NetBSD-5.0.2/sys/arch/alpha/include/db_machdep.h
/* $NetBSD: db_machdep.h,v 1.17 2007/02/21 22:59:37 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 <uvm/uvm_extern.h>
#include <machine/frame.h>
typedef vaddr_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
typedef struct trapframe db_regs_t;
extern db_regs_t *ddb_regp; /* pointer to current register state */
#define DDB_REGS (ddb_regp)
#define PC_REGS(regs) ((regs)->tf_regs[FRAME_PC])
#define BKPT_ADDR(addr) (addr) /* breakpoint address */
#define BKPT_INST 0x00000080 /* breakpoint instruction */
#define BKPT_SIZE (4) /* size of breakpoint inst */
#define BKPT_SET(inst, addr) (BKPT_INST)
#define FIXUP_PC_AFTER_BREAK(regs) \
((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE)
#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.
*/
bool db_inst_trap_return(int inst);
bool db_inst_return(int inst);
bool db_inst_call(int inst);
bool db_inst_branch(int inst);
bool db_inst_load(int inst);
bool db_inst_store(int inst);
bool db_inst_unconditional_flow_transfer(int inst);
db_addr_t db_branch_taken(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(db_regs_t *, int);
int ddb_trap(unsigned long, unsigned long, unsigned long,
unsigned long, struct trapframe *);
int alpha_debug(unsigned long, unsigned long, unsigned long,
unsigned long, struct trapframe *);
struct alpha_bus_space;
void alpha_kgdb_init(const char **, struct alpha_bus_space *);
/*
* 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
/*
* Stuff for KGDB.
*/
typedef long kgdb_reg_t;
#define KGDB_NUMREGS 66 /* from tm-alpha.h, NUM_REGS */
#define KGDB_REG_V0 0
#define KGDB_REG_T0 1
#define KGDB_REG_T1 2
#define KGDB_REG_T2 3
#define KGDB_REG_T3 4
#define KGDB_REG_T4 5
#define KGDB_REG_T5 6
#define KGDB_REG_T6 7
#define KGDB_REG_T7 8
#define KGDB_REG_S0 9
#define KGDB_REG_S1 10
#define KGDB_REG_S2 11
#define KGDB_REG_S3 12
#define KGDB_REG_S4 13
#define KGDB_REG_S5 14
#define KGDB_REG_S6 15 /* FP */
#define KGDB_REG_A0 16
#define KGDB_REG_A1 17
#define KGDB_REG_A2 18
#define KGDB_REG_A3 19
#define KGDB_REG_A4 20
#define KGDB_REG_A5 21
#define KGDB_REG_T8 22
#define KGDB_REG_T9 23
#define KGDB_REG_T10 24
#define KGDB_REG_T11 25
#define KGDB_REG_RA 26
#define KGDB_REG_T12 27
#define KGDB_REG_AT 28
#define KGDB_REG_GP 29
#define KGDB_REG_SP 30
#define KGDB_REG_ZERO 31
#define KGDB_REG_F0 32
#define KGDB_REG_F1 33
#define KGDB_REG_F2 34
#define KGDB_REG_F3 35
#define KGDB_REG_F4 36
#define KGDB_REG_F5 37
#define KGDB_REG_F6 38
#define KGDB_REG_F7 39
#define KGDB_REG_F8 40
#define KGDB_REG_F9 41
#define KGDB_REG_F10 42
#define KGDB_REG_F11 43
#define KGDB_REG_F12 44
#define KGDB_REG_F13 45
#define KGDB_REG_F14 46
#define KGDB_REG_F15 47
#define KGDB_REG_F16 48
#define KGDB_REG_F17 49
#define KGDB_REG_F18 50
#define KGDB_REG_F19 51
#define KGDB_REG_F20 52
#define KGDB_REG_F21 53
#define KGDB_REG_F22 54
#define KGDB_REG_F23 55
#define KGDB_REG_F24 56
#define KGDB_REG_F25 57
#define KGDB_REG_F26 58
#define KGDB_REG_F27 59
#define KGDB_REG_F28 60
#define KGDB_REG_F29 61
#define KGDB_REG_F30 62
#define KGDB_REG_F31 63
#define KGDB_REG_PC 64
#define KGDB_REG_VFP 65
/* Too much? Must be large enough for register transfer. */
#define KGDB_BUFLEN 1024
#endif /* _ALPHA_DB_MACHDEP_H_ */