gdb/mn10300-linux-tdep.c

   1 /* Target-dependent code for the Matsushita MN10300 for GDB, the GNU debugger.
   2
   3    Copyright (C) 2003-2018 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   const mn10300_elf_greg_t *regp = (const mn10300_elf_greg_t *) gregs;
  90   int i;
  91
  92   gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
  93
  94   switch (regnum) {
  95   case E_D0_REGNUM:
  96     regcache_raw_supply (regcache, E_D0_REGNUM,
  97                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
  98     break;
  99   case E_D1_REGNUM:
 100     regcache_raw_supply (regcache, E_D1_REGNUM,
 101                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
 102     break;
 103   case E_D2_REGNUM:
 104     regcache_raw_supply (regcache, E_D2_REGNUM,
 105                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
 106     break;
 107   case E_D3_REGNUM:
 108     regcache_raw_supply (regcache, E_D3_REGNUM,
 109                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
 110     break;
 111   case E_A0_REGNUM:
 112     regcache_raw_supply (regcache, E_A0_REGNUM,
 113                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
 114     break;
 115   case E_A1_REGNUM:
 116     regcache_raw_supply (regcache, E_A1_REGNUM,
 117                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
 118     break;
 119   case E_A2_REGNUM:
 120     regcache_raw_supply (regcache, E_A2_REGNUM,
 121                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
 122     break;
 123   case E_A3_REGNUM:
 124     regcache_raw_supply (regcache, E_A3_REGNUM,
 125                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
 126     break;
 127   case E_SP_REGNUM:
 128     regcache_raw_supply (regcache, E_SP_REGNUM,
 129                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
 130     break;
 131   case E_PC_REGNUM:
 132     regcache_raw_supply (regcache, E_PC_REGNUM,
 133                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
 134     break;
 135   case E_MDR_REGNUM:
 136     regcache_raw_supply (regcache, E_MDR_REGNUM,
 137                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
 138     break;
 139   case E_PSW_REGNUM:
 140     regcache_raw_supply (regcache, E_PSW_REGNUM,
 141                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
 142     break;
 143   case E_LIR_REGNUM:
 144     regcache_raw_supply (regcache, E_LIR_REGNUM,
 145                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
 146     break;
 147   case E_LAR_REGNUM:
 148     regcache_raw_supply (regcache, E_LAR_REGNUM,
 149                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
 150     break;
 151   case E_MDRQ_REGNUM:
 152     regcache_raw_supply (regcache, E_MDRQ_REGNUM,
 153                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
 154     break;
 155   case E_E0_REGNUM:
 156     regcache_raw_supply (regcache, E_E0_REGNUM,
 157                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
 158     break;
 159   case E_E1_REGNUM:
 160     regcache_raw_supply (regcache, E_E1_REGNUM,
 161                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
 162     break;
 163   case E_E2_REGNUM:
 164     regcache_raw_supply (regcache, E_E2_REGNUM,
 165                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
 166     break;
 167   case E_E3_REGNUM:
 168     regcache_raw_supply (regcache, E_E3_REGNUM,
 169                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
 170     break;
 171   case E_E4_REGNUM:
 172     regcache_raw_supply (regcache, E_E4_REGNUM,
 173                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
 174     break;
 175   case E_E5_REGNUM:
 176     regcache_raw_supply (regcache, E_E5_REGNUM,
 177                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
 178     break;
 179   case E_E6_REGNUM:
 180     regcache_raw_supply (regcache, E_E6_REGNUM,
 181                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
 182     break;
 183   case E_E7_REGNUM:
 184     regcache_raw_supply (regcache, E_E7_REGNUM,
 185                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
 186     break;
 187
 188     /* ssp, msp, and usp are inaccessible.  */
 189   case E_E8_REGNUM:
 190     regcache->raw_supply_zeroed (E_E8_REGNUM);
 191     break;
 192   case E_E9_REGNUM:
 193     regcache->raw_supply_zeroed (E_E9_REGNUM);
 194     break;
 195   case E_E10_REGNUM:
 196     regcache->raw_supply_zeroed (E_E10_REGNUM);
 197     break;
 198   case E_MCRH_REGNUM:
 199     regcache_raw_supply (regcache, E_MCRH_REGNUM,
 200                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
 201     break;
 202   case E_MCRL_REGNUM:
 203     regcache_raw_supply (regcache, E_MCRL_REGNUM,
 204                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
 205     break;
 206   case E_MCVF_REGNUM:
 207     regcache_raw_supply (regcache, E_MCVF_REGNUM,
 208                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
 209     break;
 210   case E_FPCR_REGNUM:
 211     /* FPCR is numbered among the GP regs, but handled as an FP reg.
 212        Do nothing.  */
 213     break;
 214   case E_FPCR_REGNUM + 1:
 215     /* The two unused registers beyond fpcr are inaccessible.  */
 216     regcache->raw_supply_zeroed (E_FPCR_REGNUM + 1);
 217     break;
 218   case E_FPCR_REGNUM + 2:
 219     regcache->raw_supply_zeroed (E_FPCR_REGNUM + 2);
 220     break;
 221   default:      /* An error, obviously, but should we error out?  */
 222     break;
 223   case -1:
 224     for (i = 0; i < MN10300_ELF_NGREG; i++)
 225       am33_supply_gregset_method (regset, regcache, i, gregs, len);
 226     break;
 227   }
 228   return;
 229 }
 230
 231 /* Copy fp register value of REGNUM from regset to regcache.
 232    If REGNUM is -1, do this for all fp registers in regset.  */
 233
 234 static void
 235 am33_supply_fpregset_method (const struct regset *regset,
 236                              struct regcache *regcache,
 237                              int regnum, const void *fpregs, size_t len)
 238 {
 239   const mn10300_elf_fpregset_t *fpregset
 240     = (const mn10300_elf_fpregset_t *) fpregs;
 241
 242   gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
 243
 244   if (regnum == -1)
 245     {
 246       int i;
 247
 248       for (i = 0; i < MN10300_ELF_NFPREG; i++)
 249         am33_supply_fpregset_method (regset, regcache,
 250                                      E_FS0_REGNUM + i, fpregs, len);
 251       am33_supply_fpregset_method (regset, regcache,
 252                                    E_FPCR_REGNUM, fpregs, len);
 253     }
 254   else if (regnum == E_FPCR_REGNUM)
 255     regcache_raw_supply (regcache, E_FPCR_REGNUM,
 256                          &fpregset->fpcr);
 257   else if (E_FS0_REGNUM <= regnum
 258            && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
 259     regcache_raw_supply (regcache, regnum,
 260                          &fpregset->fpregs[regnum - E_FS0_REGNUM]);
 261
 262   return;
 263 }
 264
 265 /* Copy register values from regcache to regset.  */
 266
 267 static void
 268 am33_collect_gregset_method (const struct regset *regset,
 269                              const struct regcache *regcache,
 270                              int regnum, void *gregs, size_t len)
 271 {
 272   mn10300_elf_gregset_t *regp = (gdb_byte (*)[28][4]) gregs;
 273   int i;
 274
 275   gdb_assert (len >= sizeof (mn10300_elf_gregset_t));
 276
 277   switch (regnum) {
 278   case E_D0_REGNUM:
 279     regcache_raw_collect (regcache, E_D0_REGNUM,
 280                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D0));
 281     break;
 282   case E_D1_REGNUM:
 283     regcache_raw_collect (regcache, E_D1_REGNUM,
 284                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D1));
 285     break;
 286   case E_D2_REGNUM:
 287     regcache_raw_collect (regcache, E_D2_REGNUM,
 288                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D2));
 289     break;
 290   case E_D3_REGNUM:
 291     regcache_raw_collect (regcache, E_D3_REGNUM,
 292                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_D3));
 293     break;
 294   case E_A0_REGNUM:
 295     regcache_raw_collect (regcache, E_A0_REGNUM,
 296                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A0));
 297     break;
 298   case E_A1_REGNUM:
 299     regcache_raw_collect (regcache, E_A1_REGNUM,
 300                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A1));
 301     break;
 302   case E_A2_REGNUM:
 303     regcache_raw_collect (regcache, E_A2_REGNUM,
 304                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A2));
 305     break;
 306   case E_A3_REGNUM:
 307     regcache_raw_collect (regcache, E_A3_REGNUM,
 308                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_A3));
 309     break;
 310   case E_SP_REGNUM:
 311     regcache_raw_collect (regcache, E_SP_REGNUM,
 312                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_SP));
 313     break;
 314   case E_PC_REGNUM:
 315     regcache_raw_collect (regcache, E_PC_REGNUM,
 316                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_PC));
 317     break;
 318   case E_MDR_REGNUM:
 319     regcache_raw_collect (regcache, E_MDR_REGNUM,
 320                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDR));
 321     break;
 322   case E_PSW_REGNUM:
 323     regcache_raw_collect (regcache, E_PSW_REGNUM,
 324                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_EPSW));
 325     break;
 326   case E_LIR_REGNUM:
 327     regcache_raw_collect (regcache, E_LIR_REGNUM,
 328                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LIR));
 329     break;
 330   case E_LAR_REGNUM:
 331     regcache_raw_collect (regcache, E_LAR_REGNUM,
 332                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_LAR));
 333     break;
 334   case E_MDRQ_REGNUM:
 335     regcache_raw_collect (regcache, E_MDRQ_REGNUM,
 336                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MDRQ));
 337     break;
 338   case E_E0_REGNUM:
 339     regcache_raw_collect (regcache, E_E0_REGNUM,
 340                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E0));
 341     break;
 342   case E_E1_REGNUM:
 343     regcache_raw_collect (regcache, E_E1_REGNUM,
 344                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E1));
 345     break;
 346   case E_E2_REGNUM:
 347     regcache_raw_collect (regcache, E_E2_REGNUM,
 348                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E2));
 349     break;
 350   case E_E3_REGNUM:
 351     regcache_raw_collect (regcache, E_E3_REGNUM,
 352                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E3));
 353     break;
 354   case E_E4_REGNUM:
 355     regcache_raw_collect (regcache, E_E4_REGNUM,
 356                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E4));
 357     break;
 358   case E_E5_REGNUM:
 359     regcache_raw_collect (regcache, E_E5_REGNUM,
 360                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E5));
 361     break;
 362   case E_E6_REGNUM:
 363     regcache_raw_collect (regcache, E_E6_REGNUM,
 364                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E6));
 365     break;
 366   case E_E7_REGNUM:
 367     regcache_raw_collect (regcache, E_E7_REGNUM,
 368                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_E7));
 369     break;
 370
 371     /* ssp, msp, and usp are inaccessible.  */
 372   case E_E8_REGNUM:
 373     /* The gregset struct has noplace to put this: do nothing.  */
 374     break;
 375   case E_E9_REGNUM:
 376     /* The gregset struct has noplace to put this: do nothing.  */
 377     break;
 378   case E_E10_REGNUM:
 379     /* The gregset struct has noplace to put this: do nothing.  */
 380     break;
 381   case E_MCRH_REGNUM:
 382     regcache_raw_collect (regcache, E_MCRH_REGNUM,
 383                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRH));
 384     break;
 385   case E_MCRL_REGNUM:
 386     regcache_raw_collect (regcache, E_MCRL_REGNUM,
 387                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCRL));
 388     break;
 389   case E_MCVF_REGNUM:
 390     regcache_raw_collect (regcache, E_MCVF_REGNUM,
 391                          (regp + MN10300_ELF_GREGSET_T_REG_INDEX_MCVF));
 392     break;
 393   case E_FPCR_REGNUM:
 394     /* FPCR is numbered among the GP regs, but handled as an FP reg.
 395        Do nothing.  */
 396     break;
 397   case E_FPCR_REGNUM + 1:
 398     /* The gregset struct has noplace to put this: do nothing.  */
 399     break;
 400   case E_FPCR_REGNUM + 2:
 401     /* The gregset struct has noplace to put this: do nothing.  */
 402     break;
 403   default:      /* An error, obviously, but should we error out?  */
 404     break;
 405   case -1:
 406     for (i = 0; i < MN10300_ELF_NGREG; i++)
 407       am33_collect_gregset_method (regset, regcache, i, gregs, len);
 408     break;
 409   }
 410   return;
 411 }
 412
 413 /* Copy fp register values from regcache to regset.  */
 414
 415 static void
 416 am33_collect_fpregset_method (const struct regset *regset,
 417                               const struct regcache *regcache,
 418                               int regnum, void *fpregs, size_t len)
 419 {
 420   mn10300_elf_fpregset_t *fpregset = (mn10300_elf_fpregset_t *) fpregs;
 421
 422   gdb_assert (len >= sizeof (mn10300_elf_fpregset_t));
 423
 424   if (regnum == -1)
 425     {
 426       int i;
 427       for (i = 0; i < MN10300_ELF_NFPREG; i++)
 428         am33_collect_fpregset_method (regset, regcache, E_FS0_REGNUM + i,
 429                                       fpregs, len);
 430       am33_collect_fpregset_method (regset, regcache,
 431                                     E_FPCR_REGNUM, fpregs, len);
 432     }
 433   else if (regnum == E_FPCR_REGNUM)
 434     regcache_raw_collect (regcache, E_FPCR_REGNUM,
 435                           &fpregset->fpcr);
 436   else if (E_FS0_REGNUM <= regnum
 437            && regnum < E_FS0_REGNUM + MN10300_ELF_NFPREG)
 438     regcache_raw_collect (regcache, regnum,
 439                           &fpregset->fpregs[regnum - E_FS0_REGNUM]);
 440
 441   return;
 442 }
 443
 444 static const struct regset am33_gregset =
 445   {
 446     NULL, am33_supply_gregset_method, am33_collect_gregset_method
 447   };
 448
 449 static const struct regset am33_fpregset =
 450   {
 451     NULL, am33_supply_fpregset_method, am33_collect_fpregset_method
 452   };
 453
 454 /* Iterate over core file register note sections.  */
 455
 456 static void
 457 am33_iterate_over_regset_sections (struct gdbarch *gdbarch,
 458                                    iterate_over_regset_sections_cb *cb,
 459                                    void *cb_data,
 460                                    const struct regcache *regcache)
 461 {
 462   cb (".reg", sizeof (mn10300_elf_gregset_t), &am33_gregset,
 463       NULL, cb_data);
 464   cb (".reg2", sizeof(mn10300_elf_fpregset_t), &am33_fpregset,
 465       NULL, cb_data);
 466 }
 467 \f
 468 static void
 469 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
 470                                 struct frame_info *this_frame,
 471                                 struct trad_frame_cache *this_cache,
 472                                 CORE_ADDR func);
 473
 474 static const struct tramp_frame am33_linux_sigframe = {
 475   SIGTRAMP_FRAME,
 476   1,
 477   {
 478     /* mov     119,d0 */
 479     { 0x2c, -1 },
 480     { 0x77, -1 },
 481     { 0x00, -1 },
 482     /* syscall 0 */
 483     { 0xf0, -1 },
 484     { 0xe0, -1 },
 485     { TRAMP_SENTINEL_INSN, -1 }
 486   },
 487   am33_linux_sigframe_cache_init
 488 };
 489
 490 static const struct tramp_frame am33_linux_rt_sigframe = {
 491   SIGTRAMP_FRAME,
 492   1,
 493   {
 494     /* mov     173,d0 */
 495     { 0x2c, -1 },
 496     { 0xad, -1 },
 497     { 0x00, -1 },
 498     /* syscall 0 */
 499     { 0xf0, -1 },
 500     { 0xe0, -1 },
 501     { TRAMP_SENTINEL_INSN, -1 }
 502   },
 503   am33_linux_sigframe_cache_init
 504 };
 505
 506 /* Relevant struct definitions for signal handling...
 507
 508 From arch/mn10300/kernel/sigframe.h:
 509
 510 struct sigframe
 511 {
 512         void (*pretcode)(void);
 513         int sig;
 514         struct sigcontext *psc;
 515         struct sigcontext sc;
 516         struct fpucontext fpuctx;
 517         unsigned long extramask[_NSIG_WORDS-1];
 518         char retcode[8];
 519 };
 520
 521 struct rt_sigframe
 522 {
 523         void (*pretcode)(void);
 524         int sig;
 525         struct siginfo *pinfo;
 526         void *puc;
 527         struct siginfo info;
 528         struct ucontext uc;
 529         struct fpucontext fpuctx;
 530         char retcode[8];
 531 };
 532
 533 From include/asm-mn10300/ucontext.h:
 534
 535 struct ucontext {
 536         unsigned long     uc_flags;
 537         struct ucontext  *uc_link;
 538         stack_t           uc_stack;
 539         struct sigcontext uc_mcontext;
 540         sigset_t          uc_sigmask;
 541 };
 542
 543 From include/asm-mn10300/sigcontext.h:
 544
 545 struct fpucontext {
 546         unsigned long   fs[32];
 547         unsigned long   fpcr;
 548 };
 549
 550 struct sigcontext {
 551         unsigned long   d0;
 552         unsigned long   d1;
 553         unsigned long   d2;
 554         unsigned long   d3;
 555         unsigned long   a0;
 556         unsigned long   a1;
 557         unsigned long   a2;
 558         unsigned long   a3;
 559         unsigned long   e0;
 560         unsigned long   e1;
 561         unsigned long   e2;
 562         unsigned long   e3;
 563         unsigned long   e4;
 564         unsigned long   e5;
 565         unsigned long   e6;
 566         unsigned long   e7;
 567         unsigned long   lar;
 568         unsigned long   lir;
 569         unsigned long   mdr;
 570         unsigned long   mcvf;
 571         unsigned long   mcrl;
 572         unsigned long   mcrh;
 573         unsigned long   mdrq;
 574         unsigned long   sp;
 575         unsigned long   epsw;
 576         unsigned long   pc;
 577         struct fpucontext *fpucontext;
 578         unsigned long   oldmask;
 579 }; */
 580
 581
 582 #define AM33_SIGCONTEXT_D0 0
 583 #define AM33_SIGCONTEXT_D1 4
 584 #define AM33_SIGCONTEXT_D2 8
 585 #define AM33_SIGCONTEXT_D3 12
 586 #define AM33_SIGCONTEXT_A0 16
 587 #define AM33_SIGCONTEXT_A1 20
 588 #define AM33_SIGCONTEXT_A2 24
 589 #define AM33_SIGCONTEXT_A3 28
 590 #define AM33_SIGCONTEXT_E0 32
 591 #define AM33_SIGCONTEXT_E1 36
 592 #define AM33_SIGCONTEXT_E2 40
 593 #define AM33_SIGCONTEXT_E3 44
 594 #define AM33_SIGCONTEXT_E4 48
 595 #define AM33_SIGCONTEXT_E5 52
 596 #define AM33_SIGCONTEXT_E6 56
 597 #define AM33_SIGCONTEXT_E7 60
 598 #define AM33_SIGCONTEXT_LAR 64
 599 #define AM33_SIGCONTEXT_LIR 68
 600 #define AM33_SIGCONTEXT_MDR 72
 601 #define AM33_SIGCONTEXT_MCVF 76
 602 #define AM33_SIGCONTEXT_MCRL 80
 603 #define AM33_SIGCONTEXT_MCRH 84
 604 #define AM33_SIGCONTEXT_MDRQ 88
 605 #define AM33_SIGCONTEXT_SP 92
 606 #define AM33_SIGCONTEXT_EPSW 96
 607 #define AM33_SIGCONTEXT_PC 100
 608 #define AM33_SIGCONTEXT_FPUCONTEXT 104
 609
 610
 611 static void
 612 am33_linux_sigframe_cache_init (const struct tramp_frame *self,
 613                                 struct frame_info *this_frame,
 614                                 struct trad_frame_cache *this_cache,
 615                                 CORE_ADDR func)
 616 {
 617   CORE_ADDR sc_base, fpubase;
 618   int i;
 619
 620   sc_base = get_frame_register_unsigned (this_frame, E_SP_REGNUM);
 621   if (self == &am33_linux_sigframe)
 622     {
 623       sc_base += 8;
 624       sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
 625     }
 626   else
 627     {
 628       sc_base += 12;
 629       sc_base = get_frame_memory_unsigned (this_frame, sc_base, 4);
 630       sc_base += 20;
 631     }
 632
 633   trad_frame_set_reg_addr (this_cache, E_D0_REGNUM,
 634                            sc_base + AM33_SIGCONTEXT_D0);
 635   trad_frame_set_reg_addr (this_cache, E_D1_REGNUM,
 636                            sc_base + AM33_SIGCONTEXT_D1);
 637   trad_frame_set_reg_addr (this_cache, E_D2_REGNUM,
 638                            sc_base + AM33_SIGCONTEXT_D2);
 639   trad_frame_set_reg_addr (this_cache, E_D3_REGNUM,
 640                            sc_base + AM33_SIGCONTEXT_D3);
 641
 642   trad_frame_set_reg_addr (this_cache, E_A0_REGNUM,
 643                            sc_base + AM33_SIGCONTEXT_A0);
 644   trad_frame_set_reg_addr (this_cache, E_A1_REGNUM,
 645                            sc_base + AM33_SIGCONTEXT_A1);
 646   trad_frame_set_reg_addr (this_cache, E_A2_REGNUM,
 647                            sc_base + AM33_SIGCONTEXT_A2);
 648   trad_frame_set_reg_addr (this_cache, E_A3_REGNUM,
 649                            sc_base + AM33_SIGCONTEXT_A3);
 650
 651   trad_frame_set_reg_addr (this_cache, E_E0_REGNUM,
 652                            sc_base + AM33_SIGCONTEXT_E0);
 653   trad_frame_set_reg_addr (this_cache, E_E1_REGNUM,
 654                            sc_base + AM33_SIGCONTEXT_E1);
 655   trad_frame_set_reg_addr (this_cache, E_E2_REGNUM,
 656                            sc_base + AM33_SIGCONTEXT_E2);
 657   trad_frame_set_reg_addr (this_cache, E_E3_REGNUM,
 658                            sc_base + AM33_SIGCONTEXT_E3);
 659   trad_frame_set_reg_addr (this_cache, E_E4_REGNUM,
 660                            sc_base + AM33_SIGCONTEXT_E4);
 661   trad_frame_set_reg_addr (this_cache, E_E5_REGNUM,
 662                            sc_base + AM33_SIGCONTEXT_E5);
 663   trad_frame_set_reg_addr (this_cache, E_E6_REGNUM,
 664                            sc_base + AM33_SIGCONTEXT_E6);
 665   trad_frame_set_reg_addr (this_cache, E_E7_REGNUM,
 666                            sc_base + AM33_SIGCONTEXT_E7);
 667
 668   trad_frame_set_reg_addr (this_cache, E_LAR_REGNUM,
 669                            sc_base + AM33_SIGCONTEXT_LAR);
 670   trad_frame_set_reg_addr (this_cache, E_LIR_REGNUM,
 671                            sc_base + AM33_SIGCONTEXT_LIR);
 672   trad_frame_set_reg_addr (this_cache, E_MDR_REGNUM,
 673                            sc_base + AM33_SIGCONTEXT_MDR);
 674   trad_frame_set_reg_addr (this_cache, E_MCVF_REGNUM,
 675                            sc_base + AM33_SIGCONTEXT_MCVF);
 676   trad_frame_set_reg_addr (this_cache, E_MCRL_REGNUM,
 677                            sc_base + AM33_SIGCONTEXT_MCRL);
 678   trad_frame_set_reg_addr (this_cache, E_MDRQ_REGNUM,
 679                            sc_base + AM33_SIGCONTEXT_MDRQ);
 680
 681   trad_frame_set_reg_addr (this_cache, E_SP_REGNUM,
 682                            sc_base + AM33_SIGCONTEXT_SP);
 683   trad_frame_set_reg_addr (this_cache, E_PSW_REGNUM,
 684                            sc_base + AM33_SIGCONTEXT_EPSW);
 685   trad_frame_set_reg_addr (this_cache, E_PC_REGNUM,
 686                            sc_base + AM33_SIGCONTEXT_PC);
 687
 688   fpubase = get_frame_memory_unsigned (this_frame,
 689                                        sc_base + AM33_SIGCONTEXT_FPUCONTEXT,
 690                                        4);
 691   if (fpubase)
 692     {
 693       for (i = 0; i < 32; i++)
 694         {
 695           trad_frame_set_reg_addr (this_cache, E_FS0_REGNUM + i,
 696                                    fpubase + 4 * i);
 697         }
 698       trad_frame_set_reg_addr (this_cache, E_FPCR_REGNUM, fpubase + 4 * 32);
 699     }
 700
 701   trad_frame_set_id (this_cache, frame_id_build (sc_base, func));
 702 }
 703 \f
 704 /* AM33 GNU/Linux osabi has been recognized.
 705    Now's our chance to register our corefile handling.  */
 706
 707 static void
 708 am33_linux_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
 709 {
 710   linux_init_abi (info, gdbarch);
 711
 712   set_gdbarch_iterate_over_regset_sections
 713     (gdbarch, am33_iterate_over_regset_sections);
 714   set_solib_svr4_fetch_link_map_offsets
 715     (gdbarch, svr4_ilp32_fetch_link_map_offsets);
 716
 717   tramp_frame_prepend_unwinder (gdbarch, &am33_linux_sigframe);
 718   tramp_frame_prepend_unwinder (gdbarch, &am33_linux_rt_sigframe);
 719 }
 720
 721 void
 722 _initialize_mn10300_linux_tdep (void)
 723 {
 724   gdbarch_register_osabi (bfd_arch_mn10300, 0,
 725                           GDB_OSABI_LINUX, am33_linux_init_osabi);
 726 }
 727