121 lines
4.3 KiB
C
121 lines
4.3 KiB
C
/* $NetBSD: db_machdep.h,v 1.1 2002/06/05 01:04:21 fredette Exp $ */
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/* $OpenBSD: db_machdep.h,v 1.5 2001/02/16 19:20:13 mickey Exp $ */
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/*
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* Copyright (c) 1998 Michael Shalayeff
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Michael Shalayeff.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _HPPA_DB_MACHDEP_H_
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#define _HPPA_DB_MACHDEP_H_
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#include <uvm/uvm_extern.h>
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#define DB_ELF_SYMBOLS
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#define DB_ELFSIZE 32
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/* types the generic ddb module needs */
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typedef vaddr_t db_addr_t;
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typedef long db_expr_t;
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs;
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#define DDB_REGS (&ddb_regs)
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/*
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* Things needed by kgdb:
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*/
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typedef long kgdb_reg_t;
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/* From gdb's config/pa/tm-pa.h NUM_REGS value */
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#define KGDB_NUMREGS (128)
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/* XXX fredette - I think this is just a "big enough" kind of value */
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#define KGDB_BUFLEN 2048
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#define PC_REGS(regs) ((db_addr_t)(regs)->tf_iioq_head)
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/* Breakpoint related definitions */
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#define BKPT_INST 0x00010000 /* break 0,8 */
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#define BKPT_SIZE sizeof(int)
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#define BKPT_SET(inst) BKPT_INST
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#define IS_BREAKPOINT_TRAP(type, code) (type != T_RECOVERY)
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#define IS_WATCHPOINT_TRAP(type, code) 0
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/*
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* The PA-RISC leaves tf_iioq_head pointing to the break
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* instruction, so we don't have to define FIXUP_PC_AFTER_BREAK.
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* However, we can't allow ddb/kgdb to simply add BKPT_SIZE to
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* tf_iioq_head to advance past the breakpoint, since this doesn't
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* address tf_iioq_tail. So, we define PC_ADVANCE.
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*/
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#define PC_ADVANCE(regs) do { \
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(regs)->tf_iioq_head = (regs)->tf_iioq_tail; \
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(regs)->tf_iioq_tail += BKPT_SIZE; \
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} while(/* CONSTCOND */ 0)
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#define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr)
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static __inline int inst_call(u_int ins) {
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return (ins & 0xfc00e000) == 0xe8000000 ||
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(ins & 0xfc00e000) == 0xe8004000 ||
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(ins & 0xfc000000) == 0xe4000000;
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}
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static __inline int inst_branch(u_int ins) {
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return (ins & 0xf0000000) == 0xe0000000 ||
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(ins & 0xf0000000) == 0xc0000000 ||
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(ins & 0xf0000000) == 0xa0000000 ||
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(ins & 0xf0000000) == 0x80000000;
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}
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static __inline int inst_load(u_int ins) {
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return (ins & 0xf0000000) == 0x40000000 ||
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(ins & 0xf4000200) == 0x24000000 ||
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(ins & 0xfc000200) == 0x0c000000 ||
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(ins & 0xfc001fc0) != 0x0c0011c0;
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}
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static __inline int inst_store(u_int ins) {
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return (ins & 0xf0000000) == 0x60000000 ||
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(ins & 0xf4000200) == 0x24000200 ||
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(ins & 0xfc000200) == 0x0c000200;
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}
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static __inline int inst_return(u_int ins) {
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return (ins & 0xfc00e000) == 0xe800c000 ||
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(ins & 0xfc000000) == 0xe0000000;
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}
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static __inline int inst_trap_return(u_int ins) {
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return (ins & 0xfc001fc0) == 0x00000ca0;
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}
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#define db_clear_single_step(r) ((r)->tf_ipsw &= ~PSW_R)
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#define db_set_single_step(r) ((r)->tf_ipsw |= PSW_R)
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int db_valid_breakpoint __P((db_addr_t));
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int kdb_trap __P((int, int, db_regs_t *));
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#endif /* _HPPA_DB_MACHDEP_H_ */
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