1 /* Target-dependent code for the SPARC for GDB, the GNU debugger.
3 Copyright 1986, 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation,
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. */
24 /* ??? Support for calling functions from gdb in sparc64 is unfinished. */
27 #include "arch-utils.h"
33 #include "gdb_string.h"
38 #include <sys/procfs.h>
39 /* Prototypes for supply_gregset etc. */
44 #include "gdb_assert.h"
46 #include "symfile.h" /* for 'entry_point_address' */
49 * Some local macros that have multi-arch and non-multi-arch versions:
52 #if (GDB_MULTI_ARCH > 0)
55 // OBSOLETE /* Does the target have Floating Point registers? */
56 // OBSOLETE #define SPARC_HAS_FPU (gdbarch_tdep (current_gdbarch)->has_fpu)
58 #define SPARC_HAS_FPU 1
59 /* Number of bytes devoted to Floating Point registers: */
60 #define FP_REGISTER_BYTES (gdbarch_tdep (current_gdbarch)->fp_register_bytes)
61 /* Highest numbered Floating Point register. */
62 #define FP_MAX_REGNUM (gdbarch_tdep (current_gdbarch)->fp_max_regnum)
63 /* Size of a general (integer) register: */
64 #define SPARC_INTREG_SIZE (gdbarch_tdep (current_gdbarch)->intreg_size)
65 /* Offset within the call dummy stack of the saved registers. */
66 #define DUMMY_REG_SAVE_OFFSET (gdbarch_tdep (current_gdbarch)->reg_save_offset)
68 #else /* non-multi-arch */
71 /* Does the target have Floating Point registers? */
73 // OBSOLETE #if defined(TARGET_SPARCLET) || defined(TARGET_SPARCLITE)
74 // OBSOLETE #define SPARC_HAS_FPU 0
76 // OBSOLETE #define SPARC_HAS_FPU 1
79 #define SPARC_HAS_FPU 1
81 /* Number of bytes devoted to Floating Point registers: */
82 #if (GDB_TARGET_IS_SPARC64)
83 #define FP_REGISTER_BYTES (64 * 4)
86 #define FP_REGISTER_BYTES (32 * 4)
88 #define FP_REGISTER_BYTES 0
92 /* Highest numbered Floating Point register. */
93 #if (GDB_TARGET_IS_SPARC64)
94 #define FP_MAX_REGNUM (FP0_REGNUM + 48)
96 #define FP_MAX_REGNUM (FP0_REGNUM + 32)
99 /* Size of a general (integer) register: */
100 #define SPARC_INTREG_SIZE (REGISTER_RAW_SIZE (G0_REGNUM))
102 /* Offset within the call dummy stack of the saved registers. */
103 #if (GDB_TARGET_IS_SPARC64)
104 #define DUMMY_REG_SAVE_OFFSET (128 + 16)
106 #define DUMMY_REG_SAVE_OFFSET 0x60
109 #endif /* GDB_MULTI_ARCH */
114 // OBSOLETE int has_fpu;
116 int fp_register_bytes
;
121 int call_dummy_call_offset
;
125 /* Now make GDB_TARGET_IS_SPARC64 a runtime test. */
126 /* FIXME MVS: or try testing bfd_arch_info.arch and bfd_arch_info.mach ...
127 * define GDB_TARGET_IS_SPARC64 \
128 * (TARGET_ARCHITECTURE->arch == bfd_arch_sparc && \
129 * (TARGET_ARCHITECTURE->mach == bfd_mach_sparc_v9 || \
130 * TARGET_ARCHITECTURE->mach == bfd_mach_sparc_v9a))
134 extern int stop_after_trap
;
136 /* We don't store all registers immediately when requested, since they
137 get sent over in large chunks anyway. Instead, we accumulate most
138 of the changes and send them over once. "deferred_stores" keeps
139 track of which sets of registers we have locally-changed copies of,
140 so we only need send the groups that have changed. */
142 int deferred_stores
= 0; /* Accumulated stores we want to do eventually. */
146 // OBSOLETE /* Some machines, such as Fujitsu SPARClite 86x, have a bi-endian mode
147 // OBSOLETE where instructions are big-endian and data are little-endian.
148 // OBSOLETE This flag is set when we detect that the target is of this type. */
150 // OBSOLETE int bi_endian = 0;
154 /* Fetch a single instruction. Even on bi-endian machines
155 such as sparc86x, instructions are always big-endian. */
158 fetch_instruction (CORE_ADDR pc
)
160 unsigned long retval
;
162 unsigned char buf
[4];
164 read_memory (pc
, buf
, sizeof (buf
));
166 /* Start at the most significant end of the integer, and work towards
167 the least significant. */
169 for (i
= 0; i
< sizeof (buf
); ++i
)
170 retval
= (retval
<< 8) | buf
[i
];
175 /* Branches with prediction are treated like their non-predicting cousins. */
176 /* FIXME: What about floating point branches? */
178 /* Macros to extract fields from sparc instructions. */
179 #define X_OP(i) (((i) >> 30) & 0x3)
180 #define X_RD(i) (((i) >> 25) & 0x1f)
181 #define X_A(i) (((i) >> 29) & 1)
182 #define X_COND(i) (((i) >> 25) & 0xf)
183 #define X_OP2(i) (((i) >> 22) & 0x7)
184 #define X_IMM22(i) ((i) & 0x3fffff)
185 #define X_OP3(i) (((i) >> 19) & 0x3f)
186 #define X_RS1(i) (((i) >> 14) & 0x1f)
187 #define X_I(i) (((i) >> 13) & 1)
188 #define X_IMM13(i) ((i) & 0x1fff)
189 /* Sign extension macros. */
190 #define X_SIMM13(i) ((X_IMM13 (i) ^ 0x1000) - 0x1000)
191 #define X_DISP22(i) ((X_IMM22 (i) ^ 0x200000) - 0x200000)
192 #define X_CC(i) (((i) >> 20) & 3)
193 #define X_P(i) (((i) >> 19) & 1)
194 #define X_DISP19(i) ((((i) & 0x7ffff) ^ 0x40000) - 0x40000)
195 #define X_RCOND(i) (((i) >> 25) & 7)
196 #define X_DISP16(i) ((((((i) >> 6) && 0xc000) | ((i) & 0x3fff)) ^ 0x8000) - 0x8000)
197 #define X_FCN(i) (((i) >> 25) & 31)
201 Error
, not_branch
, bicc
, bicca
, ba
, baa
, ticc
, ta
, done_retry
204 /* Simulate single-step ptrace call for sun4. Code written by Gary
205 Beihl (beihl@mcc.com). */
207 /* npc4 and next_pc describe the situation at the time that the
208 step-breakpoint was set, not necessary the current value of NPC_REGNUM. */
209 static CORE_ADDR next_pc
, npc4
, target
;
210 static int brknpc4
, brktrg
;
211 typedef char binsn_quantum
[BREAKPOINT_MAX
];
212 static binsn_quantum break_mem
[3];
214 static branch_type
isbranch (long, CORE_ADDR
, CORE_ADDR
*);
216 /* single_step() is called just before we want to resume the inferior,
217 if we want to single-step it but there is no hardware or kernel single-step
218 support (as on all SPARCs). We find all the possible targets of the
219 coming instruction and breakpoint them.
221 single_step is also called just after the inferior stops. If we had
222 set up a simulated single-step, we undo our damage. */
225 sparc_software_single_step (enum target_signal ignore
, /* pid, but we don't need it */
226 int insert_breakpoints_p
)
232 if (insert_breakpoints_p
)
234 /* Always set breakpoint for NPC. */
235 next_pc
= read_register (NPC_REGNUM
);
236 npc4
= next_pc
+ 4; /* branch not taken */
238 target_insert_breakpoint (next_pc
, break_mem
[0]);
239 /* printf_unfiltered ("set break at %x\n",next_pc); */
241 pc
= read_register (PC_REGNUM
);
242 pc_instruction
= fetch_instruction (pc
);
243 br
= isbranch (pc_instruction
, pc
, &target
);
244 brknpc4
= brktrg
= 0;
248 /* Conditional annulled branch will either end up at
249 npc (if taken) or at npc+4 (if not taken).
252 target_insert_breakpoint (npc4
, break_mem
[1]);
254 else if (br
== baa
&& target
!= next_pc
)
256 /* Unconditional annulled branch will always end up at
259 target_insert_breakpoint (target
, break_mem
[2]);
261 else if (GDB_TARGET_IS_SPARC64
&& br
== done_retry
)
264 target_insert_breakpoint (target
, break_mem
[2]);
269 /* Remove breakpoints */
270 target_remove_breakpoint (next_pc
, break_mem
[0]);
273 target_remove_breakpoint (npc4
, break_mem
[1]);
276 target_remove_breakpoint (target
, break_mem
[2]);
280 struct frame_extra_info
285 /* Following fields only relevant for flat frames. */
288 /* Add this to ->frame to get the value of the stack pointer at the
289 time of the register saves. */
293 /* Call this for each newly created frame. For SPARC, we need to
294 calculate the bottom of the frame, and do some extra work if the
295 prologue has been generated via the -mflat option to GCC. In
296 particular, we need to know where the previous fp and the pc have
297 been stashed, since their exact position within the frame may vary. */
300 sparc_init_extra_frame_info (int fromleaf
, struct frame_info
*fi
)
303 CORE_ADDR prologue_start
, prologue_end
;
306 frame_extra_info_zalloc (fi
, sizeof (struct frame_extra_info
));
307 frame_saved_regs_zalloc (fi
);
309 get_frame_extra_info (fi
)->bottom
=
311 ? (get_frame_base (fi
) == get_frame_base (get_next_frame (fi
))
312 ? get_frame_extra_info (get_next_frame (fi
))->bottom
313 : get_frame_base (get_next_frame (fi
)))
316 /* If fi->next is NULL, then we already set ->frame by passing
317 deprecated_read_fp() to create_new_frame. */
318 if (get_next_frame (fi
))
320 char buf
[MAX_REGISTER_SIZE
];
322 /* Compute ->frame as if not flat. If it is flat, we'll change
324 if (get_next_frame (get_next_frame (fi
)) != NULL
325 && ((get_frame_type (get_next_frame (get_next_frame (fi
))) == SIGTRAMP_FRAME
)
326 || deprecated_frame_in_dummy (get_next_frame (get_next_frame (fi
))))
327 && frameless_look_for_prologue (get_next_frame (fi
)))
329 /* A frameless function interrupted by a signal did not change
330 the frame pointer, fix up frame pointer accordingly. */
331 deprecated_update_frame_base_hack (fi
, get_frame_base (get_next_frame (fi
)));
332 get_frame_extra_info (fi
)->bottom
=
333 get_frame_extra_info (get_next_frame (fi
))->bottom
;
337 /* Should we adjust for stack bias here? */
339 frame_read_unsigned_register (fi
, DEPRECATED_FP_REGNUM
, &tmp
);
340 deprecated_update_frame_base_hack (fi
, tmp
);
341 if (GDB_TARGET_IS_SPARC64
&& (get_frame_base (fi
) & 1))
342 deprecated_update_frame_base_hack (fi
, get_frame_base (fi
) + 2047);
346 /* Decide whether this is a function with a ``flat register window''
347 frame. For such functions, the frame pointer is actually in %i7. */
348 get_frame_extra_info (fi
)->flat
= 0;
349 get_frame_extra_info (fi
)->in_prologue
= 0;
350 if (find_pc_partial_function (get_frame_pc (fi
), &name
, &prologue_start
, &prologue_end
))
352 /* See if the function starts with an add (which will be of a
353 negative number if a flat frame) to the sp. FIXME: Does not
354 handle large frames which will need more than one instruction
356 insn
= fetch_instruction (prologue_start
);
357 if (X_OP (insn
) == 2 && X_RD (insn
) == 14 && X_OP3 (insn
) == 0
358 && X_I (insn
) && X_SIMM13 (insn
) < 0)
360 int offset
= X_SIMM13 (insn
);
362 /* Then look for a save of %i7 into the frame. */
363 insn
= fetch_instruction (prologue_start
+ 4);
367 && X_RS1 (insn
) == 14)
369 char buf
[MAX_REGISTER_SIZE
];
371 /* We definitely have a flat frame now. */
372 get_frame_extra_info (fi
)->flat
= 1;
374 get_frame_extra_info (fi
)->sp_offset
= offset
;
376 /* Overwrite the frame's address with the value in %i7. */
379 frame_read_unsigned_register (fi
, I7_REGNUM
, &tmp
);
380 deprecated_update_frame_base_hack (fi
, tmp
);
383 if (GDB_TARGET_IS_SPARC64
&& (get_frame_base (fi
) & 1))
384 deprecated_update_frame_base_hack (fi
, get_frame_base (fi
) + 2047);
386 /* Record where the fp got saved. */
387 get_frame_extra_info (fi
)->fp_addr
=
388 get_frame_base (fi
) + get_frame_extra_info (fi
)->sp_offset
+ X_SIMM13 (insn
);
390 /* Also try to collect where the pc got saved to. */
391 get_frame_extra_info (fi
)->pc_addr
= 0;
392 insn
= fetch_instruction (prologue_start
+ 12);
396 && X_RS1 (insn
) == 14)
397 get_frame_extra_info (fi
)->pc_addr
=
398 get_frame_base (fi
) + get_frame_extra_info (fi
)->sp_offset
+ X_SIMM13 (insn
);
403 /* Check if the PC is in the function prologue before a SAVE
404 instruction has been executed yet. If so, set the frame
405 to the current value of the stack pointer and set
406 the in_prologue flag. */
408 struct symtab_and_line sal
;
410 sal
= find_pc_line (prologue_start
, 0);
411 if (sal
.line
== 0) /* no line info, use PC */
412 prologue_end
= get_frame_pc (fi
);
413 else if (sal
.end
< prologue_end
)
414 prologue_end
= sal
.end
;
415 if (get_frame_pc (fi
) < prologue_end
)
417 for (addr
= prologue_start
; addr
< get_frame_pc (fi
); addr
+= 4)
419 insn
= read_memory_integer (addr
, 4);
420 if (X_OP (insn
) == 2 && X_OP3 (insn
) == 0x3c)
421 break; /* SAVE seen, stop searching */
423 if (addr
>= get_frame_pc (fi
))
425 get_frame_extra_info (fi
)->in_prologue
= 1;
426 deprecated_update_frame_base_hack (fi
, read_register (SP_REGNUM
));
431 if (get_next_frame (fi
) && get_frame_base (fi
) == 0)
433 /* Kludge to cause init_prev_frame_info to destroy the new frame. */
434 deprecated_update_frame_base_hack (fi
, get_frame_base (get_next_frame (fi
)));
435 deprecated_update_frame_pc_hack (fi
, get_frame_pc (get_next_frame (fi
)));
440 sparc_frame_chain (struct frame_info
*frame
)
442 /* Value that will cause DEPRECATED_FRAME_CHAIN_VALID to not worry
443 about the chain value. If it really is zero, we detect it later
444 in sparc_init_prev_frame.
446 Note: kevinb/2003-02-18: The constant 1 used to be returned here,
447 but, after some recent changes to legacy_frame_chain_valid(),
448 this value is no longer suitable for causing
449 legacy_frame_chain_valid() to "not worry about the chain value."
450 The constant ~0 (i.e, 0xfff...) causes the failing test in
451 legacy_frame_chain_valid() to succeed thus preserving the "not
452 worry" property. I had considered using something like
453 ``get_frame_base (frame) + 1''. However, I think a constant
454 value is better, because when debugging this problem, I knew that
455 something funny was going on as soon as I saw the constant 1
456 being used as the frame chain elsewhere in GDB. */
458 return ~ (CORE_ADDR
) 0;
462 sparc_extract_struct_value_address (char *regbuf
)
464 return extract_address (regbuf
+ REGISTER_BYTE (O0_REGNUM
),
465 REGISTER_RAW_SIZE (O0_REGNUM
));
468 /* Find the pc saved in frame FRAME. */
471 sparc_frame_saved_pc (struct frame_info
*frame
)
473 char buf
[MAX_REGISTER_SIZE
];
476 if ((get_frame_type (frame
) == SIGTRAMP_FRAME
))
478 /* This is the signal trampoline frame.
479 Get the saved PC from the sigcontext structure. */
481 #ifndef SIGCONTEXT_PC_OFFSET
482 #define SIGCONTEXT_PC_OFFSET 12
485 CORE_ADDR sigcontext_addr
;
487 int saved_pc_offset
= SIGCONTEXT_PC_OFFSET
;
490 scbuf
= alloca (TARGET_PTR_BIT
/ HOST_CHAR_BIT
);
492 /* Solaris2 ucbsigvechandler passes a pointer to a sigcontext
493 as the third parameter. The offset to the saved pc is 12. */
494 find_pc_partial_function (get_frame_pc (frame
), &name
,
495 (CORE_ADDR
*) NULL
, (CORE_ADDR
*) NULL
);
496 if (name
&& STREQ (name
, "ucbsigvechandler"))
497 saved_pc_offset
= 12;
499 /* The sigcontext address is contained in register O2. */
502 frame_read_unsigned_register (frame
, O0_REGNUM
+ 2, &tmp
);
503 sigcontext_addr
= tmp
;
506 /* Don't cause a memory_error when accessing sigcontext in case the
507 stack layout has changed or the stack is corrupt. */
508 target_read_memory (sigcontext_addr
+ saved_pc_offset
,
509 scbuf
, sizeof (scbuf
));
510 return extract_address (scbuf
, sizeof (scbuf
));
512 else if (get_frame_extra_info (frame
)->in_prologue
||
513 (get_next_frame (frame
) != NULL
&&
514 ((get_frame_type (get_next_frame (frame
)) == SIGTRAMP_FRAME
) ||
515 deprecated_frame_in_dummy (get_next_frame (frame
))) &&
516 frameless_look_for_prologue (frame
)))
518 /* A frameless function interrupted by a signal did not save
519 the PC, it is still in %o7. */
521 frame_read_unsigned_register (frame
, O7_REGNUM
, &tmp
);
522 return PC_ADJUST (tmp
);
524 if (get_frame_extra_info (frame
)->flat
)
525 addr
= get_frame_extra_info (frame
)->pc_addr
;
527 addr
= get_frame_extra_info (frame
)->bottom
+ FRAME_SAVED_I0
+
528 SPARC_INTREG_SIZE
* (I7_REGNUM
- I0_REGNUM
);
531 /* A flat frame leaf function might not save the PC anywhere,
532 just leave it in %o7. */
533 return PC_ADJUST (read_register (O7_REGNUM
));
535 read_memory (addr
, buf
, SPARC_INTREG_SIZE
);
536 return PC_ADJUST (extract_address (buf
, SPARC_INTREG_SIZE
));
539 /* Since an individual frame in the frame cache is defined by two
540 arguments (a frame pointer and a stack pointer), we need two
541 arguments to get info for an arbitrary stack frame. This routine
542 takes two arguments and makes the cached frames look as if these
543 two arguments defined a frame on the cache. This allows the rest
544 of info frame to extract the important arguments without
548 setup_arbitrary_frame (int argc
, CORE_ADDR
*argv
)
550 struct frame_info
*frame
;
553 error ("Sparc frame specifications require two arguments: fp and sp");
555 frame
= create_new_frame (argv
[0], 0);
558 internal_error (__FILE__
, __LINE__
,
559 "create_new_frame returned invalid frame");
561 get_frame_extra_info (frame
)->bottom
= argv
[1];
562 deprecated_update_frame_pc_hack (frame
, DEPRECATED_FRAME_SAVED_PC (frame
));
566 /* Given a pc value, skip it forward past the function prologue by
567 disassembling instructions that appear to be a prologue.
569 If FRAMELESS_P is set, we are only testing to see if the function
570 is frameless. This allows a quicker answer.
572 This routine should be more specific in its actions; making sure
573 that it uses the same register in the initial prologue section. */
575 static CORE_ADDR
examine_prologue (CORE_ADDR
, int, struct frame_info
*,
579 examine_prologue (CORE_ADDR start_pc
, int frameless_p
, struct frame_info
*fi
,
580 CORE_ADDR
*saved_regs
)
584 CORE_ADDR pc
= start_pc
;
587 insn
= fetch_instruction (pc
);
589 /* Recognize the `sethi' insn and record its destination. */
590 if (X_OP (insn
) == 0 && X_OP2 (insn
) == 4)
594 insn
= fetch_instruction (pc
);
597 /* Recognize an add immediate value to register to either %g1 or
598 the destination register recorded above. Actually, this might
599 well recognize several different arithmetic operations.
600 It doesn't check that rs1 == rd because in theory "sub %g0, 5, %g1"
601 followed by "save %sp, %g1, %sp" is a valid prologue (Not that
602 I imagine any compiler really does that, however). */
605 && (X_RD (insn
) == 1 || X_RD (insn
) == dest
))
608 insn
= fetch_instruction (pc
);
611 /* Recognize any SAVE insn. */
612 if (X_OP (insn
) == 2 && X_OP3 (insn
) == 60)
615 if (frameless_p
) /* If the save is all we care about, */
616 return pc
; /* return before doing more work */
617 insn
= fetch_instruction (pc
);
619 /* Recognize add to %sp. */
620 else if (X_OP (insn
) == 2 && X_RD (insn
) == 14 && X_OP3 (insn
) == 0)
623 if (frameless_p
) /* If the add is all we care about, */
624 return pc
; /* return before doing more work */
626 insn
= fetch_instruction (pc
);
627 /* Recognize store of frame pointer (i7). */
631 && X_RS1 (insn
) == 14)
634 insn
= fetch_instruction (pc
);
636 /* Recognize sub %sp, <anything>, %i7. */
639 && X_RS1 (insn
) == 14
640 && X_RD (insn
) == 31)
643 insn
= fetch_instruction (pc
);
652 /* Without a save or add instruction, it's not a prologue. */
657 /* Recognize stores into the frame from the input registers.
658 This recognizes all non alternate stores of an input register,
659 into a location offset from the frame pointer between
662 /* The above will fail for arguments that are promoted
663 (eg. shorts to ints or floats to doubles), because the compiler
664 will pass them in positive-offset frame space, but the prologue
665 will save them (after conversion) in negative frame space at an
666 unpredictable offset. Therefore I am going to remove the
667 restriction on the target-address of the save, on the theory
668 that any unbroken sequence of saves from input registers must
669 be part of the prologue. In un-optimized code (at least), I'm
670 fairly sure that the compiler would emit SOME other instruction
671 (eg. a move or add) before emitting another save that is actually
672 a part of the function body.
674 Besides, the reserved stack space is different for SPARC64 anyway.
679 && (X_OP3 (insn
) & 0x3c) == 4 /* Store, non-alternate. */
680 && (X_RD (insn
) & 0x18) == 0x18 /* Input register. */
681 && X_I (insn
) /* Immediate mode. */
682 && X_RS1 (insn
) == 30) /* Off of frame pointer. */
683 ; /* empty statement -- fall thru to end of loop */
684 else if (GDB_TARGET_IS_SPARC64
686 && (X_OP3 (insn
) & 0x3c) == 12 /* store, extended (64-bit) */
687 && (X_RD (insn
) & 0x18) == 0x18 /* input register */
688 && X_I (insn
) /* immediate mode */
689 && X_RS1 (insn
) == 30) /* off of frame pointer */
690 ; /* empty statement -- fall thru to end of loop */
691 else if (X_OP (insn
) == 3
692 && (X_OP3 (insn
) & 0x3c) == 36 /* store, floating-point */
693 && X_I (insn
) /* immediate mode */
694 && X_RS1 (insn
) == 30) /* off of frame pointer */
695 ; /* empty statement -- fall thru to end of loop */
698 && X_OP3 (insn
) == 4 /* store? */
699 && X_RS1 (insn
) == 14) /* off of frame pointer */
701 if (saved_regs
&& X_I (insn
))
702 saved_regs
[X_RD (insn
)] =
703 get_frame_base (fi
) + get_frame_extra_info (fi
)->sp_offset
+ X_SIMM13 (insn
);
708 insn
= fetch_instruction (pc
);
714 /* Advance PC across any function entry prologue instructions to reach
718 sparc_skip_prologue (CORE_ADDR start_pc
)
720 struct symtab_and_line sal
;
721 CORE_ADDR func_start
, func_end
;
723 /* This is the preferred method, find the end of the prologue by
724 using the debugging information. */
725 if (find_pc_partial_function (start_pc
, NULL
, &func_start
, &func_end
))
727 sal
= find_pc_line (func_start
, 0);
729 if (sal
.end
< func_end
730 && start_pc
<= sal
.end
)
734 /* Oh well, examine the code by hand. */
735 return examine_prologue (start_pc
, 0, NULL
, NULL
);
738 /* Is the prologue at IP frameless? */
741 sparc_prologue_frameless_p (CORE_ADDR ip
)
743 return ip
== examine_prologue (ip
, 1, NULL
, NULL
);
746 /* Check instruction at ADDR to see if it is a branch.
747 All non-annulled instructions will go to NPC or will trap.
748 Set *TARGET if we find a candidate branch; set to zero if not.
750 This isn't static as it's used by remote-sa.sparc.c. */
753 isbranch (long instruction
, CORE_ADDR addr
, CORE_ADDR
*target
)
755 branch_type val
= not_branch
;
756 long int offset
= 0; /* Must be signed for sign-extend. */
760 if (X_OP (instruction
) == 0
761 && (X_OP2 (instruction
) == 2
762 || X_OP2 (instruction
) == 6
763 || X_OP2 (instruction
) == 1
764 || X_OP2 (instruction
) == 3
765 || X_OP2 (instruction
) == 5
766 || (GDB_TARGET_IS_SPARC64
&& X_OP2 (instruction
) == 7)))
768 if (X_COND (instruction
) == 8)
769 val
= X_A (instruction
) ? baa
: ba
;
771 val
= X_A (instruction
) ? bicca
: bicc
;
772 switch (X_OP2 (instruction
))
775 if (!GDB_TARGET_IS_SPARC64
)
780 offset
= 4 * X_DISP22 (instruction
);
784 offset
= 4 * X_DISP19 (instruction
);
787 offset
= 4 * X_DISP16 (instruction
);
790 *target
= addr
+ offset
;
792 else if (GDB_TARGET_IS_SPARC64
793 && X_OP (instruction
) == 2
794 && X_OP3 (instruction
) == 62)
796 if (X_FCN (instruction
) == 0)
799 *target
= read_register (TNPC_REGNUM
);
802 else if (X_FCN (instruction
) == 1)
805 *target
= read_register (TPC_REGNUM
);
813 /* Find register number REGNUM relative to FRAME and put its
814 (raw) contents in *RAW_BUFFER. Set *OPTIMIZED if the variable
815 was optimized out (and thus can't be fetched). If the variable
816 was fetched from memory, set *ADDRP to where it was fetched from,
817 otherwise it was fetched from a register.
819 The argument RAW_BUFFER must point to aligned memory. */
822 sparc_get_saved_register (char *raw_buffer
, int *optimized
, CORE_ADDR
*addrp
,
823 struct frame_info
*frame
, int regnum
,
824 enum lval_type
*lval
)
826 struct frame_info
*frame1
;
829 if (!target_has_registers
)
830 error ("No registers.");
837 /* FIXME This code extracted from infcmd.c; should put elsewhere! */
840 /* error ("No selected frame."); */
841 if (!target_has_registers
)
842 error ("The program has no registers now.");
843 if (deprecated_selected_frame
== NULL
)
844 error ("No selected frame.");
845 /* Try to use selected frame */
846 frame
= get_prev_frame (deprecated_selected_frame
);
848 error ("Cmd not meaningful in the outermost frame.");
852 frame1
= get_next_frame (frame
);
854 /* Get saved PC from the frame info if not in innermost frame. */
855 if (regnum
== PC_REGNUM
&& frame1
!= NULL
)
859 if (raw_buffer
!= NULL
)
861 /* Put it back in target format. */
862 store_unsigned_integer (raw_buffer
, REGISTER_RAW_SIZE (regnum
), get_frame_pc (frame
));
869 while (frame1
!= NULL
)
871 /* FIXME MVS: wrong test for dummy frame at entry. */
873 if (get_frame_pc (frame1
) >= (get_frame_extra_info (frame1
)->bottom
874 ? get_frame_extra_info (frame1
)->bottom
876 && get_frame_pc (frame1
) <= get_frame_base (frame1
))
878 /* Dummy frame. All but the window regs are in there somewhere.
879 The window registers are saved on the stack, just like in a
881 if (regnum
>= G1_REGNUM
&& regnum
< G1_REGNUM
+ 7)
882 addr
= get_frame_base (frame1
) + (regnum
- G0_REGNUM
) * SPARC_INTREG_SIZE
883 - (FP_REGISTER_BYTES
+ 8 * SPARC_INTREG_SIZE
);
884 else if (regnum
>= I0_REGNUM
&& regnum
< I0_REGNUM
+ 8)
885 /* NOTE: cagney/2002-05-04: The call to get_prev_frame()
886 is safe/cheap - there will always be a prev frame.
887 This is because frame1 is initialized to frame->next
888 (frame1->prev == frame) and is then advanced towards
889 the innermost (next) frame. */
890 addr
= (get_frame_extra_info (get_prev_frame (frame1
))->bottom
891 + (regnum
- I0_REGNUM
) * SPARC_INTREG_SIZE
893 else if (regnum
>= L0_REGNUM
&& regnum
< L0_REGNUM
+ 8)
894 /* NOTE: cagney/2002-05-04: The call to get_prev_frame()
895 is safe/cheap - there will always be a prev frame.
896 This is because frame1 is initialized to frame->next
897 (frame1->prev == frame) and is then advanced towards
898 the innermost (next) frame. */
899 addr
= (get_frame_extra_info (get_prev_frame (frame1
))->bottom
900 + (regnum
- L0_REGNUM
) * SPARC_INTREG_SIZE
902 else if (regnum
>= O0_REGNUM
&& regnum
< O0_REGNUM
+ 8)
903 addr
= get_frame_base (frame1
) + (regnum
- O0_REGNUM
) * SPARC_INTREG_SIZE
904 - (FP_REGISTER_BYTES
+ 16 * SPARC_INTREG_SIZE
);
905 else if (SPARC_HAS_FPU
&&
906 regnum
>= FP0_REGNUM
&& regnum
< FP0_REGNUM
+ 32)
907 addr
= get_frame_base (frame1
) + (regnum
- FP0_REGNUM
) * 4
908 - (FP_REGISTER_BYTES
);
909 else if (GDB_TARGET_IS_SPARC64
&& SPARC_HAS_FPU
&&
910 regnum
>= FP0_REGNUM
+ 32 && regnum
< FP_MAX_REGNUM
)
911 addr
= get_frame_base (frame1
) + 32 * 4 + (regnum
- FP0_REGNUM
- 32) * 8
912 - (FP_REGISTER_BYTES
);
913 else if (regnum
>= Y_REGNUM
&& regnum
< NUM_REGS
)
914 addr
= get_frame_base (frame1
) + (regnum
- Y_REGNUM
) * SPARC_INTREG_SIZE
915 - (FP_REGISTER_BYTES
+ 24 * SPARC_INTREG_SIZE
);
917 else if (get_frame_extra_info (frame1
)->flat
)
920 if (regnum
== RP_REGNUM
)
921 addr
= get_frame_extra_info (frame1
)->pc_addr
;
922 else if (regnum
== I7_REGNUM
)
923 addr
= get_frame_extra_info (frame1
)->fp_addr
;
926 CORE_ADDR func_start
;
929 regs
= alloca (NUM_REGS
* sizeof (CORE_ADDR
));
930 memset (regs
, 0, NUM_REGS
* sizeof (CORE_ADDR
));
932 find_pc_partial_function (get_frame_pc (frame1
), NULL
, &func_start
, NULL
);
933 examine_prologue (func_start
, 0, frame1
, regs
);
939 /* Normal frame. Local and In registers are saved on stack. */
940 if (regnum
>= I0_REGNUM
&& regnum
< I0_REGNUM
+ 8)
941 addr
= (get_frame_extra_info (get_prev_frame (frame1
))->bottom
942 + (regnum
- I0_REGNUM
) * SPARC_INTREG_SIZE
944 else if (regnum
>= L0_REGNUM
&& regnum
< L0_REGNUM
+ 8)
945 addr
= (get_frame_extra_info (get_prev_frame (frame1
))->bottom
946 + (regnum
- L0_REGNUM
) * SPARC_INTREG_SIZE
948 else if (regnum
>= O0_REGNUM
&& regnum
< O0_REGNUM
+ 8)
950 /* Outs become ins. */
952 frame_register (frame1
, (regnum
- O0_REGNUM
+ I0_REGNUM
),
953 optimized
, lval
, addrp
, &realnum
, raw_buffer
);
959 frame1
= get_next_frame (frame1
);
965 if (regnum
== SP_REGNUM
)
967 if (raw_buffer
!= NULL
)
969 /* Put it back in target format. */
970 store_unsigned_integer (raw_buffer
, REGISTER_RAW_SIZE (regnum
), addr
);
976 if (raw_buffer
!= NULL
)
977 read_memory (addr
, raw_buffer
, REGISTER_RAW_SIZE (regnum
));
982 *lval
= lval_register
;
983 addr
= REGISTER_BYTE (regnum
);
984 if (raw_buffer
!= NULL
)
985 deprecated_read_register_gen (regnum
, raw_buffer
);
991 /* Push an empty stack frame, and record in it the current PC, regs, etc.
993 We save the non-windowed registers and the ins. The locals and outs
994 are new; they don't need to be saved. The i's and l's of
995 the last frame were already saved on the stack. */
997 /* Definitely see tm-sparc.h for more doc of the frame format here. */
999 /* See tm-sparc.h for how this is calculated. */
1001 #define DUMMY_STACK_REG_BUF_SIZE \
1002 (((8+8+8) * SPARC_INTREG_SIZE) + FP_REGISTER_BYTES)
1003 #define DUMMY_STACK_SIZE \
1004 (DUMMY_STACK_REG_BUF_SIZE + DUMMY_REG_SAVE_OFFSET)
1007 sparc_push_dummy_frame (void)
1009 CORE_ADDR sp
, old_sp
;
1010 char *register_temp
;
1012 register_temp
= alloca (DUMMY_STACK_SIZE
);
1014 old_sp
= sp
= read_sp ();
1016 if (GDB_TARGET_IS_SPARC64
)
1018 /* PC, NPC, CCR, FSR, FPRS, Y, ASI */
1019 deprecated_read_register_bytes (REGISTER_BYTE (PC_REGNUM
),
1021 REGISTER_RAW_SIZE (PC_REGNUM
) * 7);
1022 deprecated_read_register_bytes (REGISTER_BYTE (PSTATE_REGNUM
),
1023 ®ister_temp
[7 * SPARC_INTREG_SIZE
],
1024 REGISTER_RAW_SIZE (PSTATE_REGNUM
));
1025 /* FIXME: not sure what needs to be saved here. */
1029 /* Y, PS, WIM, TBR, PC, NPC, FPS, CPS regs */
1030 deprecated_read_register_bytes (REGISTER_BYTE (Y_REGNUM
),
1032 REGISTER_RAW_SIZE (Y_REGNUM
) * 8);
1035 deprecated_read_register_bytes (REGISTER_BYTE (O0_REGNUM
),
1036 ®ister_temp
[8 * SPARC_INTREG_SIZE
],
1037 SPARC_INTREG_SIZE
* 8);
1039 deprecated_read_register_bytes (REGISTER_BYTE (G0_REGNUM
),
1040 ®ister_temp
[16 * SPARC_INTREG_SIZE
],
1041 SPARC_INTREG_SIZE
* 8);
1044 deprecated_read_register_bytes (REGISTER_BYTE (FP0_REGNUM
),
1045 ®ister_temp
[24 * SPARC_INTREG_SIZE
],
1048 sp
-= DUMMY_STACK_SIZE
;
1050 DEPRECATED_DUMMY_WRITE_SP (sp
);
1052 write_memory (sp
+ DUMMY_REG_SAVE_OFFSET
, ®ister_temp
[0],
1053 DUMMY_STACK_REG_BUF_SIZE
);
1055 if (strcmp (target_shortname
, "sim") != 0)
1057 /* NOTE: cagney/2002-04-04: The code below originally contained
1058 GDB's _only_ call to write_fp(). That call was eliminated by
1059 inlining the corresponding code. For the 64 bit case, the
1060 old function (sparc64_write_fp) did the below although I'm
1061 not clear why. The same goes for why this is only done when
1062 the underlying target is a simulator. */
1063 if (GDB_TARGET_IS_SPARC64
)
1065 /* Target is a 64 bit SPARC. */
1066 CORE_ADDR oldfp
= read_register (DEPRECATED_FP_REGNUM
);
1068 write_register (DEPRECATED_FP_REGNUM
, old_sp
- 2047);
1070 write_register (DEPRECATED_FP_REGNUM
, old_sp
);
1074 /* Target is a 32 bit SPARC. */
1075 write_register (DEPRECATED_FP_REGNUM
, old_sp
);
1077 /* Set return address register for the call dummy to the current PC. */
1078 write_register (I7_REGNUM
, read_pc () - 8);
1082 /* The call dummy will write this value to FP before executing
1083 the 'save'. This ensures that register window flushes work
1084 correctly in the simulator. */
1085 write_register (G0_REGNUM
+ 1, read_register (DEPRECATED_FP_REGNUM
));
1087 /* The call dummy will write this value to FP after executing
1089 write_register (G0_REGNUM
+ 2, old_sp
);
1091 /* The call dummy will write this value to the return address (%i7) after
1092 executing the 'save'. */
1093 write_register (G0_REGNUM
+ 3, read_pc () - 8);
1095 /* Set the FP that the call dummy will be using after the 'save'.
1096 This makes backtraces from an inferior function call work properly. */
1097 write_register (DEPRECATED_FP_REGNUM
, old_sp
);
1101 /* sparc_frame_find_saved_regs (). This function is here only because
1102 pop_frame uses it. Note there is an interesting corner case which
1103 I think few ports of GDB get right--if you are popping a frame
1104 which does not save some register that *is* saved by a more inner
1105 frame (such a frame will never be a dummy frame because dummy
1106 frames save all registers).
1108 NOTE: cagney/2003-03-12: Since pop_frame has been rewritten to use
1109 frame_unwind_register() the need for this function is questionable.
1111 Stores, into an array of CORE_ADDR,
1112 the addresses of the saved registers of frame described by FRAME_INFO.
1113 This includes special registers such as pc and fp saved in special
1114 ways in the stack frame. sp is even more special:
1115 the address we return for it IS the sp for the next frame.
1117 Note that on register window machines, we are currently making the
1118 assumption that window registers are being saved somewhere in the
1119 frame in which they are being used. If they are stored in an
1120 inferior frame, find_saved_register will break.
1122 On the Sun 4, the only time all registers are saved is when
1123 a dummy frame is involved. Otherwise, the only saved registers
1124 are the LOCAL and IN registers which are saved as a result
1125 of the "save/restore" opcodes. This condition is determined
1126 by address rather than by value.
1128 The "pc" is not stored in a frame on the SPARC. (What is stored
1129 is a return address minus 8.) sparc_pop_frame knows how to
1130 deal with that. Other routines might or might not.
1132 See tm-sparc.h (PUSH_DUMMY_FRAME and friends) for CRITICAL information
1133 about how this works. */
1135 static void sparc_frame_find_saved_regs (struct frame_info
*, CORE_ADDR
*);
1138 sparc_frame_find_saved_regs (struct frame_info
*fi
, CORE_ADDR
*saved_regs_addr
)
1140 register int regnum
;
1141 CORE_ADDR frame_addr
= get_frame_base (fi
);
1143 gdb_assert (fi
!= NULL
);
1145 memset (saved_regs_addr
, 0, NUM_REGS
* sizeof (CORE_ADDR
));
1147 if (get_frame_pc (fi
) >= (get_frame_extra_info (fi
)->bottom
1148 ? get_frame_extra_info (fi
)->bottom
1150 && get_frame_pc (fi
) <= get_frame_base (fi
))
1152 /* Dummy frame. All but the window regs are in there somewhere. */
1153 for (regnum
= G1_REGNUM
; regnum
< G1_REGNUM
+ 7; regnum
++)
1154 saved_regs_addr
[regnum
] =
1155 frame_addr
+ (regnum
- G0_REGNUM
) * SPARC_INTREG_SIZE
1156 - DUMMY_STACK_REG_BUF_SIZE
+ 16 * SPARC_INTREG_SIZE
;
1158 for (regnum
= I0_REGNUM
; regnum
< I0_REGNUM
+ 8; regnum
++)
1159 saved_regs_addr
[regnum
] =
1160 frame_addr
+ (regnum
- I0_REGNUM
) * SPARC_INTREG_SIZE
1161 - DUMMY_STACK_REG_BUF_SIZE
+ 8 * SPARC_INTREG_SIZE
;
1164 for (regnum
= FP0_REGNUM
; regnum
< FP_MAX_REGNUM
; regnum
++)
1165 saved_regs_addr
[regnum
] = frame_addr
+ (regnum
- FP0_REGNUM
) * 4
1166 - DUMMY_STACK_REG_BUF_SIZE
+ 24 * SPARC_INTREG_SIZE
;
1168 if (GDB_TARGET_IS_SPARC64
)
1170 for (regnum
= PC_REGNUM
; regnum
< PC_REGNUM
+ 7; regnum
++)
1172 saved_regs_addr
[regnum
] =
1173 frame_addr
+ (regnum
- PC_REGNUM
) * SPARC_INTREG_SIZE
1174 - DUMMY_STACK_REG_BUF_SIZE
;
1176 saved_regs_addr
[PSTATE_REGNUM
] =
1177 frame_addr
+ 8 * SPARC_INTREG_SIZE
- DUMMY_STACK_REG_BUF_SIZE
;
1180 for (regnum
= Y_REGNUM
; regnum
< NUM_REGS
; regnum
++)
1181 saved_regs_addr
[regnum
] =
1182 frame_addr
+ (regnum
- Y_REGNUM
) * SPARC_INTREG_SIZE
1183 - DUMMY_STACK_REG_BUF_SIZE
;
1185 frame_addr
= (get_frame_extra_info (fi
)->bottom
1186 ? get_frame_extra_info (fi
)->bottom
1189 else if (get_frame_extra_info (fi
)->flat
)
1191 CORE_ADDR func_start
;
1192 find_pc_partial_function (get_frame_pc (fi
), NULL
, &func_start
, NULL
);
1193 examine_prologue (func_start
, 0, fi
, saved_regs_addr
);
1195 /* Flat register window frame. */
1196 saved_regs_addr
[RP_REGNUM
] = get_frame_extra_info (fi
)->pc_addr
;
1197 saved_regs_addr
[I7_REGNUM
] = get_frame_extra_info (fi
)->fp_addr
;
1201 /* Normal frame. Just Local and In registers */
1202 frame_addr
= (get_frame_extra_info (fi
)->bottom
1203 ? get_frame_extra_info (fi
)->bottom
1205 for (regnum
= L0_REGNUM
; regnum
< L0_REGNUM
+ 8; regnum
++)
1206 saved_regs_addr
[regnum
] =
1207 (frame_addr
+ (regnum
- L0_REGNUM
) * SPARC_INTREG_SIZE
1209 for (regnum
= I0_REGNUM
; regnum
< I0_REGNUM
+ 8; regnum
++)
1210 saved_regs_addr
[regnum
] =
1211 (frame_addr
+ (regnum
- I0_REGNUM
) * SPARC_INTREG_SIZE
1214 if (get_next_frame (fi
))
1216 if (get_frame_extra_info (fi
)->flat
)
1218 saved_regs_addr
[O7_REGNUM
] = get_frame_extra_info (fi
)->pc_addr
;
1222 /* Pull off either the next frame pointer or the stack pointer */
1223 CORE_ADDR next_next_frame_addr
=
1224 (get_frame_extra_info (get_next_frame (fi
))->bottom
1225 ? get_frame_extra_info (get_next_frame (fi
))->bottom
1227 for (regnum
= O0_REGNUM
; regnum
< O0_REGNUM
+ 8; regnum
++)
1228 saved_regs_addr
[regnum
] =
1229 (next_next_frame_addr
1230 + (regnum
- O0_REGNUM
) * SPARC_INTREG_SIZE
1234 /* Otherwise, whatever we would get from ptrace(GETREGS) is accurate */
1235 /* FIXME -- should this adjust for the sparc64 offset? */
1236 saved_regs_addr
[SP_REGNUM
] = get_frame_base (fi
);
1239 /* Discard from the stack the innermost frame, restoring all saved registers.
1241 Note that the values stored in fsr by
1242 deprecated_get_frame_saved_regs are *in the context of the called
1243 frame*. What this means is that the i regs of fsr must be restored
1244 into the o regs of the (calling) frame that we pop into. We don't
1245 care about the output regs of the calling frame, since unless it's
1246 a dummy frame, it won't have any output regs in it.
1248 We never have to bother with %l (local) regs, since the called routine's
1249 locals get tossed, and the calling routine's locals are already saved
1252 /* Definitely see tm-sparc.h for more doc of the frame format here. */
1255 sparc_pop_frame (void)
1257 register struct frame_info
*frame
= get_current_frame ();
1258 register CORE_ADDR pc
;
1263 fsr
= alloca (NUM_REGS
* sizeof (CORE_ADDR
));
1264 raw_buffer
= alloca (REGISTER_BYTES
);
1265 sparc_frame_find_saved_regs (frame
, &fsr
[0]);
1268 if (fsr
[FP0_REGNUM
])
1270 read_memory (fsr
[FP0_REGNUM
], raw_buffer
, FP_REGISTER_BYTES
);
1271 deprecated_write_register_bytes (REGISTER_BYTE (FP0_REGNUM
),
1272 raw_buffer
, FP_REGISTER_BYTES
);
1274 if (!(GDB_TARGET_IS_SPARC64
))
1276 if (fsr
[FPS_REGNUM
])
1278 read_memory (fsr
[FPS_REGNUM
], raw_buffer
, SPARC_INTREG_SIZE
);
1279 deprecated_write_register_gen (FPS_REGNUM
, raw_buffer
);
1281 if (fsr
[CPS_REGNUM
])
1283 read_memory (fsr
[CPS_REGNUM
], raw_buffer
, SPARC_INTREG_SIZE
);
1284 deprecated_write_register_gen (CPS_REGNUM
, raw_buffer
);
1290 read_memory (fsr
[G1_REGNUM
], raw_buffer
, 7 * SPARC_INTREG_SIZE
);
1291 deprecated_write_register_bytes (REGISTER_BYTE (G1_REGNUM
), raw_buffer
,
1292 7 * SPARC_INTREG_SIZE
);
1295 if (get_frame_extra_info (frame
)->flat
)
1297 /* Each register might or might not have been saved, need to test
1299 for (regnum
= L0_REGNUM
; regnum
< L0_REGNUM
+ 8; ++regnum
)
1301 write_register (regnum
, read_memory_integer (fsr
[regnum
],
1302 SPARC_INTREG_SIZE
));
1303 for (regnum
= I0_REGNUM
; regnum
< I0_REGNUM
+ 8; ++regnum
)
1305 write_register (regnum
, read_memory_integer (fsr
[regnum
],
1306 SPARC_INTREG_SIZE
));
1308 /* Handle all outs except stack pointer (o0-o5; o7). */
1309 for (regnum
= O0_REGNUM
; regnum
< O0_REGNUM
+ 6; ++regnum
)
1311 write_register (regnum
, read_memory_integer (fsr
[regnum
],
1312 SPARC_INTREG_SIZE
));
1313 if (fsr
[O0_REGNUM
+ 7])
1314 write_register (O0_REGNUM
+ 7,
1315 read_memory_integer (fsr
[O0_REGNUM
+ 7],
1316 SPARC_INTREG_SIZE
));
1318 DEPRECATED_DUMMY_WRITE_SP (get_frame_base (frame
));
1320 else if (fsr
[I0_REGNUM
])
1326 reg_temp
= alloca (SPARC_INTREG_SIZE
* 16);
1328 read_memory (fsr
[I0_REGNUM
], raw_buffer
, 8 * SPARC_INTREG_SIZE
);
1330 /* Get the ins and locals which we are about to restore. Just
1331 moving the stack pointer is all that is really needed, except
1332 store_inferior_registers is then going to write the ins and
1333 locals from the registers array, so we need to muck with the
1335 sp
= fsr
[SP_REGNUM
];
1337 if (GDB_TARGET_IS_SPARC64
&& (sp
& 1))
1340 read_memory (sp
, reg_temp
, SPARC_INTREG_SIZE
* 16);
1342 /* Restore the out registers.
1343 Among other things this writes the new stack pointer. */
1344 deprecated_write_register_bytes (REGISTER_BYTE (O0_REGNUM
), raw_buffer
,
1345 SPARC_INTREG_SIZE
* 8);
1347 deprecated_write_register_bytes (REGISTER_BYTE (L0_REGNUM
), reg_temp
,
1348 SPARC_INTREG_SIZE
* 16);
1351 if (!(GDB_TARGET_IS_SPARC64
))
1353 write_register (PS_REGNUM
,
1354 read_memory_integer (fsr
[PS_REGNUM
],
1355 REGISTER_RAW_SIZE (PS_REGNUM
)));
1358 write_register (Y_REGNUM
,
1359 read_memory_integer (fsr
[Y_REGNUM
],
1360 REGISTER_RAW_SIZE (Y_REGNUM
)));
1363 /* Explicitly specified PC (and maybe NPC) -- just restore them. */
1364 write_register (PC_REGNUM
,
1365 read_memory_integer (fsr
[PC_REGNUM
],
1366 REGISTER_RAW_SIZE (PC_REGNUM
)));
1367 if (fsr
[NPC_REGNUM
])
1368 write_register (NPC_REGNUM
,
1369 read_memory_integer (fsr
[NPC_REGNUM
],
1370 REGISTER_RAW_SIZE (NPC_REGNUM
)));
1372 else if (get_frame_extra_info (frame
)->flat
)
1374 if (get_frame_extra_info (frame
)->pc_addr
)
1375 pc
= PC_ADJUST ((CORE_ADDR
)
1376 read_memory_integer (get_frame_extra_info (frame
)->pc_addr
,
1377 REGISTER_RAW_SIZE (PC_REGNUM
)));
1380 /* I think this happens only in the innermost frame, if so then
1381 it is a complicated way of saying
1382 "pc = read_register (O7_REGNUM);". */
1384 frame_read_unsigned_register (frame
, O7_REGNUM
, &tmp
);
1385 pc
= PC_ADJUST (tmp
);
1388 write_register (PC_REGNUM
, pc
);
1389 write_register (NPC_REGNUM
, pc
+ 4);
1391 else if (fsr
[I7_REGNUM
])
1393 /* Return address in %i7 -- adjust it, then restore PC and NPC from it */
1394 pc
= PC_ADJUST ((CORE_ADDR
) read_memory_integer (fsr
[I7_REGNUM
],
1395 SPARC_INTREG_SIZE
));
1396 write_register (PC_REGNUM
, pc
);
1397 write_register (NPC_REGNUM
, pc
+ 4);
1399 flush_cached_frames ();
1402 /* On the Sun 4 under SunOS, the compile will leave a fake insn which
1403 encodes the structure size being returned. If we detect such
1404 a fake insn, step past it. */
1407 sparc_pc_adjust (CORE_ADDR pc
)
1413 err
= target_read_memory (pc
+ 8, buf
, 4);
1414 insn
= extract_unsigned_integer (buf
, 4);
1415 if ((err
== 0) && (insn
& 0xffc00000) == 0)
1421 /* If pc is in a shared library trampoline, return its target.
1422 The SunOs 4.x linker rewrites the jump table entries for PIC
1423 compiled modules in the main executable to bypass the dynamic linker
1424 with jumps of the form
1427 and removes the corresponding jump table relocation entry in the
1428 dynamic relocations.
1429 find_solib_trampoline_target relies on the presence of the jump
1430 table relocation entry, so we have to detect these jump instructions
1434 sunos4_skip_trampoline_code (CORE_ADDR pc
)
1436 unsigned long insn1
;
1440 err
= target_read_memory (pc
, buf
, 4);
1441 insn1
= extract_unsigned_integer (buf
, 4);
1442 if (err
== 0 && (insn1
& 0xffc00000) == 0x03000000)
1444 unsigned long insn2
;
1446 err
= target_read_memory (pc
+ 4, buf
, 4);
1447 insn2
= extract_unsigned_integer (buf
, 4);
1448 if (err
== 0 && (insn2
& 0xffffe000) == 0x81c06000)
1450 CORE_ADDR target_pc
= (insn1
& 0x3fffff) << 10;
1451 int delta
= insn2
& 0x1fff;
1453 /* Sign extend the displacement. */
1456 return target_pc
+ delta
;
1459 return find_solib_trampoline_target (pc
);
1462 #ifdef USE_PROC_FS /* Target dependent support for /proc */
1464 /* The /proc interface divides the target machine's register set up into
1465 two different sets, the general register set (gregset) and the floating
1466 point register set (fpregset). For each set, there is an ioctl to get
1467 the current register set and another ioctl to set the current values.
1469 The actual structure passed through the ioctl interface is, of course,
1470 naturally machine dependent, and is different for each set of registers.
1471 For the sparc for example, the general register set is typically defined
1474 typedef int gregset_t[38];
1480 and the floating point set by:
1482 typedef struct prfpregset {
1485 double pr_dregs[16];
1490 u_char pr_q_entrysize;
1495 These routines provide the packing and unpacking of gregset_t and
1496 fpregset_t formatted data.
1501 /* Given a pointer to a general register set in /proc format (gregset_t *),
1502 unpack the register contents and supply them as gdb's idea of the current
1506 supply_gregset (gdb_gregset_t
*gregsetp
)
1508 prgreg_t
*regp
= (prgreg_t
*) gregsetp
;
1509 int regi
, offset
= 0;
1511 /* If the host is 64-bit sparc, but the target is 32-bit sparc,
1512 then the gregset may contain 64-bit ints while supply_register
1513 is expecting 32-bit ints. Compensate. */
1514 if (sizeof (regp
[0]) == 8 && SPARC_INTREG_SIZE
== 4)
1517 /* GDB register numbers for Gn, On, Ln, In all match /proc reg numbers. */
1518 /* FIXME MVS: assumes the order of the first 32 elements... */
1519 for (regi
= G0_REGNUM
; regi
<= I7_REGNUM
; regi
++)
1521 supply_register (regi
, ((char *) (regp
+ regi
)) + offset
);
1524 /* These require a bit more care. */
1525 supply_register (PC_REGNUM
, ((char *) (regp
+ R_PC
)) + offset
);
1526 supply_register (NPC_REGNUM
, ((char *) (regp
+ R_nPC
)) + offset
);
1527 supply_register (Y_REGNUM
, ((char *) (regp
+ R_Y
)) + offset
);
1529 if (GDB_TARGET_IS_SPARC64
)
1532 supply_register (CCR_REGNUM
, ((char *) (regp
+ R_CCR
)) + offset
);
1534 supply_register (CCR_REGNUM
, NULL
);
1537 supply_register (FPRS_REGNUM
, ((char *) (regp
+ R_FPRS
)) + offset
);
1539 supply_register (FPRS_REGNUM
, NULL
);
1542 supply_register (ASI_REGNUM
, ((char *) (regp
+ R_ASI
)) + offset
);
1544 supply_register (ASI_REGNUM
, NULL
);
1550 supply_register (PS_REGNUM
, ((char *) (regp
+ R_PS
)) + offset
);
1552 supply_register (PS_REGNUM
, NULL
);
1555 /* For 64-bit hosts, R_WIM and R_TBR may not be defined.
1556 Steal R_ASI and R_FPRS, and hope for the best! */
1558 #if !defined (R_WIM) && defined (R_ASI)
1562 #if !defined (R_TBR) && defined (R_FPRS)
1563 #define R_TBR R_FPRS
1567 supply_register (WIM_REGNUM
, ((char *) (regp
+ R_WIM
)) + offset
);
1569 supply_register (WIM_REGNUM
, NULL
);
1573 supply_register (TBR_REGNUM
, ((char *) (regp
+ R_TBR
)) + offset
);
1575 supply_register (TBR_REGNUM
, NULL
);
1579 /* Fill inaccessible registers with zero. */
1580 if (GDB_TARGET_IS_SPARC64
)
1583 * don't know how to get value of any of the following:
1585 supply_register (VER_REGNUM
, NULL
);
1586 supply_register (TICK_REGNUM
, NULL
);
1587 supply_register (PIL_REGNUM
, NULL
);
1588 supply_register (PSTATE_REGNUM
, NULL
);
1589 supply_register (TSTATE_REGNUM
, NULL
);
1590 supply_register (TBA_REGNUM
, NULL
);
1591 supply_register (TL_REGNUM
, NULL
);
1592 supply_register (TT_REGNUM
, NULL
);
1593 supply_register (TPC_REGNUM
, NULL
);
1594 supply_register (TNPC_REGNUM
, NULL
);
1595 supply_register (WSTATE_REGNUM
, NULL
);
1596 supply_register (CWP_REGNUM
, NULL
);
1597 supply_register (CANSAVE_REGNUM
, NULL
);
1598 supply_register (CANRESTORE_REGNUM
, NULL
);
1599 supply_register (CLEANWIN_REGNUM
, NULL
);
1600 supply_register (OTHERWIN_REGNUM
, NULL
);
1601 supply_register (ASR16_REGNUM
, NULL
);
1602 supply_register (ASR17_REGNUM
, NULL
);
1603 supply_register (ASR18_REGNUM
, NULL
);
1604 supply_register (ASR19_REGNUM
, NULL
);
1605 supply_register (ASR20_REGNUM
, NULL
);
1606 supply_register (ASR21_REGNUM
, NULL
);
1607 supply_register (ASR22_REGNUM
, NULL
);
1608 supply_register (ASR23_REGNUM
, NULL
);
1609 supply_register (ASR24_REGNUM
, NULL
);
1610 supply_register (ASR25_REGNUM
, NULL
);
1611 supply_register (ASR26_REGNUM
, NULL
);
1612 supply_register (ASR27_REGNUM
, NULL
);
1613 supply_register (ASR28_REGNUM
, NULL
);
1614 supply_register (ASR29_REGNUM
, NULL
);
1615 supply_register (ASR30_REGNUM
, NULL
);
1616 supply_register (ASR31_REGNUM
, NULL
);
1617 supply_register (ICC_REGNUM
, NULL
);
1618 supply_register (XCC_REGNUM
, NULL
);
1622 supply_register (CPS_REGNUM
, NULL
);
1627 fill_gregset (gdb_gregset_t
*gregsetp
, int regno
)
1629 prgreg_t
*regp
= (prgreg_t
*) gregsetp
;
1630 int regi
, offset
= 0;
1632 /* If the host is 64-bit sparc, but the target is 32-bit sparc,
1633 then the gregset may contain 64-bit ints while supply_register
1634 is expecting 32-bit ints. Compensate. */
1635 if (sizeof (regp
[0]) == 8 && SPARC_INTREG_SIZE
== 4)
1638 for (regi
= 0; regi
<= R_I7
; regi
++)
1639 if ((regno
== -1) || (regno
== regi
))
1640 deprecated_read_register_gen (regi
, (char *) (regp
+ regi
) + offset
);
1642 if ((regno
== -1) || (regno
== PC_REGNUM
))
1643 deprecated_read_register_gen (PC_REGNUM
, (char *) (regp
+ R_PC
) + offset
);
1645 if ((regno
== -1) || (regno
== NPC_REGNUM
))
1646 deprecated_read_register_gen (NPC_REGNUM
, (char *) (regp
+ R_nPC
) + offset
);
1648 if ((regno
== -1) || (regno
== Y_REGNUM
))
1649 deprecated_read_register_gen (Y_REGNUM
, (char *) (regp
+ R_Y
) + offset
);
1651 if (GDB_TARGET_IS_SPARC64
)
1654 if (regno
== -1 || regno
== CCR_REGNUM
)
1655 deprecated_read_register_gen (CCR_REGNUM
, ((char *) (regp
+ R_CCR
)) + offset
);
1658 if (regno
== -1 || regno
== FPRS_REGNUM
)
1659 deprecated_read_register_gen (FPRS_REGNUM
, ((char *) (regp
+ R_FPRS
)) + offset
);
1662 if (regno
== -1 || regno
== ASI_REGNUM
)
1663 deprecated_read_register_gen (ASI_REGNUM
, ((char *) (regp
+ R_ASI
)) + offset
);
1669 if (regno
== -1 || regno
== PS_REGNUM
)
1670 deprecated_read_register_gen (PS_REGNUM
, ((char *) (regp
+ R_PS
)) + offset
);
1673 /* For 64-bit hosts, R_WIM and R_TBR may not be defined.
1674 Steal R_ASI and R_FPRS, and hope for the best! */
1676 #if !defined (R_WIM) && defined (R_ASI)
1680 #if !defined (R_TBR) && defined (R_FPRS)
1681 #define R_TBR R_FPRS
1685 if (regno
== -1 || regno
== WIM_REGNUM
)
1686 deprecated_read_register_gen (WIM_REGNUM
, ((char *) (regp
+ R_WIM
)) + offset
);
1688 if (regno
== -1 || regno
== WIM_REGNUM
)
1689 deprecated_read_register_gen (WIM_REGNUM
, NULL
);
1693 if (regno
== -1 || regno
== TBR_REGNUM
)
1694 deprecated_read_register_gen (TBR_REGNUM
, ((char *) (regp
+ R_TBR
)) + offset
);
1696 if (regno
== -1 || regno
== TBR_REGNUM
)
1697 deprecated_read_register_gen (TBR_REGNUM
, NULL
);
1702 /* Given a pointer to a floating point register set in /proc format
1703 (fpregset_t *), unpack the register contents and supply them as gdb's
1704 idea of the current floating point register values. */
1707 supply_fpregset (gdb_fpregset_t
*fpregsetp
)
1715 for (regi
= FP0_REGNUM
; regi
< FP_MAX_REGNUM
; regi
++)
1717 from
= (char *) &fpregsetp
->pr_fr
.pr_regs
[regi
- FP0_REGNUM
];
1718 supply_register (regi
, from
);
1721 if (GDB_TARGET_IS_SPARC64
)
1724 * don't know how to get value of the following.
1726 supply_register (FSR_REGNUM
, NULL
); /* zero it out for now */
1727 supply_register (FCC0_REGNUM
, NULL
);
1728 supply_register (FCC1_REGNUM
, NULL
); /* don't know how to get value */
1729 supply_register (FCC2_REGNUM
, NULL
); /* don't know how to get value */
1730 supply_register (FCC3_REGNUM
, NULL
); /* don't know how to get value */
1734 supply_register (FPS_REGNUM
, (char *) &(fpregsetp
->pr_fsr
));
1738 /* Given a pointer to a floating point register set in /proc format
1739 (fpregset_t *), update the register specified by REGNO from gdb's idea
1740 of the current floating point register set. If REGNO is -1, update
1742 /* This will probably need some changes for sparc64. */
1745 fill_fpregset (gdb_fpregset_t
*fpregsetp
, int regno
)
1754 for (regi
= FP0_REGNUM
; regi
< FP_MAX_REGNUM
; regi
++)
1756 if ((regno
== -1) || (regno
== regi
))
1758 from
= (char *) &deprecated_registers
[REGISTER_BYTE (regi
)];
1759 to
= (char *) &fpregsetp
->pr_fr
.pr_regs
[regi
- FP0_REGNUM
];
1760 memcpy (to
, from
, REGISTER_RAW_SIZE (regi
));
1764 if (!(GDB_TARGET_IS_SPARC64
)) /* FIXME: does Sparc64 have this register? */
1765 if ((regno
== -1) || (regno
== FPS_REGNUM
))
1767 from
= (char *)&deprecated_registers
[REGISTER_BYTE (FPS_REGNUM
)];
1768 to
= (char *) &fpregsetp
->pr_fsr
;
1769 memcpy (to
, from
, REGISTER_RAW_SIZE (FPS_REGNUM
));
1773 #endif /* USE_PROC_FS */
1775 /* Because of Multi-arch, GET_LONGJMP_TARGET is always defined. So test
1776 for a definition of JB_PC. */
1779 /* Figure out where the longjmp will land. We expect that we have just entered
1780 longjmp and haven't yet setup the stack frame, so the args are still in the
1781 output regs. %o0 (O0_REGNUM) points at the jmp_buf structure from which we
1782 extract the pc (JB_PC) that we will land at. The pc is copied into ADDR.
1783 This routine returns true on success */
1786 get_longjmp_target (CORE_ADDR
*pc
)
1789 #define LONGJMP_TARGET_SIZE 4
1790 char buf
[LONGJMP_TARGET_SIZE
];
1792 jb_addr
= read_register (O0_REGNUM
);
1794 if (target_read_memory (jb_addr
+ JB_PC
* JB_ELEMENT_SIZE
, buf
,
1795 LONGJMP_TARGET_SIZE
))
1798 *pc
= extract_address (buf
, LONGJMP_TARGET_SIZE
);
1802 #endif /* GET_LONGJMP_TARGET */
1804 #ifdef STATIC_TRANSFORM_NAME
1805 /* SunPRO (3.0 at least), encodes the static variables. This is not
1806 related to C++ mangling, it is done for C too. */
1809 sunpro_static_transform_name (char *name
)
1814 /* For file-local statics there will be a dollar sign, a bunch
1815 of junk (the contents of which match a string given in the
1816 N_OPT), a period and the name. For function-local statics
1817 there will be a bunch of junk (which seems to change the
1818 second character from 'A' to 'B'), a period, the name of the
1819 function, and the name. So just skip everything before the
1821 p
= strrchr (name
, '.');
1827 #endif /* STATIC_TRANSFORM_NAME */
1830 /* Utilities for printing registers.
1831 Page numbers refer to the SPARC Architecture Manual. */
1833 static void dump_ccreg (char *, int);
1836 dump_ccreg (char *reg
, int val
)
1839 printf_unfiltered ("%s:%s,%s,%s,%s", reg
,
1840 val
& 8 ? "N" : "NN",
1841 val
& 4 ? "Z" : "NZ",
1842 val
& 2 ? "O" : "NO",
1843 val
& 1 ? "C" : "NC");
1847 decode_asi (int val
)
1853 return "ASI_NUCLEUS";
1855 return "ASI_NUCLEUS_LITTLE";
1857 return "ASI_AS_IF_USER_PRIMARY";
1859 return "ASI_AS_IF_USER_SECONDARY";
1861 return "ASI_AS_IF_USER_PRIMARY_LITTLE";
1863 return "ASI_AS_IF_USER_SECONDARY_LITTLE";
1865 return "ASI_PRIMARY";
1867 return "ASI_SECONDARY";
1869 return "ASI_PRIMARY_NOFAULT";
1871 return "ASI_SECONDARY_NOFAULT";
1873 return "ASI_PRIMARY_LITTLE";
1875 return "ASI_SECONDARY_LITTLE";
1877 return "ASI_PRIMARY_NOFAULT_LITTLE";
1879 return "ASI_SECONDARY_NOFAULT_LITTLE";
1885 /* Pretty print various registers. */
1886 /* FIXME: Would be nice if this did some fancy things for 32 bit sparc. */
1889 sparc_print_register_hook (int regno
)
1893 /* Handle double/quad versions of lower 32 fp regs. */
1894 if (regno
>= FP0_REGNUM
&& regno
< FP0_REGNUM
+ 32
1895 && (regno
& 1) == 0)
1899 if (frame_register_read (deprecated_selected_frame
, regno
, value
)
1900 && frame_register_read (deprecated_selected_frame
, regno
+ 1, value
+ 4))
1902 printf_unfiltered ("\t");
1903 print_floating (value
, builtin_type_double
, gdb_stdout
);
1905 #if 0 /* FIXME: gdb doesn't handle long doubles */
1906 if ((regno
& 3) == 0)
1908 if (frame_register_read (deprecated_selected_frame
, regno
+ 2, value
+ 8)
1909 && frame_register_read (deprecated_selected_frame
, regno
+ 3, value
+ 12))
1911 printf_unfiltered ("\t");
1912 print_floating (value
, builtin_type_long_double
, gdb_stdout
);
1919 #if 0 /* FIXME: gdb doesn't handle long doubles */
1920 /* Print upper fp regs as long double if appropriate. */
1921 if (regno
>= FP0_REGNUM
+ 32 && regno
< FP_MAX_REGNUM
1922 /* We test for even numbered regs and not a multiple of 4 because
1923 the upper fp regs are recorded as doubles. */
1924 && (regno
& 1) == 0)
1928 if (frame_register_read (deprecated_selected_frame
, regno
, value
)
1929 && frame_register_read (deprecated_selected_frame
, regno
+ 1, value
+ 8))
1931 printf_unfiltered ("\t");
1932 print_floating (value
, builtin_type_long_double
, gdb_stdout
);
1938 /* FIXME: Some of these are priviledged registers.
1939 Not sure how they should be handled. */
1941 #define BITS(n, mask) ((int) (((val) >> (n)) & (mask)))
1943 val
= read_register (regno
);
1946 if (GDB_TARGET_IS_SPARC64
)
1950 printf_unfiltered ("\t");
1951 dump_ccreg ("xcc", val
>> 4);
1952 printf_unfiltered (", ");
1953 dump_ccreg ("icc", val
& 15);
1956 printf ("\tfef:%d, du:%d, dl:%d",
1957 BITS (2, 1), BITS (1, 1), BITS (0, 1));
1961 static char *fcc
[4] =
1962 {"=", "<", ">", "?"};
1963 static char *rd
[4] =
1964 {"N", "0", "+", "-"};
1965 /* Long, but I'd rather leave it as is and use a wide screen. */
1966 printf_filtered ("\t0:%s, 1:%s, 2:%s, 3:%s, rd:%s, tem:%d, ",
1967 fcc
[BITS (10, 3)], fcc
[BITS (32, 3)],
1968 fcc
[BITS (34, 3)], fcc
[BITS (36, 3)],
1969 rd
[BITS (30, 3)], BITS (23, 31));
1970 printf_filtered ("ns:%d, ver:%d, ftt:%d, qne:%d, aexc:%d, cexc:%d",
1971 BITS (22, 1), BITS (17, 7), BITS (14, 7),
1972 BITS (13, 1), BITS (5, 31), BITS (0, 31));
1977 char *asi
= decode_asi (val
);
1979 printf ("\t%s", asi
);
1983 printf ("\tmanuf:%d, impl:%d, mask:%d, maxtl:%d, maxwin:%d",
1984 BITS (48, 0xffff), BITS (32, 0xffff),
1985 BITS (24, 0xff), BITS (8, 0xff), BITS (0, 31));
1989 static char *mm
[4] =
1990 {"tso", "pso", "rso", "?"};
1991 printf_filtered ("\tcle:%d, tle:%d, mm:%s, red:%d, ",
1992 BITS (9, 1), BITS (8, 1),
1993 mm
[BITS (6, 3)], BITS (5, 1));
1994 printf_filtered ("pef:%d, am:%d, priv:%d, ie:%d, ag:%d",
1995 BITS (4, 1), BITS (3, 1), BITS (2, 1),
1996 BITS (1, 1), BITS (0, 1));
2000 /* FIXME: print all 4? */
2003 /* FIXME: print all 4? */
2006 /* FIXME: print all 4? */
2009 /* FIXME: print all 4? */
2012 printf ("\tother:%d, normal:%d", BITS (3, 7), BITS (0, 7));
2015 printf ("\t%d", BITS (0, 31));
2017 case CANSAVE_REGNUM
:
2018 printf ("\t%-2d before spill", BITS (0, 31));
2020 case CANRESTORE_REGNUM
:
2021 printf ("\t%-2d before fill", BITS (0, 31));
2023 case CLEANWIN_REGNUM
:
2024 printf ("\t%-2d before clean", BITS (0, 31));
2026 case OTHERWIN_REGNUM
:
2027 printf ("\t%d", BITS (0, 31));
2034 printf ("\ticc:%c%c%c%c, pil:%d, s:%d, ps:%d, et:%d, cwp:%d",
2035 BITS (23, 1) ? 'N' : '-', BITS (22, 1) ? 'Z' : '-',
2036 BITS (21, 1) ? 'V' : '-', BITS (20, 1) ? 'C' : '-',
2037 BITS (8, 15), BITS (7, 1), BITS (6, 1), BITS (5, 1),
2042 static char *fcc
[4] =
2043 {"=", "<", ">", "?"};
2044 static char *rd
[4] =
2045 {"N", "0", "+", "-"};
2046 /* Long, but I'd rather leave it as is and use a wide screen. */
2047 printf ("\trd:%s, tem:%d, ns:%d, ver:%d, ftt:%d, qne:%d, "
2048 "fcc:%s, aexc:%d, cexc:%d",
2049 rd
[BITS (30, 3)], BITS (23, 31), BITS (22, 1), BITS (17, 7),
2050 BITS (14, 7), BITS (13, 1), fcc
[BITS (10, 3)], BITS (5, 31),
2060 sparc_print_registers (struct gdbarch
*gdbarch
,
2061 struct ui_file
*file
,
2062 struct frame_info
*frame
,
2063 int regnum
, int print_all
,
2064 void (*print_register_hook
) (int))
2067 const int numregs
= NUM_REGS
+ NUM_PSEUDO_REGS
;
2068 char raw_buffer
[MAX_REGISTER_SIZE
];
2069 char virtual_buffer
[MAX_REGISTER_SIZE
];
2071 for (i
= 0; i
< numregs
; i
++)
2073 /* Decide between printing all regs, non-float / vector regs, or
2079 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
)
2081 if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i
)))
2091 /* If the register name is empty, it is undefined for this
2092 processor, so don't display anything. */
2093 if (REGISTER_NAME (i
) == NULL
|| *(REGISTER_NAME (i
)) == '\0')
2096 fputs_filtered (REGISTER_NAME (i
), file
);
2097 print_spaces_filtered (15 - strlen (REGISTER_NAME (i
)), file
);
2099 /* Get the data in raw format. */
2100 if (! frame_register_read (frame
, i
, raw_buffer
))
2102 fprintf_filtered (file
, "*value not available*\n");
2106 /* FIXME: cagney/2002-08-03: This code shouldn't be necessary.
2107 The function frame_register_read() should have returned the
2108 pre-cooked register so no conversion is necessary. */
2109 /* Convert raw data to virtual format if necessary. */
2110 if (REGISTER_CONVERTIBLE (i
))
2112 REGISTER_CONVERT_TO_VIRTUAL (i
, REGISTER_VIRTUAL_TYPE (i
),
2113 raw_buffer
, virtual_buffer
);
2117 memcpy (virtual_buffer
, raw_buffer
,
2118 REGISTER_VIRTUAL_SIZE (i
));
2121 /* If virtual format is floating, print it that way, and in raw
2123 if (TYPE_CODE (REGISTER_VIRTUAL_TYPE (i
)) == TYPE_CODE_FLT
)
2127 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
2128 file
, 0, 1, 0, Val_pretty_default
);
2130 fprintf_filtered (file
, "\t(raw 0x");
2131 for (j
= 0; j
< REGISTER_RAW_SIZE (i
); j
++)
2134 if (TARGET_BYTE_ORDER
== BFD_ENDIAN_BIG
)
2137 idx
= REGISTER_RAW_SIZE (i
) - 1 - j
;
2138 fprintf_filtered (file
, "%02x", (unsigned char) raw_buffer
[idx
]);
2140 fprintf_filtered (file
, ")");
2144 /* Print the register in hex. */
2145 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
2146 file
, 'x', 1, 0, Val_pretty_default
);
2147 /* If not a vector register, print it also according to its
2149 if (TYPE_VECTOR (REGISTER_VIRTUAL_TYPE (i
)) == 0)
2151 fprintf_filtered (file
, "\t");
2152 val_print (REGISTER_VIRTUAL_TYPE (i
), virtual_buffer
, 0, 0,
2153 file
, 0, 1, 0, Val_pretty_default
);
2157 /* Some sparc specific info. */
2158 if (print_register_hook
!= NULL
)
2159 print_register_hook (i
);
2161 fprintf_filtered (file
, "\n");
2166 sparc_print_registers_info (struct gdbarch
*gdbarch
,
2167 struct ui_file
*file
,
2168 struct frame_info
*frame
,
2169 int regnum
, int print_all
)
2171 sparc_print_registers (gdbarch
, file
, frame
, regnum
, print_all
,
2172 sparc_print_register_hook
);
2176 sparc_do_registers_info (int regnum
, int all
)
2178 sparc_print_registers_info (current_gdbarch
, gdb_stdout
, deprecated_selected_frame
,
2183 // OBSOLETE static void
2184 // OBSOLETE sparclet_print_registers_info (struct gdbarch *gdbarch,
2185 // OBSOLETE struct ui_file *file,
2186 // OBSOLETE struct frame_info *frame,
2187 // OBSOLETE int regnum, int print_all)
2189 // OBSOLETE sparc_print_registers (gdbarch, file, frame, regnum, print_all, NULL);
2193 // OBSOLETE sparclet_do_registers_info (int regnum, int all)
2195 // OBSOLETE sparclet_print_registers_info (current_gdbarch, gdb_stdout,
2196 // OBSOLETE deprecated_selected_frame, regnum, all);
2202 gdb_print_insn_sparc (bfd_vma memaddr
, disassemble_info
*info
)
2204 /* It's necessary to override mach again because print_insn messes it up. */
2205 info
->mach
= TARGET_ARCHITECTURE
->mach
;
2206 return print_insn_sparc (memaddr
, info
);
2209 /* The SPARC passes the arguments on the stack; arguments smaller
2210 than an int are promoted to an int. The first 6 words worth of
2211 args are also passed in registers o0 - o5. */
2214 sparc32_push_arguments (int nargs
, struct value
**args
, CORE_ADDR sp
,
2215 int struct_return
, CORE_ADDR struct_addr
)
2218 int accumulate_size
= 0;
2225 struct sparc_arg
*sparc_args
=
2226 (struct sparc_arg
*) alloca (nargs
* sizeof (struct sparc_arg
));
2227 struct sparc_arg
*m_arg
;
2229 /* Promote arguments if necessary, and calculate their stack offsets
2231 for (i
= 0, m_arg
= sparc_args
; i
< nargs
; i
++, m_arg
++)
2233 struct value
*arg
= args
[i
];
2234 struct type
*arg_type
= check_typedef (VALUE_TYPE (arg
));
2235 /* Cast argument to long if necessary as the compiler does it too. */
2236 switch (TYPE_CODE (arg_type
))
2239 case TYPE_CODE_BOOL
:
2240 case TYPE_CODE_CHAR
:
2241 case TYPE_CODE_RANGE
:
2242 case TYPE_CODE_ENUM
:
2243 if (TYPE_LENGTH (arg_type
) < TYPE_LENGTH (builtin_type_long
))
2245 arg_type
= builtin_type_long
;
2246 arg
= value_cast (arg_type
, arg
);
2252 m_arg
->len
= TYPE_LENGTH (arg_type
);
2253 m_arg
->offset
= accumulate_size
;
2254 accumulate_size
= (accumulate_size
+ m_arg
->len
+ 3) & ~3;
2255 m_arg
->contents
= VALUE_CONTENTS (arg
);
2258 /* Make room for the arguments on the stack. */
2259 accumulate_size
+= DEPRECATED_CALL_DUMMY_STACK_ADJUST
;
2260 sp
= ((sp
- accumulate_size
) & ~7) + DEPRECATED_CALL_DUMMY_STACK_ADJUST
;
2262 /* `Push' arguments on the stack. */
2263 for (i
= 0, oregnum
= 0, m_arg
= sparc_args
;
2267 write_memory (sp
+ m_arg
->offset
, m_arg
->contents
, m_arg
->len
);
2269 j
< m_arg
->len
&& oregnum
< 6;
2270 j
+= SPARC_INTREG_SIZE
, oregnum
++)
2271 deprecated_write_register_gen (O0_REGNUM
+ oregnum
, m_arg
->contents
+ j
);
2278 /* Extract from an array REGBUF containing the (raw) register state
2279 a function return value of type TYPE, and copy that, in virtual format,
2283 sparc32_extract_return_value (struct type
*type
, char *regbuf
, char *valbuf
)
2285 int typelen
= TYPE_LENGTH (type
);
2286 int regsize
= REGISTER_RAW_SIZE (O0_REGNUM
);
2288 if (TYPE_CODE (type
) == TYPE_CODE_FLT
&& SPARC_HAS_FPU
)
2289 memcpy (valbuf
, ®buf
[REGISTER_BYTE (FP0_REGNUM
)], typelen
);
2292 ®buf
[O0_REGNUM
* regsize
+
2294 || TARGET_BYTE_ORDER
== BFD_ENDIAN_LITTLE
? 0
2295 : regsize
- typelen
)],
2300 /* Write into appropriate registers a function return value
2301 of type TYPE, given in virtual format. On SPARCs with FPUs,
2302 float values are returned in %f0 (and %f1). In all other cases,
2303 values are returned in register %o0. */
2306 sparc_store_return_value (struct type
*type
, char *valbuf
)
2309 char buffer
[MAX_REGISTER_SIZE
];
2311 if (TYPE_CODE (type
) == TYPE_CODE_FLT
&& SPARC_HAS_FPU
)
2312 /* Floating-point values are returned in the register pair */
2313 /* formed by %f0 and %f1 (doubles are, anyway). */
2316 /* Other values are returned in register %o0. */
2319 /* Add leading zeros to the value. */
2320 if (TYPE_LENGTH (type
) < REGISTER_RAW_SIZE (regno
))
2322 memset (buffer
, 0, REGISTER_RAW_SIZE (regno
));
2323 memcpy (buffer
+ REGISTER_RAW_SIZE (regno
) - TYPE_LENGTH (type
), valbuf
,
2324 TYPE_LENGTH (type
));
2325 deprecated_write_register_gen (regno
, buffer
);
2328 deprecated_write_register_bytes (REGISTER_BYTE (regno
), valbuf
,
2329 TYPE_LENGTH (type
));
2333 // OBSOLETE extern void
2334 // OBSOLETE sparclet_store_return_value (struct type *type, char *valbuf)
2336 // OBSOLETE /* Other values are returned in register %o0. */
2337 // OBSOLETE deprecated_write_register_bytes (REGISTER_BYTE (O0_REGNUM), valbuf,
2338 // OBSOLETE TYPE_LENGTH (type));
2343 #ifndef CALL_DUMMY_CALL_OFFSET
2344 #define CALL_DUMMY_CALL_OFFSET \
2345 (gdbarch_tdep (current_gdbarch)->call_dummy_call_offset)
2346 #endif /* CALL_DUMMY_CALL_OFFSET */
2348 /* Insert the function address into a call dummy instruction sequence
2351 For structs and unions, if the function was compiled with Sun cc,
2352 it expects 'unimp' after the call. But gcc doesn't use that
2353 (twisted) convention. So leave a nop there for gcc
2354 (DEPRECATED_FIX_CALL_DUMMY can assume it is operating on a pristine
2355 CALL_DUMMY, not one that has already been customized for a
2356 different function). */
2359 sparc_fix_call_dummy (char *dummy
, CORE_ADDR pc
, CORE_ADDR fun
,
2360 struct type
*value_type
, int using_gcc
)
2364 /* Store the relative adddress of the target function into the
2365 'call' instruction. */
2366 store_unsigned_integer (dummy
+ CALL_DUMMY_CALL_OFFSET
, 4,
2368 | (((fun
- (pc
+ CALL_DUMMY_CALL_OFFSET
)) >> 2)
2371 /* If the called function returns an aggregate value, fill in the UNIMP
2372 instruction containing the size of the returned aggregate return value,
2373 which follows the call instruction.
2374 For details see the SPARC Architecture Manual Version 8, Appendix D.3.
2376 Adjust the call_dummy_breakpoint_offset for the bp_call_dummy breakpoint
2377 to the proper address in the call dummy, so that `finish' after a stop
2378 in a call dummy works.
2380 Tweeking current_gdbarch is not an optimal solution, but the call
2381 to sparc_fix_call_dummy is immediately followed by a call to
2382 call_function_by_hand, which is the only function where
2383 dummy_breakpoint_offset is actually used, if it is non-zero. */
2384 if (TYPE_CODE (value_type
) == TYPE_CODE_STRUCT
2385 || TYPE_CODE (value_type
) == TYPE_CODE_UNION
)
2387 store_unsigned_integer (dummy
+ CALL_DUMMY_CALL_OFFSET
+ 8, 4,
2388 TYPE_LENGTH (value_type
) & 0x1fff);
2389 set_gdbarch_deprecated_call_dummy_breakpoint_offset (current_gdbarch
, 0x30);
2392 set_gdbarch_deprecated_call_dummy_breakpoint_offset (current_gdbarch
, 0x2c);
2394 if (!(GDB_TARGET_IS_SPARC64
))
2396 /* If this is not a simulator target, change the first four
2397 instructions of the call dummy to NOPs. Those instructions
2398 include a 'save' instruction and are designed to work around
2399 problems with register window flushing in the simulator. */
2401 if (strcmp (target_shortname
, "sim") != 0)
2403 for (i
= 0; i
< 4; i
++)
2404 store_unsigned_integer (dummy
+ (i
* 4), 4, 0x01000000);
2409 // OBSOLETE /* If this is a bi-endian target, GDB has written the call dummy
2410 // OBSOLETE in little-endian order. We must byte-swap it back to big-endian. */
2411 // OBSOLETE if (bi_endian)
2413 // OBSOLETE for (i = 0; i < CALL_DUMMY_LENGTH; i += 4)
2415 // OBSOLETE char tmp = dummy[i];
2416 // OBSOLETE dummy[i] = dummy[i + 3];
2417 // OBSOLETE dummy[i + 3] = tmp;
2418 // OBSOLETE tmp = dummy[i + 1];
2419 // OBSOLETE dummy[i + 1] = dummy[i + 2];
2420 // OBSOLETE dummy[i + 2] = tmp;
2428 // OBSOLETE /* Set target byte order based on machine type. */
2430 // OBSOLETE static int
2431 // OBSOLETE sparc_target_architecture_hook (const bfd_arch_info_type *ap)
2433 // OBSOLETE int i, j;
2435 // OBSOLETE if (ap->mach == bfd_mach_sparc_sparclite_le)
2437 // OBSOLETE target_byte_order = BFD_ENDIAN_LITTLE;
2438 // OBSOLETE bi_endian = 1;
2441 // OBSOLETE bi_endian = 0;
2442 // OBSOLETE return 1;
2447 * Module "constructor" function.
2450 static struct gdbarch
* sparc_gdbarch_init (struct gdbarch_info info
,
2451 struct gdbarch_list
*arches
);
2452 static void sparc_dump_tdep (struct gdbarch
*, struct ui_file
*);
2455 _initialize_sparc_tdep (void)
2457 /* Hook us into the gdbarch mechanism. */
2458 gdbarch_register (bfd_arch_sparc
, sparc_gdbarch_init
, sparc_dump_tdep
);
2460 deprecated_tm_print_insn
= gdb_print_insn_sparc
;
2461 deprecated_tm_print_insn_info
.mach
= TM_PRINT_INSN_MACH
; /* Selects sparc/sparclite */
2462 /* OBSOLETE target_architecture_hook = sparc_target_architecture_hook; */
2465 /* Compensate for stack bias. Note that we currently don't handle
2466 mixed 32/64 bit code. */
2469 sparc64_read_sp (void)
2471 CORE_ADDR sp
= read_register (SP_REGNUM
);
2479 sparc64_read_fp (void)
2481 CORE_ADDR fp
= read_register (DEPRECATED_FP_REGNUM
);
2489 sparc64_write_sp (CORE_ADDR val
)
2491 CORE_ADDR oldsp
= read_register (SP_REGNUM
);
2493 write_register (SP_REGNUM
, val
- 2047);
2495 write_register (SP_REGNUM
, val
);
2498 /* The SPARC 64 ABI passes floating-point arguments in FP0 to FP31,
2499 and all other arguments in O0 to O5. They are also copied onto
2500 the stack in the correct places. Apparently (empirically),
2501 structs of less than 16 bytes are passed member-by-member in
2502 separate registers, but I am unable to figure out the algorithm.
2503 Some members go in floating point regs, but I don't know which.
2505 FIXME: Handle small structs (less than 16 bytes containing floats).
2507 The counting regimen for using both integer and FP registers
2508 for argument passing is rather odd -- a single counter is used
2509 for both; this means that if the arguments alternate between
2510 int and float, we will waste every other register of both types. */
2513 sparc64_push_arguments (int nargs
, struct value
**args
, CORE_ADDR sp
,
2514 int struct_return
, CORE_ADDR struct_retaddr
)
2516 int i
, j
, register_counter
= 0;
2518 struct type
*sparc_intreg_type
=
2519 TYPE_LENGTH (builtin_type_long
) == SPARC_INTREG_SIZE
?
2520 builtin_type_long
: builtin_type_long_long
;
2522 sp
= (sp
& ~(((unsigned long) SPARC_INTREG_SIZE
) - 1UL));
2524 /* Figure out how much space we'll need. */
2525 for (i
= nargs
- 1; i
>= 0; i
--)
2527 int len
= TYPE_LENGTH (check_typedef (VALUE_TYPE (args
[i
])));
2528 struct value
*copyarg
= args
[i
];
2531 if (copylen
< SPARC_INTREG_SIZE
)
2533 copyarg
= value_cast (sparc_intreg_type
, copyarg
);
2534 copylen
= SPARC_INTREG_SIZE
;
2543 /* if STRUCT_RETURN, then first argument is the struct return location. */
2545 write_register (O0_REGNUM
+ register_counter
++, struct_retaddr
);
2547 /* Now write the arguments onto the stack, while writing FP
2548 arguments into the FP registers, and other arguments into the
2549 first six 'O' registers. */
2551 for (i
= 0; i
< nargs
; i
++)
2553 int len
= TYPE_LENGTH (check_typedef (VALUE_TYPE (args
[i
])));
2554 struct value
*copyarg
= args
[i
];
2555 enum type_code typecode
= TYPE_CODE (VALUE_TYPE (args
[i
]));
2558 if (typecode
== TYPE_CODE_INT
||
2559 typecode
== TYPE_CODE_BOOL
||
2560 typecode
== TYPE_CODE_CHAR
||
2561 typecode
== TYPE_CODE_RANGE
||
2562 typecode
== TYPE_CODE_ENUM
)
2563 if (len
< SPARC_INTREG_SIZE
)
2565 /* Small ints will all take up the size of one intreg on
2567 copyarg
= value_cast (sparc_intreg_type
, copyarg
);
2568 copylen
= SPARC_INTREG_SIZE
;
2571 write_memory (tempsp
, VALUE_CONTENTS (copyarg
), copylen
);
2574 /* Corner case: Structs consisting of a single float member are floats.
2575 * FIXME! I don't know about structs containing multiple floats!
2576 * Structs containing mixed floats and ints are even more weird.
2581 /* Separate float args from all other args. */
2582 if (typecode
== TYPE_CODE_FLT
&& SPARC_HAS_FPU
)
2584 if (register_counter
< 16)
2586 /* This arg gets copied into a FP register. */
2590 case 4: /* Single-precision (float) */
2591 fpreg
= FP0_REGNUM
+ 2 * register_counter
+ 1;
2592 register_counter
+= 1;
2594 case 8: /* Double-precision (double) */
2595 fpreg
= FP0_REGNUM
+ 2 * register_counter
;
2596 register_counter
+= 1;
2598 case 16: /* Quad-precision (long double) */
2599 fpreg
= FP0_REGNUM
+ 2 * register_counter
;
2600 register_counter
+= 2;
2603 internal_error (__FILE__
, __LINE__
, "bad switch");
2605 deprecated_write_register_bytes (REGISTER_BYTE (fpreg
),
2606 VALUE_CONTENTS (args
[i
]),
2610 else /* all other args go into the first six 'o' registers */
2613 j
< len
&& register_counter
< 6;
2614 j
+= SPARC_INTREG_SIZE
)
2616 int oreg
= O0_REGNUM
+ register_counter
;
2618 deprecated_write_register_gen (oreg
, VALUE_CONTENTS (copyarg
) + j
);
2619 register_counter
+= 1;
2626 /* Values <= 32 bytes are returned in o0-o3 (floating-point values are
2627 returned in f0-f3). */
2630 sp64_extract_return_value (struct type
*type
, char *regbuf
, char *valbuf
,
2633 int typelen
= TYPE_LENGTH (type
);
2634 int regsize
= REGISTER_RAW_SIZE (O0_REGNUM
);
2636 if (TYPE_CODE (type
) == TYPE_CODE_FLT
&& SPARC_HAS_FPU
)
2638 memcpy (valbuf
, ®buf
[REGISTER_BYTE (FP0_REGNUM
)], typelen
);
2642 if (TYPE_CODE (type
) != TYPE_CODE_STRUCT
2643 || (TYPE_LENGTH (type
) > 32))
2646 ®buf
[O0_REGNUM
* regsize
+
2647 (typelen
>= regsize
? 0 : regsize
- typelen
)],
2653 char *o0
= ®buf
[O0_REGNUM
* regsize
];
2654 char *f0
= ®buf
[FP0_REGNUM
* regsize
];
2657 for (x
= 0; x
< TYPE_NFIELDS (type
); x
++)
2659 struct field
*f
= &TYPE_FIELDS (type
)[x
];
2660 /* FIXME: We may need to handle static fields here. */
2661 int whichreg
= (f
->loc
.bitpos
+ bitoffset
) / 32;
2662 int remainder
= ((f
->loc
.bitpos
+ bitoffset
) % 32) / 8;
2663 int where
= (f
->loc
.bitpos
+ bitoffset
) / 8;
2664 int size
= TYPE_LENGTH (f
->type
);
2665 int typecode
= TYPE_CODE (f
->type
);
2667 if (typecode
== TYPE_CODE_STRUCT
)
2669 sp64_extract_return_value (f
->type
,
2672 bitoffset
+ f
->loc
.bitpos
);
2674 else if (typecode
== TYPE_CODE_FLT
&& SPARC_HAS_FPU
)
2676 memcpy (valbuf
+ where
, &f0
[whichreg
* 4] + remainder
, size
);
2680 memcpy (valbuf
+ where
, &o0
[whichreg
* 4] + remainder
, size
);
2687 sparc64_extract_return_value (struct type
*type
, char *regbuf
, char *valbuf
)
2689 sp64_extract_return_value (type
, regbuf
, valbuf
, 0);
2693 // OBSOLETE extern void
2694 // OBSOLETE sparclet_extract_return_value (struct type *type,
2695 // OBSOLETE char *regbuf,
2696 // OBSOLETE char *valbuf)
2698 // OBSOLETE regbuf += REGISTER_RAW_SIZE (O0_REGNUM) * 8;
2699 // OBSOLETE if (TYPE_LENGTH (type) < REGISTER_RAW_SIZE (O0_REGNUM))
2700 // OBSOLETE regbuf += REGISTER_RAW_SIZE (O0_REGNUM) - TYPE_LENGTH (type);
2702 // OBSOLETE memcpy ((void *) valbuf, regbuf, TYPE_LENGTH (type));
2707 sparc32_stack_align (CORE_ADDR addr
)
2709 return ((addr
+ 7) & -8);
2713 sparc64_stack_align (CORE_ADDR addr
)
2715 return ((addr
+ 15) & -16);
2719 sparc_print_extra_frame_info (struct frame_info
*fi
)
2721 if (fi
&& get_frame_extra_info (fi
) && get_frame_extra_info (fi
)->flat
)
2722 printf_filtered (" flat, pc saved at 0x%s, fp saved at 0x%s\n",
2723 paddr_nz (get_frame_extra_info (fi
)->pc_addr
),
2724 paddr_nz (get_frame_extra_info (fi
)->fp_addr
));
2727 /* MULTI_ARCH support */
2730 sparc32_register_name (int regno
)
2732 static char *register_names
[] =
2733 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
2734 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
2735 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
2736 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
2738 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
2739 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
2740 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
2741 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
2743 "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr"
2747 regno
>= (sizeof (register_names
) / sizeof (register_names
[0])))
2750 return register_names
[regno
];
2754 sparc64_register_name (int regno
)
2756 static char *register_names
[] =
2757 { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
2758 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
2759 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
2760 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
2762 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
2763 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
2764 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
2765 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
2766 "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",
2767 "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",
2769 "pc", "npc", "ccr", "fsr", "fprs", "y", "asi", "ver",
2770 "tick", "pil", "pstate", "tstate", "tba", "tl", "tt", "tpc",
2771 "tnpc", "wstate", "cwp", "cansave", "canrestore", "cleanwin", "otherwin",
2772 "asr16", "asr17", "asr18", "asr19", "asr20", "asr21", "asr22", "asr23",
2773 "asr24", "asr25", "asr26", "asr27", "asr28", "asr29", "asr30", "asr31",
2774 /* These are here at the end to simplify removing them if we have to. */
2775 "icc", "xcc", "fcc0", "fcc1", "fcc2", "fcc3"
2779 regno
>= (sizeof (register_names
) / sizeof (register_names
[0])))
2782 return register_names
[regno
];
2786 // OBSOLETE static const char *
2787 // OBSOLETE sparclite_register_name (int regno)
2789 // OBSOLETE static char *register_names[] =
2790 // OBSOLETE { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
2791 // OBSOLETE "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
2792 // OBSOLETE "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
2793 // OBSOLETE "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
2795 // OBSOLETE "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
2796 // OBSOLETE "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
2797 // OBSOLETE "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
2798 // OBSOLETE "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
2800 // OBSOLETE "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr",
2801 // OBSOLETE "dia1", "dia2", "dda1", "dda2", "ddv1", "ddv2", "dcr", "dsr"
2804 // OBSOLETE if (regno < 0 ||
2805 // OBSOLETE regno >= (sizeof (register_names) / sizeof (register_names[0])))
2806 // OBSOLETE return NULL;
2808 // OBSOLETE return register_names[regno];
2813 // OBSOLETE static const char *
2814 // OBSOLETE sparclet_register_name (int regno)
2816 // OBSOLETE static char *register_names[] =
2817 // OBSOLETE { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
2818 // OBSOLETE "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
2819 // OBSOLETE "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
2820 // OBSOLETE "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
2822 // OBSOLETE "", "", "", "", "", "", "", "", /* no floating point registers */
2823 // OBSOLETE "", "", "", "", "", "", "", "",
2824 // OBSOLETE "", "", "", "", "", "", "", "",
2825 // OBSOLETE "", "", "", "", "", "", "", "",
2827 // OBSOLETE "y", "psr", "wim", "tbr", "pc", "npc", "", "", /* no FPSR or CPSR */
2828 // OBSOLETE "ccsr", "ccpr", "cccrcr", "ccor", "ccobr", "ccibr", "ccir", "",
2830 // OBSOLETE /* ASR15 ASR19 (don't display them) */
2831 // OBSOLETE "asr1", "", "asr17", "asr18", "", "asr20", "asr21", "asr22"
2832 // OBSOLETE /* None of the rest get displayed */
2834 // OBSOLETE "awr0", "awr1", "awr2", "awr3", "awr4", "awr5", "awr6", "awr7",
2835 // OBSOLETE "awr8", "awr9", "awr10", "awr11", "awr12", "awr13", "awr14", "awr15",
2836 // OBSOLETE "awr16", "awr17", "awr18", "awr19", "awr20", "awr21", "awr22", "awr23",
2837 // OBSOLETE "awr24", "awr25", "awr26", "awr27", "awr28", "awr29", "awr30", "awr31",
2839 // OBSOLETE #endif /* 0 */
2842 // OBSOLETE if (regno < 0 ||
2843 // OBSOLETE regno >= (sizeof (register_names) / sizeof (register_names[0])))
2844 // OBSOLETE return NULL;
2846 // OBSOLETE return register_names[regno];
2851 sparc_push_return_address (CORE_ADDR pc_unused
, CORE_ADDR sp
)
2853 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
2855 /* The return PC of the dummy_frame is the former 'current' PC
2856 (where we were before we made the target function call).
2857 This is saved in %i7 by push_dummy_frame.
2859 We will save the 'call dummy location' (ie. the address
2860 to which the target function will return) in %o7.
2861 This address will actually be the program's entry point.
2862 There will be a special call_dummy breakpoint there. */
2864 write_register (O7_REGNUM
,
2865 CALL_DUMMY_ADDRESS () - 8);
2871 /* Should call_function allocate stack space for a struct return? */
2874 sparc64_use_struct_convention (int gcc_p
, struct type
*type
)
2876 return (TYPE_LENGTH (type
) > 32);
2879 /* Store the address of the place in which to copy the structure the
2880 subroutine will return. This is called from call_function_by_hand.
2881 The ultimate mystery is, tho, what is the value "16"?
2883 MVS: That's the offset from where the sp is now, to where the
2884 subroutine is gonna expect to find the struct return address. */
2887 sparc32_store_struct_return (CORE_ADDR addr
, CORE_ADDR sp
)
2892 val
= alloca (SPARC_INTREG_SIZE
);
2893 store_unsigned_integer (val
, SPARC_INTREG_SIZE
, addr
);
2894 write_memory (sp
+ (16 * SPARC_INTREG_SIZE
), val
, SPARC_INTREG_SIZE
);
2896 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
2898 /* Now adjust the value of the link register, which was previously
2899 stored by push_return_address. Functions that return structs are
2900 peculiar in that they return to link register + 12, rather than
2901 link register + 8. */
2903 o7
= read_register (O7_REGNUM
);
2904 write_register (O7_REGNUM
, o7
- 4);
2909 sparc64_store_struct_return (CORE_ADDR addr
, CORE_ADDR sp
)
2911 /* FIXME: V9 uses %o0 for this. */
2912 /* FIXME MVS: Only for small enough structs!!! */
2914 target_write_memory (sp
+ (16 * SPARC_INTREG_SIZE
),
2915 (char *) &addr
, SPARC_INTREG_SIZE
);
2917 if (CALL_DUMMY_LOCATION
== AT_ENTRY_POINT
)
2919 /* Now adjust the value of the link register, which was previously
2920 stored by push_return_address. Functions that return structs are
2921 peculiar in that they return to link register + 12, rather than
2922 link register + 8. */
2924 write_register (O7_REGNUM
, read_register (O7_REGNUM
) - 4);
2929 /* Default target data type for register REGNO. */
2931 static struct type
*
2932 sparc32_register_virtual_type (int regno
)
2934 if (regno
== PC_REGNUM
||
2935 regno
== DEPRECATED_FP_REGNUM
||
2937 return builtin_type_unsigned_int
;
2939 return builtin_type_int
;
2941 return builtin_type_float
;
2942 return builtin_type_int
;
2945 static struct type
*
2946 sparc64_register_virtual_type (int regno
)
2948 if (regno
== PC_REGNUM
||
2949 regno
== DEPRECATED_FP_REGNUM
||
2951 return builtin_type_unsigned_long_long
;
2953 return builtin_type_long_long
;
2955 return builtin_type_float
;
2957 return builtin_type_double
;
2958 return builtin_type_long_long
;
2961 /* Number of bytes of storage in the actual machine representation for
2965 sparc32_register_size (int regno
)
2971 sparc64_register_size (int regno
)
2973 return (regno
< 32 ? 8 : regno
< 64 ? 4 : 8);
2976 /* Index within the `registers' buffer of the first byte of the space
2977 for register REGNO. */
2980 sparc32_register_byte (int regno
)
2986 sparc64_register_byte (int regno
)
2990 else if (regno
< 64)
2991 return 32 * 8 + (regno
- 32) * 4;
2992 else if (regno
< 80)
2993 return 32 * 8 + 32 * 4 + (regno
- 64) * 8;
2995 return 64 * 8 + (regno
- 80) * 8;
2998 /* Immediately after a function call, return the saved pc.
2999 Can't go through the frames for this because on some machines
3000 the new frame is not set up until the new function executes
3001 some instructions. */
3004 sparc_saved_pc_after_call (struct frame_info
*fi
)
3006 return sparc_pc_adjust (read_register (RP_REGNUM
));
3009 /* Convert registers between 'raw' and 'virtual' formats.
3010 They are the same on sparc, so there's nothing to do. */
3013 sparc_convert_to_virtual (int regnum
, struct type
*type
, char *from
, char *to
)
3014 { /* do nothing (should never be called) */
3018 sparc_convert_to_raw (struct type
*type
, int regnum
, char *from
, char *to
)
3019 { /* do nothing (should never be called) */
3022 /* Init saved regs: nothing to do, just a place-holder function. */
3025 sparc_frame_init_saved_regs (struct frame_info
*fi_ignored
)
3029 /* gdbarch fix call dummy:
3030 All this function does is rearrange the arguments before calling
3031 sparc_fix_call_dummy (which does the real work). */
3034 sparc_gdbarch_fix_call_dummy (char *dummy
,
3038 struct value
**args
,
3042 if (CALL_DUMMY_LOCATION
== ON_STACK
)
3043 sparc_fix_call_dummy (dummy
, pc
, fun
, type
, gcc_p
);
3046 /* CALL_DUMMY_ADDRESS: fetch the breakpoint address for a call dummy. */
3049 sparc_call_dummy_address (void)
3051 return (DEPRECATED_CALL_DUMMY_START_OFFSET
) + DEPRECATED_CALL_DUMMY_BREAKPOINT_OFFSET
;
3054 /* Supply the Y register number to those that need it. */
3057 sparc_y_regnum (void)
3059 return gdbarch_tdep (current_gdbarch
)->y_regnum
;
3063 sparc_reg_struct_has_addr (int gcc_p
, struct type
*type
)
3065 if (GDB_TARGET_IS_SPARC64
)
3066 return (TYPE_LENGTH (type
) > 32);
3068 return (gcc_p
!= 1);
3072 sparc_intreg_size (void)
3074 return SPARC_INTREG_SIZE
;
3078 sparc_return_value_on_stack (struct type
*type
)
3080 if (TYPE_CODE (type
) == TYPE_CODE_FLT
&&
3081 TYPE_LENGTH (type
) > 8)
3088 * Gdbarch "constructor" function.
3091 #define SPARC32_CALL_DUMMY_ON_STACK
3093 #define SPARC_SP_REGNUM 14
3094 #define SPARC_FP_REGNUM 30
3095 #define SPARC_FP0_REGNUM 32
3096 #define SPARC32_NPC_REGNUM 69
3097 #define SPARC32_PC_REGNUM 68
3098 #define SPARC32_Y_REGNUM 64
3099 #define SPARC64_PC_REGNUM 80
3100 #define SPARC64_NPC_REGNUM 81
3101 #define SPARC64_Y_REGNUM 85
3103 static struct gdbarch
*
3104 sparc_gdbarch_init (struct gdbarch_info info
, struct gdbarch_list
*arches
)
3106 struct gdbarch
*gdbarch
;
3107 struct gdbarch_tdep
*tdep
;
3109 static LONGEST call_dummy_32
[] =
3110 { 0xbc100001, 0x9de38000, 0xbc100002, 0xbe100003,
3111 0xda03a058, 0xd803a054, 0xd603a050, 0xd403a04c,
3112 0xd203a048, 0x40000000, 0xd003a044, 0x01000000,
3113 0x91d02001, 0x01000000
3115 static LONGEST call_dummy_64
[] =
3116 { 0x9de3bec0fd3fa7f7LL
, 0xf93fa7eff53fa7e7LL
,
3117 0xf13fa7dfed3fa7d7LL
, 0xe93fa7cfe53fa7c7LL
,
3118 0xe13fa7bfdd3fa7b7LL
, 0xd93fa7afd53fa7a7LL
,
3119 0xd13fa79fcd3fa797LL
, 0xc93fa78fc53fa787LL
,
3120 0xc13fa77fcc3fa777LL
, 0xc83fa76fc43fa767LL
,
3121 0xc03fa75ffc3fa757LL
, 0xf83fa74ff43fa747LL
,
3122 0xf03fa73f01000000LL
, 0x0100000001000000LL
,
3123 0x0100000091580000LL
, 0xd027a72b93500000LL
,
3124 0xd027a72791480000LL
, 0xd027a72391400000LL
,
3125 0xd027a71fda5ba8a7LL
, 0xd85ba89fd65ba897LL
,
3126 0xd45ba88fd25ba887LL
, 0x9fc02000d05ba87fLL
,
3127 0x0100000091d02001LL
, 0x0100000001000000LL
3129 static LONGEST call_dummy_nil
[] = {0};
3131 /* Try to determine the OS ABI of the object we are loading. */
3133 if (info
.abfd
!= NULL
3134 && info
.osabi
== GDB_OSABI_UNKNOWN
)
3136 /* If it's an ELF file, assume it's Solaris. */
3137 if (bfd_get_flavour (info
.abfd
) == bfd_target_elf_flavour
)
3138 info
.osabi
= GDB_OSABI_SOLARIS
;
3141 /* First see if there is already a gdbarch that can satisfy the request. */
3142 arches
= gdbarch_list_lookup_by_info (arches
, &info
);
3144 return arches
->gdbarch
;
3146 /* None found: is the request for a sparc architecture? */
3147 if (info
.bfd_arch_info
->arch
!= bfd_arch_sparc
)
3148 return NULL
; /* No; then it's not for us. */
3150 /* Yes: create a new gdbarch for the specified machine type. */
3151 tdep
= (struct gdbarch_tdep
*) xmalloc (sizeof (struct gdbarch_tdep
));
3152 gdbarch
= gdbarch_alloc (&info
, tdep
);
3154 /* First set settings that are common for all sparc architectures. */
3155 set_gdbarch_believe_pcc_promotion (gdbarch
, 1);
3156 set_gdbarch_breakpoint_from_pc (gdbarch
, memory_breakpoint_from_pc
);
3157 set_gdbarch_decr_pc_after_break (gdbarch
, 0);
3158 set_gdbarch_double_bit (gdbarch
, 8 * TARGET_CHAR_BIT
);
3159 set_gdbarch_deprecated_extract_struct_value_address (gdbarch
, sparc_extract_struct_value_address
);
3160 set_gdbarch_deprecated_fix_call_dummy (gdbarch
, sparc_gdbarch_fix_call_dummy
);
3161 set_gdbarch_float_bit (gdbarch
, 4 * TARGET_CHAR_BIT
);
3162 set_gdbarch_deprecated_fp_regnum (gdbarch
, SPARC_FP_REGNUM
);
3163 set_gdbarch_fp0_regnum (gdbarch
, SPARC_FP0_REGNUM
);
3164 set_gdbarch_deprecated_frame_chain (gdbarch
, sparc_frame_chain
);
3165 set_gdbarch_deprecated_frame_init_saved_regs (gdbarch
, sparc_frame_init_saved_regs
);
3166 set_gdbarch_frame_num_args (gdbarch
, frame_num_args_unknown
);
3167 set_gdbarch_deprecated_frame_saved_pc (gdbarch
, sparc_frame_saved_pc
);
3168 set_gdbarch_frameless_function_invocation (gdbarch
,
3169 frameless_look_for_prologue
);
3170 set_gdbarch_deprecated_get_saved_register (gdbarch
, sparc_get_saved_register
);
3171 set_gdbarch_deprecated_init_extra_frame_info (gdbarch
, sparc_init_extra_frame_info
);
3172 set_gdbarch_inner_than (gdbarch
, core_addr_lessthan
);
3173 set_gdbarch_int_bit (gdbarch
, 4 * TARGET_CHAR_BIT
);
3174 set_gdbarch_long_double_bit (gdbarch
, 16 * TARGET_CHAR_BIT
);
3175 set_gdbarch_long_long_bit (gdbarch
, 8 * TARGET_CHAR_BIT
);
3176 set_gdbarch_deprecated_max_register_raw_size (gdbarch
, 8);
3177 set_gdbarch_deprecated_max_register_virtual_size (gdbarch
, 8);
3178 set_gdbarch_deprecated_pop_frame (gdbarch
, sparc_pop_frame
);
3179 set_gdbarch_deprecated_push_return_address (gdbarch
, sparc_push_return_address
);
3180 set_gdbarch_deprecated_push_dummy_frame (gdbarch
, sparc_push_dummy_frame
);
3181 set_gdbarch_read_pc (gdbarch
, generic_target_read_pc
);
3182 set_gdbarch_register_convert_to_raw (gdbarch
, sparc_convert_to_raw
);
3183 set_gdbarch_register_convert_to_virtual (gdbarch
,
3184 sparc_convert_to_virtual
);
3185 set_gdbarch_register_convertible (gdbarch
,
3186 generic_register_convertible_not
);
3187 set_gdbarch_reg_struct_has_addr (gdbarch
, sparc_reg_struct_has_addr
);
3188 set_gdbarch_return_value_on_stack (gdbarch
, sparc_return_value_on_stack
);
3189 set_gdbarch_deprecated_saved_pc_after_call (gdbarch
, sparc_saved_pc_after_call
);
3190 set_gdbarch_prologue_frameless_p (gdbarch
, sparc_prologue_frameless_p
);
3191 set_gdbarch_short_bit (gdbarch
, 2 * TARGET_CHAR_BIT
);
3192 set_gdbarch_skip_prologue (gdbarch
, sparc_skip_prologue
);
3193 set_gdbarch_sp_regnum (gdbarch
, SPARC_SP_REGNUM
);
3194 set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch
, 0);
3195 set_gdbarch_write_pc (gdbarch
, generic_target_write_pc
);
3198 * Settings that depend only on 32/64 bit word size
3201 switch (info
.bfd_arch_info
->mach
)
3203 case bfd_mach_sparc
:
3205 // OBSOLETE case bfd_mach_sparc_sparclet:
3206 // OBSOLETE case bfd_mach_sparc_sparclite:
3208 case bfd_mach_sparc_v8plus
:
3209 case bfd_mach_sparc_v8plusa
:
3211 // OBSOLETE case bfd_mach_sparc_sparclite_le:
3213 /* 32-bit machine types: */
3215 #ifdef SPARC32_CALL_DUMMY_ON_STACK
3216 set_gdbarch_deprecated_pc_in_call_dummy (gdbarch
, deprecated_pc_in_call_dummy_on_stack
);
3217 set_gdbarch_call_dummy_address (gdbarch
, sparc_call_dummy_address
);
3218 set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch
, 0x30);
3219 set_gdbarch_deprecated_call_dummy_length (gdbarch
, 0x38);
3221 /* NOTE: cagney/2003-05-01: Using the just added push_dummy_code
3222 architecture method, it is now possible to implement a
3223 generic dummy frames based inferior function call that stores
3224 the breakpoint (and struct info) on the stack. Further, by
3225 treating a SIGSEG at a breakpoint as equivalent to a SIGTRAP
3226 it is even possible to make this work when the stack is
3229 NOTE: cagney/2002-04-26: Based from info posted by Peter
3230 Schauer around Oct '99. Briefly, due to aspects of the SPARC
3231 ABI, it isn't possible to use ON_STACK with a strictly
3234 Peter Schauer writes ...
3236 No, any call from GDB to a user function returning a
3237 struct/union will fail miserably. Try this:
3256 for (i = 0; i < 4; i++)
3262 Set a breakpoint at the gx = sret () statement, run to it and
3263 issue a `print sret()'. It will not succed with your
3264 approach, and I doubt that continuing the program will work
3267 For details of the ABI see the Sparc Architecture Manual. I
3268 have Version 8 (Prentice Hall ISBN 0-13-825001-4) and the
3269 calling conventions for functions returning aggregate values
3270 are explained in Appendix D.3. */
3272 set_gdbarch_call_dummy_location (gdbarch
, ON_STACK
);
3273 set_gdbarch_deprecated_call_dummy_words (gdbarch
, call_dummy_32
);
3275 set_gdbarch_deprecated_pc_in_call_dummy (gdbarch
, deprecated_pc_in_call_dummy_at_entry_point
);
3276 set_gdbarch_deprecated_call_dummy_words (gdbarch
, call_dummy_nil
);
3278 set_gdbarch_deprecated_call_dummy_stack_adjust (gdbarch
, 68);
3279 set_gdbarch_frame_args_skip (gdbarch
, 68);
3280 set_gdbarch_function_start_offset (gdbarch
, 0);
3281 set_gdbarch_long_bit (gdbarch
, 4 * TARGET_CHAR_BIT
);
3282 set_gdbarch_npc_regnum (gdbarch
, SPARC32_NPC_REGNUM
);
3283 set_gdbarch_pc_regnum (gdbarch
, SPARC32_PC_REGNUM
);
3284 set_gdbarch_ptr_bit (gdbarch
, 4 * TARGET_CHAR_BIT
);
3285 set_gdbarch_deprecated_push_arguments (gdbarch
, sparc32_push_arguments
);
3286 set_gdbarch_read_sp (gdbarch
, generic_target_read_sp
);
3288 set_gdbarch_register_byte (gdbarch
, sparc32_register_byte
);
3289 set_gdbarch_register_raw_size (gdbarch
, sparc32_register_size
);
3290 set_gdbarch_deprecated_register_size (gdbarch
, 4);
3291 set_gdbarch_register_virtual_size (gdbarch
, sparc32_register_size
);
3292 set_gdbarch_register_virtual_type (gdbarch
,
3293 sparc32_register_virtual_type
);
3294 #ifdef SPARC32_CALL_DUMMY_ON_STACK
3295 set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch
, sizeof (call_dummy_32
));
3297 set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch
, 0);
3299 set_gdbarch_stack_align (gdbarch
, sparc32_stack_align
);
3300 set_gdbarch_deprecated_extra_stack_alignment_needed (gdbarch
, 1);
3301 set_gdbarch_deprecated_store_struct_return (gdbarch
, sparc32_store_struct_return
);
3302 set_gdbarch_use_struct_convention (gdbarch
,
3303 generic_use_struct_convention
);
3304 set_gdbarch_deprecated_dummy_write_sp (gdbarch
, generic_target_write_sp
);
3305 tdep
->y_regnum
= SPARC32_Y_REGNUM
;
3306 tdep
->fp_max_regnum
= SPARC_FP0_REGNUM
+ 32;
3307 tdep
->intreg_size
= 4;
3308 tdep
->reg_save_offset
= 0x60;
3309 tdep
->call_dummy_call_offset
= 0x24;
3312 case bfd_mach_sparc_v9
:
3313 case bfd_mach_sparc_v9a
:
3314 /* 64-bit machine types: */
3315 default: /* Any new machine type is likely to be 64-bit. */
3317 #ifdef SPARC64_CALL_DUMMY_ON_STACK
3318 set_gdbarch_deprecated_pc_in_call_dummy (gdbarch
, deprecated_pc_in_call_dummy_on_stack
);
3319 set_gdbarch_call_dummy_address (gdbarch
, sparc_call_dummy_address
);
3320 set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch
, 8 * 4);
3321 set_gdbarch_deprecated_call_dummy_length (gdbarch
, 192);
3322 set_gdbarch_call_dummy_location (gdbarch
, ON_STACK
);
3323 set_gdbarch_deprecated_call_dummy_start_offset (gdbarch
, 148);
3324 set_gdbarch_deprecated_call_dummy_words (gdbarch
, call_dummy_64
);
3326 set_gdbarch_deprecated_pc_in_call_dummy (gdbarch
, deprecated_pc_in_call_dummy_at_entry_point
);
3327 set_gdbarch_deprecated_call_dummy_words (gdbarch
, call_dummy_nil
);
3329 set_gdbarch_deprecated_call_dummy_stack_adjust (gdbarch
, 128);
3330 set_gdbarch_frame_args_skip (gdbarch
, 136);
3331 set_gdbarch_function_start_offset (gdbarch
, 0);
3332 set_gdbarch_long_bit (gdbarch
, 8 * TARGET_CHAR_BIT
);
3333 set_gdbarch_npc_regnum (gdbarch
, SPARC64_NPC_REGNUM
);
3334 set_gdbarch_pc_regnum (gdbarch
, SPARC64_PC_REGNUM
);
3335 set_gdbarch_ptr_bit (gdbarch
, 8 * TARGET_CHAR_BIT
);
3336 set_gdbarch_deprecated_push_arguments (gdbarch
, sparc64_push_arguments
);
3337 /* NOTE different for at_entry */
3338 set_gdbarch_deprecated_target_read_fp (gdbarch
, sparc64_read_fp
);
3339 set_gdbarch_read_sp (gdbarch
, sparc64_read_sp
);
3340 /* Some of the registers aren't 64 bits, but it's a lot simpler just
3341 to assume they all are (since most of them are). */
3342 set_gdbarch_register_byte (gdbarch
, sparc64_register_byte
);
3343 set_gdbarch_register_raw_size (gdbarch
, sparc64_register_size
);
3344 set_gdbarch_deprecated_register_size (gdbarch
, 8);
3345 set_gdbarch_register_virtual_size (gdbarch
, sparc64_register_size
);
3346 set_gdbarch_register_virtual_type (gdbarch
,
3347 sparc64_register_virtual_type
);
3348 #ifdef SPARC64_CALL_DUMMY_ON_STACK
3349 set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch
, sizeof (call_dummy_64
));
3351 set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch
, 0);
3353 set_gdbarch_stack_align (gdbarch
, sparc64_stack_align
);
3354 set_gdbarch_deprecated_extra_stack_alignment_needed (gdbarch
, 1);
3355 set_gdbarch_deprecated_store_struct_return (gdbarch
, sparc64_store_struct_return
);
3356 set_gdbarch_use_struct_convention (gdbarch
,
3357 sparc64_use_struct_convention
);
3358 set_gdbarch_deprecated_dummy_write_sp (gdbarch
, sparc64_write_sp
);
3359 tdep
->y_regnum
= SPARC64_Y_REGNUM
;
3360 tdep
->fp_max_regnum
= SPARC_FP0_REGNUM
+ 48;
3361 tdep
->intreg_size
= 8;
3362 tdep
->reg_save_offset
= 0x90;
3363 tdep
->call_dummy_call_offset
= 148 + 4 * 5;
3368 * Settings that vary per-architecture:
3371 switch (info
.bfd_arch_info
->mach
)
3373 case bfd_mach_sparc
:
3374 set_gdbarch_deprecated_extract_return_value (gdbarch
, sparc32_extract_return_value
);
3375 set_gdbarch_num_regs (gdbarch
, 72);
3376 set_gdbarch_register_bytes (gdbarch
, 32*4 + 32*4 + 8*4);
3377 set_gdbarch_register_name (gdbarch
, sparc32_register_name
);
3378 set_gdbarch_deprecated_store_return_value (gdbarch
, sparc_store_return_value
);
3380 // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */
3382 tdep
->fp_register_bytes
= 32 * 4;
3383 tdep
->print_insn_mach
= bfd_mach_sparc
;
3386 // OBSOLETE case bfd_mach_sparc_sparclet:
3387 // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparclet_extract_return_value);
3388 // OBSOLETE set_gdbarch_num_regs (gdbarch, 32 + 32 + 8 + 8 + 8);
3389 // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4 + 8*4);
3390 // OBSOLETE set_gdbarch_register_name (gdbarch, sparclet_register_name);
3391 // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparclet_store_return_value);
3392 // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */
3393 // OBSOLETE tdep->fp_register_bytes = 0;
3394 // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclet;
3398 // OBSOLETE case bfd_mach_sparc_sparclite:
3399 // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparc32_extract_return_value);
3400 // OBSOLETE set_gdbarch_num_regs (gdbarch, 80);
3401 // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4);
3402 // OBSOLETE set_gdbarch_register_name (gdbarch, sparclite_register_name);
3403 // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value);
3404 // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */
3405 // OBSOLETE tdep->fp_register_bytes = 0;
3406 // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclite;
3409 case bfd_mach_sparc_v8plus
:
3410 set_gdbarch_deprecated_extract_return_value (gdbarch
, sparc32_extract_return_value
);
3411 set_gdbarch_num_regs (gdbarch
, 72);
3412 set_gdbarch_register_bytes (gdbarch
, 32*4 + 32*4 + 8*4);
3413 set_gdbarch_register_name (gdbarch
, sparc32_register_name
);
3414 set_gdbarch_deprecated_store_return_value (gdbarch
, sparc_store_return_value
);
3415 tdep
->print_insn_mach
= bfd_mach_sparc
;
3416 tdep
->fp_register_bytes
= 32 * 4;
3418 // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */
3421 case bfd_mach_sparc_v8plusa
:
3422 set_gdbarch_deprecated_extract_return_value (gdbarch
, sparc32_extract_return_value
);
3423 set_gdbarch_num_regs (gdbarch
, 72);
3424 set_gdbarch_register_bytes (gdbarch
, 32*4 + 32*4 + 8*4);
3425 set_gdbarch_register_name (gdbarch
, sparc32_register_name
);
3426 set_gdbarch_deprecated_store_return_value (gdbarch
, sparc_store_return_value
);
3428 // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */
3430 tdep
->fp_register_bytes
= 32 * 4;
3431 tdep
->print_insn_mach
= bfd_mach_sparc
;
3434 // OBSOLETE case bfd_mach_sparc_sparclite_le:
3435 // OBSOLETE set_gdbarch_deprecated_extract_return_value (gdbarch, sparc32_extract_return_value);
3436 // OBSOLETE set_gdbarch_num_regs (gdbarch, 80);
3437 // OBSOLETE set_gdbarch_register_bytes (gdbarch, 32*4 + 32*4 + 8*4 + 8*4);
3438 // OBSOLETE set_gdbarch_register_name (gdbarch, sparclite_register_name);
3439 // OBSOLETE set_gdbarch_deprecated_store_return_value (gdbarch, sparc_store_return_value);
3440 // OBSOLETE tdep->has_fpu = 0; /* (all but sparclet and sparclite) */
3441 // OBSOLETE tdep->fp_register_bytes = 0;
3442 // OBSOLETE tdep->print_insn_mach = bfd_mach_sparc_sparclite;
3445 case bfd_mach_sparc_v9
:
3446 set_gdbarch_deprecated_extract_return_value (gdbarch
, sparc64_extract_return_value
);
3447 set_gdbarch_num_regs (gdbarch
, 125);
3448 set_gdbarch_register_bytes (gdbarch
, 32*8 + 32*8 + 45*8);
3449 set_gdbarch_register_name (gdbarch
, sparc64_register_name
);
3450 set_gdbarch_deprecated_store_return_value (gdbarch
, sparc_store_return_value
);
3452 // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */
3454 tdep
->fp_register_bytes
= 64 * 4;
3455 tdep
->print_insn_mach
= bfd_mach_sparc_v9a
;
3457 case bfd_mach_sparc_v9a
:
3458 set_gdbarch_deprecated_extract_return_value (gdbarch
, sparc64_extract_return_value
);
3459 set_gdbarch_num_regs (gdbarch
, 125);
3460 set_gdbarch_register_bytes (gdbarch
, 32*8 + 32*8 + 45*8);
3461 set_gdbarch_register_name (gdbarch
, sparc64_register_name
);
3462 set_gdbarch_deprecated_store_return_value (gdbarch
, sparc_store_return_value
);
3464 // OBSOLETE tdep->has_fpu = 1; /* (all but sparclet and sparclite) */
3466 tdep
->fp_register_bytes
= 64 * 4;
3467 tdep
->print_insn_mach
= bfd_mach_sparc_v9a
;
3471 /* Hook in OS ABI-specific overrides, if they have been registered. */
3472 gdbarch_init_osabi (info
, gdbarch
);
3478 sparc_dump_tdep (struct gdbarch
*current_gdbarch
, struct ui_file
*file
)
3480 struct gdbarch_tdep
*tdep
= gdbarch_tdep (current_gdbarch
);
3486 // OBSOLETE fprintf_unfiltered (file, "sparc_dump_tdep: has_fpu = %d\n",
3487 // OBSOLETE tdep->has_fpu);
3489 fprintf_unfiltered (file
, "sparc_dump_tdep: fp_register_bytes = %d\n",
3490 tdep
->fp_register_bytes
);
3491 fprintf_unfiltered (file
, "sparc_dump_tdep: y_regnum = %d\n",
3493 fprintf_unfiltered (file
, "sparc_dump_tdep: fp_max_regnum = %d\n",
3494 tdep
->fp_max_regnum
);
3495 fprintf_unfiltered (file
, "sparc_dump_tdep: intreg_size = %d\n",
3497 fprintf_unfiltered (file
, "sparc_dump_tdep: reg_save_offset = %d\n",
3498 tdep
->reg_save_offset
);
3499 fprintf_unfiltered (file
, "sparc_dump_tdep: call_dummy_call_offset = %d\n",
3500 tdep
->call_dummy_call_offset
);
3501 fprintf_unfiltered (file
, "sparc_dump_tdep: print_insn_match = %d\n",
3502 tdep
->print_insn_mach
);