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freebsd-dev/sys/alpha/include/db_machdep.h

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Add $FreeBSD$
2000-05-01 20:32:07 +00:00
/* $FreeBSD$ */
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
/* $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.
*/
Allow alpha kernels to compile again- make sure opt_ddb.h is included and the reference to db_regs is *extern* from alpha/include/db_machdep.h (put it in alpha/alpha/machdep.c)- this avoids the problems we've had about different 'common' sizes prohibiting the kernel from linking.
2002-01-17 02:16:35 +00:00
#include "opt_ddb.h"
Make breakpoints and single-step work.
1998-06-28 01:00:27 +00:00
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
#include <sys/param.h>
#include <vm/vm.h>
#include <machine/frame.h>
Make breakpoints and single-step work.
1998-06-28 01:00:27 +00:00
#define DB_NO_AOUT
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
typedef vm_offset_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
typedef struct trapframe db_regs_t;
Allow alpha kernels to compile again- make sure opt_ddb.h is included and the reference to db_regs is *extern* from alpha/include/db_machdep.h (put it in alpha/alpha/machdep.c)- this avoids the problems we've had about different 'common' sizes prohibiting the kernel from linking.
2002-01-17 02:16:35 +00:00
#ifdef DDB
extern db_regs_t ddb_regs; /* register state */
#endif
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
#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)
#define FIXUP_PC_AFTER_BREAK \
Make breakpoints and single-step work.
1998-06-28 01:00:27 +00:00
(ddb_regs.tf_regs[FRAME_PC] -= BKPT_SIZE);
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
#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.
*/
Remove __P(). This was tested on the GENERIC kernel.
2002-03-20 18:58:47 +00:00
boolean_t db_inst_trap_return(int inst);
boolean_t db_inst_return(int inst);
boolean_t db_inst_call(int inst);
boolean_t db_inst_branch(int inst);
boolean_t db_inst_load(int inst);
boolean_t db_inst_store(int inst);
boolean_t db_inst_unconditional_flow_transfer(int inst);
db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs);
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
#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)))
Remove __P(). This was tested on the GENERIC kernel.
2002-03-20 18:58:47 +00:00
u_long db_register_value(db_regs_t *, int);
int kdb_trap(unsigned long, unsigned long, unsigned long,
unsigned long, struct trapframe *);
Add initial support for the FreeBSD/alpha kernel. This is very much a 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
1998-06-10 10:57:29 +00:00
/*
* 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_ELFSIZE 64
#endif /* _ALPHA_DB_MACHDEP_H_ */
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