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Annotation of sys/arch/m68k/include/db_machdep.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.10 2005/11/13 17:50:44 fgsch Exp $   */
                      2: /*     $NetBSD: db_machdep.h,v 1.20 1997/06/26 01:26:58 thorpej Exp $  */
                      3:
                      4: /*
                      5:  * Mach Operating System
                      6:  * Copyright (c) 1992 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: /*
                     31:  * Machine-dependent defines for new kernel debugger.
                     32:  */
                     33: #ifndef        _M68K_DB_MACHDEP_H_
                     34: #define        _M68K_DB_MACHDEP_H_
                     35:
                     36: #include <sys/types.h>
                     37:
                     38: /*
                     39:  * XXX - Would rather not pull in vm headers, but need boolean_t,
                     40:  * at least until boolean_t moves to <sys/types.h> or someplace.
                     41:  */
                     42: #include <uvm/uvm_param.h>
                     43:
                     44: #include <machine/frame.h>
                     45: #include <machine/psl.h>
                     46: #include <machine/trap.h>
                     47:
                     48: typedef        vaddr_t         db_addr_t;      /* address - unsigned */
                     49: typedef        long            db_expr_t;      /* expression - signed */
                     50: typedef struct trapframe db_regs_t;
                     51:
                     52: extern db_regs_t       ddb_regs;       /* register state */
                     53: #define DDB_REGS       (&ddb_regs)
                     54:
                     55: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_pc)
                     56: #define        SET_PC_REGS(regs, value)        (regs)->tf_pc = (unsigned int)(value)
                     57:
                     58: #define        BKPT_INST       0x4e4f          /* breakpoint instruction */
                     59: #define        BKPT_SIZE       (2)             /* size of breakpoint inst */
                     60: #define        BKPT_SET(inst)  (BKPT_INST)
                     61:
                     62: #define        FIXUP_PC_AFTER_BREAK(regs)      ((regs)->tf_pc -= BKPT_SIZE)
                     63:
                     64: #define        db_clear_single_step(regs)      ((regs)->tf_sr &= ~PSL_T)
                     65: #define        db_set_single_step(regs)        ((regs)->tf_sr |=  PSL_T)
                     66:
                     67: #define        IS_BREAKPOINT_TRAP(type, code)  ((type) == T_BREAKPOINT)
                     68: #ifdef T_WATCHPOINT
                     69: #define        IS_WATCHPOINT_TRAP(type, code)  ((type) == T_WATCHPOINT)
                     70: #else
                     71: #define        IS_WATCHPOINT_TRAP(type, code)  0
                     72: #endif
                     73:
                     74: #define        M_RTS           0xffff0000
                     75: #define I_RTS          0x4e750000
                     76: #define M_JSR          0xffc00000
                     77: #define I_JSR          0x4e800000
                     78: #define M_BSR          0xff000000
                     79: #define I_BSR          0x61000000
                     80: #define        M_RTE           0xffff0000
                     81: #define        I_RTE           0x4e730000
                     82:
                     83: #define        inst_trap_return(ins)   (((ins)&M_RTE) == I_RTE)
                     84: #define        inst_return(ins)        (((ins)&M_RTS) == I_RTS)
                     85: #define        inst_call(ins)          (((ins)&M_JSR) == I_JSR || \
                     86:                                 ((ins)&M_BSR) == I_BSR)
                     87: #define inst_load(ins)         0
                     88: #define inst_store(ins)                0
                     89:
                     90: /*
                     91:  * Things needed by kgdb:
                     92:  */
                     93: typedef long kgdb_reg_t;
                     94: #define KGDB_NUMREGS   (16+2)
                     95: #define KGDB_BUFLEN    512
                     96:
                     97: #ifdef _KERNEL
                     98:
                     99: #define KGDB_ENTER     __asm __volatile("trap  #15")
                    100:
                    101: void   Debugger(void); /* XXX */
                    102: void   kdb_kintr(db_regs_t *);
                    103: int    kdb_trap(int, db_regs_t *);
                    104:
                    105: #endif /* _KERNEL */
                    106:
                    107: /*
                    108:  * We use a.out symbols in DDB.
                    109:  */
                    110: #define        DB_AOUT_SYMBOLS
                    111:
                    112: #endif /* _M68K_DB_MACHDEP_H_ */