1178172Simp/* $OpenBSD: db_machdep.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */ 2178172Simp 3331722Seadler/* 4178172Simp * Copyright (c) 1998 Per Fogelstrom, Opsycon AB 5178172Simp * 6178172Simp * Redistribution and use in source and binary forms, with or without 7178172Simp * modification, are permitted provided that the following conditions 8178172Simp * are met: 9178172Simp * 1. Redistributions of source code must retain the above copyright 10178172Simp * notice, this list of conditions and the following disclaimer. 11178172Simp * 2. Redistributions in binary form must reproduce the above copyright 12178172Simp * notice, this list of conditions and the following disclaimer in the 13178172Simp * documentation and/or other materials provided with the distribution. 14178172Simp * 3. All advertising materials mentioning features or use of this software 15178172Simp * must display the following acknowledgement: 16178172Simp * This product includes software developed under OpenBSD by 17178172Simp * Per Fogelstrom, Opsycon AB, Sweden. 18178172Simp * 4. The name of the author may not be used to endorse or promote products 19178172Simp * derived from this software without specific prior written permission. 20178172Simp * 21178172Simp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 22178172Simp * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 23178172Simp * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24178172Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 25178172Simp * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26178172Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27178172Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28178172Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29178172Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30178172Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31178172Simp * SUCH DAMAGE. 32178172Simp * 33178172Simp * JNPR: db_machdep.h,v 1.7 2006/10/16 12:30:34 katta 34178172Simp * $FreeBSD$ 35178172Simp */ 36178172Simp 37178172Simp#ifndef _MIPS_DB_MACHDEP_H_ 38178172Simp#define _MIPS_DB_MACHDEP_H_ 39178172Simp 40178172Simp#include <machine/frame.h> 41178172Simp#include <machine/trap.h> 42178172Simp#include <machine/endian.h> 43178172Simp 44178172Simptypedef struct trapframe db_regs_t; 45178172Simpextern db_regs_t ddb_regs; /* register state */ 46178172Simp 47178172Simptypedef vm_offset_t db_addr_t; /* address - unsigned */ 48202031Simptypedef register_t db_expr_t; /* expression - signed */ 49178172Simp 50178172Simp#if BYTE_ORDER == _BIG_ENDIAN 51178172Simp#define BYTE_MSF (1) 52178172Simp#endif 53178172Simp 54178172Simp#define SOFTWARE_SSTEP /* Need software single step */ 55178172Simp#define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */ 56178172Simpdb_addr_t next_instr_address(db_addr_t, boolean_t); 57178172Simp#define BKPT_SIZE (4) 58210041Simp#define BKPT_SET(ins) (MIPS_BREAK_DDB) 59178172Simp#define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0) 60178172Simp 61178172Simp#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK) 62178172Simp#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */ 63178172Simp 64178172Simp#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.pc) 65178172Simp#define BKPT_SKIP \ 66178172Simp do { \ 67178172Simp if((db_get_value(kdb_frame->pc, sizeof(int), FALSE) & \ 68210041Simp ~MIPS_BREAK_VAL_MASK) == MIPS_BREAK_INSTR) { \ 69178172Simp kdb_frame->pc += BKPT_SIZE; \ 70178172Simp kdb_thrctx->pcb_regs.pc += BKPT_SIZE; \ 71178172Simp } \ 72178172Simp } while (0); 73178172Simp 74178172Simp 75178172Simp/* 76178172Simp * Test of instructions to see class. 77178172Simp */ 78178172Simp#define IT_CALL 0x01 79178172Simp#define IT_BRANCH 0x02 80178172Simp#define IT_LOAD 0x03 81178172Simp#define IT_STORE 0x04 82178172Simp 83178172Simp#define inst_branch(i) (db_inst_type(i) == IT_BRANCH) 84178172Simp#define inst_trap_return(i) ((i) & 0) 85178172Simp#define inst_call(i) (db_inst_type(i) == IT_CALL) 86178172Simp#define inst_return(i) ((i) == 0x03e00008) 87178172Simp#define inst_load(i) (db_inst_type(i) == IT_LOAD) 88178172Simp#define inst_store(i) (db_inst_type(i) == IT_STORE) 89178172Simp 90178172Simp#define DB_SMALL_VALUE_MAX 0x7fffffff 91178172Simp#define DB_SMALL_VALUE_MIN (-0x400001) 92178172Simp 93178172Simpint db_inst_type(int); 94178172Simpdb_addr_t branch_taken(int inst, db_addr_t pc); 95202031Simpvoid stacktrace_subr(register_t pc, register_t sp, register_t ra, int (*)(const char *, ...)); 96230094Sgonzoint32_t kdbpeek(int *); 97230094Sgonzoint64_t kdbpeekd(int *); 98178172Simp 99178172Simp#endif /* !_MIPS_DB_MACHDEP_H_ */ 100