41ddc6ea3d
Unlike the other architectures, the PowerPC kernel is loaded under the 2GB boundary. MFC after: 2 weeks
94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/*-
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* Mach Operating System
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* Copyright (c) 1992 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*
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* $OpenBSD: db_machdep.h,v 1.2 1997/03/21 00:48:48 niklas Exp $
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* $NetBSD: db_machdep.h,v 1.4.22.1 2000/08/05 11:10:43 wiz Exp $
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* $FreeBSD$
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*/
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/*
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* Machine-dependent defines for new kernel debugger.
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*/
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#ifndef _POWERPC_DB_MACHDEP_H_
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#define _POWERPC_DB_MACHDEP_H_
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#include <vm/vm_param.h>
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#include <machine/elf.h>
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#define DB_ELF_SYMBOLS
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#define DB_ELFSIZE __ELF_WORD_SIZE
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#define BYTE_MSF (1)
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typedef vm_offset_t db_addr_t; /* address - unsigned */
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typedef intptr_t db_expr_t; /* expression - signed */
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#define PC_REGS(regs) ((db_addr_t)kdb_thrctx->pcb_lr)
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#define BKPT_INST 0x7C810808 /* breakpoint instruction */
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#define BKPT_SIZE (4) /* size of breakpoint inst */
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#define BKPT_SET(inst) (BKPT_INST)
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#define db_clear_single_step kdb_cpu_clear_singlestep
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#define db_set_single_step kdb_cpu_set_singlestep
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#if 0
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#define SR_SINGLESTEP 0x400
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#define db_clear_single_step(regs) ((regs)->msr &= ~SR_SINGLESTEP)
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#define db_set_single_step(regs) ((regs)->msr |= SR_SINGLESTEP)
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#endif
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#define T_BREAKPOINT 0xffff
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
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#define T_WATCHPOINT 0xeeee
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#ifdef T_WATCHPOINT
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#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
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#else
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#define IS_WATCHPOINT_TRAP(type, code) 0
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#endif
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#define M_RTS 0xfc0007fe
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#define I_RTS 0x4c000020
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#define M_BC 0xfc000000
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#define I_BC 0x40000000
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#define M_B 0xfc000000
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#define I_B 0x50000000
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#define M_RFI 0xfc0007fe
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#define I_RFI 0x4c000064
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#define inst_trap_return(ins) (((ins)&M_RFI) == I_RFI)
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#define inst_return(ins) (((ins)&M_RTS) == I_RTS)
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#define inst_call(ins) (((ins)&M_BC ) == I_BC || \
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((ins)&M_B ) == I_B )
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#define inst_load(ins) 0
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#define inst_store(ins) 0
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#define DB_SMALL_VALUE_MAX (KERNBASE-1)
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#define DB_SMALL_VALUE_MIN (-0x40001)
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#endif /* _POWERPC_DB_MACHDEP_H_ */
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