897cd717a5
work in progress and has never booted a real machine. Initial development and testing was done using SimOS (see http://simos.stanford.edu for details). On the SimOS simulator, this port successfully reaches single-user mode and has been tested with loads as high as one copy of /bin/ls :-). Obtained from: partly from NetBSD/alpha
113 lines
3.4 KiB
C
113 lines
3.4 KiB
C
/* $NetBSD: db_machdep.h,v 1.6 1997/09/06 02:02:25 thorpej Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Chris G. Demetriou
|
|
*
|
|
* 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 the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
#ifndef _ALPHA_DB_MACHDEP_H_
|
|
#define _ALPHA_DB_MACHDEP_H_
|
|
|
|
/*
|
|
* Machine-dependent defines for new kernel debugger.
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <vm/vm.h>
|
|
#include <machine/frame.h>
|
|
|
|
typedef vm_offset_t db_addr_t; /* address - unsigned */
|
|
typedef long 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)->tf_regs[FRAME_PC])
|
|
|
|
#define BKPT_INST 0x00000080 /* breakpoint instruction */
|
|
#define BKPT_SIZE (4) /* size of breakpoint inst */
|
|
#define BKPT_SET(inst) (BKPT_INST)
|
|
|
|
#if 0
|
|
#define FIXUP_PC_AFTER_BREAK \
|
|
(ddb_regs.tf_regs[FRAME_PC] -= BKPT_SIZE)
|
|
#endif
|
|
|
|
#define SOFTWARE_SSTEP 1 /* no hardware support */
|
|
#define IS_BREAKPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_IF && \
|
|
(code) == ALPHA_IF_CODE_BPT)
|
|
#define IS_WATCHPOINT_TRAP(type, code) 0
|
|
|
|
/*
|
|
* Functions needed for software single-stepping.
|
|
*/
|
|
|
|
boolean_t db_inst_trap_return __P((int inst));
|
|
boolean_t db_inst_return __P((int inst));
|
|
boolean_t db_inst_call __P((int inst));
|
|
boolean_t db_inst_branch __P((int inst));
|
|
boolean_t db_inst_load __P((int inst));
|
|
boolean_t db_inst_store __P((int inst));
|
|
boolean_t db_inst_unconditional_flow_transfer __P((int inst));
|
|
db_addr_t db_branch_taken __P((int inst, db_addr_t pc, db_regs_t *regs));
|
|
|
|
#define inst_trap_return(ins) db_inst_trap_return(ins)
|
|
#define inst_return(ins) db_inst_return(ins)
|
|
#define inst_call(ins) db_inst_call(ins)
|
|
#define inst_branch(ins) db_inst_branch(ins)
|
|
#define inst_load(ins) db_inst_load(ins)
|
|
#define inst_store(ins) db_inst_store(ins)
|
|
#define inst_unconditional_flow_transfer(ins) \
|
|
db_inst_unconditional_flow_transfer(ins)
|
|
#define branch_taken(ins, pc, regs) \
|
|
db_branch_taken((ins), (pc), (regs))
|
|
|
|
/* No delay slots on Alpha. */
|
|
#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
|
|
|
|
u_long db_register_value __P((db_regs_t *, int));
|
|
int ddb_trap __P((unsigned long, unsigned long, unsigned long,
|
|
unsigned long, struct trapframe *));
|
|
|
|
/*
|
|
* Pretty arbitrary
|
|
*/
|
|
#define DB_SMALL_VALUE_MAX 0x7fffffff
|
|
#define DB_SMALL_VALUE_MIN (-0x400001)
|
|
|
|
/*
|
|
* We define some of our own commands.
|
|
*/
|
|
#define DB_MACHINE_COMMANDS
|
|
|
|
/*
|
|
* We use Elf64 symbols in DDB.
|
|
*/
|
|
#define DB_ELF_SYMBOLS
|
|
#define DB_ELFSIZE 64
|
|
|
|
#endif /* _ALPHA_DB_MACHDEP_H_ */
|