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Annotation of sys/arch/i386/include/db_machdep.h, Revision 1.1.1.1

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_ */