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[deliverable/binutils-gdb.git] / gdb / sparc64-tdep.c
CommitLineData
8b39fe56
MK		 1/* Target-dependent code for UltraSPARC.
2
0b302171 3 Copyright (C) 2003-2012 Free Software Foundation, Inc.
8b39fe56
MK		 4
5 This file is part of GDB.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
a9762ec7 9 the Free Software Foundation; either version 3 of the License, or
8b39fe56
MK		 10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
a9762ec7 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
8b39fe56
MK		 19
20#include "defs.h"
21#include "arch-utils.h"
02a71ae8 22#include "dwarf2-frame.h"
8b39fe56
MK		 23#include "floatformat.h"
24#include "frame.h"
25#include "frame-base.h"
26#include "frame-unwind.h"
27#include "gdbcore.h"
28#include "gdbtypes.h"
386c036b
MK		 29#include "inferior.h"
30#include "symtab.h"
31#include "objfiles.h"
8b39fe56
MK		 32#include "osabi.h"
33#include "regcache.h"
34#include "target.h"
35#include "value.h"
36
37#include "gdb_assert.h"
38#include "gdb_string.h"
39
40#include "sparc64-tdep.h"
41
b021a221 42/* This file implements the SPARC 64-bit ABI as defined by the
8b39fe56
MK		 43 section "Low-Level System Information" of the SPARC Compliance
44 Definition (SCD) 2.4.1, which is the 64-bit System V psABI for
45 SPARC. */
46
47/* Please use the sparc32_-prefix for 32-bit specific code, the
48 sparc64_-prefix for 64-bit specific code and the sparc_-prefix for
49 code can handle both. */
8b39fe56
MK		 50\f
51/* The functions on this page are intended to be used to classify
52 function arguments. */
53
8b39fe56
MK		 54/* Check whether TYPE is "Integral or Pointer". */
55
56static int
57sparc64_integral_or_pointer_p (const struct type *type)
58{
59 switch (TYPE_CODE (type))
60 {
61 case TYPE_CODE_INT:
62 case TYPE_CODE_BOOL:
63 case TYPE_CODE_CHAR:
64 case TYPE_CODE_ENUM:
65 case TYPE_CODE_RANGE:
66 {
67 int len = TYPE_LENGTH (type);
68 gdb_assert (len == 1 || len == 2 || len == 4 || len == 8);
69 }
70 return 1;
71 case TYPE_CODE_PTR:
72 case TYPE_CODE_REF:
73 {
74 int len = TYPE_LENGTH (type);
75 gdb_assert (len == 8);
76 }
77 return 1;
78 default:
79 break;
80 }
81
82 return 0;
83}
84
85/* Check whether TYPE is "Floating". */
86
87static int
88sparc64_floating_p (const struct type *type)
89{
90 switch (TYPE_CODE (type))
91 {
92 case TYPE_CODE_FLT:
93 {
94 int len = TYPE_LENGTH (type);
95 gdb_assert (len == 4 || len == 8 || len == 16);
96 }
97 return 1;
98 default:
99 break;
100 }
101
102 return 0;
103}
104
fe10a582
DM		 105/* Check whether TYPE is "Complex Floating". */
106
107static int
108sparc64_complex_floating_p (const struct type *type)
109{
110 switch (TYPE_CODE (type))
111 {
112 case TYPE_CODE_COMPLEX:
113 {
114 int len = TYPE_LENGTH (type);
115 gdb_assert (len == 8 || len == 16 || len == 32);
116 }
117 return 1;
118 default:
119 break;
120 }
121
122 return 0;
123}
124
0497f5b0
JB		 125/* Check whether TYPE is "Structure or Union".
126
127 In terms of Ada subprogram calls, arrays are treated the same as
128 struct and union types. So this function also returns non-zero
129 for array types. */
8b39fe56
MK		 130
131static int
132sparc64_structure_or_union_p (const struct type *type)
133{
134 switch (TYPE_CODE (type))
135 {
136 case TYPE_CODE_STRUCT:
137 case TYPE_CODE_UNION:
0497f5b0 138 case TYPE_CODE_ARRAY:
8b39fe56
MK		 139 return 1;
140 default:
141 break;
142 }
143
144 return 0;
145}
fd936806
MK		 146\f
147
209bd28e 148/* Construct types for ISA-specific registers. */
fd936806 149
209bd28e
UW		 150static struct type *
151sparc64_pstate_type (struct gdbarch *gdbarch)
152{
153 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
fd936806 154
209bd28e
UW		 155 if (!tdep->sparc64_pstate_type)
156 {
157 struct type *type;
158
e9bb382b 159 type = arch_flags_type (gdbarch, "builtin_type_sparc64_pstate", 8);
209bd28e
UW		 160 append_flags_type_flag (type, 0, "AG");
161 append_flags_type_flag (type, 1, "IE");
162 append_flags_type_flag (type, 2, "PRIV");
163 append_flags_type_flag (type, 3, "AM");
164 append_flags_type_flag (type, 4, "PEF");
165 append_flags_type_flag (type, 5, "RED");
166 append_flags_type_flag (type, 8, "TLE");
167 append_flags_type_flag (type, 9, "CLE");
168 append_flags_type_flag (type, 10, "PID0");
169 append_flags_type_flag (type, 11, "PID1");
170
171 tdep->sparc64_pstate_type = type;
172 }
fd936806 173
209bd28e
UW		 174 return tdep->sparc64_pstate_type;
175}
fd936806 176
209bd28e
UW		 177static struct type *
178sparc64_fsr_type (struct gdbarch *gdbarch)
179{
180 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
181
182 if (!tdep->sparc64_fsr_type)
183 {
184 struct type *type;
185
e9bb382b 186 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fsr", 8);
209bd28e
UW		 187 append_flags_type_flag (type, 0, "NXA");
188 append_flags_type_flag (type, 1, "DZA");
189 append_flags_type_flag (type, 2, "UFA");
190 append_flags_type_flag (type, 3, "OFA");
191 append_flags_type_flag (type, 4, "NVA");
192 append_flags_type_flag (type, 5, "NXC");
193 append_flags_type_flag (type, 6, "DZC");
194 append_flags_type_flag (type, 7, "UFC");
195 append_flags_type_flag (type, 8, "OFC");
196 append_flags_type_flag (type, 9, "NVC");
197 append_flags_type_flag (type, 22, "NS");
198 append_flags_type_flag (type, 23, "NXM");
199 append_flags_type_flag (type, 24, "DZM");
200 append_flags_type_flag (type, 25, "UFM");
201 append_flags_type_flag (type, 26, "OFM");
202 append_flags_type_flag (type, 27, "NVM");
203
204 tdep->sparc64_fsr_type = type;
205 }
206
207 return tdep->sparc64_fsr_type;
208}
209
210static struct type *
211sparc64_fprs_type (struct gdbarch *gdbarch)
fd936806 212{
209bd28e
UW		 213 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
214
215 if (!tdep->sparc64_fprs_type)
216 {
217 struct type *type;
218
e9bb382b 219 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fprs", 8);
209bd28e
UW		 220 append_flags_type_flag (type, 0, "DL");
221 append_flags_type_flag (type, 1, "DU");
222 append_flags_type_flag (type, 2, "FEF");
223
224 tdep->sparc64_fprs_type = type;
225 }
226
227 return tdep->sparc64_fprs_type;
fd936806 228}
8b39fe56 229
209bd28e 230
8b39fe56
MK		 231/* Register information. */
232
6707b003 233static const char *sparc64_register_names[] =
8b39fe56 234{
6707b003
UW		 235 "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
236 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
237 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
238 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
239
240 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
241 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
242 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
243 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
244 "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",
245 "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",
246
247 "pc", "npc",
8b39fe56 248
6707b003
UW		 249 /* FIXME: Give "state" a name until we start using register groups. */
250 "state",
251 "fsr",
252 "fprs",
253 "y",
8b39fe56
MK		 254};
255
256/* Total number of registers. */
6707b003 257#define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names)
8b39fe56
MK		 258
259/* We provide the aliases %d0..%d62 and %q0..%q60 for the floating
260 registers as "psuedo" registers. */
261
6707b003 262static const char *sparc64_pseudo_register_names[] =
8b39fe56 263{
6707b003
UW		 264 "cwp", "pstate", "asi", "ccr",
265
266 "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14",
267 "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30",
268 "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46",
269 "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62",
270
271 "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28",
272 "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60",
8b39fe56
MK		 273};
274
275/* Total number of pseudo registers. */
6707b003 276#define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names)
8b39fe56
MK		 277
278/* Return the name of register REGNUM. */
279
280static const char *
d93859e2 281sparc64_register_name (struct gdbarch *gdbarch, int regnum)
8b39fe56
MK		 282{
283 if (regnum >= 0 && regnum < SPARC64_NUM_REGS)
6707b003 284 return sparc64_register_names[regnum];
8b39fe56
MK		 285
286 if (regnum >= SPARC64_NUM_REGS
287 && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS)
6707b003 288 return sparc64_pseudo_register_names[regnum - SPARC64_NUM_REGS];
8b39fe56
MK		 289
290 return NULL;
291}
292
293/* Return the GDB type object for the "standard" data type of data in
c378eb4e 294 register REGNUM. */
8b39fe56
MK		 295
296static struct type *
297sparc64_register_type (struct gdbarch *gdbarch, int regnum)
298{
6707b003
UW		 299 /* Raw registers. */
300
301 if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM)
0dfff4cb 302 return builtin_type (gdbarch)->builtin_data_ptr;
6707b003 303 if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM)
df4df182 304 return builtin_type (gdbarch)->builtin_int64;
6707b003 305 if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
0dfff4cb 306 return builtin_type (gdbarch)->builtin_float;
6707b003 307 if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM)
0dfff4cb 308 return builtin_type (gdbarch)->builtin_double;
6707b003 309 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
0dfff4cb 310 return builtin_type (gdbarch)->builtin_func_ptr;
6707b003
UW		 311 /* This raw register contains the contents of %cwp, %pstate, %asi
312 and %ccr as laid out in a %tstate register. */
313 if (regnum == SPARC64_STATE_REGNUM)
df4df182 314 return builtin_type (gdbarch)->builtin_int64;
6707b003 315 if (regnum == SPARC64_FSR_REGNUM)
209bd28e 316 return sparc64_fsr_type (gdbarch);
6707b003 317 if (regnum == SPARC64_FPRS_REGNUM)
209bd28e 318 return sparc64_fprs_type (gdbarch);
6707b003
UW		 319 /* "Although Y is a 64-bit register, its high-order 32 bits are
320 reserved and always read as 0." */
321 if (regnum == SPARC64_Y_REGNUM)
df4df182 322 return builtin_type (gdbarch)->builtin_int64;
6707b003
UW		 323
324 /* Pseudo registers. */
325
326 if (regnum == SPARC64_CWP_REGNUM)
df4df182 327 return builtin_type (gdbarch)->builtin_int64;
6707b003 328 if (regnum == SPARC64_PSTATE_REGNUM)
209bd28e 329 return sparc64_pstate_type (gdbarch);
6707b003 330 if (regnum == SPARC64_ASI_REGNUM)
df4df182 331 return builtin_type (gdbarch)->builtin_int64;
6707b003 332 if (regnum == SPARC64_CCR_REGNUM)
df4df182 333 return builtin_type (gdbarch)->builtin_int64;
6707b003 334 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM)
0dfff4cb 335 return builtin_type (gdbarch)->builtin_double;
6707b003 336 if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM)
0dfff4cb 337 return builtin_type (gdbarch)->builtin_long_double;
6707b003
UW		 338
339 internal_error (__FILE__, __LINE__, _("invalid regnum"));
8b39fe56
MK		 340}
341
05d1431c 342static enum register_status
8b39fe56
MK		 343sparc64_pseudo_register_read (struct gdbarch *gdbarch,
344 struct regcache *regcache,
e1613aba 345 int regnum, gdb_byte *buf)
8b39fe56 346{
e17a4113 347 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
05d1431c
PA		 348 enum register_status status;
349
8b39fe56
MK		 350 gdb_assert (regnum >= SPARC64_NUM_REGS);
351
352 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
353 {
354 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
05d1431c
PA		 355 status = regcache_raw_read (regcache, regnum, buf);
356 if (status == REG_VALID)
357 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
358 return status;
8b39fe56
MK		 359 }
360 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
361 {
362 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
05d1431c 363 return regcache_raw_read (regcache, regnum, buf);
8b39fe56
MK		 364 }
365 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
366 {
367 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
05d1431c
PA		 368
369 status = regcache_raw_read (regcache, regnum, buf);
370 if (status == REG_VALID)
371 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
372 if (status == REG_VALID)
373 status = regcache_raw_read (regcache, regnum + 2, buf + 8);
374 if (status == REG_VALID)
375 status = regcache_raw_read (regcache, regnum + 3, buf + 12);
376
377 return status;
8b39fe56
MK		 378 }
379 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
380 {
381 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
05d1431c
PA		 382
383 status = regcache_raw_read (regcache, regnum, buf);
384 if (status == REG_VALID)
385 status = regcache_raw_read (regcache, regnum + 1, buf + 8);
386
387 return status;
8b39fe56
MK		 388 }
389 else if (regnum == SPARC64_CWP_REGNUM
390 || regnum == SPARC64_PSTATE_REGNUM
391 || regnum == SPARC64_ASI_REGNUM
392 || regnum == SPARC64_CCR_REGNUM)
393 {
394 ULONGEST state;
395
05d1431c
PA		 396 status = regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
397 if (status != REG_VALID)
398 return status;
399
8b39fe56
MK		 400 switch (regnum)
401 {
3567a8ea 402 case SPARC64_CWP_REGNUM:
8b39fe56
MK		 403 state = (state >> 0) & ((1 << 5) - 1);
404 break;
3567a8ea 405 case SPARC64_PSTATE_REGNUM:
8b39fe56
MK		 406 state = (state >> 8) & ((1 << 12) - 1);
407 break;
3567a8ea 408 case SPARC64_ASI_REGNUM:
8b39fe56
MK		 409 state = (state >> 24) & ((1 << 8) - 1);
410 break;
3567a8ea 411 case SPARC64_CCR_REGNUM:
8b39fe56
MK		 412 state = (state >> 32) & ((1 << 8) - 1);
413 break;
414 }
e17a4113 415 store_unsigned_integer (buf, 8, byte_order, state);
8b39fe56 416 }
05d1431c
PA		 417
418 return REG_VALID;
8b39fe56
MK		 419}
420
421static void
422sparc64_pseudo_register_write (struct gdbarch *gdbarch,
423 struct regcache *regcache,
e1613aba 424 int regnum, const gdb_byte *buf)
8b39fe56 425{
e17a4113 426 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
8b39fe56
MK		 427 gdb_assert (regnum >= SPARC64_NUM_REGS);
428
429 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
430 {
431 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
432 regcache_raw_write (regcache, regnum, buf);
e1613aba 433 regcache_raw_write (regcache, regnum + 1, buf + 4);
8b39fe56
MK		 434 }
435 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
436 {
437 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
438 regcache_raw_write (regcache, regnum, buf);
439 }
440 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
441 {
442 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
443 regcache_raw_write (regcache, regnum, buf);
e1613aba
MK		 444 regcache_raw_write (regcache, regnum + 1, buf + 4);
445 regcache_raw_write (regcache, regnum + 2, buf + 8);
446 regcache_raw_write (regcache, regnum + 3, buf + 12);
8b39fe56
MK		 447 }
448 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
449 {
450 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
451 regcache_raw_write (regcache, regnum, buf);
e1613aba 452 regcache_raw_write (regcache, regnum + 1, buf + 8);
8b39fe56 453 }
3567a8ea
MK		 454 else if (regnum == SPARC64_CWP_REGNUM
455 || regnum == SPARC64_PSTATE_REGNUM
456 || regnum == SPARC64_ASI_REGNUM
457 || regnum == SPARC64_CCR_REGNUM)
458 {
459 ULONGEST state, bits;
460
461 regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
e17a4113 462 bits = extract_unsigned_integer (buf, 8, byte_order);
3567a8ea
MK		 463 switch (regnum)
464 {
465 case SPARC64_CWP_REGNUM:
466 state |= ((bits & ((1 << 5) - 1)) << 0);
467 break;
468 case SPARC64_PSTATE_REGNUM:
469 state |= ((bits & ((1 << 12) - 1)) << 8);
470 break;
471 case SPARC64_ASI_REGNUM:
472 state |= ((bits & ((1 << 8) - 1)) << 24);
473 break;
474 case SPARC64_CCR_REGNUM:
475 state |= ((bits & ((1 << 8) - 1)) << 32);
476 break;
477 }
478 regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
479 }
8b39fe56 480}
8b39fe56
MK		 481\f
482
8b39fe56
MK		 483/* Return PC of first real instruction of the function starting at
484 START_PC. */
485
486static CORE_ADDR
6093d2eb 487sparc64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
8b39fe56
MK		 488{
489 struct symtab_and_line sal;
490 CORE_ADDR func_start, func_end;
386c036b 491 struct sparc_frame_cache cache;
8b39fe56
MK		 492
493 /* This is the preferred method, find the end of the prologue by
494 using the debugging information. */
495 if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end))
496 {
497 sal = find_pc_line (func_start, 0);
498
499 if (sal.end < func_end
500 && start_pc <= sal.end)
501 return sal.end;
502 }
503
be8626e0
MD		 504 return sparc_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffULL,
505 &cache);
8b39fe56
MK		 506}
507
508/* Normal frames. */
509
386c036b 510static struct sparc_frame_cache *
236369e7 511sparc64_frame_cache (struct frame_info *this_frame, void **this_cache)
8b39fe56 512{
236369e7 513 return sparc_frame_cache (this_frame, this_cache);
8b39fe56
MK		 514}
515
516static void
236369e7 517sparc64_frame_this_id (struct frame_info *this_frame, void **this_cache,
8b39fe56
MK		 518 struct frame_id *this_id)
519{
386c036b 520 struct sparc_frame_cache *cache =
236369e7 521 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK		 522
523 /* This marks the outermost frame. */
524 if (cache->base == 0)
525 return;
526
527 (*this_id) = frame_id_build (cache->base, cache->pc);
528}
529
236369e7
JB		 530static struct value *
531sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache,
532 int regnum)
8b39fe56 533{
e17a4113 534 struct gdbarch *gdbarch = get_frame_arch (this_frame);
386c036b 535 struct sparc_frame_cache *cache =
236369e7 536 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK		 537
538 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
539 {
236369e7 540 CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0;
8b39fe56 541
369c397b
JB		 542 regnum =
543 (cache->copied_regs_mask & 0x80) ? SPARC_I7_REGNUM : SPARC_O7_REGNUM;
236369e7
JB		 544 pc += get_frame_register_unsigned (this_frame, regnum) + 8;
545 return frame_unwind_got_constant (this_frame, regnum, pc);
8b39fe56
MK		 546 }
547
f700a364
MK		 548 /* Handle StackGhost. */
549 {
e17a4113 550 ULONGEST wcookie = sparc_fetch_wcookie (gdbarch);
f700a364
MK		 551
552 if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM)
553 {
236369e7
JB		 554 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
555 ULONGEST i7;
556
557 /* Read the value in from memory. */
558 i7 = get_frame_memory_unsigned (this_frame, addr, 8);
559 return frame_unwind_got_constant (this_frame, regnum, i7 ^ wcookie);
f700a364
MK		 560 }
561 }
562
369c397b 563 /* The previous frame's `local' and `in' registers may have been saved
8b39fe56 564 in the register save area. */
369c397b
JB		 565 if (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM
566 && (cache->saved_regs_mask & (1 << (regnum - SPARC_L0_REGNUM))))
8b39fe56 567 {
236369e7 568 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
8b39fe56 569
236369e7 570 return frame_unwind_got_memory (this_frame, regnum, addr);
8b39fe56
MK		 571 }
572
369c397b
JB		 573 /* The previous frame's `out' registers may be accessible as the current
574 frame's `in' registers. */
575 if (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM
576 && (cache->copied_regs_mask & (1 << (regnum - SPARC_O0_REGNUM))))
8b39fe56
MK		 577 regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM);
578
236369e7 579 return frame_unwind_got_register (this_frame, regnum, regnum);
8b39fe56
MK		 580}
581
582static const struct frame_unwind sparc64_frame_unwind =
583{
584 NORMAL_FRAME,
8fbca658 585 default_frame_unwind_stop_reason,
8b39fe56 586 sparc64_frame_this_id,
236369e7
JB		 587 sparc64_frame_prev_register,
588 NULL,
589 default_frame_sniffer
8b39fe56 590};
8b39fe56
MK		 591\f
592
593static CORE_ADDR
236369e7 594sparc64_frame_base_address (struct frame_info *this_frame, void **this_cache)
8b39fe56 595{
386c036b 596 struct sparc_frame_cache *cache =
236369e7 597 sparc64_frame_cache (this_frame, this_cache);
8b39fe56 598
5b2d44a0 599 return cache->base;
8b39fe56
MK		 600}
601
602static const struct frame_base sparc64_frame_base =
603{
604 &sparc64_frame_unwind,
605 sparc64_frame_base_address,
606 sparc64_frame_base_address,
607 sparc64_frame_base_address
608};
8b39fe56
MK		 609\f
610/* Check whether TYPE must be 16-byte aligned. */
611
612static int
613sparc64_16_byte_align_p (struct type *type)
614{
615 if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16)
616 return 1;
617
618 if (sparc64_structure_or_union_p (type))
619 {
620 int i;
621
622 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 623 {
624 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
625
626 if (sparc64_16_byte_align_p (subtype))
627 return 1;
628 }
8b39fe56
MK		 629 }
630
631 return 0;
632}
633
634/* Store floating fields of element ELEMENT of an "parameter array"
635 that has type TYPE and is stored at BITPOS in VALBUF in the
636 apropriate registers of REGCACHE. This function can be called
637 recursively and therefore handles floating types in addition to
638 structures. */
639
640static void
641sparc64_store_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 642 const gdb_byte *valbuf, int element, int bitpos)
8b39fe56 643{
fe10a582
DM		 644 int len = TYPE_LENGTH (type);
645
8b39fe56
MK		 646 gdb_assert (element < 16);
647
fe10a582
DM		 648 if (sparc64_floating_p (type)
649 || (sparc64_complex_floating_p (type) && len <= 16))
8b39fe56 650 {
8b39fe56
MK		 651 int regnum;
652
653 if (len == 16)
654 {
655 gdb_assert (bitpos == 0);
656 gdb_assert ((element % 2) == 0);
657
658 regnum = SPARC64_Q0_REGNUM + element / 2;
659 regcache_cooked_write (regcache, regnum, valbuf);
660 }
661 else if (len == 8)
662 {
663 gdb_assert (bitpos == 0 || bitpos == 64);
664
665 regnum = SPARC64_D0_REGNUM + element + bitpos / 64;
666 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
667 }
668 else
669 {
670 gdb_assert (len == 4);
671 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128);
672
673 regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32;
674 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
675 }
676 }
677 else if (sparc64_structure_or_union_p (type))
678 {
679 int i;
680
681 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 682 {
683 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
684 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
685
686 sparc64_store_floating_fields (regcache, subtype, valbuf,
687 element, subpos);
688 }
200cc553
MK		 689
690 /* GCC has an interesting bug. If TYPE is a structure that has
691 a single `float' member, GCC doesn't treat it as a structure
692 at all, but rather as an ordinary `float' argument. This
693 argument will be stored in %f1, as required by the psABI.
694 However, as a member of a structure the psABI requires it to
5154b0cd
MK		 695 be stored in %f0. This bug is present in GCC 3.3.2, but
696 probably in older releases to. To appease GCC, if a
697 structure has only a single `float' member, we store its
698 value in %f1 too (we already have stored in %f0). */
200cc553
MK		 699 if (TYPE_NFIELDS (type) == 1)
700 {
701 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0));
702
703 if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4)
704 regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf);
705 }
8b39fe56
MK		 706 }
707}
708
709/* Fetch floating fields from a variable of type TYPE from the
710 appropriate registers for BITPOS in REGCACHE and store it at BITPOS
711 in VALBUF. This function can be called recursively and therefore
712 handles floating types in addition to structures. */
713
714static void
715sparc64_extract_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 716 gdb_byte *valbuf, int bitpos)
8b39fe56
MK		 717{
718 if (sparc64_floating_p (type))
719 {
720 int len = TYPE_LENGTH (type);
721 int regnum;
722
723 if (len == 16)
724 {
725 gdb_assert (bitpos == 0 || bitpos == 128);
726
727 regnum = SPARC64_Q0_REGNUM + bitpos / 128;
728 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
729 }
730 else if (len == 8)
731 {
732 gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256);
733
734 regnum = SPARC64_D0_REGNUM + bitpos / 64;
735 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
736 }
737 else
738 {
739 gdb_assert (len == 4);
740 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256);
741
742 regnum = SPARC_F0_REGNUM + bitpos / 32;
743 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
744 }
745 }
746 else if (sparc64_structure_or_union_p (type))
747 {
748 int i;
749
750 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 751 {
752 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
753 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
754
755 sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos);
756 }
8b39fe56
MK		 757 }
758}
759
760/* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is
761 non-zero) in REGCACHE and on the stack (starting from address SP). */
762
763static CORE_ADDR
764sparc64_store_arguments (struct regcache *regcache, int nargs,
765 struct value **args, CORE_ADDR sp,
766 int struct_return, CORE_ADDR struct_addr)
767{
df4df182 768 struct gdbarch *gdbarch = get_regcache_arch (regcache);
8b39fe56
MK		 769 /* Number of extended words in the "parameter array". */
770 int num_elements = 0;
771 int element = 0;
772 int i;
773
774 /* Take BIAS into account. */
775 sp += BIAS;
776
777 /* First we calculate the number of extended words in the "parameter
778 array". While doing so we also convert some of the arguments. */
779
780 if (struct_return)
781 num_elements++;
782
783 for (i = 0; i < nargs; i++)
784 {
4991999e 785 struct type *type = value_type (args[i]);
8b39fe56
MK		 786 int len = TYPE_LENGTH (type);
787
788 if (sparc64_structure_or_union_p (type))
789 {
790 /* Structure or Union arguments. */
791 if (len <= 16)
792 {
793 if (num_elements % 2 && sparc64_16_byte_align_p (type))
794 num_elements++;
795 num_elements += ((len + 7) / 8);
796 }
797 else
798 {
799 /* The psABI says that "Structures or unions larger than
800 sixteen bytes are copied by the caller and passed
801 indirectly; the caller will pass the address of a
802 correctly aligned structure value. This sixty-four
803 bit address will occupy one word in the parameter
804 array, and may be promoted to an %o register like any
805 other pointer value." Allocate memory for these
806 values on the stack. */
807 sp -= len;
808
809 /* Use 16-byte alignment for these values. That's
810 always correct, and wasting a few bytes shouldn't be
811 a problem. */
812 sp &= ~0xf;
813
0fd88904 814 write_memory (sp, value_contents (args[i]), len);
8b39fe56
MK		 815 args[i] = value_from_pointer (lookup_pointer_type (type), sp);
816 num_elements++;
817 }
818 }
819 else if (sparc64_floating_p (type))
820 {
821 /* Floating arguments. */
822
823 if (len == 16)
824 {
825 /* The psABI says that "Each quad-precision parameter
826 value will be assigned to two extended words in the
827 parameter array. */
828 num_elements += 2;
829
830 /* The psABI says that "Long doubles must be
831 quad-aligned, and thus a hole might be introduced
832 into the parameter array to force alignment." Skip
833 an element if necessary. */
834 if (num_elements % 2)
835 num_elements++;
836 }
837 else
838 num_elements++;
839 }
840 else
841 {
842 /* Integral and pointer arguments. */
843 gdb_assert (sparc64_integral_or_pointer_p (type));
844
845 /* The psABI says that "Each argument value of integral type
846 smaller than an extended word will be widened by the
847 caller to an extended word according to the signed-ness
848 of the argument type." */
849 if (len < 8)
df4df182
UW		 850 args[i] = value_cast (builtin_type (gdbarch)->builtin_int64,
851 args[i]);
8b39fe56
MK		 852 num_elements++;
853 }
854 }
855
856 /* Allocate the "parameter array". */
857 sp -= num_elements * 8;
858
859 /* The psABI says that "Every stack frame must be 16-byte aligned." */
860 sp &= ~0xf;
861
862 /* Now we store the arguments in to the "paramater array". Some
863 Integer or Pointer arguments and Structure or Union arguments
864 will be passed in %o registers. Some Floating arguments and
865 floating members of structures are passed in floating-point
866 registers. However, for functions with variable arguments,
867 floating arguments are stored in an %0 register, and for
868 functions without a prototype floating arguments are stored in
869 both a floating-point and an %o registers, or a floating-point
870 register and memory. To simplify the logic here we always pass
871 arguments in memory, an %o register, and a floating-point
872 register if appropriate. This should be no problem since the
873 contents of any unused memory or registers in the "parameter
874 array" are undefined. */
875
876 if (struct_return)
877 {
878 regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr);
879 element++;
880 }
881
882 for (i = 0; i < nargs; i++)
883 {
e1613aba 884 const gdb_byte *valbuf = value_contents (args[i]);
4991999e 885 struct type *type = value_type (args[i]);
8b39fe56
MK		 886 int len = TYPE_LENGTH (type);
887 int regnum = -1;
e1613aba 888 gdb_byte buf[16];
8b39fe56
MK		 889
890 if (sparc64_structure_or_union_p (type))
891 {
892 /* Structure or Union arguments. */
893 gdb_assert (len <= 16);
894 memset (buf, 0, sizeof (buf));
895 valbuf = memcpy (buf, valbuf, len);
896
897 if (element % 2 && sparc64_16_byte_align_p (type))
898 element++;
899
900 if (element < 6)
901 {
902 regnum = SPARC_O0_REGNUM + element;
903 if (len > 8 && element < 5)
904 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
905 }
906
907 if (element < 16)
908 sparc64_store_floating_fields (regcache, type, valbuf, element, 0);
909 }
fe10a582 910 else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type))
8b39fe56
MK		 911 {
912 /* Floating arguments. */
913 if (len == 16)
914 {
915 if (element % 2)
916 element++;
917 if (element < 16)
918 regnum = SPARC64_Q0_REGNUM + element / 2;
919 }
920 else if (len == 8)
921 {
922 if (element < 16)
923 regnum = SPARC64_D0_REGNUM + element;
924 }
fe10a582 925 else if (len == 4)
8b39fe56
MK		 926 {
927 /* The psABI says "Each single-precision parameter value
928 will be assigned to one extended word in the
929 parameter array, and right-justified within that
930 word; the left half (even floatregister) is
931 undefined." Even though the psABI says that "the
932 left half is undefined", set it to zero here. */
933 memset (buf, 0, 4);
8ada74e3
MK		 934 memcpy (buf + 4, valbuf, 4);
935 valbuf = buf;
8b39fe56
MK		 936 len = 8;
937 if (element < 16)
8ada74e3 938 regnum = SPARC64_D0_REGNUM + element;
8b39fe56
MK		 939 }
940 }
941 else
942 {
943 /* Integral and pointer arguments. */
944 gdb_assert (len == 8);
945 if (element < 6)
946 regnum = SPARC_O0_REGNUM + element;
947 }
948
949 if (regnum != -1)
950 {
951 regcache_cooked_write (regcache, regnum, valbuf);
952
953 /* If we're storing the value in a floating-point register,
954 also store it in the corresponding %0 register(s). */
955 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM)
956 {
957 gdb_assert (element < 6);
958 regnum = SPARC_O0_REGNUM + element;
959 regcache_cooked_write (regcache, regnum, valbuf);
960 }
961 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM)
962 {
963 gdb_assert (element < 6);
964 regnum = SPARC_O0_REGNUM + element;
965 regcache_cooked_write (regcache, regnum, valbuf);
d47079be 966 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
8b39fe56
MK		 967 }
968 }
969
c4f2d4d7 970 /* Always store the argument in memory. */
8b39fe56
MK		 971 write_memory (sp + element * 8, valbuf, len);
972 element += ((len + 7) / 8);
973 }
974
975 gdb_assert (element == num_elements);
976
977 /* Take BIAS into account. */
978 sp -= BIAS;
979 return sp;
980}
981
49a45ecf
JB		 982static CORE_ADDR
983sparc64_frame_align (struct gdbarch *gdbarch, CORE_ADDR address)
984{
985 /* The ABI requires 16-byte alignment. */
986 return address & ~0xf;
987}
988
8b39fe56 989static CORE_ADDR
7d9b040b 990sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
8b39fe56
MK		 991 struct regcache *regcache, CORE_ADDR bp_addr,
992 int nargs, struct value **args, CORE_ADDR sp,
993 int struct_return, CORE_ADDR struct_addr)
994{
995 /* Set return address. */
996 regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8);
997
998 /* Set up function arguments. */
999 sp = sparc64_store_arguments (regcache, nargs, args, sp,
1000 struct_return, struct_addr);
1001
1002 /* Allocate the register save area. */
1003 sp -= 16 * 8;
1004
1005 /* Stack should be 16-byte aligned at this point. */
3567a8ea 1006 gdb_assert ((sp + BIAS) % 16 == 0);
8b39fe56
MK		 1007
1008 /* Finally, update the stack pointer. */
1009 regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp);
1010
5b2d44a0 1011 return sp + BIAS;
8b39fe56
MK		 1012}
1013\f
1014
1015/* Extract from an array REGBUF containing the (raw) register state, a
1016 function return value of TYPE, and copy that into VALBUF. */
1017
1018static void
1019sparc64_extract_return_value (struct type *type, struct regcache *regcache,
e1613aba 1020 gdb_byte *valbuf)
8b39fe56
MK		 1021{
1022 int len = TYPE_LENGTH (type);
e1613aba 1023 gdb_byte buf[32];
8b39fe56
MK		 1024 int i;
1025
1026 if (sparc64_structure_or_union_p (type))
1027 {
1028 /* Structure or Union return values. */
1029 gdb_assert (len <= 32);
1030
1031 for (i = 0; i < ((len + 7) / 8); i++)
1032 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1033 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1034 sparc64_extract_floating_fields (regcache, type, buf, 0);
1035 memcpy (valbuf, buf, len);
1036 }
1037 else if (sparc64_floating_p (type))
1038 {
1039 /* Floating return values. */
1040 for (i = 0; i < len / 4; i++)
1041 regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1042 memcpy (valbuf, buf, len);
1043 }
4bd87714
JB		 1044 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1045 {
1046 /* Small arrays are returned the same way as small structures. */
1047 gdb_assert (len <= 32);
1048
1049 for (i = 0; i < ((len + 7) / 8); i++)
1050 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1051 memcpy (valbuf, buf, len);
1052 }
8b39fe56
MK		 1053 else
1054 {
1055 /* Integral and pointer return values. */
1056 gdb_assert (sparc64_integral_or_pointer_p (type));
1057
1058 /* Just stripping off any unused bytes should preserve the
1059 signed-ness just fine. */
1060 regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf);
1061 memcpy (valbuf, buf + 8 - len, len);
1062 }
1063}
1064
1065/* Write into the appropriate registers a function return value stored
1066 in VALBUF of type TYPE. */
1067
1068static void
1069sparc64_store_return_value (struct type *type, struct regcache *regcache,
e1613aba 1070 const gdb_byte *valbuf)
8b39fe56
MK		 1071{
1072 int len = TYPE_LENGTH (type);
e1613aba 1073 gdb_byte buf[16];
8b39fe56
MK		 1074 int i;
1075
1076 if (sparc64_structure_or_union_p (type))
1077 {
1078 /* Structure or Union return values. */
1079 gdb_assert (len <= 32);
1080
1081 /* Simplify matters by storing the complete value (including
1082 floating members) into %o0 and %o1. Floating members are
1083 also store in the appropriate floating-point registers. */
1084 memset (buf, 0, sizeof (buf));
1085 memcpy (buf, valbuf, len);
1086 for (i = 0; i < ((len + 7) / 8); i++)
60af1db2 1087 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
8b39fe56
MK		 1088 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1089 sparc64_store_floating_fields (regcache, type, buf, 0, 0);
1090 }
fe10a582 1091 else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type))
8b39fe56
MK		 1092 {
1093 /* Floating return values. */
1094 memcpy (buf, valbuf, len);
1095 for (i = 0; i < len / 4; i++)
1096 regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1097 }
4bd87714
JB		 1098 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1099 {
1100 /* Small arrays are returned the same way as small structures. */
1101 gdb_assert (len <= 32);
1102
1103 memset (buf, 0, sizeof (buf));
1104 memcpy (buf, valbuf, len);
1105 for (i = 0; i < ((len + 7) / 8); i++)
1106 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1107 }
8b39fe56
MK		 1108 else
1109 {
1110 /* Integral and pointer return values. */
1111 gdb_assert (sparc64_integral_or_pointer_p (type));
1112
1113 /* ??? Do we need to do any sign-extension here? */
1114 memset (buf, 0, 8);
1115 memcpy (buf + 8 - len, valbuf, len);
1116 regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf);
1117 }
1118}
1119
60af1db2 1120static enum return_value_convention
c055b101
CV		 1121sparc64_return_value (struct gdbarch *gdbarch, struct type *func_type,
1122 struct type *type, struct regcache *regcache,
1123 gdb_byte *readbuf, const gdb_byte *writebuf)
8b39fe56 1124{
60af1db2
MK		 1125 if (TYPE_LENGTH (type) > 32)
1126 return RETURN_VALUE_STRUCT_CONVENTION;
1127
1128 if (readbuf)
1129 sparc64_extract_return_value (type, regcache, readbuf);
1130 if (writebuf)
1131 sparc64_store_return_value (type, regcache, writebuf);
1132
1133 return RETURN_VALUE_REGISTER_CONVENTION;
8b39fe56 1134}
8b39fe56 1135\f
8b39fe56 1136
02a71ae8
MK		 1137static void
1138sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
aff37fc1 1139 struct dwarf2_frame_state_reg *reg,
4a4e5149 1140 struct frame_info *this_frame)
02a71ae8
MK		 1141{
1142 switch (regnum)
1143 {
1144 case SPARC_G0_REGNUM:
1145 /* Since %g0 is always zero, there is no point in saving it, and
1146 people will be inclined omit it from the CFI. Make sure we
1147 don't warn about that. */
1148 reg->how = DWARF2_FRAME_REG_SAME_VALUE;
1149 break;
1150 case SPARC_SP_REGNUM:
1151 reg->how = DWARF2_FRAME_REG_CFA;
1152 break;
1153 case SPARC64_PC_REGNUM:
1154 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1155 reg->loc.offset = 8;
1156 break;
1157 case SPARC64_NPC_REGNUM:
1158 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1159 reg->loc.offset = 12;
1160 break;
1161 }
1162}
1163
8b39fe56 1164void
386c036b 1165sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
8b39fe56 1166{
386c036b 1167 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
8b39fe56 1168
386c036b
MK		 1169 tdep->pc_regnum = SPARC64_PC_REGNUM;
1170 tdep->npc_regnum = SPARC64_NPC_REGNUM;
8b39fe56 1171
386c036b 1172 /* This is what all the fuss is about. */
8b39fe56
MK		 1173 set_gdbarch_long_bit (gdbarch, 64);
1174 set_gdbarch_long_long_bit (gdbarch, 64);
1175 set_gdbarch_ptr_bit (gdbarch, 64);
8b39fe56
MK		 1176
1177 set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS);
1178 set_gdbarch_register_name (gdbarch, sparc64_register_name);
1179 set_gdbarch_register_type (gdbarch, sparc64_register_type);
1180 set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS);
1181 set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read);
1182 set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write);
1183
1184 /* Register numbers of various important registers. */
8b39fe56 1185 set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */
8b39fe56
MK		 1186
1187 /* Call dummy code. */
49a45ecf 1188 set_gdbarch_frame_align (gdbarch, sparc64_frame_align);
386c036b
MK		 1189 set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
1190 set_gdbarch_push_dummy_code (gdbarch, NULL);
8b39fe56
MK		 1191 set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call);
1192
60af1db2 1193 set_gdbarch_return_value (gdbarch, sparc64_return_value);
386c036b
MK		 1194 set_gdbarch_stabs_argument_has_addr
1195 (gdbarch, default_stabs_argument_has_addr);
8b39fe56
MK		 1196
1197 set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue);
1198
02a71ae8
MK		 1199 /* Hook in the DWARF CFI frame unwinder. */
1200 dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg);
1201 /* FIXME: kettenis/20050423: Don't enable the unwinder until the
1202 StackGhost issues have been resolved. */
1203
236369e7 1204 frame_unwind_append_unwinder (gdbarch, &sparc64_frame_unwind);
8b39fe56 1205 frame_base_set_default (gdbarch, &sparc64_frame_base);
386c036b
MK		 1206}
1207\f
8b39fe56 1208
386c036b 1209/* Helper functions for dealing with register sets. */
8b39fe56 1210
386c036b
MK		 1211#define TSTATE_CWP 0x000000000000001fULL
1212#define TSTATE_ICC 0x0000000f00000000ULL
1213#define TSTATE_XCC 0x000000f000000000ULL
8b39fe56 1214
386c036b
MK		 1215#define PSR_S 0x00000080
1216#define PSR_ICC 0x00f00000
1217#define PSR_VERS 0x0f000000
1218#define PSR_IMPL 0xf0000000
1219#define PSR_V8PLUS 0xff000000
1220#define PSR_XCC 0x000f0000
8b39fe56 1221
3567a8ea 1222void
386c036b
MK		 1223sparc64_supply_gregset (const struct sparc_gregset *gregset,
1224 struct regcache *regcache,
1225 int regnum, const void *gregs)
8b39fe56 1226{
e17a4113
UW		 1227 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1228 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1229 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
e1613aba 1230 const gdb_byte *regs = gregs;
22e74ef9 1231 gdb_byte zero[8] = { 0 };
8b39fe56
MK		 1232 int i;
1233
386c036b 1234 if (sparc32)
8b39fe56 1235 {
386c036b
MK		 1236 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1237 {
1238 int offset = gregset->r_tstate_offset;
1239 ULONGEST tstate, psr;
e1613aba 1240 gdb_byte buf[4];
386c036b 1241
e17a4113 1242 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b
MK		 1243 psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12)
1244 | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS);
e17a4113 1245 store_unsigned_integer (buf, 4, byte_order, psr);
386c036b
MK		 1246 regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf);
1247 }
1248
1249 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1250 regcache_raw_supply (regcache, SPARC32_PC_REGNUM,
1251 regs + gregset->r_pc_offset + 4);
1252
1253 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1254 regcache_raw_supply (regcache, SPARC32_NPC_REGNUM,
1255 regs + gregset->r_npc_offset + 4);
8b39fe56 1256
386c036b 1257 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1258 {
386c036b
MK		 1259 int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
1260 regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK		 1261 }
1262 }
1263 else
1264 {
386c036b
MK		 1265 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1266 regcache_raw_supply (regcache, SPARC64_STATE_REGNUM,
1267 regs + gregset->r_tstate_offset);
8b39fe56 1268
386c036b
MK		 1269 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1270 regcache_raw_supply (regcache, SPARC64_PC_REGNUM,
1271 regs + gregset->r_pc_offset);
1272
1273 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1274 regcache_raw_supply (regcache, SPARC64_NPC_REGNUM,
1275 regs + gregset->r_npc_offset);
1276
1277 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1278 {
e1613aba 1279 gdb_byte buf[8];
386c036b
MK		 1280
1281 memset (buf, 0, 8);
1282 memcpy (buf + 8 - gregset->r_y_size,
1283 regs + gregset->r_y_offset, gregset->r_y_size);
1284 regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf);
3567a8ea 1285 }
8b39fe56 1286
386c036b
MK		 1287 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
1288 && gregset->r_fprs_offset != -1)
1289 regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM,
1290 regs + gregset->r_fprs_offset);
1291 }
1292
1293 if (regnum == SPARC_G0_REGNUM || regnum == -1)
22e74ef9 1294 regcache_raw_supply (regcache, SPARC_G0_REGNUM, &zero);
386c036b
MK		 1295
1296 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1297 {
1298 int offset = gregset->r_g1_offset;
1299
1300 if (sparc32)
1301 offset += 4;
1302
1303 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
8b39fe56 1304 {
3567a8ea 1305 if (regnum == i || regnum == -1)
386c036b
MK		 1306 regcache_raw_supply (regcache, i, regs + offset);
1307 offset += 8;
1308 }
1309 }
1310
1311 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1312 {
1313 /* Not all of the register set variants include Locals and
1314 Inputs. For those that don't, we read them off the stack. */
1315 if (gregset->r_l0_offset == -1)
1316 {
1317 ULONGEST sp;
1318
1319 regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
1320 sparc_supply_rwindow (regcache, sp, regnum);
1321 }
1322 else
1323 {
1324 int offset = gregset->r_l0_offset;
1325
1326 if (sparc32)
1327 offset += 4;
1328
1329 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1330 {
386c036b
MK		 1331 if (regnum == i || regnum == -1)
1332 regcache_raw_supply (regcache, i, regs + offset);
1333 offset += 8;
3567a8ea 1334 }
8b39fe56
MK		 1335 }
1336 }
1337}
1338
1339void
386c036b
MK		 1340sparc64_collect_gregset (const struct sparc_gregset *gregset,
1341 const struct regcache *regcache,
1342 int regnum, void *gregs)
8b39fe56 1343{
e17a4113
UW		 1344 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1345 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1346 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
e1613aba 1347 gdb_byte *regs = gregs;
3567a8ea
MK		 1348 int i;
1349
386c036b 1350 if (sparc32)
8b39fe56 1351 {
386c036b
MK		 1352 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1353 {
1354 int offset = gregset->r_tstate_offset;
1355 ULONGEST tstate, psr;
e1613aba 1356 gdb_byte buf[8];
386c036b 1357
e17a4113 1358 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b 1359 regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf);
e17a4113 1360 psr = extract_unsigned_integer (buf, 4, byte_order);
386c036b
MK		 1361 tstate |= (psr & PSR_ICC) << 12;
1362 if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS)
1363 tstate |= (psr & PSR_XCC) << 20;
e17a4113 1364 store_unsigned_integer (buf, 8, byte_order, tstate);
386c036b
MK		 1365 memcpy (regs + offset, buf, 8);
1366 }
8b39fe56 1367
386c036b
MK		 1368 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1369 regcache_raw_collect (regcache, SPARC32_PC_REGNUM,
1370 regs + gregset->r_pc_offset + 4);
1371
1372 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1373 regcache_raw_collect (regcache, SPARC32_NPC_REGNUM,
1374 regs + gregset->r_npc_offset + 4);
1375
1376 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1377 {
386c036b
MK		 1378 int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
1379 regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK		 1380 }
1381 }
1382 else
1383 {
386c036b
MK		 1384 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1385 regcache_raw_collect (regcache, SPARC64_STATE_REGNUM,
1386 regs + gregset->r_tstate_offset);
1387
1388 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1389 regcache_raw_collect (regcache, SPARC64_PC_REGNUM,
1390 regs + gregset->r_pc_offset);
3567a8ea 1391
386c036b
MK		 1392 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1393 regcache_raw_collect (regcache, SPARC64_NPC_REGNUM,
1394 regs + gregset->r_npc_offset);
3567a8ea 1395
386c036b 1396 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1397 {
e1613aba 1398 gdb_byte buf[8];
386c036b
MK		 1399
1400 regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf);
1401 memcpy (regs + gregset->r_y_offset,
1402 buf + 8 - gregset->r_y_size, gregset->r_y_size);
1403 }
1404
1405 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
1406 && gregset->r_fprs_offset != -1)
1407 regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM,
1408 regs + gregset->r_fprs_offset);
1409
1410 }
1411
1412 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1413 {
1414 int offset = gregset->r_g1_offset;
1415
1416 if (sparc32)
1417 offset += 4;
1418
1419 /* %g0 is always zero. */
1420 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
1421 {
1422 if (regnum == i || regnum == -1)
1423 regcache_raw_collect (regcache, i, regs + offset);
1424 offset += 8;
1425 }
1426 }
1427
1428 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1429 {
1430 /* Not all of the register set variants include Locals and
1431 Inputs. For those that don't, we read them off the stack. */
1432 if (gregset->r_l0_offset != -1)
1433 {
1434 int offset = gregset->r_l0_offset;
1435
1436 if (sparc32)
1437 offset += 4;
1438
1439 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1440 {
386c036b
MK		 1441 if (regnum == i || regnum == -1)
1442 regcache_raw_collect (regcache, i, regs + offset);
1443 offset += 8;
3567a8ea
MK		 1444 }
1445 }
8b39fe56
MK		 1446 }
1447}
8b39fe56 1448
386c036b
MK		 1449void
1450sparc64_supply_fpregset (struct regcache *regcache,
1451 int regnum, const void *fpregs)
1452{
e6d4f032 1453 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
e1613aba 1454 const gdb_byte *regs = fpregs;
386c036b
MK		 1455 int i;
1456
1457 for (i = 0; i < 32; i++)
1458 {
1459 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
1460 regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
1461 }
1462
1463 if (sparc32)
1464 {
1465 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1466 regcache_raw_supply (regcache, SPARC32_FSR_REGNUM,
1467 regs + (32 * 4) + (16 * 8) + 4);
1468 }
1469 else
1470 {
1471 for (i = 0; i < 16; i++)
1472 {
1473 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1474 regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i,
1475 regs + (32 * 4) + (i * 8));
1476 }
1477
1478 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1479 regcache_raw_supply (regcache, SPARC64_FSR_REGNUM,
1480 regs + (32 * 4) + (16 * 8));
1481 }
1482}
8b39fe56
MK		 1483
1484void
386c036b
MK		 1485sparc64_collect_fpregset (const struct regcache *regcache,
1486 int regnum, void *fpregs)
8b39fe56 1487{
e6d4f032 1488 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
e1613aba 1489 gdb_byte *regs = fpregs;
386c036b
MK		 1490 int i;
1491
1492 for (i = 0; i < 32; i++)
1493 {
1494 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
1495 regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
1496 }
1497
1498 if (sparc32)
1499 {
1500 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1501 regcache_raw_collect (regcache, SPARC32_FSR_REGNUM,
1502 regs + (32 * 4) + (16 * 8) + 4);
1503 }
1504 else
1505 {
1506 for (i = 0; i < 16; i++)
1507 {
1508 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1509 regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i,
1510 regs + (32 * 4) + (i * 8));
1511 }
1512
1513 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1514 regcache_raw_collect (regcache, SPARC64_FSR_REGNUM,
1515 regs + (32 * 4) + (16 * 8));
1516 }
8b39fe56 1517}
fd936806 1518
GDB Binutils - Deliverables
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