1 /* $OpenBSD: db_machdep.h,v 1.32 2022/01/28 18:37:40 gkoehler Exp $*/ 2 /* $NetBSD: db_machdep.h,v 1.13 1996/04/29 20:50:08 leo Exp $ */ 3 4 /* 5 * Mach Operating System 6 * Copyright (c) 1992 Carnegie Mellon University 7 * All Rights Reserved. 8 * 9 * Permission to use, copy, modify and distribute this software and its 10 * documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 17 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie Mellon 27 * the rights to redistribute these changes. 28 */ 29 30 /* 31 * Machine-dependent defines for new kernel debugger. 32 */ 33 #ifndef _POWERPC_DB_MACHDEP_H_ 34 #define _POWERPC_DB_MACHDEP_H_ 35 36 #include <sys/types.h> 37 #include <uvm/uvm_param.h> 38 #include <machine/psl.h> 39 #include <machine/trap.h> 40 41 typedef long db_expr_t; /* expression - signed */ 42 typedef struct trapframe db_regs_t; 43 extern db_regs_t ddb_regs; /* register state */ 44 45 #define PC_REGS(regs) ((regs)->srr0) 46 #define SET_PC_REGS(regs, value) PC_REGS(regs) = (value) 47 48 #define BKPT_INST 0x7C810808 /* breakpoint instruction */ 49 50 #define BKPT_SIZE (4) /* size of breakpoint inst */ 51 #define BKPT_SET(inst) (BKPT_INST) 52 53 #define db_clear_single_step(regs) ((regs)->srr1 &= ~PSL_SE) 54 #define db_set_single_step(regs) ((regs)->srr1 |= PSL_SE) 55 56 #define T_BREAKPOINT 0xffff 57 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 58 59 #ifdef T_WATCHPOINT 60 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 61 #else 62 #define IS_WATCHPOINT_TRAP(type, code) 0 63 #endif 64 65 #define M_RTS 0xfc0007fe 66 #define I_RTS 0x4c000020 67 #define M_BC 0xfc000000 68 #define I_BC 0x40000000 69 #define M_B 0xfc000000 70 #define I_B 0x50000000 71 #define M_RFI 0xfc0007fe 72 #define I_RFI 0x4c000064 73 74 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) 75 #define inst_return(ins) (((ins)&M_RTS) == I_RTS) 76 #define inst_call(ins) (((ins)&M_BC ) == I_BC || \ 77 ((ins)&M_B ) == I_B ) 78 79 #ifdef _KERNEL 80 81 int db_enter_ddb(void); 82 void db_startcpu(int); 83 void db_stopcpu(int); 84 void ppc_ipi_db(struct cpu_info *); 85 86 void kdb_kintr(void *); 87 void db_save_regs(struct trapframe *frame); 88 void ddb_trap(void); 89 db_expr_t db_dumpframe(u_int32_t pframe, int (*pr)(const char *, ...)); 90 91 #define DDB_STATE_NOT_RUNNING 0 92 #define DDB_STATE_RUNNING 1 93 #define DDB_STATE_EXITING 2 94 95 /* 96 * We define some of our own commands 97 */ 98 #define DB_MACHINE_COMMANDS 99 100 #endif /* _KERNEL */ 101 102 #endif /* _POWERPC_DB_MACHDEP_H_ */ 103