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- /*-
- * Mach Operating System
- * Copyright (c) 1992 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- *
- * $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $
- * $NetBSD: db_machdep.h,v 1.4.22.1 2000/08/05 11:10:43 wiz Exp $
- * $FreeBSD$
- */
- /*
- * Machine-dependent defines for new kernel debugger.
- */
- #ifndef _POWERPC_DB_MACHDEP_H_
- #define _POWERPC_DB_MACHDEP_H_
- #include <vm/vm_param.h>
- #include <machine/elf.h>
- #define DB_ELF_SYMBOLS
- #define DB_ELFSIZE __ELF_WORD_SIZE
- typedef vm_offset_t db_addr_t; /* address - unsigned */
- typedef intptr_t db_expr_t; /* expression - signed */
- #define PC_REGS(regs) ((db_addr_t)kdb_thrctx->pcb_lr)
- #define BKPT_INST 0x7C810808 /* breakpoint instruction */
- #define BKPT_SIZE (4) /* size of breakpoint inst */
- #define BKPT_SET(inst) (BKPT_INST)
- #define db_clear_single_step kdb_cpu_clear_singlestep
- #define db_set_single_step kdb_cpu_set_singlestep
- #if 0
- #define SR_SINGLESTEP 0x400
- #define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP)
- #define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP)
- #endif
- #define T_BREAKPOINT 0xffff
- #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
- #define T_WATCHPOINT 0xeeee
- #ifdef T_WATCHPOINT
- #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
- #else
- #define IS_WATCHPOINT_TRAP(type, code) 0
- #endif
- #define M_RTS 0xfc0007fe
- #define I_RTS 0x4c000020
- #define M_BC 0xfc000000
- #define I_BC 0x40000000
- #define M_B 0xfc000000
- #define I_B 0x50000000
- #define M_RFI 0xfc0007fe
- #define I_RFI 0x4c000064
- #define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI)
- #define inst_return(ins) (((ins)&M_RTS) == I_RTS)
- #define inst_call(ins) (((ins)&M_BC ) == I_BC || \
- ((ins)&M_B ) == I_B )
- #define inst_load(ins) 0
- #define inst_store(ins) 0
- #endif /* _POWERPC_DB_MACHDEP_H_ */
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