| 1 | /* Target-dependent code for UltraSPARC. |
| 2 | |
| 3 | Copyright (C) 2003-2020 Free Software Foundation, Inc. |
| 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 |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 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 |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "defs.h" |
| 21 | #include "arch-utils.h" |
| 22 | #include "dwarf2/frame.h" |
| 23 | #include "frame.h" |
| 24 | #include "frame-base.h" |
| 25 | #include "frame-unwind.h" |
| 26 | #include "gdbcore.h" |
| 27 | #include "gdbtypes.h" |
| 28 | #include "inferior.h" |
| 29 | #include "symtab.h" |
| 30 | #include "objfiles.h" |
| 31 | #include "osabi.h" |
| 32 | #include "regcache.h" |
| 33 | #include "target-descriptions.h" |
| 34 | #include "target.h" |
| 35 | #include "value.h" |
| 36 | |
| 37 | #include "sparc64-tdep.h" |
| 38 | |
| 39 | /* This file implements the SPARC 64-bit ABI as defined by the |
| 40 | section "Low-Level System Information" of the SPARC Compliance |
| 41 | Definition (SCD) 2.4.1, which is the 64-bit System V psABI for |
| 42 | SPARC. */ |
| 43 | |
| 44 | /* Please use the sparc32_-prefix for 32-bit specific code, the |
| 45 | sparc64_-prefix for 64-bit specific code and the sparc_-prefix for |
| 46 | code can handle both. */ |
| 47 | \f |
| 48 | /* The M7 processor supports an Application Data Integrity (ADI) feature |
| 49 | that detects invalid data accesses. When software allocates memory and |
| 50 | enables ADI on the allocated memory, it chooses a 4-bit version number, |
| 51 | sets the version in the upper 4 bits of the 64-bit pointer to that data, |
| 52 | and stores the 4-bit version in every cacheline of the object. Hardware |
| 53 | saves the latter in spare bits in the cache and memory hierarchy. On each |
| 54 | load and store, the processor compares the upper 4 VA (virtual address) bits |
| 55 | to the cacheline's version. If there is a mismatch, the processor generates |
| 56 | a version mismatch trap which can be either precise or disrupting. |
| 57 | The trap is an error condition which the kernel delivers to the process |
| 58 | as a SIGSEGV signal. |
| 59 | |
| 60 | The upper 4 bits of the VA represent a version and are not part of the |
| 61 | true address. The processor clears these bits and sign extends bit 59 |
| 62 | to generate the true address. |
| 63 | |
| 64 | Note that 32-bit applications cannot use ADI. */ |
| 65 | |
| 66 | |
| 67 | #include <algorithm> |
| 68 | #include "cli/cli-utils.h" |
| 69 | #include "gdbcmd.h" |
| 70 | #include "auxv.h" |
| 71 | |
| 72 | #define MAX_PROC_NAME_SIZE sizeof("/proc/99999/lwp/9999/adi/lstatus") |
| 73 | |
| 74 | /* ELF Auxiliary vectors */ |
| 75 | #ifndef AT_ADI_BLKSZ |
| 76 | #define AT_ADI_BLKSZ 34 |
| 77 | #endif |
| 78 | #ifndef AT_ADI_NBITS |
| 79 | #define AT_ADI_NBITS 35 |
| 80 | #endif |
| 81 | #ifndef AT_ADI_UEONADI |
| 82 | #define AT_ADI_UEONADI 36 |
| 83 | #endif |
| 84 | |
| 85 | /* ADI command list. */ |
| 86 | static struct cmd_list_element *sparc64adilist = NULL; |
| 87 | |
| 88 | /* ADI stat settings. */ |
| 89 | struct adi_stat_t |
| 90 | { |
| 91 | /* The ADI block size. */ |
| 92 | unsigned long blksize; |
| 93 | |
| 94 | /* Number of bits used for an ADI version tag which can be |
| 95 | used together with the shift value for an ADI version tag |
| 96 | to encode or extract the ADI version value in a pointer. */ |
| 97 | unsigned long nbits; |
| 98 | |
| 99 | /* The maximum ADI version tag value supported. */ |
| 100 | int max_version; |
| 101 | |
| 102 | /* ADI version tag file. */ |
| 103 | int tag_fd = 0; |
| 104 | |
| 105 | /* ADI availability check has been done. */ |
| 106 | bool checked_avail = false; |
| 107 | |
| 108 | /* ADI is available. */ |
| 109 | bool is_avail = false; |
| 110 | |
| 111 | }; |
| 112 | |
| 113 | /* Per-process ADI stat info. */ |
| 114 | |
| 115 | struct sparc64_adi_info |
| 116 | { |
| 117 | sparc64_adi_info (pid_t pid_) |
| 118 | : pid (pid_) |
| 119 | {} |
| 120 | |
| 121 | /* The process identifier. */ |
| 122 | pid_t pid; |
| 123 | |
| 124 | /* The ADI stat. */ |
| 125 | adi_stat_t stat = {}; |
| 126 | |
| 127 | }; |
| 128 | |
| 129 | static std::forward_list<sparc64_adi_info> adi_proc_list; |
| 130 | |
| 131 | |
| 132 | /* Get ADI info for process PID, creating one if it doesn't exist. */ |
| 133 | |
| 134 | static sparc64_adi_info * |
| 135 | get_adi_info_proc (pid_t pid) |
| 136 | { |
| 137 | auto found = std::find_if (adi_proc_list.begin (), adi_proc_list.end (), |
| 138 | [&pid] (const sparc64_adi_info &info) |
| 139 | { |
| 140 | return info.pid == pid; |
| 141 | }); |
| 142 | |
| 143 | if (found == adi_proc_list.end ()) |
| 144 | { |
| 145 | adi_proc_list.emplace_front (pid); |
| 146 | return &adi_proc_list.front (); |
| 147 | } |
| 148 | else |
| 149 | { |
| 150 | return &(*found); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | static adi_stat_t |
| 155 | get_adi_info (pid_t pid) |
| 156 | { |
| 157 | sparc64_adi_info *proc; |
| 158 | |
| 159 | proc = get_adi_info_proc (pid); |
| 160 | return proc->stat; |
| 161 | } |
| 162 | |
| 163 | /* Is called when GDB is no longer debugging process PID. It |
| 164 | deletes data structure that keeps track of the ADI stat. */ |
| 165 | |
| 166 | void |
| 167 | sparc64_forget_process (pid_t pid) |
| 168 | { |
| 169 | int target_errno; |
| 170 | |
| 171 | for (auto pit = adi_proc_list.before_begin (), |
| 172 | it = std::next (pit); |
| 173 | it != adi_proc_list.end (); |
| 174 | ) |
| 175 | { |
| 176 | if ((*it).pid == pid) |
| 177 | { |
| 178 | if ((*it).stat.tag_fd > 0) |
| 179 | target_fileio_close ((*it).stat.tag_fd, &target_errno); |
| 180 | adi_proc_list.erase_after (pit); |
| 181 | break; |
| 182 | } |
| 183 | else |
| 184 | pit = it++; |
| 185 | } |
| 186 | |
| 187 | } |
| 188 | |
| 189 | /* Read attributes of a maps entry in /proc/[pid]/adi/maps. */ |
| 190 | |
| 191 | static void |
| 192 | read_maps_entry (const char *line, |
| 193 | ULONGEST *addr, ULONGEST *endaddr) |
| 194 | { |
| 195 | const char *p = line; |
| 196 | |
| 197 | *addr = strtoulst (p, &p, 16); |
| 198 | if (*p == '-') |
| 199 | p++; |
| 200 | |
| 201 | *endaddr = strtoulst (p, &p, 16); |
| 202 | } |
| 203 | |
| 204 | /* Check if ADI is available. */ |
| 205 | |
| 206 | static bool |
| 207 | adi_available (void) |
| 208 | { |
| 209 | pid_t pid = inferior_ptid.pid (); |
| 210 | sparc64_adi_info *proc = get_adi_info_proc (pid); |
| 211 | CORE_ADDR value; |
| 212 | |
| 213 | if (proc->stat.checked_avail) |
| 214 | return proc->stat.is_avail; |
| 215 | |
| 216 | proc->stat.checked_avail = true; |
| 217 | if (target_auxv_search (current_top_target (), AT_ADI_BLKSZ, &value) <= 0) |
| 218 | return false; |
| 219 | proc->stat.blksize = value; |
| 220 | target_auxv_search (current_top_target (), AT_ADI_NBITS, &value); |
| 221 | proc->stat.nbits = value; |
| 222 | proc->stat.max_version = (1 << proc->stat.nbits) - 2; |
| 223 | proc->stat.is_avail = true; |
| 224 | |
| 225 | return proc->stat.is_avail; |
| 226 | } |
| 227 | |
| 228 | /* Normalize a versioned address - a VA with ADI bits (63-60) set. */ |
| 229 | |
| 230 | static CORE_ADDR |
| 231 | adi_normalize_address (CORE_ADDR addr) |
| 232 | { |
| 233 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 234 | |
| 235 | if (ast.nbits) |
| 236 | { |
| 237 | /* Clear upper bits. */ |
| 238 | addr &= ((uint64_t) -1) >> ast.nbits; |
| 239 | |
| 240 | /* Sign extend. */ |
| 241 | CORE_ADDR signbit = (uint64_t) 1 << (64 - ast.nbits - 1); |
| 242 | return (addr ^ signbit) - signbit; |
| 243 | } |
| 244 | return addr; |
| 245 | } |
| 246 | |
| 247 | /* Align a normalized address - a VA with bit 59 sign extended into |
| 248 | ADI bits. */ |
| 249 | |
| 250 | static CORE_ADDR |
| 251 | adi_align_address (CORE_ADDR naddr) |
| 252 | { |
| 253 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 254 | |
| 255 | return (naddr - (naddr % ast.blksize)) / ast.blksize; |
| 256 | } |
| 257 | |
| 258 | /* Convert a byte count to count at a ratio of 1:adi_blksz. */ |
| 259 | |
| 260 | static int |
| 261 | adi_convert_byte_count (CORE_ADDR naddr, int nbytes, CORE_ADDR locl) |
| 262 | { |
| 263 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 264 | |
| 265 | return ((naddr + nbytes + ast.blksize - 1) / ast.blksize) - locl; |
| 266 | } |
| 267 | |
| 268 | /* The /proc/[pid]/adi/tags file, which allows gdb to get/set ADI |
| 269 | version in a target process, maps linearly to the address space |
| 270 | of the target process at a ratio of 1:adi_blksz. |
| 271 | |
| 272 | A read (or write) at offset K in the file returns (or modifies) |
| 273 | the ADI version tag stored in the cacheline containing address |
| 274 | K * adi_blksz, encoded as 1 version tag per byte. The allowed |
| 275 | version tag values are between 0 and adi_stat.max_version. */ |
| 276 | |
| 277 | static int |
| 278 | adi_tag_fd (void) |
| 279 | { |
| 280 | pid_t pid = inferior_ptid.pid (); |
| 281 | sparc64_adi_info *proc = get_adi_info_proc (pid); |
| 282 | |
| 283 | if (proc->stat.tag_fd != 0) |
| 284 | return proc->stat.tag_fd; |
| 285 | |
| 286 | char cl_name[MAX_PROC_NAME_SIZE]; |
| 287 | snprintf (cl_name, sizeof(cl_name), "/proc/%ld/adi/tags", (long) pid); |
| 288 | int target_errno; |
| 289 | proc->stat.tag_fd = target_fileio_open (NULL, cl_name, O_RDWR|O_EXCL, |
| 290 | false, 0, &target_errno); |
| 291 | return proc->stat.tag_fd; |
| 292 | } |
| 293 | |
| 294 | /* Check if an address set is ADI enabled, using /proc/[pid]/adi/maps |
| 295 | which was exported by the kernel and contains the currently ADI |
| 296 | mapped memory regions and their access permissions. */ |
| 297 | |
| 298 | static bool |
| 299 | adi_is_addr_mapped (CORE_ADDR vaddr, size_t cnt) |
| 300 | { |
| 301 | char filename[MAX_PROC_NAME_SIZE]; |
| 302 | size_t i = 0; |
| 303 | |
| 304 | pid_t pid = inferior_ptid.pid (); |
| 305 | snprintf (filename, sizeof filename, "/proc/%ld/adi/maps", (long) pid); |
| 306 | gdb::unique_xmalloc_ptr<char> data |
| 307 | = target_fileio_read_stralloc (NULL, filename); |
| 308 | if (data) |
| 309 | { |
| 310 | adi_stat_t adi_stat = get_adi_info (pid); |
| 311 | char *saveptr; |
| 312 | for (char *line = strtok_r (data.get (), "\n", &saveptr); |
| 313 | line; |
| 314 | line = strtok_r (NULL, "\n", &saveptr)) |
| 315 | { |
| 316 | ULONGEST addr, endaddr; |
| 317 | |
| 318 | read_maps_entry (line, &addr, &endaddr); |
| 319 | |
| 320 | while (((vaddr + i) * adi_stat.blksize) >= addr |
| 321 | && ((vaddr + i) * adi_stat.blksize) < endaddr) |
| 322 | { |
| 323 | if (++i == cnt) |
| 324 | return true; |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | else |
| 329 | warning (_("unable to open /proc file '%s'"), filename); |
| 330 | |
| 331 | return false; |
| 332 | } |
| 333 | |
| 334 | /* Read ADI version tag value for memory locations starting at "VADDR" |
| 335 | for "SIZE" number of bytes. */ |
| 336 | |
| 337 | static int |
| 338 | adi_read_versions (CORE_ADDR vaddr, size_t size, gdb_byte *tags) |
| 339 | { |
| 340 | int fd = adi_tag_fd (); |
| 341 | if (fd == -1) |
| 342 | return -1; |
| 343 | |
| 344 | if (!adi_is_addr_mapped (vaddr, size)) |
| 345 | { |
| 346 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 347 | error(_("Address at %s is not in ADI maps"), |
| 348 | paddress (target_gdbarch (), vaddr * ast.blksize)); |
| 349 | } |
| 350 | |
| 351 | int target_errno; |
| 352 | return target_fileio_pread (fd, tags, size, vaddr, &target_errno); |
| 353 | } |
| 354 | |
| 355 | /* Write ADI version tag for memory locations starting at "VADDR" for |
| 356 | "SIZE" number of bytes to "TAGS". */ |
| 357 | |
| 358 | static int |
| 359 | adi_write_versions (CORE_ADDR vaddr, size_t size, unsigned char *tags) |
| 360 | { |
| 361 | int fd = adi_tag_fd (); |
| 362 | if (fd == -1) |
| 363 | return -1; |
| 364 | |
| 365 | if (!adi_is_addr_mapped (vaddr, size)) |
| 366 | { |
| 367 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 368 | error(_("Address at %s is not in ADI maps"), |
| 369 | paddress (target_gdbarch (), vaddr * ast.blksize)); |
| 370 | } |
| 371 | |
| 372 | int target_errno; |
| 373 | return target_fileio_pwrite (fd, tags, size, vaddr, &target_errno); |
| 374 | } |
| 375 | |
| 376 | /* Print ADI version tag value in "TAGS" for memory locations starting |
| 377 | at "VADDR" with number of "CNT". */ |
| 378 | |
| 379 | static void |
| 380 | adi_print_versions (CORE_ADDR vaddr, size_t cnt, gdb_byte *tags) |
| 381 | { |
| 382 | int v_idx = 0; |
| 383 | const int maxelts = 8; /* # of elements per line */ |
| 384 | |
| 385 | adi_stat_t adi_stat = get_adi_info (inferior_ptid.pid ()); |
| 386 | |
| 387 | while (cnt > 0) |
| 388 | { |
| 389 | QUIT; |
| 390 | printf_filtered ("%s:\t", |
| 391 | paddress (target_gdbarch (), vaddr * adi_stat.blksize)); |
| 392 | for (int i = maxelts; i > 0 && cnt > 0; i--, cnt--) |
| 393 | { |
| 394 | if (tags[v_idx] == 0xff) /* no version tag */ |
| 395 | printf_filtered ("-"); |
| 396 | else |
| 397 | printf_filtered ("%1X", tags[v_idx]); |
| 398 | if (cnt > 1) |
| 399 | printf_filtered (" "); |
| 400 | ++v_idx; |
| 401 | } |
| 402 | printf_filtered ("\n"); |
| 403 | vaddr += maxelts; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | static void |
| 408 | do_examine (CORE_ADDR start, int bcnt) |
| 409 | { |
| 410 | CORE_ADDR vaddr = adi_normalize_address (start); |
| 411 | |
| 412 | CORE_ADDR vstart = adi_align_address (vaddr); |
| 413 | int cnt = adi_convert_byte_count (vaddr, bcnt, vstart); |
| 414 | gdb::def_vector<gdb_byte> buf (cnt); |
| 415 | int read_cnt = adi_read_versions (vstart, cnt, buf.data ()); |
| 416 | if (read_cnt == -1) |
| 417 | error (_("No ADI information")); |
| 418 | else if (read_cnt < cnt) |
| 419 | error(_("No ADI information at %s"), paddress (target_gdbarch (), vaddr)); |
| 420 | |
| 421 | adi_print_versions (vstart, cnt, buf.data ()); |
| 422 | } |
| 423 | |
| 424 | static void |
| 425 | do_assign (CORE_ADDR start, size_t bcnt, int version) |
| 426 | { |
| 427 | CORE_ADDR vaddr = adi_normalize_address (start); |
| 428 | |
| 429 | CORE_ADDR vstart = adi_align_address (vaddr); |
| 430 | int cnt = adi_convert_byte_count (vaddr, bcnt, vstart); |
| 431 | std::vector<unsigned char> buf (cnt, version); |
| 432 | int set_cnt = adi_write_versions (vstart, cnt, buf.data ()); |
| 433 | |
| 434 | if (set_cnt == -1) |
| 435 | error (_("No ADI information")); |
| 436 | else if (set_cnt < cnt) |
| 437 | error(_("No ADI information at %s"), paddress (target_gdbarch (), vaddr)); |
| 438 | |
| 439 | } |
| 440 | |
| 441 | /* ADI examine version tag command. |
| 442 | |
| 443 | Command syntax: |
| 444 | |
| 445 | adi (examine|x)[/COUNT] [ADDR] */ |
| 446 | |
| 447 | static void |
| 448 | adi_examine_command (const char *args, int from_tty) |
| 449 | { |
| 450 | /* make sure program is active and adi is available */ |
| 451 | if (!target_has_execution) |
| 452 | error (_("ADI command requires a live process/thread")); |
| 453 | |
| 454 | if (!adi_available ()) |
| 455 | error (_("No ADI information")); |
| 456 | |
| 457 | int cnt = 1; |
| 458 | const char *p = args; |
| 459 | if (p && *p == '/') |
| 460 | { |
| 461 | p++; |
| 462 | cnt = get_number (&p); |
| 463 | } |
| 464 | |
| 465 | CORE_ADDR next_address = 0; |
| 466 | if (p != 0 && *p != 0) |
| 467 | next_address = parse_and_eval_address (p); |
| 468 | if (!cnt || !next_address) |
| 469 | error (_("Usage: adi examine|x[/COUNT] [ADDR]")); |
| 470 | |
| 471 | do_examine (next_address, cnt); |
| 472 | } |
| 473 | |
| 474 | /* ADI assign version tag command. |
| 475 | |
| 476 | Command syntax: |
| 477 | |
| 478 | adi (assign|a)[/COUNT] ADDR = VERSION */ |
| 479 | |
| 480 | static void |
| 481 | adi_assign_command (const char *args, int from_tty) |
| 482 | { |
| 483 | static const char *adi_usage |
| 484 | = N_("Usage: adi assign|a[/COUNT] ADDR = VERSION"); |
| 485 | |
| 486 | /* make sure program is active and adi is available */ |
| 487 | if (!target_has_execution) |
| 488 | error (_("ADI command requires a live process/thread")); |
| 489 | |
| 490 | if (!adi_available ()) |
| 491 | error (_("No ADI information")); |
| 492 | |
| 493 | const char *exp = args; |
| 494 | if (exp == 0) |
| 495 | error_no_arg (_(adi_usage)); |
| 496 | |
| 497 | char *q = (char *) strchr (exp, '='); |
| 498 | if (q) |
| 499 | *q++ = 0; |
| 500 | else |
| 501 | error ("%s", _(adi_usage)); |
| 502 | |
| 503 | size_t cnt = 1; |
| 504 | const char *p = args; |
| 505 | if (exp && *exp == '/') |
| 506 | { |
| 507 | p = exp + 1; |
| 508 | cnt = get_number (&p); |
| 509 | } |
| 510 | |
| 511 | CORE_ADDR next_address = 0; |
| 512 | if (p != 0 && *p != 0) |
| 513 | next_address = parse_and_eval_address (p); |
| 514 | else |
| 515 | error ("%s", _(adi_usage)); |
| 516 | |
| 517 | int version = 0; |
| 518 | if (q != NULL) /* parse version tag */ |
| 519 | { |
| 520 | adi_stat_t ast = get_adi_info (inferior_ptid.pid ()); |
| 521 | version = parse_and_eval_long (q); |
| 522 | if (version < 0 || version > ast.max_version) |
| 523 | error (_("Invalid ADI version tag %d"), version); |
| 524 | } |
| 525 | |
| 526 | do_assign (next_address, cnt, version); |
| 527 | } |
| 528 | |
| 529 | void _initialize_sparc64_adi_tdep (); |
| 530 | void |
| 531 | _initialize_sparc64_adi_tdep () |
| 532 | { |
| 533 | add_basic_prefix_cmd ("adi", class_support, |
| 534 | _("ADI version related commands."), |
| 535 | &sparc64adilist, "adi ", 0, &cmdlist); |
| 536 | add_cmd ("examine", class_support, adi_examine_command, |
| 537 | _("Examine ADI versions."), &sparc64adilist); |
| 538 | add_alias_cmd ("x", "examine", no_class, 1, &sparc64adilist); |
| 539 | add_cmd ("assign", class_support, adi_assign_command, |
| 540 | _("Assign ADI versions."), &sparc64adilist); |
| 541 | |
| 542 | } |
| 543 | \f |
| 544 | |
| 545 | /* The functions on this page are intended to be used to classify |
| 546 | function arguments. */ |
| 547 | |
| 548 | /* Check whether TYPE is "Integral or Pointer". */ |
| 549 | |
| 550 | static int |
| 551 | sparc64_integral_or_pointer_p (const struct type *type) |
| 552 | { |
| 553 | switch (type->code ()) |
| 554 | { |
| 555 | case TYPE_CODE_INT: |
| 556 | case TYPE_CODE_BOOL: |
| 557 | case TYPE_CODE_CHAR: |
| 558 | case TYPE_CODE_ENUM: |
| 559 | case TYPE_CODE_RANGE: |
| 560 | { |
| 561 | int len = TYPE_LENGTH (type); |
| 562 | gdb_assert (len == 1 || len == 2 || len == 4 || len == 8); |
| 563 | } |
| 564 | return 1; |
| 565 | case TYPE_CODE_PTR: |
| 566 | case TYPE_CODE_REF: |
| 567 | case TYPE_CODE_RVALUE_REF: |
| 568 | { |
| 569 | int len = TYPE_LENGTH (type); |
| 570 | gdb_assert (len == 8); |
| 571 | } |
| 572 | return 1; |
| 573 | default: |
| 574 | break; |
| 575 | } |
| 576 | |
| 577 | return 0; |
| 578 | } |
| 579 | |
| 580 | /* Check whether TYPE is "Floating". */ |
| 581 | |
| 582 | static int |
| 583 | sparc64_floating_p (const struct type *type) |
| 584 | { |
| 585 | switch (type->code ()) |
| 586 | { |
| 587 | case TYPE_CODE_FLT: |
| 588 | { |
| 589 | int len = TYPE_LENGTH (type); |
| 590 | gdb_assert (len == 4 || len == 8 || len == 16); |
| 591 | } |
| 592 | return 1; |
| 593 | default: |
| 594 | break; |
| 595 | } |
| 596 | |
| 597 | return 0; |
| 598 | } |
| 599 | |
| 600 | /* Check whether TYPE is "Complex Floating". */ |
| 601 | |
| 602 | static int |
| 603 | sparc64_complex_floating_p (const struct type *type) |
| 604 | { |
| 605 | switch (type->code ()) |
| 606 | { |
| 607 | case TYPE_CODE_COMPLEX: |
| 608 | { |
| 609 | int len = TYPE_LENGTH (type); |
| 610 | gdb_assert (len == 8 || len == 16 || len == 32); |
| 611 | } |
| 612 | return 1; |
| 613 | default: |
| 614 | break; |
| 615 | } |
| 616 | |
| 617 | return 0; |
| 618 | } |
| 619 | |
| 620 | /* Check whether TYPE is "Structure or Union". |
| 621 | |
| 622 | In terms of Ada subprogram calls, arrays are treated the same as |
| 623 | struct and union types. So this function also returns non-zero |
| 624 | for array types. */ |
| 625 | |
| 626 | static int |
| 627 | sparc64_structure_or_union_p (const struct type *type) |
| 628 | { |
| 629 | switch (type->code ()) |
| 630 | { |
| 631 | case TYPE_CODE_STRUCT: |
| 632 | case TYPE_CODE_UNION: |
| 633 | case TYPE_CODE_ARRAY: |
| 634 | return 1; |
| 635 | default: |
| 636 | break; |
| 637 | } |
| 638 | |
| 639 | return 0; |
| 640 | } |
| 641 | \f |
| 642 | |
| 643 | /* Construct types for ISA-specific registers. */ |
| 644 | |
| 645 | static struct type * |
| 646 | sparc64_pstate_type (struct gdbarch *gdbarch) |
| 647 | { |
| 648 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 649 | |
| 650 | if (!tdep->sparc64_pstate_type) |
| 651 | { |
| 652 | struct type *type; |
| 653 | |
| 654 | type = arch_flags_type (gdbarch, "builtin_type_sparc64_pstate", 64); |
| 655 | append_flags_type_flag (type, 0, "AG"); |
| 656 | append_flags_type_flag (type, 1, "IE"); |
| 657 | append_flags_type_flag (type, 2, "PRIV"); |
| 658 | append_flags_type_flag (type, 3, "AM"); |
| 659 | append_flags_type_flag (type, 4, "PEF"); |
| 660 | append_flags_type_flag (type, 5, "RED"); |
| 661 | append_flags_type_flag (type, 8, "TLE"); |
| 662 | append_flags_type_flag (type, 9, "CLE"); |
| 663 | append_flags_type_flag (type, 10, "PID0"); |
| 664 | append_flags_type_flag (type, 11, "PID1"); |
| 665 | |
| 666 | tdep->sparc64_pstate_type = type; |
| 667 | } |
| 668 | |
| 669 | return tdep->sparc64_pstate_type; |
| 670 | } |
| 671 | |
| 672 | static struct type * |
| 673 | sparc64_ccr_type (struct gdbarch *gdbarch) |
| 674 | { |
| 675 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 676 | |
| 677 | if (tdep->sparc64_ccr_type == NULL) |
| 678 | { |
| 679 | struct type *type; |
| 680 | |
| 681 | type = arch_flags_type (gdbarch, "builtin_type_sparc64_ccr", 64); |
| 682 | append_flags_type_flag (type, 0, "icc.c"); |
| 683 | append_flags_type_flag (type, 1, "icc.v"); |
| 684 | append_flags_type_flag (type, 2, "icc.z"); |
| 685 | append_flags_type_flag (type, 3, "icc.n"); |
| 686 | append_flags_type_flag (type, 4, "xcc.c"); |
| 687 | append_flags_type_flag (type, 5, "xcc.v"); |
| 688 | append_flags_type_flag (type, 6, "xcc.z"); |
| 689 | append_flags_type_flag (type, 7, "xcc.n"); |
| 690 | |
| 691 | tdep->sparc64_ccr_type = type; |
| 692 | } |
| 693 | |
| 694 | return tdep->sparc64_ccr_type; |
| 695 | } |
| 696 | |
| 697 | static struct type * |
| 698 | sparc64_fsr_type (struct gdbarch *gdbarch) |
| 699 | { |
| 700 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 701 | |
| 702 | if (!tdep->sparc64_fsr_type) |
| 703 | { |
| 704 | struct type *type; |
| 705 | |
| 706 | type = arch_flags_type (gdbarch, "builtin_type_sparc64_fsr", 64); |
| 707 | append_flags_type_flag (type, 0, "NXC"); |
| 708 | append_flags_type_flag (type, 1, "DZC"); |
| 709 | append_flags_type_flag (type, 2, "UFC"); |
| 710 | append_flags_type_flag (type, 3, "OFC"); |
| 711 | append_flags_type_flag (type, 4, "NVC"); |
| 712 | append_flags_type_flag (type, 5, "NXA"); |
| 713 | append_flags_type_flag (type, 6, "DZA"); |
| 714 | append_flags_type_flag (type, 7, "UFA"); |
| 715 | append_flags_type_flag (type, 8, "OFA"); |
| 716 | append_flags_type_flag (type, 9, "NVA"); |
| 717 | append_flags_type_flag (type, 22, "NS"); |
| 718 | append_flags_type_flag (type, 23, "NXM"); |
| 719 | append_flags_type_flag (type, 24, "DZM"); |
| 720 | append_flags_type_flag (type, 25, "UFM"); |
| 721 | append_flags_type_flag (type, 26, "OFM"); |
| 722 | append_flags_type_flag (type, 27, "NVM"); |
| 723 | |
| 724 | tdep->sparc64_fsr_type = type; |
| 725 | } |
| 726 | |
| 727 | return tdep->sparc64_fsr_type; |
| 728 | } |
| 729 | |
| 730 | static struct type * |
| 731 | sparc64_fprs_type (struct gdbarch *gdbarch) |
| 732 | { |
| 733 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 734 | |
| 735 | if (!tdep->sparc64_fprs_type) |
| 736 | { |
| 737 | struct type *type; |
| 738 | |
| 739 | type = arch_flags_type (gdbarch, "builtin_type_sparc64_fprs", 64); |
| 740 | append_flags_type_flag (type, 0, "DL"); |
| 741 | append_flags_type_flag (type, 1, "DU"); |
| 742 | append_flags_type_flag (type, 2, "FEF"); |
| 743 | |
| 744 | tdep->sparc64_fprs_type = type; |
| 745 | } |
| 746 | |
| 747 | return tdep->sparc64_fprs_type; |
| 748 | } |
| 749 | |
| 750 | |
| 751 | /* Register information. */ |
| 752 | #define SPARC64_FPU_REGISTERS \ |
| 753 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \ |
| 754 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \ |
| 755 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \ |
| 756 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \ |
| 757 | "f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \ |
| 758 | "f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62" |
| 759 | #define SPARC64_CP0_REGISTERS \ |
| 760 | "pc", "npc", \ |
| 761 | /* FIXME: Give "state" a name until we start using register groups. */ \ |
| 762 | "state", \ |
| 763 | "fsr", \ |
| 764 | "fprs", \ |
| 765 | "y" |
| 766 | |
| 767 | static const char *sparc64_fpu_register_names[] = { SPARC64_FPU_REGISTERS }; |
| 768 | static const char *sparc64_cp0_register_names[] = { SPARC64_CP0_REGISTERS }; |
| 769 | |
| 770 | static const char *sparc64_register_names[] = |
| 771 | { |
| 772 | SPARC_CORE_REGISTERS, |
| 773 | SPARC64_FPU_REGISTERS, |
| 774 | SPARC64_CP0_REGISTERS |
| 775 | }; |
| 776 | |
| 777 | /* Total number of registers. */ |
| 778 | #define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_names) |
| 779 | |
| 780 | /* We provide the aliases %d0..%d62 and %q0..%q60 for the floating |
| 781 | registers as "psuedo" registers. */ |
| 782 | |
| 783 | static const char *sparc64_pseudo_register_names[] = |
| 784 | { |
| 785 | "cwp", "pstate", "asi", "ccr", |
| 786 | |
| 787 | "d0", "d2", "d4", "d6", "d8", "d10", "d12", "d14", |
| 788 | "d16", "d18", "d20", "d22", "d24", "d26", "d28", "d30", |
| 789 | "d32", "d34", "d36", "d38", "d40", "d42", "d44", "d46", |
| 790 | "d48", "d50", "d52", "d54", "d56", "d58", "d60", "d62", |
| 791 | |
| 792 | "q0", "q4", "q8", "q12", "q16", "q20", "q24", "q28", |
| 793 | "q32", "q36", "q40", "q44", "q48", "q52", "q56", "q60", |
| 794 | }; |
| 795 | |
| 796 | /* Total number of pseudo registers. */ |
| 797 | #define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_names) |
| 798 | |
| 799 | /* Return the name of pseudo register REGNUM. */ |
| 800 | |
| 801 | static const char * |
| 802 | sparc64_pseudo_register_name (struct gdbarch *gdbarch, int regnum) |
| 803 | { |
| 804 | regnum -= gdbarch_num_regs (gdbarch); |
| 805 | |
| 806 | if (regnum < SPARC64_NUM_PSEUDO_REGS) |
| 807 | return sparc64_pseudo_register_names[regnum]; |
| 808 | |
| 809 | internal_error (__FILE__, __LINE__, |
| 810 | _("sparc64_pseudo_register_name: bad register number %d"), |
| 811 | regnum); |
| 812 | } |
| 813 | |
| 814 | /* Return the name of register REGNUM. */ |
| 815 | |
| 816 | static const char * |
| 817 | sparc64_register_name (struct gdbarch *gdbarch, int regnum) |
| 818 | { |
| 819 | if (tdesc_has_registers (gdbarch_target_desc (gdbarch))) |
| 820 | return tdesc_register_name (gdbarch, regnum); |
| 821 | |
| 822 | if (regnum >= 0 && regnum < gdbarch_num_regs (gdbarch)) |
| 823 | return sparc64_register_names[regnum]; |
| 824 | |
| 825 | return sparc64_pseudo_register_name (gdbarch, regnum); |
| 826 | } |
| 827 | |
| 828 | /* Return the GDB type object for the "standard" data type of data in |
| 829 | pseudo register REGNUM. */ |
| 830 | |
| 831 | static struct type * |
| 832 | sparc64_pseudo_register_type (struct gdbarch *gdbarch, int regnum) |
| 833 | { |
| 834 | regnum -= gdbarch_num_regs (gdbarch); |
| 835 | |
| 836 | if (regnum == SPARC64_CWP_REGNUM) |
| 837 | return builtin_type (gdbarch)->builtin_int64; |
| 838 | if (regnum == SPARC64_PSTATE_REGNUM) |
| 839 | return sparc64_pstate_type (gdbarch); |
| 840 | if (regnum == SPARC64_ASI_REGNUM) |
| 841 | return builtin_type (gdbarch)->builtin_int64; |
| 842 | if (regnum == SPARC64_CCR_REGNUM) |
| 843 | return sparc64_ccr_type (gdbarch); |
| 844 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D62_REGNUM) |
| 845 | return builtin_type (gdbarch)->builtin_double; |
| 846 | if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q60_REGNUM) |
| 847 | return builtin_type (gdbarch)->builtin_long_double; |
| 848 | |
| 849 | internal_error (__FILE__, __LINE__, |
| 850 | _("sparc64_pseudo_register_type: bad register number %d"), |
| 851 | regnum); |
| 852 | } |
| 853 | |
| 854 | /* Return the GDB type object for the "standard" data type of data in |
| 855 | register REGNUM. */ |
| 856 | |
| 857 | static struct type * |
| 858 | sparc64_register_type (struct gdbarch *gdbarch, int regnum) |
| 859 | { |
| 860 | if (tdesc_has_registers (gdbarch_target_desc (gdbarch))) |
| 861 | return tdesc_register_type (gdbarch, regnum); |
| 862 | |
| 863 | /* Raw registers. */ |
| 864 | if (regnum == SPARC_SP_REGNUM || regnum == SPARC_FP_REGNUM) |
| 865 | return builtin_type (gdbarch)->builtin_data_ptr; |
| 866 | if (regnum >= SPARC_G0_REGNUM && regnum <= SPARC_I7_REGNUM) |
| 867 | return builtin_type (gdbarch)->builtin_int64; |
| 868 | if (regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM) |
| 869 | return builtin_type (gdbarch)->builtin_float; |
| 870 | if (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM) |
| 871 | return builtin_type (gdbarch)->builtin_double; |
| 872 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) |
| 873 | return builtin_type (gdbarch)->builtin_func_ptr; |
| 874 | /* This raw register contains the contents of %cwp, %pstate, %asi |
| 875 | and %ccr as laid out in a %tstate register. */ |
| 876 | if (regnum == SPARC64_STATE_REGNUM) |
| 877 | return builtin_type (gdbarch)->builtin_int64; |
| 878 | if (regnum == SPARC64_FSR_REGNUM) |
| 879 | return sparc64_fsr_type (gdbarch); |
| 880 | if (regnum == SPARC64_FPRS_REGNUM) |
| 881 | return sparc64_fprs_type (gdbarch); |
| 882 | /* "Although Y is a 64-bit register, its high-order 32 bits are |
| 883 | reserved and always read as 0." */ |
| 884 | if (regnum == SPARC64_Y_REGNUM) |
| 885 | return builtin_type (gdbarch)->builtin_int64; |
| 886 | |
| 887 | /* Pseudo registers. */ |
| 888 | if (regnum >= gdbarch_num_regs (gdbarch)) |
| 889 | return sparc64_pseudo_register_type (gdbarch, regnum); |
| 890 | |
| 891 | internal_error (__FILE__, __LINE__, _("invalid regnum")); |
| 892 | } |
| 893 | |
| 894 | static enum register_status |
| 895 | sparc64_pseudo_register_read (struct gdbarch *gdbarch, |
| 896 | readable_regcache *regcache, |
| 897 | int regnum, gdb_byte *buf) |
| 898 | { |
| 899 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 900 | enum register_status status; |
| 901 | |
| 902 | regnum -= gdbarch_num_regs (gdbarch); |
| 903 | |
| 904 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) |
| 905 | { |
| 906 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); |
| 907 | status = regcache->raw_read (regnum, buf); |
| 908 | if (status == REG_VALID) |
| 909 | status = regcache->raw_read (regnum + 1, buf + 4); |
| 910 | return status; |
| 911 | } |
| 912 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) |
| 913 | { |
| 914 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); |
| 915 | return regcache->raw_read (regnum, buf); |
| 916 | } |
| 917 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) |
| 918 | { |
| 919 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); |
| 920 | |
| 921 | status = regcache->raw_read (regnum, buf); |
| 922 | if (status == REG_VALID) |
| 923 | status = regcache->raw_read (regnum + 1, buf + 4); |
| 924 | if (status == REG_VALID) |
| 925 | status = regcache->raw_read (regnum + 2, buf + 8); |
| 926 | if (status == REG_VALID) |
| 927 | status = regcache->raw_read (regnum + 3, buf + 12); |
| 928 | |
| 929 | return status; |
| 930 | } |
| 931 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) |
| 932 | { |
| 933 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); |
| 934 | |
| 935 | status = regcache->raw_read (regnum, buf); |
| 936 | if (status == REG_VALID) |
| 937 | status = regcache->raw_read (regnum + 1, buf + 8); |
| 938 | |
| 939 | return status; |
| 940 | } |
| 941 | else if (regnum == SPARC64_CWP_REGNUM |
| 942 | || regnum == SPARC64_PSTATE_REGNUM |
| 943 | || regnum == SPARC64_ASI_REGNUM |
| 944 | || regnum == SPARC64_CCR_REGNUM) |
| 945 | { |
| 946 | ULONGEST state; |
| 947 | |
| 948 | status = regcache->raw_read (SPARC64_STATE_REGNUM, &state); |
| 949 | if (status != REG_VALID) |
| 950 | return status; |
| 951 | |
| 952 | switch (regnum) |
| 953 | { |
| 954 | case SPARC64_CWP_REGNUM: |
| 955 | state = (state >> 0) & ((1 << 5) - 1); |
| 956 | break; |
| 957 | case SPARC64_PSTATE_REGNUM: |
| 958 | state = (state >> 8) & ((1 << 12) - 1); |
| 959 | break; |
| 960 | case SPARC64_ASI_REGNUM: |
| 961 | state = (state >> 24) & ((1 << 8) - 1); |
| 962 | break; |
| 963 | case SPARC64_CCR_REGNUM: |
| 964 | state = (state >> 32) & ((1 << 8) - 1); |
| 965 | break; |
| 966 | } |
| 967 | store_unsigned_integer (buf, 8, byte_order, state); |
| 968 | } |
| 969 | |
| 970 | return REG_VALID; |
| 971 | } |
| 972 | |
| 973 | static void |
| 974 | sparc64_pseudo_register_write (struct gdbarch *gdbarch, |
| 975 | struct regcache *regcache, |
| 976 | int regnum, const gdb_byte *buf) |
| 977 | { |
| 978 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 979 | |
| 980 | regnum -= gdbarch_num_regs (gdbarch); |
| 981 | |
| 982 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) |
| 983 | { |
| 984 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); |
| 985 | regcache->raw_write (regnum, buf); |
| 986 | regcache->raw_write (regnum + 1, buf + 4); |
| 987 | } |
| 988 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) |
| 989 | { |
| 990 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); |
| 991 | regcache->raw_write (regnum, buf); |
| 992 | } |
| 993 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) |
| 994 | { |
| 995 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); |
| 996 | regcache->raw_write (regnum, buf); |
| 997 | regcache->raw_write (regnum + 1, buf + 4); |
| 998 | regcache->raw_write (regnum + 2, buf + 8); |
| 999 | regcache->raw_write (regnum + 3, buf + 12); |
| 1000 | } |
| 1001 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) |
| 1002 | { |
| 1003 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); |
| 1004 | regcache->raw_write (regnum, buf); |
| 1005 | regcache->raw_write (regnum + 1, buf + 8); |
| 1006 | } |
| 1007 | else if (regnum == SPARC64_CWP_REGNUM |
| 1008 | || regnum == SPARC64_PSTATE_REGNUM |
| 1009 | || regnum == SPARC64_ASI_REGNUM |
| 1010 | || regnum == SPARC64_CCR_REGNUM) |
| 1011 | { |
| 1012 | ULONGEST state, bits; |
| 1013 | |
| 1014 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); |
| 1015 | bits = extract_unsigned_integer (buf, 8, byte_order); |
| 1016 | switch (regnum) |
| 1017 | { |
| 1018 | case SPARC64_CWP_REGNUM: |
| 1019 | state |= ((bits & ((1 << 5) - 1)) << 0); |
| 1020 | break; |
| 1021 | case SPARC64_PSTATE_REGNUM: |
| 1022 | state |= ((bits & ((1 << 12) - 1)) << 8); |
| 1023 | break; |
| 1024 | case SPARC64_ASI_REGNUM: |
| 1025 | state |= ((bits & ((1 << 8) - 1)) << 24); |
| 1026 | break; |
| 1027 | case SPARC64_CCR_REGNUM: |
| 1028 | state |= ((bits & ((1 << 8) - 1)) << 32); |
| 1029 | break; |
| 1030 | } |
| 1031 | regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); |
| 1032 | } |
| 1033 | } |
| 1034 | \f |
| 1035 | |
| 1036 | /* Return PC of first real instruction of the function starting at |
| 1037 | START_PC. */ |
| 1038 | |
| 1039 | static CORE_ADDR |
| 1040 | sparc64_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR start_pc) |
| 1041 | { |
| 1042 | struct symtab_and_line sal; |
| 1043 | CORE_ADDR func_start, func_end; |
| 1044 | struct sparc_frame_cache cache; |
| 1045 | |
| 1046 | /* This is the preferred method, find the end of the prologue by |
| 1047 | using the debugging information. */ |
| 1048 | if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) |
| 1049 | { |
| 1050 | sal = find_pc_line (func_start, 0); |
| 1051 | |
| 1052 | if (sal.end < func_end |
| 1053 | && start_pc <= sal.end) |
| 1054 | return sal.end; |
| 1055 | } |
| 1056 | |
| 1057 | return sparc_analyze_prologue (gdbarch, start_pc, 0xffffffffffffffffULL, |
| 1058 | &cache); |
| 1059 | } |
| 1060 | |
| 1061 | /* Normal frames. */ |
| 1062 | |
| 1063 | static struct sparc_frame_cache * |
| 1064 | sparc64_frame_cache (struct frame_info *this_frame, void **this_cache) |
| 1065 | { |
| 1066 | return sparc_frame_cache (this_frame, this_cache); |
| 1067 | } |
| 1068 | |
| 1069 | static void |
| 1070 | sparc64_frame_this_id (struct frame_info *this_frame, void **this_cache, |
| 1071 | struct frame_id *this_id) |
| 1072 | { |
| 1073 | struct sparc_frame_cache *cache = |
| 1074 | sparc64_frame_cache (this_frame, this_cache); |
| 1075 | |
| 1076 | /* This marks the outermost frame. */ |
| 1077 | if (cache->base == 0) |
| 1078 | return; |
| 1079 | |
| 1080 | (*this_id) = frame_id_build (cache->base, cache->pc); |
| 1081 | } |
| 1082 | |
| 1083 | static struct value * |
| 1084 | sparc64_frame_prev_register (struct frame_info *this_frame, void **this_cache, |
| 1085 | int regnum) |
| 1086 | { |
| 1087 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 1088 | struct sparc_frame_cache *cache = |
| 1089 | sparc64_frame_cache (this_frame, this_cache); |
| 1090 | |
| 1091 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) |
| 1092 | { |
| 1093 | CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; |
| 1094 | |
| 1095 | regnum = |
| 1096 | (cache->copied_regs_mask & 0x80) ? SPARC_I7_REGNUM : SPARC_O7_REGNUM; |
| 1097 | pc += get_frame_register_unsigned (this_frame, regnum) + 8; |
| 1098 | return frame_unwind_got_constant (this_frame, regnum, pc); |
| 1099 | } |
| 1100 | |
| 1101 | /* Handle StackGhost. */ |
| 1102 | { |
| 1103 | ULONGEST wcookie = sparc_fetch_wcookie (gdbarch); |
| 1104 | |
| 1105 | if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM) |
| 1106 | { |
| 1107 | CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; |
| 1108 | ULONGEST i7; |
| 1109 | |
| 1110 | /* Read the value in from memory. */ |
| 1111 | i7 = get_frame_memory_unsigned (this_frame, addr, 8); |
| 1112 | return frame_unwind_got_constant (this_frame, regnum, i7 ^ wcookie); |
| 1113 | } |
| 1114 | } |
| 1115 | |
| 1116 | /* The previous frame's `local' and `in' registers may have been saved |
| 1117 | in the register save area. */ |
| 1118 | if (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM |
| 1119 | && (cache->saved_regs_mask & (1 << (regnum - SPARC_L0_REGNUM)))) |
| 1120 | { |
| 1121 | CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; |
| 1122 | |
| 1123 | return frame_unwind_got_memory (this_frame, regnum, addr); |
| 1124 | } |
| 1125 | |
| 1126 | /* The previous frame's `out' registers may be accessible as the current |
| 1127 | frame's `in' registers. */ |
| 1128 | if (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM |
| 1129 | && (cache->copied_regs_mask & (1 << (regnum - SPARC_O0_REGNUM)))) |
| 1130 | regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); |
| 1131 | |
| 1132 | return frame_unwind_got_register (this_frame, regnum, regnum); |
| 1133 | } |
| 1134 | |
| 1135 | static const struct frame_unwind sparc64_frame_unwind = |
| 1136 | { |
| 1137 | NORMAL_FRAME, |
| 1138 | default_frame_unwind_stop_reason, |
| 1139 | sparc64_frame_this_id, |
| 1140 | sparc64_frame_prev_register, |
| 1141 | NULL, |
| 1142 | default_frame_sniffer |
| 1143 | }; |
| 1144 | \f |
| 1145 | |
| 1146 | static CORE_ADDR |
| 1147 | sparc64_frame_base_address (struct frame_info *this_frame, void **this_cache) |
| 1148 | { |
| 1149 | struct sparc_frame_cache *cache = |
| 1150 | sparc64_frame_cache (this_frame, this_cache); |
| 1151 | |
| 1152 | return cache->base; |
| 1153 | } |
| 1154 | |
| 1155 | static const struct frame_base sparc64_frame_base = |
| 1156 | { |
| 1157 | &sparc64_frame_unwind, |
| 1158 | sparc64_frame_base_address, |
| 1159 | sparc64_frame_base_address, |
| 1160 | sparc64_frame_base_address |
| 1161 | }; |
| 1162 | \f |
| 1163 | /* Check whether TYPE must be 16-byte aligned. */ |
| 1164 | |
| 1165 | static int |
| 1166 | sparc64_16_byte_align_p (struct type *type) |
| 1167 | { |
| 1168 | if (type->code () == TYPE_CODE_ARRAY) |
| 1169 | { |
| 1170 | struct type *t = check_typedef (TYPE_TARGET_TYPE (type)); |
| 1171 | |
| 1172 | if (sparc64_floating_p (t)) |
| 1173 | return 1; |
| 1174 | } |
| 1175 | if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16) |
| 1176 | return 1; |
| 1177 | |
| 1178 | if (sparc64_structure_or_union_p (type)) |
| 1179 | { |
| 1180 | int i; |
| 1181 | |
| 1182 | for (i = 0; i < type->num_fields (); i++) |
| 1183 | { |
| 1184 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| 1185 | |
| 1186 | if (sparc64_16_byte_align_p (subtype)) |
| 1187 | return 1; |
| 1188 | } |
| 1189 | } |
| 1190 | |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | /* Store floating fields of element ELEMENT of an "parameter array" |
| 1195 | that has type TYPE and is stored at BITPOS in VALBUF in the |
| 1196 | appropriate registers of REGCACHE. This function can be called |
| 1197 | recursively and therefore handles floating types in addition to |
| 1198 | structures. */ |
| 1199 | |
| 1200 | static void |
| 1201 | sparc64_store_floating_fields (struct regcache *regcache, struct type *type, |
| 1202 | const gdb_byte *valbuf, int element, int bitpos) |
| 1203 | { |
| 1204 | struct gdbarch *gdbarch = regcache->arch (); |
| 1205 | int len = TYPE_LENGTH (type); |
| 1206 | |
| 1207 | gdb_assert (element < 16); |
| 1208 | |
| 1209 | if (type->code () == TYPE_CODE_ARRAY) |
| 1210 | { |
| 1211 | gdb_byte buf[8]; |
| 1212 | int regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; |
| 1213 | |
| 1214 | valbuf += bitpos / 8; |
| 1215 | if (len < 8) |
| 1216 | { |
| 1217 | memset (buf, 0, 8 - len); |
| 1218 | memcpy (buf + 8 - len, valbuf, len); |
| 1219 | valbuf = buf; |
| 1220 | len = 8; |
| 1221 | } |
| 1222 | for (int n = 0; n < (len + 3) / 4; n++) |
| 1223 | regcache->cooked_write (regnum + n, valbuf + n * 4); |
| 1224 | } |
| 1225 | else if (sparc64_floating_p (type) |
| 1226 | || (sparc64_complex_floating_p (type) && len <= 16)) |
| 1227 | { |
| 1228 | int regnum; |
| 1229 | |
| 1230 | if (len == 16) |
| 1231 | { |
| 1232 | gdb_assert (bitpos == 0); |
| 1233 | gdb_assert ((element % 2) == 0); |
| 1234 | |
| 1235 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM + element / 2; |
| 1236 | regcache->cooked_write (regnum, valbuf); |
| 1237 | } |
| 1238 | else if (len == 8) |
| 1239 | { |
| 1240 | gdb_assert (bitpos == 0 || bitpos == 64); |
| 1241 | |
| 1242 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM |
| 1243 | + element + bitpos / 64; |
| 1244 | regcache->cooked_write (regnum, valbuf + (bitpos / 8)); |
| 1245 | } |
| 1246 | else |
| 1247 | { |
| 1248 | gdb_assert (len == 4); |
| 1249 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128); |
| 1250 | |
| 1251 | regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; |
| 1252 | regcache->cooked_write (regnum, valbuf + (bitpos / 8)); |
| 1253 | } |
| 1254 | } |
| 1255 | else if (sparc64_structure_or_union_p (type)) |
| 1256 | { |
| 1257 | int i; |
| 1258 | |
| 1259 | for (i = 0; i < type->num_fields (); i++) |
| 1260 | { |
| 1261 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| 1262 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); |
| 1263 | |
| 1264 | sparc64_store_floating_fields (regcache, subtype, valbuf, |
| 1265 | element, subpos); |
| 1266 | } |
| 1267 | |
| 1268 | /* GCC has an interesting bug. If TYPE is a structure that has |
| 1269 | a single `float' member, GCC doesn't treat it as a structure |
| 1270 | at all, but rather as an ordinary `float' argument. This |
| 1271 | argument will be stored in %f1, as required by the psABI. |
| 1272 | However, as a member of a structure the psABI requires it to |
| 1273 | be stored in %f0. This bug is present in GCC 3.3.2, but |
| 1274 | probably in older releases to. To appease GCC, if a |
| 1275 | structure has only a single `float' member, we store its |
| 1276 | value in %f1 too (we already have stored in %f0). */ |
| 1277 | if (type->num_fields () == 1) |
| 1278 | { |
| 1279 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); |
| 1280 | |
| 1281 | if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) |
| 1282 | regcache->cooked_write (SPARC_F1_REGNUM, valbuf); |
| 1283 | } |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | /* Fetch floating fields from a variable of type TYPE from the |
| 1288 | appropriate registers for BITPOS in REGCACHE and store it at BITPOS |
| 1289 | in VALBUF. This function can be called recursively and therefore |
| 1290 | handles floating types in addition to structures. */ |
| 1291 | |
| 1292 | static void |
| 1293 | sparc64_extract_floating_fields (struct regcache *regcache, struct type *type, |
| 1294 | gdb_byte *valbuf, int bitpos) |
| 1295 | { |
| 1296 | struct gdbarch *gdbarch = regcache->arch (); |
| 1297 | |
| 1298 | if (type->code () == TYPE_CODE_ARRAY) |
| 1299 | { |
| 1300 | int len = TYPE_LENGTH (type); |
| 1301 | int regnum = SPARC_F0_REGNUM + bitpos / 32; |
| 1302 | |
| 1303 | valbuf += bitpos / 8; |
| 1304 | if (len < 4) |
| 1305 | { |
| 1306 | gdb_byte buf[4]; |
| 1307 | regcache->cooked_read (regnum, buf); |
| 1308 | memcpy (valbuf, buf + 4 - len, len); |
| 1309 | } |
| 1310 | else |
| 1311 | for (int i = 0; i < (len + 3) / 4; i++) |
| 1312 | regcache->cooked_read (regnum + i, valbuf + i * 4); |
| 1313 | } |
| 1314 | else if (sparc64_floating_p (type)) |
| 1315 | { |
| 1316 | int len = TYPE_LENGTH (type); |
| 1317 | int regnum; |
| 1318 | |
| 1319 | if (len == 16) |
| 1320 | { |
| 1321 | gdb_assert (bitpos == 0 || bitpos == 128); |
| 1322 | |
| 1323 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM |
| 1324 | + bitpos / 128; |
| 1325 | regcache->cooked_read (regnum, valbuf + (bitpos / 8)); |
| 1326 | } |
| 1327 | else if (len == 8) |
| 1328 | { |
| 1329 | gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256); |
| 1330 | |
| 1331 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM + bitpos / 64; |
| 1332 | regcache->cooked_read (regnum, valbuf + (bitpos / 8)); |
| 1333 | } |
| 1334 | else |
| 1335 | { |
| 1336 | gdb_assert (len == 4); |
| 1337 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256); |
| 1338 | |
| 1339 | regnum = SPARC_F0_REGNUM + bitpos / 32; |
| 1340 | regcache->cooked_read (regnum, valbuf + (bitpos / 8)); |
| 1341 | } |
| 1342 | } |
| 1343 | else if (sparc64_structure_or_union_p (type)) |
| 1344 | { |
| 1345 | int i; |
| 1346 | |
| 1347 | for (i = 0; i < type->num_fields (); i++) |
| 1348 | { |
| 1349 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); |
| 1350 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); |
| 1351 | |
| 1352 | sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos); |
| 1353 | } |
| 1354 | } |
| 1355 | } |
| 1356 | |
| 1357 | /* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is |
| 1358 | non-zero) in REGCACHE and on the stack (starting from address SP). */ |
| 1359 | |
| 1360 | static CORE_ADDR |
| 1361 | sparc64_store_arguments (struct regcache *regcache, int nargs, |
| 1362 | struct value **args, CORE_ADDR sp, |
| 1363 | function_call_return_method return_method, |
| 1364 | CORE_ADDR struct_addr) |
| 1365 | { |
| 1366 | struct gdbarch *gdbarch = regcache->arch (); |
| 1367 | /* Number of extended words in the "parameter array". */ |
| 1368 | int num_elements = 0; |
| 1369 | int element = 0; |
| 1370 | int i; |
| 1371 | |
| 1372 | /* Take BIAS into account. */ |
| 1373 | sp += BIAS; |
| 1374 | |
| 1375 | /* First we calculate the number of extended words in the "parameter |
| 1376 | array". While doing so we also convert some of the arguments. */ |
| 1377 | |
| 1378 | if (return_method == return_method_struct) |
| 1379 | num_elements++; |
| 1380 | |
| 1381 | for (i = 0; i < nargs; i++) |
| 1382 | { |
| 1383 | struct type *type = value_type (args[i]); |
| 1384 | int len = TYPE_LENGTH (type); |
| 1385 | |
| 1386 | if (sparc64_structure_or_union_p (type) |
| 1387 | || (sparc64_complex_floating_p (type) && len == 32)) |
| 1388 | { |
| 1389 | /* Structure or Union arguments. */ |
| 1390 | if (len <= 16) |
| 1391 | { |
| 1392 | if (num_elements % 2 && sparc64_16_byte_align_p (type)) |
| 1393 | num_elements++; |
| 1394 | num_elements += ((len + 7) / 8); |
| 1395 | } |
| 1396 | else |
| 1397 | { |
| 1398 | /* The psABI says that "Structures or unions larger than |
| 1399 | sixteen bytes are copied by the caller and passed |
| 1400 | indirectly; the caller will pass the address of a |
| 1401 | correctly aligned structure value. This sixty-four |
| 1402 | bit address will occupy one word in the parameter |
| 1403 | array, and may be promoted to an %o register like any |
| 1404 | other pointer value." Allocate memory for these |
| 1405 | values on the stack. */ |
| 1406 | sp -= len; |
| 1407 | |
| 1408 | /* Use 16-byte alignment for these values. That's |
| 1409 | always correct, and wasting a few bytes shouldn't be |
| 1410 | a problem. */ |
| 1411 | sp &= ~0xf; |
| 1412 | |
| 1413 | write_memory (sp, value_contents (args[i]), len); |
| 1414 | args[i] = value_from_pointer (lookup_pointer_type (type), sp); |
| 1415 | num_elements++; |
| 1416 | } |
| 1417 | } |
| 1418 | else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type)) |
| 1419 | { |
| 1420 | /* Floating arguments. */ |
| 1421 | if (len == 16) |
| 1422 | { |
| 1423 | /* The psABI says that "Each quad-precision parameter |
| 1424 | value will be assigned to two extended words in the |
| 1425 | parameter array. */ |
| 1426 | num_elements += 2; |
| 1427 | |
| 1428 | /* The psABI says that "Long doubles must be |
| 1429 | quad-aligned, and thus a hole might be introduced |
| 1430 | into the parameter array to force alignment." Skip |
| 1431 | an element if necessary. */ |
| 1432 | if ((num_elements % 2) && sparc64_16_byte_align_p (type)) |
| 1433 | num_elements++; |
| 1434 | } |
| 1435 | else |
| 1436 | num_elements++; |
| 1437 | } |
| 1438 | else |
| 1439 | { |
| 1440 | /* Integral and pointer arguments. */ |
| 1441 | gdb_assert (sparc64_integral_or_pointer_p (type)); |
| 1442 | |
| 1443 | /* The psABI says that "Each argument value of integral type |
| 1444 | smaller than an extended word will be widened by the |
| 1445 | caller to an extended word according to the signed-ness |
| 1446 | of the argument type." */ |
| 1447 | if (len < 8) |
| 1448 | args[i] = value_cast (builtin_type (gdbarch)->builtin_int64, |
| 1449 | args[i]); |
| 1450 | num_elements++; |
| 1451 | } |
| 1452 | } |
| 1453 | |
| 1454 | /* Allocate the "parameter array". */ |
| 1455 | sp -= num_elements * 8; |
| 1456 | |
| 1457 | /* The psABI says that "Every stack frame must be 16-byte aligned." */ |
| 1458 | sp &= ~0xf; |
| 1459 | |
| 1460 | /* Now we store the arguments in to the "parameter array". Some |
| 1461 | Integer or Pointer arguments and Structure or Union arguments |
| 1462 | will be passed in %o registers. Some Floating arguments and |
| 1463 | floating members of structures are passed in floating-point |
| 1464 | registers. However, for functions with variable arguments, |
| 1465 | floating arguments are stored in an %0 register, and for |
| 1466 | functions without a prototype floating arguments are stored in |
| 1467 | both a floating-point and an %o registers, or a floating-point |
| 1468 | register and memory. To simplify the logic here we always pass |
| 1469 | arguments in memory, an %o register, and a floating-point |
| 1470 | register if appropriate. This should be no problem since the |
| 1471 | contents of any unused memory or registers in the "parameter |
| 1472 | array" are undefined. */ |
| 1473 | |
| 1474 | if (return_method == return_method_struct) |
| 1475 | { |
| 1476 | regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr); |
| 1477 | element++; |
| 1478 | } |
| 1479 | |
| 1480 | for (i = 0; i < nargs; i++) |
| 1481 | { |
| 1482 | const gdb_byte *valbuf = value_contents (args[i]); |
| 1483 | struct type *type = value_type (args[i]); |
| 1484 | int len = TYPE_LENGTH (type); |
| 1485 | int regnum = -1; |
| 1486 | gdb_byte buf[16]; |
| 1487 | |
| 1488 | if (sparc64_structure_or_union_p (type) |
| 1489 | || (sparc64_complex_floating_p (type) && len == 32)) |
| 1490 | { |
| 1491 | /* Structure, Union or long double Complex arguments. */ |
| 1492 | gdb_assert (len <= 16); |
| 1493 | memset (buf, 0, sizeof (buf)); |
| 1494 | memcpy (buf, valbuf, len); |
| 1495 | valbuf = buf; |
| 1496 | |
| 1497 | if (element % 2 && sparc64_16_byte_align_p (type)) |
| 1498 | element++; |
| 1499 | |
| 1500 | if (element < 6) |
| 1501 | { |
| 1502 | regnum = SPARC_O0_REGNUM + element; |
| 1503 | if (len > 8 && element < 5) |
| 1504 | regcache->cooked_write (regnum + 1, valbuf + 8); |
| 1505 | } |
| 1506 | |
| 1507 | if (element < 16) |
| 1508 | sparc64_store_floating_fields (regcache, type, valbuf, element, 0); |
| 1509 | } |
| 1510 | else if (sparc64_complex_floating_p (type)) |
| 1511 | { |
| 1512 | /* Float Complex or double Complex arguments. */ |
| 1513 | if (element < 16) |
| 1514 | { |
| 1515 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM + element; |
| 1516 | |
| 1517 | if (len == 16) |
| 1518 | { |
| 1519 | if (regnum < gdbarch_num_regs (gdbarch) + SPARC64_D30_REGNUM) |
| 1520 | regcache->cooked_write (regnum + 1, valbuf + 8); |
| 1521 | if (regnum < gdbarch_num_regs (gdbarch) + SPARC64_D10_REGNUM) |
| 1522 | regcache->cooked_write (SPARC_O0_REGNUM + element + 1, |
| 1523 | valbuf + 8); |
| 1524 | } |
| 1525 | } |
| 1526 | } |
| 1527 | else if (sparc64_floating_p (type)) |
| 1528 | { |
| 1529 | /* Floating arguments. */ |
| 1530 | if (len == 16) |
| 1531 | { |
| 1532 | if (element % 2) |
| 1533 | element++; |
| 1534 | if (element < 16) |
| 1535 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_Q0_REGNUM |
| 1536 | + element / 2; |
| 1537 | } |
| 1538 | else if (len == 8) |
| 1539 | { |
| 1540 | if (element < 16) |
| 1541 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM |
| 1542 | + element; |
| 1543 | } |
| 1544 | else if (len == 4) |
| 1545 | { |
| 1546 | /* The psABI says "Each single-precision parameter value |
| 1547 | will be assigned to one extended word in the |
| 1548 | parameter array, and right-justified within that |
| 1549 | word; the left half (even float register) is |
| 1550 | undefined." Even though the psABI says that "the |
| 1551 | left half is undefined", set it to zero here. */ |
| 1552 | memset (buf, 0, 4); |
| 1553 | memcpy (buf + 4, valbuf, 4); |
| 1554 | valbuf = buf; |
| 1555 | len = 8; |
| 1556 | if (element < 16) |
| 1557 | regnum = gdbarch_num_regs (gdbarch) + SPARC64_D0_REGNUM |
| 1558 | + element; |
| 1559 | } |
| 1560 | } |
| 1561 | else |
| 1562 | { |
| 1563 | /* Integral and pointer arguments. */ |
| 1564 | gdb_assert (len == 8); |
| 1565 | if (element < 6) |
| 1566 | regnum = SPARC_O0_REGNUM + element; |
| 1567 | } |
| 1568 | |
| 1569 | if (regnum != -1) |
| 1570 | { |
| 1571 | regcache->cooked_write (regnum, valbuf); |
| 1572 | |
| 1573 | /* If we're storing the value in a floating-point register, |
| 1574 | also store it in the corresponding %0 register(s). */ |
| 1575 | if (regnum >= gdbarch_num_regs (gdbarch)) |
| 1576 | { |
| 1577 | regnum -= gdbarch_num_regs (gdbarch); |
| 1578 | |
| 1579 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM) |
| 1580 | { |
| 1581 | gdb_assert (element < 6); |
| 1582 | regnum = SPARC_O0_REGNUM + element; |
| 1583 | regcache->cooked_write (regnum, valbuf); |
| 1584 | } |
| 1585 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM) |
| 1586 | { |
| 1587 | gdb_assert (element < 5); |
| 1588 | regnum = SPARC_O0_REGNUM + element; |
| 1589 | regcache->cooked_write (regnum, valbuf); |
| 1590 | regcache->cooked_write (regnum + 1, valbuf + 8); |
| 1591 | } |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | /* Always store the argument in memory. */ |
| 1596 | write_memory (sp + element * 8, valbuf, len); |
| 1597 | element += ((len + 7) / 8); |
| 1598 | } |
| 1599 | |
| 1600 | gdb_assert (element == num_elements); |
| 1601 | |
| 1602 | /* Take BIAS into account. */ |
| 1603 | sp -= BIAS; |
| 1604 | return sp; |
| 1605 | } |
| 1606 | |
| 1607 | static CORE_ADDR |
| 1608 | sparc64_frame_align (struct gdbarch *gdbarch, CORE_ADDR address) |
| 1609 | { |
| 1610 | /* The ABI requires 16-byte alignment. */ |
| 1611 | return address & ~0xf; |
| 1612 | } |
| 1613 | |
| 1614 | static CORE_ADDR |
| 1615 | sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
| 1616 | struct regcache *regcache, CORE_ADDR bp_addr, |
| 1617 | int nargs, struct value **args, CORE_ADDR sp, |
| 1618 | function_call_return_method return_method, |
| 1619 | CORE_ADDR struct_addr) |
| 1620 | { |
| 1621 | /* Set return address. */ |
| 1622 | regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8); |
| 1623 | |
| 1624 | /* Set up function arguments. */ |
| 1625 | sp = sparc64_store_arguments (regcache, nargs, args, sp, return_method, |
| 1626 | struct_addr); |
| 1627 | |
| 1628 | /* Allocate the register save area. */ |
| 1629 | sp -= 16 * 8; |
| 1630 | |
| 1631 | /* Stack should be 16-byte aligned at this point. */ |
| 1632 | gdb_assert ((sp + BIAS) % 16 == 0); |
| 1633 | |
| 1634 | /* Finally, update the stack pointer. */ |
| 1635 | regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); |
| 1636 | |
| 1637 | return sp + BIAS; |
| 1638 | } |
| 1639 | \f |
| 1640 | |
| 1641 | /* Extract from an array REGBUF containing the (raw) register state, a |
| 1642 | function return value of TYPE, and copy that into VALBUF. */ |
| 1643 | |
| 1644 | static void |
| 1645 | sparc64_extract_return_value (struct type *type, struct regcache *regcache, |
| 1646 | gdb_byte *valbuf) |
| 1647 | { |
| 1648 | int len = TYPE_LENGTH (type); |
| 1649 | gdb_byte buf[32]; |
| 1650 | int i; |
| 1651 | |
| 1652 | if (sparc64_structure_or_union_p (type)) |
| 1653 | { |
| 1654 | /* Structure or Union return values. */ |
| 1655 | gdb_assert (len <= 32); |
| 1656 | |
| 1657 | for (i = 0; i < ((len + 7) / 8); i++) |
| 1658 | regcache->cooked_read (SPARC_O0_REGNUM + i, buf + i * 8); |
| 1659 | if (type->code () != TYPE_CODE_UNION) |
| 1660 | sparc64_extract_floating_fields (regcache, type, buf, 0); |
| 1661 | memcpy (valbuf, buf, len); |
| 1662 | } |
| 1663 | else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type)) |
| 1664 | { |
| 1665 | /* Floating return values. */ |
| 1666 | for (i = 0; i < len / 4; i++) |
| 1667 | regcache->cooked_read (SPARC_F0_REGNUM + i, buf + i * 4); |
| 1668 | memcpy (valbuf, buf, len); |
| 1669 | } |
| 1670 | else if (type->code () == TYPE_CODE_ARRAY) |
| 1671 | { |
| 1672 | /* Small arrays are returned the same way as small structures. */ |
| 1673 | gdb_assert (len <= 32); |
| 1674 | |
| 1675 | for (i = 0; i < ((len + 7) / 8); i++) |
| 1676 | regcache->cooked_read (SPARC_O0_REGNUM + i, buf + i * 8); |
| 1677 | memcpy (valbuf, buf, len); |
| 1678 | } |
| 1679 | else |
| 1680 | { |
| 1681 | /* Integral and pointer return values. */ |
| 1682 | gdb_assert (sparc64_integral_or_pointer_p (type)); |
| 1683 | |
| 1684 | /* Just stripping off any unused bytes should preserve the |
| 1685 | signed-ness just fine. */ |
| 1686 | regcache->cooked_read (SPARC_O0_REGNUM, buf); |
| 1687 | memcpy (valbuf, buf + 8 - len, len); |
| 1688 | } |
| 1689 | } |
| 1690 | |
| 1691 | /* Write into the appropriate registers a function return value stored |
| 1692 | in VALBUF of type TYPE. */ |
| 1693 | |
| 1694 | static void |
| 1695 | sparc64_store_return_value (struct type *type, struct regcache *regcache, |
| 1696 | const gdb_byte *valbuf) |
| 1697 | { |
| 1698 | int len = TYPE_LENGTH (type); |
| 1699 | gdb_byte buf[16]; |
| 1700 | int i; |
| 1701 | |
| 1702 | if (sparc64_structure_or_union_p (type)) |
| 1703 | { |
| 1704 | /* Structure or Union return values. */ |
| 1705 | gdb_assert (len <= 32); |
| 1706 | |
| 1707 | /* Simplify matters by storing the complete value (including |
| 1708 | floating members) into %o0 and %o1. Floating members are |
| 1709 | also store in the appropriate floating-point registers. */ |
| 1710 | memset (buf, 0, sizeof (buf)); |
| 1711 | memcpy (buf, valbuf, len); |
| 1712 | for (i = 0; i < ((len + 7) / 8); i++) |
| 1713 | regcache->cooked_write (SPARC_O0_REGNUM + i, buf + i * 8); |
| 1714 | if (type->code () != TYPE_CODE_UNION) |
| 1715 | sparc64_store_floating_fields (regcache, type, buf, 0, 0); |
| 1716 | } |
| 1717 | else if (sparc64_floating_p (type) || sparc64_complex_floating_p (type)) |
| 1718 | { |
| 1719 | /* Floating return values. */ |
| 1720 | memcpy (buf, valbuf, len); |
| 1721 | for (i = 0; i < len / 4; i++) |
| 1722 | regcache->cooked_write (SPARC_F0_REGNUM + i, buf + i * 4); |
| 1723 | } |
| 1724 | else if (type->code () == TYPE_CODE_ARRAY) |
| 1725 | { |
| 1726 | /* Small arrays are returned the same way as small structures. */ |
| 1727 | gdb_assert (len <= 32); |
| 1728 | |
| 1729 | memset (buf, 0, sizeof (buf)); |
| 1730 | memcpy (buf, valbuf, len); |
| 1731 | for (i = 0; i < ((len + 7) / 8); i++) |
| 1732 | regcache->cooked_write (SPARC_O0_REGNUM + i, buf + i * 8); |
| 1733 | } |
| 1734 | else |
| 1735 | { |
| 1736 | /* Integral and pointer return values. */ |
| 1737 | gdb_assert (sparc64_integral_or_pointer_p (type)); |
| 1738 | |
| 1739 | /* ??? Do we need to do any sign-extension here? */ |
| 1740 | memset (buf, 0, 8); |
| 1741 | memcpy (buf + 8 - len, valbuf, len); |
| 1742 | regcache->cooked_write (SPARC_O0_REGNUM, buf); |
| 1743 | } |
| 1744 | } |
| 1745 | |
| 1746 | static enum return_value_convention |
| 1747 | sparc64_return_value (struct gdbarch *gdbarch, struct value *function, |
| 1748 | struct type *type, struct regcache *regcache, |
| 1749 | gdb_byte *readbuf, const gdb_byte *writebuf) |
| 1750 | { |
| 1751 | if (TYPE_LENGTH (type) > 32) |
| 1752 | return RETURN_VALUE_STRUCT_CONVENTION; |
| 1753 | |
| 1754 | if (readbuf) |
| 1755 | sparc64_extract_return_value (type, regcache, readbuf); |
| 1756 | if (writebuf) |
| 1757 | sparc64_store_return_value (type, regcache, writebuf); |
| 1758 | |
| 1759 | return RETURN_VALUE_REGISTER_CONVENTION; |
| 1760 | } |
| 1761 | \f |
| 1762 | |
| 1763 | static void |
| 1764 | sparc64_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, |
| 1765 | struct dwarf2_frame_state_reg *reg, |
| 1766 | struct frame_info *this_frame) |
| 1767 | { |
| 1768 | switch (regnum) |
| 1769 | { |
| 1770 | case SPARC_G0_REGNUM: |
| 1771 | /* Since %g0 is always zero, there is no point in saving it, and |
| 1772 | people will be inclined omit it from the CFI. Make sure we |
| 1773 | don't warn about that. */ |
| 1774 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; |
| 1775 | break; |
| 1776 | case SPARC_SP_REGNUM: |
| 1777 | reg->how = DWARF2_FRAME_REG_CFA; |
| 1778 | break; |
| 1779 | case SPARC64_PC_REGNUM: |
| 1780 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; |
| 1781 | reg->loc.offset = 8; |
| 1782 | break; |
| 1783 | case SPARC64_NPC_REGNUM: |
| 1784 | reg->how = DWARF2_FRAME_REG_RA_OFFSET; |
| 1785 | reg->loc.offset = 12; |
| 1786 | break; |
| 1787 | } |
| 1788 | } |
| 1789 | |
| 1790 | /* sparc64_addr_bits_remove - remove useless address bits */ |
| 1791 | |
| 1792 | static CORE_ADDR |
| 1793 | sparc64_addr_bits_remove (struct gdbarch *gdbarch, CORE_ADDR addr) |
| 1794 | { |
| 1795 | return adi_normalize_address (addr); |
| 1796 | } |
| 1797 | |
| 1798 | void |
| 1799 | sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 1800 | { |
| 1801 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 1802 | |
| 1803 | tdep->pc_regnum = SPARC64_PC_REGNUM; |
| 1804 | tdep->npc_regnum = SPARC64_NPC_REGNUM; |
| 1805 | tdep->fpu_register_names = sparc64_fpu_register_names; |
| 1806 | tdep->fpu_registers_num = ARRAY_SIZE (sparc64_fpu_register_names); |
| 1807 | tdep->cp0_register_names = sparc64_cp0_register_names; |
| 1808 | tdep->cp0_registers_num = ARRAY_SIZE (sparc64_cp0_register_names); |
| 1809 | |
| 1810 | /* This is what all the fuss is about. */ |
| 1811 | set_gdbarch_long_bit (gdbarch, 64); |
| 1812 | set_gdbarch_long_long_bit (gdbarch, 64); |
| 1813 | set_gdbarch_ptr_bit (gdbarch, 64); |
| 1814 | |
| 1815 | set_gdbarch_wchar_bit (gdbarch, 16); |
| 1816 | set_gdbarch_wchar_signed (gdbarch, 0); |
| 1817 | |
| 1818 | set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS); |
| 1819 | set_gdbarch_register_name (gdbarch, sparc64_register_name); |
| 1820 | set_gdbarch_register_type (gdbarch, sparc64_register_type); |
| 1821 | set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS); |
| 1822 | set_tdesc_pseudo_register_name (gdbarch, sparc64_pseudo_register_name); |
| 1823 | set_tdesc_pseudo_register_type (gdbarch, sparc64_pseudo_register_type); |
| 1824 | set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read); |
| 1825 | set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write); |
| 1826 | |
| 1827 | /* Register numbers of various important registers. */ |
| 1828 | set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */ |
| 1829 | |
| 1830 | /* Call dummy code. */ |
| 1831 | set_gdbarch_frame_align (gdbarch, sparc64_frame_align); |
| 1832 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
| 1833 | set_gdbarch_push_dummy_code (gdbarch, NULL); |
| 1834 | set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call); |
| 1835 | |
| 1836 | set_gdbarch_return_value (gdbarch, sparc64_return_value); |
| 1837 | set_gdbarch_stabs_argument_has_addr |
| 1838 | (gdbarch, default_stabs_argument_has_addr); |
| 1839 | |
| 1840 | set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); |
| 1841 | set_gdbarch_stack_frame_destroyed_p (gdbarch, sparc_stack_frame_destroyed_p); |
| 1842 | |
| 1843 | /* Hook in the DWARF CFI frame unwinder. */ |
| 1844 | dwarf2_frame_set_init_reg (gdbarch, sparc64_dwarf2_frame_init_reg); |
| 1845 | /* FIXME: kettenis/20050423: Don't enable the unwinder until the |
| 1846 | StackGhost issues have been resolved. */ |
| 1847 | |
| 1848 | frame_unwind_append_unwinder (gdbarch, &sparc64_frame_unwind); |
| 1849 | frame_base_set_default (gdbarch, &sparc64_frame_base); |
| 1850 | |
| 1851 | set_gdbarch_addr_bits_remove (gdbarch, sparc64_addr_bits_remove); |
| 1852 | } |
| 1853 | \f |
| 1854 | |
| 1855 | /* Helper functions for dealing with register sets. */ |
| 1856 | |
| 1857 | #define TSTATE_CWP 0x000000000000001fULL |
| 1858 | #define TSTATE_ICC 0x0000000f00000000ULL |
| 1859 | #define TSTATE_XCC 0x000000f000000000ULL |
| 1860 | |
| 1861 | #define PSR_S 0x00000080 |
| 1862 | #ifndef PSR_ICC |
| 1863 | #define PSR_ICC 0x00f00000 |
| 1864 | #endif |
| 1865 | #define PSR_VERS 0x0f000000 |
| 1866 | #ifndef PSR_IMPL |
| 1867 | #define PSR_IMPL 0xf0000000 |
| 1868 | #endif |
| 1869 | #define PSR_V8PLUS 0xff000000 |
| 1870 | #define PSR_XCC 0x000f0000 |
| 1871 | |
| 1872 | void |
| 1873 | sparc64_supply_gregset (const struct sparc_gregmap *gregmap, |
| 1874 | struct regcache *regcache, |
| 1875 | int regnum, const void *gregs) |
| 1876 | { |
| 1877 | struct gdbarch *gdbarch = regcache->arch (); |
| 1878 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1879 | int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32); |
| 1880 | const gdb_byte *regs = (const gdb_byte *) gregs; |
| 1881 | gdb_byte zero[8] = { 0 }; |
| 1882 | int i; |
| 1883 | |
| 1884 | if (sparc32) |
| 1885 | { |
| 1886 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
| 1887 | { |
| 1888 | int offset = gregmap->r_tstate_offset; |
| 1889 | ULONGEST tstate, psr; |
| 1890 | gdb_byte buf[4]; |
| 1891 | |
| 1892 | tstate = extract_unsigned_integer (regs + offset, 8, byte_order); |
| 1893 | psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12) |
| 1894 | | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS); |
| 1895 | store_unsigned_integer (buf, 4, byte_order, psr); |
| 1896 | regcache->raw_supply (SPARC32_PSR_REGNUM, buf); |
| 1897 | } |
| 1898 | |
| 1899 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
| 1900 | regcache->raw_supply (SPARC32_PC_REGNUM, |
| 1901 | regs + gregmap->r_pc_offset + 4); |
| 1902 | |
| 1903 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) |
| 1904 | regcache->raw_supply (SPARC32_NPC_REGNUM, |
| 1905 | regs + gregmap->r_npc_offset + 4); |
| 1906 | |
| 1907 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
| 1908 | { |
| 1909 | int offset = gregmap->r_y_offset + 8 - gregmap->r_y_size; |
| 1910 | regcache->raw_supply (SPARC32_Y_REGNUM, regs + offset); |
| 1911 | } |
| 1912 | } |
| 1913 | else |
| 1914 | { |
| 1915 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
| 1916 | regcache->raw_supply (SPARC64_STATE_REGNUM, |
| 1917 | regs + gregmap->r_tstate_offset); |
| 1918 | |
| 1919 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
| 1920 | regcache->raw_supply (SPARC64_PC_REGNUM, |
| 1921 | regs + gregmap->r_pc_offset); |
| 1922 | |
| 1923 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
| 1924 | regcache->raw_supply (SPARC64_NPC_REGNUM, |
| 1925 | regs + gregmap->r_npc_offset); |
| 1926 | |
| 1927 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
| 1928 | { |
| 1929 | gdb_byte buf[8]; |
| 1930 | |
| 1931 | memset (buf, 0, 8); |
| 1932 | memcpy (buf + 8 - gregmap->r_y_size, |
| 1933 | regs + gregmap->r_y_offset, gregmap->r_y_size); |
| 1934 | regcache->raw_supply (SPARC64_Y_REGNUM, buf); |
| 1935 | } |
| 1936 | |
| 1937 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
| 1938 | && gregmap->r_fprs_offset != -1) |
| 1939 | regcache->raw_supply (SPARC64_FPRS_REGNUM, |
| 1940 | regs + gregmap->r_fprs_offset); |
| 1941 | } |
| 1942 | |
| 1943 | if (regnum == SPARC_G0_REGNUM || regnum == -1) |
| 1944 | regcache->raw_supply (SPARC_G0_REGNUM, &zero); |
| 1945 | |
| 1946 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) |
| 1947 | { |
| 1948 | int offset = gregmap->r_g1_offset; |
| 1949 | |
| 1950 | if (sparc32) |
| 1951 | offset += 4; |
| 1952 | |
| 1953 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) |
| 1954 | { |
| 1955 | if (regnum == i || regnum == -1) |
| 1956 | regcache->raw_supply (i, regs + offset); |
| 1957 | offset += 8; |
| 1958 | } |
| 1959 | } |
| 1960 | |
| 1961 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) |
| 1962 | { |
| 1963 | /* Not all of the register set variants include Locals and |
| 1964 | Inputs. For those that don't, we read them off the stack. */ |
| 1965 | if (gregmap->r_l0_offset == -1) |
| 1966 | { |
| 1967 | ULONGEST sp; |
| 1968 | |
| 1969 | regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp); |
| 1970 | sparc_supply_rwindow (regcache, sp, regnum); |
| 1971 | } |
| 1972 | else |
| 1973 | { |
| 1974 | int offset = gregmap->r_l0_offset; |
| 1975 | |
| 1976 | if (sparc32) |
| 1977 | offset += 4; |
| 1978 | |
| 1979 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) |
| 1980 | { |
| 1981 | if (regnum == i || regnum == -1) |
| 1982 | regcache->raw_supply (i, regs + offset); |
| 1983 | offset += 8; |
| 1984 | } |
| 1985 | } |
| 1986 | } |
| 1987 | } |
| 1988 | |
| 1989 | void |
| 1990 | sparc64_collect_gregset (const struct sparc_gregmap *gregmap, |
| 1991 | const struct regcache *regcache, |
| 1992 | int regnum, void *gregs) |
| 1993 | { |
| 1994 | struct gdbarch *gdbarch = regcache->arch (); |
| 1995 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1996 | int sparc32 = (gdbarch_ptr_bit (gdbarch) == 32); |
| 1997 | gdb_byte *regs = (gdb_byte *) gregs; |
| 1998 | int i; |
| 1999 | |
| 2000 | if (sparc32) |
| 2001 | { |
| 2002 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
| 2003 | { |
| 2004 | int offset = gregmap->r_tstate_offset; |
| 2005 | ULONGEST tstate, psr; |
| 2006 | gdb_byte buf[8]; |
| 2007 | |
| 2008 | tstate = extract_unsigned_integer (regs + offset, 8, byte_order); |
| 2009 | regcache->raw_collect (SPARC32_PSR_REGNUM, buf); |
| 2010 | psr = extract_unsigned_integer (buf, 4, byte_order); |
| 2011 | tstate |= (psr & PSR_ICC) << 12; |
| 2012 | if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS) |
| 2013 | tstate |= (psr & PSR_XCC) << 20; |
| 2014 | store_unsigned_integer (buf, 8, byte_order, tstate); |
| 2015 | memcpy (regs + offset, buf, 8); |
| 2016 | } |
| 2017 | |
| 2018 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
| 2019 | regcache->raw_collect (SPARC32_PC_REGNUM, |
| 2020 | regs + gregmap->r_pc_offset + 4); |
| 2021 | |
| 2022 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) |
| 2023 | regcache->raw_collect (SPARC32_NPC_REGNUM, |
| 2024 | regs + gregmap->r_npc_offset + 4); |
| 2025 | |
| 2026 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
| 2027 | { |
| 2028 | int offset = gregmap->r_y_offset + 8 - gregmap->r_y_size; |
| 2029 | regcache->raw_collect (SPARC32_Y_REGNUM, regs + offset); |
| 2030 | } |
| 2031 | } |
| 2032 | else |
| 2033 | { |
| 2034 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
| 2035 | regcache->raw_collect (SPARC64_STATE_REGNUM, |
| 2036 | regs + gregmap->r_tstate_offset); |
| 2037 | |
| 2038 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
| 2039 | regcache->raw_collect (SPARC64_PC_REGNUM, |
| 2040 | regs + gregmap->r_pc_offset); |
| 2041 | |
| 2042 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
| 2043 | regcache->raw_collect (SPARC64_NPC_REGNUM, |
| 2044 | regs + gregmap->r_npc_offset); |
| 2045 | |
| 2046 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
| 2047 | { |
| 2048 | gdb_byte buf[8]; |
| 2049 | |
| 2050 | regcache->raw_collect (SPARC64_Y_REGNUM, buf); |
| 2051 | memcpy (regs + gregmap->r_y_offset, |
| 2052 | buf + 8 - gregmap->r_y_size, gregmap->r_y_size); |
| 2053 | } |
| 2054 | |
| 2055 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
| 2056 | && gregmap->r_fprs_offset != -1) |
| 2057 | regcache->raw_collect (SPARC64_FPRS_REGNUM, |
| 2058 | regs + gregmap->r_fprs_offset); |
| 2059 | |
| 2060 | } |
| 2061 | |
| 2062 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) |
| 2063 | { |
| 2064 | int offset = gregmap->r_g1_offset; |
| 2065 | |
| 2066 | if (sparc32) |
| 2067 | offset += 4; |
| 2068 | |
| 2069 | /* %g0 is always zero. */ |
| 2070 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) |
| 2071 | { |
| 2072 | if (regnum == i || regnum == -1) |
| 2073 | regcache->raw_collect (i, regs + offset); |
| 2074 | offset += 8; |
| 2075 | } |
| 2076 | } |
| 2077 | |
| 2078 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) |
| 2079 | { |
| 2080 | /* Not all of the register set variants include Locals and |
| 2081 | Inputs. For those that don't, we read them off the stack. */ |
| 2082 | if (gregmap->r_l0_offset != -1) |
| 2083 | { |
| 2084 | int offset = gregmap->r_l0_offset; |
| 2085 | |
| 2086 | if (sparc32) |
| 2087 | offset += 4; |
| 2088 | |
| 2089 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) |
| 2090 | { |
| 2091 | if (regnum == i || regnum == -1) |
| 2092 | regcache->raw_collect (i, regs + offset); |
| 2093 | offset += 8; |
| 2094 | } |
| 2095 | } |
| 2096 | } |
| 2097 | } |
| 2098 | |
| 2099 | void |
| 2100 | sparc64_supply_fpregset (const struct sparc_fpregmap *fpregmap, |
| 2101 | struct regcache *regcache, |
| 2102 | int regnum, const void *fpregs) |
| 2103 | { |
| 2104 | int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32); |
| 2105 | const gdb_byte *regs = (const gdb_byte *) fpregs; |
| 2106 | int i; |
| 2107 | |
| 2108 | for (i = 0; i < 32; i++) |
| 2109 | { |
| 2110 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) |
| 2111 | regcache->raw_supply (SPARC_F0_REGNUM + i, |
| 2112 | regs + fpregmap->r_f0_offset + (i * 4)); |
| 2113 | } |
| 2114 | |
| 2115 | if (sparc32) |
| 2116 | { |
| 2117 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) |
| 2118 | regcache->raw_supply (SPARC32_FSR_REGNUM, |
| 2119 | regs + fpregmap->r_fsr_offset); |
| 2120 | } |
| 2121 | else |
| 2122 | { |
| 2123 | for (i = 0; i < 16; i++) |
| 2124 | { |
| 2125 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) |
| 2126 | regcache->raw_supply |
| 2127 | (SPARC64_F32_REGNUM + i, |
| 2128 | regs + fpregmap->r_f0_offset + (32 * 4) + (i * 8)); |
| 2129 | } |
| 2130 | |
| 2131 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) |
| 2132 | regcache->raw_supply (SPARC64_FSR_REGNUM, |
| 2133 | regs + fpregmap->r_fsr_offset); |
| 2134 | } |
| 2135 | } |
| 2136 | |
| 2137 | void |
| 2138 | sparc64_collect_fpregset (const struct sparc_fpregmap *fpregmap, |
| 2139 | const struct regcache *regcache, |
| 2140 | int regnum, void *fpregs) |
| 2141 | { |
| 2142 | int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32); |
| 2143 | gdb_byte *regs = (gdb_byte *) fpregs; |
| 2144 | int i; |
| 2145 | |
| 2146 | for (i = 0; i < 32; i++) |
| 2147 | { |
| 2148 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) |
| 2149 | regcache->raw_collect (SPARC_F0_REGNUM + i, |
| 2150 | regs + fpregmap->r_f0_offset + (i * 4)); |
| 2151 | } |
| 2152 | |
| 2153 | if (sparc32) |
| 2154 | { |
| 2155 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) |
| 2156 | regcache->raw_collect (SPARC32_FSR_REGNUM, |
| 2157 | regs + fpregmap->r_fsr_offset); |
| 2158 | } |
| 2159 | else |
| 2160 | { |
| 2161 | for (i = 0; i < 16; i++) |
| 2162 | { |
| 2163 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) |
| 2164 | regcache->raw_collect (SPARC64_F32_REGNUM + i, |
| 2165 | (regs + fpregmap->r_f0_offset |
| 2166 | + (32 * 4) + (i * 8))); |
| 2167 | } |
| 2168 | |
| 2169 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) |
| 2170 | regcache->raw_collect (SPARC64_FSR_REGNUM, |
| 2171 | regs + fpregmap->r_fsr_offset); |
| 2172 | } |
| 2173 | } |
| 2174 | |
| 2175 | const struct sparc_fpregmap sparc64_bsd_fpregmap = |
| 2176 | { |
| 2177 | 0 * 8, /* %f0 */ |
| 2178 | 32 * 8, /* %fsr */ |
| 2179 | }; |