arc: Add "maintenance print arc" command prefix
[deliverable/binutils-gdb.git] / gdb / sparc64-tdep.c
CommitLineData
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1/* Target-dependent code for UltraSPARC.
2
61baf725 3 Copyright (C) 2003-2017 Free Software Foundation, Inc.
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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
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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/>. */
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19
20#include "defs.h"
21#include "arch-utils.h"
02a71ae8 22#include "dwarf2-frame.h"
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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"
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29#include "inferior.h"
30#include "symtab.h"
31#include "objfiles.h"
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32#include "osabi.h"
33#include "regcache.h"
3f7b46f2 34#include "target-descriptions.h"
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35#include "target.h"
36#include "value.h"
37
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38#include "sparc64-tdep.h"
39
b021a221 40/* This file implements the SPARC 64-bit ABI as defined by the
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41 section "Low-Level System Information" of the SPARC Compliance
42 Definition (SCD) 2.4.1, which is the 64-bit System V psABI for
43 SPARC. */
44
45/* Please use the sparc32_-prefix for 32-bit specific code, the
46 sparc64_-prefix for 64-bit specific code and the sparc_-prefix for
47 code can handle both. */
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48\f
49/* The functions on this page are intended to be used to classify
50 function arguments. */
51
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52/* Check whether TYPE is "Integral or Pointer". */
53
54static int
55sparc64_integral_or_pointer_p (const struct type *type)
56{
57 switch (TYPE_CODE (type))
58 {
59 case TYPE_CODE_INT:
60 case TYPE_CODE_BOOL:
61 case TYPE_CODE_CHAR:
62 case TYPE_CODE_ENUM:
63 case TYPE_CODE_RANGE:
64 {
65 int len = TYPE_LENGTH (type);
66 gdb_assert (len == 1 || len == 2 || len == 4 || len == 8);
67 }
68 return 1;
69 case TYPE_CODE_PTR:
70 case TYPE_CODE_REF:
aa006118 71 case TYPE_CODE_RVALUE_REF:
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72 {
73 int len = TYPE_LENGTH (type);
74 gdb_assert (len == 8);
75 }
76 return 1;
77 default:
78 break;
79 }
80
81 return 0;
82}
83
84/* Check whether TYPE is "Floating". */
85
86static int
87sparc64_floating_p (const struct type *type)
88{
89 switch (TYPE_CODE (type))
90 {
91 case TYPE_CODE_FLT:
92 {
93 int len = TYPE_LENGTH (type);
94 gdb_assert (len == 4 || len == 8 || len == 16);
95 }
96 return 1;
97 default:
98 break;
99 }
100
101 return 0;
102}
103
fe10a582
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104/* Check whether TYPE is "Complex Floating". */
105
106static int
107sparc64_complex_floating_p (const struct type *type)
108{
109 switch (TYPE_CODE (type))
110 {
111 case TYPE_CODE_COMPLEX:
112 {
113 int len = TYPE_LENGTH (type);
114 gdb_assert (len == 8 || len == 16 || len == 32);
115 }
116 return 1;
117 default:
118 break;
119 }
120
121 return 0;
122}
123
0497f5b0
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124/* Check whether TYPE is "Structure or Union".
125
126 In terms of Ada subprogram calls, arrays are treated the same as
127 struct and union types. So this function also returns non-zero
128 for array types. */
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129
130static int
131sparc64_structure_or_union_p (const struct type *type)
132{
133 switch (TYPE_CODE (type))
134 {
135 case TYPE_CODE_STRUCT:
136 case TYPE_CODE_UNION:
0497f5b0 137 case TYPE_CODE_ARRAY:
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138 return 1;
139 default:
140 break;
141 }
142
143 return 0;
144}
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145\f
146
209bd28e 147/* Construct types for ISA-specific registers. */
fd936806 148
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149static struct type *
150sparc64_pstate_type (struct gdbarch *gdbarch)
151{
152 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
fd936806 153
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UW
154 if (!tdep->sparc64_pstate_type)
155 {
156 struct type *type;
157
e9bb382b 158 type = arch_flags_type (gdbarch, "builtin_type_sparc64_pstate", 8);
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UW
159 append_flags_type_flag (type, 0, "AG");
160 append_flags_type_flag (type, 1, "IE");
161 append_flags_type_flag (type, 2, "PRIV");
162 append_flags_type_flag (type, 3, "AM");
163 append_flags_type_flag (type, 4, "PEF");
164 append_flags_type_flag (type, 5, "RED");
165 append_flags_type_flag (type, 8, "TLE");
166 append_flags_type_flag (type, 9, "CLE");
167 append_flags_type_flag (type, 10, "PID0");
168 append_flags_type_flag (type, 11, "PID1");
169
170 tdep->sparc64_pstate_type = type;
171 }
fd936806 172
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173 return tdep->sparc64_pstate_type;
174}
fd936806 175
5badf10a
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176static struct type *
177sparc64_ccr_type (struct gdbarch *gdbarch)
178{
179 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
180
181 if (tdep->sparc64_ccr_type == NULL)
182 {
183 struct type *type;
184
185 type = arch_flags_type (gdbarch, "builtin_type_sparc64_ccr", 8);
186 append_flags_type_flag (type, 0, "icc.c");
187 append_flags_type_flag (type, 1, "icc.v");
188 append_flags_type_flag (type, 2, "icc.z");
189 append_flags_type_flag (type, 3, "icc.n");
190 append_flags_type_flag (type, 4, "xcc.c");
191 append_flags_type_flag (type, 5, "xcc.v");
192 append_flags_type_flag (type, 6, "xcc.z");
193 append_flags_type_flag (type, 7, "xcc.n");
194
195 tdep->sparc64_ccr_type = type;
196 }
197
198 return tdep->sparc64_ccr_type;
199}
200
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201static struct type *
202sparc64_fsr_type (struct gdbarch *gdbarch)
203{
204 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
205
206 if (!tdep->sparc64_fsr_type)
207 {
208 struct type *type;
209
e9bb382b 210 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fsr", 8);
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211 append_flags_type_flag (type, 0, "NXC");
212 append_flags_type_flag (type, 1, "DZC");
213 append_flags_type_flag (type, 2, "UFC");
214 append_flags_type_flag (type, 3, "OFC");
215 append_flags_type_flag (type, 4, "NVC");
216 append_flags_type_flag (type, 5, "NXA");
217 append_flags_type_flag (type, 6, "DZA");
218 append_flags_type_flag (type, 7, "UFA");
219 append_flags_type_flag (type, 8, "OFA");
220 append_flags_type_flag (type, 9, "NVA");
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221 append_flags_type_flag (type, 22, "NS");
222 append_flags_type_flag (type, 23, "NXM");
223 append_flags_type_flag (type, 24, "DZM");
224 append_flags_type_flag (type, 25, "UFM");
225 append_flags_type_flag (type, 26, "OFM");
226 append_flags_type_flag (type, 27, "NVM");
227
228 tdep->sparc64_fsr_type = type;
229 }
230
231 return tdep->sparc64_fsr_type;
232}
233
234static struct type *
235sparc64_fprs_type (struct gdbarch *gdbarch)
fd936806 236{
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UW
237 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
238
239 if (!tdep->sparc64_fprs_type)
240 {
241 struct type *type;
242
e9bb382b 243 type = arch_flags_type (gdbarch, "builtin_type_sparc64_fprs", 8);
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UW
244 append_flags_type_flag (type, 0, "DL");
245 append_flags_type_flag (type, 1, "DU");
246 append_flags_type_flag (type, 2, "FEF");
247
248 tdep->sparc64_fprs_type = type;
249 }
250
251 return tdep->sparc64_fprs_type;
fd936806 252}
8b39fe56 253
209bd28e 254
8b39fe56 255/* Register information. */
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256#define SPARC64_FPU_REGISTERS \
257 "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
258 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
259 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
260 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
261 "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
262 "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62"
263#define SPARC64_CP0_REGISTERS \
264 "pc", "npc", \
265 /* FIXME: Give "state" a name until we start using register groups. */ \
266 "state", \
267 "fsr", \
268 "fprs", \
269 "y"
8b39fe56 270
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271static const char *sparc64_fpu_register_names[] = { SPARC64_FPU_REGISTERS };
272static const char *sparc64_cp0_register_names[] = { SPARC64_CP0_REGISTERS };
273
6707b003 274static const char *sparc64_register_names[] =
8b39fe56 275{
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276 SPARC_CORE_REGISTERS,
277 SPARC64_FPU_REGISTERS,
278 SPARC64_CP0_REGISTERS
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279};
280
281/* Total number of registers. */
6707b003 282#define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names)
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283
284/* We provide the aliases %d0..%d62 and %q0..%q60 for the floating
285 registers as "psuedo" registers. */
286
6707b003 287static const char *sparc64_pseudo_register_names[] =
8b39fe56 288{
6707b003
UW
289 "cwp", "pstate", "asi", "ccr",
290
291 "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14",
292 "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30",
293 "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46",
294 "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62",
295
296 "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28",
297 "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60",
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298};
299
300/* Total number of pseudo registers. */
6707b003 301#define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names)
8b39fe56 302
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IR
303/* Return the name of pseudo register REGNUM. */
304
305static const char *
306sparc64_pseudo_register_name (struct gdbarch *gdbarch, int regnum)
307{
308 regnum -= gdbarch_num_regs (gdbarch);
309
310 if (regnum < SPARC64_NUM_PSEUDO_REGS)
311 return sparc64_pseudo_register_names[regnum];
312
313 internal_error (__FILE__, __LINE__,
314 _("sparc64_pseudo_register_name: bad register number %d"),
315 regnum);
316}
317
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318/* Return the name of register REGNUM. */
319
320static const char *
d93859e2 321sparc64_register_name (struct gdbarch *gdbarch, int regnum)
8b39fe56 322{
3f7b46f2
IR
323 if (tdesc_has_registers (gdbarch_target_desc (gdbarch)))
324 return tdesc_register_name (gdbarch, regnum);
325
7a36499a 326 if (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch))
6707b003 327 return sparc64_register_names[regnum];
8b39fe56 328
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IR
329 return sparc64_pseudo_register_name (gdbarch, regnum);
330}
331
332/* Return the GDB type object for the "standard" data type of data in
333 pseudo register REGNUM. */
334
335static struct type *
336sparc64_pseudo_register_type (struct gdbarch *gdbarch, int regnum)
337{
338 regnum -= gdbarch_num_regs (gdbarch);
339
340 if (regnum == SPARC64_CWP_REGNUM)
341 return builtin_type (gdbarch)->builtin_int64;
342 if (regnum == SPARC64_PSTATE_REGNUM)
343 return sparc64_pstate_type (gdbarch);
344 if (regnum == SPARC64_ASI_REGNUM)
345 return builtin_type (gdbarch)->builtin_int64;
346 if (regnum == SPARC64_CCR_REGNUM)
5badf10a 347 return sparc64_ccr_type (gdbarch);
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IR
348 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM)
349 return builtin_type (gdbarch)->builtin_double;
350 if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM)
351 return builtin_type (gdbarch)->builtin_long_double;
8b39fe56 352
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353 internal_error (__FILE__, __LINE__,
354 _("sparc64_pseudo_register_type: bad register number %d"),
355 regnum);
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356}
357
358/* Return the GDB type object for the "standard" data type of data in
c378eb4e 359 register REGNUM. */
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360
361static struct type *
362sparc64_register_type (struct gdbarch *gdbarch, int regnum)
363{
3f7b46f2
IR
364 if (tdesc_has_registers (gdbarch_target_desc (gdbarch)))
365 return tdesc_register_type (gdbarch, regnum);
366
6707b003 367 /* Raw registers. */
6707b003 368 if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM)
0dfff4cb 369 return builtin_type (gdbarch)->builtin_data_ptr;
6707b003 370 if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM)
df4df182 371 return builtin_type (gdbarch)->builtin_int64;
6707b003 372 if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
0dfff4cb 373 return builtin_type (gdbarch)->builtin_float;
6707b003 374 if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM)
0dfff4cb 375 return builtin_type (gdbarch)->builtin_double;
6707b003 376 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
0dfff4cb 377 return builtin_type (gdbarch)->builtin_func_ptr;
6707b003
UW
378 /* This raw register contains the contents of %cwp, %pstate, %asi
379 and %ccr as laid out in a %tstate register. */
380 if (regnum == SPARC64_STATE_REGNUM)
df4df182 381 return builtin_type (gdbarch)->builtin_int64;
6707b003 382 if (regnum == SPARC64_FSR_REGNUM)
209bd28e 383 return sparc64_fsr_type (gdbarch);
6707b003 384 if (regnum == SPARC64_FPRS_REGNUM)
209bd28e 385 return sparc64_fprs_type (gdbarch);
6707b003
UW
386 /* "Although Y is a 64-bit register, its high-order 32 bits are
387 reserved and always read as 0." */
388 if (regnum == SPARC64_Y_REGNUM)
df4df182 389 return builtin_type (gdbarch)->builtin_int64;
6707b003
UW
390
391 /* Pseudo registers. */
7a36499a
IR
392 if (regnum >= gdbarch_num_regs (gdbarch))
393 return sparc64_pseudo_register_type (gdbarch, regnum);
6707b003
UW
394
395 internal_error (__FILE__, __LINE__, _("invalid regnum"));
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396}
397
05d1431c 398static enum register_status
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399sparc64_pseudo_register_read (struct gdbarch *gdbarch,
400 struct regcache *regcache,
e1613aba 401 int regnum, gdb_byte *buf)
8b39fe56 402{
e17a4113 403 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
05d1431c
PA
404 enum register_status status;
405
7a36499a 406 regnum -= gdbarch_num_regs (gdbarch);
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407
408 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
409 {
410 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
05d1431c
PA
411 status = regcache_raw_read (regcache, regnum, buf);
412 if (status == REG_VALID)
413 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
414 return status;
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415 }
416 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
417 {
418 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
05d1431c 419 return regcache_raw_read (regcache, regnum, buf);
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420 }
421 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
422 {
423 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
05d1431c
PA
424
425 status = regcache_raw_read (regcache, regnum, buf);
426 if (status == REG_VALID)
427 status = regcache_raw_read (regcache, regnum + 1, buf + 4);
428 if (status == REG_VALID)
429 status = regcache_raw_read (regcache, regnum + 2, buf + 8);
430 if (status == REG_VALID)
431 status = regcache_raw_read (regcache, regnum + 3, buf + 12);
432
433 return status;
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434 }
435 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
436 {
437 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
05d1431c
PA
438
439 status = regcache_raw_read (regcache, regnum, buf);
440 if (status == REG_VALID)
441 status = regcache_raw_read (regcache, regnum + 1, buf + 8);
442
443 return status;
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444 }
445 else if (regnum == SPARC64_CWP_REGNUM
446 || regnum == SPARC64_PSTATE_REGNUM
447 || regnum == SPARC64_ASI_REGNUM
448 || regnum == SPARC64_CCR_REGNUM)
449 {
450 ULONGEST state;
451
05d1431c
PA
452 status = regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
453 if (status != REG_VALID)
454 return status;
455
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456 switch (regnum)
457 {
3567a8ea 458 case SPARC64_CWP_REGNUM:
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459 state = (state >> 0) & ((1 << 5) - 1);
460 break;
3567a8ea 461 case SPARC64_PSTATE_REGNUM:
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462 state = (state >> 8) & ((1 << 12) - 1);
463 break;
3567a8ea 464 case SPARC64_ASI_REGNUM:
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465 state = (state >> 24) & ((1 << 8) - 1);
466 break;
3567a8ea 467 case SPARC64_CCR_REGNUM:
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468 state = (state >> 32) & ((1 << 8) - 1);
469 break;
470 }
e17a4113 471 store_unsigned_integer (buf, 8, byte_order, state);
8b39fe56 472 }
05d1431c
PA
473
474 return REG_VALID;
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475}
476
477static void
478sparc64_pseudo_register_write (struct gdbarch *gdbarch,
479 struct regcache *regcache,
e1613aba 480 int regnum, const gdb_byte *buf)
8b39fe56 481{
e17a4113 482 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
7a36499a
IR
483
484 regnum -= gdbarch_num_regs (gdbarch);
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485
486 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM)
487 {
488 regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM);
489 regcache_raw_write (regcache, regnum, buf);
e1613aba 490 regcache_raw_write (regcache, regnum + 1, buf + 4);
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MK
491 }
492 else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM)
493 {
494 regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM);
495 regcache_raw_write (regcache, regnum, buf);
496 }
497 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM)
498 {
499 regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM);
500 regcache_raw_write (regcache, regnum, buf);
e1613aba
MK
501 regcache_raw_write (regcache, regnum + 1, buf + 4);
502 regcache_raw_write (regcache, regnum + 2, buf + 8);
503 regcache_raw_write (regcache, regnum + 3, buf + 12);
8b39fe56
MK
504 }
505 else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM)
506 {
507 regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM);
508 regcache_raw_write (regcache, regnum, buf);
e1613aba 509 regcache_raw_write (regcache, regnum + 1, buf + 8);
8b39fe56 510 }
3567a8ea
MK
511 else if (regnum == SPARC64_CWP_REGNUM
512 || regnum == SPARC64_PSTATE_REGNUM
513 || regnum == SPARC64_ASI_REGNUM
514 || regnum == SPARC64_CCR_REGNUM)
515 {
516 ULONGEST state, bits;
517
518 regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state);
e17a4113 519 bits = extract_unsigned_integer (buf, 8, byte_order);
3567a8ea
MK
520 switch (regnum)
521 {
522 case SPARC64_CWP_REGNUM:
523 state |= ((bits & ((1 << 5) - 1)) << 0);
524 break;
525 case SPARC64_PSTATE_REGNUM:
526 state |= ((bits & ((1 << 12) - 1)) << 8);
527 break;
528 case SPARC64_ASI_REGNUM:
529 state |= ((bits & ((1 << 8) - 1)) << 24);
530 break;
531 case SPARC64_CCR_REGNUM:
532 state |= ((bits & ((1 << 8) - 1)) << 32);
533 break;
534 }
535 regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state);
536 }
8b39fe56 537}
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538\f
539
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540/* Return PC of first real instruction of the function starting at
541 START_PC. */
542
543static CORE_ADDR
6093d2eb 544sparc64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc)
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MK
545{
546 struct symtab_and_line sal;
547 CORE_ADDR func_start, func_end;
386c036b 548 struct sparc_frame_cache cache;
8b39fe56
MK
549
550 /* This is the preferred method, find the end of the prologue by
551 using the debugging information. */
552 if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end))
553 {
554 sal = find_pc_line (func_start, 0);
555
556 if (sal.end < func_end
557 && start_pc <= sal.end)
558 return sal.end;
559 }
560
be8626e0
MD
561 return sparc_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffULL,
562 &cache);
8b39fe56
MK
563}
564
565/* Normal frames. */
566
386c036b 567static struct sparc_frame_cache *
236369e7 568sparc64_frame_cache (struct frame_info *this_frame, void **this_cache)
8b39fe56 569{
236369e7 570 return sparc_frame_cache (this_frame, this_cache);
8b39fe56
MK
571}
572
573static void
236369e7 574sparc64_frame_this_id (struct frame_info *this_frame, void **this_cache,
8b39fe56
MK
575 struct frame_id *this_id)
576{
386c036b 577 struct sparc_frame_cache *cache =
236369e7 578 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK
579
580 /* This marks the outermost frame. */
581 if (cache->base == 0)
582 return;
583
584 (*this_id) = frame_id_build (cache->base, cache->pc);
585}
586
236369e7
JB
587static struct value *
588sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache,
589 int regnum)
8b39fe56 590{
e17a4113 591 struct gdbarch *gdbarch = get_frame_arch (this_frame);
386c036b 592 struct sparc_frame_cache *cache =
236369e7 593 sparc64_frame_cache (this_frame, this_cache);
8b39fe56
MK
594
595 if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM)
596 {
236369e7 597 CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0;
8b39fe56 598
369c397b
JB
599 regnum =
600 (cache->copied_regs_mask & 0x80) ? SPARC_I7_REGNUM : SPARC_O7_REGNUM;
236369e7
JB
601 pc += get_frame_register_unsigned (this_frame, regnum) + 8;
602 return frame_unwind_got_constant (this_frame, regnum, pc);
8b39fe56
MK
603 }
604
f700a364
MK
605 /* Handle StackGhost. */
606 {
e17a4113 607 ULONGEST wcookie = sparc_fetch_wcookie (gdbarch);
f700a364
MK
608
609 if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM)
610 {
236369e7
JB
611 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
612 ULONGEST i7;
613
614 /* Read the value in from memory. */
615 i7 = get_frame_memory_unsigned (this_frame, addr, 8);
616 return frame_unwind_got_constant (this_frame, regnum, i7 ^ wcookie);
f700a364
MK
617 }
618 }
619
369c397b 620 /* The previous frame's `local' and `in' registers may have been saved
8b39fe56 621 in the register save area. */
369c397b
JB
622 if (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM
623 && (cache->saved_regs_mask & (1 << (regnum - SPARC_L0_REGNUM))))
8b39fe56 624 {
236369e7 625 CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8;
8b39fe56 626
236369e7 627 return frame_unwind_got_memory (this_frame, regnum, addr);
8b39fe56
MK
628 }
629
369c397b
JB
630 /* The previous frame's `out' registers may be accessible as the current
631 frame's `in' registers. */
632 if (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM
633 && (cache->copied_regs_mask & (1 << (regnum - SPARC_O0_REGNUM))))
8b39fe56
MK
634 regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM);
635
236369e7 636 return frame_unwind_got_register (this_frame, regnum, regnum);
8b39fe56
MK
637}
638
639static const struct frame_unwind sparc64_frame_unwind =
640{
641 NORMAL_FRAME,
8fbca658 642 default_frame_unwind_stop_reason,
8b39fe56 643 sparc64_frame_this_id,
236369e7
JB
644 sparc64_frame_prev_register,
645 NULL,
646 default_frame_sniffer
8b39fe56 647};
8b39fe56
MK
648\f
649
650static CORE_ADDR
236369e7 651sparc64_frame_base_address (struct frame_info *this_frame, void **this_cache)
8b39fe56 652{
386c036b 653 struct sparc_frame_cache *cache =
236369e7 654 sparc64_frame_cache (this_frame, this_cache);
8b39fe56 655
5b2d44a0 656 return cache->base;
8b39fe56
MK
657}
658
659static const struct frame_base sparc64_frame_base =
660{
661 &sparc64_frame_unwind,
662 sparc64_frame_base_address,
663 sparc64_frame_base_address,
664 sparc64_frame_base_address
665};
8b39fe56
MK
666\f
667/* Check whether TYPE must be 16-byte aligned. */
668
669static int
670sparc64_16_byte_align_p (struct type *type)
671{
672 if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16)
673 return 1;
674
675 if (sparc64_structure_or_union_p (type))
676 {
677 int i;
678
679 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK
680 {
681 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
682
683 if (sparc64_16_byte_align_p (subtype))
684 return 1;
685 }
8b39fe56
MK
686 }
687
688 return 0;
689}
690
691/* Store floating fields of element ELEMENT of an "parameter array"
692 that has type TYPE and is stored at BITPOS in VALBUF in the
693 apropriate registers of REGCACHE. This function can be called
694 recursively and therefore handles floating types in addition to
695 structures. */
696
697static void
698sparc64_store_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 699 const gdb_byte *valbuf, int element, int bitpos)
8b39fe56 700{
7a36499a 701 struct gdbarch *gdbarch = get_regcache_arch (regcache);
fe10a582
DM
702 int len = TYPE_LENGTH (type);
703
8b39fe56
MK
704 gdb_assert (element < 16);
705
fe10a582
DM
706 if (sparc64_floating_p (type)
707 || (sparc64_complex_floating_p (type) && len <= 16))
8b39fe56 708 {
8b39fe56
MK
709 int regnum;
710
711 if (len == 16)
712 {
713 gdb_assert (bitpos == 0);
714 gdb_assert ((element % 2) == 0);
715
7a36499a 716 regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM + element / 2;
8b39fe56
MK
717 regcache_cooked_write (regcache, regnum, valbuf);
718 }
719 else if (len == 8)
720 {
721 gdb_assert (bitpos == 0 || bitpos == 64);
722
7a36499a
IR
723 regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM
724 + element + bitpos / 64;
8b39fe56
MK
725 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
726 }
727 else
728 {
729 gdb_assert (len == 4);
730 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128);
731
732 regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32;
733 regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8));
734 }
735 }
736 else if (sparc64_structure_or_union_p (type))
737 {
738 int i;
739
740 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK
741 {
742 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
743 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
744
745 sparc64_store_floating_fields (regcache, subtype, valbuf,
746 element, subpos);
747 }
200cc553
MK
748
749 /* GCC has an interesting bug. If TYPE is a structure that has
750 a single `float' member, GCC doesn't treat it as a structure
751 at all, but rather as an ordinary `float' argument. This
752 argument will be stored in %f1, as required by the psABI.
753 However, as a member of a structure the psABI requires it to
5154b0cd
MK
754 be stored in %f0. This bug is present in GCC 3.3.2, but
755 probably in older releases to. To appease GCC, if a
756 structure has only a single `float' member, we store its
757 value in %f1 too (we already have stored in %f0). */
200cc553
MK
758 if (TYPE_NFIELDS (type) == 1)
759 {
760 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0));
761
762 if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4)
763 regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf);
764 }
8b39fe56
MK
765 }
766}
767
768/* Fetch floating fields from a variable of type TYPE from the
769 appropriate registers for BITPOS in REGCACHE and store it at BITPOS
770 in VALBUF. This function can be called recursively and therefore
771 handles floating types in addition to structures. */
772
773static void
774sparc64_extract_floating_fields (struct regcache *regcache, struct type *type,
e1613aba 775 gdb_byte *valbuf, int bitpos)
8b39fe56 776{
7a36499a
IR
777 struct gdbarch *gdbarch = get_regcache_arch (regcache);
778
8b39fe56
MK
779 if (sparc64_floating_p (type))
780 {
781 int len = TYPE_LENGTH (type);
782 int regnum;
783
784 if (len == 16)
785 {
786 gdb_assert (bitpos == 0 || bitpos == 128);
787
7a36499a
IR
788 regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM
789 + bitpos / 128;
8b39fe56
MK
790 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
791 }
792 else if (len == 8)
793 {
794 gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256);
795
7a36499a 796 regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM + bitpos / 64;
8b39fe56
MK
797 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
798 }
799 else
800 {
801 gdb_assert (len == 4);
802 gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256);
803
804 regnum = SPARC_F0_REGNUM + bitpos / 32;
805 regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8));
806 }
807 }
808 else if (sparc64_structure_or_union_p (type))
809 {
810 int i;
811
812 for (i = 0; i < TYPE_NFIELDS (type); i++)
60af1db2
MK
813 {
814 struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i));
815 int subpos = bitpos + TYPE_FIELD_BITPOS (type, i);
816
817 sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos);
818 }
8b39fe56
MK
819 }
820}
821
822/* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is
823 non-zero) in REGCACHE and on the stack (starting from address SP). */
824
825static CORE_ADDR
826sparc64_store_arguments (struct regcache *regcache, int nargs,
827 struct value **args, CORE_ADDR sp,
828 int struct_return, CORE_ADDR struct_addr)
829{
df4df182 830 struct gdbarch *gdbarch = get_regcache_arch (regcache);
8b39fe56
MK
831 /* Number of extended words in the "parameter array". */
832 int num_elements = 0;
833 int element = 0;
834 int i;
835
836 /* Take BIAS into account. */
837 sp += BIAS;
838
839 /* First we calculate the number of extended words in the "parameter
840 array". While doing so we also convert some of the arguments. */
841
842 if (struct_return)
843 num_elements++;
844
845 for (i = 0; i < nargs; i++)
846 {
4991999e 847 struct type *type = value_type (args[i]);
8b39fe56
MK
848 int len = TYPE_LENGTH (type);
849
fb57d452
MK
850 if (sparc64_structure_or_union_p (type)
851 || (sparc64_complex_floating_p (type) && len == 32))
8b39fe56
MK
852 {
853 /* Structure or Union arguments. */
854 if (len <= 16)
855 {
856 if (num_elements % 2 && sparc64_16_byte_align_p (type))
857 num_elements++;
858 num_elements += ((len + 7) / 8);
859 }
860 else
861 {
862 /* The psABI says that "Structures or unions larger than
863 sixteen bytes are copied by the caller and passed
864 indirectly; the caller will pass the address of a
865 correctly aligned structure value. This sixty-four
866 bit address will occupy one word in the parameter
867 array, and may be promoted to an %o register like any
868 other pointer value." Allocate memory for these
869 values on the stack. */
870 sp -= len;
871
872 /* Use 16-byte alignment for these values. That's
873 always correct, and wasting a few bytes shouldn't be
874 a problem. */
875 sp &= ~0xf;
876
0fd88904 877 write_memory (sp, value_contents (args[i]), len);
8b39fe56
MK
878 args[i] = value_from_pointer (lookup_pointer_type (type), sp);
879 num_elements++;
880 }
881 }
cdc7b32f 882 else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type))
8b39fe56
MK
883 {
884 /* Floating arguments. */
8b39fe56
MK
885 if (len == 16)
886 {
887 /* The psABI says that "Each quad-precision parameter
888 value will be assigned to two extended words in the
889 parameter array. */
890 num_elements += 2;
891
892 /* The psABI says that "Long doubles must be
893 quad-aligned, and thus a hole might be introduced
894 into the parameter array to force alignment." Skip
895 an element if necessary. */
49caec94 896 if ((num_elements % 2) && sparc64_16_byte_align_p (type))
8b39fe56
MK
897 num_elements++;
898 }
899 else
900 num_elements++;
901 }
902 else
903 {
904 /* Integral and pointer arguments. */
905 gdb_assert (sparc64_integral_or_pointer_p (type));
906
907 /* The psABI says that "Each argument value of integral type
908 smaller than an extended word will be widened by the
909 caller to an extended word according to the signed-ness
910 of the argument type." */
911 if (len < 8)
df4df182
UW
912 args[i] = value_cast (builtin_type (gdbarch)->builtin_int64,
913 args[i]);
8b39fe56
MK
914 num_elements++;
915 }
916 }
917
918 /* Allocate the "parameter array". */
919 sp -= num_elements * 8;
920
921 /* The psABI says that "Every stack frame must be 16-byte aligned." */
922 sp &= ~0xf;
923
924 /* Now we store the arguments in to the "paramater array". Some
925 Integer or Pointer arguments and Structure or Union arguments
926 will be passed in %o registers. Some Floating arguments and
927 floating members of structures are passed in floating-point
928 registers. However, for functions with variable arguments,
929 floating arguments are stored in an %0 register, and for
930 functions without a prototype floating arguments are stored in
931 both a floating-point and an %o registers, or a floating-point
932 register and memory. To simplify the logic here we always pass
933 arguments in memory, an %o register, and a floating-point
934 register if appropriate. This should be no problem since the
935 contents of any unused memory or registers in the "parameter
936 array" are undefined. */
937
938 if (struct_return)
939 {
940 regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr);
941 element++;
942 }
943
944 for (i = 0; i < nargs; i++)
945 {
e1613aba 946 const gdb_byte *valbuf = value_contents (args[i]);
4991999e 947 struct type *type = value_type (args[i]);
8b39fe56
MK
948 int len = TYPE_LENGTH (type);
949 int regnum = -1;
e1613aba 950 gdb_byte buf[16];
8b39fe56 951
fb57d452
MK
952 if (sparc64_structure_or_union_p (type)
953 || (sparc64_complex_floating_p (type) && len == 32))
8b39fe56 954 {
49caec94 955 /* Structure, Union or long double Complex arguments. */
8b39fe56
MK
956 gdb_assert (len <= 16);
957 memset (buf, 0, sizeof (buf));
cfcb22a5
SM
958 memcpy (buf, valbuf, len);
959 valbuf = buf;
8b39fe56
MK
960
961 if (element % 2 && sparc64_16_byte_align_p (type))
962 element++;
963
964 if (element < 6)
965 {
966 regnum = SPARC_O0_REGNUM + element;
967 if (len > 8 && element < 5)
968 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
969 }
970
971 if (element < 16)
972 sparc64_store_floating_fields (regcache, type, valbuf, element, 0);
973 }
49caec94
JM
974 else if (sparc64_complex_floating_p (type))
975 {
976 /* Float Complex or double Complex arguments. */
977 if (element < 16)
978 {
7a36499a 979 regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM + element;
49caec94
JM
980
981 if (len == 16)
982 {
7a36499a 983 if (regnum < gdbarch_num_regs (gdbarch) + SPARC64_D30_REGNUM)
49caec94 984 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
7a36499a 985 if (regnum < gdbarch_num_regs (gdbarch) + SPARC64_D10_REGNUM)
49caec94
JM
986 regcache_cooked_write (regcache,
987 SPARC_O0_REGNUM + element + 1,
988 valbuf + 8);
989 }
990 }
991 }
992 else if (sparc64_floating_p (type))
8b39fe56
MK
993 {
994 /* Floating arguments. */
995 if (len == 16)
996 {
997 if (element % 2)
998 element++;
999 if (element < 16)
7a36499a
IR
1000 regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM
1001 + element / 2;
8b39fe56
MK
1002 }
1003 else if (len == 8)
1004 {
1005 if (element < 16)
7a36499a
IR
1006 regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM
1007 + element;
8b39fe56 1008 }
fe10a582 1009 else if (len == 4)
8b39fe56
MK
1010 {
1011 /* The psABI says "Each single-precision parameter value
1012 will be assigned to one extended word in the
1013 parameter array, and right-justified within that
cdc7b32f 1014 word; the left half (even float register) is
8b39fe56
MK
1015 undefined." Even though the psABI says that "the
1016 left half is undefined", set it to zero here. */
1017 memset (buf, 0, 4);
8ada74e3
MK
1018 memcpy (buf + 4, valbuf, 4);
1019 valbuf = buf;
8b39fe56
MK
1020 len = 8;
1021 if (element < 16)
7a36499a
IR
1022 regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM
1023 + element;
8b39fe56
MK
1024 }
1025 }
1026 else
1027 {
1028 /* Integral and pointer arguments. */
1029 gdb_assert (len == 8);
1030 if (element < 6)
1031 regnum = SPARC_O0_REGNUM + element;
1032 }
1033
1034 if (regnum != -1)
1035 {
1036 regcache_cooked_write (regcache, regnum, valbuf);
1037
1038 /* If we're storing the value in a floating-point register,
1039 also store it in the corresponding %0 register(s). */
7a36499a
IR
1040 if (regnum >= gdbarch_num_regs (gdbarch))
1041 {
1042 regnum -= gdbarch_num_regs (gdbarch);
1043
1044 if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM)
1045 {
1046 gdb_assert (element < 6);
1047 regnum = SPARC_O0_REGNUM + element;
1048 regcache_cooked_write (regcache, regnum, valbuf);
1049 }
1050 else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM)
1051 {
1052 gdb_assert (element < 5);
1053 regnum = SPARC_O0_REGNUM + element;
1054 regcache_cooked_write (regcache, regnum, valbuf);
1055 regcache_cooked_write (regcache, regnum + 1, valbuf + 8);
1056 }
1057 }
8b39fe56
MK
1058 }
1059
c4f2d4d7 1060 /* Always store the argument in memory. */
8b39fe56
MK
1061 write_memory (sp + element * 8, valbuf, len);
1062 element += ((len + 7) / 8);
1063 }
1064
1065 gdb_assert (element == num_elements);
1066
1067 /* Take BIAS into account. */
1068 sp -= BIAS;
1069 return sp;
1070}
1071
49a45ecf
JB
1072static CORE_ADDR
1073sparc64_frame_align (struct gdbarch *gdbarch, CORE_ADDR address)
1074{
1075 /* The ABI requires 16-byte alignment. */
1076 return address & ~0xf;
1077}
1078
8b39fe56 1079static CORE_ADDR
7d9b040b 1080sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
8b39fe56
MK
1081 struct regcache *regcache, CORE_ADDR bp_addr,
1082 int nargs, struct value **args, CORE_ADDR sp,
1083 int struct_return, CORE_ADDR struct_addr)
1084{
1085 /* Set return address. */
1086 regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8);
1087
1088 /* Set up function arguments. */
1089 sp = sparc64_store_arguments (regcache, nargs, args, sp,
1090 struct_return, struct_addr);
1091
1092 /* Allocate the register save area. */
1093 sp -= 16 * 8;
1094
1095 /* Stack should be 16-byte aligned at this point. */
3567a8ea 1096 gdb_assert ((sp + BIAS) % 16 == 0);
8b39fe56
MK
1097
1098 /* Finally, update the stack pointer. */
1099 regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp);
1100
5b2d44a0 1101 return sp + BIAS;
8b39fe56
MK
1102}
1103\f
1104
1105/* Extract from an array REGBUF containing the (raw) register state, a
1106 function return value of TYPE, and copy that into VALBUF. */
1107
1108static void
1109sparc64_extract_return_value (struct type *type, struct regcache *regcache,
e1613aba 1110 gdb_byte *valbuf)
8b39fe56
MK
1111{
1112 int len = TYPE_LENGTH (type);
e1613aba 1113 gdb_byte buf[32];
8b39fe56
MK
1114 int i;
1115
1116 if (sparc64_structure_or_union_p (type))
1117 {
1118 /* Structure or Union return values. */
1119 gdb_assert (len <= 32);
1120
1121 for (i = 0; i < ((len + 7) / 8); i++)
1122 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1123 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1124 sparc64_extract_floating_fields (regcache, type, buf, 0);
1125 memcpy (valbuf, buf, len);
1126 }
cdc7b32f 1127 else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type))
8b39fe56
MK
1128 {
1129 /* Floating return values. */
1130 for (i = 0; i < len / 4; i++)
1131 regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1132 memcpy (valbuf, buf, len);
1133 }
4bd87714
JB
1134 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1135 {
1136 /* Small arrays are returned the same way as small structures. */
1137 gdb_assert (len <= 32);
1138
1139 for (i = 0; i < ((len + 7) / 8); i++)
1140 regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1141 memcpy (valbuf, buf, len);
1142 }
8b39fe56
MK
1143 else
1144 {
1145 /* Integral and pointer return values. */
1146 gdb_assert (sparc64_integral_or_pointer_p (type));
1147
1148 /* Just stripping off any unused bytes should preserve the
1149 signed-ness just fine. */
1150 regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf);
1151 memcpy (valbuf, buf + 8 - len, len);
1152 }
1153}
1154
1155/* Write into the appropriate registers a function return value stored
1156 in VALBUF of type TYPE. */
1157
1158static void
1159sparc64_store_return_value (struct type *type, struct regcache *regcache,
e1613aba 1160 const gdb_byte *valbuf)
8b39fe56
MK
1161{
1162 int len = TYPE_LENGTH (type);
e1613aba 1163 gdb_byte buf[16];
8b39fe56
MK
1164 int i;
1165
1166 if (sparc64_structure_or_union_p (type))
1167 {
1168 /* Structure or Union return values. */
1169 gdb_assert (len <= 32);
1170
1171 /* Simplify matters by storing the complete value (including
1172 floating members) into %o0 and %o1. Floating members are
1173 also store in the appropriate floating-point registers. */
1174 memset (buf, 0, sizeof (buf));
1175 memcpy (buf, valbuf, len);
1176 for (i = 0; i < ((len + 7) / 8); i++)
60af1db2 1177 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
8b39fe56
MK
1178 if (TYPE_CODE (type) != TYPE_CODE_UNION)
1179 sparc64_store_floating_fields (regcache, type, buf, 0, 0);
1180 }
fe10a582 1181 else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type))
8b39fe56
MK
1182 {
1183 /* Floating return values. */
1184 memcpy (buf, valbuf, len);
1185 for (i = 0; i < len / 4; i++)
1186 regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4);
1187 }
4bd87714
JB
1188 else if (TYPE_CODE (type) == TYPE_CODE_ARRAY)
1189 {
1190 /* Small arrays are returned the same way as small structures. */
1191 gdb_assert (len <= 32);
1192
1193 memset (buf, 0, sizeof (buf));
1194 memcpy (buf, valbuf, len);
1195 for (i = 0; i < ((len + 7) / 8); i++)
1196 regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8);
1197 }
8b39fe56
MK
1198 else
1199 {
1200 /* Integral and pointer return values. */
1201 gdb_assert (sparc64_integral_or_pointer_p (type));
1202
1203 /* ??? Do we need to do any sign-extension here? */
1204 memset (buf, 0, 8);
1205 memcpy (buf + 8 - len, valbuf, len);
1206 regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf);
1207 }
1208}
1209
60af1db2 1210static enum return_value_convention
6a3a010b 1211sparc64_return_value (struct gdbarch *gdbarch, struct value *function,
c055b101
CV
1212 struct type *type, struct regcache *regcache,
1213 gdb_byte *readbuf, const gdb_byte *writebuf)
8b39fe56 1214{
60af1db2
MK
1215 if (TYPE_LENGTH (type) > 32)
1216 return RETURN_VALUE_STRUCT_CONVENTION;
1217
1218 if (readbuf)
1219 sparc64_extract_return_value (type, regcache, readbuf);
1220 if (writebuf)
1221 sparc64_store_return_value (type, regcache, writebuf);
1222
1223 return RETURN_VALUE_REGISTER_CONVENTION;
8b39fe56 1224}
8b39fe56 1225\f
8b39fe56 1226
02a71ae8
MK
1227static void
1228sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum,
aff37fc1 1229 struct dwarf2_frame_state_reg *reg,
4a4e5149 1230 struct frame_info *this_frame)
02a71ae8
MK
1231{
1232 switch (regnum)
1233 {
1234 case SPARC_G0_REGNUM:
1235 /* Since %g0 is always zero, there is no point in saving it, and
1236 people will be inclined omit it from the CFI. Make sure we
1237 don't warn about that. */
1238 reg->how = DWARF2_FRAME_REG_SAME_VALUE;
1239 break;
1240 case SPARC_SP_REGNUM:
1241 reg->how = DWARF2_FRAME_REG_CFA;
1242 break;
1243 case SPARC64_PC_REGNUM:
1244 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1245 reg->loc.offset = 8;
1246 break;
1247 case SPARC64_NPC_REGNUM:
1248 reg->how = DWARF2_FRAME_REG_RA_OFFSET;
1249 reg->loc.offset = 12;
1250 break;
1251 }
1252}
1253
8b39fe56 1254void
386c036b 1255sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
8b39fe56 1256{
386c036b 1257 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
8b39fe56 1258
386c036b
MK
1259 tdep->pc_regnum = SPARC64_PC_REGNUM;
1260 tdep->npc_regnum = SPARC64_NPC_REGNUM;
3f7b46f2
IR
1261 tdep->fpu_register_names = sparc64_fpu_register_names;
1262 tdep->fpu_registers_num = ARRAY_SIZE (sparc64_fpu_register_names);
1263 tdep->cp0_register_names = sparc64_cp0_register_names;
1264 tdep->cp0_registers_num = ARRAY_SIZE (sparc64_cp0_register_names);
8b39fe56 1265
386c036b 1266 /* This is what all the fuss is about. */
8b39fe56
MK
1267 set_gdbarch_long_bit (gdbarch, 64);
1268 set_gdbarch_long_long_bit (gdbarch, 64);
1269 set_gdbarch_ptr_bit (gdbarch, 64);
8b39fe56
MK
1270
1271 set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS);
1272 set_gdbarch_register_name (gdbarch, sparc64_register_name);
1273 set_gdbarch_register_type (gdbarch, sparc64_register_type);
1274 set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS);
3f7b46f2
IR
1275 set_tdesc_pseudo_register_name (gdbarch, sparc64_pseudo_register_name);
1276 set_tdesc_pseudo_register_type (gdbarch, sparc64_pseudo_register_type);
8b39fe56
MK
1277 set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read);
1278 set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write);
1279
1280 /* Register numbers of various important registers. */
8b39fe56 1281 set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */
8b39fe56
MK
1282
1283 /* Call dummy code. */
49a45ecf 1284 set_gdbarch_frame_align (gdbarch, sparc64_frame_align);
386c036b
MK
1285 set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT);
1286 set_gdbarch_push_dummy_code (gdbarch, NULL);
8b39fe56
MK
1287 set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call);
1288
60af1db2 1289 set_gdbarch_return_value (gdbarch, sparc64_return_value);
386c036b
MK
1290 set_gdbarch_stabs_argument_has_addr
1291 (gdbarch, default_stabs_argument_has_addr);
8b39fe56
MK
1292
1293 set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue);
c9cf6e20 1294 set_gdbarch_stack_frame_destroyed_p (gdbarch, sparc_stack_frame_destroyed_p);
8b39fe56 1295
02a71ae8
MK
1296 /* Hook in the DWARF CFI frame unwinder. */
1297 dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg);
1298 /* FIXME: kettenis/20050423: Don't enable the unwinder until the
1299 StackGhost issues have been resolved. */
1300
236369e7 1301 frame_unwind_append_unwinder (gdbarch, &sparc64_frame_unwind);
8b39fe56 1302 frame_base_set_default (gdbarch, &sparc64_frame_base);
386c036b
MK
1303}
1304\f
8b39fe56 1305
386c036b 1306/* Helper functions for dealing with register sets. */
8b39fe56 1307
386c036b
MK
1308#define TSTATE_CWP 0x000000000000001fULL
1309#define TSTATE_ICC 0x0000000f00000000ULL
1310#define TSTATE_XCC 0x000000f000000000ULL
8b39fe56 1311
386c036b
MK
1312#define PSR_S 0x00000080
1313#define PSR_ICC 0x00f00000
1314#define PSR_VERS 0x0f000000
1315#define PSR_IMPL 0xf0000000
1316#define PSR_V8PLUS 0xff000000
1317#define PSR_XCC 0x000f0000
8b39fe56 1318
3567a8ea 1319void
b4fd25c9 1320sparc64_supply_gregset (const struct sparc_gregmap *gregmap,
386c036b
MK
1321 struct regcache *regcache,
1322 int regnum, const void *gregs)
8b39fe56 1323{
e17a4113
UW
1324 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1325 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1326 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
19ba03f4 1327 const gdb_byte *regs = (const gdb_byte *) gregs;
22e74ef9 1328 gdb_byte zero[8] = { 0 };
8b39fe56
MK
1329 int i;
1330
386c036b 1331 if (sparc32)
8b39fe56 1332 {
386c036b
MK
1333 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1334 {
b4fd25c9 1335 int offset = gregmap->r_tstate_offset;
386c036b 1336 ULONGEST tstate, psr;
e1613aba 1337 gdb_byte buf[4];
386c036b 1338
e17a4113 1339 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b
MK
1340 psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12)
1341 | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS);
e17a4113 1342 store_unsigned_integer (buf, 4, byte_order, psr);
386c036b
MK
1343 regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf);
1344 }
1345
1346 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1347 regcache_raw_supply (regcache, SPARC32_PC_REGNUM,
b4fd25c9 1348 regs + gregmap->r_pc_offset + 4);
386c036b
MK
1349
1350 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1351 regcache_raw_supply (regcache, SPARC32_NPC_REGNUM,
b4fd25c9 1352 regs + gregmap->r_npc_offset + 4);
8b39fe56 1353
386c036b 1354 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1355 {
b4fd25c9 1356 int offset = gregmap->r_y_offset + 8 - gregmap->r_y_size;
386c036b 1357 regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK
1358 }
1359 }
1360 else
1361 {
386c036b
MK
1362 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1363 regcache_raw_supply (regcache, SPARC64_STATE_REGNUM,
b4fd25c9 1364 regs + gregmap->r_tstate_offset);
8b39fe56 1365
386c036b
MK
1366 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1367 regcache_raw_supply (regcache, SPARC64_PC_REGNUM,
b4fd25c9 1368 regs + gregmap->r_pc_offset);
386c036b
MK
1369
1370 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1371 regcache_raw_supply (regcache, SPARC64_NPC_REGNUM,
b4fd25c9 1372 regs + gregmap->r_npc_offset);
386c036b
MK
1373
1374 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1375 {
e1613aba 1376 gdb_byte buf[8];
386c036b
MK
1377
1378 memset (buf, 0, 8);
b4fd25c9
AA
1379 memcpy (buf + 8 - gregmap->r_y_size,
1380 regs + gregmap->r_y_offset, gregmap->r_y_size);
386c036b 1381 regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf);
3567a8ea 1382 }
8b39fe56 1383
386c036b 1384 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
b4fd25c9 1385 && gregmap->r_fprs_offset != -1)
386c036b 1386 regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM,
b4fd25c9 1387 regs + gregmap->r_fprs_offset);
386c036b
MK
1388 }
1389
1390 if (regnum == SPARC_G0_REGNUM || regnum == -1)
22e74ef9 1391 regcache_raw_supply (regcache, SPARC_G0_REGNUM, &zero);
386c036b
MK
1392
1393 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1394 {
b4fd25c9 1395 int offset = gregmap->r_g1_offset;
386c036b
MK
1396
1397 if (sparc32)
1398 offset += 4;
1399
1400 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
8b39fe56 1401 {
3567a8ea 1402 if (regnum == i || regnum == -1)
386c036b
MK
1403 regcache_raw_supply (regcache, i, regs + offset);
1404 offset += 8;
1405 }
1406 }
1407
1408 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1409 {
1410 /* Not all of the register set variants include Locals and
1411 Inputs. For those that don't, we read them off the stack. */
b4fd25c9 1412 if (gregmap->r_l0_offset == -1)
386c036b
MK
1413 {
1414 ULONGEST sp;
1415
1416 regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp);
1417 sparc_supply_rwindow (regcache, sp, regnum);
1418 }
1419 else
1420 {
b4fd25c9 1421 int offset = gregmap->r_l0_offset;
386c036b
MK
1422
1423 if (sparc32)
1424 offset += 4;
1425
1426 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1427 {
386c036b
MK
1428 if (regnum == i || regnum == -1)
1429 regcache_raw_supply (regcache, i, regs + offset);
1430 offset += 8;
3567a8ea 1431 }
8b39fe56
MK
1432 }
1433 }
1434}
1435
1436void
b4fd25c9 1437sparc64_collect_gregset (const struct sparc_gregmap *gregmap,
386c036b
MK
1438 const struct regcache *regcache,
1439 int regnum, void *gregs)
8b39fe56 1440{
e17a4113
UW
1441 struct gdbarch *gdbarch = get_regcache_arch (regcache);
1442 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
1443 int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32);
19ba03f4 1444 gdb_byte *regs = (gdb_byte *) gregs;
3567a8ea
MK
1445 int i;
1446
386c036b 1447 if (sparc32)
8b39fe56 1448 {
386c036b
MK
1449 if (regnum == SPARC32_PSR_REGNUM || regnum == -1)
1450 {
b4fd25c9 1451 int offset = gregmap->r_tstate_offset;
386c036b 1452 ULONGEST tstate, psr;
e1613aba 1453 gdb_byte buf[8];
386c036b 1454
e17a4113 1455 tstate = extract_unsigned_integer (regs + offset, 8, byte_order);
386c036b 1456 regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf);
e17a4113 1457 psr = extract_unsigned_integer (buf, 4, byte_order);
386c036b
MK
1458 tstate |= (psr & PSR_ICC) << 12;
1459 if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS)
1460 tstate |= (psr & PSR_XCC) << 20;
e17a4113 1461 store_unsigned_integer (buf, 8, byte_order, tstate);
386c036b
MK
1462 memcpy (regs + offset, buf, 8);
1463 }
8b39fe56 1464
386c036b
MK
1465 if (regnum == SPARC32_PC_REGNUM || regnum == -1)
1466 regcache_raw_collect (regcache, SPARC32_PC_REGNUM,
b4fd25c9 1467 regs + gregmap->r_pc_offset + 4);
386c036b
MK
1468
1469 if (regnum == SPARC32_NPC_REGNUM || regnum == -1)
1470 regcache_raw_collect (regcache, SPARC32_NPC_REGNUM,
b4fd25c9 1471 regs + gregmap->r_npc_offset + 4);
386c036b
MK
1472
1473 if (regnum == SPARC32_Y_REGNUM || regnum == -1)
8b39fe56 1474 {
b4fd25c9 1475 int offset = gregmap->r_y_offset + 8 - gregmap->r_y_size;
386c036b 1476 regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset);
8b39fe56
MK
1477 }
1478 }
1479 else
1480 {
386c036b
MK
1481 if (regnum == SPARC64_STATE_REGNUM || regnum == -1)
1482 regcache_raw_collect (regcache, SPARC64_STATE_REGNUM,
b4fd25c9 1483 regs + gregmap->r_tstate_offset);
386c036b
MK
1484
1485 if (regnum == SPARC64_PC_REGNUM || regnum == -1)
1486 regcache_raw_collect (regcache, SPARC64_PC_REGNUM,
b4fd25c9 1487 regs + gregmap->r_pc_offset);
3567a8ea 1488
386c036b
MK
1489 if (regnum == SPARC64_NPC_REGNUM || regnum == -1)
1490 regcache_raw_collect (regcache, SPARC64_NPC_REGNUM,
b4fd25c9 1491 regs + gregmap->r_npc_offset);
3567a8ea 1492
386c036b 1493 if (regnum == SPARC64_Y_REGNUM || regnum == -1)
3567a8ea 1494 {
e1613aba 1495 gdb_byte buf[8];
386c036b
MK
1496
1497 regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf);
b4fd25c9
AA
1498 memcpy (regs + gregmap->r_y_offset,
1499 buf + 8 - gregmap->r_y_size, gregmap->r_y_size);
386c036b
MK
1500 }
1501
1502 if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1)
b4fd25c9 1503 && gregmap->r_fprs_offset != -1)
386c036b 1504 regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM,
b4fd25c9 1505 regs + gregmap->r_fprs_offset);
386c036b
MK
1506
1507 }
1508
1509 if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1)
1510 {
b4fd25c9 1511 int offset = gregmap->r_g1_offset;
386c036b
MK
1512
1513 if (sparc32)
1514 offset += 4;
1515
1516 /* %g0 is always zero. */
1517 for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++)
1518 {
1519 if (regnum == i || regnum == -1)
1520 regcache_raw_collect (regcache, i, regs + offset);
1521 offset += 8;
1522 }
1523 }
1524
1525 if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1)
1526 {
1527 /* Not all of the register set variants include Locals and
1528 Inputs. For those that don't, we read them off the stack. */
b4fd25c9 1529 if (gregmap->r_l0_offset != -1)
386c036b 1530 {
b4fd25c9 1531 int offset = gregmap->r_l0_offset;
386c036b
MK
1532
1533 if (sparc32)
1534 offset += 4;
1535
1536 for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++)
3567a8ea 1537 {
386c036b
MK
1538 if (regnum == i || regnum == -1)
1539 regcache_raw_collect (regcache, i, regs + offset);
1540 offset += 8;
3567a8ea
MK
1541 }
1542 }
8b39fe56
MK
1543 }
1544}
8b39fe56 1545
386c036b 1546void
b4fd25c9 1547sparc64_supply_fpregset (const struct sparc_fpregmap *fpregmap,
db75c717 1548 struct regcache *regcache,
386c036b
MK
1549 int regnum, const void *fpregs)
1550{
e6d4f032 1551 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
19ba03f4 1552 const gdb_byte *regs = (const gdb_byte *) fpregs;
386c036b
MK
1553 int i;
1554
1555 for (i = 0; i < 32; i++)
1556 {
1557 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
db75c717 1558 regcache_raw_supply (regcache, SPARC_F0_REGNUM + i,
b4fd25c9 1559 regs + fpregmap->r_f0_offset + (i * 4));
386c036b
MK
1560 }
1561
1562 if (sparc32)
1563 {
1564 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1565 regcache_raw_supply (regcache, SPARC32_FSR_REGNUM,
b4fd25c9 1566 regs + fpregmap->r_fsr_offset);
386c036b
MK
1567 }
1568 else
1569 {
1570 for (i = 0; i < 16; i++)
1571 {
1572 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1573 regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i,
b4fd25c9 1574 (regs + fpregmap->r_f0_offset
db75c717 1575 + (32 * 4) + (i * 8)));
386c036b
MK
1576 }
1577
1578 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1579 regcache_raw_supply (regcache, SPARC64_FSR_REGNUM,
b4fd25c9 1580 regs + fpregmap->r_fsr_offset);
386c036b
MK
1581 }
1582}
8b39fe56
MK
1583
1584void
b4fd25c9 1585sparc64_collect_fpregset (const struct sparc_fpregmap *fpregmap,
db75c717 1586 const struct regcache *regcache,
386c036b 1587 int regnum, void *fpregs)
8b39fe56 1588{
e6d4f032 1589 int sparc32 = (gdbarch_ptr_bit (get_regcache_arch (regcache)) == 32);
19ba03f4 1590 gdb_byte *regs = (gdb_byte *) fpregs;
386c036b
MK
1591 int i;
1592
1593 for (i = 0; i < 32; i++)
1594 {
1595 if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1)
db75c717 1596 regcache_raw_collect (regcache, SPARC_F0_REGNUM + i,
b4fd25c9 1597 regs + fpregmap->r_f0_offset + (i * 4));
386c036b
MK
1598 }
1599
1600 if (sparc32)
1601 {
1602 if (regnum == SPARC32_FSR_REGNUM || regnum == -1)
1603 regcache_raw_collect (regcache, SPARC32_FSR_REGNUM,
b4fd25c9 1604 regs + fpregmap->r_fsr_offset);
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1605 }
1606 else
1607 {
1608 for (i = 0; i < 16; i++)
1609 {
1610 if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1)
1611 regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i,
b4fd25c9 1612 (regs + fpregmap->r_f0_offset
db75c717 1613 + (32 * 4) + (i * 8)));
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1614 }
1615
1616 if (regnum == SPARC64_FSR_REGNUM || regnum == -1)
1617 regcache_raw_collect (regcache, SPARC64_FSR_REGNUM,
b4fd25c9 1618 regs + fpregmap->r_fsr_offset);
386c036b 1619 }
8b39fe56 1620}
fd936806 1621
b4fd25c9 1622const struct sparc_fpregmap sparc64_bsd_fpregmap =
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1623{
1624 0 * 8, /* %f0 */
1625 32 * 8, /* %fsr */
1626};
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