| 1 | /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 2003, 2004, 2005, 2006, 2007 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 2 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, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 20 | Boston, MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdbcore.h" |
| 24 | #include "gdb_string.h" |
| 25 | #include "regcache.h" |
| 26 | #include "mn10300-tdep.h" |
| 27 | #include "gdb_assert.h" |
| 28 | #include "bfd.h" |
| 29 | #include "elf-bfd.h" |
| 30 | #include "osabi.h" |
| 31 | #include "regset.h" |
| 32 | #include "solib-svr4.h" |
| 33 | #include "frame.h" |
| 34 | #include "trad-frame.h" |
| 35 | #include "tramp-frame.h" |
| 36 | |
| 37 | #include <stdlib.h> |
| 38 | |
| 39 | /* Transliterated from <asm-mn10300/elf.h>... */ |
| 40 | #define MN10300_ELF_NGREG 28 |
| 41 | #define MN10300_ELF_NFPREG 32 |
| 42 | |
| 43 | typedef gdb_byte mn10300_elf_greg_t[4]; |
| 44 | typedef mn10300_elf_greg_t mn10300_elf_gregset_t[MN10300_ELF_NGREG]; |
| 45 | |
| 46 | typedef gdb_byte mn10300_elf_fpreg_t[4]; |
| 47 | typedef struct |
| 48 | { |
| 49 | mn10300_elf_fpreg_t fpregs[MN10300_ELF_NFPREG]; |
| 50 | gdb_byte fpcr[4]; |
| 51 | } mn10300_elf_fpregset_t; |
| 52 | |
| 53 | /* elf_gregset_t register indices stolen from include/asm-mn10300/ptrace.h. */ |
| 54 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A3 0 |
| 55 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A2 1 |
| 56 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D3 2 |
| 57 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D2 3 |
| 58 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCVF 4 |
| 59 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRL 5 |
| 60 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MCRH 6 |
| 61 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ 7 |
| 62 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E1 8 |
| 63 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E0 9 |
| 64 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E7 10 |
| 65 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E6 11 |
| 66 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E5 12 |
| 67 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E4 13 |
| 68 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E3 14 |
| 69 | #define MN10300_ELF_GREGSET_T_REG_INDEX_E2 15 |
| 70 | #define MN10300_ELF_GREGSET_T_REG_INDEX_SP 16 |
| 71 | #define MN10300_ELF_GREGSET_T_REG_INDEX_LAR 17 |
| 72 | #define MN10300_ELF_GREGSET_T_REG_INDEX_LIR 18 |
| 73 | #define MN10300_ELF_GREGSET_T_REG_INDEX_MDR 19 |
| 74 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A1 20 |
| 75 | #define MN10300_ELF_GREGSET_T_REG_INDEX_A0 21 |
| 76 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D1 22 |
| 77 | #define MN10300_ELF_GREGSET_T_REG_INDEX_D0 23 |
| 78 | #define MN10300_ELF_GREGSET_T_REG_INDEX_ORIG_D0 24 |
| 79 | #define MN10300_ELF_GREGSET_T_REG_INDEX_EPSW 25 |
| 80 | #define MN10300_ELF_GREGSET_T_REG_INDEX_PC 26 |
| 81 | |
| 82 | /* New gdbarch API for corefile registers. |
| 83 | Given a section name and size, create a struct reg object |
| 84 | with a supply_register and a collect_register method. */ |
| 85 | |
| 86 | /* Copy register value of REGNUM from regset to regcache. |
| 87 | If REGNUM is -1, do this for all gp registers in regset. */ |
| 88 | |
| 89 | static void |
| 90 | am33_supply_gregset_method (const struct regset *regset, |
| 91 | struct regcache *regcache, |
| 92 | int regnum, const void *gregs, size_t len) |
| 93 | { |
| 94 | char zerobuf[MAX_REGISTER_SIZE]; |
| 95 | const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs; |
| 96 | int i; |
| 97 | |
| 98 | gdb_assert (len == sizeof (mn10300_elf_gregset_t)); |
| 99 | |
| 100 | switch (regnum) { |
| 101 | case E_D0_REGNUM: |
| 102 | regcache_raw_supply (regcache, E_D0_REGNUM, |
| 103 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); |
| 104 | break; |
| 105 | case E_D1_REGNUM: |
| 106 | regcache_raw_supply (regcache, E_D1_REGNUM, |
| 107 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); |
| 108 | break; |
| 109 | case E_D2_REGNUM: |
| 110 | regcache_raw_supply (regcache, E_D2_REGNUM, |
| 111 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); |
| 112 | break; |
| 113 | case E_D3_REGNUM: |
| 114 | regcache_raw_supply (regcache, E_D3_REGNUM, |
| 115 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); |
| 116 | break; |
| 117 | case E_A0_REGNUM: |
| 118 | regcache_raw_supply (regcache, E_A0_REGNUM, |
| 119 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); |
| 120 | break; |
| 121 | case E_A1_REGNUM: |
| 122 | regcache_raw_supply (regcache, E_A1_REGNUM, |
| 123 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); |
| 124 | break; |
| 125 | case E_A2_REGNUM: |
| 126 | regcache_raw_supply (regcache, E_A2_REGNUM, |
| 127 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); |
| 128 | break; |
| 129 | case E_A3_REGNUM: |
| 130 | regcache_raw_supply (regcache, E_A3_REGNUM, |
| 131 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); |
| 132 | break; |
| 133 | case E_SP_REGNUM: |
| 134 | regcache_raw_supply (regcache, E_SP_REGNUM, |
| 135 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); |
| 136 | break; |
| 137 | case E_PC_REGNUM: |
| 138 | regcache_raw_supply (regcache, E_PC_REGNUM, |
| 139 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); |
| 140 | break; |
| 141 | case E_MDR_REGNUM: |
| 142 | regcache_raw_supply (regcache, E_MDR_REGNUM, |
| 143 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); |
| 144 | break; |
| 145 | case E_PSW_REGNUM: |
| 146 | regcache_raw_supply (regcache, E_PSW_REGNUM, |
| 147 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); |
| 148 | break; |
| 149 | case E_LIR_REGNUM: |
| 150 | regcache_raw_supply (regcache, E_LIR_REGNUM, |
| 151 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); |
| 152 | break; |
| 153 | case E_LAR_REGNUM: |
| 154 | regcache_raw_supply (regcache, E_LAR_REGNUM, |
| 155 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); |
| 156 | break; |
| 157 | case E_MDRQ_REGNUM: |
| 158 | regcache_raw_supply (regcache, E_MDRQ_REGNUM, |
| 159 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); |
| 160 | break; |
| 161 | case E_E0_REGNUM: |
| 162 | regcache_raw_supply (regcache, E_E0_REGNUM, |
| 163 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); |
| 164 | break; |
| 165 | case E_E1_REGNUM: |
| 166 | regcache_raw_supply (regcache, E_E1_REGNUM, |
| 167 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); |
| 168 | break; |
| 169 | case E_E2_REGNUM: |
| 170 | regcache_raw_supply (regcache, E_E2_REGNUM, |
| 171 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); |
| 172 | break; |
| 173 | case E_E3_REGNUM: |
| 174 | regcache_raw_supply (regcache, E_E3_REGNUM, |
| 175 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); |
| 176 | break; |
| 177 | case E_E4_REGNUM: |
| 178 | regcache_raw_supply (regcache, E_E4_REGNUM, |
| 179 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); |
| 180 | break; |
| 181 | case E_E5_REGNUM: |
| 182 | regcache_raw_supply (regcache, E_E5_REGNUM, |
| 183 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); |
| 184 | break; |
| 185 | case E_E6_REGNUM: |
| 186 | regcache_raw_supply (regcache, E_E6_REGNUM, |
| 187 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); |
| 188 | break; |
| 189 | case E_E7_REGNUM: |
| 190 | regcache_raw_supply (regcache, E_E7_REGNUM, |
| 191 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); |
| 192 | break; |
| 193 | |
| 194 | /* ssp, msp, and usp are inaccessible. */ |
| 195 | case E_E8_REGNUM: |
| 196 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 197 | regcache_raw_supply (regcache, E_E8_REGNUM, zerobuf); |
| 198 | break; |
| 199 | case E_E9_REGNUM: |
| 200 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 201 | regcache_raw_supply (regcache, E_E9_REGNUM, zerobuf); |
| 202 | break; |
| 203 | case E_E10_REGNUM: |
| 204 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 205 | regcache_raw_supply (regcache, E_E10_REGNUM, zerobuf); |
| 206 | |
| 207 | break; |
| 208 | case E_MCRH_REGNUM: |
| 209 | regcache_raw_supply (regcache, E_MCRH_REGNUM, |
| 210 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); |
| 211 | break; |
| 212 | case E_MCRL_REGNUM: |
| 213 | regcache_raw_supply (regcache, E_MCRL_REGNUM, |
| 214 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); |
| 215 | break; |
| 216 | case E_MCVF_REGNUM: |
| 217 | regcache_raw_supply (regcache, E_MCVF_REGNUM, |
| 218 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); |
| 219 | break; |
| 220 | case E_FPCR_REGNUM: |
| 221 | /* FPCR is numbered among the GP regs, but handled as an FP reg. |
| 222 | Do nothing. */ |
| 223 | break; |
| 224 | case E_FPCR_REGNUM + 1: |
| 225 | /* The two unused registers beyond fpcr are inaccessible. */ |
| 226 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 227 | regcache_raw_supply (regcache, E_FPCR_REGNUM + 1, zerobuf); |
| 228 | break; |
| 229 | case E_FPCR_REGNUM + 2: |
| 230 | memset (zerobuf, 0, MAX_REGISTER_SIZE); |
| 231 | regcache_raw_supply (regcache, E_FPCR_REGNUM + 2, zerobuf); |
| 232 | break; |
| 233 | default: /* An error, obviously, but should we error out? */ |
| 234 | break; |
| 235 | case -1: |
| 236 | for (i = 0; i < MN10300_ELF_NGREG; i++) |
| 237 | am33_supply_gregset_method (regset, regcache, i, gregs, len); |
| 238 | break; |
| 239 | } |
| 240 | return; |
| 241 | } |
| 242 | |
| 243 | /* Copy fp register value of REGNUM from regset to regcache. |
| 244 | If REGNUM is -1, do this for all fp registers in regset. */ |
| 245 | |
| 246 | static void |
| 247 | am33_supply_fpregset_method (const struct regset *regset, |
| 248 | struct regcache *regcache, |
| 249 | int regnum, const void *fpregs, size_t len) |
| 250 | { |
| 251 | const mn10300_elf_fpregset_t *fpregset = fpregs; |
| 252 | |
| 253 | gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); |
| 254 | |
| 255 | if (regnum == -1) |
| 256 | { |
| 257 | int i; |
| 258 | |
| 259 | for (i = 0; i < MN10300_ELF_NFPREG; i++) |
| 260 | am33_supply_fpregset_method (regset, regcache, |
| 261 | E_FS0_REGNUM + i, fpregs, len); |
| 262 | am33_supply_fpregset_method (regset, regcache, |
| 263 | E_FPCR_REGNUM, fpregs, len); |
| 264 | } |
| 265 | else if (regnum == E_FPCR_REGNUM) |
| 266 | regcache_raw_supply (regcache, E_FPCR_REGNUM, |
| 267 | &fpregset->fpcr); |
| 268 | else if (E_FS0_REGNUM <= regnum && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) |
| 269 | regcache_raw_supply (regcache, regnum, |
| 270 | &fpregset->fpregs[regnum - E_FS0_REGNUM]); |
| 271 | |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | /* Copy register values from regcache to regset. */ |
| 276 | |
| 277 | static void |
| 278 | am33_collect_gregset_method (const struct regset *regset, |
| 279 | const struct regcache *regcache, |
| 280 | int regnum, void *gregs, size_t len) |
| 281 | { |
| 282 | mn10300_elf_gregset_t *regp = gregs; |
| 283 | int i; |
| 284 | |
| 285 | gdb_assert (len == sizeof (mn10300_elf_gregset_t)); |
| 286 | |
| 287 | switch (regnum) { |
| 288 | case E_D0_REGNUM: |
| 289 | regcache_raw_collect (regcache, E_D0_REGNUM, |
| 290 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0)); |
| 291 | break; |
| 292 | case E_D1_REGNUM: |
| 293 | regcache_raw_collect (regcache, E_D1_REGNUM, |
| 294 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1)); |
| 295 | break; |
| 296 | case E_D2_REGNUM: |
| 297 | regcache_raw_collect (regcache, E_D2_REGNUM, |
| 298 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2)); |
| 299 | break; |
| 300 | case E_D3_REGNUM: |
| 301 | regcache_raw_collect (regcache, E_D3_REGNUM, |
| 302 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3)); |
| 303 | break; |
| 304 | case E_A0_REGNUM: |
| 305 | regcache_raw_collect (regcache, E_A0_REGNUM, |
| 306 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0)); |
| 307 | break; |
| 308 | case E_A1_REGNUM: |
| 309 | regcache_raw_collect (regcache, E_A1_REGNUM, |
| 310 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1)); |
| 311 | break; |
| 312 | case E_A2_REGNUM: |
| 313 | regcache_raw_collect (regcache, E_A2_REGNUM, |
| 314 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2)); |
| 315 | break; |
| 316 | case E_A3_REGNUM: |
| 317 | regcache_raw_collect (regcache, E_A3_REGNUM, |
| 318 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3)); |
| 319 | break; |
| 320 | case E_SP_REGNUM: |
| 321 | regcache_raw_collect (regcache, E_SP_REGNUM, |
| 322 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP)); |
| 323 | break; |
| 324 | case E_PC_REGNUM: |
| 325 | regcache_raw_collect (regcache, E_PC_REGNUM, |
| 326 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC)); |
| 327 | break; |
| 328 | case E_MDR_REGNUM: |
| 329 | regcache_raw_collect (regcache, E_MDR_REGNUM, |
| 330 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR)); |
| 331 | break; |
| 332 | case E_PSW_REGNUM: |
| 333 | regcache_raw_collect (regcache, E_PSW_REGNUM, |
| 334 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW)); |
| 335 | break; |
| 336 | case E_LIR_REGNUM: |
| 337 | regcache_raw_collect (regcache, E_LIR_REGNUM, |
| 338 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR)); |
| 339 | break; |
| 340 | case E_LAR_REGNUM: |
| 341 | regcache_raw_collect (regcache, E_LAR_REGNUM, |
| 342 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR)); |
| 343 | break; |
| 344 | case E_MDRQ_REGNUM: |
| 345 | regcache_raw_collect (regcache, E_MDRQ_REGNUM, |
| 346 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ)); |
| 347 | break; |
| 348 | case E_E0_REGNUM: |
| 349 | regcache_raw_collect (regcache, E_E0_REGNUM, |
| 350 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0)); |
| 351 | break; |
| 352 | case E_E1_REGNUM: |
| 353 | regcache_raw_collect (regcache, E_E1_REGNUM, |
| 354 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1)); |
| 355 | break; |
| 356 | case E_E2_REGNUM: |
| 357 | regcache_raw_collect (regcache, E_E2_REGNUM, |
| 358 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2)); |
| 359 | break; |
| 360 | case E_E3_REGNUM: |
| 361 | regcache_raw_collect (regcache, E_E3_REGNUM, |
| 362 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3)); |
| 363 | break; |
| 364 | case E_E4_REGNUM: |
| 365 | regcache_raw_collect (regcache, E_E4_REGNUM, |
| 366 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4)); |
| 367 | break; |
| 368 | case E_E5_REGNUM: |
| 369 | regcache_raw_collect (regcache, E_E5_REGNUM, |
| 370 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5)); |
| 371 | break; |
| 372 | case E_E6_REGNUM: |
| 373 | regcache_raw_collect (regcache, E_E6_REGNUM, |
| 374 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6)); |
| 375 | break; |
| 376 | case E_E7_REGNUM: |
| 377 | regcache_raw_collect (regcache, E_E7_REGNUM, |
| 378 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7)); |
| 379 | break; |
| 380 | |
| 381 | /* ssp, msp, and usp are inaccessible. */ |
| 382 | case E_E8_REGNUM: |
| 383 | /* The gregset struct has noplace to put this: do nothing. */ |
| 384 | break; |
| 385 | case E_E9_REGNUM: |
| 386 | /* The gregset struct has noplace to put this: do nothing. */ |
| 387 | break; |
| 388 | case E_E10_REGNUM: |
| 389 | /* The gregset struct has noplace to put this: do nothing. */ |
| 390 | break; |
| 391 | case E_MCRH_REGNUM: |
| 392 | regcache_raw_collect (regcache, E_MCRH_REGNUM, |
| 393 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH)); |
| 394 | break; |
| 395 | case E_MCRL_REGNUM: |
| 396 | regcache_raw_collect (regcache, E_MCRL_REGNUM, |
| 397 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL)); |
| 398 | break; |
| 399 | case E_MCVF_REGNUM: |
| 400 | regcache_raw_collect (regcache, E_MCVF_REGNUM, |
| 401 | (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF)); |
| 402 | break; |
| 403 | case E_FPCR_REGNUM: |
| 404 | /* FPCR is numbered among the GP regs, but handled as an FP reg. |
| 405 | Do nothing. */ |
| 406 | break; |
| 407 | case E_FPCR_REGNUM + 1: |
| 408 | /* The gregset struct has noplace to put this: do nothing. */ |
| 409 | break; |
| 410 | case E_FPCR_REGNUM + 2: |
| 411 | /* The gregset struct has noplace to put this: do nothing. */ |
| 412 | break; |
| 413 | default: /* An error, obviously, but should we error out? */ |
| 414 | break; |
| 415 | case -1: |
| 416 | for (i = 0; i < MN10300_ELF_NGREG; i++) |
| 417 | am33_collect_gregset_method (regset, regcache, i, gregs, len); |
| 418 | break; |
| 419 | } |
| 420 | return; |
| 421 | } |
| 422 | |
| 423 | /* Copy fp register values from regcache to regset. */ |
| 424 | |
| 425 | static void |
| 426 | am33_collect_fpregset_method (const struct regset *regset, |
| 427 | const struct regcache *regcache, |
| 428 | int regnum, void *fpregs, size_t len) |
| 429 | { |
| 430 | mn10300_elf_fpregset_t *fpregset = fpregs; |
| 431 | |
| 432 | gdb_assert (len == sizeof (mn10300_elf_fpregset_t)); |
| 433 | |
| 434 | if (regnum == -1) |
| 435 | { |
| 436 | int i; |
| 437 | for (i = 0; i < MN10300_ELF_NFPREG; i++) |
| 438 | am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i, |
| 439 | fpregs, len); |
| 440 | am33_collect_fpregset_method (regset, regcache, |
| 441 | E_FPCR_REGNUM, fpregs, len); |
| 442 | } |
| 443 | else if (regnum == E_FPCR_REGNUM) |
| 444 | regcache_raw_collect (regcache, E_FPCR_REGNUM, |
| 445 | &fpregset->fpcr); |
| 446 | else if (E_FS0_REGNUM <= regnum |
| 447 | && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG) |
| 448 | regcache_raw_collect (regcache, regnum, |
| 449 | &fpregset->fpregs[regnum - E_FS0_REGNUM]); |
| 450 | |
| 451 | return; |
| 452 | } |
| 453 | |
| 454 | /* Create a struct regset from a corefile register section. */ |
| 455 | |
| 456 | static const struct regset * |
| 457 | am33_regset_from_core_section (struct gdbarch *gdbarch, |
| 458 | const char *sect_name, |
| 459 | size_t sect_size) |
| 460 | { |
| 461 | /* We will call regset_alloc, and pass the names of the supply and |
| 462 | collect methods. */ |
| 463 | |
| 464 | if (sect_size == sizeof (mn10300_elf_fpregset_t)) |
| 465 | return regset_alloc (gdbarch, |
| 466 | am33_supply_fpregset_method, |
| 467 | am33_collect_fpregset_method); |
| 468 | else |
| 469 | return regset_alloc (gdbarch, |
| 470 | am33_supply_gregset_method, |
| 471 | am33_collect_gregset_method); |
| 472 | } |
| 473 | \f |
| 474 | static void |
| 475 | am33_linux_sigframe_cache_init (const struct tramp_frame *self, |
| 476 | struct frame_info *next_frame, |
| 477 | struct trad_frame_cache *this_cache, |
| 478 | CORE_ADDR func); |
| 479 | |
| 480 | static const struct tramp_frame am33_linux_sigframe = { |
| 481 | SIGTRAMP_FRAME, |
| 482 | 1, |
| 483 | { |
| 484 | /* mov 119,d0 */ |
| 485 | { 0x2c, -1 }, |
| 486 | { 0x77, -1 }, |
| 487 | { 0x00, -1 }, |
| 488 | /* syscall 0 */ |
| 489 | { 0xf0, -1 }, |
| 490 | { 0xe0, -1 }, |
| 491 | { TRAMP_SENTINEL_INSN, -1 } |
| 492 | }, |
| 493 | am33_linux_sigframe_cache_init |
| 494 | }; |
| 495 | |
| 496 | static const struct tramp_frame am33_linux_rt_sigframe = { |
| 497 | SIGTRAMP_FRAME, |
| 498 | 1, |
| 499 | { |
| 500 | /* mov 173,d0 */ |
| 501 | { 0x2c, -1 }, |
| 502 | { 0xad, -1 }, |
| 503 | { 0x00, -1 }, |
| 504 | /* syscall 0 */ |
| 505 | { 0xf0, -1 }, |
| 506 | { 0xe0, -1 }, |
| 507 | { TRAMP_SENTINEL_INSN, -1 } |
| 508 | }, |
| 509 | am33_linux_sigframe_cache_init |
| 510 | }; |
| 511 | |
| 512 | /* Relevant struct definitions for signal handling... |
| 513 | |
| 514 | From arch/mn10300/kernel/sigframe.h: |
| 515 | |
| 516 | struct sigframe |
| 517 | { |
| 518 | void (*pretcode)(void); |
| 519 | int sig; |
| 520 | struct sigcontext sc; |
| 521 | struct fpucontext fpuctx; |
| 522 | unsigned long extramask[_NSIG_WORDS-1]; |
| 523 | char retcode[8]; |
| 524 | }; |
| 525 | |
| 526 | struct rt_sigframe |
| 527 | { |
| 528 | void (*pretcode)(void); |
| 529 | int sig; |
| 530 | struct siginfo *pinfo; |
| 531 | void *puc; |
| 532 | struct siginfo info; |
| 533 | struct ucontext uc; |
| 534 | struct fpucontext fpuctx; |
| 535 | char retcode[8]; |
| 536 | }; |
| 537 | |
| 538 | From include/asm-mn10300/ucontext.h: |
| 539 | |
| 540 | struct ucontext { |
| 541 | unsigned long uc_flags; |
| 542 | struct ucontext *uc_link; |
| 543 | stack_t uc_stack; |
| 544 | struct sigcontext uc_mcontext; |
| 545 | sigset_t uc_sigmask; |
| 546 | }; |
| 547 | |
| 548 | From include/asm-mn10300/sigcontext.h: |
| 549 | |
| 550 | struct fpucontext { |
| 551 | unsigned long fs[32]; |
| 552 | unsigned long fpcr; |
| 553 | }; |
| 554 | |
| 555 | struct sigcontext { |
| 556 | unsigned long d0; |
| 557 | unsigned long d1; |
| 558 | unsigned long d2; |
| 559 | unsigned long d3; |
| 560 | unsigned long a0; |
| 561 | unsigned long a1; |
| 562 | unsigned long a2; |
| 563 | unsigned long a3; |
| 564 | unsigned long e0; |
| 565 | unsigned long e1; |
| 566 | unsigned long e2; |
| 567 | unsigned long e3; |
| 568 | unsigned long e4; |
| 569 | unsigned long e5; |
| 570 | unsigned long e6; |
| 571 | unsigned long e7; |
| 572 | unsigned long lar; |
| 573 | unsigned long lir; |
| 574 | unsigned long mdr; |
| 575 | unsigned long mcvf; |
| 576 | unsigned long mcrl; |
| 577 | unsigned long mcrh; |
| 578 | unsigned long mdrq; |
| 579 | unsigned long sp; |
| 580 | unsigned long epsw; |
| 581 | unsigned long pc; |
| 582 | struct fpucontext *fpucontext; |
| 583 | unsigned long oldmask; |
| 584 | }; */ |
| 585 | |
| 586 | |
| 587 | #define AM33_SIGCONTEXT_D0 0 |
| 588 | #define AM33_SIGCONTEXT_D1 4 |
| 589 | #define AM33_SIGCONTEXT_D2 8 |
| 590 | #define AM33_SIGCONTEXT_D3 12 |
| 591 | #define AM33_SIGCONTEXT_A0 16 |
| 592 | #define AM33_SIGCONTEXT_A1 20 |
| 593 | #define AM33_SIGCONTEXT_A2 24 |
| 594 | #define AM33_SIGCONTEXT_A3 28 |
| 595 | #define AM33_SIGCONTEXT_E0 32 |
| 596 | #define AM33_SIGCONTEXT_E1 36 |
| 597 | #define AM33_SIGCONTEXT_E2 40 |
| 598 | #define AM33_SIGCONTEXT_E3 44 |
| 599 | #define AM33_SIGCONTEXT_E4 48 |
| 600 | #define AM33_SIGCONTEXT_E5 52 |
| 601 | #define AM33_SIGCONTEXT_E6 56 |
| 602 | #define AM33_SIGCONTEXT_E7 60 |
| 603 | #define AM33_SIGCONTEXT_LAR 64 |
| 604 | #define AM33_SIGCONTEXT_LIR 68 |
| 605 | #define AM33_SIGCONTEXT_MDR 72 |
| 606 | #define AM33_SIGCONTEXT_MCVF 76 |
| 607 | #define AM33_SIGCONTEXT_MCRL 80 |
| 608 | #define AM33_SIGCONTEXT_MCRH 84 |
| 609 | #define AM33_SIGCONTEXT_MDRQ 88 |
| 610 | #define AM33_SIGCONTEXT_SP 92 |
| 611 | #define AM33_SIGCONTEXT_EPSW 96 |
| 612 | #define AM33_SIGCONTEXT_PC 100 |
| 613 | #define AM33_SIGCONTEXT_FPUCONTEXT 104 |
| 614 | |
| 615 | |
| 616 | static void |
| 617 | am33_linux_sigframe_cache_init (const struct tramp_frame *self, |
| 618 | struct frame_info *next_frame, |
| 619 | struct trad_frame_cache *this_cache, |
| 620 | CORE_ADDR func) |
| 621 | { |
| 622 | CORE_ADDR sc_base, fpubase; |
| 623 | int i; |
| 624 | |
| 625 | sc_base = frame_unwind_register_unsigned (next_frame, E_SP_REGNUM); |
| 626 | if (self == &am33_linux_sigframe) |
| 627 | { |
| 628 | sc_base += 8; |
| 629 | } |
| 630 | else |
| 631 | { |
| 632 | sc_base += 12; |
| 633 | sc_base = get_frame_memory_unsigned (next_frame, sc_base, 4); |
| 634 | sc_base += 20; |
| 635 | } |
| 636 | |
| 637 | trad_frame_set_reg_addr (this_cache, E_D0_REGNUM, |
| 638 | sc_base + AM33_SIGCONTEXT_D0); |
| 639 | trad_frame_set_reg_addr (this_cache, E_D1_REGNUM, |
| 640 | sc_base + AM33_SIGCONTEXT_D1); |
| 641 | trad_frame_set_reg_addr (this_cache, E_D2_REGNUM, |
| 642 | sc_base + AM33_SIGCONTEXT_D2); |
| 643 | trad_frame_set_reg_addr (this_cache, E_D3_REGNUM, |
| 644 | sc_base + AM33_SIGCONTEXT_D3); |
| 645 | |
| 646 | trad_frame_set_reg_addr (this_cache, E_A0_REGNUM, |
| 647 | sc_base + AM33_SIGCONTEXT_A0); |
| 648 | trad_frame_set_reg_addr (this_cache, E_A1_REGNUM, |
| 649 | sc_base + AM33_SIGCONTEXT_A1); |
| 650 | trad_frame_set_reg_addr (this_cache, E_A2_REGNUM, |
| 651 | sc_base + AM33_SIGCONTEXT_A2); |
| 652 | trad_frame_set_reg_addr (this_cache, E_A3_REGNUM, |
| 653 | sc_base + AM33_SIGCONTEXT_A3); |
| 654 | |
| 655 | trad_frame_set_reg_addr (this_cache, E_E0_REGNUM, |
| 656 | sc_base + AM33_SIGCONTEXT_E0); |
| 657 | trad_frame_set_reg_addr (this_cache, E_E1_REGNUM, |
| 658 | sc_base + AM33_SIGCONTEXT_E1); |
| 659 | trad_frame_set_reg_addr (this_cache, E_E2_REGNUM, |
| 660 | sc_base + AM33_SIGCONTEXT_E2); |
| 661 | trad_frame_set_reg_addr (this_cache, E_E3_REGNUM, |
| 662 | sc_base + AM33_SIGCONTEXT_E3); |
| 663 | trad_frame_set_reg_addr (this_cache, E_E4_REGNUM, |
| 664 | sc_base + AM33_SIGCONTEXT_E4); |
| 665 | trad_frame_set_reg_addr (this_cache, E_E5_REGNUM, |
| 666 | sc_base + AM33_SIGCONTEXT_E5); |
| 667 | trad_frame_set_reg_addr (this_cache, E_E6_REGNUM, |
| 668 | sc_base + AM33_SIGCONTEXT_E6); |
| 669 | trad_frame_set_reg_addr (this_cache, E_E7_REGNUM, |
| 670 | sc_base + AM33_SIGCONTEXT_E7); |
| 671 | |
| 672 | trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM, |
| 673 | sc_base + AM33_SIGCONTEXT_LAR); |
| 674 | trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM, |
| 675 | sc_base + AM33_SIGCONTEXT_LIR); |
| 676 | trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM, |
| 677 | sc_base + AM33_SIGCONTEXT_MDR); |
| 678 | trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM, |
| 679 | sc_base + AM33_SIGCONTEXT_MCVF); |
| 680 | trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM, |
| 681 | sc_base + AM33_SIGCONTEXT_MCRL); |
| 682 | trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM, |
| 683 | sc_base + AM33_SIGCONTEXT_MDRQ); |
| 684 | |
| 685 | trad_frame_set_reg_addr (this_cache, E_SP_REGNUM, |
| 686 | sc_base + AM33_SIGCONTEXT_SP); |
| 687 | trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM, |
| 688 | sc_base + AM33_SIGCONTEXT_EPSW); |
| 689 | trad_frame_set_reg_addr (this_cache, E_PC_REGNUM, |
| 690 | sc_base + AM33_SIGCONTEXT_PC); |
| 691 | |
| 692 | fpubase = get_frame_memory_unsigned (next_frame, |
| 693 | sc_base + AM33_SIGCONTEXT_FPUCONTEXT, 4); |
| 694 | if (fpubase) |
| 695 | { |
| 696 | for (i = 0; i < 32; i++) |
| 697 | { |
| 698 | trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i, |
| 699 | fpubase + 4 * i); |
| 700 | } |
| 701 | trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32); |
| 702 | } |
| 703 | |
| 704 | trad_frame_set_id (this_cache, frame_id_build (sc_base, func)); |
| 705 | } |
| 706 | \f |
| 707 | /* AM33 GNU/Linux osabi has been recognized. |
| 708 | Now's our chance to register our corefile handling. */ |
| 709 | |
| 710 | static void |
| 711 | am33_linux_init_osabi (struct gdbarch_info gdbinfo, struct gdbarch *gdbarch) |
| 712 | { |
| 713 | set_gdbarch_regset_from_core_section (gdbarch, |
| 714 | am33_regset_from_core_section); |
| 715 | set_solib_svr4_fetch_link_map_offsets |
| 716 | (gdbarch, svr4_ilp32_fetch_link_map_offsets); |
| 717 | |
| 718 | tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe); |
| 719 | tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe); |
| 720 | } |
| 721 | |
| 722 | void |
| 723 | _initialize_mn10300_linux_tdep (void) |
| 724 | { |
| 725 | gdbarch_register_osabi (bfd_arch_mn10300, 0, |
| 726 | GDB_OSABI_LINUX, am33_linux_init_osabi); |
| 727 | } |
| 728 | |