1/*- 2 * Mach Operating System 3 * Copyright (c) 1991,1990 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 * from: FreeBSD: src/sys/i386/include/db_machdep.h,v 1.16 1999/10/04 27 * $FreeBSD$ 28 */ 29 30#ifndef _MACHINE_DB_MACHDEP_H_ 31#define _MACHINE_DB_MACHDEP_H_ 32 33#include <machine/frame.h> 34#include <machine/trap.h> 35#include <machine/armreg.h> 36 37#define T_BREAKPOINT (1) 38typedef vm_offset_t db_addr_t; 39typedef int db_expr_t; 40 41#define PC_REGS() ((db_addr_t)kdb_thrctx->un_32.pcb32_pc) 42 43#define BKPT_INST (KERNEL_BREAKPOINT) 44#define BKPT_SIZE (INSN_SIZE) 45#define BKPT_SET(inst) (BKPT_INST) 46 47#define BKPT_SKIP do { \ 48 kdb_frame->tf_pc += BKPT_SIZE; \ 49} while (0) 50 51#define SOFTWARE_SSTEP 1 52 53#define IS_BREAKPOINT_TRAP(type, code) (type == T_BREAKPOINT) 54#define IS_WATCHPOINT_TRAP(type, code) (0) 55 56 57#define inst_trap_return(ins) (0) 58/* ldmxx reg, {..., pc} 59 01800000 stack mode 60 000f0000 register 61 0000ffff register list */ 62/* mov pc, reg 63 0000000f register */ 64#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 65 ((ins) & 0x0ff0fff0) == 0x01a0f000 || \ 66 ((ins) & 0x0ffffff0) == 0x012fff10) /* bx */ 67/* bl ... 68 00ffffff offset>>2 */ 69#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 70/* b ... 71 00ffffff offset>>2 */ 72/* ldr pc, [pc, reg, lsl #2] 73 0000000f register */ 74 75#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 76 ((ins) & 0x0fdffff0) == 0x079ff100 || \ 77 ((ins) & 0x0cf0f000) == 0x0490f000 || \ 78 ((ins) & 0x0ffffff0) == 0x012fff30 || /* blx */ \ 79 ((ins) & 0x0de0f000) == 0x0080f000) 80 81#define inst_load(ins) (0) 82#define inst_store(ins) (0) 83 84#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 85 86#define DB_SMALL_VALUE_MAX (0x7fffffff) 87#define DB_SMALL_VALUE_MIN (-0x40001) 88 89#define DB_ELFSIZE 32 90 91int db_validate_address(vm_offset_t); 92 93u_int branch_taken (u_int insn, u_int pc); 94 95#ifdef __ARMEB__ 96#define BYTE_MSF (1) 97#endif 98#endif /* !_MACHINE_DB_MACHDEP_H_ */ 99