gdb/ft32-tdep.c

   1 /* Target-dependent code for FT32.
   2
   3    Copyright (C) 2009-2017 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 "frame.h"
  22 #include "frame-unwind.h"
  23 #include "frame-base.h"
  24 #include "symtab.h"
  25 #include "gdbtypes.h"
  26 #include "gdbcmd.h"
  27 #include "gdbcore.h"
  28 #include "value.h"
  29 #include "inferior.h"
  30 #include "symfile.h"
  31 #include "objfiles.h"
  32 #include "osabi.h"
  33 #include "language.h"
  34 #include "arch-utils.h"
  35 #include "regcache.h"
  36 #include "trad-frame.h"
  37 #include "dis-asm.h"
  38 #include "record.h"
  39
  40 #include "opcode/ft32.h"
  41
  42 #include "ft32-tdep.h"
  43 #include "gdb/sim-ft32.h"
  44 #include <algorithm>
  45
  46 #define RAM_BIAS  0x800000  /* Bias added to RAM addresses.  */
  47
  48 /* Use an invalid address -1 as 'not available' marker.  */
  49 enum { REG_UNAVAIL = (CORE_ADDR) (-1) };
  50
  51 struct ft32_frame_cache
  52 {
  53   /* Base address of the frame */
  54   CORE_ADDR base;
  55   /* Function this frame belongs to */
  56   CORE_ADDR pc;
  57   /* Total size of this frame */
  58   LONGEST framesize;
  59   /* Saved registers in this frame */
  60   CORE_ADDR saved_regs[FT32_NUM_REGS];
  61   /* Saved SP in this frame */
  62   CORE_ADDR saved_sp;
  63   /* Has the new frame been LINKed.  */
  64   bfd_boolean established;
  65 };
  66
  67 /* Implement the "frame_align" gdbarch method.  */
  68
  69 static CORE_ADDR
  70 ft32_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp)
  71 {
  72   /* Align to the size of an instruction (so that they can safely be
  73      pushed onto the stack.  */
  74   return sp & ~1;
  75 }
  76
  77
  78 constexpr gdb_byte ft32_break_insn[] = { 0x02, 0x00, 0x34, 0x00 };
  79
  80 typedef BP_MANIPULATION (ft32_break_insn) ft32_breakpoint;
  81
  82 /* FT32 register names.  */
  83
  84 static const char *const ft32_register_names[] =
  85 {
  86     "fp", "sp",
  87     "r0", "r1", "r2", "r3",  "r4", "r5", "r6", "r7",
  88     "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
  89     "r16", "r17", "r18", "r19",  "r20", "r21", "r22", "r23",
  90     "r24", "r25", "r26", "r27", "r28", "cc",
  91     "pc"
  92 };
  93
  94 /* Implement the "register_name" gdbarch method.  */
  95
  96 static const char *
  97 ft32_register_name (struct gdbarch *gdbarch, int reg_nr)
  98 {
  99   if (reg_nr < 0)
 100     return NULL;
 101   if (reg_nr >= FT32_NUM_REGS)
 102     return NULL;
 103   return ft32_register_names[reg_nr];
 104 }
 105
 106 /* Implement the "register_type" gdbarch method.  */
 107
 108 static struct type *
 109 ft32_register_type (struct gdbarch *gdbarch, int reg_nr)
 110 {
 111   if (reg_nr == FT32_PC_REGNUM)
 112     return gdbarch_tdep (gdbarch)->pc_type;
 113   else if (reg_nr == FT32_SP_REGNUM || reg_nr == FT32_FP_REGNUM)
 114     return builtin_type (gdbarch)->builtin_data_ptr;
 115   else
 116     return builtin_type (gdbarch)->builtin_int32;
 117 }
 118
 119 /* Write into appropriate registers a function return value
 120    of type TYPE, given in virtual format.  */
 121
 122 static void
 123 ft32_store_return_value (struct type *type, struct regcache *regcache,
 124                          const gdb_byte *valbuf)
 125 {
 126   struct gdbarch *gdbarch = regcache->arch ();
 127   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 128   CORE_ADDR regval;
 129   int len = TYPE_LENGTH (type);
 130
 131   /* Things always get returned in RET1_REGNUM, RET2_REGNUM.  */
 132   regval = extract_unsigned_integer (valbuf, len > 4 ? 4 : len, byte_order);
 133   regcache_cooked_write_unsigned (regcache, FT32_R0_REGNUM, regval);
 134   if (len > 4)
 135     {
 136       regval = extract_unsigned_integer (valbuf + 4,
 137                                          len - 4, byte_order);
 138       regcache_cooked_write_unsigned (regcache, FT32_R1_REGNUM, regval);
 139     }
 140 }
 141
 142 /* Decode the instructions within the given address range.  Decide
 143    when we must have reached the end of the function prologue.  If a
 144    frame_info pointer is provided, fill in its saved_regs etc.
 145
 146    Returns the address of the first instruction after the prologue.  */
 147
 148 static CORE_ADDR
 149 ft32_analyze_prologue (CORE_ADDR start_addr, CORE_ADDR end_addr,
 150                        struct ft32_frame_cache *cache,
 151                        struct gdbarch *gdbarch)
 152 {
 153   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 154   CORE_ADDR next_addr;
 155   ULONGEST inst;
 156   int regnum, pushreg;
 157   struct bound_minimal_symbol msymbol;
 158   const int first_saved_reg = 13;       /* The first saved register.  */
 159   /* PROLOGS are addresses of the subroutine prologs, PROLOGS[n]
 160      is the address of __prolog_$rN.
 161      __prolog_$rN pushes registers from 13 through n inclusive.
 162      So for example CALL __prolog_$r15 is equivalent to:
 163        PUSH $r13
 164        PUSH $r14
 165        PUSH $r15
 166      Note that PROLOGS[0] through PROLOGS[12] are unused.  */
 167   CORE_ADDR prologs[32];
 168
 169   cache->saved_regs[FT32_PC_REGNUM] = 0;
 170   cache->framesize = 0;
 171
 172   for (regnum = first_saved_reg; regnum < 32; regnum++)
 173     {
 174       char prolog_symbol[32];
 175
 176       snprintf (prolog_symbol, sizeof (prolog_symbol), "__prolog_$r%02d",
 177                 regnum);
 178       msymbol = lookup_minimal_symbol (prolog_symbol, NULL, NULL);
 179       if (msymbol.minsym)
 180         prologs[regnum] = BMSYMBOL_VALUE_ADDRESS (msymbol);
 181       else
 182         prologs[regnum] = 0;
 183     }
 184
 185   if (start_addr >= end_addr)
 186     return end_addr;
 187
 188   cache->established = 0;
 189   for (next_addr = start_addr; next_addr < end_addr;)
 190     {
 191       inst = read_memory_unsigned_integer (next_addr, 4, byte_order);
 192
 193       if (FT32_IS_PUSH (inst))
 194         {
 195           pushreg = FT32_PUSH_REG (inst);
 196           cache->framesize += 4;
 197           cache->saved_regs[FT32_R0_REGNUM + pushreg] = cache->framesize;
 198           next_addr += 4;
 199         }
 200       else if (FT32_IS_CALL (inst))
 201         {
 202           for (regnum = first_saved_reg; regnum < 32; regnum++)
 203             {
 204               if ((4 * (inst & 0x3ffff)) == prologs[regnum])
 205                 {
 206                   for (pushreg = first_saved_reg; pushreg <= regnum;
 207                        pushreg++)
 208                     {
 209                       cache->framesize += 4;
 210                       cache->saved_regs[FT32_R0_REGNUM + pushreg] =
 211                         cache->framesize;
 212                     }
 213                   next_addr += 4;
 214                 }
 215             }
 216           break;
 217         }
 218       else
 219         break;
 220     }
 221   for (regnum = FT32_R0_REGNUM; regnum < FT32_PC_REGNUM; regnum++)
 222     {
 223       if (cache->saved_regs[regnum] != REG_UNAVAIL)
 224         cache->saved_regs[regnum] =
 225           cache->framesize - cache->saved_regs[regnum];
 226     }
 227   cache->saved_regs[FT32_PC_REGNUM] = cache->framesize;
 228
 229   /* It is a LINK?  */
 230   if (next_addr < end_addr)
 231     {
 232       inst = read_memory_unsigned_integer (next_addr, 4, byte_order);
 233       if (FT32_IS_LINK (inst))
 234         {
 235           cache->established = 1;
 236           for (regnum = FT32_R0_REGNUM; regnum < FT32_PC_REGNUM; regnum++)
 237             {
 238               if (cache->saved_regs[regnum] != REG_UNAVAIL)
 239                 cache->saved_regs[regnum] += 4;
 240             }
 241           cache->saved_regs[FT32_PC_REGNUM] = cache->framesize + 4;
 242           cache->saved_regs[FT32_FP_REGNUM] = 0;
 243           cache->framesize += FT32_LINK_SIZE (inst);
 244           next_addr += 4;
 245         }
 246     }
 247
 248   return next_addr;
 249 }
 250
 251 /* Find the end of function prologue.  */
 252
 253 static CORE_ADDR
 254 ft32_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc)
 255 {
 256   CORE_ADDR func_addr = 0, func_end = 0;
 257   const char *func_name;
 258
 259   /* See if we can determine the end of the prologue via the symbol table.
 260      If so, then return either PC, or the PC after the prologue, whichever
 261      is greater.  */
 262   if (find_pc_partial_function (pc, &func_name, &func_addr, &func_end))
 263     {
 264       CORE_ADDR post_prologue_pc
 265         = skip_prologue_using_sal (gdbarch, func_addr);
 266       if (post_prologue_pc != 0)
 267         return std::max (pc, post_prologue_pc);
 268       else
 269         {
 270           /* Can't determine prologue from the symbol table, need to examine
 271              instructions.  */
 272           struct symtab_and_line sal;
 273           struct symbol *sym;
 274           struct ft32_frame_cache cache;
 275           CORE_ADDR plg_end;
 276
 277           memset (&cache, 0, sizeof cache);
 278
 279           plg_end = ft32_analyze_prologue (func_addr,
 280                                            func_end, &cache, gdbarch);
 281           /* Found a function.  */
 282           sym = lookup_symbol (func_name, NULL, VAR_DOMAIN, NULL).symbol;
 283           /* Don't use line number debug info for assembly source files.  */
 284           if ((sym != NULL) && SYMBOL_LANGUAGE (sym) != language_asm)
 285             {
 286               sal = find_pc_line (func_addr, 0);
 287               if (sal.end && sal.end < func_end)
 288                 {
 289                   /* Found a line number, use it as end of prologue.  */
 290                   return sal.end;
 291                 }
 292             }
 293           /* No useable line symbol.  Use result of prologue parsing method.  */
 294           return plg_end;
 295         }
 296     }
 297
 298   /* No function symbol -- just return the PC.  */
 299   return pc;
 300 }
 301
 302 /* Implementation of `pointer_to_address' gdbarch method.
 303
 304    On FT32 address space zero is RAM, address space 1 is flash.
 305    RAM appears at address RAM_BIAS, flash at address 0.  */
 306
 307 static CORE_ADDR
 308 ft32_pointer_to_address (struct gdbarch *gdbarch,
 309                          struct type *type, const gdb_byte *buf)
 310 {
 311   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 312   CORE_ADDR addr
 313     = extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order);
 314
 315   if (TYPE_ADDRESS_CLASS_1 (type))
 316     return addr;
 317   else
 318     return addr | RAM_BIAS;
 319 }
 320
 321 /* Implementation of `address_class_type_flags' gdbarch method.
 322
 323    This method maps DW_AT_address_class attributes to a
 324    type_instance_flag_value.  */
 325
 326 static int
 327 ft32_address_class_type_flags (int byte_size, int dwarf2_addr_class)
 328 {
 329   /* The value 1 of the DW_AT_address_class attribute corresponds to the
 330      __flash__ qualifier, meaning pointer to data in FT32 program memory.
 331    */
 332   if (dwarf2_addr_class == 1)
 333     return TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
 334   return 0;
 335 }
 336
 337 /* Implementation of `address_class_type_flags_to_name' gdbarch method.
 338
 339    Convert a type_instance_flag_value to an address space qualifier.  */
 340
 341 static const char*
 342 ft32_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags)
 343 {
 344   if (type_flags & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
 345     return "flash";
 346   else
 347     return NULL;
 348 }
 349
 350 /* Implementation of `address_class_name_to_type_flags' gdbarch method.
 351
 352    Convert an address space qualifier to a type_instance_flag_value.  */
 353
 354 static int
 355 ft32_address_class_name_to_type_flags (struct gdbarch *gdbarch,
 356                                        const char* name,
 357                                        int *type_flags_ptr)
 358 {
 359   if (strcmp (name, "flash") == 0)
 360     {
 361       *type_flags_ptr = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
 362       return 1;
 363     }
 364   else
 365     return 0;
 366 }
 367
 368
 369 /* Implement the "read_pc" gdbarch method.  */
 370
 371 static CORE_ADDR
 372 ft32_read_pc (struct regcache *regcache)
 373 {
 374   ULONGEST pc;
 375
 376   regcache_cooked_read_unsigned (regcache, FT32_PC_REGNUM, &pc);
 377   return pc;
 378 }
 379
 380 /* Implement the "write_pc" gdbarch method.  */
 381
 382 static void
 383 ft32_write_pc (struct regcache *regcache, CORE_ADDR val)
 384 {
 385   regcache_cooked_write_unsigned (regcache, FT32_PC_REGNUM, val);
 386 }
 387
 388 /* Implement the "unwind_sp" gdbarch method.  */
 389
 390 static CORE_ADDR
 391 ft32_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
 392 {
 393   return frame_unwind_register_unsigned (next_frame, FT32_SP_REGNUM);
 394 }
 395
 396 /* Given a return value in `regbuf' with a type `valtype',
 397    extract and copy its value into `valbuf'.  */
 398
 399 static void
 400 ft32_extract_return_value (struct type *type, struct regcache *regcache,
 401                            gdb_byte *dst)
 402 {
 403   struct gdbarch *gdbarch = regcache->arch ();
 404   enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
 405   bfd_byte *valbuf = dst;
 406   int len = TYPE_LENGTH (type);
 407   ULONGEST tmp;
 408
 409   /* By using store_unsigned_integer we avoid having to do
 410      anything special for small big-endian values.  */
 411   regcache_cooked_read_unsigned (regcache, FT32_R0_REGNUM, &tmp);
 412   store_unsigned_integer (valbuf, (len > 4 ? len - 4 : len), byte_order, tmp);
 413
 414   /* Ignore return values more than 8 bytes in size because the ft32
 415      returns anything more than 8 bytes in the stack.  */
 416   if (len > 4)
 417     {
 418       regcache_cooked_read_unsigned (regcache, FT32_R1_REGNUM, &tmp);
 419       store_unsigned_integer (valbuf + len - 4, 4, byte_order, tmp);
 420     }
 421 }
 422
 423 /* Implement the "return_value" gdbarch method.  */
 424
 425 static enum return_value_convention
 426 ft32_return_value (struct gdbarch *gdbarch, struct value *function,
 427                    struct type *valtype, struct regcache *regcache,
 428                    gdb_byte *readbuf, const gdb_byte *writebuf)
 429 {
 430   if (TYPE_LENGTH (valtype) > 8)
 431     return RETURN_VALUE_STRUCT_CONVENTION;
 432   else
 433     {
 434       if (readbuf != NULL)
 435         ft32_extract_return_value (valtype, regcache, readbuf);
 436       if (writebuf != NULL)
 437         ft32_store_return_value (valtype, regcache, writebuf);
 438       return RETURN_VALUE_REGISTER_CONVENTION;
 439     }
 440 }
 441
 442 /* Allocate and initialize a ft32_frame_cache object.  */
 443
 444 static struct ft32_frame_cache *
 445 ft32_alloc_frame_cache (void)
 446 {
 447   struct ft32_frame_cache *cache;
 448   int i;
 449
 450   cache = FRAME_OBSTACK_ZALLOC (struct ft32_frame_cache);
 451
 452   for (i = 0; i < FT32_NUM_REGS; ++i)
 453     cache->saved_regs[i] = REG_UNAVAIL;
 454
 455   return cache;
 456 }
 457
 458 /* Populate a ft32_frame_cache object for this_frame.  */
 459
 460 static struct ft32_frame_cache *
 461 ft32_frame_cache (struct frame_info *this_frame, void **this_cache)
 462 {
 463   struct ft32_frame_cache *cache;
 464   CORE_ADDR current_pc;
 465   int i;
 466
 467   if (*this_cache)
 468     return (struct ft32_frame_cache *) *this_cache;
 469
 470   cache = ft32_alloc_frame_cache ();
 471   *this_cache = cache;
 472
 473   cache->base = get_frame_register_unsigned (this_frame, FT32_FP_REGNUM);
 474   if (cache->base == 0)
 475     return cache;
 476
 477   cache->pc = get_frame_func (this_frame);
 478   current_pc = get_frame_pc (this_frame);
 479   if (cache->pc)
 480     {
 481       struct gdbarch *gdbarch = get_frame_arch (this_frame);
 482
 483       ft32_analyze_prologue (cache->pc, current_pc, cache, gdbarch);
 484       if (!cache->established)
 485         cache->base = get_frame_register_unsigned (this_frame, FT32_SP_REGNUM);
 486     }
 487
 488   cache->saved_sp = cache->base - 4;
 489
 490   for (i = 0; i < FT32_NUM_REGS; ++i)
 491     if (cache->saved_regs[i] != REG_UNAVAIL)
 492       cache->saved_regs[i] = cache->base + cache->saved_regs[i];
 493
 494   return cache;
 495 }
 496
 497 /* Implement the "unwind_pc" gdbarch method.  */
 498
 499 static CORE_ADDR
 500 ft32_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame)
 501 {
 502   return frame_unwind_register_unsigned (next_frame, FT32_PC_REGNUM);
 503 }
 504
 505 /* Given a GDB frame, determine the address of the calling function's
 506    frame.  This will be used to create a new GDB frame struct.  */
 507
 508 static void
 509 ft32_frame_this_id (struct frame_info *this_frame,
 510                     void **this_prologue_cache, struct frame_id *this_id)
 511 {
 512   struct ft32_frame_cache *cache = ft32_frame_cache (this_frame,
 513                                                      this_prologue_cache);
 514
 515   /* This marks the outermost frame.  */
 516   if (cache->base == 0)
 517     return;
 518
 519   *this_id = frame_id_build (cache->saved_sp, cache->pc);
 520 }
 521
 522 /* Get the value of register regnum in the previous stack frame.  */
 523
 524 static struct value *
 525 ft32_frame_prev_register (struct frame_info *this_frame,
 526                           void **this_prologue_cache, int regnum)
 527 {
 528   struct ft32_frame_cache *cache = ft32_frame_cache (this_frame,
 529                                                      this_prologue_cache);
 530
 531   gdb_assert (regnum >= 0);
 532
 533   if (regnum == FT32_SP_REGNUM && cache->saved_sp)
 534     return frame_unwind_got_constant (this_frame, regnum, cache->saved_sp);
 535
 536   if (regnum < FT32_NUM_REGS && cache->saved_regs[regnum] != REG_UNAVAIL)
 537       return frame_unwind_got_memory (this_frame, regnum,
 538                                       RAM_BIAS | cache->saved_regs[regnum]);
 539
 540   return frame_unwind_got_register (this_frame, regnum, regnum);
 541 }
 542
 543 static const struct frame_unwind ft32_frame_unwind =
 544 {
 545   NORMAL_FRAME,
 546   default_frame_unwind_stop_reason,
 547   ft32_frame_this_id,
 548   ft32_frame_prev_register,
 549   NULL,
 550   default_frame_sniffer
 551 };
 552
 553 /* Return the base address of this_frame.  */
 554
 555 static CORE_ADDR
 556 ft32_frame_base_address (struct frame_info *this_frame, void **this_cache)
 557 {
 558   struct ft32_frame_cache *cache = ft32_frame_cache (this_frame,
 559                                                      this_cache);
 560
 561   return cache->base;
 562 }
 563
 564 static const struct frame_base ft32_frame_base =
 565 {
 566   &ft32_frame_unwind,
 567   ft32_frame_base_address,
 568   ft32_frame_base_address,
 569   ft32_frame_base_address
 570 };
 571
 572 static struct frame_id
 573 ft32_dummy_id (struct gdbarch *gdbarch, struct frame_info *this_frame)
 574 {
 575   CORE_ADDR sp = get_frame_register_unsigned (this_frame, FT32_SP_REGNUM);
 576
 577   return frame_id_build (sp, get_frame_pc (this_frame));
 578 }
 579
 580 /* Allocate and initialize the ft32 gdbarch object.  */
 581
 582 static struct gdbarch *
 583 ft32_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
 584 {
 585   struct gdbarch *gdbarch;
 586   struct gdbarch_tdep *tdep;
 587   struct type *void_type;
 588   struct type *func_void_type;
 589
 590   /* If there is already a candidate, use it.  */
 591   arches = gdbarch_list_lookup_by_info (arches, &info);
 592   if (arches != NULL)
 593     return arches->gdbarch;
 594
 595   /* Allocate space for the new architecture.  */
 596   tdep = XCNEW (struct gdbarch_tdep);
 597   gdbarch = gdbarch_alloc (&info, tdep);
 598
 599   /* Create a type for PC.  We can't use builtin types here, as they may not
 600      be defined.  */
 601   void_type = arch_type (gdbarch, TYPE_CODE_VOID, TARGET_CHAR_BIT, "void");
 602   func_void_type = make_function_type (void_type, NULL);
 603   tdep->pc_type = arch_pointer_type (gdbarch, 4 * TARGET_CHAR_BIT, NULL,
 604                                      func_void_type);
 605   TYPE_INSTANCE_FLAGS (tdep->pc_type) |= TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
 606
 607   set_gdbarch_read_pc (gdbarch, ft32_read_pc);
 608   set_gdbarch_write_pc (gdbarch, ft32_write_pc);
 609   set_gdbarch_unwind_sp (gdbarch, ft32_unwind_sp);
 610
 611   set_gdbarch_num_regs (gdbarch, FT32_NUM_REGS);
 612   set_gdbarch_sp_regnum (gdbarch, FT32_SP_REGNUM);
 613   set_gdbarch_pc_regnum (gdbarch, FT32_PC_REGNUM);
 614   set_gdbarch_register_name (gdbarch, ft32_register_name);
 615   set_gdbarch_register_type (gdbarch, ft32_register_type);
 616
 617   set_gdbarch_return_value (gdbarch, ft32_return_value);
 618
 619   set_gdbarch_pointer_to_address (gdbarch, ft32_pointer_to_address);
 620
 621   set_gdbarch_skip_prologue (gdbarch, ft32_skip_prologue);
 622   set_gdbarch_inner_than (gdbarch, core_addr_lessthan);
 623   set_gdbarch_breakpoint_kind_from_pc (gdbarch, ft32_breakpoint::kind_from_pc);
 624   set_gdbarch_sw_breakpoint_from_kind (gdbarch, ft32_breakpoint::bp_from_kind);
 625   set_gdbarch_frame_align (gdbarch, ft32_frame_align);
 626
 627   frame_base_set_default (gdbarch, &ft32_frame_base);
 628
 629   /* Methods for saving / extracting a dummy frame's ID.  The ID's
 630      stack address must match the SP value returned by
 631      PUSH_DUMMY_CALL, and saved by generic_save_dummy_frame_tos.  */
 632   set_gdbarch_dummy_id (gdbarch, ft32_dummy_id);
 633
 634   set_gdbarch_unwind_pc (gdbarch, ft32_unwind_pc);
 635
 636   /* Hook in ABI-specific overrides, if they have been registered.  */
 637   gdbarch_init_osabi (info, gdbarch);
 638
 639   /* Hook in the default unwinders.  */
 640   frame_unwind_append_unwinder (gdbarch, &ft32_frame_unwind);
 641
 642   /* Support simple overlay manager.  */
 643   set_gdbarch_overlay_update (gdbarch, simple_overlay_update);
 644
 645   set_gdbarch_address_class_type_flags (gdbarch, ft32_address_class_type_flags);
 646   set_gdbarch_address_class_name_to_type_flags
 647     (gdbarch, ft32_address_class_name_to_type_flags);
 648   set_gdbarch_address_class_type_flags_to_name
 649     (gdbarch, ft32_address_class_type_flags_to_name);
 650
 651   return gdbarch;
 652 }
 653
 654 /* Register this machine's init routine.  */
 655
 656 void
 657 _initialize_ft32_tdep (void)
 658 {
 659   register_gdbarch_init (bfd_arch_ft32, ft32_gdbarch_init);
 660 }