1 /* $NetBSD: db_machdep.h,v 1.26 2008/11/25 15:41:11 nakayama Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 */ 28 29 #ifndef _SPARC64_DB_MACHDEP_H_ 30 #define _SPARC64_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 */ 35 36 #include <uvm/uvm_extern.h> 37 38 #include <machine/frame.h> 39 #include <machine/psl.h> 40 #include <machine/trap.h> 41 #include <machine/reg.h> 42 43 44 /* use 64-bit types explicitly for 32-bit kernels */ 45 typedef vaddr_t db_addr_t; /* address - unsigned */ 46 typedef int64_t db_expr_t; /* expression - signed */ 47 48 struct trapstate { 49 int64_t tstate; 50 int64_t tpc; 51 int64_t tnpc; 52 int64_t tt; 53 }; 54 55 typedef struct { 56 struct trapframe64 db_tf; 57 struct frame64 db_fr; 58 struct trapstate db_ts[5]; 59 int db_tl; 60 struct fpstate64 db_fpstate __aligned(BLOCK_SIZE); 61 } db_regs_t; 62 63 /* Current CPU register state */ 64 #define DDB_REGS ((db_regs_t*)__UNVOLATILE(curcpu()->ci_ddb_regs)) 65 #define DDB_TF (&DDB_REGS->db_tf) 66 #define DDB_FP (&DDB_REGS->db_fpstate) 67 68 /* DDB commands not in db_interface.c */ 69 void db_dump_ts(db_expr_t, bool, db_expr_t, const char *); 70 void db_dump_trap(db_expr_t, bool, db_expr_t, const char *); 71 void db_dump_fpstate(db_expr_t, bool, db_expr_t, const char *); 72 void db_dump_window(db_expr_t, bool, db_expr_t, const char *); 73 void db_dump_stack(db_expr_t, bool, db_expr_t, const char *); 74 75 #define PC_REGS(regs) ((regs)->db_tf.tf_pc) 76 #define PC_ADVANCE(regs) do { \ 77 vaddr_t n = (regs)->db_tf.tf_npc; \ 78 (regs)->db_tf.tf_pc = n; \ 79 (regs)->db_tf.tf_npc = n + 4; \ 80 } while(0) 81 82 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 83 #define BKPT_INST 0x91d02001 /* breakpoint instruction */ 84 #define BKPT_SIZE (4) /* size of breakpoint inst */ 85 #define BKPT_SET(inst, addr) (BKPT_INST) 86 87 #define IS_BREAKPOINT_TRAP(type, code) \ 88 ((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC) 89 #define IS_WATCHPOINT_TRAP(type, code) \ 90 ((type) ==T_PA_WATCHPT || (type) == T_VA_WATCHPT) 91 92 /* 93 * Sparc cpus have no hardware single-step. 94 */ 95 #define SOFTWARE_SSTEP 96 97 bool db_inst_trap_return(int inst); 98 bool db_inst_return(int inst); 99 bool db_inst_call(int inst); 100 bool db_inst_branch(int inst); 101 int db_inst_load(int inst); 102 int db_inst_store(int inst); 103 bool db_inst_unconditional_flow_transfer(int inst); 104 db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); 105 106 #define inst_trap_return(ins) db_inst_trap_return(ins) 107 #define inst_return(ins) db_inst_return(ins) 108 #define inst_call(ins) db_inst_call(ins) 109 #define inst_branch(ins) db_inst_branch(ins) 110 #define inst_load(ins) db_inst_load(ins) 111 #define inst_store(ins) db_inst_store(ins) 112 #define inst_unconditional_flow_transfer(ins) \ 113 db_inst_unconditional_flow_transfer(ins) 114 #define branch_taken(ins, pc, regs) \ 115 db_branch_taken((ins), (pc), (regs)) 116 117 /* see note in db_interface.c about reversed breakpoint addrs */ 118 #define next_instr_address(pc, bd) \ 119 ((bd) ? (pc) : DDB_REGS->db_tf.tf_npc) 120 121 #define DB_MACHINE_COMMANDS 122 123 int kdb_trap(int, struct trapframe64 *); 124 125 /* 126 * We will use elf symbols in DDB when they work. 127 */ 128 #if 1 129 #define DB_ELF_SYMBOLS 130 #ifdef __arch64__ 131 #define DB_ELFSIZE 64 132 #else 133 #define DB_ELFSIZE 32 134 #endif 135 #else 136 #define DB_AOUT_SYMBOLS 137 #endif 138 /* 139 * KGDB definitions 140 */ 141 typedef u_long kgdb_reg_t; 142 #define KGDB_NUMREGS 125 143 #define KGDB_BUFLEN 2048 144 145 #endif /* _SPARC64_DB_MACHDEP_H_ */ 146