| 1 | /* Target-dependent code for Mitsubishi D10V, for GDB. |
| 2 | |
| 3 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software |
| 4 | Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* Contributed by Martin Hunt, hunt@cygnus.com */ |
| 24 | |
| 25 | #include "defs.h" |
| 26 | #include "frame.h" |
| 27 | #include "frame-unwind.h" |
| 28 | #include "frame-base.h" |
| 29 | #include "symtab.h" |
| 30 | #include "gdbtypes.h" |
| 31 | #include "gdbcmd.h" |
| 32 | #include "gdbcore.h" |
| 33 | #include "gdb_string.h" |
| 34 | #include "value.h" |
| 35 | #include "inferior.h" |
| 36 | #include "dis-asm.h" |
| 37 | #include "symfile.h" |
| 38 | #include "objfiles.h" |
| 39 | #include "language.h" |
| 40 | #include "arch-utils.h" |
| 41 | #include "regcache.h" |
| 42 | #include "remote.h" |
| 43 | #include "floatformat.h" |
| 44 | #include "gdb/sim-d10v.h" |
| 45 | #include "sim-regno.h" |
| 46 | |
| 47 | #include "gdb_assert.h" |
| 48 | |
| 49 | struct gdbarch_tdep |
| 50 | { |
| 51 | int a0_regnum; |
| 52 | int nr_dmap_regs; |
| 53 | unsigned long (*dmap_register) (int nr); |
| 54 | unsigned long (*imap_register) (int nr); |
| 55 | }; |
| 56 | |
| 57 | /* These are the addresses the D10V-EVA board maps data and |
| 58 | instruction memory to. */ |
| 59 | |
| 60 | enum memspace { |
| 61 | DMEM_START = 0x2000000, |
| 62 | IMEM_START = 0x1000000, |
| 63 | STACK_START = 0x200bffe |
| 64 | }; |
| 65 | |
| 66 | /* d10v register names. */ |
| 67 | |
| 68 | enum |
| 69 | { |
| 70 | R0_REGNUM = 0, |
| 71 | R3_REGNUM = 3, |
| 72 | D10V_FP_REGNUM = 11, |
| 73 | LR_REGNUM = 13, |
| 74 | D10V_SP_REGNUM = 15, |
| 75 | PSW_REGNUM = 16, |
| 76 | _PC_REGNUM = 18, |
| 77 | NR_IMAP_REGS = 2, |
| 78 | NR_A_REGS = 2, |
| 79 | TS2_NUM_REGS = 37, |
| 80 | TS3_NUM_REGS = 42, |
| 81 | /* d10v calling convention. */ |
| 82 | ARG1_REGNUM = R0_REGNUM, |
| 83 | ARGN_REGNUM = R3_REGNUM, |
| 84 | RET1_REGNUM = R0_REGNUM, |
| 85 | }; |
| 86 | |
| 87 | int |
| 88 | nr_dmap_regs (struct gdbarch *gdbarch) |
| 89 | { |
| 90 | return gdbarch_tdep (gdbarch)->nr_dmap_regs; |
| 91 | } |
| 92 | |
| 93 | int |
| 94 | a0_regnum (struct gdbarch *gdbarch) |
| 95 | { |
| 96 | return gdbarch_tdep (gdbarch)->a0_regnum; |
| 97 | } |
| 98 | |
| 99 | /* Local functions */ |
| 100 | |
| 101 | extern void _initialize_d10v_tdep (void); |
| 102 | |
| 103 | static CORE_ADDR d10v_read_sp (void); |
| 104 | |
| 105 | static void d10v_eva_prepare_to_trace (void); |
| 106 | |
| 107 | static void d10v_eva_get_trace_data (void); |
| 108 | |
| 109 | static CORE_ADDR |
| 110 | d10v_frame_align (struct gdbarch *gdbarch, CORE_ADDR sp) |
| 111 | { |
| 112 | /* Align to the size of an instruction (so that they can safely be |
| 113 | pushed onto the stack. */ |
| 114 | return sp & ~3; |
| 115 | } |
| 116 | |
| 117 | /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of |
| 118 | EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc |
| 119 | and TYPE is the type (which is known to be struct, union or array). |
| 120 | |
| 121 | The d10v returns anything less than 8 bytes in size in |
| 122 | registers. */ |
| 123 | |
| 124 | static int |
| 125 | d10v_use_struct_convention (int gcc_p, struct type *type) |
| 126 | { |
| 127 | long alignment; |
| 128 | int i; |
| 129 | /* The d10v only passes a struct in a register when that structure |
| 130 | has an alignment that matches the size of a register. */ |
| 131 | /* If the structure doesn't fit in 4 registers, put it on the |
| 132 | stack. */ |
| 133 | if (TYPE_LENGTH (type) > 8) |
| 134 | return 1; |
| 135 | /* If the struct contains only one field, don't put it on the stack |
| 136 | - gcc can fit it in one or more registers. */ |
| 137 | if (TYPE_NFIELDS (type) == 1) |
| 138 | return 0; |
| 139 | alignment = TYPE_LENGTH (TYPE_FIELD_TYPE (type, 0)); |
| 140 | for (i = 1; i < TYPE_NFIELDS (type); i++) |
| 141 | { |
| 142 | /* If the alignment changes, just assume it goes on the |
| 143 | stack. */ |
| 144 | if (TYPE_LENGTH (TYPE_FIELD_TYPE (type, i)) != alignment) |
| 145 | return 1; |
| 146 | } |
| 147 | /* If the alignment is suitable for the d10v's 16 bit registers, |
| 148 | don't put it on the stack. */ |
| 149 | if (alignment == 2 || alignment == 4) |
| 150 | return 0; |
| 151 | return 1; |
| 152 | } |
| 153 | |
| 154 | |
| 155 | static const unsigned char * |
| 156 | d10v_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr) |
| 157 | { |
| 158 | static unsigned char breakpoint[] = |
| 159 | {0x2f, 0x90, 0x5e, 0x00}; |
| 160 | *lenptr = sizeof (breakpoint); |
| 161 | return breakpoint; |
| 162 | } |
| 163 | |
| 164 | /* Map the REG_NR onto an ascii name. Return NULL or an empty string |
| 165 | when the reg_nr isn't valid. */ |
| 166 | |
| 167 | enum ts2_regnums |
| 168 | { |
| 169 | TS2_IMAP0_REGNUM = 32, |
| 170 | TS2_DMAP_REGNUM = 34, |
| 171 | TS2_NR_DMAP_REGS = 1, |
| 172 | TS2_A0_REGNUM = 35 |
| 173 | }; |
| 174 | |
| 175 | static const char * |
| 176 | d10v_ts2_register_name (int reg_nr) |
| 177 | { |
| 178 | static char *register_names[] = |
| 179 | { |
| 180 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 181 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 182 | "psw", "bpsw", "pc", "bpc", "cr4", "cr5", "cr6", "rpt_c", |
| 183 | "rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15", |
| 184 | "imap0", "imap1", "dmap", "a0", "a1" |
| 185 | }; |
| 186 | if (reg_nr < 0) |
| 187 | return NULL; |
| 188 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 189 | return NULL; |
| 190 | return register_names[reg_nr]; |
| 191 | } |
| 192 | |
| 193 | enum ts3_regnums |
| 194 | { |
| 195 | TS3_IMAP0_REGNUM = 36, |
| 196 | TS3_DMAP0_REGNUM = 38, |
| 197 | TS3_NR_DMAP_REGS = 4, |
| 198 | TS3_A0_REGNUM = 32 |
| 199 | }; |
| 200 | |
| 201 | static const char * |
| 202 | d10v_ts3_register_name (int reg_nr) |
| 203 | { |
| 204 | static char *register_names[] = |
| 205 | { |
| 206 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 207 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 208 | "psw", "bpsw", "pc", "bpc", "cr4", "cr5", "cr6", "rpt_c", |
| 209 | "rpt_s", "rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15", |
| 210 | "a0", "a1", |
| 211 | "spi", "spu", |
| 212 | "imap0", "imap1", |
| 213 | "dmap0", "dmap1", "dmap2", "dmap3" |
| 214 | }; |
| 215 | if (reg_nr < 0) |
| 216 | return NULL; |
| 217 | if (reg_nr >= (sizeof (register_names) / sizeof (*register_names))) |
| 218 | return NULL; |
| 219 | return register_names[reg_nr]; |
| 220 | } |
| 221 | |
| 222 | /* Access the DMAP/IMAP registers in a target independent way. |
| 223 | |
| 224 | Divide the D10V's 64k data space into four 16k segments: |
| 225 | 0x0000 -- 0x3fff, 0x4000 -- 0x7fff, 0x8000 -- 0xbfff, and |
| 226 | 0xc000 -- 0xffff. |
| 227 | |
| 228 | On the TS2, the first two segments (0x0000 -- 0x3fff, 0x4000 -- |
| 229 | 0x7fff) always map to the on-chip data RAM, and the fourth always |
| 230 | maps to I/O space. The third (0x8000 - 0xbfff) can be mapped into |
| 231 | unified memory or instruction memory, under the control of the |
| 232 | single DMAP register. |
| 233 | |
| 234 | On the TS3, there are four DMAP registers, each of which controls |
| 235 | one of the segments. */ |
| 236 | |
| 237 | static unsigned long |
| 238 | d10v_ts2_dmap_register (int reg_nr) |
| 239 | { |
| 240 | switch (reg_nr) |
| 241 | { |
| 242 | case 0: |
| 243 | case 1: |
| 244 | return 0x2000; |
| 245 | case 2: |
| 246 | return read_register (TS2_DMAP_REGNUM); |
| 247 | default: |
| 248 | return 0; |
| 249 | } |
| 250 | } |
| 251 | |
| 252 | static unsigned long |
| 253 | d10v_ts3_dmap_register (int reg_nr) |
| 254 | { |
| 255 | return read_register (TS3_DMAP0_REGNUM + reg_nr); |
| 256 | } |
| 257 | |
| 258 | static unsigned long |
| 259 | d10v_dmap_register (int reg_nr) |
| 260 | { |
| 261 | return gdbarch_tdep (current_gdbarch)->dmap_register (reg_nr); |
| 262 | } |
| 263 | |
| 264 | static unsigned long |
| 265 | d10v_ts2_imap_register (int reg_nr) |
| 266 | { |
| 267 | return read_register (TS2_IMAP0_REGNUM + reg_nr); |
| 268 | } |
| 269 | |
| 270 | static unsigned long |
| 271 | d10v_ts3_imap_register (int reg_nr) |
| 272 | { |
| 273 | return read_register (TS3_IMAP0_REGNUM + reg_nr); |
| 274 | } |
| 275 | |
| 276 | static unsigned long |
| 277 | d10v_imap_register (int reg_nr) |
| 278 | { |
| 279 | return gdbarch_tdep (current_gdbarch)->imap_register (reg_nr); |
| 280 | } |
| 281 | |
| 282 | /* MAP GDB's internal register numbering (determined by the layout fo |
| 283 | the REGISTER_BYTE array) onto the simulator's register |
| 284 | numbering. */ |
| 285 | |
| 286 | static int |
| 287 | d10v_ts2_register_sim_regno (int nr) |
| 288 | { |
| 289 | /* Only makes sense to supply raw registers. */ |
| 290 | gdb_assert (nr >= 0 && nr < NUM_REGS); |
| 291 | if (nr >= TS2_IMAP0_REGNUM |
| 292 | && nr < TS2_IMAP0_REGNUM + NR_IMAP_REGS) |
| 293 | return nr - TS2_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM; |
| 294 | if (nr == TS2_DMAP_REGNUM) |
| 295 | return nr - TS2_DMAP_REGNUM + SIM_D10V_TS2_DMAP_REGNUM; |
| 296 | if (nr >= TS2_A0_REGNUM |
| 297 | && nr < TS2_A0_REGNUM + NR_A_REGS) |
| 298 | return nr - TS2_A0_REGNUM + SIM_D10V_A0_REGNUM; |
| 299 | return nr; |
| 300 | } |
| 301 | |
| 302 | static int |
| 303 | d10v_ts3_register_sim_regno (int nr) |
| 304 | { |
| 305 | /* Only makes sense to supply raw registers. */ |
| 306 | gdb_assert (nr >= 0 && nr < NUM_REGS); |
| 307 | if (nr >= TS3_IMAP0_REGNUM |
| 308 | && nr < TS3_IMAP0_REGNUM + NR_IMAP_REGS) |
| 309 | return nr - TS3_IMAP0_REGNUM + SIM_D10V_IMAP0_REGNUM; |
| 310 | if (nr >= TS3_DMAP0_REGNUM |
| 311 | && nr < TS3_DMAP0_REGNUM + TS3_NR_DMAP_REGS) |
| 312 | return nr - TS3_DMAP0_REGNUM + SIM_D10V_DMAP0_REGNUM; |
| 313 | if (nr >= TS3_A0_REGNUM |
| 314 | && nr < TS3_A0_REGNUM + NR_A_REGS) |
| 315 | return nr - TS3_A0_REGNUM + SIM_D10V_A0_REGNUM; |
| 316 | return nr; |
| 317 | } |
| 318 | |
| 319 | /* Return the GDB type object for the "standard" data type |
| 320 | of data in register N. */ |
| 321 | |
| 322 | static struct type * |
| 323 | d10v_register_type (struct gdbarch *gdbarch, int reg_nr) |
| 324 | { |
| 325 | if (reg_nr == PC_REGNUM) |
| 326 | return builtin_type_void_func_ptr; |
| 327 | if (reg_nr == D10V_SP_REGNUM || reg_nr == D10V_FP_REGNUM) |
| 328 | return builtin_type_void_data_ptr; |
| 329 | else if (reg_nr >= a0_regnum (gdbarch) |
| 330 | && reg_nr < (a0_regnum (gdbarch) + NR_A_REGS)) |
| 331 | return builtin_type_int64; |
| 332 | else |
| 333 | return builtin_type_int16; |
| 334 | } |
| 335 | |
| 336 | static int |
| 337 | d10v_daddr_p (CORE_ADDR x) |
| 338 | { |
| 339 | return (((x) & 0x3000000) == DMEM_START); |
| 340 | } |
| 341 | |
| 342 | static int |
| 343 | d10v_iaddr_p (CORE_ADDR x) |
| 344 | { |
| 345 | return (((x) & 0x3000000) == IMEM_START); |
| 346 | } |
| 347 | |
| 348 | static CORE_ADDR |
| 349 | d10v_make_daddr (CORE_ADDR x) |
| 350 | { |
| 351 | return ((x) | DMEM_START); |
| 352 | } |
| 353 | |
| 354 | static CORE_ADDR |
| 355 | d10v_make_iaddr (CORE_ADDR x) |
| 356 | { |
| 357 | if (d10v_iaddr_p (x)) |
| 358 | return x; /* Idempotency -- x is already in the IMEM space. */ |
| 359 | else |
| 360 | return (((x) << 2) | IMEM_START); |
| 361 | } |
| 362 | |
| 363 | static CORE_ADDR |
| 364 | d10v_convert_iaddr_to_raw (CORE_ADDR x) |
| 365 | { |
| 366 | return (((x) >> 2) & 0xffff); |
| 367 | } |
| 368 | |
| 369 | static CORE_ADDR |
| 370 | d10v_convert_daddr_to_raw (CORE_ADDR x) |
| 371 | { |
| 372 | return ((x) & 0xffff); |
| 373 | } |
| 374 | |
| 375 | static void |
| 376 | d10v_address_to_pointer (struct type *type, void *buf, CORE_ADDR addr) |
| 377 | { |
| 378 | /* Is it a code address? */ |
| 379 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC |
| 380 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD) |
| 381 | { |
| 382 | store_unsigned_integer (buf, TYPE_LENGTH (type), |
| 383 | d10v_convert_iaddr_to_raw (addr)); |
| 384 | } |
| 385 | else |
| 386 | { |
| 387 | /* Strip off any upper segment bits. */ |
| 388 | store_unsigned_integer (buf, TYPE_LENGTH (type), |
| 389 | d10v_convert_daddr_to_raw (addr)); |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | static CORE_ADDR |
| 394 | d10v_pointer_to_address (struct type *type, const void *buf) |
| 395 | { |
| 396 | CORE_ADDR addr = extract_unsigned_integer (buf, TYPE_LENGTH (type)); |
| 397 | /* Is it a code address? */ |
| 398 | if (TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_FUNC |
| 399 | || TYPE_CODE (TYPE_TARGET_TYPE (type)) == TYPE_CODE_METHOD |
| 400 | || TYPE_CODE_SPACE (TYPE_TARGET_TYPE (type))) |
| 401 | return d10v_make_iaddr (addr); |
| 402 | else |
| 403 | return d10v_make_daddr (addr); |
| 404 | } |
| 405 | |
| 406 | /* Don't do anything if we have an integer, this way users can type 'x |
| 407 | <addr>' w/o having gdb outsmart them. The internal gdb conversions |
| 408 | to the correct space are taken care of in the pointer_to_address |
| 409 | function. If we don't do this, 'x $fp' wouldn't work. */ |
| 410 | static CORE_ADDR |
| 411 | d10v_integer_to_address (struct type *type, void *buf) |
| 412 | { |
| 413 | LONGEST val; |
| 414 | val = unpack_long (type, buf); |
| 415 | return val; |
| 416 | } |
| 417 | |
| 418 | /* Write into appropriate registers a function return value |
| 419 | of type TYPE, given in virtual format. |
| 420 | |
| 421 | Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */ |
| 422 | |
| 423 | static void |
| 424 | d10v_store_return_value (struct type *type, struct regcache *regcache, |
| 425 | const void *valbuf) |
| 426 | { |
| 427 | /* Only char return values need to be shifted right within the first |
| 428 | regnum. */ |
| 429 | if (TYPE_LENGTH (type) == 1 |
| 430 | && TYPE_CODE (type) == TYPE_CODE_INT) |
| 431 | { |
| 432 | bfd_byte tmp[2]; |
| 433 | tmp[1] = *(bfd_byte *)valbuf; |
| 434 | regcache_cooked_write (regcache, RET1_REGNUM, tmp); |
| 435 | } |
| 436 | else |
| 437 | { |
| 438 | int reg; |
| 439 | /* A structure is never more than 8 bytes long. See |
| 440 | use_struct_convention(). */ |
| 441 | gdb_assert (TYPE_LENGTH (type) <= 8); |
| 442 | /* Write out most registers, stop loop before trying to write |
| 443 | out any dangling byte at the end of the buffer. */ |
| 444 | for (reg = 0; (reg * 2) + 1 < TYPE_LENGTH (type); reg++) |
| 445 | { |
| 446 | regcache_cooked_write (regcache, RET1_REGNUM + reg, |
| 447 | (bfd_byte *) valbuf + reg * 2); |
| 448 | } |
| 449 | /* Write out any dangling byte at the end of the buffer. */ |
| 450 | if ((reg * 2) + 1 == TYPE_LENGTH (type)) |
| 451 | regcache_cooked_write_part (regcache, reg, 0, 1, |
| 452 | (bfd_byte *) valbuf + reg * 2); |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | /* Extract from an array REGBUF containing the (raw) register state |
| 457 | the address in which a function should return its structure value, |
| 458 | as a CORE_ADDR (or an expression that can be used as one). */ |
| 459 | |
| 460 | static CORE_ADDR |
| 461 | d10v_extract_struct_value_address (struct regcache *regcache) |
| 462 | { |
| 463 | ULONGEST addr; |
| 464 | regcache_cooked_read_unsigned (regcache, ARG1_REGNUM, &addr); |
| 465 | return (addr | DMEM_START); |
| 466 | } |
| 467 | |
| 468 | static int |
| 469 | check_prologue (unsigned short op) |
| 470 | { |
| 471 | /* st rn, @-sp */ |
| 472 | if ((op & 0x7E1F) == 0x6C1F) |
| 473 | return 1; |
| 474 | |
| 475 | /* st2w rn, @-sp */ |
| 476 | if ((op & 0x7E3F) == 0x6E1F) |
| 477 | return 1; |
| 478 | |
| 479 | /* subi sp, n */ |
| 480 | if ((op & 0x7FE1) == 0x01E1) |
| 481 | return 1; |
| 482 | |
| 483 | /* mv r11, sp */ |
| 484 | if (op == 0x417E) |
| 485 | return 1; |
| 486 | |
| 487 | /* nop */ |
| 488 | if (op == 0x5E00) |
| 489 | return 1; |
| 490 | |
| 491 | /* st rn, @sp */ |
| 492 | if ((op & 0x7E1F) == 0x681E) |
| 493 | return 1; |
| 494 | |
| 495 | /* st2w rn, @sp */ |
| 496 | if ((op & 0x7E3F) == 0x3A1E) |
| 497 | return 1; |
| 498 | |
| 499 | return 0; |
| 500 | } |
| 501 | |
| 502 | static CORE_ADDR |
| 503 | d10v_skip_prologue (CORE_ADDR pc) |
| 504 | { |
| 505 | unsigned long op; |
| 506 | unsigned short op1, op2; |
| 507 | CORE_ADDR func_addr, func_end; |
| 508 | struct symtab_and_line sal; |
| 509 | |
| 510 | /* If we have line debugging information, then the end of the */ |
| 511 | /* prologue should the first assembly instruction of the first source line */ |
| 512 | if (find_pc_partial_function (pc, NULL, &func_addr, &func_end)) |
| 513 | { |
| 514 | sal = find_pc_line (func_addr, 0); |
| 515 | if (sal.end && sal.end < func_end) |
| 516 | return sal.end; |
| 517 | } |
| 518 | |
| 519 | if (target_read_memory (pc, (char *) &op, 4)) |
| 520 | return pc; /* Can't access it -- assume no prologue. */ |
| 521 | |
| 522 | while (1) |
| 523 | { |
| 524 | op = (unsigned long) read_memory_integer (pc, 4); |
| 525 | if ((op & 0xC0000000) == 0xC0000000) |
| 526 | { |
| 527 | /* long instruction */ |
| 528 | if (((op & 0x3FFF0000) != 0x01FF0000) && /* add3 sp,sp,n */ |
| 529 | ((op & 0x3F0F0000) != 0x340F0000) && /* st rn, @(offset,sp) */ |
| 530 | ((op & 0x3F1F0000) != 0x350F0000)) /* st2w rn, @(offset,sp) */ |
| 531 | break; |
| 532 | } |
| 533 | else |
| 534 | { |
| 535 | /* short instructions */ |
| 536 | if ((op & 0xC0000000) == 0x80000000) |
| 537 | { |
| 538 | op2 = (op & 0x3FFF8000) >> 15; |
| 539 | op1 = op & 0x7FFF; |
| 540 | } |
| 541 | else |
| 542 | { |
| 543 | op1 = (op & 0x3FFF8000) >> 15; |
| 544 | op2 = op & 0x7FFF; |
| 545 | } |
| 546 | if (check_prologue (op1)) |
| 547 | { |
| 548 | if (!check_prologue (op2)) |
| 549 | { |
| 550 | /* if the previous opcode was really part of the prologue */ |
| 551 | /* and not just a NOP, then we want to break after both instructions */ |
| 552 | if (op1 != 0x5E00) |
| 553 | pc += 4; |
| 554 | break; |
| 555 | } |
| 556 | } |
| 557 | else |
| 558 | break; |
| 559 | } |
| 560 | pc += 4; |
| 561 | } |
| 562 | return pc; |
| 563 | } |
| 564 | |
| 565 | struct d10v_unwind_cache |
| 566 | { |
| 567 | CORE_ADDR return_pc; |
| 568 | /* The previous frame's inner most stack address. Used as this |
| 569 | frame ID's stack_addr. */ |
| 570 | CORE_ADDR prev_sp; |
| 571 | /* The frame's base, optionally used by the high-level debug info. */ |
| 572 | CORE_ADDR base; |
| 573 | int size; |
| 574 | CORE_ADDR *saved_regs; |
| 575 | /* How far the SP and r11 (FP) have been offset from the start of |
| 576 | the stack frame (as defined by the previous frame's stack |
| 577 | pointer). */ |
| 578 | LONGEST sp_offset; |
| 579 | LONGEST r11_offset; |
| 580 | int uses_frame; |
| 581 | void **regs; |
| 582 | }; |
| 583 | |
| 584 | static int |
| 585 | prologue_find_regs (struct d10v_unwind_cache *info, unsigned short op, |
| 586 | CORE_ADDR addr) |
| 587 | { |
| 588 | int n; |
| 589 | |
| 590 | /* st rn, @-sp */ |
| 591 | if ((op & 0x7E1F) == 0x6C1F) |
| 592 | { |
| 593 | n = (op & 0x1E0) >> 5; |
| 594 | info->sp_offset -= 2; |
| 595 | info->saved_regs[n] = info->sp_offset; |
| 596 | return 1; |
| 597 | } |
| 598 | |
| 599 | /* st2w rn, @-sp */ |
| 600 | else if ((op & 0x7E3F) == 0x6E1F) |
| 601 | { |
| 602 | n = (op & 0x1E0) >> 5; |
| 603 | info->sp_offset -= 4; |
| 604 | info->saved_regs[n] = info->sp_offset; |
| 605 | info->saved_regs[n + 1] = info->sp_offset + 2; |
| 606 | return 1; |
| 607 | } |
| 608 | |
| 609 | /* subi sp, n */ |
| 610 | if ((op & 0x7FE1) == 0x01E1) |
| 611 | { |
| 612 | n = (op & 0x1E) >> 1; |
| 613 | if (n == 0) |
| 614 | n = 16; |
| 615 | info->sp_offset -= n; |
| 616 | return 1; |
| 617 | } |
| 618 | |
| 619 | /* mv r11, sp */ |
| 620 | if (op == 0x417E) |
| 621 | { |
| 622 | info->uses_frame = 1; |
| 623 | info->r11_offset = info->sp_offset; |
| 624 | return 1; |
| 625 | } |
| 626 | |
| 627 | /* st rn, @r11 */ |
| 628 | if ((op & 0x7E1F) == 0x6816) |
| 629 | { |
| 630 | n = (op & 0x1E0) >> 5; |
| 631 | info->saved_regs[n] = info->r11_offset; |
| 632 | return 1; |
| 633 | } |
| 634 | |
| 635 | /* nop */ |
| 636 | if (op == 0x5E00) |
| 637 | return 1; |
| 638 | |
| 639 | /* st rn, @sp */ |
| 640 | if ((op & 0x7E1F) == 0x681E) |
| 641 | { |
| 642 | n = (op & 0x1E0) >> 5; |
| 643 | info->saved_regs[n] = info->sp_offset; |
| 644 | return 1; |
| 645 | } |
| 646 | |
| 647 | /* st2w rn, @sp */ |
| 648 | if ((op & 0x7E3F) == 0x3A1E) |
| 649 | { |
| 650 | n = (op & 0x1E0) >> 5; |
| 651 | info->saved_regs[n] = info->sp_offset; |
| 652 | info->saved_regs[n + 1] = info->sp_offset + 2; |
| 653 | return 1; |
| 654 | } |
| 655 | |
| 656 | return 0; |
| 657 | } |
| 658 | |
| 659 | /* Put here the code to store, into fi->saved_regs, the addresses of |
| 660 | the saved registers of frame described by FRAME_INFO. This |
| 661 | includes special registers such as pc and fp saved in special ways |
| 662 | in the stack frame. sp is even more special: the address we return |
| 663 | for it IS the sp for the next frame. */ |
| 664 | |
| 665 | struct d10v_unwind_cache * |
| 666 | d10v_frame_unwind_cache (struct frame_info *next_frame, |
| 667 | void **this_prologue_cache) |
| 668 | { |
| 669 | CORE_ADDR pc; |
| 670 | ULONGEST prev_sp; |
| 671 | ULONGEST this_base; |
| 672 | unsigned long op; |
| 673 | unsigned short op1, op2; |
| 674 | int i; |
| 675 | struct d10v_unwind_cache *info; |
| 676 | |
| 677 | if ((*this_prologue_cache)) |
| 678 | return (*this_prologue_cache); |
| 679 | |
| 680 | info = FRAME_OBSTACK_ZALLOC (struct d10v_unwind_cache); |
| 681 | (*this_prologue_cache) = info; |
| 682 | info->saved_regs = FRAME_OBSTACK_CALLOC (NUM_REGS, CORE_ADDR); |
| 683 | |
| 684 | info->size = 0; |
| 685 | info->return_pc = 0; |
| 686 | info->sp_offset = 0; |
| 687 | |
| 688 | info->uses_frame = 0; |
| 689 | for (pc = frame_func_unwind (next_frame); |
| 690 | pc > 0 && pc < frame_pc_unwind (next_frame); |
| 691 | pc += 4) |
| 692 | { |
| 693 | op = (unsigned long) read_memory_integer (pc, 4); |
| 694 | if ((op & 0xC0000000) == 0xC0000000) |
| 695 | { |
| 696 | /* long instruction */ |
| 697 | if ((op & 0x3FFF0000) == 0x01FF0000) |
| 698 | { |
| 699 | /* add3 sp,sp,n */ |
| 700 | short n = op & 0xFFFF; |
| 701 | info->sp_offset += n; |
| 702 | } |
| 703 | else if ((op & 0x3F0F0000) == 0x340F0000) |
| 704 | { |
| 705 | /* st rn, @(offset,sp) */ |
| 706 | short offset = op & 0xFFFF; |
| 707 | short n = (op >> 20) & 0xF; |
| 708 | info->saved_regs[n] = info->sp_offset + offset; |
| 709 | } |
| 710 | else if ((op & 0x3F1F0000) == 0x350F0000) |
| 711 | { |
| 712 | /* st2w rn, @(offset,sp) */ |
| 713 | short offset = op & 0xFFFF; |
| 714 | short n = (op >> 20) & 0xF; |
| 715 | info->saved_regs[n] = info->sp_offset + offset; |
| 716 | info->saved_regs[n + 1] = info->sp_offset + offset + 2; |
| 717 | } |
| 718 | else |
| 719 | break; |
| 720 | } |
| 721 | else |
| 722 | { |
| 723 | /* short instructions */ |
| 724 | if ((op & 0xC0000000) == 0x80000000) |
| 725 | { |
| 726 | op2 = (op & 0x3FFF8000) >> 15; |
| 727 | op1 = op & 0x7FFF; |
| 728 | } |
| 729 | else |
| 730 | { |
| 731 | op1 = (op & 0x3FFF8000) >> 15; |
| 732 | op2 = op & 0x7FFF; |
| 733 | } |
| 734 | if (!prologue_find_regs (info, op1, pc) |
| 735 | || !prologue_find_regs (info, op2, pc)) |
| 736 | break; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | info->size = -info->sp_offset; |
| 741 | |
| 742 | /* Compute the frame's base, and the previous frame's SP. */ |
| 743 | if (info->uses_frame) |
| 744 | { |
| 745 | /* The SP was moved to the FP. This indicates that a new frame |
| 746 | was created. Get THIS frame's FP value by unwinding it from |
| 747 | the next frame. */ |
| 748 | frame_unwind_unsigned_register (next_frame, D10V_FP_REGNUM, &this_base); |
| 749 | /* The FP points at the last saved register. Adjust the FP back |
| 750 | to before the first saved register giving the SP. */ |
| 751 | prev_sp = this_base + info->size; |
| 752 | } |
| 753 | else if (info->saved_regs[D10V_SP_REGNUM]) |
| 754 | { |
| 755 | /* The SP was saved (which is very unusual), the frame base is |
| 756 | just the PREV's frame's TOP-OF-STACK. */ |
| 757 | this_base = read_memory_unsigned_integer (info->saved_regs[D10V_SP_REGNUM], |
| 758 | register_size (current_gdbarch, |
| 759 | D10V_SP_REGNUM)); |
| 760 | prev_sp = this_base; |
| 761 | } |
| 762 | else |
| 763 | { |
| 764 | /* Assume that the FP is this frame's SP but with that pushed |
| 765 | stack space added back. */ |
| 766 | frame_unwind_unsigned_register (next_frame, D10V_SP_REGNUM, &this_base); |
| 767 | prev_sp = this_base + info->size; |
| 768 | } |
| 769 | |
| 770 | info->base = d10v_make_daddr (this_base); |
| 771 | info->prev_sp = d10v_make_daddr (prev_sp); |
| 772 | |
| 773 | /* Adjust all the saved registers so that they contain addresses and |
| 774 | not offsets. */ |
| 775 | for (i = 0; i < NUM_REGS - 1; i++) |
| 776 | if (info->saved_regs[i]) |
| 777 | { |
| 778 | info->saved_regs[i] = (info->prev_sp + info->saved_regs[i]); |
| 779 | } |
| 780 | |
| 781 | if (info->saved_regs[LR_REGNUM]) |
| 782 | { |
| 783 | CORE_ADDR return_pc |
| 784 | = read_memory_unsigned_integer (info->saved_regs[LR_REGNUM], |
| 785 | register_size (current_gdbarch, LR_REGNUM)); |
| 786 | info->return_pc = d10v_make_iaddr (return_pc); |
| 787 | } |
| 788 | else |
| 789 | { |
| 790 | ULONGEST return_pc; |
| 791 | frame_unwind_unsigned_register (next_frame, LR_REGNUM, &return_pc); |
| 792 | info->return_pc = d10v_make_iaddr (return_pc); |
| 793 | } |
| 794 | |
| 795 | /* The D10V_SP_REGNUM is special. Instead of the address of the SP, the |
| 796 | previous frame's SP value is saved. */ |
| 797 | info->saved_regs[D10V_SP_REGNUM] = info->prev_sp; |
| 798 | |
| 799 | return info; |
| 800 | } |
| 801 | |
| 802 | static void |
| 803 | d10v_print_registers_info (struct gdbarch *gdbarch, struct ui_file *file, |
| 804 | struct frame_info *frame, int regnum, int all) |
| 805 | { |
| 806 | if (regnum >= 0) |
| 807 | { |
| 808 | default_print_registers_info (gdbarch, file, frame, regnum, all); |
| 809 | return; |
| 810 | } |
| 811 | |
| 812 | { |
| 813 | ULONGEST pc, psw, rpt_s, rpt_e, rpt_c; |
| 814 | frame_read_unsigned_register (frame, PC_REGNUM, &pc); |
| 815 | frame_read_unsigned_register (frame, PSW_REGNUM, &psw); |
| 816 | frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_s", -1), &rpt_s); |
| 817 | frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_e", -1), &rpt_e); |
| 818 | frame_read_unsigned_register (frame, frame_map_name_to_regnum ("rpt_c", -1), &rpt_c); |
| 819 | fprintf_filtered (file, "PC=%04lx (0x%lx) PSW=%04lx RPT_S=%04lx RPT_E=%04lx RPT_C=%04lx\n", |
| 820 | (long) pc, (long) d10v_make_iaddr (pc), (long) psw, |
| 821 | (long) rpt_s, (long) rpt_e, (long) rpt_c); |
| 822 | } |
| 823 | |
| 824 | { |
| 825 | int group; |
| 826 | for (group = 0; group < 16; group += 8) |
| 827 | { |
| 828 | int r; |
| 829 | fprintf_filtered (file, "R%d-R%-2d", group, group + 7); |
| 830 | for (r = group; r < group + 8; r++) |
| 831 | { |
| 832 | ULONGEST tmp; |
| 833 | frame_read_unsigned_register (frame, r, &tmp); |
| 834 | fprintf_filtered (file, " %04lx", (long) tmp); |
| 835 | } |
| 836 | fprintf_filtered (file, "\n"); |
| 837 | } |
| 838 | } |
| 839 | |
| 840 | /* Note: The IMAP/DMAP registers don't participate in function |
| 841 | calls. Don't bother trying to unwind them. */ |
| 842 | |
| 843 | { |
| 844 | int a; |
| 845 | for (a = 0; a < NR_IMAP_REGS; a++) |
| 846 | { |
| 847 | if (a > 0) |
| 848 | fprintf_filtered (file, " "); |
| 849 | fprintf_filtered (file, "IMAP%d %04lx", a, d10v_imap_register (a)); |
| 850 | } |
| 851 | if (nr_dmap_regs (gdbarch) == 1) |
| 852 | /* Registers DMAP0 and DMAP1 are constant. Just return dmap2. */ |
| 853 | fprintf_filtered (file, " DMAP %04lx\n", d10v_dmap_register (2)); |
| 854 | else |
| 855 | { |
| 856 | for (a = 0; a < nr_dmap_regs (gdbarch); a++) |
| 857 | { |
| 858 | fprintf_filtered (file, " DMAP%d %04lx", a, d10v_dmap_register (a)); |
| 859 | } |
| 860 | fprintf_filtered (file, "\n"); |
| 861 | } |
| 862 | } |
| 863 | |
| 864 | { |
| 865 | char *num = alloca (max_register_size (gdbarch)); |
| 866 | int a; |
| 867 | fprintf_filtered (file, "A0-A%d", NR_A_REGS - 1); |
| 868 | for (a = a0_regnum (gdbarch); a < a0_regnum (gdbarch) + NR_A_REGS; a++) |
| 869 | { |
| 870 | int i; |
| 871 | fprintf_filtered (file, " "); |
| 872 | frame_read_register (frame, a, num); |
| 873 | for (i = 0; i < register_size (current_gdbarch, a); i++) |
| 874 | { |
| 875 | fprintf_filtered (file, "%02x", (num[i] & 0xff)); |
| 876 | } |
| 877 | } |
| 878 | } |
| 879 | fprintf_filtered (file, "\n"); |
| 880 | } |
| 881 | |
| 882 | static void |
| 883 | show_regs (char *args, int from_tty) |
| 884 | { |
| 885 | d10v_print_registers_info (current_gdbarch, gdb_stdout, |
| 886 | get_current_frame (), -1, 1); |
| 887 | } |
| 888 | |
| 889 | static CORE_ADDR |
| 890 | d10v_read_pc (ptid_t ptid) |
| 891 | { |
| 892 | ptid_t save_ptid; |
| 893 | CORE_ADDR pc; |
| 894 | CORE_ADDR retval; |
| 895 | |
| 896 | save_ptid = inferior_ptid; |
| 897 | inferior_ptid = ptid; |
| 898 | pc = (int) read_register (PC_REGNUM); |
| 899 | inferior_ptid = save_ptid; |
| 900 | retval = d10v_make_iaddr (pc); |
| 901 | return retval; |
| 902 | } |
| 903 | |
| 904 | static void |
| 905 | d10v_write_pc (CORE_ADDR val, ptid_t ptid) |
| 906 | { |
| 907 | ptid_t save_ptid; |
| 908 | |
| 909 | save_ptid = inferior_ptid; |
| 910 | inferior_ptid = ptid; |
| 911 | write_register (PC_REGNUM, d10v_convert_iaddr_to_raw (val)); |
| 912 | inferior_ptid = save_ptid; |
| 913 | } |
| 914 | |
| 915 | static CORE_ADDR |
| 916 | d10v_read_sp (void) |
| 917 | { |
| 918 | return (d10v_make_daddr (read_register (D10V_SP_REGNUM))); |
| 919 | } |
| 920 | |
| 921 | /* When arguments must be pushed onto the stack, they go on in reverse |
| 922 | order. The below implements a FILO (stack) to do this. */ |
| 923 | |
| 924 | struct stack_item |
| 925 | { |
| 926 | int len; |
| 927 | struct stack_item *prev; |
| 928 | void *data; |
| 929 | }; |
| 930 | |
| 931 | static struct stack_item *push_stack_item (struct stack_item *prev, |
| 932 | void *contents, int len); |
| 933 | static struct stack_item * |
| 934 | push_stack_item (struct stack_item *prev, void *contents, int len) |
| 935 | { |
| 936 | struct stack_item *si; |
| 937 | si = xmalloc (sizeof (struct stack_item)); |
| 938 | si->data = xmalloc (len); |
| 939 | si->len = len; |
| 940 | si->prev = prev; |
| 941 | memcpy (si->data, contents, len); |
| 942 | return si; |
| 943 | } |
| 944 | |
| 945 | static struct stack_item *pop_stack_item (struct stack_item *si); |
| 946 | static struct stack_item * |
| 947 | pop_stack_item (struct stack_item *si) |
| 948 | { |
| 949 | struct stack_item *dead = si; |
| 950 | si = si->prev; |
| 951 | xfree (dead->data); |
| 952 | xfree (dead); |
| 953 | return si; |
| 954 | } |
| 955 | |
| 956 | |
| 957 | static CORE_ADDR |
| 958 | d10v_push_dummy_call (struct gdbarch *gdbarch, struct regcache *regcache, |
| 959 | CORE_ADDR dummy_addr, int nargs, struct value **args, |
| 960 | CORE_ADDR sp, int struct_return, CORE_ADDR struct_addr) |
| 961 | { |
| 962 | int i; |
| 963 | int regnum = ARG1_REGNUM; |
| 964 | struct stack_item *si = NULL; |
| 965 | long val; |
| 966 | |
| 967 | /* Set the return address. For the d10v, the return breakpoint is |
| 968 | always at DUMMY_ADDR. */ |
| 969 | regcache_cooked_write_unsigned (regcache, LR_REGNUM, |
| 970 | d10v_convert_iaddr_to_raw (dummy_addr)); |
| 971 | |
| 972 | /* If STRUCT_RETURN is true, then the struct return address (in |
| 973 | STRUCT_ADDR) will consume the first argument-passing register. |
| 974 | Both adjust the register count and store that value. */ |
| 975 | if (struct_return) |
| 976 | { |
| 977 | regcache_cooked_write_unsigned (regcache, regnum, struct_addr); |
| 978 | regnum++; |
| 979 | } |
| 980 | |
| 981 | /* Fill in registers and arg lists */ |
| 982 | for (i = 0; i < nargs; i++) |
| 983 | { |
| 984 | struct value *arg = args[i]; |
| 985 | struct type *type = check_typedef (VALUE_TYPE (arg)); |
| 986 | char *contents = VALUE_CONTENTS (arg); |
| 987 | int len = TYPE_LENGTH (type); |
| 988 | int aligned_regnum = (regnum + 1) & ~1; |
| 989 | |
| 990 | /* printf ("push: type=%d len=%d\n", TYPE_CODE (type), len); */ |
| 991 | if (len <= 2 && regnum <= ARGN_REGNUM) |
| 992 | /* fits in a single register, do not align */ |
| 993 | { |
| 994 | val = extract_unsigned_integer (contents, len); |
| 995 | regcache_cooked_write_unsigned (regcache, regnum++, val); |
| 996 | } |
| 997 | else if (len <= (ARGN_REGNUM - aligned_regnum + 1) * 2) |
| 998 | /* value fits in remaining registers, store keeping left |
| 999 | aligned */ |
| 1000 | { |
| 1001 | int b; |
| 1002 | regnum = aligned_regnum; |
| 1003 | for (b = 0; b < (len & ~1); b += 2) |
| 1004 | { |
| 1005 | val = extract_unsigned_integer (&contents[b], 2); |
| 1006 | regcache_cooked_write_unsigned (regcache, regnum++, val); |
| 1007 | } |
| 1008 | if (b < len) |
| 1009 | { |
| 1010 | val = extract_unsigned_integer (&contents[b], 1); |
| 1011 | regcache_cooked_write_unsigned (regcache, regnum++, (val << 8)); |
| 1012 | } |
| 1013 | } |
| 1014 | else |
| 1015 | { |
| 1016 | /* arg will go onto stack */ |
| 1017 | regnum = ARGN_REGNUM + 1; |
| 1018 | si = push_stack_item (si, contents, len); |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | while (si) |
| 1023 | { |
| 1024 | sp = (sp - si->len) & ~1; |
| 1025 | write_memory (sp, si->data, si->len); |
| 1026 | si = pop_stack_item (si); |
| 1027 | } |
| 1028 | |
| 1029 | /* Finally, update the SP register. */ |
| 1030 | regcache_cooked_write_unsigned (regcache, D10V_SP_REGNUM, |
| 1031 | d10v_convert_daddr_to_raw (sp)); |
| 1032 | |
| 1033 | return sp; |
| 1034 | } |
| 1035 | |
| 1036 | |
| 1037 | /* Given a return value in `regbuf' with a type `valtype', |
| 1038 | extract and copy its value into `valbuf'. */ |
| 1039 | |
| 1040 | static void |
| 1041 | d10v_extract_return_value (struct type *type, struct regcache *regcache, |
| 1042 | void *valbuf) |
| 1043 | { |
| 1044 | int len; |
| 1045 | if (TYPE_LENGTH (type) == 1) |
| 1046 | { |
| 1047 | ULONGEST c; |
| 1048 | regcache_cooked_read_unsigned (regcache, RET1_REGNUM, &c); |
| 1049 | store_unsigned_integer (valbuf, 1, c); |
| 1050 | } |
| 1051 | else |
| 1052 | { |
| 1053 | /* For return values of odd size, the first byte is in the |
| 1054 | least significant part of the first register. The |
| 1055 | remaining bytes in remaining registers. Interestingly, when |
| 1056 | such values are passed in, the last byte is in the most |
| 1057 | significant byte of that same register - wierd. */ |
| 1058 | int reg = RET1_REGNUM; |
| 1059 | int off = 0; |
| 1060 | if (TYPE_LENGTH (type) & 1) |
| 1061 | { |
| 1062 | regcache_cooked_read_part (regcache, RET1_REGNUM, 1, 1, |
| 1063 | (bfd_byte *)valbuf + off); |
| 1064 | off++; |
| 1065 | reg++; |
| 1066 | } |
| 1067 | /* Transfer the remaining registers. */ |
| 1068 | for (; off < TYPE_LENGTH (type); reg++, off += 2) |
| 1069 | { |
| 1070 | regcache_cooked_read (regcache, RET1_REGNUM + reg, |
| 1071 | (bfd_byte *) valbuf + off); |
| 1072 | } |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | /* Translate a GDB virtual ADDR/LEN into a format the remote target |
| 1077 | understands. Returns number of bytes that can be transfered |
| 1078 | starting at TARG_ADDR. Return ZERO if no bytes can be transfered |
| 1079 | (segmentation fault). Since the simulator knows all about how the |
| 1080 | VM system works, we just call that to do the translation. */ |
| 1081 | |
| 1082 | static void |
| 1083 | remote_d10v_translate_xfer_address (CORE_ADDR memaddr, int nr_bytes, |
| 1084 | CORE_ADDR *targ_addr, int *targ_len) |
| 1085 | { |
| 1086 | long out_addr; |
| 1087 | long out_len; |
| 1088 | out_len = sim_d10v_translate_addr (memaddr, nr_bytes, |
| 1089 | &out_addr, |
| 1090 | d10v_dmap_register, |
| 1091 | d10v_imap_register); |
| 1092 | *targ_addr = out_addr; |
| 1093 | *targ_len = out_len; |
| 1094 | } |
| 1095 | |
| 1096 | |
| 1097 | /* The following code implements access to, and display of, the D10V's |
| 1098 | instruction trace buffer. The buffer consists of 64K or more |
| 1099 | 4-byte words of data, of which each words includes an 8-bit count, |
| 1100 | an 8-bit segment number, and a 16-bit instruction address. |
| 1101 | |
| 1102 | In theory, the trace buffer is continuously capturing instruction |
| 1103 | data that the CPU presents on its "debug bus", but in practice, the |
| 1104 | ROMified GDB stub only enables tracing when it continues or steps |
| 1105 | the program, and stops tracing when the program stops; so it |
| 1106 | actually works for GDB to read the buffer counter out of memory and |
| 1107 | then read each trace word. The counter records where the tracing |
| 1108 | stops, but there is no record of where it started, so we remember |
| 1109 | the PC when we resumed and then search backwards in the trace |
| 1110 | buffer for a word that includes that address. This is not perfect, |
| 1111 | because you will miss trace data if the resumption PC is the target |
| 1112 | of a branch. (The value of the buffer counter is semi-random, any |
| 1113 | trace data from a previous program stop is gone.) */ |
| 1114 | |
| 1115 | /* The address of the last word recorded in the trace buffer. */ |
| 1116 | |
| 1117 | #define DBBC_ADDR (0xd80000) |
| 1118 | |
| 1119 | /* The base of the trace buffer, at least for the "Board_0". */ |
| 1120 | |
| 1121 | #define TRACE_BUFFER_BASE (0xf40000) |
| 1122 | |
| 1123 | static void trace_command (char *, int); |
| 1124 | |
| 1125 | static void untrace_command (char *, int); |
| 1126 | |
| 1127 | static void trace_info (char *, int); |
| 1128 | |
| 1129 | static void tdisassemble_command (char *, int); |
| 1130 | |
| 1131 | static void display_trace (int, int); |
| 1132 | |
| 1133 | /* True when instruction traces are being collected. */ |
| 1134 | |
| 1135 | static int tracing; |
| 1136 | |
| 1137 | /* Remembered PC. */ |
| 1138 | |
| 1139 | static CORE_ADDR last_pc; |
| 1140 | |
| 1141 | /* True when trace output should be displayed whenever program stops. */ |
| 1142 | |
| 1143 | static int trace_display; |
| 1144 | |
| 1145 | /* True when trace listing should include source lines. */ |
| 1146 | |
| 1147 | static int default_trace_show_source = 1; |
| 1148 | |
| 1149 | struct trace_buffer |
| 1150 | { |
| 1151 | int size; |
| 1152 | short *counts; |
| 1153 | CORE_ADDR *addrs; |
| 1154 | } |
| 1155 | trace_data; |
| 1156 | |
| 1157 | static void |
| 1158 | trace_command (char *args, int from_tty) |
| 1159 | { |
| 1160 | /* Clear the host-side trace buffer, allocating space if needed. */ |
| 1161 | trace_data.size = 0; |
| 1162 | if (trace_data.counts == NULL) |
| 1163 | trace_data.counts = XCALLOC (65536, short); |
| 1164 | if (trace_data.addrs == NULL) |
| 1165 | trace_data.addrs = XCALLOC (65536, CORE_ADDR); |
| 1166 | |
| 1167 | tracing = 1; |
| 1168 | |
| 1169 | printf_filtered ("Tracing is now on.\n"); |
| 1170 | } |
| 1171 | |
| 1172 | static void |
| 1173 | untrace_command (char *args, int from_tty) |
| 1174 | { |
| 1175 | tracing = 0; |
| 1176 | |
| 1177 | printf_filtered ("Tracing is now off.\n"); |
| 1178 | } |
| 1179 | |
| 1180 | static void |
| 1181 | trace_info (char *args, int from_tty) |
| 1182 | { |
| 1183 | int i; |
| 1184 | |
| 1185 | if (trace_data.size) |
| 1186 | { |
| 1187 | printf_filtered ("%d entries in trace buffer:\n", trace_data.size); |
| 1188 | |
| 1189 | for (i = 0; i < trace_data.size; ++i) |
| 1190 | { |
| 1191 | printf_filtered ("%d: %d instruction%s at 0x%s\n", |
| 1192 | i, |
| 1193 | trace_data.counts[i], |
| 1194 | (trace_data.counts[i] == 1 ? "" : "s"), |
| 1195 | paddr_nz (trace_data.addrs[i])); |
| 1196 | } |
| 1197 | } |
| 1198 | else |
| 1199 | printf_filtered ("No entries in trace buffer.\n"); |
| 1200 | |
| 1201 | printf_filtered ("Tracing is currently %s.\n", (tracing ? "on" : "off")); |
| 1202 | } |
| 1203 | |
| 1204 | static void |
| 1205 | d10v_eva_prepare_to_trace (void) |
| 1206 | { |
| 1207 | if (!tracing) |
| 1208 | return; |
| 1209 | |
| 1210 | last_pc = read_register (PC_REGNUM); |
| 1211 | } |
| 1212 | |
| 1213 | /* Collect trace data from the target board and format it into a form |
| 1214 | more useful for display. */ |
| 1215 | |
| 1216 | static void |
| 1217 | d10v_eva_get_trace_data (void) |
| 1218 | { |
| 1219 | int count, i, j, oldsize; |
| 1220 | int trace_addr, trace_seg, trace_cnt, next_cnt; |
| 1221 | unsigned int last_trace, trace_word, next_word; |
| 1222 | unsigned int *tmpspace; |
| 1223 | |
| 1224 | if (!tracing) |
| 1225 | return; |
| 1226 | |
| 1227 | tmpspace = xmalloc (65536 * sizeof (unsigned int)); |
| 1228 | |
| 1229 | last_trace = read_memory_unsigned_integer (DBBC_ADDR, 2) << 2; |
| 1230 | |
| 1231 | /* Collect buffer contents from the target, stopping when we reach |
| 1232 | the word recorded when execution resumed. */ |
| 1233 | |
| 1234 | count = 0; |
| 1235 | while (last_trace > 0) |
| 1236 | { |
| 1237 | QUIT; |
| 1238 | trace_word = |
| 1239 | read_memory_unsigned_integer (TRACE_BUFFER_BASE + last_trace, 4); |
| 1240 | trace_addr = trace_word & 0xffff; |
| 1241 | last_trace -= 4; |
| 1242 | /* Ignore an apparently nonsensical entry. */ |
| 1243 | if (trace_addr == 0xffd5) |
| 1244 | continue; |
| 1245 | tmpspace[count++] = trace_word; |
| 1246 | if (trace_addr == last_pc) |
| 1247 | break; |
| 1248 | if (count > 65535) |
| 1249 | break; |
| 1250 | } |
| 1251 | |
| 1252 | /* Move the data to the host-side trace buffer, adjusting counts to |
| 1253 | include the last instruction executed and transforming the address |
| 1254 | into something that GDB likes. */ |
| 1255 | |
| 1256 | for (i = 0; i < count; ++i) |
| 1257 | { |
| 1258 | trace_word = tmpspace[i]; |
| 1259 | next_word = ((i == 0) ? 0 : tmpspace[i - 1]); |
| 1260 | trace_addr = trace_word & 0xffff; |
| 1261 | next_cnt = (next_word >> 24) & 0xff; |
| 1262 | j = trace_data.size + count - i - 1; |
| 1263 | trace_data.addrs[j] = (trace_addr << 2) + 0x1000000; |
| 1264 | trace_data.counts[j] = next_cnt + 1; |
| 1265 | } |
| 1266 | |
| 1267 | oldsize = trace_data.size; |
| 1268 | trace_data.size += count; |
| 1269 | |
| 1270 | xfree (tmpspace); |
| 1271 | |
| 1272 | if (trace_display) |
| 1273 | display_trace (oldsize, trace_data.size); |
| 1274 | } |
| 1275 | |
| 1276 | static void |
| 1277 | tdisassemble_command (char *arg, int from_tty) |
| 1278 | { |
| 1279 | int i, count; |
| 1280 | CORE_ADDR low, high; |
| 1281 | |
| 1282 | if (!arg) |
| 1283 | { |
| 1284 | low = 0; |
| 1285 | high = trace_data.size; |
| 1286 | } |
| 1287 | else |
| 1288 | { |
| 1289 | char *space_index = strchr (arg, ' '); |
| 1290 | if (space_index == NULL) |
| 1291 | { |
| 1292 | low = parse_and_eval_address (arg); |
| 1293 | high = low + 5; |
| 1294 | } |
| 1295 | else |
| 1296 | { |
| 1297 | /* Two arguments. */ |
| 1298 | *space_index = '\0'; |
| 1299 | low = parse_and_eval_address (arg); |
| 1300 | high = parse_and_eval_address (space_index + 1); |
| 1301 | if (high < low) |
| 1302 | high = low; |
| 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | printf_filtered ("Dump of trace from %s to %s:\n", paddr_u (low), paddr_u (high)); |
| 1307 | |
| 1308 | display_trace (low, high); |
| 1309 | |
| 1310 | printf_filtered ("End of trace dump.\n"); |
| 1311 | gdb_flush (gdb_stdout); |
| 1312 | } |
| 1313 | |
| 1314 | static void |
| 1315 | display_trace (int low, int high) |
| 1316 | { |
| 1317 | int i, count, trace_show_source, first, suppress; |
| 1318 | CORE_ADDR next_address; |
| 1319 | |
| 1320 | trace_show_source = default_trace_show_source; |
| 1321 | if (!have_full_symbols () && !have_partial_symbols ()) |
| 1322 | { |
| 1323 | trace_show_source = 0; |
| 1324 | printf_filtered ("No symbol table is loaded. Use the \"file\" command.\n"); |
| 1325 | printf_filtered ("Trace will not display any source.\n"); |
| 1326 | } |
| 1327 | |
| 1328 | first = 1; |
| 1329 | suppress = 0; |
| 1330 | for (i = low; i < high; ++i) |
| 1331 | { |
| 1332 | next_address = trace_data.addrs[i]; |
| 1333 | count = trace_data.counts[i]; |
| 1334 | while (count-- > 0) |
| 1335 | { |
| 1336 | QUIT; |
| 1337 | if (trace_show_source) |
| 1338 | { |
| 1339 | struct symtab_and_line sal, sal_prev; |
| 1340 | |
| 1341 | sal_prev = find_pc_line (next_address - 4, 0); |
| 1342 | sal = find_pc_line (next_address, 0); |
| 1343 | |
| 1344 | if (sal.symtab) |
| 1345 | { |
| 1346 | if (first || sal.line != sal_prev.line) |
| 1347 | print_source_lines (sal.symtab, sal.line, sal.line + 1, 0); |
| 1348 | suppress = 0; |
| 1349 | } |
| 1350 | else |
| 1351 | { |
| 1352 | if (!suppress) |
| 1353 | /* FIXME-32x64--assumes sal.pc fits in long. */ |
| 1354 | printf_filtered ("No source file for address %s.\n", |
| 1355 | local_hex_string ((unsigned long) sal.pc)); |
| 1356 | suppress = 1; |
| 1357 | } |
| 1358 | } |
| 1359 | first = 0; |
| 1360 | print_address (next_address, gdb_stdout); |
| 1361 | printf_filtered (":"); |
| 1362 | printf_filtered ("\t"); |
| 1363 | wrap_here (" "); |
| 1364 | next_address += TARGET_PRINT_INSN (next_address, |
| 1365 | &deprecated_tm_print_insn_info); |
| 1366 | printf_filtered ("\n"); |
| 1367 | gdb_flush (gdb_stdout); |
| 1368 | } |
| 1369 | } |
| 1370 | } |
| 1371 | |
| 1372 | static CORE_ADDR |
| 1373 | d10v_unwind_pc (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 1374 | { |
| 1375 | ULONGEST pc; |
| 1376 | frame_unwind_unsigned_register (next_frame, PC_REGNUM, &pc); |
| 1377 | return d10v_make_iaddr (pc); |
| 1378 | } |
| 1379 | |
| 1380 | /* Given a GDB frame, determine the address of the calling function's |
| 1381 | frame. This will be used to create a new GDB frame struct. */ |
| 1382 | |
| 1383 | static void |
| 1384 | d10v_frame_this_id (struct frame_info *next_frame, |
| 1385 | void **this_prologue_cache, |
| 1386 | struct frame_id *this_id) |
| 1387 | { |
| 1388 | struct d10v_unwind_cache *info |
| 1389 | = d10v_frame_unwind_cache (next_frame, this_prologue_cache); |
| 1390 | CORE_ADDR base; |
| 1391 | CORE_ADDR func; |
| 1392 | struct frame_id id; |
| 1393 | |
| 1394 | /* The FUNC is easy. */ |
| 1395 | func = frame_func_unwind (next_frame); |
| 1396 | |
| 1397 | /* This is meant to halt the backtrace at "_start". Make sure we |
| 1398 | don't halt it at a generic dummy frame. */ |
| 1399 | if (func <= IMEM_START || inside_entry_file (func)) |
| 1400 | return; |
| 1401 | |
| 1402 | /* Hopefully the prologue analysis either correctly determined the |
| 1403 | frame's base (which is the SP from the previous frame), or set |
| 1404 | that base to "NULL". */ |
| 1405 | base = info->prev_sp; |
| 1406 | if (base == STACK_START || base == 0) |
| 1407 | return; |
| 1408 | |
| 1409 | id = frame_id_build (base, func); |
| 1410 | |
| 1411 | /* Check that we're not going round in circles with the same frame |
| 1412 | ID (but avoid applying the test to sentinel frames which do go |
| 1413 | round in circles). Can't use frame_id_eq() as that doesn't yet |
| 1414 | compare the frame's PC value. */ |
| 1415 | if (frame_relative_level (next_frame) >= 0 |
| 1416 | && get_frame_type (next_frame) != DUMMY_FRAME |
| 1417 | && frame_id_eq (get_frame_id (next_frame), id)) |
| 1418 | return; |
| 1419 | |
| 1420 | (*this_id) = id; |
| 1421 | } |
| 1422 | |
| 1423 | static void |
| 1424 | saved_regs_unwinder (struct frame_info *next_frame, |
| 1425 | CORE_ADDR *this_saved_regs, |
| 1426 | int regnum, int *optimizedp, |
| 1427 | enum lval_type *lvalp, CORE_ADDR *addrp, |
| 1428 | int *realnump, void *bufferp) |
| 1429 | { |
| 1430 | if (this_saved_regs[regnum] != 0) |
| 1431 | { |
| 1432 | if (regnum == D10V_SP_REGNUM) |
| 1433 | { |
| 1434 | /* SP register treated specially. */ |
| 1435 | *optimizedp = 0; |
| 1436 | *lvalp = not_lval; |
| 1437 | *addrp = 0; |
| 1438 | *realnump = -1; |
| 1439 | if (bufferp != NULL) |
| 1440 | store_unsigned_integer (bufferp, |
| 1441 | register_size (current_gdbarch, regnum), |
| 1442 | this_saved_regs[regnum]); |
| 1443 | } |
| 1444 | else |
| 1445 | { |
| 1446 | /* Any other register is saved in memory, fetch it but cache |
| 1447 | a local copy of its value. */ |
| 1448 | *optimizedp = 0; |
| 1449 | *lvalp = lval_memory; |
| 1450 | *addrp = this_saved_regs[regnum]; |
| 1451 | *realnump = -1; |
| 1452 | if (bufferp != NULL) |
| 1453 | { |
| 1454 | /* Read the value in from memory. */ |
| 1455 | read_memory (this_saved_regs[regnum], bufferp, |
| 1456 | register_size (current_gdbarch, regnum)); |
| 1457 | } |
| 1458 | } |
| 1459 | return; |
| 1460 | } |
| 1461 | |
| 1462 | /* No luck, assume this and the next frame have the same register |
| 1463 | value. If a value is needed, pass the request on down the chain; |
| 1464 | otherwise just return an indication that the value is in the same |
| 1465 | register as the next frame. */ |
| 1466 | frame_register_unwind (next_frame, regnum, optimizedp, lvalp, addrp, |
| 1467 | realnump, bufferp); |
| 1468 | } |
| 1469 | |
| 1470 | |
| 1471 | static void |
| 1472 | d10v_frame_prev_register (struct frame_info *next_frame, |
| 1473 | void **this_prologue_cache, |
| 1474 | int regnum, int *optimizedp, |
| 1475 | enum lval_type *lvalp, CORE_ADDR *addrp, |
| 1476 | int *realnump, void *bufferp) |
| 1477 | { |
| 1478 | struct d10v_unwind_cache *info |
| 1479 | = d10v_frame_unwind_cache (next_frame, this_prologue_cache); |
| 1480 | if (regnum == PC_REGNUM) |
| 1481 | { |
| 1482 | /* The call instruction saves the caller's PC in LR. The |
| 1483 | function prologue of the callee may then save the LR on the |
| 1484 | stack. Find that possibly saved LR value and return it. */ |
| 1485 | saved_regs_unwinder (next_frame, info->saved_regs, LR_REGNUM, optimizedp, |
| 1486 | lvalp, addrp, realnump, bufferp); |
| 1487 | } |
| 1488 | else |
| 1489 | { |
| 1490 | saved_regs_unwinder (next_frame, info->saved_regs, regnum, optimizedp, |
| 1491 | lvalp, addrp, realnump, bufferp); |
| 1492 | } |
| 1493 | } |
| 1494 | |
| 1495 | static const struct frame_unwind d10v_frame_unwind = { |
| 1496 | NORMAL_FRAME, |
| 1497 | d10v_frame_this_id, |
| 1498 | d10v_frame_prev_register |
| 1499 | }; |
| 1500 | |
| 1501 | const struct frame_unwind * |
| 1502 | d10v_frame_p (CORE_ADDR pc) |
| 1503 | { |
| 1504 | return &d10v_frame_unwind; |
| 1505 | } |
| 1506 | |
| 1507 | static CORE_ADDR |
| 1508 | d10v_frame_base_address (struct frame_info *next_frame, void **this_cache) |
| 1509 | { |
| 1510 | struct d10v_unwind_cache *info |
| 1511 | = d10v_frame_unwind_cache (next_frame, this_cache); |
| 1512 | return info->base; |
| 1513 | } |
| 1514 | |
| 1515 | static const struct frame_base d10v_frame_base = { |
| 1516 | &d10v_frame_unwind, |
| 1517 | d10v_frame_base_address, |
| 1518 | d10v_frame_base_address, |
| 1519 | d10v_frame_base_address |
| 1520 | }; |
| 1521 | |
| 1522 | /* Assuming NEXT_FRAME->prev is a dummy, return the frame ID of that |
| 1523 | dummy frame. The frame ID's base needs to match the TOS value |
| 1524 | saved by save_dummy_frame_tos(), and the PC match the dummy frame's |
| 1525 | breakpoint. */ |
| 1526 | |
| 1527 | static struct frame_id |
| 1528 | d10v_unwind_dummy_id (struct gdbarch *gdbarch, struct frame_info *next_frame) |
| 1529 | { |
| 1530 | ULONGEST base; |
| 1531 | frame_unwind_unsigned_register (next_frame, D10V_SP_REGNUM, &base); |
| 1532 | return frame_id_build (d10v_make_daddr (base), frame_pc_unwind (next_frame)); |
| 1533 | } |
| 1534 | |
| 1535 | static gdbarch_init_ftype d10v_gdbarch_init; |
| 1536 | |
| 1537 | static struct gdbarch * |
| 1538 | d10v_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
| 1539 | { |
| 1540 | struct gdbarch *gdbarch; |
| 1541 | int d10v_num_regs; |
| 1542 | struct gdbarch_tdep *tdep; |
| 1543 | gdbarch_register_name_ftype *d10v_register_name; |
| 1544 | gdbarch_register_sim_regno_ftype *d10v_register_sim_regno; |
| 1545 | |
| 1546 | /* Find a candidate among the list of pre-declared architectures. */ |
| 1547 | arches = gdbarch_list_lookup_by_info (arches, &info); |
| 1548 | if (arches != NULL) |
| 1549 | return arches->gdbarch; |
| 1550 | |
| 1551 | /* None found, create a new architecture from the information |
| 1552 | provided. */ |
| 1553 | tdep = XMALLOC (struct gdbarch_tdep); |
| 1554 | gdbarch = gdbarch_alloc (&info, tdep); |
| 1555 | |
| 1556 | switch (info.bfd_arch_info->mach) |
| 1557 | { |
| 1558 | case bfd_mach_d10v_ts2: |
| 1559 | d10v_num_regs = 37; |
| 1560 | d10v_register_name = d10v_ts2_register_name; |
| 1561 | d10v_register_sim_regno = d10v_ts2_register_sim_regno; |
| 1562 | tdep->a0_regnum = TS2_A0_REGNUM; |
| 1563 | tdep->nr_dmap_regs = TS2_NR_DMAP_REGS; |
| 1564 | tdep->dmap_register = d10v_ts2_dmap_register; |
| 1565 | tdep->imap_register = d10v_ts2_imap_register; |
| 1566 | break; |
| 1567 | default: |
| 1568 | case bfd_mach_d10v_ts3: |
| 1569 | d10v_num_regs = 42; |
| 1570 | d10v_register_name = d10v_ts3_register_name; |
| 1571 | d10v_register_sim_regno = d10v_ts3_register_sim_regno; |
| 1572 | tdep->a0_regnum = TS3_A0_REGNUM; |
| 1573 | tdep->nr_dmap_regs = TS3_NR_DMAP_REGS; |
| 1574 | tdep->dmap_register = d10v_ts3_dmap_register; |
| 1575 | tdep->imap_register = d10v_ts3_imap_register; |
| 1576 | break; |
| 1577 | } |
| 1578 | |
| 1579 | set_gdbarch_read_pc (gdbarch, d10v_read_pc); |
| 1580 | set_gdbarch_write_pc (gdbarch, d10v_write_pc); |
| 1581 | set_gdbarch_read_sp (gdbarch, d10v_read_sp); |
| 1582 | |
| 1583 | set_gdbarch_num_regs (gdbarch, d10v_num_regs); |
| 1584 | set_gdbarch_sp_regnum (gdbarch, D10V_SP_REGNUM); |
| 1585 | set_gdbarch_pc_regnum (gdbarch, 18); |
| 1586 | set_gdbarch_register_name (gdbarch, d10v_register_name); |
| 1587 | set_gdbarch_register_size (gdbarch, 2); |
| 1588 | set_gdbarch_register_bytes (gdbarch, (d10v_num_regs - 2) * 2 + 16); |
| 1589 | set_gdbarch_register_virtual_size (gdbarch, generic_register_size); |
| 1590 | set_gdbarch_register_type (gdbarch, d10v_register_type); |
| 1591 | |
| 1592 | set_gdbarch_ptr_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
| 1593 | set_gdbarch_addr_bit (gdbarch, 32); |
| 1594 | set_gdbarch_address_to_pointer (gdbarch, d10v_address_to_pointer); |
| 1595 | set_gdbarch_pointer_to_address (gdbarch, d10v_pointer_to_address); |
| 1596 | set_gdbarch_integer_to_address (gdbarch, d10v_integer_to_address); |
| 1597 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
| 1598 | set_gdbarch_int_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
| 1599 | set_gdbarch_long_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 1600 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 1601 | /* NOTE: The d10v as a 32 bit ``float'' and ``double''. ``long |
| 1602 | double'' is 64 bits. */ |
| 1603 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 1604 | set_gdbarch_double_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 1605 | set_gdbarch_long_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 1606 | switch (info.byte_order) |
| 1607 | { |
| 1608 | case BFD_ENDIAN_BIG: |
| 1609 | set_gdbarch_float_format (gdbarch, &floatformat_ieee_single_big); |
| 1610 | set_gdbarch_double_format (gdbarch, &floatformat_ieee_single_big); |
| 1611 | set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_big); |
| 1612 | break; |
| 1613 | case BFD_ENDIAN_LITTLE: |
| 1614 | set_gdbarch_float_format (gdbarch, &floatformat_ieee_single_little); |
| 1615 | set_gdbarch_double_format (gdbarch, &floatformat_ieee_single_little); |
| 1616 | set_gdbarch_long_double_format (gdbarch, &floatformat_ieee_double_little); |
| 1617 | break; |
| 1618 | default: |
| 1619 | internal_error (__FILE__, __LINE__, |
| 1620 | "d10v_gdbarch_init: bad byte order for float format"); |
| 1621 | } |
| 1622 | |
| 1623 | set_gdbarch_extract_return_value (gdbarch, d10v_extract_return_value); |
| 1624 | set_gdbarch_push_dummy_call (gdbarch, d10v_push_dummy_call); |
| 1625 | set_gdbarch_store_return_value (gdbarch, d10v_store_return_value); |
| 1626 | set_gdbarch_extract_struct_value_address (gdbarch, d10v_extract_struct_value_address); |
| 1627 | set_gdbarch_use_struct_convention (gdbarch, d10v_use_struct_convention); |
| 1628 | |
| 1629 | set_gdbarch_skip_prologue (gdbarch, d10v_skip_prologue); |
| 1630 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
| 1631 | set_gdbarch_decr_pc_after_break (gdbarch, 4); |
| 1632 | set_gdbarch_function_start_offset (gdbarch, 0); |
| 1633 | set_gdbarch_breakpoint_from_pc (gdbarch, d10v_breakpoint_from_pc); |
| 1634 | |
| 1635 | set_gdbarch_remote_translate_xfer_address (gdbarch, remote_d10v_translate_xfer_address); |
| 1636 | |
| 1637 | set_gdbarch_frame_args_skip (gdbarch, 0); |
| 1638 | set_gdbarch_frameless_function_invocation (gdbarch, frameless_look_for_prologue); |
| 1639 | |
| 1640 | set_gdbarch_frame_num_args (gdbarch, frame_num_args_unknown); |
| 1641 | set_gdbarch_frame_align (gdbarch, d10v_frame_align); |
| 1642 | |
| 1643 | set_gdbarch_register_sim_regno (gdbarch, d10v_register_sim_regno); |
| 1644 | |
| 1645 | set_gdbarch_print_registers_info (gdbarch, d10v_print_registers_info); |
| 1646 | |
| 1647 | frame_unwind_append_predicate (gdbarch, d10v_frame_p); |
| 1648 | frame_base_set_default (gdbarch, &d10v_frame_base); |
| 1649 | |
| 1650 | /* Methods for saving / extracting a dummy frame's ID. */ |
| 1651 | set_gdbarch_unwind_dummy_id (gdbarch, d10v_unwind_dummy_id); |
| 1652 | set_gdbarch_save_dummy_frame_tos (gdbarch, generic_save_dummy_frame_tos); |
| 1653 | |
| 1654 | /* Return the unwound PC value. */ |
| 1655 | set_gdbarch_unwind_pc (gdbarch, d10v_unwind_pc); |
| 1656 | |
| 1657 | set_gdbarch_print_insn (gdbarch, print_insn_d10v); |
| 1658 | |
| 1659 | return gdbarch; |
| 1660 | } |
| 1661 | |
| 1662 | void |
| 1663 | _initialize_d10v_tdep (void) |
| 1664 | { |
| 1665 | register_gdbarch_init (bfd_arch_d10v, d10v_gdbarch_init); |
| 1666 | |
| 1667 | target_resume_hook = d10v_eva_prepare_to_trace; |
| 1668 | target_wait_loop_hook = d10v_eva_get_trace_data; |
| 1669 | |
| 1670 | deprecate_cmd (add_com ("regs", class_vars, show_regs, "Print all registers"), |
| 1671 | "info registers"); |
| 1672 | |
| 1673 | add_com ("itrace", class_support, trace_command, |
| 1674 | "Enable tracing of instruction execution."); |
| 1675 | |
| 1676 | add_com ("iuntrace", class_support, untrace_command, |
| 1677 | "Disable tracing of instruction execution."); |
| 1678 | |
| 1679 | add_com ("itdisassemble", class_vars, tdisassemble_command, |
| 1680 | "Disassemble the trace buffer.\n\ |
| 1681 | Two optional arguments specify a range of trace buffer entries\n\ |
| 1682 | as reported by info trace (NOT addresses!)."); |
| 1683 | |
| 1684 | add_info ("itrace", trace_info, |
| 1685 | "Display info about the trace data buffer."); |
| 1686 | |
| 1687 | add_setshow_boolean_cmd ("itracedisplay", no_class, &trace_display, |
| 1688 | "Set automatic display of trace.\n", |
| 1689 | "Show automatic display of trace.\n", |
| 1690 | NULL, NULL, &setlist, &showlist); |
| 1691 | add_setshow_boolean_cmd ("itracesource", no_class, |
| 1692 | &default_trace_show_source, |
| 1693 | "Set display of source code with trace.\n", |
| 1694 | "Show display of source code with trace.\n", |
| 1695 | NULL, NULL, &setlist, &showlist); |
| 1696 | } |