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

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_ */