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Annotation of Net2/arch/i386/include/db_machdep.h, revision 1.1

1.1     ! root        1: /* 
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1991,1990 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  * 
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  * 
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  * 
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  * 
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  * 
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  * HISTORY
        !            28:  * $Log: db_machdep.h,v $
        !            29:  * Revision 1.1.1.1  1993/03/21 09:45:47  cgd
        !            30:  * initial import of 386bsd-0.1 sources
        !            31:  *
        !            32:  * Revision 2.8  92/02/19  15:07:56  elf
        !            33:  *     Added db_thread_fp_used.
        !            34:  *     [92/02/19            rpd]
        !            35:  * 
        !            36:  * Revision 2.7  91/10/09  16:06:28  af
        !            37:  *      Revision 2.6.3.1  91/10/05  13:10:32  jeffreyh
        !            38:  *             Added access and task name macros.
        !            39:  *             [91/08/29            tak]
        !            40:  * 
        !            41:  * Revision 2.6.3.1  91/10/05  13:10:32  jeffreyh
        !            42:  *     Added access and task name macros.
        !            43:  *     [91/08/29            tak]
        !            44:  * 
        !            45:  * Revision 2.6  91/05/14  16:05:58  mrt
        !            46:  *     Correcting copyright
        !            47:  *
        !            48:  * Revision 2.5  91/02/05  17:11:17  mrt
        !            49:  *     Changed to new Mach copyright
        !            50:  *     [91/02/01  17:31:24  mrt]
        !            51:  * 
        !            52:  * Revision 2.4  91/01/08  15:10:16  rpd
        !            53:  *     Added dummy inst_load/inst_store macros.
        !            54:  *     [90/12/11            rpd]
        !            55:  * 
        !            56:  * Revision 2.3  90/10/25  14:44:49  rwd
        !            57:  *     Added watchpoint support.
        !            58:  *     [90/10/18            rpd]
        !            59:  * 
        !            60:  * Revision 2.2  90/08/27  21:56:15  dbg
        !            61:  *     Created.
        !            62:  *     [90/07/25            dbg]
        !            63:  * 
        !            64:  */
        !            65: 
        !            66: #ifndef        _I386_DB_MACHDEP_H_
        !            67: #define        _I386_DB_MACHDEP_H_
        !            68: 
        !            69: /*
        !            70:  * Machine-dependent defines for new kernel debugger.
        !            71:  */
        !            72: 
        !            73: 
        !            74: /* #include <mach/i386/vm_types.h> */
        !            75: /* #include <mach/i386/vm_param.h> */
        !            76: #include <vm/vm_prot.h>
        !            77: #include <vm/vm_param.h>
        !            78: #include <vm/vm_inherit.h>
        !            79: #include <vm/lock.h>
        !            80: /* #include <i386/thread.h> */         /* for thread_status */
        !            81: #include <machine/frame.h>     /* for struct trapframe */
        !            82: /* #include <i386/eflags.h> */
        !            83: #include <machine/eflags.h>            /* from Mach... */
        !            84: /* #include <i386/trap.h> */
        !            85: #include <machine/trap.h>
        !            86: 
        !            87: #define i386_saved_state trapframe
        !            88: /* end of mangling */
        !            89: 
        !            90: typedef        vm_offset_t     db_addr_t;      /* address - unsigned */
        !            91: typedef        int             db_expr_t;      /* expression - signed */
        !            92: 
        !            93: typedef struct i386_saved_state db_regs_t;
        !            94: db_regs_t      ddb_regs;       /* register state */
        !            95: #define        DDB_REGS        (&ddb_regs)
        !            96: 
        !            97: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_eip)
        !            98: 
        !            99: #define        BKPT_INST       0xcc            /* breakpoint instruction */
        !           100: #define        BKPT_SIZE       (1)             /* size of breakpoint inst */
        !           101: #define        BKPT_SET(inst)  (BKPT_INST)
        !           102: 
        !           103: #define        FIXUP_PC_AFTER_BREAK    ddb_regs.tf_eip -= 1;
        !           104: 
        !           105: #define        db_clear_single_step(regs)      ((regs)->tf_eflags &= ~EFL_TF)
        !           106: #define        db_set_single_step(regs)        ((regs)->tf_eflags |=  EFL_TF)
        !           107: 
        !           108: /* #define     IS_BREAKPOINT_TRAP(type, code)  ((type) == T_INT3) */
        !           109: /* #define IS_WATCHPOINT_TRAP(type, code)      ((type) == T_WATCHPOINT) */
        !           110: /* using the 386bsd values, rather than the Mach ones: */
        !           111: #define        IS_BREAKPOINT_TRAP(type, code)  ((type) == T_BPTFLT)
        !           112: #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_KDBTRAP)
        !           113: 
        !           114: #define        I_CALL          0xe8
        !           115: #define        I_CALLI         0xff
        !           116: #define        I_RET           0xc3
        !           117: #define        I_IRET          0xcf
        !           118: 
        !           119: #define        inst_trap_return(ins)   (((ins)&0xff) == I_IRET)
        !           120: #define        inst_return(ins)        (((ins)&0xff) == I_RET)
        !           121: #define        inst_call(ins)          (((ins)&0xff) == I_CALL || \
        !           122:                                 (((ins)&0xff) == I_CALLI && \
        !           123:                                  ((ins)&0x3800) == 0x1000))
        !           124: #define inst_load(ins)         0
        !           125: #define inst_store(ins)                0
        !           126: 
        !           127: /* access capability and access macros */
        !           128: 
        !           129: #define DB_ACCESS_LEVEL                2       /* access any space */
        !           130: #define DB_CHECK_ACCESS(addr,size,task)                                \
        !           131:        db_check_access(addr,size,task)
        !           132: #define DB_PHYS_EQ(task1,addr1,task2,addr2)                    \
        !           133:        db_phys_eq(task1,addr1,task2,addr2)
        !           134: #define DB_VALID_KERN_ADDR(addr)                               \
        !           135:        ((addr) >= VM_MIN_KERNEL_ADDRESS &&                     \
        !           136:         (addr) < VM_MAX_KERNEL_ADDRESS)
        !           137: #define DB_VALID_ADDRESS(addr,user)                            \
        !           138:        ((!(user) && DB_VALID_KERN_ADDR(addr)) ||               \
        !           139:         ((user) && (addr) < VM_MIN_KERNEL_ADDRESS))
        !           140: 
        !           141: boolean_t      db_check_access(/* vm_offset_t, int, task_t */);
        !           142: boolean_t      db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */);
        !           143: 
        !           144: /* macros for printing OS server dependent task name */
        !           145: 
        !           146: #define DB_TASK_NAME(task)     db_task_name(task)
        !           147: #define DB_TASK_NAME_TITLE     "COMMAND                "
        !           148: #define DB_TASK_NAME_LEN       23
        !           149: #define DB_NULL_TASK_NAME      "?                      "
        !           150: 
        !           151: void           db_task_name(/* task_t */);
        !           152: 
        !           153: /* macro for checking if a thread has used floating-point */
        !           154: 
        !           155: #define db_thread_fp_used(thread)      ((thread)->pcb->ims.ifps != 0)
        !           156: 
        !           157: #endif /* _I386_DB_MACHDEP_H_ */

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