db_machdep.h revision 209975
1254721Semaste/*- 2254721Semaste * Mach Operating System 3254721Semaste * Copyright (c) 1992 Carnegie Mellon University 4254721Semaste * All Rights Reserved. 5254721Semaste * 6254721Semaste * Permission to use, copy, modify and distribute this software and its 7254721Semaste * documentation is hereby granted, provided that both the copyright 8254721Semaste * notice and this permission notice appear in all copies of the 9254721Semaste * software, derivative works or modified versions, and any portions 10254721Semaste * thereof, and that both notices appear in supporting documentation. 11254721Semaste * 12254721Semaste * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13254721Semaste * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14254721Semaste * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15254721Semaste * 16254721Semaste * Carnegie Mellon requests users of this software to return to 17254721Semaste * 18254721Semaste * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19254721Semaste * School of Computer Science 20254721Semaste * Carnegie Mellon University 21254721Semaste * Pittsburgh PA 15213-3890 22254721Semaste * 23254721Semaste * any improvements or extensions that they make and grant Carnegie Mellon 24254721Semaste * the rights to redistribute these changes. 25254721Semaste * 26254721Semaste * $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $ 27254721Semaste * $NetBSD: db_machdep.h,v 1.4.22.1 2000/08/05 11:10:43 wiz Exp $ 28254721Semaste * $FreeBSD: head/sys/powerpc/include/db_machdep.h 209975 2010-07-13 05:32:19Z nwhitehorn $ 29254721Semaste */ 30254721Semaste 31254721Semaste/* 32254721Semaste * Machine-dependent defines for new kernel debugger. 33254721Semaste */ 34254721Semaste#ifndef _POWERPC_DB_MACHDEP_H_ 35254721Semaste#define _POWERPC_DB_MACHDEP_H_ 36254721Semaste 37254721Semaste#include <vm/vm_param.h> 38254721Semaste#include <machine/elf.h> 39254721Semaste 40254721Semaste#define DB_ELF_SYMBOLS 41254721Semaste#define DB_ELFSIZE __ELF_WORD_SIZE 42254721Semaste 43254721Semaste#define BYTE_MSF (1) 44254721Semaste 45254721Semastetypedef vm_offset_t db_addr_t; /* address - unsigned */ 46254721Semastetypedef intptr_t db_expr_t; /* expression - signed */ 47254721Semaste 48254721Semaste#define PC_REGS(regs) ((db_addr_t)kdb_thrctx->pcb_lr) 49254721Semaste 50254721Semaste#define BKPT_INST 0x7C810808 /* breakpoint instruction */ 51254721Semaste 52254721Semaste#define BKPT_SIZE (4) /* size of breakpoint inst */ 53254721Semaste#define BKPT_SET(inst) (BKPT_INST) 54254721Semaste 55254721Semaste#define db_clear_single_step kdb_cpu_clear_singlestep 56254721Semaste#define db_set_single_step kdb_cpu_set_singlestep 57254721Semaste 58254721Semaste#if 0 59254721Semaste#define SR_SINGLESTEP 0x400 60254721Semaste#define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP) 61254721Semaste#define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP) 62254721Semaste#endif 63254721Semaste 64254721Semaste#define T_BREAKPOINT 0xffff 65254721Semaste#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 66254721Semaste 67254721Semaste#define T_WATCHPOINT 0xeeee 68254721Semaste#ifdef T_WATCHPOINT 69254721Semaste#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 70254721Semaste#else 71254721Semaste#define IS_WATCHPOINT_TRAP(type, code) 0 72254721Semaste#endif 73254721Semaste 74254721Semaste#define M_RTS 0xfc0007fe 75254721Semaste#define I_RTS 0x4c000020 76254721Semaste#define M_BC 0xfc000000 77254721Semaste#define I_BC 0x40000000 78254721Semaste#define M_B 0xfc000000 79254721Semaste#define I_B 0x50000000 80254721Semaste#define M_RFI 0xfc0007fe 81254721Semaste#define I_RFI 0x4c000064 82254721Semaste 83254721Semaste#define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) 84254721Semaste#define inst_return(ins) (((ins)&M_RTS) == I_RTS) 85254721Semaste#define inst_call(ins) (((ins)&M_BC ) == I_BC || \ 86254721Semaste ((ins)&M_B ) == I_B ) 87254721Semaste#define inst_load(ins) 0 88254721Semaste#define inst_store(ins) 0 89254721Semaste 90254721Semaste#define DB_SMALL_VALUE_MAX (0x7fffffff) 91254721Semaste#define DB_SMALL_VALUE_MIN (-0x40001) 92254721Semaste 93254721Semaste#endif /* _POWERPC_DB_MACHDEP_H_ */ 94254721Semaste