sys/arch/sparc/include/db_machdep.h

   1 /*      $NetBSD: db_machdep.h,v 1.22 2006/04/01 15:45:00 cherry 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 _SPARC_DB_MACHDEP_H_
  30 #define _SPARC_DB_MACHDEP_H_
  31
  32 /*
  33  * Machine-dependent defines for new kernel debugger.
  34  */
  35 #include <uvm/uvm_extern.h>
  36 #include <machine/frame.h>
  37 #include <machine/psl.h>
  38 #include <machine/trap.h>
  39 #include <machine/reg.h>
  40
  41 typedef vaddr_t         db_addr_t;      /* address - unsigned */
  42 typedef long            db_expr_t;      /* expression - signed */
  43
  44 typedef struct {
  45         struct trapframe db_tf;
  46         struct frame     db_fr;
  47 } db_regs_t;
  48
  49 /* Current CPU register state */
  50 extern struct cpu_info *ddb_cpuinfo;
  51 extern db_regs_t        *ddb_regp;
  52 #define DDB_REGS        ddb_regp
  53 #define DDB_TF          (&ddb_regp->db_tf)
  54 #define DDB_FR          (&ddb_regp->db_fr)
  55
  56
  57 #if defined(lint)
  58 #define PC_REGS(regs)   ((regs)->db_tf.tf_pc)
  59 #else
  60 #define PC_REGS(regs)   ((db_addr_t)(regs)->db_tf.tf_pc)
  61 #endif
  62 #define PC_ADVANCE(regs) do {                           \
  63         int n = (regs)->db_tf.tf_npc;                   \
  64         (regs)->db_tf.tf_pc = n;                        \
  65         (regs)->db_tf.tf_npc = n + 4;                   \
  66 } while(0)
  67
  68 #define BKPT_ADDR(addr) (addr)          /* breakpoint address */
  69 #define BKPT_INST       0x91d02001      /* breakpoint instruction */
  70 #define BKPT_SIZE       (4)             /* size of breakpoint inst */
  71 #define BKPT_SET(inst, addr)    (BKPT_INST)
  72
  73 #define IS_BREAKPOINT_TRAP(type, code)  \
  74         ((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC)
  75 #define IS_WATCHPOINT_TRAP(type, code)  (0)
  76
  77 /*
  78  * Sparc cpus have no hardware single-step.
  79  */
  80 #define SOFTWARE_SSTEP
  81
  82 bool            db_inst_trap_return(int inst);
  83 bool            db_inst_return(int inst);
  84 bool            db_inst_call(int inst);
  85 bool            db_inst_branch(int inst);
  86 int             db_inst_load(int inst);
  87 int             db_inst_store(int inst);
  88 bool            db_inst_unconditional_flow_transfer(int inst);
  89 db_addr_t       db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs);
  90
  91 #define inst_trap_return(ins)   db_inst_trap_return(ins)
  92 #define inst_return(ins)        db_inst_return(ins)
  93 #define inst_call(ins)          db_inst_call(ins)
  94 #define inst_branch(ins)        db_inst_branch(ins)
  95 #define inst_load(ins)          db_inst_load(ins)
  96 #define inst_store(ins)         db_inst_store(ins)
  97 #define inst_unconditional_flow_transfer(ins) \
  98                                 db_inst_unconditional_flow_transfer(ins)
  99 #define branch_taken(ins, pc, regs) \
 100                                 db_branch_taken((ins), (pc), (regs))
 101
 102 /* see note in db_interface.c about reversed breakpoint addrs */
 103 #define next_instr_address(pc, bd) \
 104         ((bd) ? (pc) : ddb_regp->db_tf.tf_npc)
 105
 106
 107
 108 #define DB_MACHINE_COMMANDS
 109
 110 int kdb_trap(int, struct trapframe *);
 111
 112 /*
 113  * We use both a.out and elf symbols in DDB.
 114  */
 115 #define DB_AOUT_SYMBOLS
 116 #define DB_ELF_SYMBOLS
 117 #define DB_ELFSIZE 32
 118
 119
 120 /*
 121  * KGDB definitions
 122  */
 123 typedef u_long          kgdb_reg_t;
 124 #define KGDB_NUMREGS    72
 125 #define KGDB_BUFLEN     1024
 126
 127 #endif  /* _SPARC_DB_MACHDEP_H_ */