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 GDB 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 1, or (at your option)
   9 any later version.
  10
  11 GDB 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 GDB; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 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.  */
  68
  69 #define SKIP_PROLOGUE(pc) \
  70   { pc = skip_prologue (pc); }
  71 extern CORE_ADDR skip_prologue ();
  72
  73 /* Immediately after a function call, return the saved pc.
  74    Can't go through the frames for this because on some machines
  75    the new frame is not set up until the new function executes
  76    some instructions.  */
  77
  78 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
  79    encodes the structure size being returned.  If we detect such
  80    a fake insn, step past it.  */
  81
  82 #define PC_ADJUST(pc) ((read_memory_integer (pc + 8, 4) & 0xfffffe00) == 0 ? \
  83                        pc+12 : pc+8)
  84
  85 #define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
  86
  87 /* Address of the end of stack space.  We get this from the system
  88    include files. */
  89 #include <sys/types.h>
  90 #include <machine/vmparam.h>
  91 #define STACK_END_ADDR USRSTACK
  92
  93 #define INNER_THAN <
  94
  95 /* Stack has strict alignment.  */
  96
  97 #define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
  98
  99 /* Sequence of bytes for breakpoint instruction.  */
 100
 101 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
 102
 103 /* Amount PC must be decremented by after a breakpoint.
 104    This is often the number of bytes in BREAKPOINT
 105    but not always.  */
 106
 107 #define DECR_PC_AFTER_BREAK 0
 108
 109 /* Nonzero if instruction at PC is a return instruction.  */
 110 /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
 111
 112    Note: this does not work for functions returning structures under SunOS.  */
 113 #define ABOUT_TO_RETURN(pc) \
 114   ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
 115
 116 /* Return 1 if P points to an invalid floating point value.  */
 117
 118 #define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
 119
 120 /* Say how long (ordinary) registers are.  */
 121
 122 #define REGISTER_TYPE long
 123
 124 /* Number of machine registers */
 125
 126 #define NUM_REGS 72
 127
 128 /* Initializer for an array of names of registers.
 129    There should be NUM_REGS strings in this initializer.  */
 130
 131 #define REGISTER_NAMES  \
 132 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
 133   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
 134   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
 135   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
 136                                                                 \
 137   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",       \
 138   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
 139   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
 140   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
 141                                                                 \
 142   "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
 143
 144 /* Register numbers of various important registers.
 145    Note that some of these values are "real" register numbers,
 146    and correspond to the general registers of the machine,
 147    and some are "phony" register numbers which are too large
 148    to be actual register numbers as far as the user is concerned
 149    but do serve to get the desired values when passed to read_register.  */
 150
 151 #define G0_REGNUM 0             /* %g0 */
 152 #define G1_REGNUM 1             /* %g1 */
 153 #define O0_REGNUM 8             /* %o0 */
 154 #define SP_REGNUM 14            /* Contains address of top of stack, \
 155                                    which is also the bottom of the frame.  */
 156 #define RP_REGNUM 15            /* Contains return address value, *before* \
 157                                    any windows get switched.  */
 158 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
 159 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
 160                                    rather than in machine registers */
 161 #define I0_REGNUM 24            /* %i0 */
 162 #define FP_REGNUM 30            /* Contains address of executing stack frame */
 163 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
 164 #define FP0_REGNUM 32           /* Floating point register 0 */
 165 #define Y_REGNUM 64             /* Temp register for multiplication, etc.  */
 166 #define PS_REGNUM 65            /* Contains processor status */
 167 #define WIM_REGNUM 66           /* Window Invalid Mask (not really supported) */
 168 #define TBR_REGNUM 67           /* Trap Base Register (not really supported) */
 169 #define PC_REGNUM 68            /* Contains program counter */
 170 #define NPC_REGNUM 69           /* Contains next PC */
 171 #define FPS_REGNUM 70           /* Floating point status register */
 172 #define CPS_REGNUM 71           /* Coprocessor status register */
 173
 174 /* Total amount of space needed to store our copies of the machine's
 175    register state, the array `registers'.  */
 176 #define REGISTER_BYTES (32*4+32*4+8*4)
 177
 178 /* Index within `registers' of the first byte of the space for
 179    register N.  */
 180 /* ?? */
 181 #define REGISTER_BYTE(N)  ((N)*4)
 182
 183 /* The SPARC processor has register windows.  */
 184
 185 #define HAVE_REGISTER_WINDOWS
 186
 187 /* Is this register part of the register window system?  A yes answer
 188    implies that 1) The name of this register will not be the same in
 189    other frames, and 2) This register is automatically "saved" (out
 190    registers shifting into ins counts) upon subroutine calls and thus
 191    there is no need to search more than one stack frame for it. */
 192
 193 #define REGISTER_IN_WINDOW_P(regnum)    \
 194   ((regnum) >= 8 && (regnum) < 32)
 195
 196 /* Number of bytes of storage in the actual machine representation
 197    for register N.  */
 198
 199 /* On the SPARC, all regs are 4 bytes.  */
 200
 201 #define REGISTER_RAW_SIZE(N) (4)
 202
 203 /* Number of bytes of storage in the program's representation
 204    for register N.  */
 205
 206 /* On the SPARC, all regs are 4 bytes.  */
 207
 208 #define REGISTER_VIRTUAL_SIZE(N) (4)
 209
 210 /* Largest value REGISTER_RAW_SIZE can have.  */
 211
 212 #define MAX_REGISTER_RAW_SIZE 8
 213
 214 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 215
 216 #define MAX_REGISTER_VIRTUAL_SIZE 8
 217
 218 /* Nonzero if register N requires conversion
 219    from raw format to virtual format.  */
 220
 221 #define REGISTER_CONVERTIBLE(N) (0)
 222
 223 /* Convert data from raw format for register REGNUM
 224    to virtual format for register REGNUM.  */
 225
 226 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
 227 { bcopy ((FROM), (TO), 4); }
 228
 229 /* Convert data from virtual format for register REGNUM
 230    to raw format for register REGNUM.  */
 231
 232 #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
 233 { bcopy ((FROM), (TO), 4); }
 234
 235 /* Return the GDB type object for the "standard" data type
 236    of data in register N.  */
 237
 238 #define REGISTER_VIRTUAL_TYPE(N) \
 239  ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
 240   builtin_type_int)
 241
 242 /* Writing to %g0 is a noop (not an error or exception or anything like
 243    that, however).  */
 244
 245 #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
 246
 247 /* Store the address of the place in which to copy the structure the
 248    subroutine will return.  This is called from call_function. */
 249
 250 #define STORE_STRUCT_RETURN(ADDR, SP) \
 251   { target_write_memory ((SP)+(16*4), (char *)&(ADDR), 4); }
 252
 253 /* Extract from an array REGBUF containing the (raw) register state
 254    a function return value of type TYPE, and copy that, in virtual format,
 255    into VALBUF.  */
 256
 257 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)              \
 258   {                                                                        \
 259     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                 \
 260       {                                                                    \
 261         bcopy (((int *)(REGBUF))+FP0_REGNUM,                               \
 262                (VALBUF), TYPE_LENGTH(TYPE));                               \
 263       }                                                                    \
 264     else                                                                   \
 265       bcopy (((int *)(REGBUF))+8, (VALBUF), TYPE_LENGTH (TYPE));           \
 266   }
 267
 268 /* Write into appropriate registers a function return value
 269    of type TYPE, given in virtual format.  */
 270 /* On sparc, values are returned in register %o0.  */
 271 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 272   {                                                                          \
 273     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                   \
 274       /* Floating-point values are returned in the register pair */          \
 275       /* formed by %f0 and %f1 (doubles are, anyway).  */                    \
 276       write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF),            \
 277                             TYPE_LENGTH (TYPE));                             \
 278     else                                                                     \
 279       /* Other values are returned in register %o0.  */                      \
 280       write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),             \
 281                             TYPE_LENGTH (TYPE));  \
 282   }
 283
 284 /* Extract from an array REGBUF containing the (raw) register state
 285    the address in which a function should return its structure value,
 286    as a CORE_ADDR (or an expression that can be used as one).  */
 287
 288 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 289   (read_memory_integer (((int *)(REGBUF))[SP_REGNUM]+(16*4), 4))
 290
 291 \f
 292 /* Describe the pointer in each stack frame to the previous stack frame
 293    (its caller).  */
 294
 295 /* If you're not compiling this on a sun, you'll have to get a copy
 296    of <sun4/reg.h> (also known as <machine/reg.h>).  */
 297 #include <sun4/reg.h>
 298
 299 #define GET_RWINDOW_REG(FRAME, REG) \
 300   (read_memory_integer ((CORE_ADDR)&((struct rwindow *)FRAME)->REG, 4))
 301
 302 /* FRAME_CHAIN takes a frame's nominal address
 303    and produces the frame's chain-pointer.
 304
 305    FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
 306    and produces the nominal address of the caller frame.
 307
 308    However, if FRAME_CHAIN_VALID returns zero,
 309    it means the given frame is the outermost one and has no caller.
 310    In that case, FRAME_CHAIN_COMBINE is not used.  */
 311
 312 /* In the case of the Sun 4, the frame-chain's nominal address
 313    is held in the frame pointer register.
 314
 315    On the Sun4, the frame (in %fp) is %sp for the previous frame.
 316    From the previous frame's %sp, we can find the previous frame's
 317    %fp: it is in the save area just above the previous frame's %sp.
 318
 319    If we are setting up an arbitrary frame, we'll need to know where
 320    it ends.  Hence the following.  This part of the frame cache
 321    structure should be checked before it is assumed that this frame's
 322    bottom is in the stack pointer.
 323
 324    If there isn't a frame below this one, the bottom of this frame is
 325    in the stack pointer.
 326
 327    If there is a frame below this one, and the frame pointers are
 328    identical, it's a leaf frame and the bottoms are the same also.
 329
 330    Otherwise the bottom of this frame is the top of the next frame.  */
 331
 332 #define EXTRA_FRAME_INFO        FRAME_ADDR bottom;
 333 #define INIT_EXTRA_FRAME_INFO(fci)  \
 334   (fci)->bottom =                                       \
 335    ((fci)->next ?                                       \
 336     ((fci)->frame == (fci)->next_frame ?                \
 337      (fci)->next->bottom : (fci)->next->frame) :        \
 338     read_register (SP_REGNUM));
 339
 340 #define FRAME_CHAIN(thisframe) \
 341    GET_RWINDOW_REG ((thisframe)->frame, rw_in[6])
 342
 343 #define FRAME_CHAIN_VALID(chain, thisframe) \
 344   (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
 345
 346 #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
 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 mach-dep.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