7C810808 /* breakpoint instruction */ #define BKPT_SIZE (4) /* size of breakpoint inst */ #define BKPT_SET(inst) (BKPT_INST) #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->iar -= 4) #define SR_SINGLESTEP 0x8000 #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) #define T_BREAKPOINT 0xffff #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) #ifdef T_WATCHPOINT #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) #else #define IS_WATCHPOINT_TRAP(type, code) 0 #endif #define M_RTS 0xfc0007fe #define I_RTS 0x4c000020 #define M_BC 0xfc000000 #define I_BC 0x40000000 #define M_B 0xfc000000 #define I_B 0x50000000 #define M_RFI 0xfc0007fe #define I_RFI 0x4c000064 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) #define inst_return(ins) (((ins)&M_RTS) == I_RTS) #define inst_call(ins) (((ins)&M_BC ) == I_BC || \ ((ins)&M_B ) == I_B ) #define inst_load(ins) 0 #define inst_store(ins) 0 #ifdef _KERNEL void kdb_kintr __P((void *)); int kdb_trap __P((int, void *)); #endif /* _KERNEL */ #endif /* _PPC_DB_MACHDEP_H_ */