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Annotation of sys/arch/m88k/include/db_machdep.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.12 2007/01/13 22:00:56 miod Exp $ */
                      2: /*
                      3:  * Mach Operating System
                      4:  * Copyright (c) 1993-1991 Carnegie Mellon University
                      5:  * Copyright (c) 1991 OMRON Corporation
                      6:  * All Rights Reserved.
                      7:  *
                      8:  * Permission to use, copy, modify and distribute this software and its
                      9:  * documentation is hereby granted, provided that both the copyright
                     10:  * notice and this permission notice appear in all copies of the
                     11:  * software, derivative works or modified versions, and any portions
                     12:  * thereof, and that both notices appear in supporting documentation.
                     13:  *
                     14:  * CARNEGIE MELLON AND OMRON ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS IS"
                     15:  * CONDITION.  CARNEGIE MELLON AND OMRON DISCLAIM ANY LIABILITY OF ANY KIND
                     16:  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     17:  *
                     18:  * Carnegie Mellon requests users of this software to return to
                     19:  *
                     20:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
                     21:  *  School of Computer Science
                     22:  *  Carnegie Mellon University
                     23:  *  Pittsburgh PA 15213-3890
                     24:  *
                     25:  * any improvements or extensions that they make and grant Carnegie the
                     26:  * rights to redistribute these changes.
                     27:  */
                     28:
                     29: #ifndef  _M88K_DB_MACHDEP_H_
                     30: #define  _M88K_DB_MACHDEP_H_
                     31:
                     32: /* trap numbers used by ddb */
                     33: #define        DDB_ENTRY_BKPT_NO       130
                     34: #define        DDB_ENTRY_TRACE_NO      131
                     35: #define DDB_ENTRY_TRAP_NO      132
                     36:
                     37: #ifndef        _LOCORE
                     38:
                     39: #include <machine/reg.h>
                     40: #include <machine/trap.h>
                     41:
                     42: #include <uvm/uvm_param.h>
                     43:
                     44: #define        SET_PC_REGS(regs, value)                                        \
                     45: do {                                                                   \
                     46:        (regs)->sxip = (value);                                         \
                     47:        (regs)->snip = (value) + 4;                                     \
                     48: } while (0)
                     49:
                     50: #ifdef DDB
                     51:
                     52: #define BKPT_SIZE      (4)     /* number of bytes in bkpt inst. */
                     53: #define BKPT_INST      (0xf000d000 | DDB_ENTRY_BKPT_NO) /* tb0, 0,r0, 130 */
                     54: #define BKPT_SET(inst) (BKPT_INST)
                     55:
                     56: /* Entry trap for the debugger - used for inline assembly breaks*/
                     57: #define ENTRY_ASM              "tb0 0, r0, 132"
                     58:
                     59: typedef        vaddr_t         db_addr_t;
                     60: typedef        long            db_expr_t;
                     61: typedef        struct reg      db_regs_t;
                     62: extern db_regs_t       ddb_regs;       /* register state */
                     63: #define        DDB_REGS        (&ddb_regs)
                     64:
                     65: int    inst_load(u_int);
                     66: int    inst_store(u_int);
                     67: int    ddb_break_trap(int, db_regs_t *);
                     68: int    ddb_entry_trap(int, db_regs_t *);
                     69: void   m88k_print_instruction(int, u_int, u_int32_t);  /* db_disasm.c */
                     70:
                     71: /*
                     72:  * inst_call(ins) - is the instruction a function call.
                     73:  * Could be either bsr or jsr.
                     74:  */
                     75: #define        inst_call(I) \
                     76:        (((I) & 0xf8000000) == 0xc8000000 /* bsr */ || \
                     77:         ((I) & 0xfffffbe0) == 0xf400c800 /* jsr */)
                     78: /*
                     79:  * inst_return(ins) - is the instruction a function call return.
                     80:  * Not mutually exclusive with inst_branch. Should be a jmp r1.
                     81:  */
                     82: #define        inst_return(I)  (((I) & 0xfffffbff) == 0xf400c001)
                     83:
                     84: /*
                     85:  * inst_trap_return(ins) - is the instruction a return from trap.
                     86:  * Should be a rte.
                     87:  */
                     88: #define        inst_trap_return(I)     ((I) == 0xf400c000)
                     89:
                     90: /* breakpoint/watchpoint foo */
                     91: #define IS_BREAKPOINT_TRAP(type,code) ((type)==T_KDB_BREAK)
                     92: #define IS_WATCHPOINT_TRAP(type,code) 0
                     93:
                     94: /* machine specific commands have been added to ddb */
                     95: #define DB_MACHINE_COMMANDS
                     96:
                     97: #define        DB_AOUT_SYMBOLS
                     98:
                     99: #endif /* DDB */
                    100: #endif /* _LOCORE */
                    101:
                    102: #endif /* _M88K_DB_MACHDEP_H_ */