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

1.1     ! nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.21 2005/12/17 07:31:26 miod Exp $    */
        !             2: /*     $NetBSD: db_machdep.h,v 1.13 1996/04/29 20:50:08 leo 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        _PPC_DB_MACHDEP_H_
        !            34: #define        _PPC_DB_MACHDEP_H_
        !            35:
        !            36: #include <sys/types.h>
        !            37: #include <uvm/uvm_param.h>
        !            38: #include <machine/trap.h>
        !            39:
        !            40: /*
        !            41:  * We use Elf32 symbols in DDB.
        !            42:  */
        !            43: #define        DB_ELF_SYMBOLS
        !            44: #define        DB_ELFSIZE      32
        !            45:
        !            46: typedef        vaddr_t db_addr_t;      /* address - unsigned */
        !            47: typedef        long            db_expr_t;      /* expression - signed */
        !            48: struct powerpc_saved_state {
        !            49:        struct trapframe tf;
        !            50: };
        !            51: typedef struct powerpc_saved_state db_regs_t;
        !            52: extern db_regs_t ddb_regs;             /* register state */
        !            53: #define DDB_REGS       (&ddb_regs)
        !            54:
        !            55: #define        PC_REGS(regs)   ((regs)->tf.srr0)
        !            56: #define        SET_PC_REGS(regs, value)        PC_REGS(regs) = (value)
        !            57:
        !            58: #define        BKPT_INST       0x7C810808      /* breakpoint instruction */
        !            59:
        !            60: #define        BKPT_SIZE       (4)             /* size of breakpoint inst */
        !            61: #define        BKPT_SET(inst)  (BKPT_INST)
        !            62:
        !            63: #define        FIXUP_PC_AFTER_BREAK(regs)      ((regs)->tf.srr0 -= 4)
        !            64:
        !            65: #define SR_SINGLESTEP 0x8000
        !            66: #define        db_clear_single_step(regs)      ((regs)->tf.srr1 &= ~SR_SINGLESTEP)
        !            67: #define        db_set_single_step(regs)        ((regs)->tf.srr1 |=  SR_SINGLESTEP)
        !            68:
        !            69: #define T_BREAKPOINT   0xffff
        !            70: #define        IS_BREAKPOINT_TRAP(type, code)  ((type) == T_BREAKPOINT)
        !            71:
        !            72: #ifdef T_WATCHPOINT
        !            73: #define        IS_WATCHPOINT_TRAP(type, code)  ((type) == T_WATCHPOINT)
        !            74: #else
        !            75: #define        IS_WATCHPOINT_TRAP(type, code)  0
        !            76: #endif
        !            77:
        !            78: #define        M_RTS           0xfc0007fe
        !            79: #define I_RTS          0x4c000020
        !            80: #define M_BC           0xfc000000
        !            81: #define I_BC           0x40000000
        !            82: #define M_B            0xfc000000
        !            83: #define I_B            0x50000000
        !            84: #define        M_RFI           0xfc0007fe
        !            85: #define        I_RFI           0x4c000064
        !            86:
        !            87: #define        inst_trap_return(ins)   (((ins)&M_RFI) == I_RFI)
        !            88: #define        inst_return(ins)        (((ins)&M_RTS) == I_RTS)
        !            89: #define        inst_call(ins)          (((ins)&M_BC ) == I_BC  || \
        !            90:                                 ((ins)&M_B  ) == I_B )
        !            91: #define inst_load(ins)         0
        !            92: #define inst_store(ins)                0
        !            93:
        !            94: #ifdef _KERNEL
        !            95:
        !            96: void   kdb_kintr(void *);
        !            97: int    kdb_trap(int, void *);
        !            98: void   db_save_regs(struct trapframe *frame);
        !            99: void   ddb_trap(void);
        !           100: db_expr_t db_dumpframe(u_int32_t pframe, int (*pr)(const char *, ...));
        !           101:
        !           102: #endif /* _KERNEL */
        !           103:
        !           104: #endif /* _PPC_DB_MACHDEP_H_ */