| 1 | /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2003-2015 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 "defs.h" |
| 21 | #include "gdbcore.h" |
| 22 | #include "regcache.h" |
| 23 | #include "mn10300-tdep.h" |
| 24 | #include "bfd.h" |
| 25 | #include "elf-bfd.h" |
| 26 | #include "osabi.h" |
| 27 | #include "regset.h" |
| 28 | #include "solib-svr4.h" |
| 29 | #include "frame.h" |
| 30 | #include "trad-frame.h" |
| 31 | #include "tramp-frame.h" |
| 32 | #include "linux-tdep.h" |
| 33 | |
| 34 | /* Transliterated from <asm-mn10300/elf.h>... */ |
| 35 | #define MN10300_ELF_NGREG 28 |
| 36 | #define MN10300_ELF_NFPREG 32 |
| 37 | |
| 38 | typedef gdb_byte mn10300_elf_greg_t[4]; |
| 39 | typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG]; |
| 40 | |
| 41 | typedef gdb_byte mn10300_elf_fpreg_t[4]; |
| 42 | typedef struct |
| 43 | { |
| 44 | mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG]; |
| 45 | gdb_byte fpcr[4]; |
| 46 | } mn10300_elf_fpregset_t; |
| 47 | |
| 48 | /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */ |
| 49 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0 |
| 50 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1 |
| 51 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2 |
| 52 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3 |
| 53 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4 |
| 54 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5 |
| 55 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6 |
| 56 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7 |
| 57 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8 |
| 58 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9 |
| 59 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10 |
| 60 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11 |
| 61 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12 |
| 62 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13 |
| 63 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14 |
| 64 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15 |
| 65 | #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16 |
| 66 | #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17 |
| 67 | #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18 |
| 68 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19 |
| 69 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20 |
| 70 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21 |
| 71 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22 |
| 72 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23 |
| 73 | #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24 |
| 74 | #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25 |
| 75 | #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26 |
| 76 | |
| 77 | /* New gdbarch API for corefile registers. |
| 78 | Given a section name and size, create a struct reg object |
| 79 | with a supply_register and a collect_register method. */ |
| 80 | |
| 81 | /* Copy register value of REGNUM from regset to regcache. |
| 82 | If REGNUM is -1, do this for all gp registers in regset. */ |
| 83 | |
| 84 | static void |
| 85 | am33_supply_gregset_method (const struct regset *regset, |
| 86 | struct regcache *regcache, |
| 87 | int regnum, const void *gregs, size_t len) |
| 88 | { |
| 89 | char zerobuf[MAX_REGISTER_SIZE]; |
| 90 | const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs; |
| 91 | int i; |
| 92 | |
| 93 | gdb_assert (len >= sizeof (mn10300_elf_gregset_t)); |
| 94 | |
| 95 | switch (regnum) { |
| 96 | case E_D0_REGNUM: |
| 97 | regcache_raw_supply (regcache, E_D0_REGNUM, |
| 98 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); |
| 99 | break; |
| 100 | case E_D1_REGNUM: |
| 101 | regcache_raw_supply (regcache, E_D1_REGNUM, |
| 102 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); |
| 103 | break; |
| 104 | case E_D2_REGNUM: |
| 105 | regcache_raw_supply (regcache, E_D2_REGNUM, |
| 106 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); |
| 107 | break; |
| 108 | case E_D3_REGNUM: |
| 109 | regcache_raw_supply (regcache, E_D3_REGNUM, |
| 110 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); |
| 111 | break; |
| 112 | case E_A0_REGNUM: |
| 113 | regcache_raw_supply (regcache, E_A0_REGNUM, |
| 114 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); |
| 115 | break; |
| 116 | case E_A1_REGNUM: |
| 117 | regcache_raw_supply (regcache, E_A1_REGNUM, |
| 118 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); |
| 119 | break; |
| 120 | case E_A2_REGNUM: |
| 121 | regcache_raw_supply (regcache, E_A2_REGNUM, |
| 122 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); |
| 123 | break; |
| 124 | case E_A3_REGNUM: |
| 125 | regcache_raw_supply (regcache, E_A3_REGNUM, |
| 126 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); |
| 127 | break; |
| 128 | case E_SP_REGNUM: |
| 129 | regcache_raw_supply (regcache, E_SP_REGNUM, |
| 130 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); |
| 131 | break; |
| 132 | case E_PC_REGNUM: |
| 133 | regcache_raw_supply (regcache, E_PC_REGNUM, |
| 134 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); |
| 135 | break; |
| 136 | case E_MDR_REGNUM: |
| 137 | regcache_raw_supply (regcache, E_MDR_REGNUM, |
| 138 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); |
| 139 | break; |
| 140 | case E_PSW_REGNUM: |
| 141 | regcache_raw_supply (regcache, E_PSW_REGNUM, |
| 142 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); |
| 143 | break; |
| 144 | case E_LIR_REGNUM: |
| 145 | regcache_raw_supply (regcache, E_LIR_REGNUM, |
| 146 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); |
| 147 | break; |
| 148 | case E_LAR_REGNUM: |
| 149 | regcache_raw_supply (regcache, E_LAR_REGNUM, |
| 150 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); |
| 151 | break; |
| 152 | case E_MDRQ_REGNUM: |
| 153 | regcache_raw_supply (regcache, E_MDRQ_REGNUM, |
| 154 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); |
| 155 | break; |
| 156 | case E_E0_REGNUM: |
| 157 | regcache_raw_supply (regcache, E_E0_REGNUM, |
| 158 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); |
| 159 | break; |
| 160 | case E_E1_REGNUM: |
| 161 | regcache_raw_supply (regcache, E_E1_REGNUM, |
| 162 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); |
| 163 | break; |
| 164 | case E_E2_REGNUM: |
| 165 | regcache_raw_supply (regcache, E_E2_REGNUM, |
| 166 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); |
| 167 | break; |
| 168 | case E_E3_REGNUM: |
| 169 | regcache_raw_supply (regcache, E_E3_REGNUM, |
| 170 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); |
| 171 | break; |
| 172 | case E_E4_REGNUM: |
| 173 | regcache_raw_supply (regcache, E_E4_REGNUM, |
| 174 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); |
| 175 | break; |
| 176 | case E_E5_REGNUM: |
| 177 | regcache_raw_supply (regcache, E_E5_REGNUM, |
| 178 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); |
| 179 | break; |
| 180 | case E_E6_REGNUM: |
| 181 | regcache_raw_supply (regcache, E_E6_REGNUM, |
| 182 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); |
| 183 | break; |
| 184 | case E_E7_REGNUM: |
| 185 | regcache_raw_supply (regcache, E_E7_REGNUM, |
| 186 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); |
| 187 | break; |
| 188 | |
| 189 | /* ssp, msp, and usp are inaccessible. */ |
| 190 | case E_E8_REGNUM: |
| 191 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 192 | regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf); |
| 193 | break; |
| 194 | case E_E9_REGNUM: |
| 195 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 196 | regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf); |
| 197 | break; |
| 198 | case E_E10_REGNUM: |
| 199 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 200 | regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf); |
| 201 | |
| 202 | break; |
| 203 | case E_MCRH_REGNUM: |
| 204 | regcache_raw_supply (regcache, E_MCRH_REGNUM, |
| 205 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); |
| 206 | break; |
| 207 | case E_MCRL_REGNUM: |
| 208 | regcache_raw_supply (regcache, E_MCRL_REGNUM, |
| 209 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); |
| 210 | break; |
| 211 | case E_MCVF_REGNUM: |
| 212 | regcache_raw_supply (regcache, E_MCVF_REGNUM, |
| 213 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); |
| 214 | break; |
| 215 | case E_FPCR_REGNUM: |
| 216 | /* FPCR is numbered among the GP regs, but handled as an FP reg. |
| 217 | Do nothing. */ |
| 218 | break; |
| 219 | case E_FPCR_REGNUM + 1: |
| 220 | /* The two unused registers beyond fpcr are inaccessible. */ |
| 221 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 222 | regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf); |
| 223 | break; |
| 224 | case E_FPCR_REGNUM + 2: |
| 225 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 226 | regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf); |
| 227 | break; |
| 228 | default: /* An error, obviously, but should we error out? */ |
| 229 | break; |
| 230 | case -1: |
| 231 | for (i = 0; i < MN10300_ELF_NGREG; i++) |
| 232 | am33_supply_gregset_method (regset, regcache, i, gregs, len); |
| 233 | break; |
| 234 | } |
| 235 | return; |
| 236 | } |
| 237 | |
| 238 | /* Copy fp register value of REGNUM from regset to regcache. |
| 239 | If REGNUM is -1, do this for all fp registers in regset. */ |
| 240 | |
| 241 | static void |
| 242 | am33_supply_fpregset_method (const struct regset *regset, |
| 243 | struct regcache *regcache, |
| 244 | int regnum, const void *fpregs, size_t len) |
| 245 | { |
| 246 | const mn10300_elf_fpregset_t *fpregset |
| 247 | = (const mn10300_elf_fpregset_t *) fpregs; |
| 248 | |
| 249 | gdb_assert (len >= sizeof (mn10300_elf_fpregset_t)); |
| 250 | |
| 251 | if (regnum == -1) |
| 252 | { |
| 253 | int i; |
| 254 | |
| 255 | for (i = 0; i < MN10300_ELF_NFPREG; i++) |
| 256 | am33_supply_fpregset_method (regset, regcache, |
| 257 | E_FS0_REGNUM + i, fpregs, len); |
| 258 | am33_supply_fpregset_method (regset, regcache, |
| 259 | E_FPCR_REGNUM, fpregs, len); |
| 260 | } |
| 261 | else if (regnum == E_FPCR_REGNUM) |
| 262 | regcache_raw_supply (regcache, E_FPCR_REGNUM, |
| 263 | &fpregset->fpcr); |
| 264 | else if (E_FS0_REGNUM <= regnum |
| 265 | && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) |
| 266 | regcache_raw_supply (regcache, regnum, |
| 267 | &fpregset->fpregs[regnum - E_FS0_REGNUM]); |
| 268 | |
| 269 | return; |
| 270 | } |
| 271 | |
| 272 | /* Copy register values from regcache to regset. */ |
| 273 | |
| 274 | static void |
| 275 | am33_collect_gregset_method (const struct regset *regset, |
| 276 | const struct regcache *regcache, |
| 277 | int regnum, void *gregs, size_t len) |
| 278 | { |
| 279 | mn10300_elf_gregset_t *regp = (gdb_byte (*)[28][4]) gregs; |
| 280 | int i; |
| 281 | |
| 282 | gdb_assert (len >= sizeof (mn10300_elf_gregset_t)); |
| 283 | |
| 284 | switch (regnum) { |
| 285 | case E_D0_REGNUM: |
| 286 | regcache_raw_collect (regcache, E_D0_REGNUM, |
| 287 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); |
| 288 | break; |
| 289 | case E_D1_REGNUM: |
| 290 | regcache_raw_collect (regcache, E_D1_REGNUM, |
| 291 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); |
| 292 | break; |
| 293 | case E_D2_REGNUM: |
| 294 | regcache_raw_collect (regcache, E_D2_REGNUM, |
| 295 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); |
| 296 | break; |
| 297 | case E_D3_REGNUM: |
| 298 | regcache_raw_collect (regcache, E_D3_REGNUM, |
| 299 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); |
| 300 | break; |
| 301 | case E_A0_REGNUM: |
| 302 | regcache_raw_collect (regcache, E_A0_REGNUM, |
| 303 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); |
| 304 | break; |
| 305 | case E_A1_REGNUM: |
| 306 | regcache_raw_collect (regcache, E_A1_REGNUM, |
| 307 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); |
| 308 | break; |
| 309 | case E_A2_REGNUM: |
| 310 | regcache_raw_collect (regcache, E_A2_REGNUM, |
| 311 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); |
| 312 | break; |
| 313 | case E_A3_REGNUM: |
| 314 | regcache_raw_collect (regcache, E_A3_REGNUM, |
| 315 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); |
| 316 | break; |
| 317 | case E_SP_REGNUM: |
| 318 | regcache_raw_collect (regcache, E_SP_REGNUM, |
| 319 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); |
| 320 | break; |
| 321 | case E_PC_REGNUM: |
| 322 | regcache_raw_collect (regcache, E_PC_REGNUM, |
| 323 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); |
| 324 | break; |
| 325 | case E_MDR_REGNUM: |
| 326 | regcache_raw_collect (regcache, E_MDR_REGNUM, |
| 327 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); |
| 328 | break; |
| 329 | case E_PSW_REGNUM: |
| 330 | regcache_raw_collect (regcache, E_PSW_REGNUM, |
| 331 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); |
| 332 | break; |
| 333 | case E_LIR_REGNUM: |
| 334 | regcache_raw_collect (regcache, E_LIR_REGNUM, |
| 335 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); |
| 336 | break; |
| 337 | case E_LAR_REGNUM: |
| 338 | regcache_raw_collect (regcache, E_LAR_REGNUM, |
| 339 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); |
| 340 | break; |
| 341 | case E_MDRQ_REGNUM: |
| 342 | regcache_raw_collect (regcache, E_MDRQ_REGNUM, |
| 343 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); |
| 344 | break; |
| 345 | case E_E0_REGNUM: |
| 346 | regcache_raw_collect (regcache, E_E0_REGNUM, |
| 347 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); |
| 348 | break; |
| 349 | case E_E1_REGNUM: |
| 350 | regcache_raw_collect (regcache, E_E1_REGNUM, |
| 351 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); |
| 352 | break; |
| 353 | case E_E2_REGNUM: |
| 354 | regcache_raw_collect (regcache, E_E2_REGNUM, |
| 355 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); |
| 356 | break; |
| 357 | case E_E3_REGNUM: |
| 358 | regcache_raw_collect (regcache, E_E3_REGNUM, |
| 359 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); |
| 360 | break; |
| 361 | case E_E4_REGNUM: |
| 362 | regcache_raw_collect (regcache, E_E4_REGNUM, |
| 363 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); |
| 364 | break; |
| 365 | case E_E5_REGNUM: |
| 366 | regcache_raw_collect (regcache, E_E5_REGNUM, |
| 367 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); |
| 368 | break; |
| 369 | case E_E6_REGNUM: |
| 370 | regcache_raw_collect (regcache, E_E6_REGNUM, |
| 371 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); |
| 372 | break; |
| 373 | case E_E7_REGNUM: |
| 374 | regcache_raw_collect (regcache, E_E7_REGNUM, |
| 375 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); |
| 376 | break; |
| 377 | |
| 378 | /* ssp, msp, and usp are inaccessible. */ |
| 379 | case E_E8_REGNUM: |
| 380 | /* The gregset struct has noplace to put this: do nothing. */ |
| 381 | break; |
| 382 | case E_E9_REGNUM: |
| 383 | /* The gregset struct has noplace to put this: do nothing. */ |
| 384 | break; |
| 385 | case E_E10_REGNUM: |
| 386 | /* The gregset struct has noplace to put this: do nothing. */ |
| 387 | break; |
| 388 | case E_MCRH_REGNUM: |
| 389 | regcache_raw_collect (regcache, E_MCRH_REGNUM, |
| 390 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); |
| 391 | break; |
| 392 | case E_MCRL_REGNUM: |
| 393 | regcache_raw_collect (regcache, E_MCRL_REGNUM, |
| 394 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); |
| 395 | break; |
| 396 | case E_MCVF_REGNUM: |
| 397 | regcache_raw_collect (regcache, E_MCVF_REGNUM, |
| 398 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); |
| 399 | break; |
| 400 | case E_FPCR_REGNUM: |
| 401 | /* FPCR is numbered among the GP regs, but handled as an FP reg. |
| 402 | Do nothing. */ |
| 403 | break; |
| 404 | case E_FPCR_REGNUM + 1: |
| 405 | /* The gregset struct has noplace to put this: do nothing. */ |
| 406 | break; |
| 407 | case E_FPCR_REGNUM + 2: |
| 408 | /* The gregset struct has noplace to put this: do nothing. */ |
| 409 | break; |
| 410 | default: /* An error, obviously, but should we error out? */ |
| 411 | break; |
| 412 | case -1: |
| 413 | for (i = 0; i < MN10300_ELF_NGREG; i++) |
| 414 | am33_collect_gregset_method (regset, regcache, i, gregs, len); |
| 415 | break; |
| 416 | } |
| 417 | return; |
| 418 | } |
| 419 | |
| 420 | /* Copy fp register values from regcache to regset. */ |
| 421 | |
| 422 | static void |
| 423 | am33_collect_fpregset_method (const struct regset *regset, |
| 424 | const struct regcache *regcache, |
| 425 | int regnum, void *fpregs, size_t len) |
| 426 | { |
| 427 | mn10300_elf_fpregset_t *fpregset = (mn10300_elf_fpregset_t *) fpregs; |
| 428 | |
| 429 | gdb_assert (len >= sizeof (mn10300_elf_fpregset_t)); |
| 430 | |
| 431 | if (regnum == -1) |
| 432 | { |
| 433 | int i; |
| 434 | for (i = 0; i < MN10300_ELF_NFPREG; i++) |
| 435 | am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i, |
| 436 | fpregs, len); |
| 437 | am33_collect_fpregset_method (regset, regcache, |
| 438 | E_FPCR_REGNUM, fpregs, len); |
| 439 | } |
| 440 | else if (regnum == E_FPCR_REGNUM) |
| 441 | regcache_raw_collect (regcache, E_FPCR_REGNUM, |
| 442 | &fpregset->fpcr); |
| 443 | else if (E_FS0_REGNUM <= regnum |
| 444 | && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) |
| 445 | regcache_raw_collect (regcache, regnum, |
| 446 | &fpregset->fpregs[regnum - E_FS0_REGNUM]); |
| 447 | |
| 448 | return; |
| 449 | } |
| 450 | |
| 451 | static const struct regset am33_gregset = |
| 452 | { |
| 453 | NULL, am33_supply_gregset_method, am33_collect_gregset_method |
| 454 | }; |
| 455 | |
| 456 | static const struct regset am33_fpregset = |
| 457 | { |
| 458 | NULL, am33_supply_fpregset_method, am33_collect_fpregset_method |
| 459 | }; |
| 460 | |
| 461 | /* Iterate over core file register note sections. */ |
| 462 | |
| 463 | static void |
| 464 | am33_iterate_over_regset_sections (struct gdbarch *gdbarch, |
| 465 | iterate_over_regset_sections_cb *cb, |
| 466 | void *cb_data, |
| 467 | const struct regcache *regcache) |
| 468 | { |
| 469 | cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset, |
| 470 | NULL, cb_data); |
| 471 | cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset, |
| 472 | NULL, cb_data); |
| 473 | } |
| 474 | \f |
| 475 | static void |
| 476 | am33_linux_sigframe_cache_init (const struct tramp_frame *self, |
| 477 | struct frame_info *this_frame, |
| 478 | struct trad_frame_cache *this_cache, |
| 479 | CORE_ADDR func); |
| 480 | |
| 481 | static const struct tramp_frame am33_linux_sigframe = { |
| 482 | SIGTRAMP_FRAME, |
| 483 | 1, |
| 484 | { |
| 485 | /* mov 119,d0 */ |
| 486 | { 0x2c, -1 }, |
| 487 | { 0x77, -1 }, |
| 488 | { 0x00, -1 }, |
| 489 | /* syscall 0 */ |
| 490 | { 0xf0, -1 }, |
| 491 | { 0xe0, -1 }, |
| 492 | { TRAMP_SENTINEL_INSN, -1 } |
| 493 | }, |
| 494 | am33_linux_sigframe_cache_init |
| 495 | }; |
| 496 | |
| 497 | static const struct tramp_frame am33_linux_rt_sigframe = { |
| 498 | SIGTRAMP_FRAME, |
| 499 | 1, |
| 500 | { |
| 501 | /* mov 173,d0 */ |
| 502 | { 0x2c, -1 }, |
| 503 | { 0xad, -1 }, |
| 504 | { 0x00, -1 }, |
| 505 | /* syscall 0 */ |
| 506 | { 0xf0, -1 }, |
| 507 | { 0xe0, -1 }, |
| 508 | { TRAMP_SENTINEL_INSN, -1 } |
| 509 | }, |
| 510 | am33_linux_sigframe_cache_init |
| 511 | }; |
| 512 | |
| 513 | /* Relevant struct definitions for signal handling... |
| 514 | |
| 515 | From arch/mn10300/kernel/sigframe.h: |
| 516 | |
| 517 | struct sigframe |
| 518 | { |
| 519 | void (*pretcode)(void); |
| 520 | int sig; |
| 521 | struct sigcontext *psc; |
| 522 | struct sigcontext sc; |
| 523 | struct fpucontext fpuctx; |
| 524 | unsigned long extramask[_NSIG_WORDS-1]; |
| 525 | char retcode[8]; |
| 526 | }; |
| 527 | |
| 528 | struct rt_sigframe |
| 529 | { |
| 530 | void (*pretcode)(void); |
| 531 | int sig; |
| 532 | struct siginfo *pinfo; |
| 533 | void *puc; |
| 534 | struct siginfo info; |
| 535 | struct ucontext uc; |
| 536 | struct fpucontext fpuctx; |
| 537 | char retcode[8]; |
| 538 | }; |
| 539 | |
| 540 | From include/asm-mn10300/ucontext.h: |
| 541 | |
| 542 | struct ucontext { |
| 543 | unsigned long uc_flags; |
| 544 | struct ucontext *uc_link; |
| 545 | stack_t uc_stack; |
| 546 | struct sigcontext uc_mcontext; |
| 547 | sigset_t uc_sigmask; |
| 548 | }; |
| 549 | |
| 550 | From include/asm-mn10300/sigcontext.h: |
| 551 | |
| 552 | struct fpucontext { |
| 553 | unsigned long fs[32]; |
| 554 | unsigned long fpcr; |
| 555 | }; |
| 556 | |
| 557 | struct sigcontext { |
| 558 | unsigned long d0; |
| 559 | unsigned long d1; |
| 560 | unsigned long d2; |
| 561 | unsigned long d3; |
| 562 | unsigned long a0; |
| 563 | unsigned long a1; |
| 564 | unsigned long a2; |
| 565 | unsigned long a3; |
| 566 | unsigned long e0; |
| 567 | unsigned long e1; |
| 568 | unsigned long e2; |
| 569 | unsigned long e3; |
| 570 | unsigned long e4; |
| 571 | unsigned long e5; |
| 572 | unsigned long e6; |
| 573 | unsigned long e7; |
| 574 | unsigned long lar; |
| 575 | unsigned long lir; |
| 576 | unsigned long mdr; |
| 577 | unsigned long mcvf; |
| 578 | unsigned long mcrl; |
| 579 | unsigned long mcrh; |
| 580 | unsigned long mdrq; |
| 581 | unsigned long sp; |
| 582 | unsigned long epsw; |
| 583 | unsigned long pc; |
| 584 | struct fpucontext *fpucontext; |
| 585 | unsigned long oldmask; |
| 586 | }; */ |
| 587 | |
| 588 | |
| 589 | #define AM33_SIGCONTEXT_D0 0 |
| 590 | #define AM33_SIGCONTEXT_D1 4 |
| 591 | #define AM33_SIGCONTEXT_D2 8 |
| 592 | #define AM33_SIGCONTEXT_D3 12 |
| 593 | #define AM33_SIGCONTEXT_A0 16 |
| 594 | #define AM33_SIGCONTEXT_A1 20 |
| 595 | #define AM33_SIGCONTEXT_A2 24 |
| 596 | #define AM33_SIGCONTEXT_A3 28 |
| 597 | #define AM33_SIGCONTEXT_E0 32 |
| 598 | #define AM33_SIGCONTEXT_E1 36 |
| 599 | #define AM33_SIGCONTEXT_E2 40 |
| 600 | #define AM33_SIGCONTEXT_E3 44 |
| 601 | #define AM33_SIGCONTEXT_E4 48 |
| 602 | #define AM33_SIGCONTEXT_E5 52 |
| 603 | #define AM33_SIGCONTEXT_E6 56 |
| 604 | #define AM33_SIGCONTEXT_E7 60 |
| 605 | #define AM33_SIGCONTEXT_LAR 64 |
| 606 | #define AM33_SIGCONTEXT_LIR 68 |
| 607 | #define AM33_SIGCONTEXT_MDR 72 |
| 608 | #define AM33_SIGCONTEXT_MCVF 76 |
| 609 | #define AM33_SIGCONTEXT_MCRL 80 |
| 610 | #define AM33_SIGCONTEXT_MCRH 84 |
| 611 | #define AM33_SIGCONTEXT_MDRQ 88 |
| 612 | #define AM33_SIGCONTEXT_SP 92 |
| 613 | #define AM33_SIGCONTEXT_EPSW 96 |
| 614 | #define AM33_SIGCONTEXT_PC 100 |
| 615 | #define AM33_SIGCONTEXT_FPUCONTEXT 104 |
| 616 | |
| 617 | |
| 618 | static void |
| 619 | am33_linux_sigframe_cache_init (const struct tramp_frame *self, |
| 620 | struct frame_info *this_frame, |
| 621 | struct trad_frame_cache *this_cache, |
| 622 | CORE_ADDR func) |
| 623 | { |
| 624 | CORE_ADDR sc_base, fpubase; |
| 625 | int i; |
| 626 | |
| 627 | sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM); |
| 628 | if (self == &am33_linux_sigframe) |
| 629 | { |
| 630 | sc_base += 8; |
| 631 | sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); |
| 632 | } |
| 633 | else |
| 634 | { |
| 635 | sc_base += 12; |
| 636 | sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4); |
| 637 | sc_base += 20; |
| 638 | } |
| 639 | |
| 640 | trad_frame_set_reg_addr (this_cache, E_D0_REGNUM, |
| 641 | sc_base + AM33_SIGCONTEXT_D0); |
| 642 | trad_frame_set_reg_addr (this_cache, E_D1_REGNUM, |
| 643 | sc_base + AM33_SIGCONTEXT_D1); |
| 644 | trad_frame_set_reg_addr (this_cache, E_D2_REGNUM, |
| 645 | sc_base + AM33_SIGCONTEXT_D2); |
| 646 | trad_frame_set_reg_addr (this_cache, E_D3_REGNUM, |
| 647 | sc_base + AM33_SIGCONTEXT_D3); |
| 648 | |
| 649 | trad_frame_set_reg_addr (this_cache, E_A0_REGNUM, |
| 650 | sc_base + AM33_SIGCONTEXT_A0); |
| 651 | trad_frame_set_reg_addr (this_cache, E_A1_REGNUM, |
| 652 | sc_base + AM33_SIGCONTEXT_A1); |
| 653 | trad_frame_set_reg_addr (this_cache, E_A2_REGNUM, |
| 654 | sc_base + AM33_SIGCONTEXT_A2); |
| 655 | trad_frame_set_reg_addr (this_cache, E_A3_REGNUM, |
| 656 | sc_base + AM33_SIGCONTEXT_A3); |
| 657 | |
| 658 | trad_frame_set_reg_addr (this_cache, E_E0_REGNUM, |
| 659 | sc_base + AM33_SIGCONTEXT_E0); |
| 660 | trad_frame_set_reg_addr (this_cache, E_E1_REGNUM, |
| 661 | sc_base + AM33_SIGCONTEXT_E1); |
| 662 | trad_frame_set_reg_addr (this_cache, E_E2_REGNUM, |
| 663 | sc_base + AM33_SIGCONTEXT_E2); |
| 664 | trad_frame_set_reg_addr (this_cache, E_E3_REGNUM, |
| 665 | sc_base + AM33_SIGCONTEXT_E3); |
| 666 | trad_frame_set_reg_addr (this_cache, E_E4_REGNUM, |
| 667 | sc_base + AM33_SIGCONTEXT_E4); |
| 668 | trad_frame_set_reg_addr (this_cache, E_E5_REGNUM, |
| 669 | sc_base + AM33_SIGCONTEXT_E5); |
| 670 | trad_frame_set_reg_addr (this_cache, E_E6_REGNUM, |
| 671 | sc_base + AM33_SIGCONTEXT_E6); |
| 672 | trad_frame_set_reg_addr (this_cache, E_E7_REGNUM, |
| 673 | sc_base + AM33_SIGCONTEXT_E7); |
| 674 | |
| 675 | trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM, |
| 676 | sc_base + AM33_SIGCONTEXT_LAR); |
| 677 | trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM, |
| 678 | sc_base + AM33_SIGCONTEXT_LIR); |
| 679 | trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM, |
| 680 | sc_base + AM33_SIGCONTEXT_MDR); |
| 681 | trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM, |
| 682 | sc_base + AM33_SIGCONTEXT_MCVF); |
| 683 | trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM, |
| 684 | sc_base + AM33_SIGCONTEXT_MCRL); |
| 685 | trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM, |
| 686 | sc_base + AM33_SIGCONTEXT_MDRQ); |
| 687 | |
| 688 | trad_frame_set_reg_addr (this_cache, E_SP_REGNUM, |
| 689 | sc_base + AM33_SIGCONTEXT_SP); |
| 690 | trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM, |
| 691 | sc_base + AM33_SIGCONTEXT_EPSW); |
| 692 | trad_frame_set_reg_addr (this_cache, E_PC_REGNUM, |
| 693 | sc_base + AM33_SIGCONTEXT_PC); |
| 694 | |
| 695 | fpubase = get_frame_memory_unsigned (this_frame, |
| 696 | sc_base + AM33_SIGCONTEXT_FPUCONTEXT, |
| 697 | 4); |
| 698 | if (fpubase) |
| 699 | { |
| 700 | for (i = 0; i < 32; i++) |
| 701 | { |
| 702 | trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i, |
| 703 | fpubase + 4 * i); |
| 704 | } |
| 705 | trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32); |
| 706 | } |
| 707 | |
| 708 | trad_frame_set_id (this_cache, frame_id_build (sc_base, func)); |
| 709 | } |
| 710 | \f |
| 711 | /* AM33 GNU/Linux osabi has been recognized. |
| 712 | Now's our chance to register our corefile handling. */ |
| 713 | |
| 714 | static void |
| 715 | am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 716 | { |
| 717 | linux_init_abi (info, gdbarch); |
| 718 | |
| 719 | set_gdbarch_iterate_over_regset_sections |
| 720 | (gdbarch, am33_iterate_over_regset_sections); |
| 721 | set_solib_svr4_fetch_link_map_offsets |
| 722 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); |
| 723 | |
| 724 | tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe); |
| 725 | tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe); |
| 726 | } |
| 727 | |
| 728 | /* Provide a prototype to silence -Wmissing-prototypes. */ |
| 729 | extern initialize_file_ftype _initialize_mn10300_linux_tdep; |
| 730 | |
| 731 | void |
| 732 | _initialize_mn10300_linux_tdep (void) |
| 733 | { |
| 734 | gdbarch_register_osabi (bfd_arch_mn10300, 0, |
| 735 | GDB_OSABI_LINUX, am33_linux_init_osabi); |
| 736 | } |
| 737 | |