| 1 | /* Target dependent code for the NS32000, for GDB. |
| 2 | Copyright 1986, 1988, 1991, 1992, 1994, 1995, 1998, 1999, 2000, 2001, |
| 3 | 2002, 2003 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 2 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, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "frame.h" |
| 24 | #include "gdbtypes.h" |
| 25 | #include "gdbcore.h" |
| 26 | #include "inferior.h" |
| 27 | #include "regcache.h" |
| 28 | #include "target.h" |
| 29 | #include "arch-utils.h" |
| 30 | #include "osabi.h" |
| 31 | #include "dis-asm.h" |
| 32 | |
| 33 | #include "ns32k-tdep.h" |
| 34 | #include "gdb_string.h" |
| 35 | |
| 36 | static int sign_extend (int value, int bits); |
| 37 | static CORE_ADDR ns32k_get_enter_addr (CORE_ADDR); |
| 38 | static int ns32k_localcount (CORE_ADDR enter_pc); |
| 39 | static void flip_bytes (void *, int); |
| 40 | |
| 41 | static const char * |
| 42 | ns32k_register_name_32082 (int regno) |
| 43 | { |
| 44 | static char *register_names[] = |
| 45 | { |
| 46 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 47 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", |
| 48 | "sp", "fp", "pc", "ps", |
| 49 | "l0", "l1", "l2", "l3", "xx", |
| 50 | }; |
| 51 | |
| 52 | if (regno < 0) |
| 53 | return NULL; |
| 54 | if (regno >= sizeof (register_names) / sizeof (*register_names)) |
| 55 | return NULL; |
| 56 | |
| 57 | return (register_names[regno]); |
| 58 | } |
| 59 | |
| 60 | static const char * |
| 61 | ns32k_register_name_32382 (int regno) |
| 62 | { |
| 63 | static char *register_names[] = |
| 64 | { |
| 65 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 66 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", |
| 67 | "sp", "fp", "pc", "ps", |
| 68 | "fsr", |
| 69 | "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7", "xx", |
| 70 | }; |
| 71 | |
| 72 | if (regno < 0) |
| 73 | return NULL; |
| 74 | if (regno >= sizeof (register_names) / sizeof (*register_names)) |
| 75 | return NULL; |
| 76 | |
| 77 | return (register_names[regno]); |
| 78 | } |
| 79 | |
| 80 | static int |
| 81 | ns32k_register_byte_32082 (int regno) |
| 82 | { |
| 83 | if (regno >= NS32K_LP0_REGNUM) |
| 84 | return (NS32K_LP0_REGNUM * 4) + ((regno - NS32K_LP0_REGNUM) * 8); |
| 85 | |
| 86 | return (regno * 4); |
| 87 | } |
| 88 | |
| 89 | static int |
| 90 | ns32k_register_byte_32382 (int regno) |
| 91 | { |
| 92 | /* This is a bit yuk. The even numbered double precision floating |
| 93 | point long registers occupy the same space as the even:odd numbered |
| 94 | single precision floating point registers, but the extra 32381 FPU |
| 95 | registers are at the end. Doing it this way is compatible for both |
| 96 | 32081 and 32381 equipped machines. */ |
| 97 | |
| 98 | return ((regno < NS32K_LP0_REGNUM ? regno |
| 99 | : (regno - NS32K_LP0_REGNUM) & 1 ? regno - 1 |
| 100 | : (regno - NS32K_LP0_REGNUM + FP0_REGNUM)) * 4); |
| 101 | } |
| 102 | |
| 103 | static int |
| 104 | ns32k_register_raw_size (int regno) |
| 105 | { |
| 106 | /* All registers are 4 bytes, except for the doubled floating |
| 107 | registers. */ |
| 108 | |
| 109 | return ((regno >= NS32K_LP0_REGNUM) ? 8 : 4); |
| 110 | } |
| 111 | |
| 112 | static int |
| 113 | ns32k_register_virtual_size (int regno) |
| 114 | { |
| 115 | return ((regno >= NS32K_LP0_REGNUM) ? 8 : 4); |
| 116 | } |
| 117 | |
| 118 | static struct type * |
| 119 | ns32k_register_virtual_type (int regno) |
| 120 | { |
| 121 | if (regno < FP0_REGNUM) |
| 122 | return (builtin_type_int); |
| 123 | |
| 124 | if (regno < FP0_REGNUM + 8) |
| 125 | return (builtin_type_float); |
| 126 | |
| 127 | if (regno < NS32K_LP0_REGNUM) |
| 128 | return (builtin_type_int); |
| 129 | |
| 130 | return (builtin_type_double); |
| 131 | } |
| 132 | |
| 133 | /* Immediately after a function call, return the saved PC. Can't |
| 134 | always go through the frames for this because on some systems, |
| 135 | the new frame is not set up until the new function executes some |
| 136 | instructions. */ |
| 137 | |
| 138 | static CORE_ADDR |
| 139 | ns32k_saved_pc_after_call (struct frame_info *frame) |
| 140 | { |
| 141 | return (read_memory_integer (read_register (SP_REGNUM), 4)); |
| 142 | } |
| 143 | |
| 144 | /* Advance PC across any function entry prologue instructions |
| 145 | to reach some "real" code. */ |
| 146 | |
| 147 | static CORE_ADDR |
| 148 | umax_skip_prologue (CORE_ADDR pc) |
| 149 | { |
| 150 | unsigned char op = read_memory_integer (pc, 1); |
| 151 | if (op == 0x82) |
| 152 | { |
| 153 | op = read_memory_integer (pc + 2, 1); |
| 154 | if ((op & 0x80) == 0) |
| 155 | pc += 3; |
| 156 | else if ((op & 0xc0) == 0x80) |
| 157 | pc += 4; |
| 158 | else |
| 159 | pc += 6; |
| 160 | } |
| 161 | return pc; |
| 162 | } |
| 163 | \f |
| 164 | static const unsigned char * |
| 165 | ns32k_breakpoint_from_pc (CORE_ADDR *pcp, int *lenp) |
| 166 | { |
| 167 | static const unsigned char breakpoint_insn[] = { 0xf2 }; |
| 168 | |
| 169 | *lenp = sizeof (breakpoint_insn); |
| 170 | return breakpoint_insn; |
| 171 | } |
| 172 | |
| 173 | /* Return number of args passed to a frame. |
| 174 | Can return -1, meaning no way to tell. |
| 175 | Encore's C compiler often reuses same area on stack for args, |
| 176 | so this will often not work properly. If the arg names |
| 177 | are known, it's likely most of them will be printed. */ |
| 178 | |
| 179 | static int |
| 180 | umax_frame_num_args (struct frame_info *fi) |
| 181 | { |
| 182 | int numargs; |
| 183 | CORE_ADDR pc; |
| 184 | CORE_ADDR enter_addr; |
| 185 | unsigned int insn; |
| 186 | unsigned int addr_mode; |
| 187 | int width; |
| 188 | |
| 189 | numargs = -1; |
| 190 | enter_addr = ns32k_get_enter_addr (get_frame_pc (fi)); |
| 191 | if (enter_addr > 0) |
| 192 | { |
| 193 | pc = ((enter_addr == 1) |
| 194 | ? DEPRECATED_SAVED_PC_AFTER_CALL (fi) |
| 195 | : DEPRECATED_FRAME_SAVED_PC (fi)); |
| 196 | insn = read_memory_integer (pc, 2); |
| 197 | addr_mode = (insn >> 11) & 0x1f; |
| 198 | insn = insn & 0x7ff; |
| 199 | if ((insn & 0x7fc) == 0x57c |
| 200 | && addr_mode == 0x14) /* immediate */ |
| 201 | { |
| 202 | if (insn == 0x57c) /* adjspb */ |
| 203 | width = 1; |
| 204 | else if (insn == 0x57d) /* adjspw */ |
| 205 | width = 2; |
| 206 | else if (insn == 0x57f) /* adjspd */ |
| 207 | width = 4; |
| 208 | else |
| 209 | internal_error (__FILE__, __LINE__, "bad else"); |
| 210 | numargs = read_memory_integer (pc + 2, width); |
| 211 | if (width > 1) |
| 212 | flip_bytes (&numargs, width); |
| 213 | numargs = -sign_extend (numargs, width * 8) / 4; |
| 214 | } |
| 215 | } |
| 216 | return numargs; |
| 217 | } |
| 218 | |
| 219 | static int |
| 220 | sign_extend (int value, int bits) |
| 221 | { |
| 222 | value = value & ((1 << bits) - 1); |
| 223 | return (value & (1 << (bits - 1)) |
| 224 | ? value | (~((1 << bits) - 1)) |
| 225 | : value); |
| 226 | } |
| 227 | |
| 228 | static void |
| 229 | flip_bytes (void *p, int count) |
| 230 | { |
| 231 | char tmp; |
| 232 | char *ptr = 0; |
| 233 | |
| 234 | while (count > 0) |
| 235 | { |
| 236 | tmp = *ptr; |
| 237 | ptr[0] = ptr[count - 1]; |
| 238 | ptr[count - 1] = tmp; |
| 239 | ptr++; |
| 240 | count -= 2; |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | /* Return the number of locals in the current frame given a |
| 245 | pc pointing to the enter instruction. This is used by |
| 246 | ns32k_frame_init_saved_regs. */ |
| 247 | |
| 248 | static int |
| 249 | ns32k_localcount (CORE_ADDR enter_pc) |
| 250 | { |
| 251 | unsigned char localtype; |
| 252 | int localcount; |
| 253 | |
| 254 | localtype = read_memory_integer (enter_pc + 2, 1); |
| 255 | if ((localtype & 0x80) == 0) |
| 256 | localcount = localtype; |
| 257 | else if ((localtype & 0xc0) == 0x80) |
| 258 | localcount = (((localtype & 0x3f) << 8) |
| 259 | | (read_memory_integer (enter_pc + 3, 1) & 0xff)); |
| 260 | else |
| 261 | localcount = (((localtype & 0x3f) << 24) |
| 262 | | ((read_memory_integer (enter_pc + 3, 1) & 0xff) << 16) |
| 263 | | ((read_memory_integer (enter_pc + 4, 1) & 0xff) << 8) |
| 264 | | (read_memory_integer (enter_pc + 5, 1) & 0xff)); |
| 265 | return localcount; |
| 266 | } |
| 267 | |
| 268 | |
| 269 | /* Nonzero if instruction at PC is a return instruction. */ |
| 270 | |
| 271 | static int |
| 272 | ns32k_about_to_return (CORE_ADDR pc) |
| 273 | { |
| 274 | return (read_memory_integer (pc, 1) == 0x12); |
| 275 | } |
| 276 | |
| 277 | /* Get the address of the enter opcode for this function, if it is active. |
| 278 | Returns positive address > 1 if pc is between enter/exit, |
| 279 | 1 if pc before enter or after exit, 0 otherwise. */ |
| 280 | static CORE_ADDR |
| 281 | ns32k_get_enter_addr (CORE_ADDR pc) |
| 282 | { |
| 283 | CORE_ADDR enter_addr; |
| 284 | unsigned char op; |
| 285 | |
| 286 | if (pc == 0) |
| 287 | return 0; |
| 288 | |
| 289 | if (ns32k_about_to_return (pc)) |
| 290 | return 1; /* after exit */ |
| 291 | |
| 292 | enter_addr = get_pc_function_start (pc); |
| 293 | |
| 294 | if (pc == enter_addr) |
| 295 | return 1; /* before enter */ |
| 296 | |
| 297 | op = read_memory_integer (enter_addr, 1); |
| 298 | |
| 299 | if (op != 0x82) |
| 300 | return 0; /* function has no enter/exit */ |
| 301 | |
| 302 | return enter_addr; /* pc is between enter and exit */ |
| 303 | } |
| 304 | |
| 305 | static CORE_ADDR |
| 306 | ns32k_frame_chain (struct frame_info *frame) |
| 307 | { |
| 308 | /* In the case of the NS32000 series, the frame's nominal address is the |
| 309 | FP value, and that address is saved at the previous FP value as a |
| 310 | 4-byte word. */ |
| 311 | |
| 312 | if (deprecated_inside_entry_file (get_frame_pc (frame))) |
| 313 | return 0; |
| 314 | |
| 315 | return (read_memory_integer (get_frame_base (frame), 4)); |
| 316 | } |
| 317 | |
| 318 | |
| 319 | static CORE_ADDR |
| 320 | ns32k_sigtramp_saved_pc (struct frame_info *frame) |
| 321 | { |
| 322 | CORE_ADDR sigcontext_addr; |
| 323 | char *buf; |
| 324 | int ptrbytes = TYPE_LENGTH (builtin_type_void_func_ptr); |
| 325 | int sigcontext_offs = (2 * TARGET_INT_BIT) / TARGET_CHAR_BIT; |
| 326 | |
| 327 | buf = alloca (ptrbytes); |
| 328 | /* Get sigcontext address, it is the third parameter on the stack. */ |
| 329 | if (get_next_frame (frame)) |
| 330 | sigcontext_addr = read_memory_typed_address |
| 331 | (DEPRECATED_FRAME_ARGS_ADDRESS (get_next_frame (frame)) + FRAME_ARGS_SKIP + sigcontext_offs, |
| 332 | builtin_type_void_data_ptr); |
| 333 | else |
| 334 | sigcontext_addr = read_memory_typed_address |
| 335 | (read_register (SP_REGNUM) + sigcontext_offs, builtin_type_void_data_ptr); |
| 336 | |
| 337 | /* Don't cause a memory_error when accessing sigcontext in case the stack |
| 338 | layout has changed or the stack is corrupt. */ |
| 339 | target_read_memory (sigcontext_addr + SIGCONTEXT_PC_OFFSET, buf, ptrbytes); |
| 340 | return extract_typed_address (buf, builtin_type_void_func_ptr); |
| 341 | } |
| 342 | |
| 343 | static CORE_ADDR |
| 344 | ns32k_frame_saved_pc (struct frame_info *frame) |
| 345 | { |
| 346 | if ((get_frame_type (frame) == SIGTRAMP_FRAME)) |
| 347 | return (ns32k_sigtramp_saved_pc (frame)); /* XXXJRT */ |
| 348 | |
| 349 | return (read_memory_integer (get_frame_base (frame) + 4, 4)); |
| 350 | } |
| 351 | |
| 352 | static CORE_ADDR |
| 353 | ns32k_frame_args_address (struct frame_info *frame) |
| 354 | { |
| 355 | if (ns32k_get_enter_addr (get_frame_pc (frame)) > 1) |
| 356 | return (get_frame_base (frame)); |
| 357 | |
| 358 | return (read_register (SP_REGNUM) - 4); |
| 359 | } |
| 360 | |
| 361 | /* Code to initialize the addresses of the saved registers of frame described |
| 362 | by FRAME_INFO. This includes special registers such as pc and fp saved in |
| 363 | special ways in the stack frame. sp is even more special: the address we |
| 364 | return for it IS the sp for the next frame. */ |
| 365 | |
| 366 | static void |
| 367 | ns32k_frame_init_saved_regs (struct frame_info *frame) |
| 368 | { |
| 369 | int regmask, regnum; |
| 370 | int localcount; |
| 371 | CORE_ADDR enter_addr, next_addr; |
| 372 | |
| 373 | if (deprecated_get_frame_saved_regs (frame)) |
| 374 | return; |
| 375 | |
| 376 | frame_saved_regs_zalloc (frame); |
| 377 | |
| 378 | enter_addr = ns32k_get_enter_addr (get_frame_pc (frame)); |
| 379 | if (enter_addr > 1) |
| 380 | { |
| 381 | regmask = read_memory_integer (enter_addr + 1, 1) & 0xff; |
| 382 | localcount = ns32k_localcount (enter_addr); |
| 383 | next_addr = get_frame_base (frame) + localcount; |
| 384 | |
| 385 | for (regnum = 0; regnum < 8; regnum++) |
| 386 | { |
| 387 | if (regmask & (1 << regnum)) |
| 388 | deprecated_get_frame_saved_regs (frame)[regnum] = next_addr -= 4; |
| 389 | } |
| 390 | |
| 391 | deprecated_get_frame_saved_regs (frame)[SP_REGNUM] = get_frame_base (frame) + 4; |
| 392 | deprecated_get_frame_saved_regs (frame)[PC_REGNUM] = get_frame_base (frame) + 4; |
| 393 | deprecated_get_frame_saved_regs (frame)[DEPRECATED_FP_REGNUM] = read_memory_integer (get_frame_base (frame), 4); |
| 394 | } |
| 395 | else if (enter_addr == 1) |
| 396 | { |
| 397 | CORE_ADDR sp = read_register (SP_REGNUM); |
| 398 | deprecated_get_frame_saved_regs (frame)[PC_REGNUM] = sp; |
| 399 | deprecated_get_frame_saved_regs (frame)[SP_REGNUM] = sp + 4; |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | static void |
| 404 | ns32k_push_dummy_frame (void) |
| 405 | { |
| 406 | CORE_ADDR sp = read_register (SP_REGNUM); |
| 407 | int regnum; |
| 408 | |
| 409 | sp = push_word (sp, read_register (PC_REGNUM)); |
| 410 | sp = push_word (sp, read_register (DEPRECATED_FP_REGNUM)); |
| 411 | write_register (DEPRECATED_FP_REGNUM, sp); |
| 412 | |
| 413 | for (regnum = 0; regnum < 8; regnum++) |
| 414 | sp = push_word (sp, read_register (regnum)); |
| 415 | |
| 416 | write_register (SP_REGNUM, sp); |
| 417 | } |
| 418 | |
| 419 | static void |
| 420 | ns32k_pop_frame (void) |
| 421 | { |
| 422 | struct frame_info *frame = get_current_frame (); |
| 423 | CORE_ADDR fp; |
| 424 | int regnum; |
| 425 | |
| 426 | fp = get_frame_base (frame); |
| 427 | DEPRECATED_FRAME_INIT_SAVED_REGS (frame); |
| 428 | |
| 429 | for (regnum = 0; regnum < 8; regnum++) |
| 430 | if (deprecated_get_frame_saved_regs (frame)[regnum]) |
| 431 | write_register (regnum, |
| 432 | read_memory_integer (deprecated_get_frame_saved_regs (frame)[regnum], 4)); |
| 433 | |
| 434 | write_register (DEPRECATED_FP_REGNUM, read_memory_integer (fp, 4)); |
| 435 | write_register (PC_REGNUM, read_memory_integer (fp + 4, 4)); |
| 436 | write_register (SP_REGNUM, fp + 8); |
| 437 | flush_cached_frames (); |
| 438 | } |
| 439 | \f |
| 440 | /* The NS32000 call dummy sequence: |
| 441 | |
| 442 | enter 0xff,0 82 ff 00 |
| 443 | jsr @0x00010203 7f ae c0 01 02 03 |
| 444 | adjspd 0x69696969 7f a5 01 02 03 04 |
| 445 | bpt f2 |
| 446 | |
| 447 | It is 16 bytes long. */ |
| 448 | |
| 449 | static LONGEST ns32k_call_dummy_words[] = |
| 450 | { |
| 451 | 0x7f00ff82, |
| 452 | 0x0201c0ae, |
| 453 | 0x01a57f03, |
| 454 | 0xf2040302 |
| 455 | }; |
| 456 | static int sizeof_ns32k_call_dummy_words = sizeof (ns32k_call_dummy_words); |
| 457 | |
| 458 | #define NS32K_CALL_DUMMY_ADDR 5 |
| 459 | #define NS32K_CALL_DUMMY_NARGS 11 |
| 460 | |
| 461 | static void |
| 462 | ns32k_fix_call_dummy (char *dummy, CORE_ADDR pc, CORE_ADDR fun, int nargs, |
| 463 | struct value **args, struct type *type, int gcc_p) |
| 464 | { |
| 465 | int flipped; |
| 466 | |
| 467 | flipped = fun | 0xc0000000; |
| 468 | flip_bytes (&flipped, 4); |
| 469 | store_unsigned_integer (dummy + NS32K_CALL_DUMMY_ADDR, 4, flipped); |
| 470 | |
| 471 | flipped = - nargs * 4; |
| 472 | flip_bytes (&flipped, 4); |
| 473 | store_unsigned_integer (dummy + NS32K_CALL_DUMMY_NARGS, 4, flipped); |
| 474 | } |
| 475 | \f |
| 476 | static void |
| 477 | ns32k_store_struct_return (CORE_ADDR addr, CORE_ADDR sp) |
| 478 | { |
| 479 | /* On this machine, this is a no-op (Encore Umax didn't use GCC). */ |
| 480 | } |
| 481 | |
| 482 | static void |
| 483 | ns32k_extract_return_value (struct type *valtype, char *regbuf, char *valbuf) |
| 484 | { |
| 485 | memcpy (valbuf, |
| 486 | regbuf + DEPRECATED_REGISTER_BYTE (TYPE_CODE (valtype) == TYPE_CODE_FLT ? |
| 487 | FP0_REGNUM : 0), TYPE_LENGTH (valtype)); |
| 488 | } |
| 489 | |
| 490 | static void |
| 491 | ns32k_store_return_value (struct type *valtype, char *valbuf) |
| 492 | { |
| 493 | deprecated_write_register_bytes (TYPE_CODE (valtype) == TYPE_CODE_FLT |
| 494 | ? FP0_REGNUM : 0, valbuf, |
| 495 | TYPE_LENGTH (valtype)); |
| 496 | } |
| 497 | |
| 498 | static CORE_ADDR |
| 499 | ns32k_extract_struct_value_address (char *regbuf) |
| 500 | { |
| 501 | return (extract_unsigned_integer (regbuf + DEPRECATED_REGISTER_BYTE (0), DEPRECATED_REGISTER_RAW_SIZE (0))); |
| 502 | } |
| 503 | \f |
| 504 | void |
| 505 | ns32k_gdbarch_init_32082 (struct gdbarch *gdbarch) |
| 506 | { |
| 507 | set_gdbarch_num_regs (gdbarch, NS32K_NUM_REGS_32082); |
| 508 | |
| 509 | set_gdbarch_register_name (gdbarch, ns32k_register_name_32082); |
| 510 | set_gdbarch_deprecated_register_bytes (gdbarch, NS32K_REGISTER_BYTES_32082); |
| 511 | set_gdbarch_deprecated_register_byte (gdbarch, ns32k_register_byte_32082); |
| 512 | } |
| 513 | |
| 514 | void |
| 515 | ns32k_gdbarch_init_32382 (struct gdbarch *gdbarch) |
| 516 | { |
| 517 | set_gdbarch_num_regs (gdbarch, NS32K_NUM_REGS_32382); |
| 518 | |
| 519 | set_gdbarch_register_name (gdbarch, ns32k_register_name_32382); |
| 520 | set_gdbarch_deprecated_register_bytes (gdbarch, NS32K_REGISTER_BYTES_32382); |
| 521 | set_gdbarch_deprecated_register_byte (gdbarch, ns32k_register_byte_32382); |
| 522 | } |
| 523 | |
| 524 | /* Initialize the current architecture based on INFO. If possible, re-use an |
| 525 | architecture from ARCHES, which is a list of architectures already created |
| 526 | during this debugging session. |
| 527 | |
| 528 | Called e.g. at program startup, when reading a core file, and when reading |
| 529 | a binary file. */ |
| 530 | |
| 531 | static struct gdbarch * |
| 532 | ns32k_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
| 533 | { |
| 534 | struct gdbarch *gdbarch; |
| 535 | |
| 536 | /* If there is already a candidate, use it. */ |
| 537 | arches = gdbarch_list_lookup_by_info (arches, &info); |
| 538 | if (arches != NULL) |
| 539 | return arches->gdbarch; |
| 540 | |
| 541 | gdbarch = gdbarch_alloc (&info, NULL); |
| 542 | |
| 543 | /* NOTE: cagney/2002-12-06: This can be deleted when this arch is |
| 544 | ready to unwind the PC first (see frame.c:get_prev_frame()). */ |
| 545 | set_gdbarch_deprecated_init_frame_pc (gdbarch, deprecated_init_frame_pc_default); |
| 546 | |
| 547 | /* Register info */ |
| 548 | ns32k_gdbarch_init_32082 (gdbarch); |
| 549 | set_gdbarch_num_regs (gdbarch, NS32K_SP_REGNUM); |
| 550 | set_gdbarch_num_regs (gdbarch, NS32K_FP_REGNUM); |
| 551 | set_gdbarch_num_regs (gdbarch, NS32K_PC_REGNUM); |
| 552 | set_gdbarch_num_regs (gdbarch, NS32K_PS_REGNUM); |
| 553 | |
| 554 | set_gdbarch_deprecated_register_size (gdbarch, NS32K_REGISTER_SIZE); |
| 555 | set_gdbarch_deprecated_register_raw_size (gdbarch, ns32k_register_raw_size); |
| 556 | set_gdbarch_deprecated_max_register_raw_size (gdbarch, NS32K_MAX_REGISTER_RAW_SIZE); |
| 557 | set_gdbarch_deprecated_register_virtual_size (gdbarch, ns32k_register_virtual_size); |
| 558 | set_gdbarch_deprecated_max_register_virtual_size (gdbarch, |
| 559 | NS32K_MAX_REGISTER_VIRTUAL_SIZE); |
| 560 | set_gdbarch_deprecated_register_virtual_type (gdbarch, ns32k_register_virtual_type); |
| 561 | |
| 562 | /* Frame and stack info */ |
| 563 | set_gdbarch_skip_prologue (gdbarch, umax_skip_prologue); |
| 564 | set_gdbarch_deprecated_saved_pc_after_call (gdbarch, ns32k_saved_pc_after_call); |
| 565 | |
| 566 | set_gdbarch_frame_num_args (gdbarch, umax_frame_num_args); |
| 567 | set_gdbarch_frameless_function_invocation (gdbarch, |
| 568 | generic_frameless_function_invocation_not); |
| 569 | |
| 570 | set_gdbarch_deprecated_frame_chain (gdbarch, ns32k_frame_chain); |
| 571 | set_gdbarch_deprecated_frame_saved_pc (gdbarch, ns32k_frame_saved_pc); |
| 572 | |
| 573 | set_gdbarch_deprecated_frame_args_address (gdbarch, ns32k_frame_args_address); |
| 574 | |
| 575 | set_gdbarch_deprecated_frame_init_saved_regs (gdbarch, ns32k_frame_init_saved_regs); |
| 576 | |
| 577 | set_gdbarch_frame_args_skip (gdbarch, 8); |
| 578 | |
| 579 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
| 580 | |
| 581 | /* Return value info */ |
| 582 | set_gdbarch_deprecated_store_struct_return (gdbarch, ns32k_store_struct_return); |
| 583 | set_gdbarch_deprecated_extract_return_value (gdbarch, ns32k_extract_return_value); |
| 584 | set_gdbarch_deprecated_store_return_value (gdbarch, ns32k_store_return_value); |
| 585 | set_gdbarch_deprecated_extract_struct_value_address (gdbarch, |
| 586 | ns32k_extract_struct_value_address); |
| 587 | |
| 588 | /* Call dummy info */ |
| 589 | set_gdbarch_deprecated_push_dummy_frame (gdbarch, ns32k_push_dummy_frame); |
| 590 | set_gdbarch_deprecated_pop_frame (gdbarch, ns32k_pop_frame); |
| 591 | set_gdbarch_call_dummy_location (gdbarch, ON_STACK); |
| 592 | set_gdbarch_deprecated_call_dummy_words (gdbarch, ns32k_call_dummy_words); |
| 593 | set_gdbarch_deprecated_sizeof_call_dummy_words (gdbarch, sizeof_ns32k_call_dummy_words); |
| 594 | set_gdbarch_deprecated_fix_call_dummy (gdbarch, ns32k_fix_call_dummy); |
| 595 | set_gdbarch_deprecated_call_dummy_start_offset (gdbarch, 3); |
| 596 | set_gdbarch_deprecated_call_dummy_breakpoint_offset (gdbarch, 15); |
| 597 | set_gdbarch_deprecated_use_generic_dummy_frames (gdbarch, 0); |
| 598 | set_gdbarch_deprecated_pc_in_call_dummy (gdbarch, deprecated_pc_in_call_dummy_on_stack); |
| 599 | |
| 600 | /* Breakpoint info */ |
| 601 | set_gdbarch_decr_pc_after_break (gdbarch, 0); |
| 602 | set_gdbarch_breakpoint_from_pc (gdbarch, ns32k_breakpoint_from_pc); |
| 603 | |
| 604 | /* Misc info */ |
| 605 | set_gdbarch_function_start_offset (gdbarch, 0); |
| 606 | |
| 607 | /* Should be using push_dummy_call. */ |
| 608 | set_gdbarch_deprecated_dummy_write_sp (gdbarch, deprecated_write_sp); |
| 609 | |
| 610 | set_gdbarch_print_insn (gdbarch, print_insn_ns32k); |
| 611 | |
| 612 | /* Hook in OS ABI-specific overrides, if they have been registered. */ |
| 613 | gdbarch_init_osabi (info, gdbarch); |
| 614 | |
| 615 | return (gdbarch); |
| 616 | } |
| 617 | |
| 618 | extern initialize_file_ftype _initialize_ns32k_tdep; /* -Wmissing-prototypes */ |
| 619 | |
| 620 | void |
| 621 | _initialize_ns32k_tdep (void) |
| 622 | { |
| 623 | gdbarch_register (bfd_arch_ns32k, ns32k_gdbarch_init, NULL); |
| 624 | |
| 625 | } |