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DDB support. splddb() and trapcode for ddb.

This commit is contained in:
ragge 1995-06-16 15:17:27 +00:00
parent a1761db1f5
commit 913f0b045e
3 changed files with 78 additions and 4 deletions
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73
sys/arch/vax/include/db_machdep.h Normal file
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@ -0,0 +1,73 @@
/* $NetBSD: db_machdep.h,v 1.1 1995/06/16 15:17:27 ragge Exp $ */
/*
* Mach Operating System
* Copyright (c) 1991,1990 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.
*/
#ifndef _VAX_DB_MACHDEP_H_
#define _VAX_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
* Modified for vax out of i386 code.
*/
#include <sys/param.h>
#include <vm/vm.h>
#include <machine/trap.h>
typedef vm_offset_t db_addr_t; /* address - unsigned */
typedef int db_expr_t; /* expression - signed */
typedef struct trapframe db_regs_t;
db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->pc)
#define BKPT_INST 0x03 /* breakpoint instruction */
#define BKPT_SIZE (1) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define FIXUP_PC_AFTER_BREAK ddb_regs.pc -= BKPT_SIZE;
#define db_clear_single_step(regs) ((regs)->psl &= ~PSL_T)
#define db_set_single_step(regs) ((regs)->psl |= PSL_T)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP)
#define I_CALL 0xfb
#define I_RET 0x04
#define I_IRET 0x02
#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
#define inst_return(ins) (((ins)&0xff) == I_RET)
#define inst_call(ins) (((ins)&0xff) == I_CALL)
#define inst_load(ins) 0
#define inst_store(ins) 0
#endif /* _VAX_DB_MACHDEP_H_ */

3
sys/arch/vax/include/param.h
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@ -1,4 +1,4 @@
/* $NetBSD: param.h,v 1.8 1995/05/03 19:53:46 ragge Exp $ */
/* $NetBSD: param.h,v 1.9 1995/06/16 15:17:33 ragge Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -184,6 +184,7 @@
#define spl0() splx(0) /* IPL0 */
#define splsoftclock() splx(8) /* IPL08 */
#define splnet() splx(0xc) /* IPL0C */
#define splddb() splx(0xf) /* IPL0F */
#define spl4() splx(0x14) /* IPL14 */
#define spltty() splx(0x15) /* IPL15 */
#define splbio() splx(0x15) /* IPL15 */

6
sys/arch/vax/include/trap.h
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@ -1,4 +1,4 @@
/* $NetBSD: trap.h,v 1.7 1995/06/05 17:18:00 ragge Exp $ */
/* $NetBSD: trap.h,v 1.8 1995/06/16 15:17:40 ragge Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -59,9 +59,9 @@
#define T_ACCFLT 12 /* Access violation fault */
/* #define T_TABLEFLT 13 /* page table fault */
/* #define T_ALIGNFLT 14 /* alignment fault */
/* #define T_KSPNOTVAL 15 /* kernel stack pointer not valid */
#define T_KSPNOTVAL 15 /* kernel stack pointer not valid */
/* #define T_BUSERR 16 /* bus error */
/* #define T_KDBTRAP 17 /* kernel debugger trap */
#define T_KDBTRAP 17 /* kernel debugger trap */
/* #define T_DIVIDE 18 /* integer divide fault */
/* #define T_NMI 19 /* non-maskable trap */