aae5483213
Most of the changes are a direct result of adding thread awareness. Typically, DDB_REGS is gone. All registers are taken from the trapframe and backtraces use the PCB based contexts. DDB_REGS was defined to be a trapframe on all platforms anyway. Thread awareness introduces the following new commands: thread X switch to thread X (where X is the TID), show threads list all threads. The backtrace code has been made more flexible so that one can create backtraces for any thread by giving the thread ID as an argument to trace. With this change, ia64 has support for breakpoints.
101 lines
3.0 KiB
C
101 lines
3.0 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: db_machdep.h,v 1.6 1997/09/06 02:02:25 thorpej Exp $ */
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/*
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* Copyright (c) 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its 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
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* FOR 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 the
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* rights to redistribute these changes.
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*/
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#ifndef _ALPHA_DB_MACHDEP_H_
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#define _ALPHA_DB_MACHDEP_H_
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#include <sys/param.h>
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#include <vm/vm.h>
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#include <machine/frame.h>
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#define DB_NO_AOUT
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typedef vm_offset_t db_addr_t; /* address - unsigned */
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typedef long db_expr_t; /* expression - signed */
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#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_context[7])
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#define BKPT_INST 0x00000080 /* breakpoint instruction */
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#define BKPT_SIZE (4) /* size of breakpoint inst */
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#define BKPT_SET(inst) (BKPT_INST)
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#define FIXUP_PC_AFTER_BREAK (kdb_frame->tf_regs[FRAME_PC] -= BKPT_SIZE);
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#define SOFTWARE_SSTEP 1 /* no hardware support */
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#define IS_BREAKPOINT_TRAP(type, code) \
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((type) == ALPHA_KENTRY_IF && (code) == ALPHA_IF_CODE_BPT)
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#define IS_WATCHPOINT_TRAP(type, code) 0
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/*
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* Functions needed for software single-stepping.
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*/
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boolean_t db_inst_trap_return(int inst);
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boolean_t db_inst_return(int inst);
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boolean_t db_inst_call(int inst);
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boolean_t db_inst_branch(int inst);
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boolean_t db_inst_load(int inst);
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boolean_t db_inst_store(int inst);
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boolean_t db_inst_unconditional_flow_transfer(int inst);
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db_addr_t db_branch_taken(int inst, db_addr_t pc);
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#define inst_trap_return(ins) db_inst_trap_return(ins)
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#define inst_return(ins) db_inst_return(ins)
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#define inst_call(ins) db_inst_call(ins)
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#define inst_branch(ins) db_inst_branch(ins)
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#define inst_load(ins) db_inst_load(ins)
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#define inst_store(ins) db_inst_store(ins)
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#define inst_unconditional_flow_transfer(ins) \
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db_inst_unconditional_flow_transfer(ins)
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#define branch_taken(ins, pc) db_branch_taken(ins, pc)
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/* No delay slots on Alpha. */
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#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
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u_long db_register_value(int);
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/*
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* Pretty arbitrary
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*/
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#define DB_SMALL_VALUE_MAX 0x7fffffff
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#define DB_SMALL_VALUE_MIN (-0x400001)
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/*
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* We define some of our own commands.
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*/
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#define DB_MACHINE_COMMANDS
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/*
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* We use Elf64 symbols in DDB.
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*/
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#define DB_ELFSIZE 64
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#endif /* _ALPHA_DB_MACHDEP_H_ */
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