gdb/config/sparc/tm-sparc.h

   1 /* Target machine sub-parameters for SPARC, for GDB, the GNU debugger.
   2    This is included by other tm-*.h files to define SPARC cpu-related info.
   3    Copyright 1986, 1987, 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
   4    Contributed by Michael Tiemann (tiemann@mcc.com)
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 #define TARGET_BYTE_ORDER BIG_ENDIAN
  23
  24 /* Floating point is IEEE compatible.  */
  25 #define IEEE_FLOAT
  26
  27 /* If an argument is declared "register", Sun cc will keep it in a register,
  28    never saving it onto the stack.  So we better not believe the "p" symbol
  29    descriptor stab.  */
  30
  31 #define USE_REGISTER_NOT_ARG
  32
  33 /* When passing a structure to a function, Sun cc passes the address
  34    not the structure itself.  It (under SunOS4) creates two symbols,
  35    which we need to combine to a LOC_REGPARM.  Gcc version two (as of
  36    1.92) behaves like sun cc.  REG_STRUCT_HAS_ADDR is smart enough to
  37    distinguish between Sun cc, gcc version 1 and gcc version 2.  */
  38
  39 #define REG_STRUCT_HAS_ADDR(gcc_p,type) (gcc_p != 1)
  40
  41 /* Sun /bin/cc gets this right as of SunOS 4.1.x.  We need to define
  42    BELIEVE_PCC_PROMOTION to get this right now that the code which
  43    detects gcc2_compiled. is broken.  This loses for SunOS 4.0.x and
  44    earlier.  */
  45
  46 #define BELIEVE_PCC_PROMOTION 1
  47
  48 /* For acc, there's no need to correct LBRAC entries by guessing how
  49    they should work.  In fact, this is harmful because the LBRAC
  50    entries now all appear at the end of the function, not intermixed
  51    with the SLINE entries.  n_opt_found detects acc for Solaris binaries;
  52    function_stab_type detects acc for SunOS4 binaries.
  53
  54    For binary from SunOS4 /bin/cc, need to correct LBRAC's.
  55
  56    For gcc, like acc, don't correct.  */
  57
  58 #define SUN_FIXED_LBRAC_BUG \
  59   (n_opt_found \
  60    || function_stab_type == N_STSYM \
  61    || function_stab_type == N_GSYM \
  62    || processing_gcc_compilation)
  63
  64 /* Do variables in the debug stabs occur after the N_LBRAC or before it?
  65    acc: after, gcc: before, SunOS4 /bin/cc: before.  */
  66
  67 #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \
  68   (!(gcc_p) \
  69    && (n_opt_found \
  70        || function_stab_type == N_STSYM \
  71        || function_stab_type == N_GSYM))
  72
  73 /* Offset from address of function to start of its code.
  74    Zero on most machines.  */
  75
  76 #define FUNCTION_START_OFFSET 0
  77
  78 /* Advance PC across any function entry prologue instructions
  79    to reach some "real" code.  SKIP_PROLOGUE_FRAMELESS_P advances
  80    the PC past some of the prologue, but stops as soon as it
  81    knows that the function has a frame.  Its result is equal
  82    to its input PC if the function is frameless, unequal otherwise.  */
  83
  84 #define SKIP_PROLOGUE(pc) \
  85   { pc = skip_prologue (pc, 0); }
  86 #define SKIP_PROLOGUE_FRAMELESS_P(pc) \
  87   { pc = skip_prologue (pc, 1); }
  88 extern CORE_ADDR skip_prologue ();
  89
  90 /* Immediately after a function call, return the saved pc.
  91    Can't go through the frames for this because on some machines
  92    the new frame is not set up until the new function executes
  93    some instructions.  */
  94
  95 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
  96    encodes the structure size being returned.  If we detect such
  97    a fake insn, step past it.  */
  98
  99 #define PC_ADJUST(pc) sparc_pc_adjust(pc)
 100 extern CORE_ADDR sparc_pc_adjust();
 101
 102 #define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
 103
 104 /* Stack grows downward.  */
 105
 106 #define INNER_THAN <
 107
 108 /* Stack has strict alignment.  */
 109
 110 #define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
 111
 112 /* Sequence of bytes for breakpoint instruction.  */
 113
 114 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
 115
 116 /* Amount PC must be decremented by after a breakpoint.
 117    This is often the number of bytes in BREAKPOINT
 118    but not always.  */
 119
 120 #define DECR_PC_AFTER_BREAK 0
 121
 122 /* Nonzero if instruction at PC is a return instruction.  */
 123 /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
 124
 125    Note: this does not work for functions returning structures under SunOS.  */
 126 #define ABOUT_TO_RETURN(pc) \
 127   ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
 128
 129 /* Say how long (ordinary) registers are.  This is a piece of bogosity
 130    used in push_word and a few other places; REGISTER_RAW_SIZE is the
 131    real way to know how big a register is.  */
 132
 133 #define REGISTER_SIZE 4
 134
 135 /* Number of machine registers */
 136
 137 #define NUM_REGS 72
 138
 139 /* Initializer for an array of names of registers.
 140    There should be NUM_REGS strings in this initializer.  */
 141
 142 #define REGISTER_NAMES  \
 143 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
 144   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
 145   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
 146   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
 147                                                                 \
 148   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",       \
 149   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
 150   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
 151   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
 152                                                                 \
 153   "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" }
 154
 155 /* Register numbers of various important registers.
 156    Note that some of these values are "real" register numbers,
 157    and correspond to the general registers of the machine,
 158    and some are "phony" register numbers which are too large
 159    to be actual register numbers as far as the user is concerned
 160    but do serve to get the desired values when passed to read_register.  */
 161
 162 #define G0_REGNUM 0             /* %g0 */
 163 #define G1_REGNUM 1             /* %g1 */
 164 #define O0_REGNUM 8             /* %o0 */
 165 #define SP_REGNUM 14            /* Contains address of top of stack, \
 166                                    which is also the bottom of the frame.  */
 167 #define RP_REGNUM 15            /* Contains return address value, *before* \
 168                                    any windows get switched.  */
 169 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
 170 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
 171                                    rather than in machine registers */
 172 #define I0_REGNUM 24            /* %i0 */
 173 #define FP_REGNUM 30            /* Contains address of executing stack frame */
 174 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
 175 #define FP0_REGNUM 32           /* Floating point register 0 */
 176 #define Y_REGNUM 64             /* Temp register for multiplication, etc.  */
 177 #define PS_REGNUM 65            /* Contains processor status */
 178 #define WIM_REGNUM 66           /* Window Invalid Mask (not really supported) */
 179 #define TBR_REGNUM 67           /* Trap Base Register (not really supported) */
 180 #define PC_REGNUM 68            /* Contains program counter */
 181 #define NPC_REGNUM 69           /* Contains next PC */
 182 #define FPS_REGNUM 70           /* Floating point status register */
 183 #define CPS_REGNUM 71           /* Coprocessor status register */
 184
 185 /* Total amount of space needed to store our copies of the machine's
 186    register state, the array `registers'.  On the sparc, `registers'
 187    contains the ins and locals, even though they are saved on the
 188    stack rather than with the other registers, and this causes hair
 189    and confusion in places like pop_frame.  It probably would be
 190    better to remove the ins and locals from `registers', make sure
 191    that get_saved_register can get them from the stack (even in the
 192    innermost frame), and make this the way to access them.  For the
 193    frame pointer we would do that via TARGET_READ_FP.  */
 194
 195 #define REGISTER_BYTES (32*4+32*4+8*4)
 196
 197 /* Index within `registers' of the first byte of the space for
 198    register N.  */
 199 /* ?? */
 200 #define REGISTER_BYTE(N)  ((N)*4)
 201
 202 /* The SPARC processor has register windows.  */
 203
 204 #define HAVE_REGISTER_WINDOWS
 205
 206 /* Is this register part of the register window system?  A yes answer
 207    implies that 1) The name of this register will not be the same in
 208    other frames, and 2) This register is automatically "saved" (out
 209    registers shifting into ins counts) upon subroutine calls and thus
 210    there is no need to search more than one stack frame for it. */
 211
 212 #define REGISTER_IN_WINDOW_P(regnum)    \
 213   ((regnum) >= 8 && (regnum) < 32)
 214
 215 /* Number of bytes of storage in the actual machine representation
 216    for register N.  */
 217
 218 /* On the SPARC, all regs are 4 bytes.  */
 219
 220 #define REGISTER_RAW_SIZE(N) (4)
 221
 222 /* Number of bytes of storage in the program's representation
 223    for register N.  */
 224
 225 /* On the SPARC, all regs are 4 bytes.  */
 226
 227 #define REGISTER_VIRTUAL_SIZE(N) (4)
 228
 229 /* Largest value REGISTER_RAW_SIZE can have.  */
 230
 231 #define MAX_REGISTER_RAW_SIZE 8
 232
 233 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 234
 235 #define MAX_REGISTER_VIRTUAL_SIZE 8
 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         memcpy ((VALBUF), ((int *)(REGBUF))+FP0_REGNUM, TYPE_LENGTH(TYPE));\
 264       }                                                                    \
 265     else                                                                   \
 266       memcpy ((VALBUF),                                                    \
 267               (char *)(REGBUF) + 4 * 8 +                                   \
 268               (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)),        \
 269               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
 295 extern CORE_ADDR
 296 sparc_extract_struct_value_address PARAMS ((char [REGISTER_BYTES]));
 297
 298 \f
 299 /* Describe the pointer in each stack frame to the previous stack frame
 300    (its caller).  */
 301
 302 /* FRAME_CHAIN takes a frame's nominal address
 303    and produces the frame's chain-pointer. */
 304
 305 /* In the case of the Sun 4, the frame-chain's nominal address
 306    is held in the frame pointer register.
 307
 308    On the Sun4, the frame (in %fp) is %sp for the previous frame.
 309    From the previous frame's %sp, we can find the previous frame's
 310    %fp: it is in the save area just above the previous frame's %sp.
 311
 312    If we are setting up an arbitrary frame, we'll need to know where
 313    it ends.  Hence the following.  This part of the frame cache
 314    structure should be checked before it is assumed that this frame's
 315    bottom is in the stack pointer.
 316
 317    If there isn't a frame below this one, the bottom of this frame is
 318    in the stack pointer.
 319
 320    If there is a frame below this one, and the frame pointers are
 321    identical, it's a leaf frame and the bottoms are the same also.
 322
 323    Otherwise the bottom of this frame is the top of the next frame.
 324
 325    The bottom field is misnamed, since it might imply that memory from
 326    bottom to frame contains this frame.  That need not be true if
 327    stack frames are allocated in different segments (e.g. some on a
 328    stack, some on a heap in the data segment).  */
 329
 330 #define EXTRA_FRAME_INFO        FRAME_ADDR bottom;
 331 #define INIT_EXTRA_FRAME_INFO(fromleaf, fci)  \
 332   (fci)->bottom =                                       \
 333    ((fci)->next ?                                       \
 334     ((fci)->frame == (fci)->next->frame ?               \
 335      (fci)->next->bottom : (fci)->next->frame) :        \
 336     read_register (SP_REGNUM));
 337
 338 #define FRAME_CHAIN(thisframe) (sparc_frame_chain (thisframe))
 339 CORE_ADDR sparc_frame_chain ();
 340
 341 /* Define other aspects of the stack frame.  */
 342
 343 /* A macro that tells us whether the function invocation represented
 344    by FI does not have a frame on the stack associated with it.  If it
 345    does not, FRAMELESS is set to 1, else 0.  */
 346 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
 347   (FRAMELESS) = frameless_look_for_prologue(FI)
 348
 349 /* The location of I0 w.r.t SP.  This is actually dependent on how the system's
 350    window overflow/underflow routines are written.  Most vendors save the L regs
 351    followed by the I regs (at the higher address).  Some vendors get it wrong.
 352  */
 353
 354 #define FRAME_SAVED_L0  0
 355 #define FRAME_SAVED_I0  (8 * REGISTER_RAW_SIZE (L0_REGNUM))
 356
 357 /* Where is the PC for a specific frame */
 358
 359 #define FRAME_SAVED_PC(FRAME) sparc_frame_saved_pc (FRAME)
 360 CORE_ADDR sparc_frame_saved_pc ();
 361
 362 /* If the argument is on the stack, it will be here.  */
 363 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 364
 365 #define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
 366
 367 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 368
 369 /* Set VAL to the number of args passed to frame described by FI.
 370    Can set VAL to -1, meaning no way to tell.  */
 371
 372 /* We can't tell how many args there are
 373    now that the C compiler delays popping them.  */
 374 #define FRAME_NUM_ARGS(val,fi) (val = -1)
 375
 376 /* Return number of bytes at start of arglist that are not really args.  */
 377
 378 #define FRAME_ARGS_SKIP 68
 379
 380 /* Put here the code to store, into a struct frame_saved_regs,
 381    the addresses of the saved registers of frame described by FRAME_INFO.
 382    The actual code is in sparc-tdep.c so we can debug it sanely.  */
 383
 384 #define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)         \
 385         sparc_frame_find_saved_regs ((fi), &(frame_saved_regs))
 386 extern void sparc_frame_find_saved_regs ();
 387 \f
 388 /* Things needed for making the inferior call functions.  */
 389 /*
 390  * First of all, let me give my opinion of what the DUMMY_FRAME
 391  * actually looks like.
 392  *
 393  *               |                                 |
 394  *               |                                 |
 395  *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
 396  *               |                                 |
 397  *               |                                 |
 398  *               |                                 |
 399  *               |                                 |
 400  *               |  Frame of innermost program     |
 401  *               |           function              |
 402  *               |                                 |
 403  *               |                                 |
 404  *               |                                 |
 405  *               |                                 |
 406  *               |                                 |
 407  *               |---------------------------------|<-- sp (level 0), fp (c)
 408  *               |                                 |
 409  *     DUMMY     |             fp0-31              |
 410  *               |                                 |
 411  *               |             ------              |<-- fp - 0x80
 412  *     FRAME     |              g0-7               |<-- fp - 0xa0
 413  *               |              i0-7               |<-- fp - 0xc0
 414  *               |             other               |<-- fp - 0xe0
 415  *               |               ?                 |
 416  *               |               ?                 |
 417  *               |---------------------------------|<-- sp' = fp - 0x140
 418  *               |                                 |
 419  * xcution start |                                 |
 420  * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
 421  *               |                                 |
 422  *               |                                 |
 423  *               |---------------------------------|<-- sp'' = fp - 0x200
 424  *               |  align sp to 8 byte boundary    |
 425  *               |     ==> args to fn <==          |
 426  *  Room for     |                                 |
 427  * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
 428  *               |---------------------------------|<-- final sp (variable)
 429  *               |                                 |
 430  *               |   Where function called will    |
 431  *               |           build frame.          |
 432  *               |                                 |
 433  *               |                                 |
 434  *
 435  *   I understand everything in this picture except what the space
 436  * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
 437  * understand why there's a large chunk of CALL_DUMMY that never gets
 438  * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
 439  * are designed to do the same thing).
 440  *
 441  *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
 442  * register file stack down one.
 443  *
 444  *   call_function then writes CALL_DUMMY, pushes the args onto the
 445  * stack, and adjusts the stack pointer.
 446  *
 447  *   run_stack_dummy then starts execution (in the middle of
 448  * CALL_DUMMY, as directed by call_function).
 449  */
 450
 451 /* Push an empty stack frame, to record the current PC, etc.  */
 452
 453 #define PUSH_DUMMY_FRAME        sparc_push_dummy_frame ()
 454 #define POP_FRAME       sparc_pop_frame ()
 455
 456 void sparc_push_dummy_frame (), sparc_pop_frame ();
 457 /* This sequence of words is the instructions
 458
 459    save %sp,-0x140,%sp
 460    std  %f30,[%fp-0x08]
 461    std  %f28,[%fp-0x10]
 462    std  %f26,[%fp-0x18]
 463    std  %f24,[%fp-0x20]
 464    std  %f22,[%fp-0x28]
 465    std  %f20,[%fp-0x30]
 466    std  %f18,[%fp-0x38]
 467    std  %f16,[%fp-0x40]
 468    std  %f14,[%fp-0x48]
 469    std  %f12,[%fp-0x50]
 470    std  %f10,[%fp-0x58]
 471    std  %f8,[%fp-0x60]
 472    std  %f6,[%fp-0x68]
 473    std  %f4,[%fp-0x70]
 474    std  %f2,[%fp-0x78]
 475    std  %f0,[%fp-0x80]
 476    std  %g6,[%fp-0x88]
 477    std  %g4,[%fp-0x90]
 478    std  %g2,[%fp-0x98]
 479    std  %g0,[%fp-0xa0]
 480    std  %i6,[%fp-0xa8]
 481    std  %i4,[%fp-0xb0]
 482    std  %i2,[%fp-0xb8]
 483    std  %i0,[%fp-0xc0]
 484    nop ! stcsr  [%fp-0xc4]
 485    nop ! stfsr  [%fp-0xc8]
 486    nop ! wr     %npc,[%fp-0xcc]
 487    nop ! wr     %pc,[%fp-0xd0]
 488    rd   %tbr,%o0
 489    st   %o0,[%fp-0xd4]
 490    rd   %wim,%o1
 491    st   %o0,[%fp-0xd8]
 492    rd   %psr,%o0
 493    st   %o0,[%fp-0xdc]
 494    rd   %y,%o0
 495    st   %o0,[%fp-0xe0]
 496
 497      /..* The arguments are pushed at this point by GDB;
 498         no code is needed in the dummy for this.
 499         The CALL_DUMMY_START_OFFSET gives the position of
 500         the following ld instruction.  *../
 501
 502    ld   [%sp+0x58],%o5
 503    ld   [%sp+0x54],%o4
 504    ld   [%sp+0x50],%o3
 505    ld   [%sp+0x4c],%o2
 506    ld   [%sp+0x48],%o1
 507    call 0x00000000
 508    ld   [%sp+0x44],%o0
 509    nop
 510    ta 1
 511    nop
 512
 513    note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
 514    note that the `call' insn is a relative, not an absolute call.
 515    note that the `nop' at the end is needed to keep the trap from
 516         clobbering things (if NPC pointed to garbage instead).
 517
 518 We actually start executing at the `sethi', since the pushing of the
 519 registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
 520 real code, the arguments for the function called by the CALL would be
 521 pushed between the list of ST insns and the CALL, and we could allow
 522 it to execute through.  But the arguments have to be pushed by GDB
 523 after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
 524 insns to be performed again, lest the registers saved be taken for
 525 arguments.  */
 526
 527 #define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,    \
 528                      0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,    \
 529                      0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,    \
 530                      0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,    \
 531                      0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,    \
 532                      0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,    \
 533                      0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,    \
 534                      0x01000000, 0x91580000, 0xd027bf50, 0x93500000,    \
 535                      0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,    \
 536                      0xd027bf44, 0xda03a058, 0xd803a054, 0xd603a050,    \
 537                      0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,    \
 538                      0x01000000, 0x91d02001, 0x01000000, 0x01000000}
 539
 540 #define CALL_DUMMY_LENGTH 192
 541
 542 #define CALL_DUMMY_START_OFFSET 148
 543
 544 #define CALL_DUMMY_BREAKPOINT_OFFSET (CALL_DUMMY_START_OFFSET + (8 * 4))
 545
 546 #define CALL_DUMMY_STACK_ADJUST 68
 547
 548 /* Insert the specified number of args and function address
 549    into a call sequence of the above form stored at DUMMYNAME.
 550
 551    For structs and unions, if the function was compiled with Sun cc,
 552    it expects 'unimp' after the call.  But gcc doesn't use that
 553    (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
 554    can assume it is operating on a pristine CALL_DUMMY, not one that
 555    has already been customized for a different function).  */
 556
 557 #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
 558 {                                                                       \
 559   *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));  \
 560   if (!gcc_p                                                            \
 561       && (TYPE_CODE (type) == TYPE_CODE_STRUCT                          \
 562           || TYPE_CODE (type) == TYPE_CODE_UNION))                      \
 563     *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);   \
 564 }
 565
 566 \f
 567 /* Sparc has no reliable single step ptrace call */
 568
 569 #define NO_SINGLE_STEP 1
 570 extern void single_step ();
 571
 572 /* We need more arguments in a frame specification for the
 573    "frame" or "info frame" command.  */
 574
 575 #define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
 576 /* FIXME:  Depends on equivalence between FRAME and "struct frame_info *",
 577    and equivalence between CORE_ADDR and FRAME_ADDR. */
 578 extern struct frame_info *setup_arbitrary_frame PARAMS ((int, CORE_ADDR *));
 579
 580 /* To print every pair of float registers as a double, we use this hook.  */
 581
 582 #define PRINT_REGISTER_HOOK(regno)      \
 583   if (((regno) >= FP0_REGNUM)           \
 584    && ((regno) <  FP0_REGNUM + 32)      \
 585    && (0 == ((regno) & 1))) {           \
 586     char doublereg[8];          /* two float regs */    \
 587     if (!read_relative_register_raw_bytes ((regno)  , doublereg  )      \
 588      && !read_relative_register_raw_bytes ((regno)+1, doublereg+4)) {   \
 589       printf("\t");                     \
 590       print_floating (doublereg, builtin_type_double, stdout);  \
 591     }                                   \
 592   }
 593
 594 /* Optimization for storing registers to the inferior.  The hook
 595    DO_DEFERRED_STORES
 596    actually executes any deferred stores.  It is called any time
 597    we are going to proceed the child, or read its registers.
 598    The hook CLEAR_DEFERRED_STORES is called when we want to throw
 599    away the inferior process, e.g. when it dies or we kill it.
 600    FIXME, this does not handle remote debugging cleanly.  */
 601
 602 extern int deferred_stores;
 603 #define DO_DEFERRED_STORES      \
 604   if (deferred_stores)          \
 605     target_store_registers (-2);
 606 #define CLEAR_DEFERRED_STORES   \
 607   deferred_stores = 0;