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1// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
2/******************************************************************************
3 *
4 * Module Name: utbuffer - Buffer dump routines
5 *
6 * Copyright (C) 2000 - 2026, Intel Corp.
7 *
8 *****************************************************************************/
9
10#include <acpi/acpi.h>
11#include "accommon.h"
12
13#define _COMPONENT ACPI_UTILITIES
14ACPI_MODULE_NAME("utbuffer")
15
16/*******************************************************************************
17 *
18 * FUNCTION: acpi_ut_dump_buffer
19 *
20 * PARAMETERS: buffer - Buffer to dump
21 * count - Amount to dump, in bytes
22 * display - BYTE, WORD, DWORD, or QWORD display:
23 * DB_BYTE_DISPLAY
24 * DB_WORD_DISPLAY
25 * DB_DWORD_DISPLAY
26 * DB_QWORD_DISPLAY
27 * base_offset - Beginning buffer offset (display only)
28 *
29 * RETURN: None
30 *
31 * DESCRIPTION: Generic dump buffer in both hex and ascii.
32 *
33 ******************************************************************************/
34void acpi_ut_dump_buffer(u8 *buffer, u32 count, u32 display, u32 base_offset)
35{
36 u32 i = 0;
37 u32 j;
38 u32 temp32;
39 u8 buf_char;
40 u32 display_data_only = display & DB_DISPLAY_DATA_ONLY;
41
42 display &= ~DB_DISPLAY_DATA_ONLY;
43 if (!buffer) {
44 acpi_os_printf("Null Buffer Pointer in DumpBuffer!\n");
45 return;
46 }
47
48 if ((count < 4) || (count & 0x01)) {
49 display = DB_BYTE_DISPLAY;
50 }
51
52 /* Nasty little dump buffer routine! */
53
54 while (i < count) {
55
56 /* Print current offset */
57
58 if (!display_data_only) {
59 acpi_os_printf("%8.4X: ", (base_offset + i));
60 }
61
62 /* Print 16 hex chars */
63
64 for (j = 0; j < 16;) {
65 if (i + j >= count) {
66
67 /* Dump fill spaces */
68
69 acpi_os_printf("%*s", ((display * 2) + 1), " ");
70 j += display;
71 continue;
72 }
73
74 switch (display) {
75 case DB_BYTE_DISPLAY:
76 default: /* Default is BYTE display */
77
78 acpi_os_printf("%02X ",
79 buffer[(acpi_size)i + j]);
80 break;
81
82 case DB_WORD_DISPLAY:
83
84 ACPI_MOVE_16_TO_32(&temp32,
85 &buffer[(acpi_size)i + j]);
86 acpi_os_printf("%04X ", temp32);
87 break;
88
89 case DB_DWORD_DISPLAY:
90
91 ACPI_MOVE_32_TO_32(&temp32,
92 &buffer[(acpi_size)i + j]);
93 acpi_os_printf("%08X ", temp32);
94 break;
95
96 case DB_QWORD_DISPLAY:
97
98 ACPI_MOVE_32_TO_32(&temp32,
99 &buffer[(acpi_size)i + j]);
100 acpi_os_printf("%08X", temp32);
101
102 ACPI_MOVE_32_TO_32(&temp32,
103 &buffer[(acpi_size)i + j +
104 4]);
105 acpi_os_printf("%08X ", temp32);
106 break;
107 }
108
109 j += display;
110 }
111
112 /*
113 * Print the ASCII equivalent characters but watch out for the bad
114 * unprintable ones (printable chars are 0x20 through 0x7E)
115 */
116 if (!display_data_only) {
117 acpi_os_printf(" ");
118 for (j = 0; j < 16; j++) {
119 if (i + j >= count) {
120 acpi_os_printf("\n");
121 return;
122 }
123
124 /*
125 * Add comment characters so rest of line is ignored when
126 * compiled
127 */
128 if (j == 0) {
129 acpi_os_printf("// ");
130 }
131
132 buf_char = buffer[(acpi_size)i + j];
133 if (isprint(buf_char)) {
134 acpi_os_printf("%c", buf_char);
135 } else {
136 acpi_os_printf(".");
137 }
138 }
139
140 /* Done with that line. */
141
142 acpi_os_printf("\n");
143 }
144 i += 16;
145 }
146
147 return;
148}
149
150/*******************************************************************************
151 *
152 * FUNCTION: acpi_ut_debug_dump_buffer
153 *
154 * PARAMETERS: buffer - Buffer to dump
155 * count - Amount to dump, in bytes
156 * display - BYTE, WORD, DWORD, or QWORD display:
157 * DB_BYTE_DISPLAY
158 * DB_WORD_DISPLAY
159 * DB_DWORD_DISPLAY
160 * DB_QWORD_DISPLAY
161 * component_ID - Caller's component ID
162 *
163 * RETURN: None
164 *
165 * DESCRIPTION: Generic dump buffer in both hex and ascii.
166 *
167 ******************************************************************************/
168
169void
170acpi_ut_debug_dump_buffer(u8 *buffer, u32 count, u32 display, u32 component_id)
171{
172
173 /* Only dump the buffer if tracing is enabled */
174
175 if (!((ACPI_LV_TABLES & acpi_dbg_level) &&
176 (component_id & acpi_dbg_layer))) {
177 return;
178 }
179
180 acpi_ut_dump_buffer(buffer, count, display, 0);
181}
182
183#ifdef ACPI_APPLICATION
184/*******************************************************************************
185 *
186 * FUNCTION: acpi_ut_dump_buffer_to_file
187 *
188 * PARAMETERS: file - File descriptor
189 * buffer - Buffer to dump
190 * count - Amount to dump, in bytes
191 * display - BYTE, WORD, DWORD, or QWORD display:
192 * DB_BYTE_DISPLAY
193 * DB_WORD_DISPLAY
194 * DB_DWORD_DISPLAY
195 * DB_QWORD_DISPLAY
196 * base_offset - Beginning buffer offset (display only)
197 *
198 * RETURN: None
199 *
200 * DESCRIPTION: Generic dump buffer in both hex and ascii to a file.
201 *
202 ******************************************************************************/
203
204void
205acpi_ut_dump_buffer_to_file(ACPI_FILE file,
206 u8 *buffer, u32 count, u32 display, u32 base_offset)
207{
208 u32 i = 0;
209 u32 j;
210 u32 temp32;
211 u8 buf_char;
212
213 if (!buffer) {
214 fprintf(file, "Null Buffer Pointer in DumpBuffer!\n");
215 return;
216 }
217
218 if ((count < 4) || (count & 0x01)) {
219 display = DB_BYTE_DISPLAY;
220 }
221
222 /* Nasty little dump buffer routine! */
223
224 while (i < count) {
225
226 /* Print current offset */
227
228 fprintf(file, "%8.4X: ", (base_offset + i));
229
230 /* Print 16 hex chars */
231
232 for (j = 0; j < 16;) {
233 if (i + j >= count) {
234
235 /* Dump fill spaces */
236
237 fprintf(file, "%*s", ((display * 2) + 1), " ");
238 j += display;
239 continue;
240 }
241
242 switch (display) {
243 case DB_BYTE_DISPLAY:
244 default: /* Default is BYTE display */
245
246 fprintf(file, "%02X ",
247 buffer[(acpi_size)i + j]);
248 break;
249
250 case DB_WORD_DISPLAY:
251
252 ACPI_MOVE_16_TO_32(&temp32,
253 &buffer[(acpi_size)i + j]);
254 fprintf(file, "%04X ", temp32);
255 break;
256
257 case DB_DWORD_DISPLAY:
258
259 ACPI_MOVE_32_TO_32(&temp32,
260 &buffer[(acpi_size)i + j]);
261 fprintf(file, "%08X ", temp32);
262 break;
263
264 case DB_QWORD_DISPLAY:
265
266 ACPI_MOVE_32_TO_32(&temp32,
267 &buffer[(acpi_size)i + j]);
268 fprintf(file, "%08X", temp32);
269
270 ACPI_MOVE_32_TO_32(&temp32,
271 &buffer[(acpi_size)i + j +
272 4]);
273 fprintf(file, "%08X ", temp32);
274 break;
275 }
276
277 j += display;
278 }
279
280 /*
281 * Print the ASCII equivalent characters but watch out for the bad
282 * unprintable ones (printable chars are 0x20 through 0x7E)
283 */
284 fprintf(file, " ");
285 for (j = 0; j < 16; j++) {
286 if (i + j >= count) {
287 fprintf(file, "\n");
288 return;
289 }
290
291 buf_char = buffer[(acpi_size)i + j];
292 if (isprint(buf_char)) {
293 fprintf(file, "%c", buf_char);
294 } else {
295 fprintf(file, ".");
296 }
297 }
298
299 /* Done with that line. */
300
301 fprintf(file, "\n");
302 i += 16;
303 }
304
305 return;
306}
307#endif