1 /* $NetBSD: db_machdep.h,v 1.1 2002/06/05 01:04:21 fredette Exp $ */ 2 3 /* $OpenBSD: db_machdep.h,v 1.5 2001/02/16 19:20:13 mickey Exp $ */ 4 5 /* 6 * Copyright (c) 1998 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 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Michael Shalayeff. 20 * 4. The name of the author may not be used to endorse or promote products 21 * derived from this software without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 24 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 25 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 27 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 28 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 29 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 31 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 32 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _HPPA_DB_MACHDEP_H_ 36 #define _HPPA_DB_MACHDEP_H_ 37 38 #include <uvm/uvm_extern.h> 39 40 #define DB_ELF_SYMBOLS 41 #define DB_ELFSIZE 32 42 43 /* types the generic ddb module needs */ 44 typedef vaddr_t db_addr_t; 45 typedef long db_expr_t; 46 47 typedef struct trapframe db_regs_t; 48 extern db_regs_t ddb_regs; 49 #define DDB_REGS (&ddb_regs) 50 51 /* 52 * Things needed by kgdb: 53 */ 54 typedef long kgdb_reg_t; 55 /* From gdb's config/pa/tm-pa.h NUM_REGS value */ 56 #define KGDB_NUMREGS (128) 57 /* XXX fredette - I think this is just a "big enough" kind of value */ 58 #define KGDB_BUFLEN 2048 59 60 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_iioq_head) 61 62 /* Breakpoint related definitions */ 63 #define BKPT_INST 0x00010000 /* break 0,8 */ 64 #define BKPT_SIZE sizeof(int) 65 #define BKPT_SET(inst) BKPT_INST 66 67 #define IS_BREAKPOINT_TRAP(type, code) (type != T_RECOVERY) 68 #define IS_WATCHPOINT_TRAP(type, code) 0 69 70 /* 71 * The PA-RISC leaves tf_iioq_head pointing to the break 72 * instruction, so we don't have to define FIXUP_PC_AFTER_BREAK. 73 * However, we can't allow ddb/kgdb to simply add BKPT_SIZE to 74 * tf_iioq_head to advance past the breakpoint, since this doesn't 75 * address tf_iioq_tail. So, we define PC_ADVANCE. 76 */ 77 #define PC_ADVANCE(regs) do { \ 78 (regs)->tf_iioq_head = (regs)->tf_iioq_tail; \ 79 (regs)->tf_iioq_tail += BKPT_SIZE; \ 80 } while(/* CONSTCOND */ 0) 81 82 #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr) 83 84 static __inline int inst_call(u_int ins) { 85 return (ins & 0xfc00e000) == 0xe8000000 || 86 (ins & 0xfc00e000) == 0xe8004000 || 87 (ins & 0xfc000000) == 0xe4000000; 88 } 89 static __inline int inst_branch(u_int ins) { 90 return (ins & 0xf0000000) == 0xe0000000 || 91 (ins & 0xf0000000) == 0xc0000000 || 92 (ins & 0xf0000000) == 0xa0000000 || 93 (ins & 0xf0000000) == 0x80000000; 94 } 95 static __inline int inst_load(u_int ins) { 96 return (ins & 0xf0000000) == 0x40000000 || 97 (ins & 0xf4000200) == 0x24000000 || 98 (ins & 0xfc000200) == 0x0c000000 || 99 (ins & 0xfc001fc0) != 0x0c0011c0; 100 } 101 static __inline int inst_store(u_int ins) { 102 return (ins & 0xf0000000) == 0x60000000 || 103 (ins & 0xf4000200) == 0x24000200 || 104 (ins & 0xfc000200) == 0x0c000200; 105 } 106 static __inline int inst_return(u_int ins) { 107 return (ins & 0xfc00e000) == 0xe800c000 || 108 (ins & 0xfc000000) == 0xe0000000; 109 } 110 static __inline int inst_trap_return(u_int ins) { 111 return (ins & 0xfc001fc0) == 0x00000ca0; 112 } 113 114 #define db_clear_single_step(r) ((r)->tf_ipsw &= ~PSW_R) 115 #define db_set_single_step(r) ((r)->tf_ipsw |= PSW_R) 116 117 int db_valid_breakpoint __P((db_addr_t)); 118 int kdb_trap __P((int, int, db_regs_t *)); 119 120 #endif /* _HPPA_DB_MACHDEP_H_ */ 121