| 1 | /* Cell-based print utility routines for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "common-defs.h" |
| 21 | #include "print-utils.h" |
| 22 | /* Temporary storage using circular buffer. */ |
| 23 | |
| 24 | /* Number of cells in the circular buffer. */ |
| 25 | #define NUMCELLS 16 |
| 26 | |
| 27 | /* Return the next entry in the circular buffer. */ |
| 28 | |
| 29 | char * |
| 30 | get_print_cell (void) |
| 31 | { |
| 32 | static char buf[NUMCELLS][PRINT_CELL_SIZE]; |
| 33 | static int cell = 0; |
| 34 | |
| 35 | if (++cell >= NUMCELLS) |
| 36 | cell = 0; |
| 37 | return buf[cell]; |
| 38 | } |
| 39 | |
| 40 | static char * |
| 41 | decimal2str (const char *sign, ULONGEST addr, int width) |
| 42 | { |
| 43 | /* Steal code from valprint.c:print_decimal(). Should this worry |
| 44 | about the real size of addr as the above does? */ |
| 45 | unsigned long temp[3]; |
| 46 | char *str = get_print_cell (); |
| 47 | int i = 0; |
| 48 | |
| 49 | do |
| 50 | { |
| 51 | temp[i] = addr % (1000 * 1000 * 1000); |
| 52 | addr /= (1000 * 1000 * 1000); |
| 53 | i++; |
| 54 | width -= 9; |
| 55 | } |
| 56 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); |
| 57 | |
| 58 | width += 9; |
| 59 | if (width < 0) |
| 60 | width = 0; |
| 61 | |
| 62 | switch (i) |
| 63 | { |
| 64 | case 1: |
| 65 | xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu", sign, width, temp[0]); |
| 66 | break; |
| 67 | case 2: |
| 68 | xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu%09lu", sign, width, |
| 69 | temp[1], temp[0]); |
| 70 | break; |
| 71 | case 3: |
| 72 | xsnprintf (str, PRINT_CELL_SIZE, "%s%0*lu%09lu%09lu", sign, width, |
| 73 | temp[2], temp[1], temp[0]); |
| 74 | break; |
| 75 | default: |
| 76 | internal_error (__FILE__, __LINE__, |
| 77 | _("failed internal consistency check")); |
| 78 | } |
| 79 | |
| 80 | return str; |
| 81 | } |
| 82 | |
| 83 | static char * |
| 84 | octal2str (ULONGEST addr, int width) |
| 85 | { |
| 86 | unsigned long temp[3]; |
| 87 | char *str = get_print_cell (); |
| 88 | int i = 0; |
| 89 | |
| 90 | do |
| 91 | { |
| 92 | temp[i] = addr % (0100000 * 0100000); |
| 93 | addr /= (0100000 * 0100000); |
| 94 | i++; |
| 95 | width -= 10; |
| 96 | } |
| 97 | while (addr != 0 && i < (sizeof (temp) / sizeof (temp[0]))); |
| 98 | |
| 99 | width += 10; |
| 100 | if (width < 0) |
| 101 | width = 0; |
| 102 | |
| 103 | switch (i) |
| 104 | { |
| 105 | case 1: |
| 106 | if (temp[0] == 0) |
| 107 | xsnprintf (str, PRINT_CELL_SIZE, "%*o", width, 0); |
| 108 | else |
| 109 | xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo", width, temp[0]); |
| 110 | break; |
| 111 | case 2: |
| 112 | xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo%010lo", width, temp[1], temp[0]); |
| 113 | break; |
| 114 | case 3: |
| 115 | xsnprintf (str, PRINT_CELL_SIZE, "0%0*lo%010lo%010lo", width, |
| 116 | temp[2], temp[1], temp[0]); |
| 117 | break; |
| 118 | default: |
| 119 | internal_error (__FILE__, __LINE__, |
| 120 | _("failed internal consistency check")); |
| 121 | } |
| 122 | |
| 123 | return str; |
| 124 | } |
| 125 | |
| 126 | /* See print-utils.h. */ |
| 127 | |
| 128 | char * |
| 129 | pulongest (ULONGEST u) |
| 130 | { |
| 131 | return decimal2str ("", u, 0); |
| 132 | } |
| 133 | |
| 134 | /* See print-utils.h. */ |
| 135 | |
| 136 | char * |
| 137 | plongest (LONGEST l) |
| 138 | { |
| 139 | if (l < 0) |
| 140 | return decimal2str ("-", -l, 0); |
| 141 | else |
| 142 | return decimal2str ("", l, 0); |
| 143 | } |
| 144 | |
| 145 | /* Eliminate warning from compiler on 32-bit systems. */ |
| 146 | static int thirty_two = 32; |
| 147 | |
| 148 | /* See print-utils.h. */ |
| 149 | |
| 150 | char * |
| 151 | phex (ULONGEST l, int sizeof_l) |
| 152 | { |
| 153 | char *str; |
| 154 | |
| 155 | switch (sizeof_l) |
| 156 | { |
| 157 | case 8: |
| 158 | str = get_print_cell (); |
| 159 | xsnprintf (str, PRINT_CELL_SIZE, "%08lx%08lx", |
| 160 | (unsigned long) (l >> thirty_two), |
| 161 | (unsigned long) (l & 0xffffffff)); |
| 162 | break; |
| 163 | case 4: |
| 164 | str = get_print_cell (); |
| 165 | xsnprintf (str, PRINT_CELL_SIZE, "%08lx", (unsigned long) l); |
| 166 | break; |
| 167 | case 2: |
| 168 | str = get_print_cell (); |
| 169 | xsnprintf (str, PRINT_CELL_SIZE, "%04x", (unsigned short) (l & 0xffff)); |
| 170 | break; |
| 171 | default: |
| 172 | str = phex (l, sizeof (l)); |
| 173 | break; |
| 174 | } |
| 175 | |
| 176 | return str; |
| 177 | } |
| 178 | |
| 179 | /* See print-utils.h. */ |
| 180 | |
| 181 | char * |
| 182 | phex_nz (ULONGEST l, int sizeof_l) |
| 183 | { |
| 184 | char *str; |
| 185 | |
| 186 | switch (sizeof_l) |
| 187 | { |
| 188 | case 8: |
| 189 | { |
| 190 | unsigned long high = (unsigned long) (l >> thirty_two); |
| 191 | |
| 192 | str = get_print_cell (); |
| 193 | if (high == 0) |
| 194 | xsnprintf (str, PRINT_CELL_SIZE, "%lx", |
| 195 | (unsigned long) (l & 0xffffffff)); |
| 196 | else |
| 197 | xsnprintf (str, PRINT_CELL_SIZE, "%lx%08lx", high, |
| 198 | (unsigned long) (l & 0xffffffff)); |
| 199 | break; |
| 200 | } |
| 201 | case 4: |
| 202 | str = get_print_cell (); |
| 203 | xsnprintf (str, PRINT_CELL_SIZE, "%lx", (unsigned long) l); |
| 204 | break; |
| 205 | case 2: |
| 206 | str = get_print_cell (); |
| 207 | xsnprintf (str, PRINT_CELL_SIZE, "%x", (unsigned short) (l & 0xffff)); |
| 208 | break; |
| 209 | default: |
| 210 | str = phex_nz (l, sizeof (l)); |
| 211 | break; |
| 212 | } |
| 213 | |
| 214 | return str; |
| 215 | } |
| 216 | |
| 217 | /* See print-utils.h. */ |
| 218 | |
| 219 | char * |
| 220 | hex_string (LONGEST num) |
| 221 | { |
| 222 | char *result = get_print_cell (); |
| 223 | |
| 224 | xsnprintf (result, PRINT_CELL_SIZE, "0x%s", phex_nz (num, sizeof (num))); |
| 225 | return result; |
| 226 | } |
| 227 | |
| 228 | /* See print-utils.h. */ |
| 229 | |
| 230 | char * |
| 231 | hex_string_custom (LONGEST num, int width) |
| 232 | { |
| 233 | char *result = get_print_cell (); |
| 234 | char *result_end = result + PRINT_CELL_SIZE - 1; |
| 235 | const char *hex = phex_nz (num, sizeof (num)); |
| 236 | int hex_len = strlen (hex); |
| 237 | |
| 238 | if (hex_len > width) |
| 239 | width = hex_len; |
| 240 | if (width + 2 >= PRINT_CELL_SIZE) |
| 241 | internal_error (__FILE__, __LINE__, _("\ |
| 242 | hex_string_custom: insufficient space to store result")); |
| 243 | |
| 244 | strcpy (result_end - width - 2, "0x"); |
| 245 | memset (result_end - width, '0', width); |
| 246 | strcpy (result_end - hex_len, hex); |
| 247 | return result_end - width - 2; |
| 248 | } |
| 249 | |
| 250 | /* See print-utils.h. */ |
| 251 | |
| 252 | char * |
| 253 | int_string (LONGEST val, int radix, int is_signed, int width, |
| 254 | int use_c_format) |
| 255 | { |
| 256 | switch (radix) |
| 257 | { |
| 258 | case 16: |
| 259 | { |
| 260 | char *result; |
| 261 | |
| 262 | if (width == 0) |
| 263 | result = hex_string (val); |
| 264 | else |
| 265 | result = hex_string_custom (val, width); |
| 266 | if (! use_c_format) |
| 267 | result += 2; |
| 268 | return result; |
| 269 | } |
| 270 | case 10: |
| 271 | { |
| 272 | if (is_signed && val < 0) |
| 273 | return decimal2str ("-", -val, width); |
| 274 | else |
| 275 | return decimal2str ("", val, width); |
| 276 | } |
| 277 | case 8: |
| 278 | { |
| 279 | char *result = octal2str (val, width); |
| 280 | |
| 281 | if (use_c_format || val == 0) |
| 282 | return result; |
| 283 | else |
| 284 | return result + 1; |
| 285 | } |
| 286 | default: |
| 287 | internal_error (__FILE__, __LINE__, |
| 288 | _("failed internal consistency check")); |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | /* See print-utils.h. */ |
| 293 | |
| 294 | const char * |
| 295 | core_addr_to_string (const CORE_ADDR addr) |
| 296 | { |
| 297 | char *str = get_print_cell (); |
| 298 | |
| 299 | strcpy (str, "0x"); |
| 300 | strcat (str, phex (addr, sizeof (addr))); |
| 301 | return str; |
| 302 | } |
| 303 | |
| 304 | /* See print-utils.h. */ |
| 305 | |
| 306 | const char * |
| 307 | core_addr_to_string_nz (const CORE_ADDR addr) |
| 308 | { |
| 309 | char *str = get_print_cell (); |
| 310 | |
| 311 | strcpy (str, "0x"); |
| 312 | strcat (str, phex_nz (addr, sizeof (addr))); |
| 313 | return str; |
| 314 | } |
| 315 | |
| 316 | /* See print-utils.h. */ |
| 317 | |
| 318 | const char * |
| 319 | host_address_to_string_1 (const void *addr) |
| 320 | { |
| 321 | char *str = get_print_cell (); |
| 322 | |
| 323 | xsnprintf (str, PRINT_CELL_SIZE, "0x%s", |
| 324 | phex_nz ((uintptr_t) addr, sizeof (addr))); |
| 325 | return str; |
| 326 | } |