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, 1994
4 Free Software Foundation, Inc.
5 Contributed by Michael Tiemann (tiemann@mcc.com)
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
29 * The following enums are purely for the convenience of the GDB
30 * developer, when debugging GDB.
33 enum { /* Sparc general registers, for all sparc versions. */
34 G0_REGNUM
, G1_REGNUM
, G2_REGNUM
, G3_REGNUM
,
35 G4_REGNUM
, G5_REGNUM
, G6_REGNUM
, G7_REGNUM
,
36 O0_REGNUM
, O1_REGNUM
, O2_REGNUM
, O3_REGNUM
,
37 O4_REGNUM
, O5_REGNUM
, O6_REGNUM
, O7_REGNUM
,
38 L0_REGNUM
, L1_REGNUM
, L2_REGNUM
, L3_REGNUM
,
39 L4_REGNUM
, L5_REGNUM
, L6_REGNUM
, L7_REGNUM
,
40 I0_REGNUM
, I1_REGNUM
, I2_REGNUM
, I3_REGNUM
,
41 I4_REGNUM
, I5_REGNUM
, I6_REGNUM
, I7_REGNUM
,
42 FP0_REGNUM
/* Floating point register 0 */
45 enum { /* Sparc general registers, alternate names. */
46 R0_REGNUM
, R1_REGNUM
, R2_REGNUM
, R3_REGNUM
,
47 R4_REGNUM
, R5_REGNUM
, R6_REGNUM
, R7_REGNUM
,
48 R8_REGNUM
, R9_REGNUM
, R10_REGNUM
, R11_REGNUM
,
49 R12_REGNUM
, R13_REGNUM
, R14_REGNUM
, R15_REGNUM
,
50 R16_REGNUM
, R17_REGNUM
, R18_REGNUM
, R19_REGNUM
,
51 R20_REGNUM
, R21_REGNUM
, R22_REGNUM
, R23_REGNUM
,
52 R24_REGNUM
, R25_REGNUM
, R26_REGNUM
, R27_REGNUM
,
53 R28_REGNUM
, R29_REGNUM
, R30_REGNUM
, R31_REGNUM
56 enum { /* Sparc32 control registers. */
57 PS_REGNUM
= 65, /* PC, NPC, and Y are omitted because */
58 WIM_REGNUM
= 66, /* they have different values depending on */
59 TBR_REGNUM
= 67, /* 32-bit / 64-bit mode. */
64 /* v9 misc. and priv. regs */
66 /* Note: specifying values explicitly for documentation purposes. */
67 enum { /* Sparc64 control registers, excluding Y, PC, and NPC. */
68 CCR_REGNUM
= 82, /* Condition Code Register (%xcc,%icc) */
69 FSR_REGNUM
= 83, /* Floating Point State */
70 FPRS_REGNUM
= 84, /* Floating Point Registers State */
71 ASI_REGNUM
= 86, /* Alternate Space Identifier */
72 VER_REGNUM
= 87, /* Version register */
73 TICK_REGNUM
= 88, /* Tick register */
74 PIL_REGNUM
= 89, /* Processor Interrupt Level */
75 PSTATE_REGNUM
= 90, /* Processor State */
76 TSTATE_REGNUM
= 91, /* Trap State */
77 TBA_REGNUM
= 92, /* Trap Base Address */
78 TL_REGNUM
= 93, /* Trap Level */
79 TT_REGNUM
= 94, /* Trap Type */
80 TPC_REGNUM
= 95, /* Trap pc */
81 TNPC_REGNUM
= 96, /* Trap npc */
82 WSTATE_REGNUM
= 97, /* Window State */
83 CWP_REGNUM
= 98, /* Current Window Pointer */
84 CANSAVE_REGNUM
= 99, /* Savable Windows */
85 CANRESTORE_REGNUM
= 100, /* Restorable Windows */
86 CLEANWIN_REGNUM
= 101, /* Clean Windows */
87 OTHERWIN_REGNUM
= 102, /* Other Windows */
88 ASR16_REGNUM
= 103, /* Ancillary State Registers */
104 ICC_REGNUM
= 119, /* 32 bit condition codes */
105 XCC_REGNUM
= 120, /* 64 bit condition codes */
106 FCC0_REGNUM
= 121, /* fp cc reg 0 */
107 FCC1_REGNUM
= 122, /* fp cc reg 1 */
108 FCC2_REGNUM
= 123, /* fp cc reg 2 */
109 FCC3_REGNUM
= 124 /* fp cc reg 3 */
113 * Make sparc target multi-archable: April 2000
116 #if defined (GDB_MULTI_ARCH) && (GDB_MULTI_ARCH > 0)
118 /* Multi-arch definition of TARGET_IS_SPARC64, TARGET_ELF64 */
119 #undef GDB_TARGET_IS_SPARC64
120 #define GDB_TARGET_IS_SPARC64 \
121 (sparc_intreg_size () == 8)
123 #define TARGET_ELF64 \
124 (sparc_intreg_size () == 8)
125 extern int sparc_intreg_size (void);
128 /* Non-multi-arch: if it isn't defined, define it to zero. */
129 #ifndef GDB_TARGET_IS_SPARC64
130 #define GDB_TARGET_IS_SPARC64 0
133 #define TARGET_ELF64 0
137 #if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
139 * The following defines must go away for MULTI_ARCH
142 /* Initializer for an array of names of registers.
143 There should be NUM_REGS strings in this initializer. */
145 #define REGISTER_NAMES \
146 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", \
147 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7", \
148 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", \
149 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7", \
151 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
152 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
153 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
154 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
156 "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" \
159 #define TARGET_BYTE_ORDER BIG_ENDIAN
161 /* Offset from address of function to start of its code.
162 Zero on most machines. */
164 #define FUNCTION_START_OFFSET 0
166 /* Amount PC must be decremented by after a breakpoint.
167 This is often the number of bytes in BREAKPOINT
170 #define DECR_PC_AFTER_BREAK 0
172 /* Say how long (ordinary) registers are. This is a piece of bogosity
173 used in push_word and a few other places; REGISTER_RAW_SIZE is the
174 real way to know how big a register is. */
176 #define REGISTER_SIZE 4
178 /* Number of machine registers */
182 #define SP_REGNUM 14 /* Contains address of top of stack, \
183 which is also the bottom of the frame. */
184 #define FP_REGNUM 30 /* Contains address of executing stack frame */
186 #define FP0_REGNUM 32 /* Floating point register 0 */
188 #define Y_REGNUM 64 /* Temp register for multiplication, etc. */
190 #define PC_REGNUM 68 /* Contains program counter */
192 #define NPC_REGNUM 69 /* Contains next PC */
195 /* Total amount of space needed to store our copies of the machine's
196 register state, the array `registers'. On the sparc, `registers'
197 contains the ins and locals, even though they are saved on the
198 stack rather than with the other registers, and this causes hair
199 and confusion in places like pop_frame. It might be better to
200 remove the ins and locals from `registers', make sure that
201 get_saved_register can get them from the stack (even in the
202 innermost frame), and make this the way to access them. For the
203 frame pointer we would do that via TARGET_READ_FP. On the other
204 hand, that is likely to be confusing or worse for flat frames. */
206 #define REGISTER_BYTES (32*4+32*4+8*4)
208 /* Index within `registers' of the first byte of the space for
211 #define REGISTER_BYTE(N) ((N)*4)
213 /* Number of bytes of storage in the actual machine representation for
216 /* On the SPARC, all regs are 4 bytes (except Sparc64, where they're 8). */
218 #define REGISTER_RAW_SIZE(N) (4)
220 /* Number of bytes of storage in the program's representation
223 /* On the SPARC, all regs are 4 bytes (except Sparc64, where they're 8). */
225 #define REGISTER_VIRTUAL_SIZE(N) (4)
227 /* Largest value REGISTER_RAW_SIZE can have. */
229 #define MAX_REGISTER_RAW_SIZE 8
231 /* Largest value REGISTER_VIRTUAL_SIZE can have. */
233 #define MAX_REGISTER_VIRTUAL_SIZE 8
235 /* Return the GDB type object for the "standard" data type
236 of data in register N. */
238 #define REGISTER_VIRTUAL_TYPE(N) \
239 ((N) < 32 ? builtin_type_int : (N) < 64 ? builtin_type_float : \
242 /* Sun /bin/cc gets this right as of SunOS 4.1.x. We need to define
243 BELIEVE_PCC_PROMOTION to get this right now that the code which
244 detects gcc2_compiled. is broken. This loses for SunOS 4.0.x and
247 #define BELIEVE_PCC_PROMOTION 1
249 /* Advance PC across any function entry prologue instructions
250 to reach some "real" code. SKIP_PROLOGUE_FRAMELESS_P advances
251 the PC past some of the prologue, but stops as soon as it
252 knows that the function has a frame. Its result is equal
253 to its input PC if the function is frameless, unequal otherwise. */
255 #define SKIP_PROLOGUE(PC) sparc_skip_prologue (PC, 0)
257 /* Immediately after a function call, return the saved pc.
258 Can't go through the frames for this because on some machines
259 the new frame is not set up until the new function executes
260 some instructions. */
262 #define SAVED_PC_AFTER_CALL(FRAME) PC_ADJUST (read_register (RP_REGNUM))
264 /* Stack grows downward. */
266 #define INNER_THAN(LHS,RHS) ((LHS) < (RHS))
268 /* Write into appropriate registers a function return value of type
269 TYPE, given in virtual format. */
271 #define STORE_RETURN_VALUE(TYPE, VALBUF) \
272 sparc_store_return_value (TYPE, VALBUF)
273 extern void sparc_store_return_value
PARAMS ((struct type
*, char *));
275 /* Extract from an array REGBUF containing the (raw) register state
276 the address in which a function should return its structure value,
277 as a CORE_ADDR (or an expression that can be used as one). */
279 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
280 sparc_extract_struct_value_address (REGBUF)
283 sparc_extract_struct_value_address
PARAMS ((char *));
285 /* If the current gcc for for this target does not produce correct
286 debugging information for float parameters, both prototyped and
287 unprototyped, then define this macro. This forces gdb to always
288 assume that floats are passed as doubles and then converted in the
291 #define COERCE_FLOAT_TO_DOUBLE(FORMAL, ACTUAL) (1)
293 /* Stack must be aligned on 64-bit boundaries when synthesizing
294 function calls (128-bit for sparc64). */
296 #define STACK_ALIGN(ADDR) sparc32_stack_align (ADDR)
297 extern CORE_ADDR
sparc32_stack_align (CORE_ADDR addr
);
299 /* Floating point is IEEE compatible. */
300 #define IEEE_FLOAT (1)
302 /* The Sparc returns long doubles on the stack. */
304 #define RETURN_VALUE_ON_STACK(TYPE) \
305 (TYPE_CODE(TYPE) == TYPE_CODE_FLT \
306 && TYPE_LENGTH(TYPE) > 8)
308 /* When passing a structure to a function, Sun cc passes the address
309 not the structure itself. It (under SunOS4) creates two symbols,
310 which we need to combine to a LOC_REGPARM. Gcc version two (as of
311 1.92) behaves like sun cc. REG_STRUCT_HAS_ADDR is smart enough to
312 distinguish between Sun cc, gcc version 1 and gcc version 2. */
314 #define REG_STRUCT_HAS_ADDR(GCC_P, TYPE) \
315 sparc_reg_struct_has_addr (GCC_P, TYPE)
316 extern int sparc_reg_struct_has_addr (int, struct type
*);
318 #endif /* GDB_MULTI_ARCH */
320 #if defined (GDB_MULTI_ARCH) && (GDB_MULTI_ARCH > 0)
322 * The following defines should ONLY appear for MULTI_ARCH.
325 /* Multi-arch the nPC and Y registers. */
326 #define Y_REGNUM (sparc_y_regnum ())
327 extern int sparc_npc_regnum (void);
328 extern int sparc_y_regnum (void);
330 #endif /* GDB_MULTI_ARCH */
332 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
333 encodes the structure size being returned. If we detect such
334 a fake insn, step past it. */
336 #define PC_ADJUST(PC) sparc_pc_adjust (PC)
337 extern CORE_ADDR sparc_pc_adjust
PARAMS ((CORE_ADDR
));
339 /* Advance PC across any function entry prologue instructions to reach
340 some "real" code. SKIP_PROLOGUE_FRAMELESS_P advances the PC past
341 some of the prologue, but stops as soon as it knows that the
342 function has a frame. Its result is equal to its input PC if the
343 function is frameless, unequal otherwise. */
345 #define SKIP_PROLOGUE_FRAMELESS_P(PC) sparc_skip_prologue (PC, 1)
346 extern CORE_ADDR sparc_skip_prologue
PARAMS ((CORE_ADDR
, int));
348 /* If an argument is declared "register", Sun cc will keep it in a register,
349 never saving it onto the stack. So we better not believe the "p" symbol
352 #define USE_REGISTER_NOT_ARG
354 /* For acc, there's no need to correct LBRAC entries by guessing how
355 they should work. In fact, this is harmful because the LBRAC
356 entries now all appear at the end of the function, not intermixed
357 with the SLINE entries. n_opt_found detects acc for Solaris binaries;
358 function_stab_type detects acc for SunOS4 binaries.
360 For binary from SunOS4 /bin/cc, need to correct LBRAC's.
362 For gcc, like acc, don't correct. */
364 #define SUN_FIXED_LBRAC_BUG \
366 || function_stab_type == N_STSYM \
367 || function_stab_type == N_GSYM \
368 || processing_gcc_compilation)
370 /* Do variables in the debug stabs occur after the N_LBRAC or before it?
371 acc: after, gcc: before, SunOS4 /bin/cc: before. */
373 #define VARIABLES_INSIDE_BLOCK(desc, gcc_p) \
376 || function_stab_type == N_STSYM \
377 || function_stab_type == N_GSYM))
379 /* Sequence of bytes for breakpoint instruction (ta 1). */
381 #define BREAKPOINT {0x91, 0xd0, 0x20, 0x01}
383 /* Register numbers of various important registers.
384 Note that some of these values are "real" register numbers,
385 and correspond to the general registers of the machine,
386 and some are "phony" register numbers which are too large
387 to be actual register numbers as far as the user is concerned
388 but do serve to get the desired values when passed to read_register. */
390 #define G0_REGNUM 0 /* %g0 */
391 #define G1_REGNUM 1 /* %g1 */
392 #define O0_REGNUM 8 /* %o0 */
393 #define RP_REGNUM 15 /* Contains return address value, *before* \
394 any windows get switched. */
395 #define O7_REGNUM 15 /* Last local reg not saved on stack frame */
396 #define L0_REGNUM 16 /* First local reg that's saved on stack frame
397 rather than in machine registers */
398 #define I0_REGNUM 24 /* %i0 */
399 #define I7_REGNUM 31 /* Last local reg saved on stack frame */
400 #define PS_REGNUM 65 /* Contains processor status */
401 #define PS_FLAG_CARRY 0x100000 /* Carry bit in PS */
402 #define WIM_REGNUM 66 /* Window Invalid Mask (not really supported) */
403 #define TBR_REGNUM 67 /* Trap Base Register (not really supported) */
404 #define FPS_REGNUM 70 /* Floating point status register */
405 #define CPS_REGNUM 71 /* Coprocessor status register */
407 /* Writing to %g0 is a noop (not an error or exception or anything like
410 #define CANNOT_STORE_REGISTER(regno) ((regno) == G0_REGNUM)
413 * FRAME_CHAIN and FRAME_INFO definitions, collected here for convenience.
416 #if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
418 * The following defines must go away for MULTI_ARCH.
421 /* Describe the pointer in each stack frame to the previous stack frame
424 /* FRAME_CHAIN takes a frame's nominal address
425 and produces the frame's chain-pointer. */
427 /* In the case of the Sun 4, the frame-chain's nominal address
428 is held in the frame pointer register.
430 On the Sun4, the frame (in %fp) is %sp for the previous frame.
431 From the previous frame's %sp, we can find the previous frame's
432 %fp: it is in the save area just above the previous frame's %sp.
434 If we are setting up an arbitrary frame, we'll need to know where
435 it ends. Hence the following. This part of the frame cache
436 structure should be checked before it is assumed that this frame's
437 bottom is in the stack pointer.
439 If there isn't a frame below this one, the bottom of this frame is
440 in the stack pointer.
442 If there is a frame below this one, and the frame pointers are
443 identical, it's a leaf frame and the bottoms are the same also.
445 Otherwise the bottom of this frame is the top of the next frame.
447 The bottom field is misnamed, since it might imply that memory from
448 bottom to frame contains this frame. That need not be true if
449 stack frames are allocated in different segments (e.g. some on a
450 stack, some on a heap in the data segment).
452 GCC 2.6 and later can generate ``flat register window'' code that
453 makes frames by explicitly saving those registers that need to be
454 saved. %i7 is used as the frame pointer, and the frame is laid out
455 so that flat and non-flat calls can be intermixed freely within a
456 program. Unfortunately for GDB, this means it must detect and
457 record the flatness of frames.
459 Since the prologue in a flat frame also tells us where fp and pc
460 have been stashed (the frame is of variable size, so their location
461 is not fixed), it's convenient to record them in the frame info. */
463 #define EXTRA_FRAME_INFO \
467 /* Following fields only relevant for flat frames. */ \
470 /* Add this to ->frame to get the value of the stack pointer at the */ \
471 /* time of the register saves. */ \
474 /* We need to override GET_SAVED_REGISTER so that we can deal with the way
475 outs change into ins in different frames. HAVE_REGISTER_WINDOWS can't
476 deal with this case and also handle flat frames at the same time. */
478 void sparc_get_saved_register
PARAMS ((char *raw_buffer
,
481 struct frame_info
* frame
,
483 enum lval_type
* lvalp
));
485 #define GET_SAVED_REGISTER(RAW_BUFFER, OPTIMIZED, ADDRP, FRAME, REGNUM, LVAL) \
486 sparc_get_saved_register (RAW_BUFFER, OPTIMIZED, ADDRP, \
489 #define FRAME_INIT_SAVED_REGS(FP) /*no-op */
491 #define INIT_EXTRA_FRAME_INFO(FROMLEAF, FCI) \
492 sparc_init_extra_frame_info (FROMLEAF, FCI)
493 extern void sparc_init_extra_frame_info
PARAMS ((int, struct frame_info
*));
495 #define FRAME_CHAIN(THISFRAME) (sparc_frame_chain (THISFRAME))
496 extern CORE_ADDR sparc_frame_chain
PARAMS ((struct frame_info
*));
498 /* A macro that tells us whether the function invocation represented
499 by FI does not have a frame on the stack associated with it. If it
500 does not, FRAMELESS is set to 1, else 0. */
502 #define FRAMELESS_FUNCTION_INVOCATION(FI) \
503 frameless_look_for_prologue (FI)
505 /* Where is the PC for a specific frame */
507 #define FRAME_SAVED_PC(FRAME) sparc_frame_saved_pc (FRAME)
508 extern CORE_ADDR sparc_frame_saved_pc
PARAMS ((struct frame_info
*));
510 /* If the argument is on the stack, it will be here. */
511 #define FRAME_ARGS_ADDRESS(FI) ((FI)->frame)
513 #define FRAME_LOCALS_ADDRESS(FI) ((FI)->frame)
515 /* Set VAL to the number of args passed to frame described by FI.
516 Can set VAL to -1, meaning no way to tell. */
518 /* We can't tell how many args there are
519 now that the C compiler delays popping them. */
520 #define FRAME_NUM_ARGS(FI) (-1)
522 /* Return number of bytes at start of arglist that are not really args. */
524 #define FRAME_ARGS_SKIP 68
526 #endif /* GDB_MULTI_ARCH */
528 #define PRINT_EXTRA_FRAME_INFO(FI) \
529 sparc_print_extra_frame_info (FI)
530 extern void sparc_print_extra_frame_info (struct frame_info
*);
532 /* INIT_EXTRA_FRAME_INFO needs the PC to detect flat frames. */
534 #define INIT_FRAME_PC(FROMLEAF, PREV) /* nothing */
535 #define INIT_FRAME_PC_FIRST(FROMLEAF, PREV) \
536 (PREV)->pc = ((FROMLEAF) ? SAVED_PC_AFTER_CALL ((PREV)->next) : \
537 (PREV)->next ? FRAME_SAVED_PC ((PREV)->next) : read_pc ());
539 /* Define other aspects of the stack frame. */
541 /* The location of I0 w.r.t SP. This is actually dependent on how the
542 system's window overflow/underflow routines are written. Most
543 vendors save the L regs followed by the I regs (at the higher
544 address). Some vendors get it wrong. */
546 #define FRAME_SAVED_L0 0
547 #define FRAME_SAVED_I0 (8 * REGISTER_RAW_SIZE (L0_REGNUM))
549 #define FRAME_STRUCT_ARGS_ADDRESS(FI) ((FI)->frame)
551 /* Things needed for making the inferior call functions. */
553 * First of all, let me give my opinion of what the DUMMY_FRAME
554 * actually looks like.
558 * + - - - - - - - - - - - - - - - - +<-- fp (level 0)
563 * | Frame of innermost program |
570 * |---------------------------------|<-- sp (level 0), fp (c)
574 * | ------ |<-- fp - 0x80
575 * FRAME | g0-7 |<-- fp - 0xa0
576 * | i0-7 |<-- fp - 0xc0
577 * | other |<-- fp - 0xe0
580 * |---------------------------------|<-- sp' = fp - 0x140
583 * sp' + 0x94 -->| CALL_DUMMY (x code) |
586 * |---------------------------------|<-- sp'' = fp - 0x200
587 * | align sp to 8 byte boundary |
588 * | ==> args to fn <== |
590 * i & l's + agg | CALL_DUMMY_STACK_ADJUST = 0x0x44|
591 * |---------------------------------|<-- final sp (variable)
593 * | Where function called will |
598 * I understand everything in this picture except what the space
599 * between fp - 0xe0 and fp - 0x140 is used for. Oh, and I don't
600 * understand why there's a large chunk of CALL_DUMMY that never gets
601 * executed (its function is superceeded by PUSH_DUMMY_FRAME; they
602 * are designed to do the same thing).
604 * PUSH_DUMMY_FRAME saves the registers above sp' and pushes the
605 * register file stack down one.
607 * call_function then writes CALL_DUMMY, pushes the args onto the
608 * stack, and adjusts the stack pointer.
610 * run_stack_dummy then starts execution (in the middle of
611 * CALL_DUMMY, as directed by call_function).
615 /* This sequence of words is the instructions
617 00: bc 10 00 01 mov %g1, %fp
618 04: 9d e3 80 00 save %sp, %g0, %sp
619 08: bc 10 00 02 mov %g2, %fp
620 0c: be 10 00 03 mov %g3, %i7
621 10: da 03 a0 58 ld [ %sp + 0x58 ], %o5
622 14: d8 03 a0 54 ld [ %sp + 0x54 ], %o4
623 18: d6 03 a0 50 ld [ %sp + 0x50 ], %o3
624 1c: d4 03 a0 4c ld [ %sp + 0x4c ], %o2
625 20: d2 03 a0 48 ld [ %sp + 0x48 ], %o1
626 24: 40 00 00 00 call <fun>
627 28: d0 03 a0 44 ld [ %sp + 0x44 ], %o0
633 * the first four instructions are necessary only on the simulator.
634 * this is a multiple of 8 (not only 4) bytes.
635 * the `call' insn is a relative, not an absolute call.
636 * the `nop' at the end is needed to keep the trap from
637 clobbering things (if NPC pointed to garbage instead).
640 #if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
642 * The following defines must go away for MULTI_ARCH.
645 #define CALL_DUMMY { 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003, \
646 0xda03a058, 0xd803a054, 0xd603a050, 0xd403a04c, \
647 0xd203a048, 0x40000000, 0xd003a044, 0x01000000, \
648 0x91d02001, 0x01000000 }
651 /* Size of the call dummy in bytes. */
653 #define CALL_DUMMY_LENGTH 0x38
655 /* Offset within call dummy of first instruction to execute. */
657 #define CALL_DUMMY_START_OFFSET 0
659 /* Offset within CALL_DUMMY of the 'call' instruction. */
661 #define CALL_DUMMY_CALL_OFFSET (CALL_DUMMY_START_OFFSET + 0x24)
663 /* Offset within CALL_DUMMY of the 'ta 1' trap instruction. */
665 #define CALL_DUMMY_BREAKPOINT_OFFSET (CALL_DUMMY_START_OFFSET + 0x30)
667 #define CALL_DUMMY_STACK_ADJUST 68
669 /* Call dummy method (eg. on stack, at entry point, etc.) */
671 #define CALL_DUMMY_LOCATION ON_STACK
673 /* Method for detecting dummy frames. */
675 #define PC_IN_CALL_DUMMY(PC, SP, FRAME_ADDRESS) \
676 pc_in_call_dummy_on_stack (PC, SP, FRAME_ADDRESS)
678 #endif /* GDB_MULTI_ARCH */
680 #endif /* CALL_DUMMY */
682 #if !defined (GDB_MULTI_ARCH) || (GDB_MULTI_ARCH == 0)
684 * The following defines must go away for MULTI_ARCH.
687 /* Insert the specified number of args and function address
688 into a call sequence of the above form stored at DUMMYNAME. */
690 #define FIX_CALL_DUMMY(DUMMYNAME, PC, FUN, NARGS, ARGS, TYPE, GCC_P) \
691 sparc_fix_call_dummy (DUMMYNAME, PC, FUN, TYPE, GCC_P)
692 void sparc_fix_call_dummy
PARAMS ((char *dummy
, CORE_ADDR pc
, CORE_ADDR fun
,
693 struct type
* value_type
, int using_gcc
));
695 /* Arguments smaller than an int must be promoted to ints when
696 synthesizing function calls. */
698 /* Push an empty stack frame, to record the current PC, etc. */
700 #define PUSH_DUMMY_FRAME sparc_push_dummy_frame ()
701 #define POP_FRAME sparc_pop_frame ()
703 void sparc_push_dummy_frame
PARAMS ((void));
704 void sparc_pop_frame
PARAMS ((void));
706 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
707 sparc32_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
710 sparc32_push_arguments
PARAMS ((int,
716 /* Store the address of the place in which to copy the structure the
717 subroutine will return. This is called from call_function_by_hand.
718 The ultimate mystery is, tho, what is the value "16"? */
720 #define STORE_STRUCT_RETURN(ADDR, SP) \
722 store_unsigned_integer (val, 4, (ADDR)); \
723 write_memory ((SP)+(16*4), val, 4); }
725 /* Default definition of USE_STRUCT_CONVENTION. */
727 #ifndef USE_STRUCT_CONVENTION
728 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
729 generic_use_struct_convention (GCC_P, TYPE)
732 /* Extract from an array REGBUF containing the (raw) register state a
733 function return value of type TYPE, and copy that, in virtual
734 format, into VALBUF. */
736 #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
737 sparc32_extract_return_value (TYPE, REGBUF, VALBUF)
739 sparc32_extract_return_value
PARAMS ((struct type
*, char[], char *));
741 #endif /* GDB_MULTI_ARCH */
744 /* Sparc has no reliable single step ptrace call */
746 #define SOFTWARE_SINGLE_STEP_P 1
747 extern void sparc_software_single_step
PARAMS ((unsigned int, int));
748 #define SOFTWARE_SINGLE_STEP(sig,bp_p) sparc_software_single_step (sig,bp_p)
750 /* We need more arguments in a frame specification for the
751 "frame" or "info frame" command. */
753 #define SETUP_ARBITRARY_FRAME(argc, argv) setup_arbitrary_frame (argc, argv)
754 extern struct frame_info
*setup_arbitrary_frame
PARAMS ((int, CORE_ADDR
*));
756 /* To print every pair of float registers as a double, we use this hook.
757 We also print the condition code registers in a readable format
758 (FIXME: can expand this to all control regs). */
760 #undef PRINT_REGISTER_HOOK
761 #define PRINT_REGISTER_HOOK(regno) \
762 sparc_print_register_hook (regno)
763 extern void sparc_print_register_hook
PARAMS ((int regno
));
765 /* Optimization for storing registers to the inferior. The hook
767 actually executes any deferred stores. It is called any time
768 we are going to proceed the child, or read its registers.
769 The hook CLEAR_DEFERRED_STORES is called when we want to throw
770 away the inferior process, e.g. when it dies or we kill it.
771 FIXME, this does not handle remote debugging cleanly. */
773 extern int deferred_stores
;
774 #define DO_DEFERRED_STORES \
775 if (deferred_stores) \
776 target_store_registers (-2);
777 #define CLEAR_DEFERRED_STORES \
780 /* Select the sparc disassembler */
782 #define TM_PRINT_INSN_MACH bfd_mach_sparc