sys/arch/sparc64/include/db_machdep.h

   1 /*      $NetBSD: db_machdep.h,v 1.25 2008/07/10 15:23:58 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_ */