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Annotation of sys/arch/i386/include/db_machdep.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.17 2006/11/29 22:40:13 miod Exp $    */
        !             2: /*     $NetBSD: db_machdep.h,v 1.9 1996/05/03 19:23:59 christos Exp $  */
        !             3:
        !             4: /*
        !             5:  * Mach Operating System
        !             6:  * Copyright (c) 1991,1990 Carnegie Mellon University
        !             7:  * All Rights Reserved.
        !             8:  *
        !             9:  * Permission to use, copy, modify and distribute this software and its
        !            10:  * documentation is hereby granted, provided that both the copyright
        !            11:  * notice and this permission notice appear in all copies of the
        !            12:  * software, derivative works or modified versions, and any portions
        !            13:  * thereof, and that both notices appear in supporting documentation.
        !            14:  *
        !            15:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            16:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            17:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            18:  *
        !            19:  * Carnegie Mellon requests users of this software to return to
        !            20:  *
        !            21:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            22:  *  School of Computer Science
        !            23:  *  Carnegie Mellon University
        !            24:  *  Pittsburgh PA 15213-3890
        !            25:  *
        !            26:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            27:  * the rights to redistribute these changes.
        !            28:  */
        !            29:
        !            30: #ifndef        _I386_DB_MACHDEP_H_
        !            31: #define        _I386_DB_MACHDEP_H_
        !            32:
        !            33: /*
        !            34:  * Machine-dependent defines for new kernel debugger.
        !            35:  */
        !            36:
        !            37: #include <sys/param.h>
        !            38: #include <uvm/uvm_extern.h>
        !            39: #include <machine/trap.h>
        !            40:
        !            41: typedef        vaddr_t         db_addr_t;      /* address - unsigned */
        !            42: typedef        long            db_expr_t;      /* expression - signed */
        !            43:
        !            44: typedef struct trapframe db_regs_t;
        !            45: extern db_regs_t       ddb_regs;       /* register state */
        !            46: #define        DDB_REGS        (&ddb_regs)
        !            47:
        !            48: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_eip)
        !            49: #define        SET_PC_REGS(regs, value) (regs)->tf_eip = (int)(value)
        !            50:
        !            51: #define        BKPT_INST       0xcc            /* breakpoint instruction */
        !            52: #define        BKPT_SIZE       (1)             /* size of breakpoint inst */
        !            53: #define        BKPT_SET(inst)  (BKPT_INST)
        !            54:
        !            55: #define        FIXUP_PC_AFTER_BREAK(regs)      ((regs)->tf_eip -= BKPT_SIZE)
        !            56:
        !            57: #define        db_clear_single_step(regs)      ((regs)->tf_eflags &= ~PSL_T)
        !            58: #define        db_set_single_step(regs)        ((regs)->tf_eflags |=  PSL_T)
        !            59:
        !            60: #define        IS_BREAKPOINT_TRAP(type, code)  ((type) == T_BPTFLT)
        !            61: #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP && (code) & 15)
        !            62:
        !            63: #define        I_CALL          0xe8
        !            64: #define        I_CALLI         0xff
        !            65: #define        I_RET           0xc3
        !            66: #define        I_IRET          0xcf
        !            67:
        !            68: #define        inst_trap_return(ins)   (((ins)&0xff) == I_IRET)
        !            69: #define        inst_return(ins)        (((ins)&0xff) == I_RET)
        !            70: #define        inst_call(ins)          (((ins)&0xff) == I_CALL || \
        !            71:                                 (((ins)&0xff) == I_CALLI && \
        !            72:                                  ((ins)&0x3800) == 0x1000))
        !            73: #define inst_load(ins)         0
        !            74: #define inst_store(ins)                0
        !            75:
        !            76: #define DB_MACHINE_COMMANDS
        !            77:
        !            78: /* macros for printing OS server dependent task name */
        !            79:
        !            80: #define DB_TASK_NAME(task)     db_task_name(task)
        !            81: #define DB_TASK_NAME_TITLE     "COMMAND                "
        !            82: #define DB_TASK_NAME_LEN       23
        !            83: #define DB_NULL_TASK_NAME      "?                      "
        !            84: #define DB_ELF_SYMBOLS
        !            85: #define DB_ELFSIZE             32
        !            86:
        !            87: /*
        !            88:  * Constants for KGDB.
        !            89:  */
        !            90: typedef        long            kgdb_reg_t;
        !            91: #define        KGDB_NUMREGS    16
        !            92: #define        KGDB_BUFLEN     512
        !            93:
        !            94: #define KGDB_ENTER     breakpoint()
        !            95:
        !            96: #if 0
        !            97: void           db_task_name(/* task_t */);
        !            98: #endif
        !            99:
        !           100: /* macro for checking if a thread has used floating-point */
        !           101:
        !           102: #define db_thread_fp_used(thread)      ((thread)->pcb->ims.ifps != 0)
        !           103:
        !           104: int kdb_trap(int, int, db_regs_t *);
        !           105:
        !           106: void db_machine_init(void);
        !           107: int db_enter_ddb(void);
        !           108: void db_startcpu(int cpu);
        !           109: void db_stopcpu(int cpu);
        !           110: void i386_ipi_db(struct cpu_info *);
        !           111:
        !           112: extern struct mutex ddb_mp_mutex;
        !           113:
        !           114: /* For ddb_state */
        !           115: #define DDB_STATE_NOT_RUNNING  0
        !           116: #define DDB_STATE_RUNNING      1
        !           117: #define DDB_STATE_EXITING      2
        !           118:
        !           119: #endif /* _I386_DB_MACHDEP_H_ */