1 /* 2 * Mach Operating System 3 * Copyright (c) 1992 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 * 26 * $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ 27 * $NetBSD: db_machdep.h,v 1.4.22.1 2000/08/05 11:10:43 wiz Exp $ 28 * $FreeBSD$ 29 */ 30 31 /* 32 * Machine-dependent defines for new kernel debugger. 33 */ 34 #ifndef _PPC_DB_MACHDEP_H_ 35 #define _PPC_DB_MACHDEP_H_ 36 37 #include <vm/vm_param.h> 38 39 #define DB_ELF_SYMBOLS 40 #define DB_ELFSIZE 32 41 42 typedef vm_offset_t db_addr_t; /* address - unsigned */ 43 typedef long db_expr_t; /* expression - signed */ 44 struct powerpc_saved_state { 45 u_int32_t r[32]; /* data registers */ 46 u_int32_t iar; 47 u_int32_t msr; 48 }; 49 typedef struct powerpc_saved_state db_regs_t; 50 extern db_regs_t ddb_regs; /* register state */ 51 #define DDB_REGS (&ddb_regs) 52 53 #define PC_REGS(regs) ((db_addr_t)(regs)->iar) 54 55 #define BKPT_INST 0x7C810808 /* breakpoint instruction */ 56 57 #define BKPT_SIZE (4) /* size of breakpoint inst */ 58 #define BKPT_SET(inst) (BKPT_INST) 59 60 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->iar -= 4) 61 62 #define SR_SINGLESTEP 0x400 63 #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) 64 #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) 65 66 #define T_BREAKPOINT 0xffff 67 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 68 69 #define T_WATCHPOINT 0xeeee 70 #ifdef T_WATCHPOINT 71 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 72 #else 73 #define IS_WATCHPOINT_TRAP(type, code) 0 74 #endif 75 76 #define M_RTS 0xfc0007fe 77 #define I_RTS 0x4c000020 78 #define M_BC 0xfc000000 79 #define I_BC 0x40000000 80 #define M_B 0xfc000000 81 #define I_B 0x50000000 82 #define M_RFI 0xfc0007fe 83 #define I_RFI 0x4c000064 84 85 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) 86 #define inst_return(ins) (((ins)&M_RTS) == I_RTS) 87 #define inst_call(ins) (((ins)&M_BC ) == I_BC || \ 88 ((ins)&M_B ) == I_B ) 89 #define inst_load(ins) 0 90 #define inst_store(ins) 0 91 92 #ifdef _KERNEL 93 94 void kdb_kintr(void *); 95 int kdb_trap(int, void *); 96 97 #endif /* _KERNEL */ 98 99 #endif /* _PPC_DB_MACHDEP_H_ */ 100