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2011-04-20 Pedro Alves <[email protected]>
[binutils.git] / gdb / sparc64-tdep.c
CommitLineData
8b39fe56
MK		 1/* Target-dependent code for UltraSPARC.
2
7b6bb8da 3 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
9b254dd1 4 Free Software Foundation, Inc.
8b39fe56
MK		 5
6 This file is part of GDB.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
a9762ec7 10 the Free Software Foundation; either version 3 of the License, or
8b39fe56
MK		 11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
a9762ec7 19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
8b39fe56
MK		 20
21#include "defs.h"
22#include "arch-utils.h"
02a71ae8 23#include "dwarf2-frame.h"
8b39fe56
MK		 24#include "floatformat.h"
25#include "frame.h"
26#include "frame-base.h"
27#include "frame-unwind.h"
28#include "gdbcore.h"
29#include "gdbtypes.h"
386c036b
MK		 30#include "inferior.h"
31#include "symtab.h"
32#include "objfiles.h"
8b39fe56
MK		 33#include "osabi.h"
34#include "regcache.h"
35#include "target.h"
36#include "value.h"
37
38#include "gdb_assert.h"
39#include "gdb_string.h"
40
41#include "sparc64-tdep.h"
42
b021a221 43/* This file implements the SPARC 64-bit ABI as defined by the
8b39fe56
MK		 44 section "Low-Level System Information" of the SPARC Compliance
45 Definition (SCD) 2.4.1, which is the 64-bit System V psABI for
46 SPARC. */
47
48/* Please use the sparc32_-prefix for 32-bit specific code, the
49 sparc64_-prefix for 64-bit specific code and the sparc_-prefix for
50 code can handle both. */
8b39fe56
MK		 51\f
52/* The functions on this page are intended to be used to classify
53 function arguments. */
54
8b39fe56
MK		 55/* Check whether TYPE is "Integral or Pointer". */
56
57static int
58sparc64_integral_or_pointer_p (const struct type *type)
59{
60 switch (TYPE_CODE (type))
61 {
62 case TYPE_CODE_INT:
63 case TYPE_CODE_BOOL:
64 case TYPE_CODE_CHAR:
65 case TYPE_CODE_ENUM:
66 case TYPE_CODE_RANGE:
67 {
68 int len = TYPE_LENGTH (type);
69 gdb_assert (len == 1 || len == 2 || len == 4 || len == 8);
70 }
71 return 1;
72 case TYPE_CODE_PTR:
73 case TYPE_CODE_REF:
74 {
75 int len = TYPE_LENGTH (type);
76 gdb_assert (len == 8);
77 }
78 return 1;
79 default:
80 break;
81 }
82
83 return 0;
84}
85
86/* Check whether TYPE is "Floating". */
87
88static int
89sparc64_floating_p (const struct type *type)
90{
91 switch (TYPE_CODE (type))
92 {
93 case TYPE_CODE_FLT:
94 {
95 int len = TYPE_LENGTH (type);
96 gdb_assert (len == 4 || len == 8 || len == 16);
97 }
98 return 1;
99 default:
100 break;
101 }
102
103 return 0;
104}
105
0497f5b0
JB		 106/* Check whether TYPE is "Structure or Union".
107
108 In terms of Ada subprogram calls, arrays are treated the same as
109 struct and union types. So this function also returns non-zero
110 for array types. */
8b39fe56
MK		 111
112static int
113sparc64_structure_or_union_p (const struct type *type)
114{
115 switch (TYPE_CODE (type))
116 {
117 case TYPE_CODE_STRUCT:
118 case TYPE_CODE_UNION:
0497f5b0 119 case TYPE_CODE_ARRAY:
8b39fe56
MK		 120 return 1;
121 default:
122 break;
123 }
124
125 return 0;
126}
fd936806
MK		 127\f
128
209bd28e 129/* Construct types for ISA-specific registers. */
fd936806 130
209bd28e
UW		 131static struct type *
132sparc64_pstate_type (struct gdbarch *gdbarch)
133{
134 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
fd936806 135
209bd28e
UW		 136 if (!tdep->sparc64_pstate_type)
137 {
138 struct type *type;
139
e9bb382b 140 type = arch_flags_type (gdbarch, "builtin_type_sparc64_pstate", 8);
209bd28e
UW		 141 append_flags_type_flag (type, 0, "AG");
142 append_flags_type_flag (type, 1, "IE");
143 append_flags_type_flag (type, 2, "PRIV");
144 append_flags_type_flag (type, 3, "AM");
145 append_flags_type_flag (type, 4, "PEF");
146 append_flags_type_flag (type, 5, "RED");
147 append_flags_type_flag (type, 8, "TLE");
148 append_flags_type_flag (type, 9, "CLE");
149 append_flags_type_flag (type, 10, "PID0");
150 append_flags_type_flag (type, 11, "PID1");
151
152 tdep->sparc64_pstate_type = type;
153 }
fd936806 154
209bd28e
UW		 155 return tdep->sparc64_pstate_type;
156}
fd936806 157
209bd28e
UW		 158static struct type *
159sparc64_fsr_type (struct gdbarch *gdbarch)
160{
161 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
162
163 if (!tdep->sparc64_fsr_type)
164 {
165 struct type *type;
166
e9bb382b 167 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fsr", 8);
209bd28e
UW		 168 append_flags_type_flag (type, 0, "NXA");
169 append_flags_type_flag (type, 1, "DZA");
170 append_flags_type_flag (type, 2, "UFA");
171 append_flags_type_flag (type, 3, "OFA");
172 append_flags_type_flag (type, 4, "NVA");
173 append_flags_type_flag (type, 5, "NXC");
174 append_flags_type_flag (type, 6, "DZC");
175 append_flags_type_flag (type, 7, "UFC");
176 append_flags_type_flag (type, 8, "OFC");
177 append_flags_type_flag (type, 9, "NVC");
178 append_flags_type_flag (type, 22, "NS");
179 append_flags_type_flag (type, 23, "NXM");
180 append_flags_type_flag (type, 24, "DZM");
181 append_flags_type_flag (type, 25, "UFM");
182 append_flags_type_flag (type, 26, "OFM");
183 append_flags_type_flag (type, 27, "NVM");
184
185 tdep->sparc64_fsr_type = type;
186 }
187
188 return tdep->sparc64_fsr_type;
189}
190
191static struct type *
192sparc64_fprs_type (struct gdbarch *gdbarch)
fd936806 193{
209bd28e
UW		 194 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
195
196 if (!tdep->sparc64_fprs_type)
197 {
198 struct type *type;
199
e9bb382b 200 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fprs", 8);
209bd28e
UW		 201 append_flags_type_flag (type, 0, "DL");
202 append_flags_type_flag (type, 1, "DU");
203 append_flags_type_flag (type, 2, "FEF");
204
205 tdep->sparc64_fprs_type = type;
206 }
207
208 return tdep->sparc64_fprs_type;
fd936806 209}
8b39fe56 210
209bd28e 211
8b39fe56
MK		 212/* Register information. */
213
6707b003 214static const char *sparc64_register_names[] =
8b39fe56 215{
6707b003
UW		 216 "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
217 "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
218 "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
219 "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
220
221 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
222 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
223 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
224 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
225 "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46",
226 "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62",
227
228 "pc", "npc",
8b39fe56 229
6707b003
UW		 230 /* FIXME: Give "state" a name until we start using register groups. */
231 "state",
232 "fsr",
233 "fprs",
234 "y",
8b39fe56
MK		 235};
236
237/* Total number of registers. */
6707b003 238#define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names)
8b39fe56
MK		 239
240/* We provide the aliases %d0..%d62 and %q0..%q60 for the floating
241 registers as "psuedo" registers. */
242
6707b003 243static const char *sparc64_pseudo_register_names[] =
8b39fe56 244{
6707b003
UW		 245 "cwp", "pstate", "asi", "ccr",
246
247 "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14",
248 "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30",
249 "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46",
250 "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62",
251
252 "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28",
253 "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60",
8b39fe56
MK		 254};
255
256/* Total number of pseudo registers. */
6707b003 257#define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names)
8b39fe56
MK		 258
259/* Return the name of register REGNUM. */
260
261static const char *
d93859e2 262sparc64_register_name (struct gdbarch *gdbarch, int regnum)
8b39fe56
MK		 263{
264 if (regnum >= 0 && regnum < SPARC64_NUM_REGS)
6707b003 265 return sparc64_register_names[regnum];
8b39fe56
MK		 266
267 if (regnum >= SPARC64_NUM_REGS
268 && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS)
6707b003 269 return sparc64_pseudo_register_names[regnum - SPARC64_NUM_REGS];
8b39fe56
MK		 270
271 return NULL;
272}
273
274/* Return the GDB type object for the "standard" data type of data in
c378eb4e 275 register REGNUM. */
8b39fe56
MK		 276
277static struct type *
278sparc64_register_type (struct gdbarch *gdbarch, int regnum)
279{
6707b003
UW		 280 /* Raw registers. */
281
282 if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM)
0dfff4cb 283 return builtin_type (gdbarch)->builtin_data_ptr;
6707b003 284 if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM)
df4df182 285 return builtin_type (gdbarch)->builtin_int64;
6707b003 286 if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
0dfff4cb 287 return builtin_type (gdbarch)->builtin_float;
6707b003 288 if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM)
0dfff4cb 289 return builtin_type (gdbarch)->builtin_double;
6707b003 290 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
0dfff4cb 291 return builtin_type (gdbarch)->builtin_func_ptr;
6707b003
UW		 292 /* This raw register contains the contents of %cwp, %pstate, %asi
293 and %ccr as laid out in a %tstate register. */
294 if (regnum == SPARC64_STATE_REGNUM)
df4df182 295 return builtin_type (gdbarch)->builtin_int64;
6707b003 296 if (regnum == SPARC64_FSR_REGNUM)
209bd28e 297 return sparc64_fsr_type (gdbarch);
6707b003 298 if (regnum == SPARC64_FPRS_REGNUM)
209bd28e 299 return sparc64_fprs_type (gdbarch);
6707b003
UW		 300 /* "Although Y is a 64-bit register, its high-order 32 bits are
301 reserved and always read as 0." */
302 if (regnum == SPARC64_Y_REGNUM)
df4df182 303 return builtin_type (gdbarch)->builtin_int64;
6707b003
UW		 304
305 /* Pseudo registers. */
306
307 if (regnum == SPARC64_CWP_REGNUM)
df4df182 308 return builtin_type (gdbarch)->builtin_int64;
6707b003 309 if (regnum == SPARC64_PSTATE_REGNUM)
209bd28e 310 return sparc64_pstate_type (gdbarch);
6707b003 311 if (regnum == SPARC64_ASI_REGNUM)
df4df182 312 return builtin_type (gdbarch)->builtin_int64;
6707b003 313 if (regnum == SPARC64_CCR_REGNUM)
df4df182 314 return builtin_type (gdbarch)->builtin_int64;
6707b003 315 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM)
0dfff4cb 316 return builtin_type (gdbarch)->builtin_double;
6707b003 317 if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM)
0dfff4cb 318 return builtin_type (gdbarch)->builtin_long_double;
6707b003
UW		 319
320 internal_error (__FILE__, __LINE__, _("invalid regnum"));
8b39fe56
MK		 321}
322
05d1431c 323static enum register_status
8b39fe56
MK		 324sparc64_pseudo_register_read (struct gdbarch *gdbarch,
325 struct regcache *regcache,
e1613aba 326 int regnum, gdb_byte *buf)
8b39fe56 327{
e17a4113 328 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
05d1431c
PA		 329 enum register_status status;
330
8b39fe56
MK		 331 gdb_assert (regnum >= SPARC64_NUM_REGS);
332
333 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
334 {
335 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
05d1431c
PA		 336 status = regcache_raw_read (regcache, regnum, buf);
337 if (status == REG_VALID)
338 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
339 return status;
8b39fe56
MK		 340 }
341 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
342 {
343 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
05d1431c 344 return regcache_raw_read (regcache, regnum, buf);
8b39fe56
MK		 345 }
346 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
347 {
348 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
05d1431c
PA		 349
350 status = regcache_raw_read (regcache, regnum, buf);
351 if (status == REG_VALID)
352 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
353 if (status == REG_VALID)
354 status = regcache_raw_read (regcache, regnum + 2, buf + 8);
355 if (status == REG_VALID)
356 status = regcache_raw_read (regcache, regnum + 3, buf + 12);
357
358 return status;
8b39fe56
MK		 359 }
360 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
361 {
362 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
05d1431c
PA		 363
364 status = regcache_raw_read (regcache, regnum, buf);
365 if (status == REG_VALID)
366 status = regcache_raw_read (regcache, regnum + 1, buf + 8);
367
368 return status;
8b39fe56
MK		 369 }
370 else if (regnum == SPARC64_CWP_REGNUM
371 || regnum == SPARC64_PSTATE_REGNUM
372 || regnum == SPARC64_ASI_REGNUM
373 || regnum == SPARC64_CCR_REGNUM)
374 {
375 ULONGEST state;
376
05d1431c
PA		 377 status = regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
378 if (status != REG_VALID)
379 return status;
380
8b39fe56
MK		 381 switch (regnum)
382 {
3567a8ea 383 case SPARC64_CWP_REGNUM:
8b39fe56
MK		 384 state = (state >> 0) & ((1 << 5) - 1);
385 break;
3567a8ea 386 case SPARC64_PSTATE_REGNUM:
8b39fe56
MK		 387 state = (state >> 8) & ((1 << 12) - 1);
388 break;
3567a8ea 389 case SPARC64_ASI_REGNUM:
8b39fe56
MK		 390 state = (state >> 24) & ((1 << 8) - 1);
391 break;
3567a8ea 392 case SPARC64_CCR_REGNUM:
8b39fe56
MK		 393 state = (state >> 32) & ((1 << 8) - 1);
394 break;
395 }
e17a4113 396 store_unsigned_integer (buf, 8, byte_order, state);
8b39fe56 397 }
05d1431c
PA		 398
399 return REG_VALID;
8b39fe56
MK		 400}
401
402static void
403sparc64_pseudo_register_write (struct gdbarch *gdbarch,
404 struct regcache *regcache,
e1613aba 405 int regnum, const gdb_byte *buf)
8b39fe56 406{
e17a4113 407 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
8b39fe56
MK		 408 gdb_assert (regnum >= SPARC64_NUM_REGS);
409
410 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
411 {
412 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
413 regcache_raw_write (regcache, regnum, buf);
e1613aba 414 regcache_raw_write (regcache, regnum + 1, buf + 4);
8b39fe56
MK		 415 }
416 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
417 {
418 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
419 regcache_raw_write (regcache, regnum, buf);
420 }
421 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
422 {
423 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
424 regcache_raw_write (regcache, regnum, buf);
e1613aba
MK		 425 regcache_raw_write (regcache, regnum + 1, buf + 4);
426 regcache_raw_write (regcache, regnum + 2, buf + 8);
427 regcache_raw_write (regcache, regnum + 3, buf + 12);
8b39fe56
MK		 428 }
429 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
430 {
431 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
432 regcache_raw_write (regcache, regnum, buf);
e1613aba 433 regcache_raw_write (regcache, regnum + 1, buf + 8);
8b39fe56 434 }
3567a8ea
MK		 435 else if (regnum == SPARC64_CWP_REGNUM
436 || regnum == SPARC64_PSTATE_REGNUM
437 || regnum == SPARC64_ASI_REGNUM
438 || regnum == SPARC64_CCR_REGNUM)
439 {
440 ULONGEST state, bits;
441
442 regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
e17a4113 443 bits = extract_unsigned_integer (buf, 8, byte_order);
3567a8ea
MK		 444 switch (regnum)
445 {
446 case SPARC64_CWP_REGNUM:
447 state |= ((bits & ((1 << 5) - 1)) << 0);
448 break;
449 case SPARC64_PSTATE_REGNUM:
450 state |= ((bits & ((1 << 12) - 1)) << 8);
451 break;
452 case SPARC64_ASI_REGNUM:
453 state |= ((bits & ((1 << 8) - 1)) << 24);
454 break;
455 case SPARC64_CCR_REGNUM:
456 state |= ((bits & ((1 << 8) - 1)) << 32);
457 break;
458 }
459 regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
460 }
8b39fe56 461}
8b39fe56
MK		 462\f
463
8b39fe56
MK		 464/* Return PC of first real instruction of the function starting at
465 START_PC. */
466
467static CORE_ADDR
6093d2eb 468sparc64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
8b39fe56
MK		 469{
470 struct symtab_and_line sal;
471 CORE_ADDR func_start, func_end;
386c036b 472 struct sparc_frame_cache cache;
8b39fe56
MK		 473
474 /* This is the preferred method, find the end of the prologue by
475 using the debugging information. */
476 if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end))
477 {
478 sal = find_pc_line (func_start, 0);
479
480 if (sal.end < func_end
481 && start_pc <= sal.end)
482 return sal.end;
483 }
484
be8626e0
MD		 485 return sparc_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffULL,
486 &cache);
8b39fe56
MK		 487}
488
489/* Normal frames. */
490
386c036b 491static struct sparc_frame_cache *
236369e7 492sparc64_frame_cache (struct frame_info *this_frame, void **this_cache)
8b39fe56 493{
236369e7 494 return sparc_frame_cache (this_frame, this_cache);
8b39fe56
MK		 495}
496
497static void
236369e7 498sparc64_frame_this_id (struct frame_info *this_frame, void **this_cache,
8b39fe56
MK		 499 struct frame_id *this_id)
500{
386c036b 501 struct sparc_frame_cache *cache =
236369e7 502 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK		 503
504 /* This marks the outermost frame. */
505 if (cache->base == 0)
506 return;
507
508 (*this_id) = frame_id_build (cache->base, cache->pc);
509}
510
236369e7
JB		 511static struct value *
512sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache,
513 int regnum)
8b39fe56 514{
e17a4113 515 struct gdbarch *gdbarch = get_frame_arch (this_frame);
386c036b 516 struct sparc_frame_cache *cache =
236369e7 517 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK		 518
519 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
520 {
236369e7 521 CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0;
8b39fe56 522
236369e7
JB		 523 regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM;
524 pc += get_frame_register_unsigned (this_frame, regnum) + 8;
525 return frame_unwind_got_constant (this_frame, regnum, pc);
8b39fe56
MK		 526 }
527
f700a364
MK		 528 /* Handle StackGhost. */
529 {
e17a4113 530 ULONGEST wcookie = sparc_fetch_wcookie (gdbarch);
f700a364
MK		 531
532 if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM)
533 {
236369e7
JB		 534 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
535 ULONGEST i7;
536
537 /* Read the value in from memory. */
538 i7 = get_frame_memory_unsigned (this_frame, addr, 8);
539 return frame_unwind_got_constant (this_frame, regnum, i7 ^ wcookie);
f700a364
MK		 540 }
541 }
542
8b39fe56
MK		 543 /* The previous frame's `local' and `in' registers have been saved
544 in the register save area. */
545 if (!cache->frameless_p
546 && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM)
547 {
236369e7 548 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
8b39fe56 549
236369e7 550 return frame_unwind_got_memory (this_frame, regnum, addr);
8b39fe56
MK		 551 }
552
553 /* The previous frame's `out' registers are accessable as the
554 current frame's `in' registers. */
555 if (!cache->frameless_p
556 && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
557 regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM);
558
236369e7 559 return frame_unwind_got_register (this_frame, regnum, regnum);
8b39fe56
MK		 560}
561
562static const struct frame_unwind sparc64_frame_unwind =
563{
564 NORMAL_FRAME,
8fbca658 565 default_frame_unwind_stop_reason,
8b39fe56 566 sparc64_frame_this_id,
236369e7
JB		 567 sparc64_frame_prev_register,
568 NULL,
569 default_frame_sniffer
8b39fe56 570};
8b39fe56
MK		 571\f
572
573static CORE_ADDR
236369e7 574sparc64_frame_base_address (struct frame_info *this_frame, void **this_cache)
8b39fe56 575{
386c036b 576 struct sparc_frame_cache *cache =
236369e7 577 sparc64_frame_cache (this_frame, this_cache);
8b39fe56 578
5b2d44a0 579 return cache->base;
8b39fe56
MK		 580}
581
582static const struct frame_base sparc64_frame_base =
583{
584 &sparc64_frame_unwind,
585 sparc64_frame_base_address,
586 sparc64_frame_base_address,
587 sparc64_frame_base_address
588};
8b39fe56
MK		 589\f
590/* Check whether TYPE must be 16-byte aligned. */
591
592static int
593sparc64_16_byte_align_p (struct type *type)
594{
595 if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16)
596 return 1;
597
598 if (sparc64_structure_or_union_p (type))
599 {
600 int i;
601
602 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 603 {
604 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
605
606 if (sparc64_16_byte_align_p (subtype))
607 return 1;
608 }
8b39fe56
MK		 609 }
610
611 return 0;
612}
613
614/* Store floating fields of element ELEMENT of an "parameter array"
615 that has type TYPE and is stored at BITPOS in VALBUF in the
616 apropriate registers of REGCACHE. This function can be called
617 recursively and therefore handles floating types in addition to
618 structures. */
619
620static void
621sparc64_store_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 622 const gdb_byte *valbuf, int element, int bitpos)
8b39fe56
MK		 623{
624 gdb_assert (element < 16);
625
626 if (sparc64_floating_p (type))
627 {
628 int len = TYPE_LENGTH (type);
629 int regnum;
630
631 if (len == 16)
632 {
633 gdb_assert (bitpos == 0);
634 gdb_assert ((element % 2) == 0);
635
636 regnum = SPARC64_Q0_REGNUM + element / 2;
637 regcache_cooked_write (regcache, regnum, valbuf);
638 }
639 else if (len == 8)
640 {
641 gdb_assert (bitpos == 0 || bitpos == 64);
642
643 regnum = SPARC64_D0_REGNUM + element + bitpos / 64;
644 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
645 }
646 else
647 {
648 gdb_assert (len == 4);
649 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128);
650
651 regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32;
652 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
653 }
654 }
655 else if (sparc64_structure_or_union_p (type))
656 {
657 int i;
658
659 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 660 {
661 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
662 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
663
664 sparc64_store_floating_fields (regcache, subtype, valbuf,
665 element, subpos);
666 }
200cc553
MK		 667
668 /* GCC has an interesting bug. If TYPE is a structure that has
669 a single `float' member, GCC doesn't treat it as a structure
670 at all, but rather as an ordinary `float' argument. This
671 argument will be stored in %f1, as required by the psABI.
672 However, as a member of a structure the psABI requires it to
5154b0cd
MK		 673 be stored in %f0. This bug is present in GCC 3.3.2, but
674 probably in older releases to. To appease GCC, if a
675 structure has only a single `float' member, we store its
676 value in %f1 too (we already have stored in %f0). */
200cc553
MK		 677 if (TYPE_NFIELDS (type) == 1)
678 {
679 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0));
680
681 if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4)
682 regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf);
683 }
8b39fe56
MK		 684 }
685}
686
687/* Fetch floating fields from a variable of type TYPE from the
688 appropriate registers for BITPOS in REGCACHE and store it at BITPOS
689 in VALBUF. This function can be called recursively and therefore
690 handles floating types in addition to structures. */
691
692static void
693sparc64_extract_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 694 gdb_byte *valbuf, int bitpos)
8b39fe56
MK		 695{
696 if (sparc64_floating_p (type))
697 {
698 int len = TYPE_LENGTH (type);
699 int regnum;
700
701 if (len == 16)
702 {
703 gdb_assert (bitpos == 0 || bitpos == 128);
704
705 regnum = SPARC64_Q0_REGNUM + bitpos / 128;
706 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
707 }
708 else if (len == 8)
709 {
710 gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256);
711
712 regnum = SPARC64_D0_REGNUM + bitpos / 64;
713 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
714 }
715 else
716 {
717 gdb_assert (len == 4);
718 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256);
719
720 regnum = SPARC_F0_REGNUM + bitpos / 32;
721 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
722 }
723 }
724 else if (sparc64_structure_or_union_p (type))
725 {
726 int i;
727
728 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK		 729 {
730 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
731 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
732
733 sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos);
734 }
8b39fe56
MK		 735 }
736}
737
738/* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is
739 non-zero) in REGCACHE and on the stack (starting from address SP). */
740
741static CORE_ADDR
742sparc64_store_arguments (struct regcache *regcache, int nargs,
743 struct value **args, CORE_ADDR sp,
744 int struct_return, CORE_ADDR struct_addr)
745{
df4df182 746 struct gdbarch *gdbarch = get_regcache_arch (regcache);
8b39fe56
MK		 747 /* Number of extended words in the "parameter array". */
748 int num_elements = 0;
749 int element = 0;
750 int i;
751
752 /* Take BIAS into account. */
753 sp += BIAS;
754
755 /* First we calculate the number of extended words in the "parameter
756 array". While doing so we also convert some of the arguments. */
757
758 if (struct_return)
759 num_elements++;
760
761 for (i = 0; i < nargs; i++)
762 {
4991999e 763 struct type *type = value_type (args[i]);
8b39fe56
MK		 764 int len = TYPE_LENGTH (type);
765
766 if (sparc64_structure_or_union_p (type))
767 {
768 /* Structure or Union arguments. */
769 if (len <= 16)
770 {
771 if (num_elements % 2 && sparc64_16_byte_align_p (type))
772 num_elements++;
773 num_elements += ((len + 7) / 8);
774 }
775 else
776 {
777 /* The psABI says that "Structures or unions larger than
778 sixteen bytes are copied by the caller and passed
779 indirectly; the caller will pass the address of a
780 correctly aligned structure value. This sixty-four
781 bit address will occupy one word in the parameter
782 array, and may be promoted to an %o register like any
783 other pointer value." Allocate memory for these
784 values on the stack. */
785 sp -= len;
786
787 /* Use 16-byte alignment for these values. That's
788 always correct, and wasting a few bytes shouldn't be
789 a problem. */
790 sp &= ~0xf;
791
0fd88904 792 write_memory (sp, value_contents (args[i]), len);
8b39fe56
MK		 793 args[i] = value_from_pointer (lookup_pointer_type (type), sp);
794 num_elements++;
795 }
796 }
797 else if (sparc64_floating_p (type))
798 {
799 /* Floating arguments. */
800
801 if (len == 16)
802 {
803 /* The psABI says that "Each quad-precision parameter
804 value will be assigned to two extended words in the
805 parameter array. */
806 num_elements += 2;
807
808 /* The psABI says that "Long doubles must be
809 quad-aligned, and thus a hole might be introduced
810 into the parameter array to force alignment." Skip
811 an element if necessary. */
812 if (num_elements % 2)
813 num_elements++;
814 }
815 else
816 num_elements++;
817 }
818 else
819 {
820 /* Integral and pointer arguments. */
821 gdb_assert (sparc64_integral_or_pointer_p (type));
822
823 /* The psABI says that "Each argument value of integral type
824 smaller than an extended word will be widened by the
825 caller to an extended word according to the signed-ness
826 of the argument type." */
827 if (len < 8)
df4df182
UW		 828 args[i] = value_cast (builtin_type (gdbarch)->builtin_int64,
829 args[i]);
8b39fe56
MK		 830 num_elements++;
831 }
832 }
833
834 /* Allocate the "parameter array". */
835 sp -= num_elements * 8;
836
837 /* The psABI says that "Every stack frame must be 16-byte aligned." */
838 sp &= ~0xf;
839
840 /* Now we store the arguments in to the "paramater array". Some
841 Integer or Pointer arguments and Structure or Union arguments
842 will be passed in %o registers. Some Floating arguments and
843 floating members of structures are passed in floating-point
844 registers. However, for functions with variable arguments,
845 floating arguments are stored in an %0 register, and for
846 functions without a prototype floating arguments are stored in
847 both a floating-point and an %o registers, or a floating-point
848 register and memory. To simplify the logic here we always pass
849 arguments in memory, an %o register, and a floating-point
850 register if appropriate. This should be no problem since the
851 contents of any unused memory or registers in the "parameter
852 array" are undefined. */
853
854 if (struct_return)
855 {
856 regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr);
857 element++;
858 }
859
860 for (i = 0; i < nargs; i++)
861 {
e1613aba 862 const gdb_byte *valbuf = value_contents (args[i]);
4991999e 863 struct type *type = value_type (args[i]);
8b39fe56
MK		 864 int len = TYPE_LENGTH (type);
865 int regnum = -1;
e1613aba 866 gdb_byte buf[16];
8b39fe56
MK		 867
868 if (sparc64_structure_or_union_p (type))
869 {
870 /* Structure or Union arguments. */
871 gdb_assert (len <= 16);
872 memset (buf, 0, sizeof (buf));
873 valbuf = memcpy (buf, valbuf, len);
874
875 if (element % 2 && sparc64_16_byte_align_p (type))
876 element++;
877
878 if (element < 6)
879 {
880 regnum = SPARC_O0_REGNUM + element;
881 if (len > 8 && element < 5)
882 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
883 }
884
885 if (element < 16)
886 sparc64_store_floating_fields (regcache, type, valbuf, element, 0);
887 }
888 else if (sparc64_floating_p (type))
889 {
890 /* Floating arguments. */
891 if (len == 16)
892 {
893 if (element % 2)
894 element++;
895 if (element < 16)
896 regnum = SPARC64_Q0_REGNUM + element / 2;
897 }
898 else if (len == 8)
899 {
900 if (element < 16)
901 regnum = SPARC64_D0_REGNUM + element;
902 }
903 else
904 {
905 /* The psABI says "Each single-precision parameter value
906 will be assigned to one extended word in the
907 parameter array, and right-justified within that
908 word; the left half (even floatregister) is
909 undefined." Even though the psABI says that "the
910 left half is undefined", set it to zero here. */
911 memset (buf, 0, 4);
8ada74e3
MK		 912 memcpy (buf + 4, valbuf, 4);
913 valbuf = buf;
8b39fe56
MK		 914 len = 8;
915 if (element < 16)
8ada74e3 916 regnum = SPARC64_D0_REGNUM + element;
8b39fe56
MK		 917 }
918 }
919 else
920 {
921 /* Integral and pointer arguments. */
922 gdb_assert (len == 8);
923 if (element < 6)
924 regnum = SPARC_O0_REGNUM + element;
925 }
926
927 if (regnum != -1)
928 {
929 regcache_cooked_write (regcache, regnum, valbuf);
930
931 /* If we're storing the value in a floating-point register,
932 also store it in the corresponding %0 register(s). */
933 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM)
934 {
935 gdb_assert (element < 6);
936 regnum = SPARC_O0_REGNUM + element;
937 regcache_cooked_write (regcache, regnum, valbuf);
938 }
939 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM)
940 {
941 gdb_assert (element < 6);
942 regnum = SPARC_O0_REGNUM + element;
943 regcache_cooked_write (regcache, regnum, valbuf);
d47079be 944 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
8b39fe56
MK		 945 }
946 }
947
c4f2d4d7 948 /* Always store the argument in memory. */
8b39fe56
MK		 949 write_memory (sp + element * 8, valbuf, len);
950 element += ((len + 7) / 8);
951 }
952
953 gdb_assert (element == num_elements);
954
955 /* Take BIAS into account. */
956 sp -= BIAS;
957 return sp;
958}
959
49a45ecf
JB		 960static CORE_ADDR
961sparc64_frame_align (struct gdbarch *gdbarch, CORE_ADDR address)
962{
963 /* The ABI requires 16-byte alignment. */
964 return address & ~0xf;
965}
966
8b39fe56 967static CORE_ADDR
7d9b040b 968sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
8b39fe56
MK		 969 struct regcache *regcache, CORE_ADDR bp_addr,
970 int nargs, struct value **args, CORE_ADDR sp,
971 int struct_return, CORE_ADDR struct_addr)
972{
973 /* Set return address. */
974 regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8);
975
976 /* Set up function arguments. */
977 sp = sparc64_store_arguments (regcache, nargs, args, sp,
978 struct_return, struct_addr);
979
980 /* Allocate the register save area. */
981 sp -= 16 * 8;
982
983 /* Stack should be 16-byte aligned at this point. */
3567a8ea 984 gdb_assert ((sp + BIAS) % 16 == 0);
8b39fe56
MK		 985
986 /* Finally, update the stack pointer. */
987 regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp);
988
5b2d44a0 989 return sp + BIAS;
8b39fe56
MK		 990}
991\f
992
993/* Extract from an array REGBUF containing the (raw) register state, a
994 function return value of TYPE, and copy that into VALBUF. */
995
996static void
997sparc64_extract_return_value (struct type *type, struct regcache *regcache,
e1613aba 998 gdb_byte *valbuf)
8b39fe56
MK		 999{
1000 int len = TYPE_LENGTH (type);
e1613aba 1001 gdb_byte buf[32];
8b39fe56
MK		 1002 int i;
1003
1004 if (sparc64_structure_or_union_p (type))
1005 {
1006 /* Structure or Union return values. */
1007 gdb_assert (len <= 32);
1008
1009 for (i = 0; i < ((len + 7) / 8); i++)
1010 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1011 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1012 sparc64_extract_floating_fields (regcache, type, buf, 0);
1013 memcpy (valbuf, buf, len);
1014 }
1015 else if (sparc64_floating_p (type))
1016 {
1017 /* Floating return values. */
1018 for (i = 0; i < len / 4; i++)
1019 regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1020 memcpy (valbuf, buf, len);
1021 }
4bd87714
JB		 1022 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1023 {
1024 /* Small arrays are returned the same way as small structures. */
1025 gdb_assert (len <= 32);
1026
1027 for (i = 0; i < ((len + 7) / 8); i++)
1028 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1029 memcpy (valbuf, buf, len);
1030 }
8b39fe56
MK		 1031 else
1032 {
1033 /* Integral and pointer return values. */
1034 gdb_assert (sparc64_integral_or_pointer_p (type));
1035
1036 /* Just stripping off any unused bytes should preserve the
1037 signed-ness just fine. */
1038 regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf);
1039 memcpy (valbuf, buf + 8 - len, len);
1040 }
1041}
1042
1043/* Write into the appropriate registers a function return value stored
1044 in VALBUF of type TYPE. */
1045
1046static void
1047sparc64_store_return_value (struct type *type, struct regcache *regcache,
e1613aba 1048 const gdb_byte *valbuf)
8b39fe56
MK		 1049{
1050 int len = TYPE_LENGTH (type);
e1613aba 1051 gdb_byte buf[16];
8b39fe56
MK		 1052 int i;
1053
1054 if (sparc64_structure_or_union_p (type))
1055 {
1056 /* Structure or Union return values. */
1057 gdb_assert (len <= 32);
1058
1059 /* Simplify matters by storing the complete value (including
1060 floating members) into %o0 and %o1. Floating members are
1061 also store in the appropriate floating-point registers. */
1062 memset (buf, 0, sizeof (buf));
1063 memcpy (buf, valbuf, len);
1064 for (i = 0; i < ((len + 7) / 8); i++)
60af1db2 1065 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
8b39fe56
MK		 1066 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1067 sparc64_store_floating_fields (regcache, type, buf, 0, 0);
1068 }
1069 else if (sparc64_floating_p (type))
1070 {
1071 /* Floating return values. */
1072 memcpy (buf, valbuf, len);
1073 for (i = 0; i < len / 4; i++)
1074 regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1075 }
4bd87714
JB		 1076 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1077 {
1078 /* Small arrays are returned the same way as small structures. */
1079 gdb_assert (len <= 32);
1080
1081 memset (buf, 0, sizeof (buf));
1082 memcpy (buf, valbuf, len);
1083 for (i = 0; i < ((len + 7) / 8); i++)
1084 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1085 }
8b39fe56
MK		 1086 else
1087 {
1088 /* Integral and pointer return values. */
1089 gdb_assert (sparc64_integral_or_pointer_p (type));
1090
1091 /* ??? Do we need to do any sign-extension here? */
1092 memset (buf, 0, 8);
1093 memcpy (buf + 8 - len, valbuf, len);
1094 regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf);
1095 }
1096}
1097
60af1db2 1098static enum return_value_convention
c055b101
CV		 1099sparc64_return_value (struct gdbarch *gdbarch, struct type *func_type,
1100 struct type *type, struct regcache *regcache,
1101 gdb_byte *readbuf, const gdb_byte *writebuf)
8b39fe56 1102{
60af1db2
MK		 1103 if (TYPE_LENGTH (type) > 32)
1104 return RETURN_VALUE_STRUCT_CONVENTION;
1105
1106 if (readbuf)
1107 sparc64_extract_return_value (type, regcache, readbuf);
1108 if (writebuf)
1109 sparc64_store_return_value (type, regcache, writebuf);
1110
1111 return RETURN_VALUE_REGISTER_CONVENTION;
8b39fe56 1112}
8b39fe56 1113\f
8b39fe56 1114
02a71ae8
MK		 1115static void
1116sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
aff37fc1 1117 struct dwarf2_frame_state_reg *reg,
4a4e5149 1118 struct frame_info *this_frame)
02a71ae8
MK		 1119{
1120 switch (regnum)
1121 {
1122 case SPARC_G0_REGNUM:
1123 /* Since %g0 is always zero, there is no point in saving it, and
1124 people will be inclined omit it from the CFI. Make sure we
1125 don't warn about that. */
1126 reg->how = DWARF2_FRAME_REG_SAME_VALUE;
1127 break;
1128 case SPARC_SP_REGNUM:
1129 reg->how = DWARF2_FRAME_REG_CFA;
1130 break;
1131 case SPARC64_PC_REGNUM:
1132 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1133 reg->loc.offset = 8;
1134 break;
1135 case SPARC64_NPC_REGNUM:
1136 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1137 reg->loc.offset = 12;
1138 break;
1139 }
1140}
1141
8b39fe56 1142void
386c036b 1143sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
8b39fe56 1144{
386c036b 1145 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
8b39fe56 1146
386c036b
MK		 1147 tdep->pc_regnum = SPARC64_PC_REGNUM;
1148 tdep->npc_regnum = SPARC64_NPC_REGNUM;
8b39fe56 1149
386c036b 1150 /* This is what all the fuss is about. */
8b39fe56
MK		 1151 set_gdbarch_long_bit (gdbarch, 64);
1152 set_gdbarch_long_long_bit (gdbarch, 64);
1153 set_gdbarch_ptr_bit (gdbarch, 64);
8b39fe56
MK		 1154
1155 set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS);
1156 set_gdbarch_register_name (gdbarch, sparc64_register_name);
1157 set_gdbarch_register_type (gdbarch, sparc64_register_type);
1158 set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS);
1159 set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read);
1160 set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write);
1161
1162 /* Register numbers of various important registers. */
8b39fe56 1163 set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */
8b39fe56
MK		 1164
1165 /* Call dummy code. */
49a45ecf 1166 set_gdbarch_frame_align (gdbarch, sparc64_frame_align);
386c036b
MK		 1167 set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
1168 set_gdbarch_push_dummy_code (gdbarch, NULL);
8b39fe56
MK		 1169 set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call);
1170
60af1db2 1171 set_gdbarch_return_value (gdbarch, sparc64_return_value);
386c036b
MK		 1172 set_gdbarch_stabs_argument_has_addr
1173 (gdbarch, default_stabs_argument_has_addr);
8b39fe56
MK		 1174
1175 set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue);
1176
02a71ae8
MK		 1177 /* Hook in the DWARF CFI frame unwinder. */
1178 dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg);
1179 /* FIXME: kettenis/20050423: Don't enable the unwinder until the
1180 StackGhost issues have been resolved. */
1181
236369e7 1182 frame_unwind_append_unwinder (gdbarch, &sparc64_frame_unwind);
8b39fe56 1183 frame_base_set_default (gdbarch, &sparc64_frame_base);
386c036b
MK		 1184}
1185\f
8b39fe56 1186
386c036b 1187/* Helper functions for dealing with register sets. */
8b39fe56 1188
386c036b
MK		 1189#define TSTATE_CWP 0x000000000000001fULL
1190#define TSTATE_ICC 0x0000000f00000000ULL
1191#define TSTATE_XCC 0x000000f000000000ULL
8b39fe56 1192
386c036b
MK		 1193#define PSR_S 0x00000080
1194#define PSR_ICC 0x00f00000
1195#define PSR_VERS 0x0f000000
1196#define PSR_IMPL 0xf0000000
1197#define PSR_V8PLUS 0xff000000
1198#define PSR_XCC 0x000f0000
8b39fe56 1199
3567a8ea 1200void
386c036b
MK		 1201sparc64_supply_gregset (const struct sparc_gregset *gregset,
1202 struct regcache *regcache,
1203 int regnum, const void *gregs)
8b39fe56 1204{
e17a4113
UW		 1205 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1206 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1207 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
e1613aba 1208 const gdb_byte *regs = gregs;
8b39fe56
MK		 1209 int i;
1210
386c036b 1211 if (sparc32)
8b39fe56 1212 {
386c036b
MK		 1213 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1214 {
1215 int offset = gregset->r_tstate_offset;
1216 ULONGEST tstate, psr;
e1613aba 1217 gdb_byte buf[4];
386c036b 1218
e17a4113 1219 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b
MK		 1220 psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12)
1221 | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS);
e17a4113 1222 store_unsigned_integer (buf, 4, byte_order, psr);
386c036b
MK		 1223 regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf);
1224 }
1225
1226 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1227 regcache_raw_supply (regcache, SPARC32_PC_REGNUM,
1228 regs + gregset->r_pc_offset + 4);
1229
1230 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1231 regcache_raw_supply (regcache, SPARC32_NPC_REGNUM,
1232 regs + gregset->r_npc_offset + 4);
8b39fe56 1233
386c036b 1234 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1235 {
386c036b
MK		 1236 int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
1237 regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK		 1238 }
1239 }
1240 else
1241 {
386c036b
MK		 1242 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1243 regcache_raw_supply (regcache, SPARC64_STATE_REGNUM,
1244 regs + gregset->r_tstate_offset);
8b39fe56 1245
386c036b
MK		 1246 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1247 regcache_raw_supply (regcache, SPARC64_PC_REGNUM,
1248 regs + gregset->r_pc_offset);
1249
1250 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1251 regcache_raw_supply (regcache, SPARC64_NPC_REGNUM,
1252 regs + gregset->r_npc_offset);
1253
1254 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1255 {
e1613aba 1256 gdb_byte buf[8];
386c036b
MK		 1257
1258 memset (buf, 0, 8);
1259 memcpy (buf + 8 - gregset->r_y_size,
1260 regs + gregset->r_y_offset, gregset->r_y_size);
1261 regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf);
3567a8ea 1262 }
8b39fe56 1263
386c036b
MK		 1264 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
1265 && gregset->r_fprs_offset != -1)
1266 regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM,
1267 regs + gregset->r_fprs_offset);
1268 }
1269
1270 if (regnum == SPARC_G0_REGNUM || regnum == -1)
1271 regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL);
1272
1273 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1274 {
1275 int offset = gregset->r_g1_offset;
1276
1277 if (sparc32)
1278 offset += 4;
1279
1280 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
8b39fe56 1281 {
3567a8ea 1282 if (regnum == i || regnum == -1)
386c036b
MK		 1283 regcache_raw_supply (regcache, i, regs + offset);
1284 offset += 8;
1285 }
1286 }
1287
1288 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1289 {
1290 /* Not all of the register set variants include Locals and
1291 Inputs. For those that don't, we read them off the stack. */
1292 if (gregset->r_l0_offset == -1)
1293 {
1294 ULONGEST sp;
1295
1296 regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
1297 sparc_supply_rwindow (regcache, sp, regnum);
1298 }
1299 else
1300 {
1301 int offset = gregset->r_l0_offset;
1302
1303 if (sparc32)
1304 offset += 4;
1305
1306 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1307 {
386c036b
MK		 1308 if (regnum == i || regnum == -1)
1309 regcache_raw_supply (regcache, i, regs + offset);
1310 offset += 8;
3567a8ea 1311 }
8b39fe56
MK		 1312 }
1313 }
1314}
1315
1316void
386c036b
MK		 1317sparc64_collect_gregset (const struct sparc_gregset *gregset,
1318 const struct regcache *regcache,
1319 int regnum, void *gregs)
8b39fe56 1320{
e17a4113
UW		 1321 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1322 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1323 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
e1613aba 1324 gdb_byte *regs = gregs;
3567a8ea
MK		 1325 int i;
1326
386c036b 1327 if (sparc32)
8b39fe56 1328 {
386c036b
MK		 1329 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1330 {
1331 int offset = gregset->r_tstate_offset;
1332 ULONGEST tstate, psr;
e1613aba 1333 gdb_byte buf[8];
386c036b 1334
e17a4113 1335 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b 1336 regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf);
e17a4113 1337 psr = extract_unsigned_integer (buf, 4, byte_order);
386c036b
MK		 1338 tstate |= (psr & PSR_ICC) << 12;
1339 if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS)
1340 tstate |= (psr & PSR_XCC) << 20;
e17a4113 1341 store_unsigned_integer (buf, 8, byte_order, tstate);
386c036b
MK		 1342 memcpy (regs + offset, buf, 8);
1343 }
8b39fe56 1344
386c036b
MK		 1345 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1346 regcache_raw_collect (regcache, SPARC32_PC_REGNUM,
1347 regs + gregset->r_pc_offset + 4);
1348
1349 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1350 regcache_raw_collect (regcache, SPARC32_NPC_REGNUM,
1351 regs + gregset->r_npc_offset + 4);
1352
1353 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1354 {
386c036b
MK		 1355 int offset = gregset->r_y_offset + 8 - gregset->r_y_size;
1356 regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK		 1357 }
1358 }
1359 else
1360 {
386c036b
MK		 1361 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1362 regcache_raw_collect (regcache, SPARC64_STATE_REGNUM,
1363 regs + gregset->r_tstate_offset);
1364
1365 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1366 regcache_raw_collect (regcache, SPARC64_PC_REGNUM,
1367 regs + gregset->r_pc_offset);
3567a8ea 1368
386c036b
MK		 1369 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1370 regcache_raw_collect (regcache, SPARC64_NPC_REGNUM,
1371 regs + gregset->r_npc_offset);
3567a8ea 1372
386c036b 1373 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1374 {
e1613aba 1375 gdb_byte buf[8];
386c036b
MK		 1376
1377 regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf);
1378 memcpy (regs + gregset->r_y_offset,
1379 buf + 8 - gregset->r_y_size, gregset->r_y_size);
1380 }
1381
1382 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
1383 && gregset->r_fprs_offset != -1)
1384 regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM,
1385 regs + gregset->r_fprs_offset);
1386
1387 }
1388
1389 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1390 {
1391 int offset = gregset->r_g1_offset;
1392
1393 if (sparc32)
1394 offset += 4;
1395
1396 /* %g0 is always zero. */
1397 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
1398 {
1399 if (regnum == i || regnum == -1)
1400 regcache_raw_collect (regcache, i, regs + offset);
1401 offset += 8;
1402 }
1403 }
1404
1405 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1406 {
1407 /* Not all of the register set variants include Locals and
1408 Inputs. For those that don't, we read them off the stack. */
1409 if (gregset->r_l0_offset != -1)
1410 {
1411 int offset = gregset->r_l0_offset;
1412
1413 if (sparc32)
1414 offset += 4;
1415
1416 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1417 {
386c036b
MK		 1418 if (regnum == i || regnum == -1)
1419 regcache_raw_collect (regcache, i, regs + offset);
1420 offset += 8;
3567a8ea
MK		 1421 }
1422 }
8b39fe56
MK		 1423 }
1424}
8b39fe56 1425
386c036b
MK		 1426void
1427sparc64_supply_fpregset (struct regcache *regcache,
1428 int regnum, const void *fpregs)
1429{
e6d4f032 1430 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
e1613aba 1431 const gdb_byte *regs = fpregs;
386c036b
MK		 1432 int i;
1433
1434 for (i = 0; i < 32; i++)
1435 {
1436 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
1437 regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
1438 }
1439
1440 if (sparc32)
1441 {
1442 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1443 regcache_raw_supply (regcache, SPARC32_FSR_REGNUM,
1444 regs + (32 * 4) + (16 * 8) + 4);
1445 }
1446 else
1447 {
1448 for (i = 0; i < 16; i++)
1449 {
1450 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1451 regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i,
1452 regs + (32 * 4) + (i * 8));
1453 }
1454
1455 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1456 regcache_raw_supply (regcache, SPARC64_FSR_REGNUM,
1457 regs + (32 * 4) + (16 * 8));
1458 }
1459}
8b39fe56
MK		 1460
1461void
386c036b
MK		 1462sparc64_collect_fpregset (const struct regcache *regcache,
1463 int regnum, void *fpregs)
8b39fe56 1464{
e6d4f032 1465 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
e1613aba 1466 gdb_byte *regs = fpregs;
386c036b
MK		 1467 int i;
1468
1469 for (i = 0; i < 32; i++)
1470 {
1471 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
1472 regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4));
1473 }
1474
1475 if (sparc32)
1476 {
1477 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1478 regcache_raw_collect (regcache, SPARC32_FSR_REGNUM,
1479 regs + (32 * 4) + (16 * 8) + 4);
1480 }
1481 else
1482 {
1483 for (i = 0; i < 16; i++)
1484 {
1485 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1486 regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i,
1487 regs + (32 * 4) + (i * 8));
1488 }
1489
1490 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1491 regcache_raw_collect (regcache, SPARC64_FSR_REGNUM,
1492 regs + (32 * 4) + (16 * 8));
1493 }
8b39fe56 1494}
fd936806 1495
Empty description
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