1 /* $NetBSD: printk.h,v 1.6 2018/08/28 08:50:46 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 2013 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Taylor R. Campbell. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LINUX_PRINTK_H_ 33 #define _LINUX_PRINTK_H_ 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 38 #define printk printf 39 #define vprintk vprintf 40 #define printk_once printf 41 #define pr_err printf /* XXX */ 42 #define pr_cont printf /* XXX */ 43 #define pr_info printf /* XXX */ 44 #define pr_info_once printf /* XXX */ 45 #define pr_warn_once printf /* XXX */ 46 #define pr_notice printf /* XXX */ 47 #define pr_debug printf /* XXX */ 48 #define KERN_EMERG "kern emerg: " 49 #define KERN_ALERT "kern alert: " 50 #define KERN_CRIT "kern crit: " 51 #define KERN_ERR "kern error: " 52 #define KERN_WARNING "kern warning: " 53 #define KERN_NOTICE "kern notice: " 54 #define KERN_INFO "kern info: " 55 #define KERN_DEBUG "kern debug: " 56 #define KERN_CONT "" 57 58 #define DUMP_PREFIX_NONE 0 59 #define DUMP_PREFIX_OFFSET 1 60 #define DUMP_PREFIX_ADDRESS 2 61 62 static inline void 63 hex_dump_to_buffer(const void *buf, size_t buf_size, int bytes_per_line, 64 int bytes_per_group, char *output, size_t output_size, bool ascii __unused) 65 { 66 const uint8_t *bytes = buf; 67 size_t i = 0, n; 68 69 KASSERT(output_size >= 1); 70 KASSERT((bytes_per_line == 16) || (bytes_per_line == 32)); 71 KASSERT(powerof2(bytes_per_group)); 72 KASSERT(0 < bytes_per_group); 73 KASSERT(bytes_per_group <= 8); 74 75 output[output_size - 1] = '\0'; 76 while (i < buf_size) { 77 n = snprintf(output, output_size, "%02x", bytes[i++]); 78 if (n >= output_size) 79 break; 80 output += n; output_size -= n; 81 if ((i == buf_size) || (0 == (i % bytes_per_line))) 82 n = snprintf(output, output_size, "\n"); 83 else if ((0 < i) && (0 == (i % bytes_per_group))) 84 n = snprintf(output, output_size, " "); 85 else 86 n = 0; 87 if (n >= output_size) 88 break; 89 output += n; output_size -= n; 90 } 91 } 92 93 static inline void 94 print_hex_dump(const char *level, const char *prefix, int prefix_type, 95 int bytes_per_line, int bytes_per_group, const void *buf, size_t buf_size, 96 bool ascii) 97 { 98 const uint8_t *bytes = buf; 99 /* Two digits and one space/newline per byte, plus a null. */ 100 char line[32*3 + 1]; 101 102 KASSERT((bytes_per_line == 16) || (bytes_per_line == 32)); 103 KASSERT(powerof2(bytes_per_group)); 104 KASSERT(0 < bytes_per_group); 105 KASSERT(bytes_per_group <= 8); 106 107 while (0 < buf_size) { 108 const size_t n = MIN(buf_size, 32); 109 110 switch (prefix_type) { 111 case DUMP_PREFIX_OFFSET: 112 printf("%08zu: ", (bytes - (const uint8_t *)buf)); 113 break; 114 115 case DUMP_PREFIX_ADDRESS: 116 printf("%p: ", bytes); 117 break; 118 119 case DUMP_PREFIX_NONE: 120 default: 121 break; 122 } 123 124 hex_dump_to_buffer(bytes, n, bytes_per_line, bytes_per_group, 125 line, sizeof(line), ascii); 126 KASSERT(0 < strnlen(line, sizeof(line))); 127 KASSERT(line[strnlen(line, sizeof(line)) - 1] == '\n'); 128 printf("%s", line); 129 130 bytes += n; 131 buf_size -= n; 132 } 133 } 134 135 #endif /* _LINUX_PRINTK_H_ */ 136