1 /* $OpenBSD: db_machdep.h,v 1.5 2005/04/19 15:23:34 miod Exp $ */ 2 /* $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1996 Scott K Stevens 6 * 7 * Mach Operating System 8 * Copyright (c) 1991,1990 Carnegie Mellon University 9 * All Rights Reserved. 10 * 11 * Permission to use, copy, modify and distribute this software and its 12 * documentation is hereby granted, provided that both the copyright 13 * notice and this permission notice appear in all copies of the 14 * software, derivative works or modified versions, and any portions 15 * thereof, and that both notices appear in supporting documentation. 16 * 17 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 18 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 19 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 20 * 21 * Carnegie Mellon requests users of this software to return to 22 * 23 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 24 * School of Computer Science 25 * Carnegie Mellon University 26 * Pittsburgh PA 15213-3890 27 * 28 * any improvements or extensions that they make and grant Carnegie Mellon 29 * the rights to redistribute these changes. 30 */ 31 32 #ifndef _ARM_DB_MACHDEP_H_ 33 #define _ARM_DB_MACHDEP_H_ 34 35 /* 36 * Machine-dependent defines for new kernel debugger. 37 */ 38 39 #include <uvm/uvm_extern.h> 40 #include <arm/armreg.h> 41 #include <machine/frame.h> 42 #include <machine/trap.h> 43 44 /* end of mangling */ 45 46 typedef vaddr_t db_addr_t; /* address - unsigned */ 47 typedef long db_expr_t; /* expression - signed */ 48 49 typedef trapframe_t db_regs_t; 50 51 extern db_regs_t ddb_regs; /* register state */ 52 #define DDB_REGS (&ddb_regs) 53 54 #ifdef __PROG26 55 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_r15 & R15_PC) 56 #define PC_ADVANCE(regs) ((regs)->tf_r15 += 4) 57 #else 58 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_pc) 59 #define SET_PC_REGS(regs, value) (regs)->tf_pc = (register_t)(value) 60 #endif 61 62 #define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */ 63 #define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */ 64 #define BKPT_SET(inst) (BKPT_INST) 65 66 /*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/ 67 68 #define T_BREAKPOINT (1) 69 70 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 71 #define IS_WATCHPOINT_TRAP(type, code) (0) 72 73 #define inst_trap_return(ins) (0) 74 /* ldmxx reg, {..., pc} 75 01800000 stack mode 76 000f0000 register 77 0000ffff register list */ 78 /* mov pc, reg 79 0000000f register */ 80 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 81 ((ins) & 0x0ff0fff0) == 0x01a0f000) 82 /* bl ... 83 00ffffff offset>>2 */ 84 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 85 /* b ... 86 00ffffff offset>>2 */ 87 /* ldr pc, [pc, reg, lsl #2] 88 0000000f register */ 89 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 90 ((ins) & 0x0fdffff0) == 0x079ff100) 91 #define inst_load(ins) (0) 92 #define inst_store(ins) (0) 93 #define inst_unconditional_flow_transfer(ins) \ 94 ((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \ 95 (inst_branch(ins) || inst_call(ins) || inst_return(ins))) 96 97 #define getreg_val (0) 98 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 99 100 #define DB_MACHINE_COMMANDS 101 102 #define SOFTWARE_SSTEP 103 104 db_addr_t db_branch_taken(u_int inst, db_addr_t pc, db_regs_t *regs); 105 int kdb_trap (int, db_regs_t *); 106 void db_machine_init (void); 107 108 #define branch_taken(ins, pc, fun, regs) \ 109 db_branch_taken((ins), (pc), (regs)) 110 111 #define DB_ELF_SYMBOLS 112 #define DB_ELFSIZE 32 113 114 void db_show_frame_cmd (db_expr_t, int, db_expr_t, char *); 115 116 #endif /* _ARM_DB_MACHDEP_H_ */ 117