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 */ 29 30 /* 31 * Machine-dependent defines for new kernel debugger. 32 */ 33 #ifndef _POWERPC_DB_MACHDEP_H_ 34 #define _POWERPC_DB_MACHDEP_H_ 35 36 #include <vm/vm_param.h> 37 #include <machine/elf.h> 38 39 #define DB_ELF_SYMBOLS 40 #define DB_ELFSIZE __ELF_WORD_SIZE 41 42 typedef vm_offset_t db_addr_t; /* address - unsigned */ 43 typedef intptr_t db_expr_t; /* expression - signed */ 44 45 #define PC_REGS(regs) ((db_addr_t)kdb_thrctx->pcb_lr) 46 47 #define BKPT_INST 0x7C810808 /* breakpoint instruction */ 48 49 #define BKPT_SIZE (4) /* size of breakpoint inst */ 50 #define BKPT_SET(inst) (BKPT_INST) 51 52 #define db_clear_single_step kdb_cpu_clear_singlestep 53 #define db_set_single_step kdb_cpu_set_singlestep 54 55 #if 0 56 #define SR_SINGLESTEP 0x400 57 #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) 58 #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) 59 #endif 60 61 #define T_BREAKPOINT 0xffff 62 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 63 64 #define T_WATCHPOINT 0xeeee 65 #ifdef T_WATCHPOINT 66 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 67 #else 68 #define IS_WATCHPOINT_TRAP(type, code) 0 69 #endif 70 71 #define M_RTS 0xfc0007fe 72 #define I_RTS 0x4c000020 73 #define M_BC 0xfc000000 74 #define I_BC 0x40000000 75 #define M_B 0xfc000000 76 #define I_B 0x50000000 77 #define M_RFI 0xfc0007fe 78 #define I_RFI 0x4c000064 79 80 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) 81 #define inst_return(ins) (((ins)&M_RTS) == I_RTS) 82 #define inst_call(ins) (((ins)&M_BC ) == I_BC || \ 83 ((ins)&M_B ) == I_B ) 84 #define inst_load(ins) 0 85 #define inst_store(ins) 0 86 87 #endif /* _POWERPC_DB_MACHDEP_H_ */ 88