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

1.1     ! nbrk        1: /*     $OpenBSD: db_machdep.h,v 1.5 2005/04/19 15:23:34 miod Exp $     */
        !             2: /*     $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $   */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1996 Scott K Stevens
        !             6:  *
        !             7:  * Mach Operating System
        !             8:  * Copyright (c) 1991,1990 Carnegie Mellon University
        !             9:  * All Rights Reserved.
        !            10:  *
        !            11:  * Permission to use, copy, modify and distribute this software and its
        !            12:  * documentation is hereby granted, provided that both the copyright
        !            13:  * notice and this permission notice appear in all copies of the
        !            14:  * software, derivative works or modified versions, and any portions
        !            15:  * thereof, and that both notices appear in supporting documentation.
        !            16:  *
        !            17:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            18:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            19:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            20:  *
        !            21:  * Carnegie Mellon requests users of this software to return to
        !            22:  *
        !            23:  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
        !            24:  *  School of Computer Science
        !            25:  *  Carnegie Mellon University
        !            26:  *  Pittsburgh PA 15213-3890
        !            27:  *
        !            28:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            29:  * the rights to redistribute these changes.
        !            30:  */
        !            31:
        !            32: #ifndef        _ARM_DB_MACHDEP_H_
        !            33: #define        _ARM_DB_MACHDEP_H_
        !            34:
        !            35: /*
        !            36:  * Machine-dependent defines for new kernel debugger.
        !            37:  */
        !            38:
        !            39: #include <uvm/uvm_extern.h>
        !            40: #include <arm/armreg.h>
        !            41: #include <machine/frame.h>
        !            42: #include <machine/trap.h>
        !            43:
        !            44: /* end of mangling */
        !            45:
        !            46: typedef        vaddr_t         db_addr_t;      /* address - unsigned */
        !            47: typedef        long            db_expr_t;      /* expression - signed */
        !            48:
        !            49: typedef trapframe_t db_regs_t;
        !            50:
        !            51: extern db_regs_t               ddb_regs;       /* register state */
        !            52: #define        DDB_REGS        (&ddb_regs)
        !            53:
        !            54: #ifdef __PROG26
        !            55: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_r15 & R15_PC)
        !            56: #define PC_ADVANCE(regs) ((regs)->tf_r15 += 4)
        !            57: #else
        !            58: #define        PC_REGS(regs)   ((db_addr_t)(regs)->tf_pc)
        !            59: #define        SET_PC_REGS(regs, value)        (regs)->tf_pc = (register_t)(value)
        !            60: #endif
        !            61:
        !            62: #define        BKPT_INST       (KERNEL_BREAKPOINT)     /* breakpoint instruction */
        !            63: #define        BKPT_SIZE       (INSN_SIZE)             /* size of breakpoint inst */
        !            64: #define        BKPT_SET(inst)  (BKPT_INST)
        !            65:
        !            66: /*#define FIXUP_PC_AFTER_BREAK(regs)   ((regs)->tf_pc -= BKPT_SIZE)*/
        !            67:
        !            68: #define T_BREAKPOINT                   (1)
        !            69:
        !            70: #define        IS_BREAKPOINT_TRAP(type, code)  ((type) == T_BREAKPOINT)
        !            71: #define IS_WATCHPOINT_TRAP(type, code) (0)
        !            72:
        !            73: #define        inst_trap_return(ins)   (0)
        !            74: /* ldmxx reg, {..., pc}
        !            75:                                            01800000  stack mode
        !            76:                                            000f0000  register
        !            77:                                            0000ffff  register list */
        !            78: /* mov pc, reg
        !            79:                                            0000000f  register */
        !            80: #define        inst_return(ins)        (((ins) & 0x0e108000) == 0x08108000 || \
        !            81:                                 ((ins) & 0x0ff0fff0) == 0x01a0f000)
        !            82: /* bl ...
        !            83:                                            00ffffff  offset>>2 */
        !            84: #define        inst_call(ins)          (((ins) & 0x0f000000) == 0x0b000000)
        !            85: /* b ...
        !            86:                                            00ffffff  offset>>2 */
        !            87: /* ldr pc, [pc, reg, lsl #2]
        !            88:                                            0000000f  register */
        !            89: #define        inst_branch(ins)        (((ins) & 0x0f000000) == 0x0a000000 || \
        !            90:                                 ((ins) & 0x0fdffff0) == 0x079ff100)
        !            91: #define inst_load(ins)         (0)
        !            92: #define inst_store(ins)                (0)
        !            93: #define inst_unconditional_flow_transfer(ins)  \
        !            94:        ((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \
        !            95:         (inst_branch(ins) || inst_call(ins) || inst_return(ins)))
        !            96:
        !            97: #define getreg_val                     (0)
        !            98: #define next_instr_address(pc, bd)     ((bd) ? (pc) : ((pc) + INSN_SIZE))
        !            99:
        !           100: #define DB_MACHINE_COMMANDS
        !           101:
        !           102: #define SOFTWARE_SSTEP
        !           103:
        !           104: db_addr_t      db_branch_taken(u_int inst, db_addr_t pc, db_regs_t *regs);
        !           105: int kdb_trap (int, db_regs_t *);
        !           106: void db_machine_init (void);
        !           107:
        !           108: #define branch_taken(ins, pc, fun, regs) \
        !           109:                                db_branch_taken((ins), (pc), (regs))
        !           110:
        !           111: #define DB_ELF_SYMBOLS
        !           112: #define DB_ELFSIZE 32
        !           113:
        !           114: void db_show_frame_cmd (db_expr_t, int, db_expr_t, char *);
        !           115:
        !           116: #endif /* _ARM_DB_MACHDEP_H_ */