1 /* $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 1996 Scott K Stevens 5 * 6 * Mach Operating System 7 * Copyright (c) 1991,1990 Carnegie Mellon University 8 * All Rights Reserved. 9 * 10 * Permission to use, copy, modify and distribute this software and its 11 * documentation is hereby granted, provided that both the copyright 12 * notice and this permission notice appear in all copies of the 13 * software, derivative works or modified versions, and any portions 14 * thereof, and that both notices appear in supporting documentation. 15 * 16 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 17 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 18 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 19 * 20 * Carnegie Mellon requests users of this software to return to 21 * 22 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 23 * School of Computer Science 24 * Carnegie Mellon University 25 * Pittsburgh PA 15213-3890 26 * 27 * any improvements or extensions that they make and grant Carnegie Mellon 28 * the rights to redistribute these changes. 29 */ 30 31 #ifndef _ARM_DB_MACHDEP_H_ 32 #define _ARM_DB_MACHDEP_H_ 33 34 /* 35 * Machine-dependent defines for new kernel debugger. 36 */ 37 38 #include <uvm/uvm_extern.h> 39 #include <arm/armreg.h> 40 #include <machine/frame.h> 41 #include <machine/trap.h> 42 43 /* end of mangling */ 44 45 typedef vaddr_t db_addr_t; /* address - unsigned */ 46 typedef long db_expr_t; /* expression - signed */ 47 48 typedef trapframe_t db_regs_t; 49 50 db_regs_t ddb_regs; /* register state */ 51 #define DDB_REGS (&ddb_regs) 52 53 #ifdef __PROG26 54 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_r15 & R15_PC) 55 #define PC_ADVANCE(regs) ((regs)->tf_r15 += 4) 56 #else 57 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_pc) 58 #endif 59 60 #define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */ 61 #define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */ 62 #define BKPT_SET(inst) (BKPT_INST) 63 64 /*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/ 65 66 #define T_BREAKPOINT (1) 67 68 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 69 #define IS_WATCHPOINT_TRAP(type, code) (0) 70 71 #define inst_trap_return(ins) (0) 72 /* ldmxx reg, {..., pc} 73 01800000 stack mode 74 000f0000 register 75 0000ffff register list */ 76 /* mov pc, reg 77 0000000f register */ 78 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 79 ((ins) & 0x0ff0fff0) == 0x01a0f000) 80 /* bl ... 81 00ffffff offset>>2 */ 82 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 83 /* b ... 84 00ffffff offset>>2 */ 85 /* ldr pc, [pc, reg, lsl #2] 86 0000000f register */ 87 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 88 ((ins) & 0x0fdffff0) == 0x079ff100) 89 #define inst_load(ins) (0) 90 #define inst_store(ins) (0) 91 #define inst_unconditional_flow_transfer(ins) \ 92 ((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \ 93 (inst_branch(ins) || inst_call(ins) || inst_return(ins))) 94 95 #define getreg_val (0) 96 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 97 98 #define DB_MACHINE_COMMANDS 99 100 #define SOFTWARE_SSTEP 101 102 u_int branch_taken __P((u_int insn, u_int pc, db_regs_t *db_regs)); 103 int kdb_trap __P((int, db_regs_t *)); 104 void db_machine_init __P((void)); 105 106 #ifdef __ELF__ 107 #define DB_ELF_SYMBOLS 108 #define DB_ELFSIZE 32 109 #else 110 #define DB_AOUT_SYMBOLS 111 #endif 112 113 #endif /* _ARM_DB_MACHDEP_H_ */ 114