8c5c893bf7
breakpoint address before it's used. Currently a no-op on all but sh5. This is useful on sh5, for example, to mask off the instruction type encoding in the bottom two address bits, and makes it possible to do "db> break $rXX" instead of manually munging the address.
91 lines
2.6 KiB
C
91 lines
2.6 KiB
C
/* $NetBSD: db_machdep.h,v 1.12 2003/04/29 17:06:07 scw Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990 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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#ifndef _VAX_DB_MACHDEP_H_
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#define _VAX_DB_MACHDEP_H_
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/*
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* Machine-dependent defines for new kernel debugger.
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* Modified for vax out of i386 code.
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*/
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#include <sys/param.h>
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#include <uvm/uvm_extern.h>
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#include <machine/trap.h>
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#include <machine/psl.h>
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typedef vaddr_t db_addr_t; /* address - unsigned */
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typedef long db_expr_t; /* expression - signed */
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs; /* register state */
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#define DDB_REGS (&ddb_regs)
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#define PC_REGS(regs) ((db_addr_t)(regs)->pc)
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#define BKPT_ADDR(addr) (addr) /* breakpoint address */
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#define BKPT_INST 0x03 /* breakpoint instruction */
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#define BKPT_SIZE (1) /* size of breakpoint inst */
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#define BKPT_SET(inst) (BKPT_INST)
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#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->pc -= BKPT_SIZE)
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#define db_clear_single_step(regs) ((regs)->psl &= ~PSL_T)
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#define db_set_single_step(regs) ((regs)->psl |= PSL_T)
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
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#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP)
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#define I_CALL 0xfb
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#define I_RET 0x04
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#define I_IRET 0x02
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#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
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#define inst_return(ins) (((ins)&0xff) == I_RET)
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#define inst_call(ins) (((ins)&0xff) == I_CALL)
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#define inst_load(ins) 0
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#define inst_store(ins) 0
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#define DB_MACHINE_COMMANDS
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/* Prototypes */
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void kdb_trap __P((struct trapframe *));
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/*
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* We use a.out symbols in DDB (unless we are ELF then we use ELF symbols).
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*/
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#ifdef __ELF__
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#define DB_ELF_SYMBOLS
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#define DB_ELFSIZE 32
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#else
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#define DB_AOUT_SYMBOLS
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#endif
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#endif /* _VAX_DB_MACHDEP_H_ */
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