1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2004 Marcel Moolenaar 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31#ifndef _GDB_GDB_INT_H_ 32#define _GDB_GDB_INT_H_ 33 34#include "opt_ddb.h" 35 36#include <sys/sysctl.h> 37 38#ifdef DDB 39#include <ddb/ddb.h> 40#endif 41 42#ifndef EOF 43#define EOF (-1) 44#endif 45 46SYSCTL_DECL(_debug_gdb); 47 48extern struct gdb_dbgport *gdb_cur; 49 50extern int gdb_listening; 51void gdb_consinit(void); 52 53extern char *gdb_rxp; 54extern size_t gdb_rxsz; 55extern char *gdb_txp; 56 57extern bool gdb_ackmode; 58 59#ifdef DDB 60/* If set, return to DDB when controlling GDB detaches. */ 61extern bool gdb_return_to_ddb; 62#endif 63 64int gdb_rx_begin(void); 65int gdb_rx_equal(const char *); 66int gdb_rx_mem(unsigned char *, size_t); 67int gdb_rx_varhex(uintmax_t *); 68 69static __inline int 70gdb_rx_char(void) 71{ 72 int c; 73 74 if (gdb_rxsz > 0) { 75 c = *gdb_rxp++; 76 gdb_rxsz--; 77 } else 78 c = EOF; 79 return (c); 80} 81 82void gdb_tx_begin(char); 83int gdb_tx_end(void); 84int gdb_tx_mem(const unsigned char *, size_t); 85void gdb_tx_reg(int); 86bool gdb_txbuf_has_capacity(size_t); 87int gdb_rx_bindata(unsigned char *data, size_t datalen, size_t *amt); 88int gdb_search_mem(const unsigned char *addr, size_t size, 89 const unsigned char *pat, size_t patlen, const unsigned char **found); 90 91static __inline void 92gdb_tx_char(char c) 93{ 94 *gdb_txp++ = c; 95} 96 97static __inline int 98gdb_tx_empty(void) 99{ 100 gdb_tx_begin('\0'); 101 return (gdb_tx_end()); 102} 103 104static __inline void 105gdb_tx_hex(uintmax_t n, int sz) 106{ 107 gdb_txp += sprintf(gdb_txp, "%0*jx", sz, n); 108} 109 110static __inline int 111gdb_tx_err(int err) 112{ 113 gdb_tx_begin('E'); 114 gdb_tx_hex(err, 2); 115 return (gdb_tx_end()); 116} 117 118static __inline int 119gdb_tx_ok(void) 120{ 121 gdb_tx_begin('O'); 122 gdb_tx_char('K'); 123 return (gdb_tx_end()); 124} 125 126static __inline void 127gdb_tx_str(const char *s) 128{ 129 while (*s) 130 *gdb_txp++ = *s++; 131} 132 133static __inline void 134gdb_tx_varhex(uintmax_t n) 135{ 136 gdb_txp += sprintf(gdb_txp, "%jx", n); 137} 138 139static __inline void 140gdb_nack(void) 141{ 142 if (gdb_ackmode) 143 gdb_cur->gdb_putc('-'); 144} 145 146static __inline void 147gdb_ack(void) 148{ 149 if (gdb_ackmode) 150 gdb_cur->gdb_putc('+'); 151} 152 153#endif /* !_GDB_GDB_INT_H_ */ 154