gdb/tm-sparc.h

   1 /* Parameters for target machine of Sun 4, for GDB, the GNU debugger.
   2    Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
   3    Contributed by Michael Tiemann (tiemann@mcc.com)
   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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 #define TARGET_BYTE_ORDER BIG_ENDIAN
  22
  23 /* Floating point is IEEE compatible.  */
  24 #define IEEE_FLOAT
  25
  26 /* Define this if the C compiler puts an underscore at the front
  27    of external names before giving them to the linker.  */
  28
  29 #define NAMES_HAVE_UNDERSCORE
  30
  31 /* When passing a structure to a function, Sun cc passes the address
  32    in a register, not the structure itself.  It (under SunOS4) creates
  33    two symbols, so we get a LOC_ARG saying the address is on the stack
  34    (a lie, and a serious one since we don't know which register to
  35    use), and a LOC_REGISTER saying that the struct is in a register
  36    (sort of a lie, but fixable with REG_STRUCT_HAS_ADDR).  Gcc version
  37    two (as of 1.92) behaves like sun cc, but I don't know how we can
  38    distinguish between gcc version 1 and gcc version 2.
  39
  40    This still doesn't work if the argument is not one passed in a
  41    register (i.e. it's the 7th or later argument).  */
  42 #define REG_STRUCT_HAS_ADDR(gcc_p) (!(gcc_p))
  43 #define STRUCT_ARG_SYM_GARBAGE(gcc_p) (!(gcc_p))
  44
  45 /* If Pcc says that a parameter is a short, it's a short.  This is
  46    because the parameter does get passed in in a register as an int,
  47    but pcc puts it onto the stack frame as a short (not nailing
  48    whatever else might be there.  I'm not sure that I consider this
  49    swift.  Sigh.)
  50
  51    No, don't do this.  The problem here is that pcc says that the
  52    argument is in the upper half of the word reserved on the stack,
  53    but puts it in the lower half.  */
  54 /* #define BELIEVE_PCC_PROMOTION 1 */
  55 /* OK, I've added code to dbxread.c to deal with this case.  */
  56 #define BELIEVE_PCC_PROMOTION_TYPE
  57
  58 /* Offset from address of function to start of its code.
  59    Zero on most machines.  */
  60
  61 #define FUNCTION_START_OFFSET 0
  62
  63 /* Advance PC across any function entry prologue instructions
  64    to reach some "real" code.  SKIP_PROLOGUE_FRAMELESS_P advances
  65    the PC past some of the prologue, but stops as soon as it
  66    knows that the function has a frame.  Its result is equal
  67    to its input PC if the function is frameless, unequal otherwise.  */
  68
  69 #define SKIP_PROLOGUE(pc) \
  70   { pc = skip_prologue (pc, 0); }
  71 #define SKIP_PROLOGUE_FRAMELESS_P(pc) \
  72   { pc = skip_prologue (pc, 1); }
  73 extern CORE_ADDR skip_prologue ();
  74
  75 /* Immediately after a function call, return the saved pc.
  76    Can't go through the frames for this because on some machines
  77    the new frame is not set up until the new function executes
  78    some instructions.  */
  79
  80 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
  81    encodes the structure size being returned.  If we detect such
  82    a fake insn, step past it.  */
  83
  84 #define PC_ADJUST(pc) sparc_pc_adjust(pc)
  85 extern CORE_ADDR sparc_pc_adjust();
  86
  87 #define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
  88
  89 /* Address of the end of stack space.  We get this from the system
  90    include files. */
  91 #include <sys/types.h>
  92 #include <machine/vmparam.h>
  93 #define STACK_END_ADDR USRSTACK
  94
  95 #define INNER_THAN <
  96
  97 /* Stack has strict alignment.  */
  98
  99 #define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
 100
 101 /* Sequence of bytes for breakpoint instruction.  */
 102
 103 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
 104
 105 /* Amount PC must be decremented by after a breakpoint.
 106    This is often the number of bytes in BREAKPOINT
 107    but not always.  */
 108
 109 #define DECR_PC_AFTER_BREAK 0
 110
 111 /* Nonzero if instruction at PC is a return instruction.  */
 112 /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
 113
 114    Note: this does not work for functions returning structures under SunOS.  */
 115 #define ABOUT_TO_RETURN(pc) \
 116   ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
 117
 118 /* Return 1 if P points to an invalid floating point value.  */
 119
 120 #define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
 121
 122 /* Say how long (ordinary) registers are.  */
 123
 124 #define REGISTER_TYPE long
 125
 126 /* Number of machine registers */
 127
 128 #define NUM_REGS 72
 129
 130 /* Initializer for an array of names of registers.
 131    There should be NUM_REGS strings in this initializer.  */
 132
 133 #define REGISTER_NAMES  \
 134 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
 135   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
 136   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
 137   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
 138                                                                 \
 139   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",       \
 140   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
 141   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
 142   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
 143                                                                 \
 144   "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
 145
 146 /* Register numbers of various important registers.
 147    Note that some of these values are "real" register numbers,
 148    and correspond to the general registers of the machine,
 149    and some are "phony" register numbers which are too large
 150    to be actual register numbers as far as the user is concerned
 151    but do serve to get the desired values when passed to read_register.  */
 152
 153 #define G0_REGNUM 0             /* %g0 */
 154 #define G1_REGNUM 1             /* %g1 */
 155 #define O0_REGNUM 8             /* %o0 */
 156 #define SP_REGNUM 14            /* Contains address of top of stack, \
 157                                    which is also the bottom of the frame.  */
 158 #define RP_REGNUM 15            /* Contains return address value, *before* \
 159                                    any windows get switched.  */
 160 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
 161 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
 162                                    rather than in machine registers */
 163 #define I0_REGNUM 24            /* %i0 */
 164 #define FP_REGNUM 30            /* Contains address of executing stack frame */
 165 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
 166 #define FP0_REGNUM 32           /* Floating point register 0 */
 167 #define Y_REGNUM 64             /* Temp register for multiplication, etc.  */
 168 #define PS_REGNUM 65            /* Contains processor status */
 169 #define WIM_REGNUM 66           /* Window Invalid Mask (not really supported) */
 170 #define TBR_REGNUM 67           /* Trap Base Register (not really supported) */
 171 #define PC_REGNUM 68            /* Contains program counter */
 172 #define NPC_REGNUM 69           /* Contains next PC */
 173 #define FPS_REGNUM 70           /* Floating point status register */
 174 #define CPS_REGNUM 71           /* Coprocessor status register */
 175
 176 /* Total amount of space needed to store our copies of the machine's
 177    register state, the array `registers'.  */
 178 #define REGISTER_BYTES (32*4+32*4+8*4)
 179
 180 /* Index within `registers' of the first byte of the space for
 181    register N.  */
 182 /* ?? */
 183 #define REGISTER_BYTE(N)  ((N)*4)
 184
 185 /* The SPARC processor has register windows.  */
 186
 187 #define HAVE_REGISTER_WINDOWS
 188
 189 /* Is this register part of the register window system?  A yes answer
 190    implies that 1) The name of this register will not be the same in
 191    other frames, and 2) This register is automatically "saved" (out
 192    registers shifting into ins counts) upon subroutine calls and thus
 193    there is no need to search more than one stack frame for it. */
 194
 195 #define REGISTER_IN_WINDOW_P(regnum)    \
 196   ((regnum) >= 8 && (regnum) < 32)
 197
 198 /* Number of bytes of storage in the actual machine representation
 199    for register N.  */
 200
 201 /* On the SPARC, all regs are 4 bytes.  */
 202
 203 #define REGISTER_RAW_SIZE(N) (4)
 204
 205 /* Number of bytes of storage in the program's representation
 206    for register N.  */
 207
 208 /* On the SPARC, all regs are 4 bytes.  */
 209
 210 #define REGISTER_VIRTUAL_SIZE(N) (4)
 211
 212 /* Largest value REGISTER_RAW_SIZE can have.  */
 213
 214 #define MAX_REGISTER_RAW_SIZE 8
 215
 216 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 217
 218 #define MAX_REGISTER_VIRTUAL_SIZE 8
 219
 220 /* Nonzero if register N requires conversion
 221    from raw format to virtual format.  */
 222
 223 #define REGISTER_CONVERTIBLE(N) (0)
 224
 225 /* Convert data from raw format for register REGNUM
 226    to virtual format for register REGNUM.  */
 227
 228 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
 229 { bcopy ((FROM), (TO), 4); }
 230
 231 /* Convert data from virtual format for register REGNUM
 232    to raw format for register REGNUM.  */
 233
 234 #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
 235 { bcopy ((FROM), (TO), 4); }
 236
 237 /* Return the GDB type object for the "standard" data type
 238    of data in register N.  */
 239
 240 #define REGISTER_VIRTUAL_TYPE(N) \
 241  ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
 242   builtin_type_int)
 243
 244 /* Writing to %g0 is a noop (not an error or exception or anything like
 245    that, however).  */
 246
 247 #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
 248
 249 /* Store the address of the place in which to copy the structure the
 250    subroutine will return.  This is called from call_function. */
 251
 252 #define STORE_STRUCT_RETURN(ADDR, SP) \
 253   { target_write_memory ((SP)+(16*4), (char *)&(ADDR), 4); }
 254
 255 /* Extract from an array REGBUF containing the (raw) register state
 256    a function return value of type TYPE, and copy that, in virtual format,
 257    into VALBUF.  */
 258
 259 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)              \
 260   {                                                                        \
 261     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                 \
 262       {                                                                    \
 263         bcopy (((int *)(REGBUF))+FP0_REGNUM,                               \
 264                (VALBUF), TYPE_LENGTH(TYPE));                               \
 265       }                                                                    \
 266     else                                                                   \
 267       bcopy ((char *)(REGBUF) + 4 * 8 +                                    \
 268                      (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)), \
 269              (VALBUF), TYPE_LENGTH(TYPE));                                 \
 270   }
 271
 272 /* Write into appropriate registers a function return value
 273    of type TYPE, given in virtual format.  */
 274 /* On sparc, values are returned in register %o0.  */
 275 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 276   {                                                                          \
 277     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                   \
 278       /* Floating-point values are returned in the register pair */          \
 279       /* formed by %f0 and %f1 (doubles are, anyway).  */                    \
 280       write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF),            \
 281                             TYPE_LENGTH (TYPE));                             \
 282     else                                                                     \
 283       /* Other values are returned in register %o0.  */                      \
 284       write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),             \
 285                             TYPE_LENGTH (TYPE));  \
 286   }
 287
 288 /* Extract from an array REGBUF containing the (raw) register state
 289    the address in which a function should return its structure value,
 290    as a CORE_ADDR (or an expression that can be used as one).  */
 291
 292 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 293   (sparc_extract_struct_value_address (REGBUF))
 294 CORE_ADDR sparc_extract_struct_value_address (
 295 #ifdef __STDC__
 296                                               char [REGISTER_BYTES]
 297 #endif
 298                                               );
 299
 300 \f
 301 /* Describe the pointer in each stack frame to the previous stack frame
 302    (its caller).  */
 303
 304 /* If you're not compiling this on a sun, you'll have to get a copy
 305    of <sun4/reg.h> (also known as <machine/reg.h>).  */
 306 #include <sun4/reg.h>
 307
 308 /* FRAME_CHAIN takes a frame's nominal address
 309    and produces the frame's chain-pointer.
 310
 311    However, if FRAME_CHAIN_VALID returns zero,
 312    it means the given frame is the outermost one and has no caller.  */
 313
 314 /* In the case of the Sun 4, the frame-chain's nominal address
 315    is held in the frame pointer register.
 316
 317    On the Sun4, the frame (in %fp) is %sp for the previous frame.
 318    From the previous frame's %sp, we can find the previous frame's
 319    %fp: it is in the save area just above the previous frame's %sp.
 320
 321    If we are setting up an arbitrary frame, we'll need to know where
 322    it ends.  Hence the following.  This part of the frame cache
 323    structure should be checked before it is assumed that this frame's
 324    bottom is in the stack pointer.
 325
 326    If there isn't a frame below this one, the bottom of this frame is
 327    in the stack pointer.
 328
 329    If there is a frame below this one, and the frame pointers are
 330    identical, it's a leaf frame and the bottoms are the same also.
 331
 332    Otherwise the bottom of this frame is the top of the next frame.  */
 333
 334 #define EXTRA_FRAME_INFO        FRAME_ADDR bottom;
 335 #define INIT_EXTRA_FRAME_INFO(fromleaf, fci)  \
 336   (fci)->bottom =                                       \
 337    ((fci)->next ?                                       \
 338     ((fci)->frame == (fci)->next_frame ?                \
 339      (fci)->next->bottom : (fci)->next->frame) :        \
 340     read_register (SP_REGNUM));
 341
 342 #define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe))
 343 CORE_ADDR sparc_frame_chain ();
 344
 345 #define FRAME_CHAIN_VALID(chain, thisframe) \
 346   (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
 347
 348 /* Define other aspects of the stack frame.  */
 349
 350 /* A macro that tells us whether the function invocation represented
 351    by FI does not have a frame on the stack associated with it.  If it
 352    does not, FRAMELESS is set to 1, else 0.  */
 353 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
 354   (FRAMELESS) = frameless_look_for_prologue(FI)
 355
 356 /* Where is the PC for a specific frame */
 357
 358 #define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
 359 CORE_ADDR frame_saved_pc ();
 360
 361 /* If the argument is on the stack, it will be here.  */
 362 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 363
 364 #define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
 365
 366 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 367
 368 /* Set VAL to the number of args passed to frame described by FI.
 369    Can set VAL to -1, meaning no way to tell.  */
 370
 371 /* We can't tell how many args there are
 372    now that the C compiler delays popping them.  */
 373 #define FRAME_NUM_ARGS(val,fi) (val = -1)
 374
 375 /* Return number of bytes at start of arglist that are not really args.  */
 376
 377 #define FRAME_ARGS_SKIP 68
 378
 379 /* Put here the code to store, into a struct frame_saved_regs,
 380    the addresses of the saved registers of frame described by FRAME_INFO.
 381    The actual code is in sparc-tdep.c so we can debug it sanely.  */
 382
 383 #define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)         \
 384         sparc_frame_find_saved_regs ((fi), &(frame_saved_regs))
 385 extern void sparc_frame_find_saved_regs ();
 386 \f
 387 /* Things needed for making the inferior call functions.  */
 388 /*
 389  * First of all, let me give my opinion of what the DUMMY_FRAME
 390  * actually looks like.
 391  *
 392  *               |                                 |
 393  *               |                                 |
 394  *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
 395  *               |                                 |
 396  *               |                                 |
 397  *               |                                 |
 398  *               |                                 |
 399  *               |  Frame of innermost program     |
 400  *               |           function              |
 401  *               |                                 |
 402  *               |                                 |
 403  *               |                                 |
 404  *               |                                 |
 405  *               |                                 |
 406  *               |---------------------------------|<-- sp (level 0), fp (c)
 407  *               |                                 |
 408  *     DUMMY     |             fp0-31              |
 409  *               |                                 |
 410  *               |             ------              |<-- fp - 0x80
 411  *     FRAME     |              g0-7               |<-- fp - 0xa0
 412  *               |              i0-7               |<-- fp - 0xc0
 413  *               |             other               |<-- fp - 0xe0
 414  *               |               ?                 |
 415  *               |               ?                 |
 416  *               |---------------------------------|<-- sp' = fp - 0x140
 417  *               |                                 |
 418  * xcution start |                                 |
 419  * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
 420  *               |                                 |
 421  *               |                                 |
 422  *               |---------------------------------|<-- sp'' = fp - 0x200
 423  *               |  align sp to 8 byte boundary    |
 424  *               |     ==> args to fn <==          |
 425  *  Room for     |                                 |
 426  * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
 427  *               |---------------------------------|<-- final sp (variable)
 428  *               |                                 |
 429  *               |   Where function called will    |
 430  *               |           build frame.          |
 431  *               |                                 |
 432  *               |                                 |
 433  *
 434  *   I understand everything in this picture except what the space
 435  * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
 436  * understand why there's a large chunk of CALL_DUMMY that never gets
 437  * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
 438  * are designed to do the same thing).
 439  *
 440  *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
 441  * register file stack down one.
 442  *
 443  *   call_function then writes CALL_DUMMY, pushes the args onto the
 444  * stack, and adjusts the stack pointer.
 445  *
 446  *   run_stack_dummy then starts execution (in the middle of
 447  * CALL_DUMMY, as directed by call_function).
 448  */
 449
 450 /* Push an empty stack frame, to record the current PC, etc.  */
 451
 452 #define PUSH_DUMMY_FRAME        sparc_push_dummy_frame ()
 453 #define POP_FRAME       sparc_pop_frame ()
 454
 455 void sparc_push_dummy_frame (), sparc_pop_frame ();
 456 /* This sequence of words is the instructions
 457
 458    save %sp,-0x140,%sp
 459    std  %f30,[%fp-0x08]
 460    std  %f28,[%fp-0x10]
 461    std  %f26,[%fp-0x18]
 462    std  %f24,[%fp-0x20]
 463    std  %f22,[%fp-0x28]
 464    std  %f20,[%fp-0x30]
 465    std  %f18,[%fp-0x38]
 466    std  %f16,[%fp-0x40]
 467    std  %f14,[%fp-0x48]
 468    std  %f12,[%fp-0x50]
 469    std  %f10,[%fp-0x58]
 470    std  %f8,[%fp-0x60]
 471    std  %f6,[%fp-0x68]
 472    std  %f4,[%fp-0x70]
 473    std  %f2,[%fp-0x78]
 474    std  %f0,[%fp-0x80]
 475    std  %g6,[%fp-0x88]
 476    std  %g4,[%fp-0x90]
 477    std  %g2,[%fp-0x98]
 478    std  %g0,[%fp-0xa0]
 479    std  %i6,[%fp-0xa8]
 480    std  %i4,[%fp-0xb0]
 481    std  %i2,[%fp-0xb8]
 482    std  %i0,[%fp-0xc0]
 483    nop ! stcsr  [%fp-0xc4]
 484    nop ! stfsr  [%fp-0xc8]
 485    nop ! wr     %npc,[%fp-0xcc]
 486    nop ! wr     %pc,[%fp-0xd0]
 487    rd   %tbr,%o0
 488    st   %o0,[%fp-0xd4]
 489    rd   %wim,%o1
 490    st   %o0,[%fp-0xd8]
 491    rd   %psr,%o0
 492    st   %o0,[%fp-0xdc]
 493    rd   %y,%o0
 494    st   %o0,[%fp-0xe0]
 495
 496      /..* The arguments are pushed at this point by GDB;
 497         no code is needed in the dummy for this.
 498         The CALL_DUMMY_START_OFFSET gives the position of
 499         the following ld instruction.  *../
 500
 501    ld   [%sp+0x58],%o5
 502    ld   [%sp+0x54],%o4
 503    ld   [%sp+0x50],%o3
 504    ld   [%sp+0x4c],%o2
 505    ld   [%sp+0x48],%o1
 506    call 0x00000000
 507    ld   [%sp+0x44],%o0
 508    nop
 509    ta 1
 510    nop
 511
 512    note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
 513    note that the `call' insn is a relative, not an absolute call.
 514    note that the `nop' at the end is needed to keep the trap from
 515         clobbering things (if NPC pointed to garbage instead).
 516
 517 We actually start executing at the `sethi', since the pushing of the
 518 registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
 519 real code, the arguments for the function called by the CALL would be
 520 pushed between the list of ST insns and the CALL, and we could allow
 521 it to execute through.  But the arguments have to be pushed by GDB
 522 after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
 523 insns to be performed again, lest the registers saved be taken for
 524 arguments.  */
 525
 526 #define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,    \
 527                      0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,    \
 528                      0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,    \
 529                      0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,    \
 530                      0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,    \
 531                      0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,    \
 532                      0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,    \
 533                      0x01000000, 0x91580000, 0xd027bf50, 0x93500000,    \
 534                      0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,    \
 535                      0xd027bf44, 0xda03a058, 0xd803a054, 0xd603a050,    \
 536                      0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,    \
 537                      0x01000000, 0x91d02001, 0x01000000, 0x01000000}
 538
 539 #define CALL_DUMMY_LENGTH 192
 540
 541 #define CALL_DUMMY_START_OFFSET 148
 542
 543 #define CALL_DUMMY_STACK_ADJUST 68
 544
 545 /* Insert the specified number of args and function address
 546    into a call sequence of the above form stored at DUMMYNAME.
 547
 548    For structs and unions, if the function was compiled with Sun cc,
 549    it expects 'unimp' after the call.  But gcc doesn't use that
 550    (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
 551    can assume it is operating on a pristine CALL_DUMMY, not one that
 552    has already been customized for a different function).  */
 553
 554 #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
 555 {                                                                       \
 556   *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));  \
 557   if (!gcc_p                                                            \
 558       && (TYPE_CODE (type) == TYPE_CODE_STRUCT                          \
 559           || TYPE_CODE (type) == TYPE_CODE_UNION))                      \
 560     *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);   \
 561 }
 562
 563 \f
 564 /* Sparc has no reliable single step ptrace call */
 565
 566 #define NO_SINGLE_STEP 1
 567 extern void single_step ();
 568
 569 /* We need two arguments (in general) to the "info frame" command.
 570    Note that the definition of this macro implies that there exists a
 571    function "setup_arbitrary_frame" in sparc-tdep.c */
 572
 573 #define FRAME_SPECIFICATION_DYADIC
 574
 575 /* To print every pair of float registers as a double, we use this hook.  */
 576
 577 #define PRINT_REGISTER_HOOK(regno)      \
 578   if (((regno) >= FP0_REGNUM)           \
 579    && ((regno) <  FP0_REGNUM + 32)      \
 580    && (0 == (regno & 1))) {             \
 581     char doublereg[8];          /* two float regs */    \
 582     if (!read_relative_register_raw_bytes (i  , doublereg  )    \
 583      && !read_relative_register_raw_bytes (i+1, doublereg+4)) { \
 584       printf("\t");                     \
 585       print_floating (doublereg, builtin_type_double, stdout);  \
 586     }                                   \
 587   }
 588