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_ */
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