db_machdep.h

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    1 /*
    2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
    3  *
    4  * @APPLE_LICENSE_HEADER_START@
    5  * 
    6  * The contents of this file constitute Original Code as defined in and
    7  * are subject to the Apple Public Source License Version 1.1 (the
    8  * "License").  You may not use this file except in compliance with the
    9  * License.  Please obtain a copy of the License at
   10  * http://www.apple.com/publicsource and read it before using this file.
   11  * 
   12  * This Original Code and all software distributed under the License are
   13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
   14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
   15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
   16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
   17  * License for the specific language governing rights and limitations
   18  * under the License.
   19  * 
   20  * @APPLE_LICENSE_HEADER_END@
   21  */
   22 /*
   23  * @OSF_COPYRIGHT@
   24  */
   25 /* 
   26  * Mach Operating System
   27  * Copyright (c) 1991,1990 Carnegie Mellon University
   28  * All Rights Reserved.
   29  * 
   30  * Permission to use, copy, modify and distribute this software and its
   31  * documentation is hereby granted, provided that both the copyright
   32  * notice and this permission notice appear in all copies of the
   33  * software, derivative works or modified versions, and any portions
   34  * thereof, and that both notices appear in supporting documentation.
   35  * 
   36  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   37  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   38  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   39  * 
   40  * Carnegie Mellon requests users of this software to return to
   41  * 
   42  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   43  *  School of Computer Science
   44  *  Carnegie Mellon University
   45  *  Pittsburgh PA 15213-3890
   46  * 
   47  * any improvements or extensions that they make and grant Carnegie Mellon
   48  * the rights to redistribute these changes.
   49  */
   50 /*
   51  */
   52 
   53 #ifndef _PPC_DB_MACHDEP_H_
   54 #define _PPC_DB_MACHDEP_H_
   55 
   56 /*
   57  * Machine-dependent defines for new kernel debugger.
   58  */
   59 
   60 #include <kern/kern_types.h>
   61 #include <mach/ppc/vm_types.h>
   62 #include <mach/ppc/vm_param.h>
   63 #include <kern/thread.h>
   64 #include <ppc/trap.h>
   65 #include <ppc/proc_reg.h>
   66 #include <ppc/savearea.h>
   67 
   68 typedef addr64_t db_addr_t;     /* address - unsigned */
   69 typedef uint64_t db_expr_t;     /* expression - signed???  try unsigned */
   70 
   71 typedef struct savearea db_regs_t;
   72 db_regs_t       ddb_regs;       /* register state */
   73 #define DDB_REGS        (&ddb_regs)
   74 extern int      db_active;      /* ddb is active */
   75 
   76 #define PC_REGS(regs)   ((db_addr_t)(regs)->save_srr0)
   77 
   78 #define BKPT_INST       0x7c810808      /* breakpoint instruction */
   79 #define BKPT_SIZE       (4)             /* size of breakpoint inst */
   80 #define BKPT_SET(inst)  (BKPT_INST)
   81 
   82 #define db_clear_single_step(regs)      ((regs)->save_srr1 &= ~MASK(MSR_SE))
   83 #define db_set_single_step(regs)        ((regs)->save_srr1 |= MASK(MSR_SE))
   84 
   85 #define IS_BREAKPOINT_TRAP(type, code)  (FALSE)
   86 #define IS_WATCHPOINT_TRAP(type, code)  (FALSE)
   87 
   88 #define inst_trap_return(ins)   (FALSE)
   89 #define inst_return(ins)        (FALSE)
   90 #define inst_call(ins)          (FALSE)
   91 
   92 int db_inst_load(unsigned long);
   93 int db_inst_store(unsigned long);
   94 
   95 /* access capability and access macros */
   96 
   97 #define DB_ACCESS_LEVEL DB_ACCESS_ANY   /* any space */
   98 #define DB_CHECK_ACCESS(addr,size,task)                         \
   99         db_check_access(addr,size,task)
  100 #define DB_PHYS_EQ(task1,addr1,task2,addr2)                     \
  101         db_phys_eq(task1,addr1,task2,addr2)
  102 #define DB_VALID_KERN_ADDR(addr)                                \
  103         ((addr) >= VM_MIN_KERNEL_ADDRESS &&                     \
  104          (addr) < vm_last_addr)
  105 #define DB_VALID_ADDRESS(addr,user)                             \
  106         ((!(user) && DB_VALID_KERN_ADDR(addr)) ||               \
  107          ((user) && (addr) < VM_MAX_ADDRESS))
  108 
  109 /*
  110  * Given pointer to savearea, determine if it represents
  111  * a thread executing a) in user space, b) in the kernel, or c)
  112  * in a kernel-loaded task.  Return true for cases a) and c).
  113  */
  114 #define IS_USER_TRAP(regs)      \
  115      (USER_MODE(regs->save_srr1))
  116 
  117 extern boolean_t        db_check_access(
  118                                 vm_offset_t     addr,
  119                                 int             size,
  120                                 task_t          task);
  121 extern boolean_t        db_phys_eq(
  122                                 task_t          task1,
  123                                 vm_offset_t     addr1,
  124                                 task_t          task2,
  125                                 vm_offset_t     addr2);
  126 extern db_addr_t        db_disasm(
  127                                 db_addr_t       loc,
  128                                 boolean_t       altfmt,
  129                                 task_t          task);
  130 extern void             db_read_bytes(
  131                                 vm_offset_t     addr,
  132                                 int             size,
  133                                 char            *data,
  134                                 task_t          task);
  135 extern void             db_write_bytes(
  136                                 vm_offset_t     addr,
  137                                 int             size,
  138                                 char            *data,
  139                                 task_t          task);
  140 extern void             db_stack_trace_cmd(
  141                                 db_expr_t       addr,
  142                                 boolean_t       have_addr,
  143                                 db_expr_t       count,
  144                                 char            *modif);
  145 extern void             db_reboot(
  146                                 db_expr_t       addr,
  147                                 boolean_t       have_addr,
  148                                 db_expr_t       count,
  149                                 char            *modif);
  150 extern void             db_low_trace(
  151                                 db_expr_t       addr,
  152                                 int             have_addr,
  153                                 db_expr_t       count,
  154                                 char            *modif);
  155 extern void             db_to_gdb(
  156                                 void);
  157 
  158 
  159 /* macros for printing OS server dependent task name */
  160 
  161 #define DB_TASK_NAME(task)      db_task_name(task)
  162 #define DB_TASK_NAME_TITLE      "COMMAND                                "
  163 #define DB_TASK_NAME_LEN        39
  164 #define DB_NULL_TASK_NAME       "?                      "
  165 
  166 extern void             db_task_name(
  167                                 task_t                  task);
  168 
  169 /* macro for checking if a thread has used floating-point */
  170 
  171 #define db_act_fp_used(act)     (FALSE)
  172 
  173 extern void             kdb_trap(
  174                                 int                     type,
  175                                 struct savearea *regs);
  176 extern boolean_t        db_trap_from_asm(
  177                                 struct savearea *regs);
  178 extern void             kdb_on(
  179                                 int                     cpu);
  180 extern void             cnpollc(
  181                                 boolean_t               on);
  182 
  183 extern boolean_t        db_phys_cmp(
  184                                 vm_offset_t, 
  185                                 vm_offset_t, 
  186                                 vm_size_t);
  187 
  188 #endif  /* _PPC_DB_MACHDEP_H_ */

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FreeBSD/Linux Kernel Cross Reference sys/osfmk/ppc/db_machdep.h

FreeBSD/Linux Kernel Cross Reference
sys/osfmk/ppc/db_machdep.h