gdb/tm-sparc.h

   1 /* Parameters for target machine of Sun 4, for GDB, the GNU debugger.
   2    Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
   3    Contributed by Michael Tiemann (tiemann@mcc.com)
   4 This file is part of GDB.
   5
   6 This program is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2 of the License, or
   9 (at your option) any later version.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #define TARGET_BYTE_ORDER BIG_ENDIAN
  21
  22 /* Floating point is IEEE compatible.  */
  23 #define IEEE_FLOAT
  24
  25 /* Define this if the C compiler puts an underscore at the front
  26    of external names before giving them to the linker.  */
  27
  28 #define NAMES_HAVE_UNDERSCORE
  29
  30 /* Debugger information will be in DBX format.  */
  31
  32 #define READ_DBX_FORMAT
  33
  34 /* When passing a structure to a function, Sun cc passes the address
  35    in a register, not the structure itself.  It (under SunOS4) creates
  36    two symbols, so we get a LOC_ARG saying the address is on the stack
  37    (a lie, and a serious one since we don't know which register to
  38    use), and a LOC_REGISTER saying that the struct is in a register
  39    (sort of a lie, but fixable with REG_STRUCT_HAS_ADDR).  Gcc version
  40    two (as of 1.92) behaves like sun cc, but I don't know how we can
  41    distinguish between gcc version 1 and gcc version 2.
  42
  43    This still doesn't work if the argument is not one passed in a
  44    register (i.e. it's the 7th or later argument).  */
  45 #define REG_STRUCT_HAS_ADDR(gcc_p) (!(gcc_p))
  46 #define STRUCT_ARG_SYM_GARBAGE(gcc_p) (!(gcc_p))
  47
  48 /* If Pcc says that a parameter is a short, it's a short.  This is
  49    because the parameter does get passed in in a register as an int,
  50    but pcc puts it onto the stack frame as a short (not nailing
  51    whatever else might be there.  I'm not sure that I consider this
  52    swift.  Sigh.)
  53
  54    No, don't do this.  The problem here is that pcc says that the
  55    argument is in the upper half of the word reserved on the stack,
  56    but puts it in the lower half.  */
  57 /* #define BELIEVE_PCC_PROMOTION 1 */
  58 /* OK, I've added code to dbxread.c to deal with this case.  */
  59 #define BELIEVE_PCC_PROMOTION_TYPE
  60
  61 /* Offset from address of function to start of its code.
  62    Zero on most machines.  */
  63
  64 #define FUNCTION_START_OFFSET 0
  65
  66 /* Advance PC across any function entry prologue instructions
  67    to reach some "real" code.  SKIP_PROLOGUE_FRAMELESS_P advances
  68    the PC past some of the prologue, but stops as soon as it
  69    knows that the function has a frame.  Its result is equal
  70    to its input PC if the function is frameless, unequal otherwise.  */
  71
  72 #define SKIP_PROLOGUE(pc) \
  73   { pc = skip_prologue (pc, 0); }
  74 #define SKIP_PROLOGUE_FRAMELESS_P(pc) \
  75   { pc = skip_prologue (pc, 1); }
  76 extern CORE_ADDR skip_prologue ();
  77
  78 /* Immediately after a function call, return the saved pc.
  79    Can't go through the frames for this because on some machines
  80    the new frame is not set up until the new function executes
  81    some instructions.  */
  82
  83 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
  84    encodes the structure size being returned.  If we detect such
  85    a fake insn, step past it.  */
  86
  87 #define PC_ADJUST(pc) sparc_pc_adjust(pc)
  88 extern CORE_ADDR sparc_pc_adjust();
  89
  90 #define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
  91
  92 /* Address of the end of stack space.  We get this from the system
  93    include files. */
  94 #include <sys/types.h>
  95 #include <machine/vmparam.h>
  96 #define STACK_END_ADDR USRSTACK
  97
  98 #define INNER_THAN <
  99
 100 /* Stack has strict alignment.  */
 101
 102 #define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
 103
 104 /* Sequence of bytes for breakpoint instruction.  */
 105
 106 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
 107
 108 /* Amount PC must be decremented by after a breakpoint.
 109    This is often the number of bytes in BREAKPOINT
 110    but not always.  */
 111
 112 #define DECR_PC_AFTER_BREAK 0
 113
 114 /* Nonzero if instruction at PC is a return instruction.  */
 115 /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
 116
 117    Note: this does not work for functions returning structures under SunOS.  */
 118 #define ABOUT_TO_RETURN(pc) \
 119   ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
 120
 121 /* Return 1 if P points to an invalid floating point value.  */
 122
 123 #define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
 124
 125 /* Say how long (ordinary) registers are.  */
 126
 127 #define REGISTER_TYPE long
 128
 129 /* Number of machine registers */
 130
 131 #define NUM_REGS 72
 132
 133 /* Initializer for an array of names of registers.
 134    There should be NUM_REGS strings in this initializer.  */
 135
 136 #define REGISTER_NAMES  \
 137 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
 138   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
 139   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
 140   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
 141                                                                 \
 142   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",       \
 143   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
 144   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
 145   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
 146                                                                 \
 147   "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
 148
 149 /* Register numbers of various important registers.
 150    Note that some of these values are "real" register numbers,
 151    and correspond to the general registers of the machine,
 152    and some are "phony" register numbers which are too large
 153    to be actual register numbers as far as the user is concerned
 154    but do serve to get the desired values when passed to read_register.  */
 155
 156 #define G0_REGNUM 0             /* %g0 */
 157 #define G1_REGNUM 1             /* %g1 */
 158 #define O0_REGNUM 8             /* %o0 */
 159 #define SP_REGNUM 14            /* Contains address of top of stack, \
 160                                    which is also the bottom of the frame.  */
 161 #define RP_REGNUM 15            /* Contains return address value, *before* \
 162                                    any windows get switched.  */
 163 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
 164 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
 165                                    rather than in machine registers */
 166 #define I0_REGNUM 24            /* %i0 */
 167 #define FP_REGNUM 30            /* Contains address of executing stack frame */
 168 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
 169 #define FP0_REGNUM 32           /* Floating point register 0 */
 170 #define Y_REGNUM 64             /* Temp register for multiplication, etc.  */
 171 #define PS_REGNUM 65            /* Contains processor status */
 172 #define WIM_REGNUM 66           /* Window Invalid Mask (not really supported) */
 173 #define TBR_REGNUM 67           /* Trap Base Register (not really supported) */
 174 #define PC_REGNUM 68            /* Contains program counter */
 175 #define NPC_REGNUM 69           /* Contains next PC */
 176 #define FPS_REGNUM 70           /* Floating point status register */
 177 #define CPS_REGNUM 71           /* Coprocessor status register */
 178
 179 /* Total amount of space needed to store our copies of the machine's
 180    register state, the array `registers'.  */
 181 #define REGISTER_BYTES (32*4+32*4+8*4)
 182
 183 /* Index within `registers' of the first byte of the space for
 184    register N.  */
 185 /* ?? */
 186 #define REGISTER_BYTE(N)  ((N)*4)
 187
 188 /* The SPARC processor has register windows.  */
 189
 190 #define HAVE_REGISTER_WINDOWS
 191
 192 /* Is this register part of the register window system?  A yes answer
 193    implies that 1) The name of this register will not be the same in
 194    other frames, and 2) This register is automatically "saved" (out
 195    registers shifting into ins counts) upon subroutine calls and thus
 196    there is no need to search more than one stack frame for it. */
 197
 198 #define REGISTER_IN_WINDOW_P(regnum)    \
 199   ((regnum) >= 8 && (regnum) < 32)
 200
 201 /* Number of bytes of storage in the actual machine representation
 202    for register N.  */
 203
 204 /* On the SPARC, all regs are 4 bytes.  */
 205
 206 #define REGISTER_RAW_SIZE(N) (4)
 207
 208 /* Number of bytes of storage in the program's representation
 209    for register N.  */
 210
 211 /* On the SPARC, all regs are 4 bytes.  */
 212
 213 #define REGISTER_VIRTUAL_SIZE(N) (4)
 214
 215 /* Largest value REGISTER_RAW_SIZE can have.  */
 216
 217 #define MAX_REGISTER_RAW_SIZE 8
 218
 219 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 220
 221 #define MAX_REGISTER_VIRTUAL_SIZE 8
 222
 223 /* Nonzero if register N requires conversion
 224    from raw format to virtual format.  */
 225
 226 #define REGISTER_CONVERTIBLE(N) (0)
 227
 228 /* Convert data from raw format for register REGNUM
 229    to virtual format for register REGNUM.  */
 230
 231 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
 232 { bcopy ((FROM), (TO), 4); }
 233
 234 /* Convert data from virtual format for register REGNUM
 235    to raw format for register REGNUM.  */
 236
 237 #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
 238 { bcopy ((FROM), (TO), 4); }
 239
 240 /* Return the GDB type object for the "standard" data type
 241    of data in register N.  */
 242
 243 #define REGISTER_VIRTUAL_TYPE(N) \
 244  ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
 245   builtin_type_int)
 246
 247 /* Writing to %g0 is a noop (not an error or exception or anything like
 248    that, however).  */
 249
 250 #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
 251
 252 /* Store the address of the place in which to copy the structure the
 253    subroutine will return.  This is called from call_function. */
 254
 255 #define STORE_STRUCT_RETURN(ADDR, SP) \
 256   { target_write_memory ((SP)+(16*4), (char *)&(ADDR), 4); }
 257
 258 /* Extract from an array REGBUF containing the (raw) register state
 259    a function return value of type TYPE, and copy that, in virtual format,
 260    into VALBUF.  */
 261
 262 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)              \
 263   {                                                                        \
 264     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                 \
 265       {                                                                    \
 266         bcopy (((int *)(REGBUF))+FP0_REGNUM,                               \
 267                (VALBUF), TYPE_LENGTH(TYPE));                               \
 268       }                                                                    \
 269     else                                                                   \
 270       bcopy (((int *)(REGBUF))+8, (VALBUF), TYPE_LENGTH (TYPE));           \
 271   }
 272
 273 /* Write into appropriate registers a function return value
 274    of type TYPE, given in virtual format.  */
 275 /* On sparc, values are returned in register %o0.  */
 276 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 277   {                                                                          \
 278     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                   \
 279       /* Floating-point values are returned in the register pair */          \
 280       /* formed by %f0 and %f1 (doubles are, anyway).  */                    \
 281       write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF),            \
 282                             TYPE_LENGTH (TYPE));                             \
 283     else                                                                     \
 284       /* Other values are returned in register %o0.  */                      \
 285       write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),             \
 286                             TYPE_LENGTH (TYPE));  \
 287   }
 288
 289 /* Extract from an array REGBUF containing the (raw) register state
 290    the address in which a function should return its structure value,
 291    as a CORE_ADDR (or an expression that can be used as one).  */
 292
 293 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 294   (sparc_extract_struct_value_address (REGBUF))
 295 CORE_ADDR sparc_extract_struct_value_address (
 296 #ifdef __STDC__
 297                                               char [REGISTER_BYTES]
 298 #endif
 299                                               );
 300
 301 \f
 302 /* Describe the pointer in each stack frame to the previous stack frame
 303    (its caller).  */
 304
 305 /* If you're not compiling this on a sun, you'll have to get a copy
 306    of <sun4/reg.h> (also known as <machine/reg.h>).  */
 307 #include <sun4/reg.h>
 308
 309 /* FRAME_CHAIN takes a frame's nominal address
 310    and produces the frame's chain-pointer.
 311
 312    FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
 313    and produces the nominal address of the caller frame.
 314
 315    However, if FRAME_CHAIN_VALID returns zero,
 316    it means the given frame is the outermost one and has no caller.
 317    In that case, FRAME_CHAIN_COMBINE is not used.  */
 318
 319 /* In the case of the Sun 4, the frame-chain's nominal address
 320    is held in the frame pointer register.
 321
 322    On the Sun4, the frame (in %fp) is %sp for the previous frame.
 323    From the previous frame's %sp, we can find the previous frame's
 324    %fp: it is in the save area just above the previous frame's %sp.
 325
 326    If we are setting up an arbitrary frame, we'll need to know where
 327    it ends.  Hence the following.  This part of the frame cache
 328    structure should be checked before it is assumed that this frame's
 329    bottom is in the stack pointer.
 330
 331    If there isn't a frame below this one, the bottom of this frame is
 332    in the stack pointer.
 333
 334    If there is a frame below this one, and the frame pointers are
 335    identical, it's a leaf frame and the bottoms are the same also.
 336
 337    Otherwise the bottom of this frame is the top of the next frame.  */
 338
 339 #define EXTRA_FRAME_INFO        FRAME_ADDR bottom;
 340 #define INIT_EXTRA_FRAME_INFO(fci)  \
 341   (fci)->bottom =                                       \
 342    ((fci)->next ?                                       \
 343     ((fci)->frame == (fci)->next_frame ?                \
 344      (fci)->next->bottom : (fci)->next->frame) :        \
 345     read_register (SP_REGNUM));
 346
 347 #define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe))
 348 CORE_ADDR sparc_frame_chain ();
 349
 350 #define FRAME_CHAIN_VALID(chain, thisframe) \
 351   (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
 352
 353 #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
 354
 355 /* Define other aspects of the stack frame.  */
 356
 357 /* A macro that tells us whether the function invocation represented
 358    by FI does not have a frame on the stack associated with it.  If it
 359    does not, FRAMELESS is set to 1, else 0.  */
 360 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
 361   (FRAMELESS) = frameless_look_for_prologue(FI)
 362
 363 /* Where is the PC for a specific frame */
 364
 365 #define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
 366 CORE_ADDR frame_saved_pc ();
 367
 368 /* If the argument is on the stack, it will be here.  */
 369 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 370
 371 #define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
 372
 373 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 374
 375 /* Set VAL to the number of args passed to frame described by FI.
 376    Can set VAL to -1, meaning no way to tell.  */
 377
 378 /* We can't tell how many args there are
 379    now that the C compiler delays popping them.  */
 380 #define FRAME_NUM_ARGS(val,fi) (val = -1)
 381
 382 /* Return number of bytes at start of arglist that are not really args.  */
 383
 384 #define FRAME_ARGS_SKIP 68
 385
 386 /* Put here the code to store, into a struct frame_saved_regs,
 387    the addresses of the saved registers of frame described by FRAME_INFO.
 388    The actual code is in sparc-tdep.c so we can debug it sanely.  */
 389
 390 #define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)         \
 391         sparc_frame_find_saved_regs ((fi), &(frame_saved_regs))
 392 extern void sparc_frame_find_saved_regs ();
 393 \f
 394 /* Things needed for making the inferior call functions.  */
 395 /*
 396  * First of all, let me give my opinion of what the DUMMY_FRAME
 397  * actually looks like.
 398  *
 399  *               |                                 |
 400  *               |                                 |
 401  *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
 402  *               |                                 |
 403  *               |                                 |
 404  *               |                                 |
 405  *               |                                 |
 406  *               |  Frame of innermost program     |
 407  *               |           function              |
 408  *               |                                 |
 409  *               |                                 |
 410  *               |                                 |
 411  *               |                                 |
 412  *               |                                 |
 413  *               |---------------------------------|<-- sp (level 0), fp (c)
 414  *               |                                 |
 415  *     DUMMY     |             fp0-31              |
 416  *               |                                 |
 417  *               |             ------              |<-- fp - 0x80
 418  *     FRAME     |              g0-7               |<-- fp - 0xa0
 419  *               |              i0-7               |<-- fp - 0xc0
 420  *               |             other               |<-- fp - 0xe0
 421  *               |               ?                 |
 422  *               |               ?                 |
 423  *               |---------------------------------|<-- sp' = fp - 0x140
 424  *               |                                 |
 425  * xcution start |                                 |
 426  * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
 427  *               |                                 |
 428  *               |                                 |
 429  *               |---------------------------------|<-- sp'' = fp - 0x200
 430  *               |  align sp to 8 byte boundary    |
 431  *               |     ==> args to fn <==          |
 432  *  Room for     |                                 |
 433  * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
 434  *               |---------------------------------|<-- final sp (variable)
 435  *               |                                 |
 436  *               |   Where function called will    |
 437  *               |           build frame.          |
 438  *               |                                 |
 439  *               |                                 |
 440  *
 441  *   I understand everything in this picture except what the space
 442  * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
 443  * understand why there's a large chunk of CALL_DUMMY that never gets
 444  * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
 445  * are designed to do the same thing).
 446  *
 447  *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
 448  * register file stack down one.
 449  *
 450  *   call_function then writes CALL_DUMMY, pushes the args onto the
 451  * stack, and adjusts the stack pointer.
 452  *
 453  *   run_stack_dummy then starts execution (in the middle of
 454  * CALL_DUMMY, as directed by call_function).
 455  */
 456
 457 /* Push an empty stack frame, to record the current PC, etc.  */
 458
 459 #define PUSH_DUMMY_FRAME        sparc_push_dummy_frame ()
 460 #define POP_FRAME       sparc_pop_frame ()
 461
 462 void sparc_push_dummy_frame (), sparc_pop_frame ();
 463 /* This sequence of words is the instructions
 464
 465    save %sp,-0x140,%sp
 466    std  %f30,[%fp-0x08]
 467    std  %f28,[%fp-0x10]
 468    std  %f26,[%fp-0x18]
 469    std  %f24,[%fp-0x20]
 470    std  %f22,[%fp-0x28]
 471    std  %f20,[%fp-0x30]
 472    std  %f18,[%fp-0x38]
 473    std  %f16,[%fp-0x40]
 474    std  %f14,[%fp-0x48]
 475    std  %f12,[%fp-0x50]
 476    std  %f10,[%fp-0x58]
 477    std  %f8,[%fp-0x60]
 478    std  %f6,[%fp-0x68]
 479    std  %f4,[%fp-0x70]
 480    std  %f2,[%fp-0x78]
 481    std  %f0,[%fp-0x80]
 482    std  %g6,[%fp-0x88]
 483    std  %g4,[%fp-0x90]
 484    std  %g2,[%fp-0x98]
 485    std  %g0,[%fp-0xa0]
 486    std  %i6,[%fp-0xa8]
 487    std  %i4,[%fp-0xb0]
 488    std  %i2,[%fp-0xb8]
 489    std  %i0,[%fp-0xc0]
 490    nop ! stcsr  [%fp-0xc4]
 491    nop ! stfsr  [%fp-0xc8]
 492    nop ! wr     %npc,[%fp-0xcc]
 493    nop ! wr     %pc,[%fp-0xd0]
 494    rd   %tbr,%o0
 495    st   %o0,[%fp-0xd4]
 496    rd   %wim,%o1
 497    st   %o0,[%fp-0xd8]
 498    rd   %psr,%o0
 499    st   %o0,[%fp-0xdc]
 500    rd   %y,%o0
 501    st   %o0,[%fp-0xe0]
 502
 503      /..* The arguments are pushed at this point by GDB;
 504         no code is needed in the dummy for this.
 505         The CALL_DUMMY_START_OFFSET gives the position of
 506         the following ld instruction.  *../
 507
 508    ld   [%sp+0x58],%o5
 509    ld   [%sp+0x54],%o4
 510    ld   [%sp+0x50],%o3
 511    ld   [%sp+0x4c],%o2
 512    ld   [%sp+0x48],%o1
 513    call 0x00000000
 514    ld   [%sp+0x44],%o0
 515    nop
 516    ta 1
 517    nop
 518
 519    note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
 520    note that the `call' insn is a relative, not an absolute call.
 521    note that the `nop' at the end is needed to keep the trap from
 522         clobbering things (if NPC pointed to garbage instead).
 523
 524 We actually start executing at the `sethi', since the pushing of the
 525 registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
 526 real code, the arguments for the function called by the CALL would be
 527 pushed between the list of ST insns and the CALL, and we could allow
 528 it to execute through.  But the arguments have to be pushed by GDB
 529 after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
 530 insns to be performed again, lest the registers saved be taken for
 531 arguments.  */
 532
 533 #define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,    \
 534                      0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,    \
 535                      0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,    \
 536                      0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,    \
 537                      0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,    \
 538                      0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,    \
 539                      0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,    \
 540                      0x01000000, 0x91580000, 0xd027bf50, 0x93500000,    \
 541                      0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,    \
 542                      0xd027bf44, 0xda03a058, 0xd803a054, 0xd603a050,    \
 543                      0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,    \
 544                      0x01000000, 0x91d02001, 0x01000000, 0x01000000}
 545
 546 #define CALL_DUMMY_LENGTH 192
 547
 548 #define CALL_DUMMY_START_OFFSET 148
 549
 550 #define CALL_DUMMY_STACK_ADJUST 68
 551
 552 /* Insert the specified number of args and function address
 553    into a call sequence of the above form stored at DUMMYNAME.
 554
 555    For structs and unions, if the function was compiled with Sun cc,
 556    it expects 'unimp' after the call.  But gcc doesn't use that
 557    (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
 558    can assume it is operating on a pristine CALL_DUMMY, not one that
 559    has already been customized for a different function).  */
 560
 561 #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
 562 {                                                                       \
 563   *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));  \
 564   if (!gcc_p                                                            \
 565       && (TYPE_CODE (type) == TYPE_CODE_STRUCT                          \
 566           || TYPE_CODE (type) == TYPE_CODE_UNION))                      \
 567     *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);   \
 568 }
 569
 570 \f
 571 /* Sparc has no reliable single step ptrace call */
 572
 573 #define NO_SINGLE_STEP 1
 574 extern void single_step ();
 575
 576 /* We need two arguments (in general) to the "info frame" command.
 577    Note that the definition of this macro implies that there exists a
 578    function "setup_arbitrary_frame" in sparc-tdep.c */
 579
 580 #define FRAME_SPECIFICATION_DYADIC
 581
 582 /* To print every pair of float registers as a double, we use this hook.  */
 583
 584 #define PRINT_REGISTER_HOOK(regno)      \
 585   if (((regno) >= FP0_REGNUM)           \
 586    && ((regno) <  FP0_REGNUM + 32)      \
 587    && (0 == (regno & 1))) {             \
 588     char doublereg[8];          /* two float regs */    \
 589     if (!read_relative_register_raw_bytes (i  , doublereg  )    \
 590      && !read_relative_register_raw_bytes (i+1, doublereg+4)) { \
 591       printf("\t");                     \
 592       print_floating (doublereg, builtin_type_double, stdout);  \
 593     }                                   \
 594   }
 595