1 /* $OpenBSD: db_machdep.h,v 1.13 2001/08/15 13:36:45 miod 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 _PPC_DB_MACHDEP_H_ 34 #define _PPC_DB_MACHDEP_H_ 35 36 #include <sys/types.h> 37 #include <vm/vm_param.h> 38 #include <machine/trap.h> 39 40 #define DB_MACHINE_COMMANDS 41 42 /* 43 * We use Elf64 symbols in DDB. 44 */ 45 #define DB_ELF_SYMBOLS 46 #define DB_ELFSIZE 32 47 48 typedef vm_offset_t db_addr_t; /* address - unsigned */ 49 typedef int db_expr_t; /* expression - signed */ 50 struct powerpc_saved_state { 51 struct trapframe tf; 52 }; 53 typedef struct powerpc_saved_state db_regs_t; 54 db_regs_t ddb_regs; /* register state */ 55 #define DDB_REGS (&ddb_regs) 56 57 #define PC_REGS(regs) ((regs)->tf.srr0) 58 59 #define BKPT_INST 0x7C810808 /* breakpoint instruction */ 60 61 #define BKPT_SIZE (4) /* size of breakpoint inst */ 62 #define BKPT_SET(inst) (BKPT_INST) 63 64 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf.srr0 -= 4) 65 66 #define SR_SINGLESTEP 0x8000 67 #define db_clear_single_step(regs) ((regs)->tf.srr1 &= ~SR_SINGLESTEP) 68 #define db_set_single_step(regs) ((regs)->tf.srr1 |= SR_SINGLESTEP) 69 70 #define T_BREAKPOINT 0xffff 71 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 72 73 #ifdef T_WATCHPOINT 74 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 75 #else 76 #define IS_WATCHPOINT_TRAP(type, code) 0 77 #endif 78 79 #define M_RTS 0xfc0007fe 80 #define I_RTS 0x4c000020 81 #define M_BC 0xfc000000 82 #define I_BC 0x40000000 83 #define M_B 0xfc000000 84 #define I_B 0x50000000 85 #define M_RFI 0xfc0007fe 86 #define I_RFI 0x4c000064 87 88 #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI) 89 #define inst_return(ins) (((ins)&M_RTS) == I_RTS) 90 #define inst_call(ins) (((ins)&M_BC ) == I_BC || \ 91 ((ins)&M_B ) == I_B ) 92 #define inst_load(ins) 0 93 #define inst_store(ins) 0 94 95 #ifdef _KERNEL 96 97 void kdb_kintr __P((void *)); 98 int kdb_trap __P((int, void *)); 99 void db_save_regs(struct trapframe *frame); 100 void ddb_trap __P((void)); 101 db_expr_t db_dumpframe __P((u_int32_t pframe)); 102 103 #endif /* _KERNEL */ 104 105 #endif /* _PPC_DB_MACHDEP_H_ */ 106