1 /* $NetBSD: db_machdep.h,v 1.12 2012/01/18 09:35:48 skrll Exp $ */ 2 3 /* $OpenBSD: db_machdep.h,v 1.5 2001/02/16 19:20:13 mickey Exp $ */ 4 5 /* 6 * Copyright (c) 1998-2004 Michael Shalayeff 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 22 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 26 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 27 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 28 * THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef _HPPA_DB_MACHDEP_H_ 32 #define _HPPA_DB_MACHDEP_H_ 33 34 #include <sys/param.h> 35 36 #include <uvm/uvm_extern.h> 37 38 #include <machine/pcb.h> 39 #include <machine/frame.h> 40 41 #define DB_ELF_SYMBOLS 42 #define DB_ELFSIZE 32 43 44 /* types the generic ddb module needs */ 45 typedef vaddr_t db_addr_t; 46 #define DDB_EXPR_FMT "l" /* expression is long */ 47 typedef long db_expr_t; 48 49 typedef struct trapframe db_regs_t; 50 extern db_regs_t ddb_regs; 51 #define DDB_REGS (&ddb_regs) 52 53 /* DDB commands not in db_interface.c */ 54 void db_dump_trap(db_expr_t, bool, db_expr_t, const char *); 55 56 /* 57 * Things needed by kgdb: 58 */ 59 typedef long kgdb_reg_t; 60 /* From gdb's config/pa/tm-pa.h NUM_REGS value */ 61 #define KGDB_NUMREGS (128) 62 /* XXX fredette - I think this is just a "big enough" kind of value */ 63 #define KGDB_BUFLEN 2048 64 65 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_iioq_head) 66 67 /* Breakpoint related definitions */ 68 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 69 #define BKPT_INST 0x00010000 /* break 0,8 */ 70 #define BKPT_SIZE sizeof(int) 71 #define BKPT_SET(inst, addr) BKPT_INST 72 73 #define IS_BREAKPOINT_TRAP(type, code) (type != T_RECOVERY) 74 #define IS_WATCHPOINT_TRAP(type, code) 0 75 76 /* 77 * The PA-RISC leaves tf_iioq_head pointing to the break 78 * instruction, so we don't have to define FIXUP_PC_AFTER_BREAK. 79 * However, we can't allow ddb/kgdb to simply add BKPT_SIZE to 80 * tf_iioq_head to advance past the breakpoint, since this doesn't 81 * address tf_iioq_tail. So, we define PC_ADVANCE. 82 */ 83 #define PC_ADVANCE(regs) do { \ 84 (regs)->tf_iioq_head = (regs)->tf_iioq_tail; \ 85 (regs)->tf_iioq_tail += BKPT_SIZE; \ 86 } while(/* CONSTCOND */ 0) 87 88 #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr) 89 90 static __inline int inst_call(u_int ins) { 91 return (ins & 0xfc00e000) == 0xe8000000 || 92 (ins & 0xfc00e000) == 0xe8004000 || 93 (ins & 0xfc000000) == 0xe4000000; 94 } 95 static __inline int inst_branch(u_int ins) { 96 return (ins & 0xf0000000) == 0xe0000000 || 97 (ins & 0xf0000000) == 0xc0000000 || 98 (ins & 0xf0000000) == 0xa0000000 || 99 (ins & 0xf0000000) == 0x80000000; 100 } 101 static __inline int inst_load(u_int ins) { 102 return (ins & 0xf0000000) == 0x40000000 || 103 (ins & 0xf4000200) == 0x24000000 || 104 (ins & 0xfc000200) == 0x0c000000 || 105 (ins & 0xfc001fc0) != 0x0c0011c0; 106 } 107 static __inline int inst_store(u_int ins) { 108 return (ins & 0xf0000000) == 0x60000000 || /* st */ 109 (ins & 0xf4000200) == 0x24000200 || /* fst/cst */ 110 (ins & 0xfc000200) == 0x0c000200 || /* stby */ 111 (ins & 0xfc0003c0) == 0xc0001c0; /* ldcw */ 112 } 113 static __inline int inst_return(u_int ins) { 114 return (ins & 0xfc00e000) == 0xe800c000 || 115 (ins & 0xfc000000) == 0xe0000000; 116 } 117 static __inline int inst_trap_return(u_int ins) { 118 return (ins & 0xfc001fc0) == 0x00000ca0; 119 } 120 121 #define db_clear_single_step(r) ((r)->tf_ipsw &= ~PSW_R) 122 #define db_set_single_step(r) ((r)->tf_ipsw |= PSW_R) 123 124 #define DB_MACHINE_COMMANDS 125 126 int db_valid_breakpoint(db_addr_t); 127 int kdb_trap(int, int, db_regs_t *); 128 129 #endif /* _HPPA_DB_MACHDEP_H_ */ 130