1 /* $OpenBSD: db_machdep.h,v 1.13 2021/08/30 08:11:12 jasper 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 long db_expr_t; /* expression - signed */ 47 48 typedef trapframe_t db_regs_t; 49 50 extern db_regs_t ddb_regs; /* register state */ 51 52 #define PC_REGS(regs) ((vaddr_t)(regs)->tf_pc) 53 #define SET_PC_REGS(regs, value) (regs)->tf_pc = (register_t)(value) 54 55 #define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */ 56 #define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */ 57 #define BKPT_SET(inst) (BKPT_INST) 58 59 /*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/ 60 61 #define T_BREAKPOINT (1) 62 63 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 64 #define IS_WATCHPOINT_TRAP(type, code) (0) 65 66 #define inst_trap_return(ins) (0) 67 /* ldmxx reg, {..., pc} 68 01800000 stack mode 69 000f0000 register 70 0000ffff register list */ 71 /* mov pc, reg 72 0000000f register */ 73 #define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \ 74 ((ins) & 0x0ff0fff0) == 0x01a0f000) 75 /* bl ... 76 00ffffff offset>>2 */ 77 #define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000) 78 /* b ... 79 00ffffff offset>>2 */ 80 /* ldr pc, [pc, reg, lsl #2] 81 0000000f register */ 82 #define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \ 83 ((ins) & 0x0fdffff0) == 0x079ff100) 84 #define inst_unconditional_flow_transfer(ins) \ 85 ((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \ 86 (inst_branch(ins) || inst_call(ins) || inst_return(ins))) 87 88 #define getreg_val (0) 89 #define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE)) 90 91 #define DB_MACHINE_COMMANDS 92 93 #define SOFTWARE_SSTEP 94 95 vaddr_t db_branch_taken(u_int inst, vaddr_t pc, db_regs_t *regs); 96 int db_ktrap (int, db_regs_t *); 97 void db_machine_init (void); 98 99 #define branch_taken(ins, pc, fun, regs) \ 100 db_branch_taken((ins), (pc), (regs)) 101 102 void db_show_frame_cmd(db_expr_t, int, db_expr_t, char *); 103 104 #endif /* _ARM_DB_MACHDEP_H_ */ 105