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).
  40
  41    This still doesn't work if the argument is not one passed in a
  42    register (i.e. it's the 7th or later argument).  */
  43 #define REG_STRUCT_HAS_ADDR(gcc_p) (!(gcc_p))
  44 #define STRUCT_ARG_SYM_GARBAGE(gcc_p) (!(gcc_p))
  45
  46 /* If Pcc says that a parameter is a short, it's a short.  This is
  47    because the parameter does get passed in in a register as an int,
  48    but pcc puts it onto the stack frame as a short (not nailing
  49    whatever else might be there.  I'm not sure that I consider this
  50    swift.  Sigh.)
  51
  52    No, don't do this.  The problem here is that pcc says that the
  53    argument is in the upper half of the word reserved on the stack,
  54    but puts it in the lower half.  */
  55 /* #define BELIEVE_PCC_PROMOTION 1 */
  56 /* OK, I've added code to dbxread.c to deal with this case.  */
  57 #define BELIEVE_PCC_PROMOTION_TYPE
  58
  59 /* Offset from address of function to start of its code.
  60    Zero on most machines.  */
  61
  62 #define FUNCTION_START_OFFSET 0
  63
  64 /* Advance PC across any function entry prologue instructions
  65    to reach some "real" code.  */
  66
  67 #define SKIP_PROLOGUE(pc) \
  68   { pc = skip_prologue (pc); }
  69 extern CORE_ADDR skip_prologue ();
  70
  71 /* Immediately after a function call, return the saved pc.
  72    Can't go through the frames for this because on some machines
  73    the new frame is not set up until the new function executes
  74    some instructions.  */
  75
  76 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
  77    encodes the structure size being returned.  If we detect such
  78    a fake insn, step past it.  */
  79
  80 #define PC_ADJUST(pc) ((read_memory_integer (pc + 8, 4) & 0xfffffe00) == 0 ? \
  81                        pc+12 : pc+8)
  82
  83 #define SAVED_PC_AFTER_CALL(frame) PC_ADJUST (read_register (RP_REGNUM))
  84
  85 /* Address of the end of stack space.  We get this from the system
  86    include files. */
  87 #include <sys/types.h>
  88 #include <machine/vmparam.h>
  89 #define STACK_END_ADDR USRSTACK
  90
  91 #define INNER_THAN <
  92
  93 /* Stack has strict alignment.  */
  94
  95 #define STACK_ALIGN(ADDR) (((ADDR)+7)&-8)
  96
  97 /* Sequence of bytes for breakpoint instruction.  */
  98
  99 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
 100
 101 /* Amount PC must be decremented by after a breakpoint.
 102    This is often the number of bytes in BREAKPOINT
 103    but not always.  */
 104
 105 #define DECR_PC_AFTER_BREAK 0
 106
 107 /* Nonzero if instruction at PC is a return instruction.  */
 108 /* For SPARC, this is either a "jmpl %o7+8,%g0" or "jmpl %i7+8,%g0".
 109
 110    Note: this does not work for functions returning structures under SunOS.  */
 111 #define ABOUT_TO_RETURN(pc) \
 112   ((read_memory_integer (pc, 4)|0x00040000) == 0x81c7e008)
 113
 114 /* Return 1 if P points to an invalid floating point value.  */
 115
 116 #define INVALID_FLOAT(p, len) 0   /* Just a first guess; not checked */
 117
 118 /* Say how long (ordinary) registers are.  */
 119
 120 #define REGISTER_TYPE long
 121
 122 /* Number of machine registers */
 123
 124 #define NUM_REGS 72
 125
 126 /* Initializer for an array of names of registers.
 127    There should be NUM_REGS strings in this initializer.  */
 128
 129 #define REGISTER_NAMES  \
 130 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",       \
 131   "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",       \
 132   "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",       \
 133   "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",       \
 134                                                                 \
 135   "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",       \
 136   "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
 137   "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",       \
 138   "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",       \
 139                                                                 \
 140   "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
 141
 142 /* Register numbers of various important registers.
 143    Note that some of these values are "real" register numbers,
 144    and correspond to the general registers of the machine,
 145    and some are "phony" register numbers which are too large
 146    to be actual register numbers as far as the user is concerned
 147    but do serve to get the desired values when passed to read_register.  */
 148
 149 #define G0_REGNUM 0             /* %g0 */
 150 #define G1_REGNUM 1             /* %g1 */
 151 #define O0_REGNUM 8             /* %o0 */
 152 #define SP_REGNUM 14            /* Contains address of top of stack, \
 153                                    which is also the bottom of the frame.  */
 154 #define RP_REGNUM 15            /* Contains return address value, *before* \
 155                                    any windows get switched.  */
 156 #define O7_REGNUM 15            /* Last local reg not saved on stack frame */
 157 #define L0_REGNUM 16            /* First local reg that's saved on stack frame
 158                                    rather than in machine registers */
 159 #define I0_REGNUM 24            /* %i0 */
 160 #define FP_REGNUM 30            /* Contains address of executing stack frame */
 161 #define I7_REGNUM 31            /* Last local reg saved on stack frame */
 162 #define FP0_REGNUM 32           /* Floating point register 0 */
 163 #define Y_REGNUM 64             /* Temp register for multiplication, etc.  */
 164 #define PS_REGNUM 65            /* Contains processor status */
 165 #define WIM_REGNUM 66           /* Window Invalid Mask (not really supported) */
 166 #define TBR_REGNUM 67           /* Trap Base Register (not really supported) */
 167 #define PC_REGNUM 68            /* Contains program counter */
 168 #define NPC_REGNUM 69           /* Contains next PC */
 169 #define FPS_REGNUM 70           /* Floating point status register */
 170 #define CPS_REGNUM 71           /* Coprocessor status register */
 171
 172 /* Total amount of space needed to store our copies of the machine's
 173    register state, the array `registers'.  */
 174 #define REGISTER_BYTES (32*4+32*4+8*4)
 175
 176 /* Index within `registers' of the first byte of the space for
 177    register N.  */
 178 /* ?? */
 179 #define REGISTER_BYTE(N)  ((N)*4)
 180
 181 /* The SPARC processor has register windows.  */
 182
 183 #define HAVE_REGISTER_WINDOWS
 184
 185 /* Is this register part of the register window system?  A yes answer
 186    implies that 1) The name of this register will not be the same in
 187    other frames, and 2) This register is automatically "saved" (out
 188    registers shifting into ins counts) upon subroutine calls and thus
 189    there is no need to search more than one stack frame for it. */
 190
 191 #define REGISTER_IN_WINDOW_P(regnum)    \
 192   ((regnum) >= 8 && (regnum) < 32)
 193
 194 /* Number of bytes of storage in the actual machine representation
 195    for register N.  */
 196
 197 /* On the SPARC, all regs are 4 bytes.  */
 198
 199 #define REGISTER_RAW_SIZE(N) (4)
 200
 201 /* Number of bytes of storage in the program's representation
 202    for register N.  */
 203
 204 /* On the SPARC, all regs are 4 bytes.  */
 205
 206 #define REGISTER_VIRTUAL_SIZE(N) (4)
 207
 208 /* Largest value REGISTER_RAW_SIZE can have.  */
 209
 210 #define MAX_REGISTER_RAW_SIZE 8
 211
 212 /* Largest value REGISTER_VIRTUAL_SIZE can have.  */
 213
 214 #define MAX_REGISTER_VIRTUAL_SIZE 8
 215
 216 /* Nonzero if register N requires conversion
 217    from raw format to virtual format.  */
 218
 219 #define REGISTER_CONVERTIBLE(N) (0)
 220
 221 /* Convert data from raw format for register REGNUM
 222    to virtual format for register REGNUM.  */
 223
 224 #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
 225 { bcopy ((FROM), (TO), 4); }
 226
 227 /* Convert data from virtual format for register REGNUM
 228    to raw format for register REGNUM.  */
 229
 230 #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
 231 { bcopy ((FROM), (TO), 4); }
 232
 233 /* Return the GDB type object for the "standard" data type
 234    of data in register N.  */
 235
 236 #define REGISTER_VIRTUAL_TYPE(N) \
 237  ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
 238   builtin_type_int)
 239
 240 /* Writing to %g0 is a noop (not an error or exception or anything like
 241    that, however).  */
 242
 243 #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
 244
 245 /* Store the address of the place in which to copy the structure the
 246    subroutine will return.  This is called from call_function. */
 247
 248 #define STORE_STRUCT_RETURN(ADDR, SP) \
 249   { target_write_memory ((SP)+(16*4), (char *)&(ADDR), 4); }
 250
 251 /* Extract from an array REGBUF containing the (raw) register state
 252    a function return value of type TYPE, and copy that, in virtual format,
 253    into VALBUF.  */
 254
 255 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF)              \
 256   {                                                                        \
 257     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                 \
 258       {                                                                    \
 259         bcopy (((int *)(REGBUF))+FP0_REGNUM,                               \
 260                (VALBUF), TYPE_LENGTH(TYPE));                               \
 261       }                                                                    \
 262     else                                                                   \
 263       bcopy (((int *)(REGBUF))+8, (VALBUF), TYPE_LENGTH (TYPE));           \
 264   }
 265
 266 /* Write into appropriate registers a function return value
 267    of type TYPE, given in virtual format.  */
 268 /* On sparc, values are returned in register %o0.  */
 269 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
 270   {                                                                          \
 271     if (TYPE_CODE (TYPE) == TYPE_CODE_FLT)                                   \
 272       /* Floating-point values are returned in the register pair */          \
 273       /* formed by %f0 and %f1 (doubles are, anyway).  */                    \
 274       write_register_bytes (REGISTER_BYTE (FP0_REGNUM), (VALBUF),            \
 275                             TYPE_LENGTH (TYPE));                             \
 276     else                                                                     \
 277       /* Other values are returned in register %o0.  */                      \
 278       write_register_bytes (REGISTER_BYTE (O0_REGNUM), (VALBUF),             \
 279                             TYPE_LENGTH (TYPE));  \
 280   }
 281
 282 /* Extract from an array REGBUF containing the (raw) register state
 283    the address in which a function should return its structure value,
 284    as a CORE_ADDR (or an expression that can be used as one).  */
 285
 286 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
 287   (read_memory_integer (((int *)(REGBUF))[SP_REGNUM]+(16*4), 4))
 288
 289 \f
 290 /* Describe the pointer in each stack frame to the previous stack frame
 291    (its caller).  */
 292
 293 /* I don't know whether this will work for cross-debugging, even if you
 294    do get the right reg.h.  */
 295 #include <machine/reg.h>
 296
 297 #define GET_RWINDOW_REG(FRAME, REG) \
 298   (read_memory_integer ((CORE_ADDR)&((struct rwindow *)FRAME)->REG, 4))
 299
 300 /* FRAME_CHAIN takes a frame's nominal address
 301    and produces the frame's chain-pointer.
 302
 303    FRAME_CHAIN_COMBINE takes the chain pointer and the frame's nominal address
 304    and produces the nominal address of the caller frame.
 305
 306    However, if FRAME_CHAIN_VALID returns zero,
 307    it means the given frame is the outermost one and has no caller.
 308    In that case, FRAME_CHAIN_COMBINE is not used.  */
 309
 310 /* In the case of the Sun 4, the frame-chain's nominal address
 311    is held in the frame pointer register.
 312
 313    On the Sun4, the frame (in %fp) is %sp for the previous frame.
 314    From the previous frame's %sp, we can find the previous frame's
 315    %fp: it is in the save area just above the previous frame's %sp.
 316
 317    If we are setting up an arbitrary frame, we'll need to know where
 318    it ends.  Hence the following.  This part of the frame cache
 319    structure should be checked before it is assumed that this frame's
 320    bottom is in the stack pointer.
 321
 322    If there isn't a frame below this one, the bottom of this frame is
 323    in the stack pointer.
 324
 325    If there is a frame below this one, and the frame pointers are
 326    identical, it's a leaf frame and the bottoms are the same also.
 327
 328    Otherwise the bottom of this frame is the top of the next frame.  */
 329
 330 #define EXTRA_FRAME_INFO        FRAME_ADDR bottom;
 331 #define INIT_EXTRA_FRAME_INFO(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) \
 339    GET_RWINDOW_REG ((thisframe)->frame, rw_in[6])
 340
 341 #define FRAME_CHAIN_VALID(chain, thisframe) \
 342   (chain != 0 && (outside_startup_file (FRAME_SAVED_PC (thisframe))))
 343
 344 #define FRAME_CHAIN_COMBINE(chain, thisframe) (chain)
 345
 346 /* Define other aspects of the stack frame.  */
 347
 348 /* A macro that tells us whether the function invocation represented
 349    by FI does not have a frame on the stack associated with it.  If it
 350    does not, FRAMELESS is set to 1, else 0.  */
 351 #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
 352   (FRAMELESS) = frameless_look_for_prologue(FI)
 353
 354 /* Where is the PC for a specific frame */
 355
 356 #define FRAME_SAVED_PC(FRAME) frame_saved_pc (FRAME)
 357 CORE_ADDR frame_saved_pc ();
 358
 359 /* If the argument is on the stack, it will be here.  */
 360 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
 361
 362 #define FRAME_STRUCT_ARGS_ADDRESS(fi) ((fi)->frame)
 363
 364 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
 365
 366 /* Set VAL to the number of args passed to frame described by FI.
 367    Can set VAL to -1, meaning no way to tell.  */
 368
 369 /* We can't tell how many args there are
 370    now that the C compiler delays popping them.  */
 371 #define FRAME_NUM_ARGS(val,fi) (val = -1)
 372
 373 /* Return number of bytes at start of arglist that are not really args.  */
 374
 375 #define FRAME_ARGS_SKIP 68
 376
 377 /* Put here the code to store, into a struct frame_saved_regs,
 378    the addresses of the saved registers of frame described by FRAME_INFO.
 379    The actual code is in sparc-tdep.c so we can debug it sanely.  */
 380
 381 #define FRAME_FIND_SAVED_REGS(fi, frame_saved_regs)         \
 382         sparc_frame_find_saved_regs ((fi), &(frame_saved_regs))
 383 extern void sparc_frame_find_saved_regs ();
 384 \f
 385 /* Things needed for making the inferior call functions.  */
 386 /*
 387  * First of all, let me give my opinion of what the DUMMY_FRAME
 388  * actually looks like.
 389  *
 390  *               |                                 |
 391  *               |                                 |
 392  *               + - - - - - - - - - - - - - - - - +<-- fp (level 0)
 393  *               |                                 |
 394  *               |                                 |
 395  *               |                                 |
 396  *               |                                 |
 397  *               |  Frame of innermost program     |
 398  *               |           function              |
 399  *               |                                 |
 400  *               |                                 |
 401  *               |                                 |
 402  *               |                                 |
 403  *               |                                 |
 404  *               |---------------------------------|<-- sp (level 0), fp (c)
 405  *               |                                 |
 406  *     DUMMY     |             fp0-31              |
 407  *               |                                 |
 408  *               |             ------              |<-- fp - 0x80
 409  *     FRAME     |              g0-7               |<-- fp - 0xa0
 410  *               |              i0-7               |<-- fp - 0xc0
 411  *               |             other               |<-- fp - 0xe0
 412  *               |               ?                 |
 413  *               |               ?                 |
 414  *               |---------------------------------|<-- sp' = fp - 0x140
 415  *               |                                 |
 416  * xcution start |                                 |
 417  * sp' + 0x94 -->|        CALL_DUMMY (x code)      |
 418  *               |                                 |
 419  *               |                                 |
 420  *               |---------------------------------|<-- sp'' = fp - 0x200
 421  *               |  align sp to 8 byte boundary    |
 422  *               |     ==> args to fn <==          |
 423  *  Room for     |                                 |
 424  * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
 425  *               |---------------------------------|<-- final sp (variable)
 426  *               |                                 |
 427  *               |   Where function called will    |
 428  *               |           build frame.          |
 429  *               |                                 |
 430  *               |                                 |
 431  *
 432  *   I understand everything in this picture except what the space
 433  * between fp - 0xe0 and fp - 0x140 is used for.  Oh, and I don't
 434  * understand why there's a large chunk of CALL_DUMMY that never gets
 435  * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
 436  * are designed to do the same thing).
 437  *
 438  *   PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
 439  * register file stack down one.
 440  *
 441  *   call_function then writes CALL_DUMMY, pushes the args onto the
 442  * stack, and adjusts the stack pointer.
 443  *
 444  *   run_stack_dummy then starts execution (in the middle of
 445  * CALL_DUMMY, as directed by call_function).
 446  */
 447
 448 /* Push an empty stack frame, to record the current PC, etc.  */
 449
 450 #define PUSH_DUMMY_FRAME        sparc_push_dummy_frame ()
 451 #define POP_FRAME       sparc_pop_frame ()
 452
 453 void sparc_push_dummy_frame (), sparc_pop_frame ();
 454 /* This sequence of words is the instructions
 455
 456    save %sp,-0x140,%sp
 457    std  %f30,[%fp-0x08]
 458    std  %f28,[%fp-0x10]
 459    std  %f26,[%fp-0x18]
 460    std  %f24,[%fp-0x20]
 461    std  %f22,[%fp-0x28]
 462    std  %f20,[%fp-0x30]
 463    std  %f18,[%fp-0x38]
 464    std  %f16,[%fp-0x40]
 465    std  %f14,[%fp-0x48]
 466    std  %f12,[%fp-0x50]
 467    std  %f10,[%fp-0x58]
 468    std  %f8,[%fp-0x60]
 469    std  %f6,[%fp-0x68]
 470    std  %f4,[%fp-0x70]
 471    std  %f2,[%fp-0x78]
 472    std  %f0,[%fp-0x80]
 473    std  %g6,[%fp-0x88]
 474    std  %g4,[%fp-0x90]
 475    std  %g2,[%fp-0x98]
 476    std  %g0,[%fp-0xa0]
 477    std  %i6,[%fp-0xa8]
 478    std  %i4,[%fp-0xb0]
 479    std  %i2,[%fp-0xb8]
 480    std  %i0,[%fp-0xc0]
 481    nop ! stcsr  [%fp-0xc4]
 482    nop ! stfsr  [%fp-0xc8]
 483    nop ! wr     %npc,[%fp-0xcc]
 484    nop ! wr     %pc,[%fp-0xd0]
 485    rd   %tbr,%o0
 486    st   %o0,[%fp-0xd4]
 487    rd   %wim,%o1
 488    st   %o0,[%fp-0xd8]
 489    rd   %psr,%o0
 490    st   %o0,[%fp-0xdc]
 491    rd   %y,%o0
 492    st   %o0,[%fp-0xe0]
 493
 494      /..* The arguments are pushed at this point by GDB;
 495         no code is needed in the dummy for this.
 496         The CALL_DUMMY_START_OFFSET gives the position of
 497         the following ld instruction.  *../
 498
 499    ld   [%sp+0x58],%o5
 500    ld   [%sp+0x54],%o4
 501    ld   [%sp+0x50],%o3
 502    ld   [%sp+0x4c],%o2
 503    ld   [%sp+0x48],%o1
 504    call 0x00000000
 505    ld   [%sp+0x44],%o0
 506    nop
 507    ta 1
 508    nop
 509
 510    note that this is 192 bytes, which is a multiple of 8 (not only 4) bytes.
 511    note that the `call' insn is a relative, not an absolute call.
 512    note that the `nop' at the end is needed to keep the trap from
 513         clobbering things (if NPC pointed to garbage instead).
 514
 515 We actually start executing at the `sethi', since the pushing of the
 516 registers (as arguments) is done by PUSH_DUMMY_FRAME.  If this were
 517 real code, the arguments for the function called by the CALL would be
 518 pushed between the list of ST insns and the CALL, and we could allow
 519 it to execute through.  But the arguments have to be pushed by GDB
 520 after the PUSH_DUMMY_FRAME is done, and we cannot allow these ST
 521 insns to be performed again, lest the registers saved be taken for
 522 arguments.  */
 523
 524 #define CALL_DUMMY { 0x9de3bee0, 0xfd3fbff8, 0xf93fbff0, 0xf53fbfe8,    \
 525                      0xf13fbfe0, 0xed3fbfd8, 0xe93fbfd0, 0xe53fbfc8,    \
 526                      0xe13fbfc0, 0xdd3fbfb8, 0xd93fbfb0, 0xd53fbfa8,    \
 527                      0xd13fbfa0, 0xcd3fbf98, 0xc93fbf90, 0xc53fbf88,    \
 528                      0xc13fbf80, 0xcc3fbf78, 0xc83fbf70, 0xc43fbf68,    \
 529                      0xc03fbf60, 0xfc3fbf58, 0xf83fbf50, 0xf43fbf48,    \
 530                      0xf03fbf40, 0x01000000, 0x01000000, 0x01000000,    \
 531                      0x01000000, 0x91580000, 0xd027bf50, 0x93500000,    \
 532                      0xd027bf4c, 0x91480000, 0xd027bf48, 0x91400000,    \
 533                      0xd027bf44, 0xda03a058, 0xd803a054, 0xd603a050,    \
 534                      0xd403a04c, 0xd203a048, 0x40000000, 0xd003a044,    \
 535                      0x01000000, 0x91d02001, 0x01000000, 0x01000000}
 536
 537 #define CALL_DUMMY_LENGTH 192
 538
 539 #define CALL_DUMMY_START_OFFSET 148
 540
 541 #define CALL_DUMMY_STACK_ADJUST 68
 542
 543 /* Insert the specified number of args and function address
 544    into a call sequence of the above form stored at DUMMYNAME.
 545
 546    For structs and unions, if the function was compiled with Sun cc,
 547    it expects 'unimp' after the call.  But gcc doesn't use that
 548    (twisted) convention.  So leave a nop there for gcc (FIX_CALL_DUMMY
 549    can assume it is operating on a pristine CALL_DUMMY, not one that
 550    has already been customized for a different function).  */
 551
 552 #define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p)     \
 553 {                                                                       \
 554   *(int *)((char *) dummyname+168) = (0x40000000|((fun-(pc+168))>>2));  \
 555   if (!gcc_p                                                            \
 556       && (TYPE_CODE (type) == TYPE_CODE_STRUCT                          \
 557           || TYPE_CODE (type) == TYPE_CODE_UNION))                      \
 558     *(int *)((char *) dummyname+176) = (TYPE_LENGTH (type) & 0x1fff);   \
 559 }
 560
 561 \f
 562 /* Sparc has no reliable single step ptrace call */
 563
 564 #define NO_SINGLE_STEP 1
 565 extern void single_step ();
 566
 567 /* We need two arguments (in general) to the "info frame" command.
 568    Note that the definition of this macro implies that there exists a
 569    function "setup_arbitrary_frame" in mach-dep.c */
 570
 571 #define FRAME_SPECIFICATION_DYADIC
 572
 573 /* To print every pair of float registers as a double, we use this hook.  */
 574
 575 #define PRINT_REGISTER_HOOK(regno)      \
 576   if (((regno) >= FP0_REGNUM)           \
 577    && ((regno) <  FP0_REGNUM + 32)      \
 578    && (0 == (regno & 1))) {             \
 579     char doublereg[8];          /* two float regs */    \
 580     if (!read_relative_register_raw_bytes (i  , doublereg  )    \
 581      && !read_relative_register_raw_bytes (i+1, doublereg+4)) { \
 582       printf("\t");                     \
 583       print_floating (doublereg, builtin_type_double, stdout);  \
 584     }                                   \
 585   }
 586