| 1 | /* Target-dependent code for GDB, the GNU debugger. |
| 2 | |
| 3 | Copyright (C) 1986-2019 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 "frame.h" |
| 22 | #include "inferior.h" |
| 23 | #include "infrun.h" |
| 24 | #include "symtab.h" |
| 25 | #include "target.h" |
| 26 | #include "gdbcore.h" |
| 27 | #include "gdbcmd.h" |
| 28 | #include "objfiles.h" |
| 29 | #include "arch-utils.h" |
| 30 | #include "regcache.h" |
| 31 | #include "regset.h" |
| 32 | #include "target-float.h" |
| 33 | #include "value.h" |
| 34 | #include "parser-defs.h" |
| 35 | #include "osabi.h" |
| 36 | #include "infcall.h" |
| 37 | #include "sim-regno.h" |
| 38 | #include "gdb/sim-ppc.h" |
| 39 | #include "reggroups.h" |
| 40 | #include "dwarf2-frame.h" |
| 41 | #include "target-descriptions.h" |
| 42 | #include "user-regs.h" |
| 43 | #include "record-full.h" |
| 44 | #include "auxv.h" |
| 45 | |
| 46 | #include "coff/internal.h" /* for libcoff.h */ |
| 47 | #include "libcoff.h" /* for xcoff_data */ |
| 48 | #include "coff/xcoff.h" |
| 49 | #include "libxcoff.h" |
| 50 | |
| 51 | #include "elf-bfd.h" |
| 52 | #include "elf/ppc.h" |
| 53 | #include "elf/ppc64.h" |
| 54 | |
| 55 | #include "solib-svr4.h" |
| 56 | #include "ppc-tdep.h" |
| 57 | #include "ppc-ravenscar-thread.h" |
| 58 | |
| 59 | #include "dis-asm.h" |
| 60 | |
| 61 | #include "trad-frame.h" |
| 62 | #include "frame-unwind.h" |
| 63 | #include "frame-base.h" |
| 64 | |
| 65 | #include "ax.h" |
| 66 | #include "ax-gdb.h" |
| 67 | #include <algorithm> |
| 68 | |
| 69 | #include "features/rs6000/powerpc-32.c" |
| 70 | #include "features/rs6000/powerpc-altivec32.c" |
| 71 | #include "features/rs6000/powerpc-vsx32.c" |
| 72 | #include "features/rs6000/powerpc-403.c" |
| 73 | #include "features/rs6000/powerpc-403gc.c" |
| 74 | #include "features/rs6000/powerpc-405.c" |
| 75 | #include "features/rs6000/powerpc-505.c" |
| 76 | #include "features/rs6000/powerpc-601.c" |
| 77 | #include "features/rs6000/powerpc-602.c" |
| 78 | #include "features/rs6000/powerpc-603.c" |
| 79 | #include "features/rs6000/powerpc-604.c" |
| 80 | #include "features/rs6000/powerpc-64.c" |
| 81 | #include "features/rs6000/powerpc-altivec64.c" |
| 82 | #include "features/rs6000/powerpc-vsx64.c" |
| 83 | #include "features/rs6000/powerpc-7400.c" |
| 84 | #include "features/rs6000/powerpc-750.c" |
| 85 | #include "features/rs6000/powerpc-860.c" |
| 86 | #include "features/rs6000/powerpc-e500.c" |
| 87 | #include "features/rs6000/rs6000.c" |
| 88 | |
| 89 | /* Determine if regnum is an SPE pseudo-register. */ |
| 90 | #define IS_SPE_PSEUDOREG(tdep, regnum) ((tdep)->ppc_ev0_regnum >= 0 \ |
| 91 | && (regnum) >= (tdep)->ppc_ev0_regnum \ |
| 92 | && (regnum) < (tdep)->ppc_ev0_regnum + 32) |
| 93 | |
| 94 | /* Determine if regnum is a decimal float pseudo-register. */ |
| 95 | #define IS_DFP_PSEUDOREG(tdep, regnum) ((tdep)->ppc_dl0_regnum >= 0 \ |
| 96 | && (regnum) >= (tdep)->ppc_dl0_regnum \ |
| 97 | && (regnum) < (tdep)->ppc_dl0_regnum + 16) |
| 98 | |
| 99 | /* Determine if regnum is a "vX" alias for the raw "vrX" vector |
| 100 | registers. */ |
| 101 | #define IS_V_ALIAS_PSEUDOREG(tdep, regnum) (\ |
| 102 | (tdep)->ppc_v0_alias_regnum >= 0 \ |
| 103 | && (regnum) >= (tdep)->ppc_v0_alias_regnum \ |
| 104 | && (regnum) < (tdep)->ppc_v0_alias_regnum + ppc_num_vrs) |
| 105 | |
| 106 | /* Determine if regnum is a POWER7 VSX register. */ |
| 107 | #define IS_VSX_PSEUDOREG(tdep, regnum) ((tdep)->ppc_vsr0_regnum >= 0 \ |
| 108 | && (regnum) >= (tdep)->ppc_vsr0_regnum \ |
| 109 | && (regnum) < (tdep)->ppc_vsr0_regnum + ppc_num_vsrs) |
| 110 | |
| 111 | /* Determine if regnum is a POWER7 Extended FP register. */ |
| 112 | #define IS_EFP_PSEUDOREG(tdep, regnum) ((tdep)->ppc_efpr0_regnum >= 0 \ |
| 113 | && (regnum) >= (tdep)->ppc_efpr0_regnum \ |
| 114 | && (regnum) < (tdep)->ppc_efpr0_regnum + ppc_num_efprs) |
| 115 | |
| 116 | /* Determine if regnum is a checkpointed decimal float |
| 117 | pseudo-register. */ |
| 118 | #define IS_CDFP_PSEUDOREG(tdep, regnum) ((tdep)->ppc_cdl0_regnum >= 0 \ |
| 119 | && (regnum) >= (tdep)->ppc_cdl0_regnum \ |
| 120 | && (regnum) < (tdep)->ppc_cdl0_regnum + 16) |
| 121 | |
| 122 | /* Determine if regnum is a Checkpointed POWER7 VSX register. */ |
| 123 | #define IS_CVSX_PSEUDOREG(tdep, regnum) ((tdep)->ppc_cvsr0_regnum >= 0 \ |
| 124 | && (regnum) >= (tdep)->ppc_cvsr0_regnum \ |
| 125 | && (regnum) < (tdep)->ppc_cvsr0_regnum + ppc_num_vsrs) |
| 126 | |
| 127 | /* Determine if regnum is a Checkpointed POWER7 Extended FP register. */ |
| 128 | #define IS_CEFP_PSEUDOREG(tdep, regnum) ((tdep)->ppc_cefpr0_regnum >= 0 \ |
| 129 | && (regnum) >= (tdep)->ppc_cefpr0_regnum \ |
| 130 | && (regnum) < (tdep)->ppc_cefpr0_regnum + ppc_num_efprs) |
| 131 | |
| 132 | /* Holds the current set of options to be passed to the disassembler. */ |
| 133 | static char *powerpc_disassembler_options; |
| 134 | |
| 135 | /* The list of available "set powerpc ..." and "show powerpc ..." |
| 136 | commands. */ |
| 137 | static struct cmd_list_element *setpowerpccmdlist = NULL; |
| 138 | static struct cmd_list_element *showpowerpccmdlist = NULL; |
| 139 | |
| 140 | static enum auto_boolean powerpc_soft_float_global = AUTO_BOOLEAN_AUTO; |
| 141 | |
| 142 | /* The vector ABI to use. Keep this in sync with powerpc_vector_abi. */ |
| 143 | static const char *const powerpc_vector_strings[] = |
| 144 | { |
| 145 | "auto", |
| 146 | "generic", |
| 147 | "altivec", |
| 148 | "spe", |
| 149 | NULL |
| 150 | }; |
| 151 | |
| 152 | /* A variable that can be configured by the user. */ |
| 153 | static enum powerpc_vector_abi powerpc_vector_abi_global = POWERPC_VEC_AUTO; |
| 154 | static const char *powerpc_vector_abi_string = "auto"; |
| 155 | |
| 156 | /* To be used by skip_prologue. */ |
| 157 | |
| 158 | struct rs6000_framedata |
| 159 | { |
| 160 | int offset; /* total size of frame --- the distance |
| 161 | by which we decrement sp to allocate |
| 162 | the frame */ |
| 163 | int saved_gpr; /* smallest # of saved gpr */ |
| 164 | unsigned int gpr_mask; /* Each bit is an individual saved GPR. */ |
| 165 | int saved_fpr; /* smallest # of saved fpr */ |
| 166 | int saved_vr; /* smallest # of saved vr */ |
| 167 | int saved_ev; /* smallest # of saved ev */ |
| 168 | int alloca_reg; /* alloca register number (frame ptr) */ |
| 169 | char frameless; /* true if frameless functions. */ |
| 170 | char nosavedpc; /* true if pc not saved. */ |
| 171 | char used_bl; /* true if link register clobbered */ |
| 172 | int gpr_offset; /* offset of saved gprs from prev sp */ |
| 173 | int fpr_offset; /* offset of saved fprs from prev sp */ |
| 174 | int vr_offset; /* offset of saved vrs from prev sp */ |
| 175 | int ev_offset; /* offset of saved evs from prev sp */ |
| 176 | int lr_offset; /* offset of saved lr */ |
| 177 | int lr_register; /* register of saved lr, if trustworthy */ |
| 178 | int cr_offset; /* offset of saved cr */ |
| 179 | int vrsave_offset; /* offset of saved vrsave register */ |
| 180 | }; |
| 181 | |
| 182 | |
| 183 | /* Is REGNO a VSX register? Return 1 if so, 0 otherwise. */ |
| 184 | int |
| 185 | vsx_register_p (struct gdbarch *gdbarch, int regno) |
| 186 | { |
| 187 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 188 | if (tdep->ppc_vsr0_regnum < 0) |
| 189 | return 0; |
| 190 | else |
| 191 | return (regno >= tdep->ppc_vsr0_upper_regnum && regno |
| 192 | <= tdep->ppc_vsr0_upper_regnum + 31); |
| 193 | } |
| 194 | |
| 195 | /* Is REGNO an AltiVec register? Return 1 if so, 0 otherwise. */ |
| 196 | int |
| 197 | altivec_register_p (struct gdbarch *gdbarch, int regno) |
| 198 | { |
| 199 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 200 | if (tdep->ppc_vr0_regnum < 0 || tdep->ppc_vrsave_regnum < 0) |
| 201 | return 0; |
| 202 | else |
| 203 | return (regno >= tdep->ppc_vr0_regnum && regno <= tdep->ppc_vrsave_regnum); |
| 204 | } |
| 205 | |
| 206 | |
| 207 | /* Return true if REGNO is an SPE register, false otherwise. */ |
| 208 | int |
| 209 | spe_register_p (struct gdbarch *gdbarch, int regno) |
| 210 | { |
| 211 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 212 | |
| 213 | /* Is it a reference to EV0 -- EV31, and do we have those? */ |
| 214 | if (IS_SPE_PSEUDOREG (tdep, regno)) |
| 215 | return 1; |
| 216 | |
| 217 | /* Is it a reference to one of the raw upper GPR halves? */ |
| 218 | if (tdep->ppc_ev0_upper_regnum >= 0 |
| 219 | && tdep->ppc_ev0_upper_regnum <= regno |
| 220 | && regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs) |
| 221 | return 1; |
| 222 | |
| 223 | /* Is it a reference to the 64-bit accumulator, and do we have that? */ |
| 224 | if (tdep->ppc_acc_regnum >= 0 |
| 225 | && tdep->ppc_acc_regnum == regno) |
| 226 | return 1; |
| 227 | |
| 228 | /* Is it a reference to the SPE floating-point status and control register, |
| 229 | and do we have that? */ |
| 230 | if (tdep->ppc_spefscr_regnum >= 0 |
| 231 | && tdep->ppc_spefscr_regnum == regno) |
| 232 | return 1; |
| 233 | |
| 234 | return 0; |
| 235 | } |
| 236 | |
| 237 | |
| 238 | /* Return non-zero if the architecture described by GDBARCH has |
| 239 | floating-point registers (f0 --- f31 and fpscr). */ |
| 240 | int |
| 241 | ppc_floating_point_unit_p (struct gdbarch *gdbarch) |
| 242 | { |
| 243 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 244 | |
| 245 | return (tdep->ppc_fp0_regnum >= 0 |
| 246 | && tdep->ppc_fpscr_regnum >= 0); |
| 247 | } |
| 248 | |
| 249 | /* Return non-zero if the architecture described by GDBARCH has |
| 250 | Altivec registers (vr0 --- vr31, vrsave and vscr). */ |
| 251 | int |
| 252 | ppc_altivec_support_p (struct gdbarch *gdbarch) |
| 253 | { |
| 254 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 255 | |
| 256 | return (tdep->ppc_vr0_regnum >= 0 |
| 257 | && tdep->ppc_vrsave_regnum >= 0); |
| 258 | } |
| 259 | |
| 260 | /* Check that TABLE[GDB_REGNO] is not already initialized, and then |
| 261 | set it to SIM_REGNO. |
| 262 | |
| 263 | This is a helper function for init_sim_regno_table, constructing |
| 264 | the table mapping GDB register numbers to sim register numbers; we |
| 265 | initialize every element in that table to -1 before we start |
| 266 | filling it in. */ |
| 267 | static void |
| 268 | set_sim_regno (int *table, int gdb_regno, int sim_regno) |
| 269 | { |
| 270 | /* Make sure we don't try to assign any given GDB register a sim |
| 271 | register number more than once. */ |
| 272 | gdb_assert (table[gdb_regno] == -1); |
| 273 | table[gdb_regno] = sim_regno; |
| 274 | } |
| 275 | |
| 276 | |
| 277 | /* Initialize ARCH->tdep->sim_regno, the table mapping GDB register |
| 278 | numbers to simulator register numbers, based on the values placed |
| 279 | in the ARCH->tdep->ppc_foo_regnum members. */ |
| 280 | static void |
| 281 | init_sim_regno_table (struct gdbarch *arch) |
| 282 | { |
| 283 | struct gdbarch_tdep *tdep = gdbarch_tdep (arch); |
| 284 | int total_regs = gdbarch_num_regs (arch); |
| 285 | int *sim_regno = GDBARCH_OBSTACK_CALLOC (arch, total_regs, int); |
| 286 | int i; |
| 287 | static const char *const segment_regs[] = { |
| 288 | "sr0", "sr1", "sr2", "sr3", "sr4", "sr5", "sr6", "sr7", |
| 289 | "sr8", "sr9", "sr10", "sr11", "sr12", "sr13", "sr14", "sr15" |
| 290 | }; |
| 291 | |
| 292 | /* Presume that all registers not explicitly mentioned below are |
| 293 | unavailable from the sim. */ |
| 294 | for (i = 0; i < total_regs; i++) |
| 295 | sim_regno[i] = -1; |
| 296 | |
| 297 | /* General-purpose registers. */ |
| 298 | for (i = 0; i < ppc_num_gprs; i++) |
| 299 | set_sim_regno (sim_regno, tdep->ppc_gp0_regnum + i, sim_ppc_r0_regnum + i); |
| 300 | |
| 301 | /* Floating-point registers. */ |
| 302 | if (tdep->ppc_fp0_regnum >= 0) |
| 303 | for (i = 0; i < ppc_num_fprs; i++) |
| 304 | set_sim_regno (sim_regno, |
| 305 | tdep->ppc_fp0_regnum + i, |
| 306 | sim_ppc_f0_regnum + i); |
| 307 | if (tdep->ppc_fpscr_regnum >= 0) |
| 308 | set_sim_regno (sim_regno, tdep->ppc_fpscr_regnum, sim_ppc_fpscr_regnum); |
| 309 | |
| 310 | set_sim_regno (sim_regno, gdbarch_pc_regnum (arch), sim_ppc_pc_regnum); |
| 311 | set_sim_regno (sim_regno, tdep->ppc_ps_regnum, sim_ppc_ps_regnum); |
| 312 | set_sim_regno (sim_regno, tdep->ppc_cr_regnum, sim_ppc_cr_regnum); |
| 313 | |
| 314 | /* Segment registers. */ |
| 315 | for (i = 0; i < ppc_num_srs; i++) |
| 316 | { |
| 317 | int gdb_regno; |
| 318 | |
| 319 | gdb_regno = user_reg_map_name_to_regnum (arch, segment_regs[i], -1); |
| 320 | if (gdb_regno >= 0) |
| 321 | set_sim_regno (sim_regno, gdb_regno, sim_ppc_sr0_regnum + i); |
| 322 | } |
| 323 | |
| 324 | /* Altivec registers. */ |
| 325 | if (tdep->ppc_vr0_regnum >= 0) |
| 326 | { |
| 327 | for (i = 0; i < ppc_num_vrs; i++) |
| 328 | set_sim_regno (sim_regno, |
| 329 | tdep->ppc_vr0_regnum + i, |
| 330 | sim_ppc_vr0_regnum + i); |
| 331 | |
| 332 | /* FIXME: jimb/2004-07-15: when we have tdep->ppc_vscr_regnum, |
| 333 | we can treat this more like the other cases. */ |
| 334 | set_sim_regno (sim_regno, |
| 335 | tdep->ppc_vr0_regnum + ppc_num_vrs, |
| 336 | sim_ppc_vscr_regnum); |
| 337 | } |
| 338 | /* vsave is a special-purpose register, so the code below handles it. */ |
| 339 | |
| 340 | /* SPE APU (E500) registers. */ |
| 341 | if (tdep->ppc_ev0_upper_regnum >= 0) |
| 342 | for (i = 0; i < ppc_num_gprs; i++) |
| 343 | set_sim_regno (sim_regno, |
| 344 | tdep->ppc_ev0_upper_regnum + i, |
| 345 | sim_ppc_rh0_regnum + i); |
| 346 | if (tdep->ppc_acc_regnum >= 0) |
| 347 | set_sim_regno (sim_regno, tdep->ppc_acc_regnum, sim_ppc_acc_regnum); |
| 348 | /* spefscr is a special-purpose register, so the code below handles it. */ |
| 349 | |
| 350 | #ifdef WITH_PPC_SIM |
| 351 | /* Now handle all special-purpose registers. Verify that they |
| 352 | haven't mistakenly been assigned numbers by any of the above |
| 353 | code. */ |
| 354 | for (i = 0; i < sim_ppc_num_sprs; i++) |
| 355 | { |
| 356 | const char *spr_name = sim_spr_register_name (i); |
| 357 | int gdb_regno = -1; |
| 358 | |
| 359 | if (spr_name != NULL) |
| 360 | gdb_regno = user_reg_map_name_to_regnum (arch, spr_name, -1); |
| 361 | |
| 362 | if (gdb_regno != -1) |
| 363 | set_sim_regno (sim_regno, gdb_regno, sim_ppc_spr0_regnum + i); |
| 364 | } |
| 365 | #endif |
| 366 | |
| 367 | /* Drop the initialized array into place. */ |
| 368 | tdep->sim_regno = sim_regno; |
| 369 | } |
| 370 | |
| 371 | |
| 372 | /* Given a GDB register number REG, return the corresponding SIM |
| 373 | register number. */ |
| 374 | static int |
| 375 | rs6000_register_sim_regno (struct gdbarch *gdbarch, int reg) |
| 376 | { |
| 377 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 378 | int sim_regno; |
| 379 | |
| 380 | if (tdep->sim_regno == NULL) |
| 381 | init_sim_regno_table (gdbarch); |
| 382 | |
| 383 | gdb_assert (0 <= reg && reg <= gdbarch_num_cooked_regs (gdbarch)); |
| 384 | sim_regno = tdep->sim_regno[reg]; |
| 385 | |
| 386 | if (sim_regno >= 0) |
| 387 | return sim_regno; |
| 388 | else |
| 389 | return LEGACY_SIM_REGNO_IGNORE; |
| 390 | } |
| 391 | |
| 392 | \f |
| 393 | |
| 394 | /* Register set support functions. */ |
| 395 | |
| 396 | /* REGS + OFFSET contains register REGNUM in a field REGSIZE wide. |
| 397 | Write the register to REGCACHE. */ |
| 398 | |
| 399 | void |
| 400 | ppc_supply_reg (struct regcache *regcache, int regnum, |
| 401 | const gdb_byte *regs, size_t offset, int regsize) |
| 402 | { |
| 403 | if (regnum != -1 && offset != -1) |
| 404 | { |
| 405 | if (regsize > 4) |
| 406 | { |
| 407 | struct gdbarch *gdbarch = regcache->arch (); |
| 408 | int gdb_regsize = register_size (gdbarch, regnum); |
| 409 | if (gdb_regsize < regsize |
| 410 | && gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 411 | offset += regsize - gdb_regsize; |
| 412 | } |
| 413 | regcache->raw_supply (regnum, regs + offset); |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | /* Read register REGNUM from REGCACHE and store to REGS + OFFSET |
| 418 | in a field REGSIZE wide. Zero pad as necessary. */ |
| 419 | |
| 420 | void |
| 421 | ppc_collect_reg (const struct regcache *regcache, int regnum, |
| 422 | gdb_byte *regs, size_t offset, int regsize) |
| 423 | { |
| 424 | if (regnum != -1 && offset != -1) |
| 425 | { |
| 426 | if (regsize > 4) |
| 427 | { |
| 428 | struct gdbarch *gdbarch = regcache->arch (); |
| 429 | int gdb_regsize = register_size (gdbarch, regnum); |
| 430 | if (gdb_regsize < regsize) |
| 431 | { |
| 432 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 433 | { |
| 434 | memset (regs + offset, 0, regsize - gdb_regsize); |
| 435 | offset += regsize - gdb_regsize; |
| 436 | } |
| 437 | else |
| 438 | memset (regs + offset + regsize - gdb_regsize, 0, |
| 439 | regsize - gdb_regsize); |
| 440 | } |
| 441 | } |
| 442 | regcache->raw_collect (regnum, regs + offset); |
| 443 | } |
| 444 | } |
| 445 | |
| 446 | static int |
| 447 | ppc_greg_offset (struct gdbarch *gdbarch, |
| 448 | struct gdbarch_tdep *tdep, |
| 449 | const struct ppc_reg_offsets *offsets, |
| 450 | int regnum, |
| 451 | int *regsize) |
| 452 | { |
| 453 | *regsize = offsets->gpr_size; |
| 454 | if (regnum >= tdep->ppc_gp0_regnum |
| 455 | && regnum < tdep->ppc_gp0_regnum + ppc_num_gprs) |
| 456 | return (offsets->r0_offset |
| 457 | + (regnum - tdep->ppc_gp0_regnum) * offsets->gpr_size); |
| 458 | |
| 459 | if (regnum == gdbarch_pc_regnum (gdbarch)) |
| 460 | return offsets->pc_offset; |
| 461 | |
| 462 | if (regnum == tdep->ppc_ps_regnum) |
| 463 | return offsets->ps_offset; |
| 464 | |
| 465 | if (regnum == tdep->ppc_lr_regnum) |
| 466 | return offsets->lr_offset; |
| 467 | |
| 468 | if (regnum == tdep->ppc_ctr_regnum) |
| 469 | return offsets->ctr_offset; |
| 470 | |
| 471 | *regsize = offsets->xr_size; |
| 472 | if (regnum == tdep->ppc_cr_regnum) |
| 473 | return offsets->cr_offset; |
| 474 | |
| 475 | if (regnum == tdep->ppc_xer_regnum) |
| 476 | return offsets->xer_offset; |
| 477 | |
| 478 | if (regnum == tdep->ppc_mq_regnum) |
| 479 | return offsets->mq_offset; |
| 480 | |
| 481 | return -1; |
| 482 | } |
| 483 | |
| 484 | static int |
| 485 | ppc_fpreg_offset (struct gdbarch_tdep *tdep, |
| 486 | const struct ppc_reg_offsets *offsets, |
| 487 | int regnum) |
| 488 | { |
| 489 | if (regnum >= tdep->ppc_fp0_regnum |
| 490 | && regnum < tdep->ppc_fp0_regnum + ppc_num_fprs) |
| 491 | return offsets->f0_offset + (regnum - tdep->ppc_fp0_regnum) * 8; |
| 492 | |
| 493 | if (regnum == tdep->ppc_fpscr_regnum) |
| 494 | return offsets->fpscr_offset; |
| 495 | |
| 496 | return -1; |
| 497 | } |
| 498 | |
| 499 | /* Supply register REGNUM in the general-purpose register set REGSET |
| 500 | from the buffer specified by GREGS and LEN to register cache |
| 501 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| 502 | |
| 503 | void |
| 504 | ppc_supply_gregset (const struct regset *regset, struct regcache *regcache, |
| 505 | int regnum, const void *gregs, size_t len) |
| 506 | { |
| 507 | struct gdbarch *gdbarch = regcache->arch (); |
| 508 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 509 | const struct ppc_reg_offsets *offsets |
| 510 | = (const struct ppc_reg_offsets *) regset->regmap; |
| 511 | size_t offset; |
| 512 | int regsize; |
| 513 | |
| 514 | if (regnum == -1) |
| 515 | { |
| 516 | int i; |
| 517 | int gpr_size = offsets->gpr_size; |
| 518 | |
| 519 | for (i = tdep->ppc_gp0_regnum, offset = offsets->r0_offset; |
| 520 | i < tdep->ppc_gp0_regnum + ppc_num_gprs; |
| 521 | i++, offset += gpr_size) |
| 522 | ppc_supply_reg (regcache, i, (const gdb_byte *) gregs, offset, |
| 523 | gpr_size); |
| 524 | |
| 525 | ppc_supply_reg (regcache, gdbarch_pc_regnum (gdbarch), |
| 526 | (const gdb_byte *) gregs, offsets->pc_offset, gpr_size); |
| 527 | ppc_supply_reg (regcache, tdep->ppc_ps_regnum, |
| 528 | (const gdb_byte *) gregs, offsets->ps_offset, gpr_size); |
| 529 | ppc_supply_reg (regcache, tdep->ppc_lr_regnum, |
| 530 | (const gdb_byte *) gregs, offsets->lr_offset, gpr_size); |
| 531 | ppc_supply_reg (regcache, tdep->ppc_ctr_regnum, |
| 532 | (const gdb_byte *) gregs, offsets->ctr_offset, gpr_size); |
| 533 | ppc_supply_reg (regcache, tdep->ppc_cr_regnum, |
| 534 | (const gdb_byte *) gregs, offsets->cr_offset, |
| 535 | offsets->xr_size); |
| 536 | ppc_supply_reg (regcache, tdep->ppc_xer_regnum, |
| 537 | (const gdb_byte *) gregs, offsets->xer_offset, |
| 538 | offsets->xr_size); |
| 539 | ppc_supply_reg (regcache, tdep->ppc_mq_regnum, |
| 540 | (const gdb_byte *) gregs, offsets->mq_offset, |
| 541 | offsets->xr_size); |
| 542 | return; |
| 543 | } |
| 544 | |
| 545 | offset = ppc_greg_offset (gdbarch, tdep, offsets, regnum, ®size); |
| 546 | ppc_supply_reg (regcache, regnum, (const gdb_byte *) gregs, offset, regsize); |
| 547 | } |
| 548 | |
| 549 | /* Supply register REGNUM in the floating-point register set REGSET |
| 550 | from the buffer specified by FPREGS and LEN to register cache |
| 551 | REGCACHE. If REGNUM is -1, do this for all registers in REGSET. */ |
| 552 | |
| 553 | void |
| 554 | ppc_supply_fpregset (const struct regset *regset, struct regcache *regcache, |
| 555 | int regnum, const void *fpregs, size_t len) |
| 556 | { |
| 557 | struct gdbarch *gdbarch = regcache->arch (); |
| 558 | struct gdbarch_tdep *tdep; |
| 559 | const struct ppc_reg_offsets *offsets; |
| 560 | size_t offset; |
| 561 | |
| 562 | if (!ppc_floating_point_unit_p (gdbarch)) |
| 563 | return; |
| 564 | |
| 565 | tdep = gdbarch_tdep (gdbarch); |
| 566 | offsets = (const struct ppc_reg_offsets *) regset->regmap; |
| 567 | if (regnum == -1) |
| 568 | { |
| 569 | int i; |
| 570 | |
| 571 | for (i = tdep->ppc_fp0_regnum, offset = offsets->f0_offset; |
| 572 | i < tdep->ppc_fp0_regnum + ppc_num_fprs; |
| 573 | i++, offset += 8) |
| 574 | ppc_supply_reg (regcache, i, (const gdb_byte *) fpregs, offset, 8); |
| 575 | |
| 576 | ppc_supply_reg (regcache, tdep->ppc_fpscr_regnum, |
| 577 | (const gdb_byte *) fpregs, offsets->fpscr_offset, |
| 578 | offsets->fpscr_size); |
| 579 | return; |
| 580 | } |
| 581 | |
| 582 | offset = ppc_fpreg_offset (tdep, offsets, regnum); |
| 583 | ppc_supply_reg (regcache, regnum, (const gdb_byte *) fpregs, offset, |
| 584 | regnum == tdep->ppc_fpscr_regnum ? offsets->fpscr_size : 8); |
| 585 | } |
| 586 | |
| 587 | /* Collect register REGNUM in the general-purpose register set |
| 588 | REGSET from register cache REGCACHE into the buffer specified by |
| 589 | GREGS and LEN. If REGNUM is -1, do this for all registers in |
| 590 | REGSET. */ |
| 591 | |
| 592 | void |
| 593 | ppc_collect_gregset (const struct regset *regset, |
| 594 | const struct regcache *regcache, |
| 595 | int regnum, void *gregs, size_t len) |
| 596 | { |
| 597 | struct gdbarch *gdbarch = regcache->arch (); |
| 598 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 599 | const struct ppc_reg_offsets *offsets |
| 600 | = (const struct ppc_reg_offsets *) regset->regmap; |
| 601 | size_t offset; |
| 602 | int regsize; |
| 603 | |
| 604 | if (regnum == -1) |
| 605 | { |
| 606 | int i; |
| 607 | int gpr_size = offsets->gpr_size; |
| 608 | |
| 609 | for (i = tdep->ppc_gp0_regnum, offset = offsets->r0_offset; |
| 610 | i < tdep->ppc_gp0_regnum + ppc_num_gprs; |
| 611 | i++, offset += gpr_size) |
| 612 | ppc_collect_reg (regcache, i, (gdb_byte *) gregs, offset, gpr_size); |
| 613 | |
| 614 | ppc_collect_reg (regcache, gdbarch_pc_regnum (gdbarch), |
| 615 | (gdb_byte *) gregs, offsets->pc_offset, gpr_size); |
| 616 | ppc_collect_reg (regcache, tdep->ppc_ps_regnum, |
| 617 | (gdb_byte *) gregs, offsets->ps_offset, gpr_size); |
| 618 | ppc_collect_reg (regcache, tdep->ppc_lr_regnum, |
| 619 | (gdb_byte *) gregs, offsets->lr_offset, gpr_size); |
| 620 | ppc_collect_reg (regcache, tdep->ppc_ctr_regnum, |
| 621 | (gdb_byte *) gregs, offsets->ctr_offset, gpr_size); |
| 622 | ppc_collect_reg (regcache, tdep->ppc_cr_regnum, |
| 623 | (gdb_byte *) gregs, offsets->cr_offset, |
| 624 | offsets->xr_size); |
| 625 | ppc_collect_reg (regcache, tdep->ppc_xer_regnum, |
| 626 | (gdb_byte *) gregs, offsets->xer_offset, |
| 627 | offsets->xr_size); |
| 628 | ppc_collect_reg (regcache, tdep->ppc_mq_regnum, |
| 629 | (gdb_byte *) gregs, offsets->mq_offset, |
| 630 | offsets->xr_size); |
| 631 | return; |
| 632 | } |
| 633 | |
| 634 | offset = ppc_greg_offset (gdbarch, tdep, offsets, regnum, ®size); |
| 635 | ppc_collect_reg (regcache, regnum, (gdb_byte *) gregs, offset, regsize); |
| 636 | } |
| 637 | |
| 638 | /* Collect register REGNUM in the floating-point register set |
| 639 | REGSET from register cache REGCACHE into the buffer specified by |
| 640 | FPREGS and LEN. If REGNUM is -1, do this for all registers in |
| 641 | REGSET. */ |
| 642 | |
| 643 | void |
| 644 | ppc_collect_fpregset (const struct regset *regset, |
| 645 | const struct regcache *regcache, |
| 646 | int regnum, void *fpregs, size_t len) |
| 647 | { |
| 648 | struct gdbarch *gdbarch = regcache->arch (); |
| 649 | struct gdbarch_tdep *tdep; |
| 650 | const struct ppc_reg_offsets *offsets; |
| 651 | size_t offset; |
| 652 | |
| 653 | if (!ppc_floating_point_unit_p (gdbarch)) |
| 654 | return; |
| 655 | |
| 656 | tdep = gdbarch_tdep (gdbarch); |
| 657 | offsets = (const struct ppc_reg_offsets *) regset->regmap; |
| 658 | if (regnum == -1) |
| 659 | { |
| 660 | int i; |
| 661 | |
| 662 | for (i = tdep->ppc_fp0_regnum, offset = offsets->f0_offset; |
| 663 | i < tdep->ppc_fp0_regnum + ppc_num_fprs; |
| 664 | i++, offset += 8) |
| 665 | ppc_collect_reg (regcache, i, (gdb_byte *) fpregs, offset, 8); |
| 666 | |
| 667 | ppc_collect_reg (regcache, tdep->ppc_fpscr_regnum, |
| 668 | (gdb_byte *) fpregs, offsets->fpscr_offset, |
| 669 | offsets->fpscr_size); |
| 670 | return; |
| 671 | } |
| 672 | |
| 673 | offset = ppc_fpreg_offset (tdep, offsets, regnum); |
| 674 | ppc_collect_reg (regcache, regnum, (gdb_byte *) fpregs, offset, |
| 675 | regnum == tdep->ppc_fpscr_regnum ? offsets->fpscr_size : 8); |
| 676 | } |
| 677 | |
| 678 | static int |
| 679 | insn_changes_sp_or_jumps (unsigned long insn) |
| 680 | { |
| 681 | int opcode = (insn >> 26) & 0x03f; |
| 682 | int sd = (insn >> 21) & 0x01f; |
| 683 | int a = (insn >> 16) & 0x01f; |
| 684 | int subcode = (insn >> 1) & 0x3ff; |
| 685 | |
| 686 | /* Changes the stack pointer. */ |
| 687 | |
| 688 | /* NOTE: There are many ways to change the value of a given register. |
| 689 | The ways below are those used when the register is R1, the SP, |
| 690 | in a funtion's epilogue. */ |
| 691 | |
| 692 | if (opcode == 31 && subcode == 444 && a == 1) |
| 693 | return 1; /* mr R1,Rn */ |
| 694 | if (opcode == 14 && sd == 1) |
| 695 | return 1; /* addi R1,Rn,simm */ |
| 696 | if (opcode == 58 && sd == 1) |
| 697 | return 1; /* ld R1,ds(Rn) */ |
| 698 | |
| 699 | /* Transfers control. */ |
| 700 | |
| 701 | if (opcode == 18) |
| 702 | return 1; /* b */ |
| 703 | if (opcode == 16) |
| 704 | return 1; /* bc */ |
| 705 | if (opcode == 19 && subcode == 16) |
| 706 | return 1; /* bclr */ |
| 707 | if (opcode == 19 && subcode == 528) |
| 708 | return 1; /* bcctr */ |
| 709 | |
| 710 | return 0; |
| 711 | } |
| 712 | |
| 713 | /* Return true if we are in the function's epilogue, i.e. after the |
| 714 | instruction that destroyed the function's stack frame. |
| 715 | |
| 716 | 1) scan forward from the point of execution: |
| 717 | a) If you find an instruction that modifies the stack pointer |
| 718 | or transfers control (except a return), execution is not in |
| 719 | an epilogue, return. |
| 720 | b) Stop scanning if you find a return instruction or reach the |
| 721 | end of the function or reach the hard limit for the size of |
| 722 | an epilogue. |
| 723 | 2) scan backward from the point of execution: |
| 724 | a) If you find an instruction that modifies the stack pointer, |
| 725 | execution *is* in an epilogue, return. |
| 726 | b) Stop scanning if you reach an instruction that transfers |
| 727 | control or the beginning of the function or reach the hard |
| 728 | limit for the size of an epilogue. */ |
| 729 | |
| 730 | static int |
| 731 | rs6000_in_function_epilogue_frame_p (struct frame_info *curfrm, |
| 732 | struct gdbarch *gdbarch, CORE_ADDR pc) |
| 733 | { |
| 734 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 735 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 736 | bfd_byte insn_buf[PPC_INSN_SIZE]; |
| 737 | CORE_ADDR scan_pc, func_start, func_end, epilogue_start, epilogue_end; |
| 738 | unsigned long insn; |
| 739 | |
| 740 | /* Find the search limits based on function boundaries and hard limit. */ |
| 741 | |
| 742 | if (!find_pc_partial_function (pc, NULL, &func_start, &func_end)) |
| 743 | return 0; |
| 744 | |
| 745 | epilogue_start = pc - PPC_MAX_EPILOGUE_INSTRUCTIONS * PPC_INSN_SIZE; |
| 746 | if (epilogue_start < func_start) epilogue_start = func_start; |
| 747 | |
| 748 | epilogue_end = pc + PPC_MAX_EPILOGUE_INSTRUCTIONS * PPC_INSN_SIZE; |
| 749 | if (epilogue_end > func_end) epilogue_end = func_end; |
| 750 | |
| 751 | /* Scan forward until next 'blr'. */ |
| 752 | |
| 753 | for (scan_pc = pc; scan_pc < epilogue_end; scan_pc += PPC_INSN_SIZE) |
| 754 | { |
| 755 | if (!safe_frame_unwind_memory (curfrm, scan_pc, insn_buf, PPC_INSN_SIZE)) |
| 756 | return 0; |
| 757 | insn = extract_unsigned_integer (insn_buf, PPC_INSN_SIZE, byte_order); |
| 758 | if (insn == 0x4e800020) |
| 759 | break; |
| 760 | /* Assume a bctr is a tail call unless it points strictly within |
| 761 | this function. */ |
| 762 | if (insn == 0x4e800420) |
| 763 | { |
| 764 | CORE_ADDR ctr = get_frame_register_unsigned (curfrm, |
| 765 | tdep->ppc_ctr_regnum); |
| 766 | if (ctr > func_start && ctr < func_end) |
| 767 | return 0; |
| 768 | else |
| 769 | break; |
| 770 | } |
| 771 | if (insn_changes_sp_or_jumps (insn)) |
| 772 | return 0; |
| 773 | } |
| 774 | |
| 775 | /* Scan backward until adjustment to stack pointer (R1). */ |
| 776 | |
| 777 | for (scan_pc = pc - PPC_INSN_SIZE; |
| 778 | scan_pc >= epilogue_start; |
| 779 | scan_pc -= PPC_INSN_SIZE) |
| 780 | { |
| 781 | if (!safe_frame_unwind_memory (curfrm, scan_pc, insn_buf, PPC_INSN_SIZE)) |
| 782 | return 0; |
| 783 | insn = extract_unsigned_integer (insn_buf, PPC_INSN_SIZE, byte_order); |
| 784 | if (insn_changes_sp_or_jumps (insn)) |
| 785 | return 1; |
| 786 | } |
| 787 | |
| 788 | return 0; |
| 789 | } |
| 790 | |
| 791 | /* Implement the stack_frame_destroyed_p gdbarch method. */ |
| 792 | |
| 793 | static int |
| 794 | rs6000_stack_frame_destroyed_p (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 795 | { |
| 796 | return rs6000_in_function_epilogue_frame_p (get_current_frame (), |
| 797 | gdbarch, pc); |
| 798 | } |
| 799 | |
| 800 | /* Get the ith function argument for the current function. */ |
| 801 | static CORE_ADDR |
| 802 | rs6000_fetch_pointer_argument (struct frame_info *frame, int argi, |
| 803 | struct type *type) |
| 804 | { |
| 805 | return get_frame_register_unsigned (frame, 3 + argi); |
| 806 | } |
| 807 | |
| 808 | /* Sequence of bytes for breakpoint instruction. */ |
| 809 | |
| 810 | constexpr gdb_byte big_breakpoint[] = { 0x7d, 0x82, 0x10, 0x08 }; |
| 811 | constexpr gdb_byte little_breakpoint[] = { 0x08, 0x10, 0x82, 0x7d }; |
| 812 | |
| 813 | typedef BP_MANIPULATION_ENDIAN (little_breakpoint, big_breakpoint) |
| 814 | rs6000_breakpoint; |
| 815 | |
| 816 | /* Instruction masks for displaced stepping. */ |
| 817 | #define BRANCH_MASK 0xfc000000 |
| 818 | #define BP_MASK 0xFC0007FE |
| 819 | #define B_INSN 0x48000000 |
| 820 | #define BC_INSN 0x40000000 |
| 821 | #define BXL_INSN 0x4c000000 |
| 822 | #define BP_INSN 0x7C000008 |
| 823 | |
| 824 | /* Instruction masks used during single-stepping of atomic |
| 825 | sequences. */ |
| 826 | #define LOAD_AND_RESERVE_MASK 0xfc0007fe |
| 827 | #define LWARX_INSTRUCTION 0x7c000028 |
| 828 | #define LDARX_INSTRUCTION 0x7c0000A8 |
| 829 | #define LBARX_INSTRUCTION 0x7c000068 |
| 830 | #define LHARX_INSTRUCTION 0x7c0000e8 |
| 831 | #define LQARX_INSTRUCTION 0x7c000228 |
| 832 | #define STORE_CONDITIONAL_MASK 0xfc0007ff |
| 833 | #define STWCX_INSTRUCTION 0x7c00012d |
| 834 | #define STDCX_INSTRUCTION 0x7c0001ad |
| 835 | #define STBCX_INSTRUCTION 0x7c00056d |
| 836 | #define STHCX_INSTRUCTION 0x7c0005ad |
| 837 | #define STQCX_INSTRUCTION 0x7c00016d |
| 838 | |
| 839 | /* Check if insn is one of the Load And Reserve instructions used for atomic |
| 840 | sequences. */ |
| 841 | #define IS_LOAD_AND_RESERVE_INSN(insn) ((insn & LOAD_AND_RESERVE_MASK) == LWARX_INSTRUCTION \ |
| 842 | || (insn & LOAD_AND_RESERVE_MASK) == LDARX_INSTRUCTION \ |
| 843 | || (insn & LOAD_AND_RESERVE_MASK) == LBARX_INSTRUCTION \ |
| 844 | || (insn & LOAD_AND_RESERVE_MASK) == LHARX_INSTRUCTION \ |
| 845 | || (insn & LOAD_AND_RESERVE_MASK) == LQARX_INSTRUCTION) |
| 846 | /* Check if insn is one of the Store Conditional instructions used for atomic |
| 847 | sequences. */ |
| 848 | #define IS_STORE_CONDITIONAL_INSN(insn) ((insn & STORE_CONDITIONAL_MASK) == STWCX_INSTRUCTION \ |
| 849 | || (insn & STORE_CONDITIONAL_MASK) == STDCX_INSTRUCTION \ |
| 850 | || (insn & STORE_CONDITIONAL_MASK) == STBCX_INSTRUCTION \ |
| 851 | || (insn & STORE_CONDITIONAL_MASK) == STHCX_INSTRUCTION \ |
| 852 | || (insn & STORE_CONDITIONAL_MASK) == STQCX_INSTRUCTION) |
| 853 | |
| 854 | typedef buf_displaced_step_closure ppc_displaced_step_closure; |
| 855 | |
| 856 | /* We can't displaced step atomic sequences. */ |
| 857 | |
| 858 | static struct displaced_step_closure * |
| 859 | ppc_displaced_step_copy_insn (struct gdbarch *gdbarch, |
| 860 | CORE_ADDR from, CORE_ADDR to, |
| 861 | struct regcache *regs) |
| 862 | { |
| 863 | size_t len = gdbarch_max_insn_length (gdbarch); |
| 864 | std::unique_ptr<ppc_displaced_step_closure> closure |
| 865 | (new ppc_displaced_step_closure (len)); |
| 866 | gdb_byte *buf = closure->buf.data (); |
| 867 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 868 | int insn; |
| 869 | |
| 870 | read_memory (from, buf, len); |
| 871 | |
| 872 | insn = extract_signed_integer (buf, PPC_INSN_SIZE, byte_order); |
| 873 | |
| 874 | /* Assume all atomic sequences start with a Load and Reserve instruction. */ |
| 875 | if (IS_LOAD_AND_RESERVE_INSN (insn)) |
| 876 | { |
| 877 | if (debug_displaced) |
| 878 | { |
| 879 | fprintf_unfiltered (gdb_stdlog, |
| 880 | "displaced: can't displaced step " |
| 881 | "atomic sequence at %s\n", |
| 882 | paddress (gdbarch, from)); |
| 883 | } |
| 884 | |
| 885 | return NULL; |
| 886 | } |
| 887 | |
| 888 | write_memory (to, buf, len); |
| 889 | |
| 890 | if (debug_displaced) |
| 891 | { |
| 892 | fprintf_unfiltered (gdb_stdlog, "displaced: copy %s->%s: ", |
| 893 | paddress (gdbarch, from), paddress (gdbarch, to)); |
| 894 | displaced_step_dump_bytes (gdb_stdlog, buf, len); |
| 895 | } |
| 896 | |
| 897 | return closure.release (); |
| 898 | } |
| 899 | |
| 900 | /* Fix up the state of registers and memory after having single-stepped |
| 901 | a displaced instruction. */ |
| 902 | static void |
| 903 | ppc_displaced_step_fixup (struct gdbarch *gdbarch, |
| 904 | struct displaced_step_closure *closure_, |
| 905 | CORE_ADDR from, CORE_ADDR to, |
| 906 | struct regcache *regs) |
| 907 | { |
| 908 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 909 | /* Our closure is a copy of the instruction. */ |
| 910 | ppc_displaced_step_closure *closure = (ppc_displaced_step_closure *) closure_; |
| 911 | ULONGEST insn = extract_unsigned_integer (closure->buf.data (), |
| 912 | PPC_INSN_SIZE, byte_order); |
| 913 | ULONGEST opcode = 0; |
| 914 | /* Offset for non PC-relative instructions. */ |
| 915 | LONGEST offset = PPC_INSN_SIZE; |
| 916 | |
| 917 | opcode = insn & BRANCH_MASK; |
| 918 | |
| 919 | if (debug_displaced) |
| 920 | fprintf_unfiltered (gdb_stdlog, |
| 921 | "displaced: (ppc) fixup (%s, %s)\n", |
| 922 | paddress (gdbarch, from), paddress (gdbarch, to)); |
| 923 | |
| 924 | |
| 925 | /* Handle PC-relative branch instructions. */ |
| 926 | if (opcode == B_INSN || opcode == BC_INSN || opcode == BXL_INSN) |
| 927 | { |
| 928 | ULONGEST current_pc; |
| 929 | |
| 930 | /* Read the current PC value after the instruction has been executed |
| 931 | in a displaced location. Calculate the offset to be applied to the |
| 932 | original PC value before the displaced stepping. */ |
| 933 | regcache_cooked_read_unsigned (regs, gdbarch_pc_regnum (gdbarch), |
| 934 | ¤t_pc); |
| 935 | offset = current_pc - to; |
| 936 | |
| 937 | if (opcode != BXL_INSN) |
| 938 | { |
| 939 | /* Check for AA bit indicating whether this is an absolute |
| 940 | addressing or PC-relative (1: absolute, 0: relative). */ |
| 941 | if (!(insn & 0x2)) |
| 942 | { |
| 943 | /* PC-relative addressing is being used in the branch. */ |
| 944 | if (debug_displaced) |
| 945 | fprintf_unfiltered |
| 946 | (gdb_stdlog, |
| 947 | "displaced: (ppc) branch instruction: %s\n" |
| 948 | "displaced: (ppc) adjusted PC from %s to %s\n", |
| 949 | paddress (gdbarch, insn), paddress (gdbarch, current_pc), |
| 950 | paddress (gdbarch, from + offset)); |
| 951 | |
| 952 | regcache_cooked_write_unsigned (regs, |
| 953 | gdbarch_pc_regnum (gdbarch), |
| 954 | from + offset); |
| 955 | } |
| 956 | } |
| 957 | else |
| 958 | { |
| 959 | /* If we're here, it means we have a branch to LR or CTR. If the |
| 960 | branch was taken, the offset is probably greater than 4 (the next |
| 961 | instruction), so it's safe to assume that an offset of 4 means we |
| 962 | did not take the branch. */ |
| 963 | if (offset == PPC_INSN_SIZE) |
| 964 | regcache_cooked_write_unsigned (regs, gdbarch_pc_regnum (gdbarch), |
| 965 | from + PPC_INSN_SIZE); |
| 966 | } |
| 967 | |
| 968 | /* Check for LK bit indicating whether we should set the link |
| 969 | register to point to the next instruction |
| 970 | (1: Set, 0: Don't set). */ |
| 971 | if (insn & 0x1) |
| 972 | { |
| 973 | /* Link register needs to be set to the next instruction's PC. */ |
| 974 | regcache_cooked_write_unsigned (regs, |
| 975 | gdbarch_tdep (gdbarch)->ppc_lr_regnum, |
| 976 | from + PPC_INSN_SIZE); |
| 977 | if (debug_displaced) |
| 978 | fprintf_unfiltered (gdb_stdlog, |
| 979 | "displaced: (ppc) adjusted LR to %s\n", |
| 980 | paddress (gdbarch, from + PPC_INSN_SIZE)); |
| 981 | |
| 982 | } |
| 983 | } |
| 984 | /* Check for breakpoints in the inferior. If we've found one, place the PC |
| 985 | right at the breakpoint instruction. */ |
| 986 | else if ((insn & BP_MASK) == BP_INSN) |
| 987 | regcache_cooked_write_unsigned (regs, gdbarch_pc_regnum (gdbarch), from); |
| 988 | else |
| 989 | /* Handle any other instructions that do not fit in the categories above. */ |
| 990 | regcache_cooked_write_unsigned (regs, gdbarch_pc_regnum (gdbarch), |
| 991 | from + offset); |
| 992 | } |
| 993 | |
| 994 | /* Always use hardware single-stepping to execute the |
| 995 | displaced instruction. */ |
| 996 | static int |
| 997 | ppc_displaced_step_hw_singlestep (struct gdbarch *gdbarch, |
| 998 | struct displaced_step_closure *closure) |
| 999 | { |
| 1000 | return 1; |
| 1001 | } |
| 1002 | |
| 1003 | /* Checks for an atomic sequence of instructions beginning with a |
| 1004 | Load And Reserve instruction and ending with a Store Conditional |
| 1005 | instruction. If such a sequence is found, attempt to step through it. |
| 1006 | A breakpoint is placed at the end of the sequence. */ |
| 1007 | std::vector<CORE_ADDR> |
| 1008 | ppc_deal_with_atomic_sequence (struct regcache *regcache) |
| 1009 | { |
| 1010 | struct gdbarch *gdbarch = regcache->arch (); |
| 1011 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1012 | CORE_ADDR pc = regcache_read_pc (regcache); |
| 1013 | CORE_ADDR breaks[2] = {CORE_ADDR_MAX, CORE_ADDR_MAX}; |
| 1014 | CORE_ADDR loc = pc; |
| 1015 | CORE_ADDR closing_insn; /* Instruction that closes the atomic sequence. */ |
| 1016 | int insn = read_memory_integer (loc, PPC_INSN_SIZE, byte_order); |
| 1017 | int insn_count; |
| 1018 | int index; |
| 1019 | int last_breakpoint = 0; /* Defaults to 0 (no breakpoints placed). */ |
| 1020 | const int atomic_sequence_length = 16; /* Instruction sequence length. */ |
| 1021 | int bc_insn_count = 0; /* Conditional branch instruction count. */ |
| 1022 | |
| 1023 | /* Assume all atomic sequences start with a Load And Reserve instruction. */ |
| 1024 | if (!IS_LOAD_AND_RESERVE_INSN (insn)) |
| 1025 | return {}; |
| 1026 | |
| 1027 | /* Assume that no atomic sequence is longer than "atomic_sequence_length" |
| 1028 | instructions. */ |
| 1029 | for (insn_count = 0; insn_count < atomic_sequence_length; ++insn_count) |
| 1030 | { |
| 1031 | loc += PPC_INSN_SIZE; |
| 1032 | insn = read_memory_integer (loc, PPC_INSN_SIZE, byte_order); |
| 1033 | |
| 1034 | /* Assume that there is at most one conditional branch in the atomic |
| 1035 | sequence. If a conditional branch is found, put a breakpoint in |
| 1036 | its destination address. */ |
| 1037 | if ((insn & BRANCH_MASK) == BC_INSN) |
| 1038 | { |
| 1039 | int immediate = ((insn & 0xfffc) ^ 0x8000) - 0x8000; |
| 1040 | int absolute = insn & 2; |
| 1041 | |
| 1042 | if (bc_insn_count >= 1) |
| 1043 | return {}; /* More than one conditional branch found, fallback |
| 1044 | to the standard single-step code. */ |
| 1045 | |
| 1046 | if (absolute) |
| 1047 | breaks[1] = immediate; |
| 1048 | else |
| 1049 | breaks[1] = loc + immediate; |
| 1050 | |
| 1051 | bc_insn_count++; |
| 1052 | last_breakpoint++; |
| 1053 | } |
| 1054 | |
| 1055 | if (IS_STORE_CONDITIONAL_INSN (insn)) |
| 1056 | break; |
| 1057 | } |
| 1058 | |
| 1059 | /* Assume that the atomic sequence ends with a Store Conditional |
| 1060 | instruction. */ |
| 1061 | if (!IS_STORE_CONDITIONAL_INSN (insn)) |
| 1062 | return {}; |
| 1063 | |
| 1064 | closing_insn = loc; |
| 1065 | loc += PPC_INSN_SIZE; |
| 1066 | |
| 1067 | /* Insert a breakpoint right after the end of the atomic sequence. */ |
| 1068 | breaks[0] = loc; |
| 1069 | |
| 1070 | /* Check for duplicated breakpoints. Check also for a breakpoint |
| 1071 | placed (branch instruction's destination) anywhere in sequence. */ |
| 1072 | if (last_breakpoint |
| 1073 | && (breaks[1] == breaks[0] |
| 1074 | || (breaks[1] >= pc && breaks[1] <= closing_insn))) |
| 1075 | last_breakpoint = 0; |
| 1076 | |
| 1077 | std::vector<CORE_ADDR> next_pcs; |
| 1078 | |
| 1079 | for (index = 0; index <= last_breakpoint; index++) |
| 1080 | next_pcs.push_back (breaks[index]); |
| 1081 | |
| 1082 | return next_pcs; |
| 1083 | } |
| 1084 | |
| 1085 | |
| 1086 | #define SIGNED_SHORT(x) \ |
| 1087 | ((sizeof (short) == 2) \ |
| 1088 | ? ((int)(short)(x)) \ |
| 1089 | : ((int)((((x) & 0xffff) ^ 0x8000) - 0x8000))) |
| 1090 | |
| 1091 | #define GET_SRC_REG(x) (((x) >> 21) & 0x1f) |
| 1092 | |
| 1093 | /* Limit the number of skipped non-prologue instructions, as the examining |
| 1094 | of the prologue is expensive. */ |
| 1095 | static int max_skip_non_prologue_insns = 10; |
| 1096 | |
| 1097 | /* Return nonzero if the given instruction OP can be part of the prologue |
| 1098 | of a function and saves a parameter on the stack. FRAMEP should be |
| 1099 | set if one of the previous instructions in the function has set the |
| 1100 | Frame Pointer. */ |
| 1101 | |
| 1102 | static int |
| 1103 | store_param_on_stack_p (unsigned long op, int framep, int *r0_contains_arg) |
| 1104 | { |
| 1105 | /* Move parameters from argument registers to temporary register. */ |
| 1106 | if ((op & 0xfc0007fe) == 0x7c000378) /* mr(.) Rx,Ry */ |
| 1107 | { |
| 1108 | /* Rx must be scratch register r0. */ |
| 1109 | const int rx_regno = (op >> 16) & 31; |
| 1110 | /* Ry: Only r3 - r10 are used for parameter passing. */ |
| 1111 | const int ry_regno = GET_SRC_REG (op); |
| 1112 | |
| 1113 | if (rx_regno == 0 && ry_regno >= 3 && ry_regno <= 10) |
| 1114 | { |
| 1115 | *r0_contains_arg = 1; |
| 1116 | return 1; |
| 1117 | } |
| 1118 | else |
| 1119 | return 0; |
| 1120 | } |
| 1121 | |
| 1122 | /* Save a General Purpose Register on stack. */ |
| 1123 | |
| 1124 | if ((op & 0xfc1f0003) == 0xf8010000 || /* std Rx,NUM(r1) */ |
| 1125 | (op & 0xfc1f0000) == 0xd8010000) /* stfd Rx,NUM(r1) */ |
| 1126 | { |
| 1127 | /* Rx: Only r3 - r10 are used for parameter passing. */ |
| 1128 | const int rx_regno = GET_SRC_REG (op); |
| 1129 | |
| 1130 | return (rx_regno >= 3 && rx_regno <= 10); |
| 1131 | } |
| 1132 | |
| 1133 | /* Save a General Purpose Register on stack via the Frame Pointer. */ |
| 1134 | |
| 1135 | if (framep && |
| 1136 | ((op & 0xfc1f0000) == 0x901f0000 || /* st rx,NUM(r31) */ |
| 1137 | (op & 0xfc1f0000) == 0x981f0000 || /* stb Rx,NUM(r31) */ |
| 1138 | (op & 0xfc1f0000) == 0xd81f0000)) /* stfd Rx,NUM(r31) */ |
| 1139 | { |
| 1140 | /* Rx: Usually, only r3 - r10 are used for parameter passing. |
| 1141 | However, the compiler sometimes uses r0 to hold an argument. */ |
| 1142 | const int rx_regno = GET_SRC_REG (op); |
| 1143 | |
| 1144 | return ((rx_regno >= 3 && rx_regno <= 10) |
| 1145 | || (rx_regno == 0 && *r0_contains_arg)); |
| 1146 | } |
| 1147 | |
| 1148 | if ((op & 0xfc1f0000) == 0xfc010000) /* frsp, fp?,NUM(r1) */ |
| 1149 | { |
| 1150 | /* Only f2 - f8 are used for parameter passing. */ |
| 1151 | const int src_regno = GET_SRC_REG (op); |
| 1152 | |
| 1153 | return (src_regno >= 2 && src_regno <= 8); |
| 1154 | } |
| 1155 | |
| 1156 | if (framep && ((op & 0xfc1f0000) == 0xfc1f0000)) /* frsp, fp?,NUM(r31) */ |
| 1157 | { |
| 1158 | /* Only f2 - f8 are used for parameter passing. */ |
| 1159 | const int src_regno = GET_SRC_REG (op); |
| 1160 | |
| 1161 | return (src_regno >= 2 && src_regno <= 8); |
| 1162 | } |
| 1163 | |
| 1164 | /* Not an insn that saves a parameter on stack. */ |
| 1165 | return 0; |
| 1166 | } |
| 1167 | |
| 1168 | /* Assuming that INSN is a "bl" instruction located at PC, return |
| 1169 | nonzero if the destination of the branch is a "blrl" instruction. |
| 1170 | |
| 1171 | This sequence is sometimes found in certain function prologues. |
| 1172 | It allows the function to load the LR register with a value that |
| 1173 | they can use to access PIC data using PC-relative offsets. */ |
| 1174 | |
| 1175 | static int |
| 1176 | bl_to_blrl_insn_p (CORE_ADDR pc, int insn, enum bfd_endian byte_order) |
| 1177 | { |
| 1178 | CORE_ADDR dest; |
| 1179 | int immediate; |
| 1180 | int absolute; |
| 1181 | int dest_insn; |
| 1182 | |
| 1183 | absolute = (int) ((insn >> 1) & 1); |
| 1184 | immediate = ((insn & ~3) << 6) >> 6; |
| 1185 | if (absolute) |
| 1186 | dest = immediate; |
| 1187 | else |
| 1188 | dest = pc + immediate; |
| 1189 | |
| 1190 | dest_insn = read_memory_integer (dest, 4, byte_order); |
| 1191 | if ((dest_insn & 0xfc00ffff) == 0x4c000021) /* blrl */ |
| 1192 | return 1; |
| 1193 | |
| 1194 | return 0; |
| 1195 | } |
| 1196 | |
| 1197 | /* Return true if OP is a stw or std instruction with |
| 1198 | register operands RS and RA and any immediate offset. |
| 1199 | |
| 1200 | If WITH_UPDATE is true, also return true if OP is |
| 1201 | a stwu or stdu instruction with the same operands. |
| 1202 | |
| 1203 | Return false otherwise. |
| 1204 | */ |
| 1205 | static bool |
| 1206 | store_insn_p (unsigned long op, unsigned long rs, |
| 1207 | unsigned long ra, bool with_update) |
| 1208 | { |
| 1209 | rs = rs << 21; |
| 1210 | ra = ra << 16; |
| 1211 | |
| 1212 | if (/* std RS, SIMM(RA) */ |
| 1213 | ((op & 0xffff0003) == (rs | ra | 0xf8000000)) || |
| 1214 | /* stw RS, SIMM(RA) */ |
| 1215 | ((op & 0xffff0000) == (rs | ra | 0x90000000))) |
| 1216 | return true; |
| 1217 | |
| 1218 | if (with_update) |
| 1219 | { |
| 1220 | if (/* stdu RS, SIMM(RA) */ |
| 1221 | ((op & 0xffff0003) == (rs | ra | 0xf8000001)) || |
| 1222 | /* stwu RS, SIMM(RA) */ |
| 1223 | ((op & 0xffff0000) == (rs | ra | 0x94000000))) |
| 1224 | return true; |
| 1225 | } |
| 1226 | |
| 1227 | return false; |
| 1228 | } |
| 1229 | |
| 1230 | /* Masks for decoding a branch-and-link (bl) instruction. |
| 1231 | |
| 1232 | BL_MASK and BL_INSTRUCTION are used in combination with each other. |
| 1233 | The former is anded with the opcode in question; if the result of |
| 1234 | this masking operation is equal to BL_INSTRUCTION, then the opcode in |
| 1235 | question is a ``bl'' instruction. |
| 1236 | |
| 1237 | BL_DISPLACMENT_MASK is anded with the opcode in order to extract |
| 1238 | the branch displacement. */ |
| 1239 | |
| 1240 | #define BL_MASK 0xfc000001 |
| 1241 | #define BL_INSTRUCTION 0x48000001 |
| 1242 | #define BL_DISPLACEMENT_MASK 0x03fffffc |
| 1243 | |
| 1244 | static unsigned long |
| 1245 | rs6000_fetch_instruction (struct gdbarch *gdbarch, const CORE_ADDR pc) |
| 1246 | { |
| 1247 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1248 | gdb_byte buf[4]; |
| 1249 | unsigned long op; |
| 1250 | |
| 1251 | /* Fetch the instruction and convert it to an integer. */ |
| 1252 | if (target_read_memory (pc, buf, 4)) |
| 1253 | return 0; |
| 1254 | op = extract_unsigned_integer (buf, 4, byte_order); |
| 1255 | |
| 1256 | return op; |
| 1257 | } |
| 1258 | |
| 1259 | /* GCC generates several well-known sequences of instructions at the begining |
| 1260 | of each function prologue when compiling with -fstack-check. If one of |
| 1261 | such sequences starts at START_PC, then return the address of the |
| 1262 | instruction immediately past this sequence. Otherwise, return START_PC. */ |
| 1263 | |
| 1264 | static CORE_ADDR |
| 1265 | rs6000_skip_stack_check (struct gdbarch *gdbarch, const CORE_ADDR start_pc) |
| 1266 | { |
| 1267 | CORE_ADDR pc = start_pc; |
| 1268 | unsigned long op = rs6000_fetch_instruction (gdbarch, pc); |
| 1269 | |
| 1270 | /* First possible sequence: A small number of probes. |
| 1271 | stw 0, -<some immediate>(1) |
| 1272 | [repeat this instruction any (small) number of times]. */ |
| 1273 | |
| 1274 | if ((op & 0xffff0000) == 0x90010000) |
| 1275 | { |
| 1276 | while ((op & 0xffff0000) == 0x90010000) |
| 1277 | { |
| 1278 | pc = pc + 4; |
| 1279 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1280 | } |
| 1281 | return pc; |
| 1282 | } |
| 1283 | |
| 1284 | /* Second sequence: A probing loop. |
| 1285 | addi 12,1,-<some immediate> |
| 1286 | lis 0,-<some immediate> |
| 1287 | [possibly ori 0,0,<some immediate>] |
| 1288 | add 0,12,0 |
| 1289 | cmpw 0,12,0 |
| 1290 | beq 0,<disp> |
| 1291 | addi 12,12,-<some immediate> |
| 1292 | stw 0,0(12) |
| 1293 | b <disp> |
| 1294 | [possibly one last probe: stw 0,<some immediate>(12)]. */ |
| 1295 | |
| 1296 | while (1) |
| 1297 | { |
| 1298 | /* addi 12,1,-<some immediate> */ |
| 1299 | if ((op & 0xffff0000) != 0x39810000) |
| 1300 | break; |
| 1301 | |
| 1302 | /* lis 0,-<some immediate> */ |
| 1303 | pc = pc + 4; |
| 1304 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1305 | if ((op & 0xffff0000) != 0x3c000000) |
| 1306 | break; |
| 1307 | |
| 1308 | pc = pc + 4; |
| 1309 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1310 | /* [possibly ori 0,0,<some immediate>] */ |
| 1311 | if ((op & 0xffff0000) == 0x60000000) |
| 1312 | { |
| 1313 | pc = pc + 4; |
| 1314 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1315 | } |
| 1316 | /* add 0,12,0 */ |
| 1317 | if (op != 0x7c0c0214) |
| 1318 | break; |
| 1319 | |
| 1320 | /* cmpw 0,12,0 */ |
| 1321 | pc = pc + 4; |
| 1322 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1323 | if (op != 0x7c0c0000) |
| 1324 | break; |
| 1325 | |
| 1326 | /* beq 0,<disp> */ |
| 1327 | pc = pc + 4; |
| 1328 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1329 | if ((op & 0xff9f0001) != 0x41820000) |
| 1330 | break; |
| 1331 | |
| 1332 | /* addi 12,12,-<some immediate> */ |
| 1333 | pc = pc + 4; |
| 1334 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1335 | if ((op & 0xffff0000) != 0x398c0000) |
| 1336 | break; |
| 1337 | |
| 1338 | /* stw 0,0(12) */ |
| 1339 | pc = pc + 4; |
| 1340 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1341 | if (op != 0x900c0000) |
| 1342 | break; |
| 1343 | |
| 1344 | /* b <disp> */ |
| 1345 | pc = pc + 4; |
| 1346 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1347 | if ((op & 0xfc000001) != 0x48000000) |
| 1348 | break; |
| 1349 | |
| 1350 | /* [possibly one last probe: stw 0,<some immediate>(12)]. */ |
| 1351 | pc = pc + 4; |
| 1352 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1353 | if ((op & 0xffff0000) == 0x900c0000) |
| 1354 | { |
| 1355 | pc = pc + 4; |
| 1356 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1357 | } |
| 1358 | |
| 1359 | /* We found a valid stack-check sequence, return the new PC. */ |
| 1360 | return pc; |
| 1361 | } |
| 1362 | |
| 1363 | /* Third sequence: No probe; instead, a comparizon between the stack size |
| 1364 | limit (saved in a run-time global variable) and the current stack |
| 1365 | pointer: |
| 1366 | |
| 1367 | addi 0,1,-<some immediate> |
| 1368 | lis 12,__gnat_stack_limit@ha |
| 1369 | lwz 12,__gnat_stack_limit@l(12) |
| 1370 | twllt 0,12 |
| 1371 | |
| 1372 | or, with a small variant in the case of a bigger stack frame: |
| 1373 | addis 0,1,<some immediate> |
| 1374 | addic 0,0,-<some immediate> |
| 1375 | lis 12,__gnat_stack_limit@ha |
| 1376 | lwz 12,__gnat_stack_limit@l(12) |
| 1377 | twllt 0,12 |
| 1378 | */ |
| 1379 | while (1) |
| 1380 | { |
| 1381 | /* addi 0,1,-<some immediate> */ |
| 1382 | if ((op & 0xffff0000) != 0x38010000) |
| 1383 | { |
| 1384 | /* small stack frame variant not recognized; try the |
| 1385 | big stack frame variant: */ |
| 1386 | |
| 1387 | /* addis 0,1,<some immediate> */ |
| 1388 | if ((op & 0xffff0000) != 0x3c010000) |
| 1389 | break; |
| 1390 | |
| 1391 | /* addic 0,0,-<some immediate> */ |
| 1392 | pc = pc + 4; |
| 1393 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1394 | if ((op & 0xffff0000) != 0x30000000) |
| 1395 | break; |
| 1396 | } |
| 1397 | |
| 1398 | /* lis 12,<some immediate> */ |
| 1399 | pc = pc + 4; |
| 1400 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1401 | if ((op & 0xffff0000) != 0x3d800000) |
| 1402 | break; |
| 1403 | |
| 1404 | /* lwz 12,<some immediate>(12) */ |
| 1405 | pc = pc + 4; |
| 1406 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1407 | if ((op & 0xffff0000) != 0x818c0000) |
| 1408 | break; |
| 1409 | |
| 1410 | /* twllt 0,12 */ |
| 1411 | pc = pc + 4; |
| 1412 | op = rs6000_fetch_instruction (gdbarch, pc); |
| 1413 | if ((op & 0xfffffffe) != 0x7c406008) |
| 1414 | break; |
| 1415 | |
| 1416 | /* We found a valid stack-check sequence, return the new PC. */ |
| 1417 | return pc; |
| 1418 | } |
| 1419 | |
| 1420 | /* No stack check code in our prologue, return the start_pc. */ |
| 1421 | return start_pc; |
| 1422 | } |
| 1423 | |
| 1424 | /* return pc value after skipping a function prologue and also return |
| 1425 | information about a function frame. |
| 1426 | |
| 1427 | in struct rs6000_framedata fdata: |
| 1428 | - frameless is TRUE, if function does not have a frame. |
| 1429 | - nosavedpc is TRUE, if function does not save %pc value in its frame. |
| 1430 | - offset is the initial size of this stack frame --- the amount by |
| 1431 | which we decrement the sp to allocate the frame. |
| 1432 | - saved_gpr is the number of the first saved gpr. |
| 1433 | - saved_fpr is the number of the first saved fpr. |
| 1434 | - saved_vr is the number of the first saved vr. |
| 1435 | - saved_ev is the number of the first saved ev. |
| 1436 | - alloca_reg is the number of the register used for alloca() handling. |
| 1437 | Otherwise -1. |
| 1438 | - gpr_offset is the offset of the first saved gpr from the previous frame. |
| 1439 | - fpr_offset is the offset of the first saved fpr from the previous frame. |
| 1440 | - vr_offset is the offset of the first saved vr from the previous frame. |
| 1441 | - ev_offset is the offset of the first saved ev from the previous frame. |
| 1442 | - lr_offset is the offset of the saved lr |
| 1443 | - cr_offset is the offset of the saved cr |
| 1444 | - vrsave_offset is the offset of the saved vrsave register. */ |
| 1445 | |
| 1446 | static CORE_ADDR |
| 1447 | skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc, CORE_ADDR lim_pc, |
| 1448 | struct rs6000_framedata *fdata) |
| 1449 | { |
| 1450 | CORE_ADDR orig_pc = pc; |
| 1451 | CORE_ADDR last_prologue_pc = pc; |
| 1452 | CORE_ADDR li_found_pc = 0; |
| 1453 | gdb_byte buf[4]; |
| 1454 | unsigned long op; |
| 1455 | long offset = 0; |
| 1456 | long alloca_reg_offset = 0; |
| 1457 | long vr_saved_offset = 0; |
| 1458 | int lr_reg = -1; |
| 1459 | int cr_reg = -1; |
| 1460 | int vr_reg = -1; |
| 1461 | int ev_reg = -1; |
| 1462 | long ev_offset = 0; |
| 1463 | int vrsave_reg = -1; |
| 1464 | int reg; |
| 1465 | int framep = 0; |
| 1466 | int minimal_toc_loaded = 0; |
| 1467 | int prev_insn_was_prologue_insn = 1; |
| 1468 | int num_skip_non_prologue_insns = 0; |
| 1469 | int r0_contains_arg = 0; |
| 1470 | const struct bfd_arch_info *arch_info = gdbarch_bfd_arch_info (gdbarch); |
| 1471 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 1472 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 1473 | |
| 1474 | memset (fdata, 0, sizeof (struct rs6000_framedata)); |
| 1475 | fdata->saved_gpr = -1; |
| 1476 | fdata->saved_fpr = -1; |
| 1477 | fdata->saved_vr = -1; |
| 1478 | fdata->saved_ev = -1; |
| 1479 | fdata->alloca_reg = -1; |
| 1480 | fdata->frameless = 1; |
| 1481 | fdata->nosavedpc = 1; |
| 1482 | fdata->lr_register = -1; |
| 1483 | |
| 1484 | pc = rs6000_skip_stack_check (gdbarch, pc); |
| 1485 | if (pc >= lim_pc) |
| 1486 | pc = lim_pc; |
| 1487 | |
| 1488 | for (;; pc += 4) |
| 1489 | { |
| 1490 | /* Sometimes it isn't clear if an instruction is a prologue |
| 1491 | instruction or not. When we encounter one of these ambiguous |
| 1492 | cases, we'll set prev_insn_was_prologue_insn to 0 (false). |
| 1493 | Otherwise, we'll assume that it really is a prologue instruction. */ |
| 1494 | if (prev_insn_was_prologue_insn) |
| 1495 | last_prologue_pc = pc; |
| 1496 | |
| 1497 | /* Stop scanning if we've hit the limit. */ |
| 1498 | if (pc >= lim_pc) |
| 1499 | break; |
| 1500 | |
| 1501 | prev_insn_was_prologue_insn = 1; |
| 1502 | |
| 1503 | /* Fetch the instruction and convert it to an integer. */ |
| 1504 | if (target_read_memory (pc, buf, 4)) |
| 1505 | break; |
| 1506 | op = extract_unsigned_integer (buf, 4, byte_order); |
| 1507 | |
| 1508 | if ((op & 0xfc1fffff) == 0x7c0802a6) |
| 1509 | { /* mflr Rx */ |
| 1510 | /* Since shared library / PIC code, which needs to get its |
| 1511 | address at runtime, can appear to save more than one link |
| 1512 | register vis: |
| 1513 | |
| 1514 | *INDENT-OFF* |
| 1515 | stwu r1,-304(r1) |
| 1516 | mflr r3 |
| 1517 | bl 0xff570d0 (blrl) |
| 1518 | stw r30,296(r1) |
| 1519 | mflr r30 |
| 1520 | stw r31,300(r1) |
| 1521 | stw r3,308(r1); |
| 1522 | ... |
| 1523 | *INDENT-ON* |
| 1524 | |
| 1525 | remember just the first one, but skip over additional |
| 1526 | ones. */ |
| 1527 | if (lr_reg == -1) |
| 1528 | lr_reg = (op & 0x03e00000) >> 21; |
| 1529 | if (lr_reg == 0) |
| 1530 | r0_contains_arg = 0; |
| 1531 | continue; |
| 1532 | } |
| 1533 | else if ((op & 0xfc1fffff) == 0x7c000026) |
| 1534 | { /* mfcr Rx */ |
| 1535 | cr_reg = (op & 0x03e00000) >> 21; |
| 1536 | if (cr_reg == 0) |
| 1537 | r0_contains_arg = 0; |
| 1538 | continue; |
| 1539 | |
| 1540 | } |
| 1541 | else if ((op & 0xfc1f0000) == 0xd8010000) |
| 1542 | { /* stfd Rx,NUM(r1) */ |
| 1543 | reg = GET_SRC_REG (op); |
| 1544 | if (fdata->saved_fpr == -1 || fdata->saved_fpr > reg) |
| 1545 | { |
| 1546 | fdata->saved_fpr = reg; |
| 1547 | fdata->fpr_offset = SIGNED_SHORT (op) + offset; |
| 1548 | } |
| 1549 | continue; |
| 1550 | |
| 1551 | } |
| 1552 | else if (((op & 0xfc1f0000) == 0xbc010000) || /* stm Rx, NUM(r1) */ |
| 1553 | (((op & 0xfc1f0000) == 0x90010000 || /* st rx,NUM(r1) */ |
| 1554 | (op & 0xfc1f0003) == 0xf8010000) && /* std rx,NUM(r1) */ |
| 1555 | (op & 0x03e00000) >= 0x01a00000)) /* rx >= r13 */ |
| 1556 | { |
| 1557 | |
| 1558 | reg = GET_SRC_REG (op); |
| 1559 | if ((op & 0xfc1f0000) == 0xbc010000) |
| 1560 | fdata->gpr_mask |= ~((1U << reg) - 1); |
| 1561 | else |
| 1562 | fdata->gpr_mask |= 1U << reg; |
| 1563 | if (fdata->saved_gpr == -1 || fdata->saved_gpr > reg) |
| 1564 | { |
| 1565 | fdata->saved_gpr = reg; |
| 1566 | if ((op & 0xfc1f0003) == 0xf8010000) |
| 1567 | op &= ~3UL; |
| 1568 | fdata->gpr_offset = SIGNED_SHORT (op) + offset; |
| 1569 | } |
| 1570 | continue; |
| 1571 | |
| 1572 | } |
| 1573 | else if ((op & 0xffff0000) == 0x3c4c0000 |
| 1574 | || (op & 0xffff0000) == 0x3c400000 |
| 1575 | || (op & 0xffff0000) == 0x38420000) |
| 1576 | { |
| 1577 | /* . 0: addis 2,12,.TOC.-0b@ha |
| 1578 | . addi 2,2,.TOC.-0b@l |
| 1579 | or |
| 1580 | . lis 2,.TOC.@ha |
| 1581 | . addi 2,2,.TOC.@l |
| 1582 | used by ELFv2 global entry points to set up r2. */ |
| 1583 | continue; |
| 1584 | } |
| 1585 | else if (op == 0x60000000) |
| 1586 | { |
| 1587 | /* nop */ |
| 1588 | /* Allow nops in the prologue, but do not consider them to |
| 1589 | be part of the prologue unless followed by other prologue |
| 1590 | instructions. */ |
| 1591 | prev_insn_was_prologue_insn = 0; |
| 1592 | continue; |
| 1593 | |
| 1594 | } |
| 1595 | else if ((op & 0xffff0000) == 0x3c000000) |
| 1596 | { /* addis 0,0,NUM, used for >= 32k frames */ |
| 1597 | fdata->offset = (op & 0x0000ffff) << 16; |
| 1598 | fdata->frameless = 0; |
| 1599 | r0_contains_arg = 0; |
| 1600 | continue; |
| 1601 | |
| 1602 | } |
| 1603 | else if ((op & 0xffff0000) == 0x60000000) |
| 1604 | { /* ori 0,0,NUM, 2nd half of >= 32k frames */ |
| 1605 | fdata->offset |= (op & 0x0000ffff); |
| 1606 | fdata->frameless = 0; |
| 1607 | r0_contains_arg = 0; |
| 1608 | continue; |
| 1609 | |
| 1610 | } |
| 1611 | else if (lr_reg >= 0 && |
| 1612 | ((store_insn_p (op, lr_reg, 1, true)) || |
| 1613 | (framep && |
| 1614 | (store_insn_p (op, lr_reg, |
| 1615 | fdata->alloca_reg - tdep->ppc_gp0_regnum, |
| 1616 | false))))) |
| 1617 | { |
| 1618 | if (store_insn_p (op, lr_reg, 1, true)) |
| 1619 | fdata->lr_offset = offset; |
| 1620 | else /* LR save through frame pointer. */ |
| 1621 | fdata->lr_offset = alloca_reg_offset; |
| 1622 | |
| 1623 | fdata->nosavedpc = 0; |
| 1624 | /* Invalidate lr_reg, but don't set it to -1. |
| 1625 | That would mean that it had never been set. */ |
| 1626 | lr_reg = -2; |
| 1627 | if ((op & 0xfc000003) == 0xf8000000 || /* std */ |
| 1628 | (op & 0xfc000000) == 0x90000000) /* stw */ |
| 1629 | { |
| 1630 | /* Does not update r1, so add displacement to lr_offset. */ |
| 1631 | fdata->lr_offset += SIGNED_SHORT (op); |
| 1632 | } |
| 1633 | continue; |
| 1634 | |
| 1635 | } |
| 1636 | else if (cr_reg >= 0 && |
| 1637 | (store_insn_p (op, cr_reg, 1, true))) |
| 1638 | { |
| 1639 | fdata->cr_offset = offset; |
| 1640 | /* Invalidate cr_reg, but don't set it to -1. |
| 1641 | That would mean that it had never been set. */ |
| 1642 | cr_reg = -2; |
| 1643 | if ((op & 0xfc000003) == 0xf8000000 || |
| 1644 | (op & 0xfc000000) == 0x90000000) |
| 1645 | { |
| 1646 | /* Does not update r1, so add displacement to cr_offset. */ |
| 1647 | fdata->cr_offset += SIGNED_SHORT (op); |
| 1648 | } |
| 1649 | continue; |
| 1650 | |
| 1651 | } |
| 1652 | else if ((op & 0xfe80ffff) == 0x42800005 && lr_reg != -1) |
| 1653 | { |
| 1654 | /* bcl 20,xx,.+4 is used to get the current PC, with or without |
| 1655 | prediction bits. If the LR has already been saved, we can |
| 1656 | skip it. */ |
| 1657 | continue; |
| 1658 | } |
| 1659 | else if (op == 0x48000005) |
| 1660 | { /* bl .+4 used in |
| 1661 | -mrelocatable */ |
| 1662 | fdata->used_bl = 1; |
| 1663 | continue; |
| 1664 | |
| 1665 | } |
| 1666 | else if (op == 0x48000004) |
| 1667 | { /* b .+4 (xlc) */ |
| 1668 | break; |
| 1669 | |
| 1670 | } |
| 1671 | else if ((op & 0xffff0000) == 0x3fc00000 || /* addis 30,0,foo@ha, used |
| 1672 | in V.4 -mminimal-toc */ |
| 1673 | (op & 0xffff0000) == 0x3bde0000) |
| 1674 | { /* addi 30,30,foo@l */ |
| 1675 | continue; |
| 1676 | |
| 1677 | } |
| 1678 | else if ((op & 0xfc000001) == 0x48000001) |
| 1679 | { /* bl foo, |
| 1680 | to save fprs??? */ |
| 1681 | |
| 1682 | fdata->frameless = 0; |
| 1683 | |
| 1684 | /* If the return address has already been saved, we can skip |
| 1685 | calls to blrl (for PIC). */ |
| 1686 | if (lr_reg != -1 && bl_to_blrl_insn_p (pc, op, byte_order)) |
| 1687 | { |
| 1688 | fdata->used_bl = 1; |
| 1689 | continue; |
| 1690 | } |
| 1691 | |
| 1692 | /* Don't skip over the subroutine call if it is not within |
| 1693 | the first three instructions of the prologue and either |
| 1694 | we have no line table information or the line info tells |
| 1695 | us that the subroutine call is not part of the line |
| 1696 | associated with the prologue. */ |
| 1697 | if ((pc - orig_pc) > 8) |
| 1698 | { |
| 1699 | struct symtab_and_line prologue_sal = find_pc_line (orig_pc, 0); |
| 1700 | struct symtab_and_line this_sal = find_pc_line (pc, 0); |
| 1701 | |
| 1702 | if ((prologue_sal.line == 0) |
| 1703 | || (prologue_sal.line != this_sal.line)) |
| 1704 | break; |
| 1705 | } |
| 1706 | |
| 1707 | op = read_memory_integer (pc + 4, 4, byte_order); |
| 1708 | |
| 1709 | /* At this point, make sure this is not a trampoline |
| 1710 | function (a function that simply calls another functions, |
| 1711 | and nothing else). If the next is not a nop, this branch |
| 1712 | was part of the function prologue. */ |
| 1713 | |
| 1714 | if (op == 0x4def7b82 || op == 0) /* crorc 15, 15, 15 */ |
| 1715 | break; /* Don't skip over |
| 1716 | this branch. */ |
| 1717 | |
| 1718 | fdata->used_bl = 1; |
| 1719 | continue; |
| 1720 | } |
| 1721 | /* update stack pointer */ |
| 1722 | else if ((op & 0xfc1f0000) == 0x94010000) |
| 1723 | { /* stu rX,NUM(r1) || stwu rX,NUM(r1) */ |
| 1724 | fdata->frameless = 0; |
| 1725 | fdata->offset = SIGNED_SHORT (op); |
| 1726 | offset = fdata->offset; |
| 1727 | continue; |
| 1728 | } |
| 1729 | else if ((op & 0xfc1f07fa) == 0x7c01016a) |
| 1730 | { /* stwux rX,r1,rY || stdux rX,r1,rY */ |
| 1731 | /* No way to figure out what r1 is going to be. */ |
| 1732 | fdata->frameless = 0; |
| 1733 | offset = fdata->offset; |
| 1734 | continue; |
| 1735 | } |
| 1736 | else if ((op & 0xfc1f0003) == 0xf8010001) |
| 1737 | { /* stdu rX,NUM(r1) */ |
| 1738 | fdata->frameless = 0; |
| 1739 | fdata->offset = SIGNED_SHORT (op & ~3UL); |
| 1740 | offset = fdata->offset; |
| 1741 | continue; |
| 1742 | } |
| 1743 | else if ((op & 0xffff0000) == 0x38210000) |
| 1744 | { /* addi r1,r1,SIMM */ |
| 1745 | fdata->frameless = 0; |
| 1746 | fdata->offset += SIGNED_SHORT (op); |
| 1747 | offset = fdata->offset; |
| 1748 | continue; |
| 1749 | } |
| 1750 | /* Load up minimal toc pointer. Do not treat an epilogue restore |
| 1751 | of r31 as a minimal TOC load. */ |
| 1752 | else if (((op >> 22) == 0x20f || /* l r31,... or l r30,... */ |
| 1753 | (op >> 22) == 0x3af) /* ld r31,... or ld r30,... */ |
| 1754 | && !framep |
| 1755 | && !minimal_toc_loaded) |
| 1756 | { |
| 1757 | minimal_toc_loaded = 1; |
| 1758 | continue; |
| 1759 | |
| 1760 | /* move parameters from argument registers to local variable |
| 1761 | registers */ |
| 1762 | } |
| 1763 | else if ((op & 0xfc0007fe) == 0x7c000378 && /* mr(.) Rx,Ry */ |
| 1764 | (((op >> 21) & 31) >= 3) && /* R3 >= Ry >= R10 */ |
| 1765 | (((op >> 21) & 31) <= 10) && |
| 1766 | ((long) ((op >> 16) & 31) |
| 1767 | >= fdata->saved_gpr)) /* Rx: local var reg */ |
| 1768 | { |
| 1769 | continue; |
| 1770 | |
| 1771 | /* store parameters in stack */ |
| 1772 | } |
| 1773 | /* Move parameters from argument registers to temporary register. */ |
| 1774 | else if (store_param_on_stack_p (op, framep, &r0_contains_arg)) |
| 1775 | { |
| 1776 | continue; |
| 1777 | |
| 1778 | /* Set up frame pointer */ |
| 1779 | } |
| 1780 | else if (op == 0x603d0000) /* oril r29, r1, 0x0 */ |
| 1781 | { |
| 1782 | fdata->frameless = 0; |
| 1783 | framep = 1; |
| 1784 | fdata->alloca_reg = (tdep->ppc_gp0_regnum + 29); |
| 1785 | alloca_reg_offset = offset; |
| 1786 | continue; |
| 1787 | |
| 1788 | /* Another way to set up the frame pointer. */ |
| 1789 | } |
| 1790 | else if (op == 0x603f0000 /* oril r31, r1, 0x0 */ |
| 1791 | || op == 0x7c3f0b78) |
| 1792 | { /* mr r31, r1 */ |
| 1793 | fdata->frameless = 0; |
| 1794 | framep = 1; |
| 1795 | fdata->alloca_reg = (tdep->ppc_gp0_regnum + 31); |
| 1796 | alloca_reg_offset = offset; |
| 1797 | continue; |
| 1798 | |
| 1799 | /* Another way to set up the frame pointer. */ |
| 1800 | } |
| 1801 | else if ((op & 0xfc1fffff) == 0x38010000) |
| 1802 | { /* addi rX, r1, 0x0 */ |
| 1803 | fdata->frameless = 0; |
| 1804 | framep = 1; |
| 1805 | fdata->alloca_reg = (tdep->ppc_gp0_regnum |
| 1806 | + ((op & ~0x38010000) >> 21)); |
| 1807 | alloca_reg_offset = offset; |
| 1808 | continue; |
| 1809 | } |
| 1810 | /* AltiVec related instructions. */ |
| 1811 | /* Store the vrsave register (spr 256) in another register for |
| 1812 | later manipulation, or load a register into the vrsave |
| 1813 | register. 2 instructions are used: mfvrsave and |
| 1814 | mtvrsave. They are shorthand notation for mfspr Rn, SPR256 |
| 1815 | and mtspr SPR256, Rn. */ |
| 1816 | /* mfspr Rn SPR256 == 011111 nnnnn 0000001000 01010100110 |
| 1817 | mtspr SPR256 Rn == 011111 nnnnn 0000001000 01110100110 */ |
| 1818 | else if ((op & 0xfc1fffff) == 0x7c0042a6) /* mfvrsave Rn */ |
| 1819 | { |
| 1820 | vrsave_reg = GET_SRC_REG (op); |
| 1821 | continue; |
| 1822 | } |
| 1823 | else if ((op & 0xfc1fffff) == 0x7c0043a6) /* mtvrsave Rn */ |
| 1824 | { |
| 1825 | continue; |
| 1826 | } |
| 1827 | /* Store the register where vrsave was saved to onto the stack: |
| 1828 | rS is the register where vrsave was stored in a previous |
| 1829 | instruction. */ |
| 1830 | /* 100100 sssss 00001 dddddddd dddddddd */ |
| 1831 | else if ((op & 0xfc1f0000) == 0x90010000) /* stw rS, d(r1) */ |
| 1832 | { |
| 1833 | if (vrsave_reg == GET_SRC_REG (op)) |
| 1834 | { |
| 1835 | fdata->vrsave_offset = SIGNED_SHORT (op) + offset; |
| 1836 | vrsave_reg = -1; |
| 1837 | } |
| 1838 | continue; |
| 1839 | } |
| 1840 | /* Compute the new value of vrsave, by modifying the register |
| 1841 | where vrsave was saved to. */ |
| 1842 | else if (((op & 0xfc000000) == 0x64000000) /* oris Ra, Rs, UIMM */ |
| 1843 | || ((op & 0xfc000000) == 0x60000000))/* ori Ra, Rs, UIMM */ |
| 1844 | { |
| 1845 | continue; |
| 1846 | } |
| 1847 | /* li r0, SIMM (short for addi r0, 0, SIMM). This is the first |
| 1848 | in a pair of insns to save the vector registers on the |
| 1849 | stack. */ |
| 1850 | /* 001110 00000 00000 iiii iiii iiii iiii */ |
| 1851 | /* 001110 01110 00000 iiii iiii iiii iiii */ |
| 1852 | else if ((op & 0xffff0000) == 0x38000000 /* li r0, SIMM */ |
| 1853 | || (op & 0xffff0000) == 0x39c00000) /* li r14, SIMM */ |
| 1854 | { |
| 1855 | if ((op & 0xffff0000) == 0x38000000) |
| 1856 | r0_contains_arg = 0; |
| 1857 | li_found_pc = pc; |
| 1858 | vr_saved_offset = SIGNED_SHORT (op); |
| 1859 | |
| 1860 | /* This insn by itself is not part of the prologue, unless |
| 1861 | if part of the pair of insns mentioned above. So do not |
| 1862 | record this insn as part of the prologue yet. */ |
| 1863 | prev_insn_was_prologue_insn = 0; |
| 1864 | } |
| 1865 | /* Store vector register S at (r31+r0) aligned to 16 bytes. */ |
| 1866 | /* 011111 sssss 11111 00000 00111001110 */ |
| 1867 | else if ((op & 0xfc1fffff) == 0x7c1f01ce) /* stvx Vs, R31, R0 */ |
| 1868 | { |
| 1869 | if (pc == (li_found_pc + 4)) |
| 1870 | { |
| 1871 | vr_reg = GET_SRC_REG (op); |
| 1872 | /* If this is the first vector reg to be saved, or if |
| 1873 | it has a lower number than others previously seen, |
| 1874 | reupdate the frame info. */ |
| 1875 | if (fdata->saved_vr == -1 || fdata->saved_vr > vr_reg) |
| 1876 | { |
| 1877 | fdata->saved_vr = vr_reg; |
| 1878 | fdata->vr_offset = vr_saved_offset + offset; |
| 1879 | } |
| 1880 | vr_saved_offset = -1; |
| 1881 | vr_reg = -1; |
| 1882 | li_found_pc = 0; |
| 1883 | } |
| 1884 | } |
| 1885 | /* End AltiVec related instructions. */ |
| 1886 | |
| 1887 | /* Start BookE related instructions. */ |
| 1888 | /* Store gen register S at (r31+uimm). |
| 1889 | Any register less than r13 is volatile, so we don't care. */ |
| 1890 | /* 000100 sssss 11111 iiiii 01100100001 */ |
| 1891 | else if (arch_info->mach == bfd_mach_ppc_e500 |
| 1892 | && (op & 0xfc1f07ff) == 0x101f0321) /* evstdd Rs,uimm(R31) */ |
| 1893 | { |
| 1894 | if ((op & 0x03e00000) >= 0x01a00000) /* Rs >= r13 */ |
| 1895 | { |
| 1896 | unsigned int imm; |
| 1897 | ev_reg = GET_SRC_REG (op); |
| 1898 | imm = (op >> 11) & 0x1f; |
| 1899 | ev_offset = imm * 8; |
| 1900 | /* If this is the first vector reg to be saved, or if |
| 1901 | it has a lower number than others previously seen, |
| 1902 | reupdate the frame info. */ |
| 1903 | if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg) |
| 1904 | { |
| 1905 | fdata->saved_ev = ev_reg; |
| 1906 | fdata->ev_offset = ev_offset + offset; |
| 1907 | } |
| 1908 | } |
| 1909 | continue; |
| 1910 | } |
| 1911 | /* Store gen register rS at (r1+rB). */ |
| 1912 | /* 000100 sssss 00001 bbbbb 01100100000 */ |
| 1913 | else if (arch_info->mach == bfd_mach_ppc_e500 |
| 1914 | && (op & 0xffe007ff) == 0x13e00320) /* evstddx RS,R1,Rb */ |
| 1915 | { |
| 1916 | if (pc == (li_found_pc + 4)) |
| 1917 | { |
| 1918 | ev_reg = GET_SRC_REG (op); |
| 1919 | /* If this is the first vector reg to be saved, or if |
| 1920 | it has a lower number than others previously seen, |
| 1921 | reupdate the frame info. */ |
| 1922 | /* We know the contents of rB from the previous instruction. */ |
| 1923 | if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg) |
| 1924 | { |
| 1925 | fdata->saved_ev = ev_reg; |
| 1926 | fdata->ev_offset = vr_saved_offset + offset; |
| 1927 | } |
| 1928 | vr_saved_offset = -1; |
| 1929 | ev_reg = -1; |
| 1930 | li_found_pc = 0; |
| 1931 | } |
| 1932 | continue; |
| 1933 | } |
| 1934 | /* Store gen register r31 at (rA+uimm). */ |
| 1935 | /* 000100 11111 aaaaa iiiii 01100100001 */ |
| 1936 | else if (arch_info->mach == bfd_mach_ppc_e500 |
| 1937 | && (op & 0xffe007ff) == 0x13e00321) /* evstdd R31,Ra,UIMM */ |
| 1938 | { |
| 1939 | /* Wwe know that the source register is 31 already, but |
| 1940 | it can't hurt to compute it. */ |
| 1941 | ev_reg = GET_SRC_REG (op); |
| 1942 | ev_offset = ((op >> 11) & 0x1f) * 8; |
| 1943 | /* If this is the first vector reg to be saved, or if |
| 1944 | it has a lower number than others previously seen, |
| 1945 | reupdate the frame info. */ |
| 1946 | if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg) |
| 1947 | { |
| 1948 | fdata->saved_ev = ev_reg; |
| 1949 | fdata->ev_offset = ev_offset + offset; |
| 1950 | } |
| 1951 | |
| 1952 | continue; |
| 1953 | } |
| 1954 | /* Store gen register S at (r31+r0). |
| 1955 | Store param on stack when offset from SP bigger than 4 bytes. */ |
| 1956 | /* 000100 sssss 11111 00000 01100100000 */ |
| 1957 | else if (arch_info->mach == bfd_mach_ppc_e500 |
| 1958 | && (op & 0xfc1fffff) == 0x101f0320) /* evstddx Rs,R31,R0 */ |
| 1959 | { |
| 1960 | if (pc == (li_found_pc + 4)) |
| 1961 | { |
| 1962 | if ((op & 0x03e00000) >= 0x01a00000) |
| 1963 | { |
| 1964 | ev_reg = GET_SRC_REG (op); |
| 1965 | /* If this is the first vector reg to be saved, or if |
| 1966 | it has a lower number than others previously seen, |
| 1967 | reupdate the frame info. */ |
| 1968 | /* We know the contents of r0 from the previous |
| 1969 | instruction. */ |
| 1970 | if (fdata->saved_ev == -1 || fdata->saved_ev > ev_reg) |
| 1971 | { |
| 1972 | fdata->saved_ev = ev_reg; |
| 1973 | fdata->ev_offset = vr_saved_offset + offset; |
| 1974 | } |
| 1975 | ev_reg = -1; |
| 1976 | } |
| 1977 | vr_saved_offset = -1; |
| 1978 | li_found_pc = 0; |
| 1979 | continue; |
| 1980 | } |
| 1981 | } |
| 1982 | /* End BookE related instructions. */ |
| 1983 | |
| 1984 | else |
| 1985 | { |
| 1986 | /* Not a recognized prologue instruction. |
| 1987 | Handle optimizer code motions into the prologue by continuing |
| 1988 | the search if we have no valid frame yet or if the return |
| 1989 | address is not yet saved in the frame. Also skip instructions |
| 1990 | if some of the GPRs expected to be saved are not yet saved. */ |
| 1991 | if (fdata->frameless == 0 && fdata->nosavedpc == 0 |
| 1992 | && fdata->saved_gpr != -1) |
| 1993 | { |
| 1994 | unsigned int all_mask = ~((1U << fdata->saved_gpr) - 1); |
| 1995 | |
| 1996 | if ((fdata->gpr_mask & all_mask) == all_mask) |
| 1997 | break; |
| 1998 | } |
| 1999 | |
| 2000 | if (op == 0x4e800020 /* blr */ |
| 2001 | || op == 0x4e800420) /* bctr */ |
| 2002 | /* Do not scan past epilogue in frameless functions or |
| 2003 | trampolines. */ |
| 2004 | break; |
| 2005 | if ((op & 0xf4000000) == 0x40000000) /* bxx */ |
| 2006 | /* Never skip branches. */ |
| 2007 | break; |
| 2008 | |
| 2009 | if (num_skip_non_prologue_insns++ > max_skip_non_prologue_insns) |
| 2010 | /* Do not scan too many insns, scanning insns is expensive with |
| 2011 | remote targets. */ |
| 2012 | break; |
| 2013 | |
| 2014 | /* Continue scanning. */ |
| 2015 | prev_insn_was_prologue_insn = 0; |
| 2016 | continue; |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | #if 0 |
| 2021 | /* I have problems with skipping over __main() that I need to address |
| 2022 | * sometime. Previously, I used to use misc_function_vector which |
| 2023 | * didn't work as well as I wanted to be. -MGO */ |
| 2024 | |
| 2025 | /* If the first thing after skipping a prolog is a branch to a function, |
| 2026 | this might be a call to an initializer in main(), introduced by gcc2. |
| 2027 | We'd like to skip over it as well. Fortunately, xlc does some extra |
| 2028 | work before calling a function right after a prologue, thus we can |
| 2029 | single out such gcc2 behaviour. */ |
| 2030 | |
| 2031 | |
| 2032 | if ((op & 0xfc000001) == 0x48000001) |
| 2033 | { /* bl foo, an initializer function? */ |
| 2034 | op = read_memory_integer (pc + 4, 4, byte_order); |
| 2035 | |
| 2036 | if (op == 0x4def7b82) |
| 2037 | { /* cror 0xf, 0xf, 0xf (nop) */ |
| 2038 | |
| 2039 | /* Check and see if we are in main. If so, skip over this |
| 2040 | initializer function as well. */ |
| 2041 | |
| 2042 | tmp = find_pc_misc_function (pc); |
| 2043 | if (tmp >= 0 |
| 2044 | && strcmp (misc_function_vector[tmp].name, main_name ()) == 0) |
| 2045 | return pc + 8; |
| 2046 | } |
| 2047 | } |
| 2048 | #endif /* 0 */ |
| 2049 | |
| 2050 | if (pc == lim_pc && lr_reg >= 0) |
| 2051 | fdata->lr_register = lr_reg; |
| 2052 | |
| 2053 | fdata->offset = -fdata->offset; |
| 2054 | return last_prologue_pc; |
| 2055 | } |
| 2056 | |
| 2057 | static CORE_ADDR |
| 2058 | rs6000_skip_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 2059 | { |
| 2060 | struct rs6000_framedata frame; |
| 2061 | CORE_ADDR limit_pc, func_addr, func_end_addr = 0; |
| 2062 | |
| 2063 | /* See if we can determine the end of the prologue via the symbol table. |
| 2064 | If so, then return either PC, or the PC after the prologue, whichever |
| 2065 | is greater. */ |
| 2066 | if (find_pc_partial_function (pc, NULL, &func_addr, &func_end_addr)) |
| 2067 | { |
| 2068 | CORE_ADDR post_prologue_pc |
| 2069 | = skip_prologue_using_sal (gdbarch, func_addr); |
| 2070 | if (post_prologue_pc != 0) |
| 2071 | return std::max (pc, post_prologue_pc); |
| 2072 | } |
| 2073 | |
| 2074 | /* Can't determine prologue from the symbol table, need to examine |
| 2075 | instructions. */ |
| 2076 | |
| 2077 | /* Find an upper limit on the function prologue using the debug |
| 2078 | information. If the debug information could not be used to provide |
| 2079 | that bound, then use an arbitrary large number as the upper bound. */ |
| 2080 | limit_pc = skip_prologue_using_sal (gdbarch, pc); |
| 2081 | if (limit_pc == 0) |
| 2082 | limit_pc = pc + 100; /* Magic. */ |
| 2083 | |
| 2084 | /* Do not allow limit_pc to be past the function end, if we know |
| 2085 | where that end is... */ |
| 2086 | if (func_end_addr && limit_pc > func_end_addr) |
| 2087 | limit_pc = func_end_addr; |
| 2088 | |
| 2089 | pc = skip_prologue (gdbarch, pc, limit_pc, &frame); |
| 2090 | return pc; |
| 2091 | } |
| 2092 | |
| 2093 | /* When compiling for EABI, some versions of GCC emit a call to __eabi |
| 2094 | in the prologue of main(). |
| 2095 | |
| 2096 | The function below examines the code pointed at by PC and checks to |
| 2097 | see if it corresponds to a call to __eabi. If so, it returns the |
| 2098 | address of the instruction following that call. Otherwise, it simply |
| 2099 | returns PC. */ |
| 2100 | |
| 2101 | static CORE_ADDR |
| 2102 | rs6000_skip_main_prologue (struct gdbarch *gdbarch, CORE_ADDR pc) |
| 2103 | { |
| 2104 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 2105 | gdb_byte buf[4]; |
| 2106 | unsigned long op; |
| 2107 | |
| 2108 | if (target_read_memory (pc, buf, 4)) |
| 2109 | return pc; |
| 2110 | op = extract_unsigned_integer (buf, 4, byte_order); |
| 2111 | |
| 2112 | if ((op & BL_MASK) == BL_INSTRUCTION) |
| 2113 | { |
| 2114 | CORE_ADDR displ = op & BL_DISPLACEMENT_MASK; |
| 2115 | CORE_ADDR call_dest = pc + 4 + displ; |
| 2116 | struct bound_minimal_symbol s = lookup_minimal_symbol_by_pc (call_dest); |
| 2117 | |
| 2118 | /* We check for ___eabi (three leading underscores) in addition |
| 2119 | to __eabi in case the GCC option "-fleading-underscore" was |
| 2120 | used to compile the program. */ |
| 2121 | if (s.minsym != NULL |
| 2122 | && MSYMBOL_LINKAGE_NAME (s.minsym) != NULL |
| 2123 | && (strcmp (MSYMBOL_LINKAGE_NAME (s.minsym), "__eabi") == 0 |
| 2124 | || strcmp (MSYMBOL_LINKAGE_NAME (s.minsym), "___eabi") == 0)) |
| 2125 | pc += 4; |
| 2126 | } |
| 2127 | return pc; |
| 2128 | } |
| 2129 | |
| 2130 | /* All the ABI's require 16 byte alignment. */ |
| 2131 | static CORE_ADDR |
| 2132 | rs6000_frame_align (struct gdbarch *gdbarch, CORE_ADDR addr) |
| 2133 | { |
| 2134 | return (addr & -16); |
| 2135 | } |
| 2136 | |
| 2137 | /* Return whether handle_inferior_event() should proceed through code |
| 2138 | starting at PC in function NAME when stepping. |
| 2139 | |
| 2140 | The AIX -bbigtoc linker option generates functions @FIX0, @FIX1, etc. to |
| 2141 | handle memory references that are too distant to fit in instructions |
| 2142 | generated by the compiler. For example, if 'foo' in the following |
| 2143 | instruction: |
| 2144 | |
| 2145 | lwz r9,foo(r2) |
| 2146 | |
| 2147 | is greater than 32767, the linker might replace the lwz with a branch to |
| 2148 | somewhere in @FIX1 that does the load in 2 instructions and then branches |
| 2149 | back to where execution should continue. |
| 2150 | |
| 2151 | GDB should silently step over @FIX code, just like AIX dbx does. |
| 2152 | Unfortunately, the linker uses the "b" instruction for the |
| 2153 | branches, meaning that the link register doesn't get set. |
| 2154 | Therefore, GDB's usual step_over_function () mechanism won't work. |
| 2155 | |
| 2156 | Instead, use the gdbarch_skip_trampoline_code and |
| 2157 | gdbarch_skip_trampoline_code hooks in handle_inferior_event() to skip past |
| 2158 | @FIX code. */ |
| 2159 | |
| 2160 | static int |
| 2161 | rs6000_in_solib_return_trampoline (struct gdbarch *gdbarch, |
| 2162 | CORE_ADDR pc, const char *name) |
| 2163 | { |
| 2164 | return name && startswith (name, "@FIX"); |
| 2165 | } |
| 2166 | |
| 2167 | /* Skip code that the user doesn't want to see when stepping: |
| 2168 | |
| 2169 | 1. Indirect function calls use a piece of trampoline code to do context |
| 2170 | switching, i.e. to set the new TOC table. Skip such code if we are on |
| 2171 | its first instruction (as when we have single-stepped to here). |
| 2172 | |
| 2173 | 2. Skip shared library trampoline code (which is different from |
| 2174 | indirect function call trampolines). |
| 2175 | |
| 2176 | 3. Skip bigtoc fixup code. |
| 2177 | |
| 2178 | Result is desired PC to step until, or NULL if we are not in |
| 2179 | code that should be skipped. */ |
| 2180 | |
| 2181 | static CORE_ADDR |
| 2182 | rs6000_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc) |
| 2183 | { |
| 2184 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 2185 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2186 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 2187 | unsigned int ii, op; |
| 2188 | int rel; |
| 2189 | CORE_ADDR solib_target_pc; |
| 2190 | struct bound_minimal_symbol msymbol; |
| 2191 | |
| 2192 | static unsigned trampoline_code[] = |
| 2193 | { |
| 2194 | 0x800b0000, /* l r0,0x0(r11) */ |
| 2195 | 0x90410014, /* st r2,0x14(r1) */ |
| 2196 | 0x7c0903a6, /* mtctr r0 */ |
| 2197 | 0x804b0004, /* l r2,0x4(r11) */ |
| 2198 | 0x816b0008, /* l r11,0x8(r11) */ |
| 2199 | 0x4e800420, /* bctr */ |
| 2200 | 0x4e800020, /* br */ |
| 2201 | 0 |
| 2202 | }; |
| 2203 | |
| 2204 | /* Check for bigtoc fixup code. */ |
| 2205 | msymbol = lookup_minimal_symbol_by_pc (pc); |
| 2206 | if (msymbol.minsym |
| 2207 | && rs6000_in_solib_return_trampoline (gdbarch, pc, |
| 2208 | MSYMBOL_LINKAGE_NAME (msymbol.minsym))) |
| 2209 | { |
| 2210 | /* Double-check that the third instruction from PC is relative "b". */ |
| 2211 | op = read_memory_integer (pc + 8, 4, byte_order); |
| 2212 | if ((op & 0xfc000003) == 0x48000000) |
| 2213 | { |
| 2214 | /* Extract bits 6-29 as a signed 24-bit relative word address and |
| 2215 | add it to the containing PC. */ |
| 2216 | rel = ((int)(op << 6) >> 6); |
| 2217 | return pc + 8 + rel; |
| 2218 | } |
| 2219 | } |
| 2220 | |
| 2221 | /* If pc is in a shared library trampoline, return its target. */ |
| 2222 | solib_target_pc = find_solib_trampoline_target (frame, pc); |
| 2223 | if (solib_target_pc) |
| 2224 | return solib_target_pc; |
| 2225 | |
| 2226 | for (ii = 0; trampoline_code[ii]; ++ii) |
| 2227 | { |
| 2228 | op = read_memory_integer (pc + (ii * 4), 4, byte_order); |
| 2229 | if (op != trampoline_code[ii]) |
| 2230 | return 0; |
| 2231 | } |
| 2232 | ii = get_frame_register_unsigned (frame, 11); /* r11 holds destination |
| 2233 | addr. */ |
| 2234 | pc = read_memory_unsigned_integer (ii, tdep->wordsize, byte_order); |
| 2235 | return pc; |
| 2236 | } |
| 2237 | |
| 2238 | /* ISA-specific vector types. */ |
| 2239 | |
| 2240 | static struct type * |
| 2241 | rs6000_builtin_type_vec64 (struct gdbarch *gdbarch) |
| 2242 | { |
| 2243 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2244 | |
| 2245 | if (!tdep->ppc_builtin_type_vec64) |
| 2246 | { |
| 2247 | const struct builtin_type *bt = builtin_type (gdbarch); |
| 2248 | |
| 2249 | /* The type we're building is this: */ |
| 2250 | #if 0 |
| 2251 | union __gdb_builtin_type_vec64 |
| 2252 | { |
| 2253 | int64_t uint64; |
| 2254 | float v2_float[2]; |
| 2255 | int32_t v2_int32[2]; |
| 2256 | int16_t v4_int16[4]; |
| 2257 | int8_t v8_int8[8]; |
| 2258 | }; |
| 2259 | #endif |
| 2260 | |
| 2261 | struct type *t; |
| 2262 | |
| 2263 | t = arch_composite_type (gdbarch, |
| 2264 | "__ppc_builtin_type_vec64", TYPE_CODE_UNION); |
| 2265 | append_composite_type_field (t, "uint64", bt->builtin_int64); |
| 2266 | append_composite_type_field (t, "v2_float", |
| 2267 | init_vector_type (bt->builtin_float, 2)); |
| 2268 | append_composite_type_field (t, "v2_int32", |
| 2269 | init_vector_type (bt->builtin_int32, 2)); |
| 2270 | append_composite_type_field (t, "v4_int16", |
| 2271 | init_vector_type (bt->builtin_int16, 4)); |
| 2272 | append_composite_type_field (t, "v8_int8", |
| 2273 | init_vector_type (bt->builtin_int8, 8)); |
| 2274 | |
| 2275 | TYPE_VECTOR (t) = 1; |
| 2276 | TYPE_NAME (t) = "ppc_builtin_type_vec64"; |
| 2277 | tdep->ppc_builtin_type_vec64 = t; |
| 2278 | } |
| 2279 | |
| 2280 | return tdep->ppc_builtin_type_vec64; |
| 2281 | } |
| 2282 | |
| 2283 | /* Vector 128 type. */ |
| 2284 | |
| 2285 | static struct type * |
| 2286 | rs6000_builtin_type_vec128 (struct gdbarch *gdbarch) |
| 2287 | { |
| 2288 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2289 | |
| 2290 | if (!tdep->ppc_builtin_type_vec128) |
| 2291 | { |
| 2292 | const struct builtin_type *bt = builtin_type (gdbarch); |
| 2293 | |
| 2294 | /* The type we're building is this |
| 2295 | |
| 2296 | type = union __ppc_builtin_type_vec128 { |
| 2297 | uint128_t uint128; |
| 2298 | double v2_double[2]; |
| 2299 | float v4_float[4]; |
| 2300 | int32_t v4_int32[4]; |
| 2301 | int16_t v8_int16[8]; |
| 2302 | int8_t v16_int8[16]; |
| 2303 | } |
| 2304 | */ |
| 2305 | |
| 2306 | struct type *t; |
| 2307 | |
| 2308 | t = arch_composite_type (gdbarch, |
| 2309 | "__ppc_builtin_type_vec128", TYPE_CODE_UNION); |
| 2310 | append_composite_type_field (t, "uint128", bt->builtin_uint128); |
| 2311 | append_composite_type_field (t, "v2_double", |
| 2312 | init_vector_type (bt->builtin_double, 2)); |
| 2313 | append_composite_type_field (t, "v4_float", |
| 2314 | init_vector_type (bt->builtin_float, 4)); |
| 2315 | append_composite_type_field (t, "v4_int32", |
| 2316 | init_vector_type (bt->builtin_int32, 4)); |
| 2317 | append_composite_type_field (t, "v8_int16", |
| 2318 | init_vector_type (bt->builtin_int16, 8)); |
| 2319 | append_composite_type_field (t, "v16_int8", |
| 2320 | init_vector_type (bt->builtin_int8, 16)); |
| 2321 | |
| 2322 | TYPE_VECTOR (t) = 1; |
| 2323 | TYPE_NAME (t) = "ppc_builtin_type_vec128"; |
| 2324 | tdep->ppc_builtin_type_vec128 = t; |
| 2325 | } |
| 2326 | |
| 2327 | return tdep->ppc_builtin_type_vec128; |
| 2328 | } |
| 2329 | |
| 2330 | /* Return the name of register number REGNO, or the empty string if it |
| 2331 | is an anonymous register. */ |
| 2332 | |
| 2333 | static const char * |
| 2334 | rs6000_register_name (struct gdbarch *gdbarch, int regno) |
| 2335 | { |
| 2336 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2337 | |
| 2338 | /* The upper half "registers" have names in the XML description, |
| 2339 | but we present only the low GPRs and the full 64-bit registers |
| 2340 | to the user. */ |
| 2341 | if (tdep->ppc_ev0_upper_regnum >= 0 |
| 2342 | && tdep->ppc_ev0_upper_regnum <= regno |
| 2343 | && regno < tdep->ppc_ev0_upper_regnum + ppc_num_gprs) |
| 2344 | return ""; |
| 2345 | |
| 2346 | /* Hide the upper halves of the vs0~vs31 registers. */ |
| 2347 | if (tdep->ppc_vsr0_regnum >= 0 |
| 2348 | && tdep->ppc_vsr0_upper_regnum <= regno |
| 2349 | && regno < tdep->ppc_vsr0_upper_regnum + ppc_num_gprs) |
| 2350 | return ""; |
| 2351 | |
| 2352 | /* Hide the upper halves of the cvs0~cvs31 registers. */ |
| 2353 | if (PPC_CVSR0_UPPER_REGNUM <= regno |
| 2354 | && regno < PPC_CVSR0_UPPER_REGNUM + ppc_num_gprs) |
| 2355 | return ""; |
| 2356 | |
| 2357 | /* Check if the SPE pseudo registers are available. */ |
| 2358 | if (IS_SPE_PSEUDOREG (tdep, regno)) |
| 2359 | { |
| 2360 | static const char *const spe_regnames[] = { |
| 2361 | "ev0", "ev1", "ev2", "ev3", "ev4", "ev5", "ev6", "ev7", |
| 2362 | "ev8", "ev9", "ev10", "ev11", "ev12", "ev13", "ev14", "ev15", |
| 2363 | "ev16", "ev17", "ev18", "ev19", "ev20", "ev21", "ev22", "ev23", |
| 2364 | "ev24", "ev25", "ev26", "ev27", "ev28", "ev29", "ev30", "ev31", |
| 2365 | }; |
| 2366 | return spe_regnames[regno - tdep->ppc_ev0_regnum]; |
| 2367 | } |
| 2368 | |
| 2369 | /* Check if the decimal128 pseudo-registers are available. */ |
| 2370 | if (IS_DFP_PSEUDOREG (tdep, regno)) |
| 2371 | { |
| 2372 | static const char *const dfp128_regnames[] = { |
| 2373 | "dl0", "dl1", "dl2", "dl3", |
| 2374 | "dl4", "dl5", "dl6", "dl7", |
| 2375 | "dl8", "dl9", "dl10", "dl11", |
| 2376 | "dl12", "dl13", "dl14", "dl15" |
| 2377 | }; |
| 2378 | return dfp128_regnames[regno - tdep->ppc_dl0_regnum]; |
| 2379 | } |
| 2380 | |
| 2381 | /* Check if this is a vX alias for a raw vrX vector register. */ |
| 2382 | if (IS_V_ALIAS_PSEUDOREG (tdep, regno)) |
| 2383 | { |
| 2384 | static const char *const vector_alias_regnames[] = { |
| 2385 | "v0", "v1", "v2", "v3", "v4", "v5", "v6", "v7", |
| 2386 | "v8", "v9", "v10", "v11", "v12", "v13", "v14", "v15", |
| 2387 | "v16", "v17", "v18", "v19", "v20", "v21", "v22", "v23", |
| 2388 | "v24", "v25", "v26", "v27", "v28", "v29", "v30", "v31" |
| 2389 | }; |
| 2390 | return vector_alias_regnames[regno - tdep->ppc_v0_alias_regnum]; |
| 2391 | } |
| 2392 | |
| 2393 | /* Check if this is a VSX pseudo-register. */ |
| 2394 | if (IS_VSX_PSEUDOREG (tdep, regno)) |
| 2395 | { |
| 2396 | static const char *const vsx_regnames[] = { |
| 2397 | "vs0", "vs1", "vs2", "vs3", "vs4", "vs5", "vs6", "vs7", |
| 2398 | "vs8", "vs9", "vs10", "vs11", "vs12", "vs13", "vs14", |
| 2399 | "vs15", "vs16", "vs17", "vs18", "vs19", "vs20", "vs21", |
| 2400 | "vs22", "vs23", "vs24", "vs25", "vs26", "vs27", "vs28", |
| 2401 | "vs29", "vs30", "vs31", "vs32", "vs33", "vs34", "vs35", |
| 2402 | "vs36", "vs37", "vs38", "vs39", "vs40", "vs41", "vs42", |
| 2403 | "vs43", "vs44", "vs45", "vs46", "vs47", "vs48", "vs49", |
| 2404 | "vs50", "vs51", "vs52", "vs53", "vs54", "vs55", "vs56", |
| 2405 | "vs57", "vs58", "vs59", "vs60", "vs61", "vs62", "vs63" |
| 2406 | }; |
| 2407 | return vsx_regnames[regno - tdep->ppc_vsr0_regnum]; |
| 2408 | } |
| 2409 | |
| 2410 | /* Check if the this is a Extended FP pseudo-register. */ |
| 2411 | if (IS_EFP_PSEUDOREG (tdep, regno)) |
| 2412 | { |
| 2413 | static const char *const efpr_regnames[] = { |
| 2414 | "f32", "f33", "f34", "f35", "f36", "f37", "f38", |
| 2415 | "f39", "f40", "f41", "f42", "f43", "f44", "f45", |
| 2416 | "f46", "f47", "f48", "f49", "f50", "f51", |
| 2417 | "f52", "f53", "f54", "f55", "f56", "f57", |
| 2418 | "f58", "f59", "f60", "f61", "f62", "f63" |
| 2419 | }; |
| 2420 | return efpr_regnames[regno - tdep->ppc_efpr0_regnum]; |
| 2421 | } |
| 2422 | |
| 2423 | /* Check if this is a Checkpointed DFP pseudo-register. */ |
| 2424 | if (IS_CDFP_PSEUDOREG (tdep, regno)) |
| 2425 | { |
| 2426 | static const char *const cdfp128_regnames[] = { |
| 2427 | "cdl0", "cdl1", "cdl2", "cdl3", |
| 2428 | "cdl4", "cdl5", "cdl6", "cdl7", |
| 2429 | "cdl8", "cdl9", "cdl10", "cdl11", |
| 2430 | "cdl12", "cdl13", "cdl14", "cdl15" |
| 2431 | }; |
| 2432 | return cdfp128_regnames[regno - tdep->ppc_cdl0_regnum]; |
| 2433 | } |
| 2434 | |
| 2435 | /* Check if this is a Checkpointed VSX pseudo-register. */ |
| 2436 | if (IS_CVSX_PSEUDOREG (tdep, regno)) |
| 2437 | { |
| 2438 | static const char *const cvsx_regnames[] = { |
| 2439 | "cvs0", "cvs1", "cvs2", "cvs3", "cvs4", "cvs5", "cvs6", "cvs7", |
| 2440 | "cvs8", "cvs9", "cvs10", "cvs11", "cvs12", "cvs13", "cvs14", |
| 2441 | "cvs15", "cvs16", "cvs17", "cvs18", "cvs19", "cvs20", "cvs21", |
| 2442 | "cvs22", "cvs23", "cvs24", "cvs25", "cvs26", "cvs27", "cvs28", |
| 2443 | "cvs29", "cvs30", "cvs31", "cvs32", "cvs33", "cvs34", "cvs35", |
| 2444 | "cvs36", "cvs37", "cvs38", "cvs39", "cvs40", "cvs41", "cvs42", |
| 2445 | "cvs43", "cvs44", "cvs45", "cvs46", "cvs47", "cvs48", "cvs49", |
| 2446 | "cvs50", "cvs51", "cvs52", "cvs53", "cvs54", "cvs55", "cvs56", |
| 2447 | "cvs57", "cvs58", "cvs59", "cvs60", "cvs61", "cvs62", "cvs63" |
| 2448 | }; |
| 2449 | return cvsx_regnames[regno - tdep->ppc_cvsr0_regnum]; |
| 2450 | } |
| 2451 | |
| 2452 | /* Check if the this is a Checkpointed Extended FP pseudo-register. */ |
| 2453 | if (IS_CEFP_PSEUDOREG (tdep, regno)) |
| 2454 | { |
| 2455 | static const char *const cefpr_regnames[] = { |
| 2456 | "cf32", "cf33", "cf34", "cf35", "cf36", "cf37", "cf38", |
| 2457 | "cf39", "cf40", "cf41", "cf42", "cf43", "cf44", "cf45", |
| 2458 | "cf46", "cf47", "cf48", "cf49", "cf50", "cf51", |
| 2459 | "cf52", "cf53", "cf54", "cf55", "cf56", "cf57", |
| 2460 | "cf58", "cf59", "cf60", "cf61", "cf62", "cf63" |
| 2461 | }; |
| 2462 | return cefpr_regnames[regno - tdep->ppc_cefpr0_regnum]; |
| 2463 | } |
| 2464 | |
| 2465 | return tdesc_register_name (gdbarch, regno); |
| 2466 | } |
| 2467 | |
| 2468 | /* Return the GDB type object for the "standard" data type of data in |
| 2469 | register N. */ |
| 2470 | |
| 2471 | static struct type * |
| 2472 | rs6000_pseudo_register_type (struct gdbarch *gdbarch, int regnum) |
| 2473 | { |
| 2474 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2475 | |
| 2476 | /* These are the e500 pseudo-registers. */ |
| 2477 | if (IS_SPE_PSEUDOREG (tdep, regnum)) |
| 2478 | return rs6000_builtin_type_vec64 (gdbarch); |
| 2479 | else if (IS_DFP_PSEUDOREG (tdep, regnum) |
| 2480 | || IS_CDFP_PSEUDOREG (tdep, regnum)) |
| 2481 | /* PPC decimal128 pseudo-registers. */ |
| 2482 | return builtin_type (gdbarch)->builtin_declong; |
| 2483 | else if (IS_V_ALIAS_PSEUDOREG (tdep, regnum)) |
| 2484 | return gdbarch_register_type (gdbarch, |
| 2485 | tdep->ppc_vr0_regnum |
| 2486 | + (regnum |
| 2487 | - tdep->ppc_v0_alias_regnum)); |
| 2488 | else if (IS_VSX_PSEUDOREG (tdep, regnum) |
| 2489 | || IS_CVSX_PSEUDOREG (tdep, regnum)) |
| 2490 | /* POWER7 VSX pseudo-registers. */ |
| 2491 | return rs6000_builtin_type_vec128 (gdbarch); |
| 2492 | else if (IS_EFP_PSEUDOREG (tdep, regnum) |
| 2493 | || IS_CEFP_PSEUDOREG (tdep, regnum)) |
| 2494 | /* POWER7 Extended FP pseudo-registers. */ |
| 2495 | return builtin_type (gdbarch)->builtin_double; |
| 2496 | else |
| 2497 | internal_error (__FILE__, __LINE__, |
| 2498 | _("rs6000_pseudo_register_type: " |
| 2499 | "called on unexpected register '%s' (%d)"), |
| 2500 | gdbarch_register_name (gdbarch, regnum), regnum); |
| 2501 | } |
| 2502 | |
| 2503 | /* Check if REGNUM is a member of REGGROUP. We only need to handle |
| 2504 | the vX aliases for the vector registers by always returning false |
| 2505 | to avoid duplicated information in "info register vector/all", |
| 2506 | since the raw vrX registers will already show in these cases. For |
| 2507 | other pseudo-registers we use the default membership function. */ |
| 2508 | |
| 2509 | static int |
| 2510 | rs6000_pseudo_register_reggroup_p (struct gdbarch *gdbarch, int regnum, |
| 2511 | struct reggroup *group) |
| 2512 | { |
| 2513 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2514 | |
| 2515 | if (IS_V_ALIAS_PSEUDOREG (tdep, regnum)) |
| 2516 | return 0; |
| 2517 | else |
| 2518 | return default_register_reggroup_p (gdbarch, regnum, group); |
| 2519 | } |
| 2520 | |
| 2521 | /* The register format for RS/6000 floating point registers is always |
| 2522 | double, we need a conversion if the memory format is float. */ |
| 2523 | |
| 2524 | static int |
| 2525 | rs6000_convert_register_p (struct gdbarch *gdbarch, int regnum, |
| 2526 | struct type *type) |
| 2527 | { |
| 2528 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2529 | |
| 2530 | return (tdep->ppc_fp0_regnum >= 0 |
| 2531 | && regnum >= tdep->ppc_fp0_regnum |
| 2532 | && regnum < tdep->ppc_fp0_regnum + ppc_num_fprs |
| 2533 | && TYPE_CODE (type) == TYPE_CODE_FLT |
| 2534 | && TYPE_LENGTH (type) |
| 2535 | != TYPE_LENGTH (builtin_type (gdbarch)->builtin_double)); |
| 2536 | } |
| 2537 | |
| 2538 | static int |
| 2539 | rs6000_register_to_value (struct frame_info *frame, |
| 2540 | int regnum, |
| 2541 | struct type *type, |
| 2542 | gdb_byte *to, |
| 2543 | int *optimizedp, int *unavailablep) |
| 2544 | { |
| 2545 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 2546 | gdb_byte from[PPC_MAX_REGISTER_SIZE]; |
| 2547 | |
| 2548 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT); |
| 2549 | |
| 2550 | if (!get_frame_register_bytes (frame, regnum, 0, |
| 2551 | register_size (gdbarch, regnum), |
| 2552 | from, optimizedp, unavailablep)) |
| 2553 | return 0; |
| 2554 | |
| 2555 | target_float_convert (from, builtin_type (gdbarch)->builtin_double, |
| 2556 | to, type); |
| 2557 | *optimizedp = *unavailablep = 0; |
| 2558 | return 1; |
| 2559 | } |
| 2560 | |
| 2561 | static void |
| 2562 | rs6000_value_to_register (struct frame_info *frame, |
| 2563 | int regnum, |
| 2564 | struct type *type, |
| 2565 | const gdb_byte *from) |
| 2566 | { |
| 2567 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 2568 | gdb_byte to[PPC_MAX_REGISTER_SIZE]; |
| 2569 | |
| 2570 | gdb_assert (TYPE_CODE (type) == TYPE_CODE_FLT); |
| 2571 | |
| 2572 | target_float_convert (from, type, |
| 2573 | to, builtin_type (gdbarch)->builtin_double); |
| 2574 | put_frame_register (frame, regnum, to); |
| 2575 | } |
| 2576 | |
| 2577 | /* The type of a function that moves the value of REG between CACHE |
| 2578 | or BUF --- in either direction. */ |
| 2579 | typedef enum register_status (*move_ev_register_func) (struct regcache *, |
| 2580 | int, void *); |
| 2581 | |
| 2582 | /* Move SPE vector register values between a 64-bit buffer and the two |
| 2583 | 32-bit raw register halves in a regcache. This function handles |
| 2584 | both splitting a 64-bit value into two 32-bit halves, and joining |
| 2585 | two halves into a whole 64-bit value, depending on the function |
| 2586 | passed as the MOVE argument. |
| 2587 | |
| 2588 | EV_REG must be the number of an SPE evN vector register --- a |
| 2589 | pseudoregister. REGCACHE must be a regcache, and BUFFER must be a |
| 2590 | 64-bit buffer. |
| 2591 | |
| 2592 | Call MOVE once for each 32-bit half of that register, passing |
| 2593 | REGCACHE, the number of the raw register corresponding to that |
| 2594 | half, and the address of the appropriate half of BUFFER. |
| 2595 | |
| 2596 | For example, passing 'regcache_raw_read' as the MOVE function will |
| 2597 | fill BUFFER with the full 64-bit contents of EV_REG. Or, passing |
| 2598 | 'regcache_raw_supply' will supply the contents of BUFFER to the |
| 2599 | appropriate pair of raw registers in REGCACHE. |
| 2600 | |
| 2601 | You may need to cast away some 'const' qualifiers when passing |
| 2602 | MOVE, since this function can't tell at compile-time which of |
| 2603 | REGCACHE or BUFFER is acting as the source of the data. If C had |
| 2604 | co-variant type qualifiers, ... */ |
| 2605 | |
| 2606 | static enum register_status |
| 2607 | e500_move_ev_register (move_ev_register_func move, |
| 2608 | struct regcache *regcache, int ev_reg, void *buffer) |
| 2609 | { |
| 2610 | struct gdbarch *arch = regcache->arch (); |
| 2611 | struct gdbarch_tdep *tdep = gdbarch_tdep (arch); |
| 2612 | int reg_index; |
| 2613 | gdb_byte *byte_buffer = (gdb_byte *) buffer; |
| 2614 | enum register_status status; |
| 2615 | |
| 2616 | gdb_assert (IS_SPE_PSEUDOREG (tdep, ev_reg)); |
| 2617 | |
| 2618 | reg_index = ev_reg - tdep->ppc_ev0_regnum; |
| 2619 | |
| 2620 | if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG) |
| 2621 | { |
| 2622 | status = move (regcache, tdep->ppc_ev0_upper_regnum + reg_index, |
| 2623 | byte_buffer); |
| 2624 | if (status == REG_VALID) |
| 2625 | status = move (regcache, tdep->ppc_gp0_regnum + reg_index, |
| 2626 | byte_buffer + 4); |
| 2627 | } |
| 2628 | else |
| 2629 | { |
| 2630 | status = move (regcache, tdep->ppc_gp0_regnum + reg_index, byte_buffer); |
| 2631 | if (status == REG_VALID) |
| 2632 | status = move (regcache, tdep->ppc_ev0_upper_regnum + reg_index, |
| 2633 | byte_buffer + 4); |
| 2634 | } |
| 2635 | |
| 2636 | return status; |
| 2637 | } |
| 2638 | |
| 2639 | static enum register_status |
| 2640 | do_regcache_raw_write (struct regcache *regcache, int regnum, void *buffer) |
| 2641 | { |
| 2642 | regcache->raw_write (regnum, (const gdb_byte *) buffer); |
| 2643 | |
| 2644 | return REG_VALID; |
| 2645 | } |
| 2646 | |
| 2647 | static enum register_status |
| 2648 | e500_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, |
| 2649 | int ev_reg, gdb_byte *buffer) |
| 2650 | { |
| 2651 | struct gdbarch *arch = regcache->arch (); |
| 2652 | struct gdbarch_tdep *tdep = gdbarch_tdep (arch); |
| 2653 | int reg_index; |
| 2654 | enum register_status status; |
| 2655 | |
| 2656 | gdb_assert (IS_SPE_PSEUDOREG (tdep, ev_reg)); |
| 2657 | |
| 2658 | reg_index = ev_reg - tdep->ppc_ev0_regnum; |
| 2659 | |
| 2660 | if (gdbarch_byte_order (arch) == BFD_ENDIAN_BIG) |
| 2661 | { |
| 2662 | status = regcache->raw_read (tdep->ppc_ev0_upper_regnum + reg_index, |
| 2663 | buffer); |
| 2664 | if (status == REG_VALID) |
| 2665 | status = regcache->raw_read (tdep->ppc_gp0_regnum + reg_index, |
| 2666 | buffer + 4); |
| 2667 | } |
| 2668 | else |
| 2669 | { |
| 2670 | status = regcache->raw_read (tdep->ppc_gp0_regnum + reg_index, buffer); |
| 2671 | if (status == REG_VALID) |
| 2672 | status = regcache->raw_read (tdep->ppc_ev0_upper_regnum + reg_index, |
| 2673 | buffer + 4); |
| 2674 | } |
| 2675 | |
| 2676 | return status; |
| 2677 | |
| 2678 | } |
| 2679 | |
| 2680 | static void |
| 2681 | e500_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2682 | int reg_nr, const gdb_byte *buffer) |
| 2683 | { |
| 2684 | e500_move_ev_register (do_regcache_raw_write, regcache, |
| 2685 | reg_nr, (void *) buffer); |
| 2686 | } |
| 2687 | |
| 2688 | /* Read method for DFP pseudo-registers. */ |
| 2689 | static enum register_status |
| 2690 | dfp_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, |
| 2691 | int reg_nr, gdb_byte *buffer) |
| 2692 | { |
| 2693 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2694 | int reg_index, fp0; |
| 2695 | enum register_status status; |
| 2696 | |
| 2697 | if (IS_DFP_PSEUDOREG (tdep, reg_nr)) |
| 2698 | { |
| 2699 | reg_index = reg_nr - tdep->ppc_dl0_regnum; |
| 2700 | fp0 = PPC_F0_REGNUM; |
| 2701 | } |
| 2702 | else |
| 2703 | { |
| 2704 | gdb_assert (IS_CDFP_PSEUDOREG (tdep, reg_nr)); |
| 2705 | |
| 2706 | reg_index = reg_nr - tdep->ppc_cdl0_regnum; |
| 2707 | fp0 = PPC_CF0_REGNUM; |
| 2708 | } |
| 2709 | |
| 2710 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 2711 | { |
| 2712 | /* Read two FP registers to form a whole dl register. */ |
| 2713 | status = regcache->raw_read (fp0 + 2 * reg_index, buffer); |
| 2714 | if (status == REG_VALID) |
| 2715 | status = regcache->raw_read (fp0 + 2 * reg_index + 1, |
| 2716 | buffer + 8); |
| 2717 | } |
| 2718 | else |
| 2719 | { |
| 2720 | status = regcache->raw_read (fp0 + 2 * reg_index + 1, buffer); |
| 2721 | if (status == REG_VALID) |
| 2722 | status = regcache->raw_read (fp0 + 2 * reg_index, buffer + 8); |
| 2723 | } |
| 2724 | |
| 2725 | return status; |
| 2726 | } |
| 2727 | |
| 2728 | /* Write method for DFP pseudo-registers. */ |
| 2729 | static void |
| 2730 | dfp_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2731 | int reg_nr, const gdb_byte *buffer) |
| 2732 | { |
| 2733 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2734 | int reg_index, fp0; |
| 2735 | |
| 2736 | if (IS_DFP_PSEUDOREG (tdep, reg_nr)) |
| 2737 | { |
| 2738 | reg_index = reg_nr - tdep->ppc_dl0_regnum; |
| 2739 | fp0 = PPC_F0_REGNUM; |
| 2740 | } |
| 2741 | else |
| 2742 | { |
| 2743 | gdb_assert (IS_CDFP_PSEUDOREG (tdep, reg_nr)); |
| 2744 | |
| 2745 | reg_index = reg_nr - tdep->ppc_cdl0_regnum; |
| 2746 | fp0 = PPC_CF0_REGNUM; |
| 2747 | } |
| 2748 | |
| 2749 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 2750 | { |
| 2751 | /* Write each half of the dl register into a separate |
| 2752 | FP register. */ |
| 2753 | regcache->raw_write (fp0 + 2 * reg_index, buffer); |
| 2754 | regcache->raw_write (fp0 + 2 * reg_index + 1, buffer + 8); |
| 2755 | } |
| 2756 | else |
| 2757 | { |
| 2758 | regcache->raw_write (fp0 + 2 * reg_index + 1, buffer); |
| 2759 | regcache->raw_write (fp0 + 2 * reg_index, buffer + 8); |
| 2760 | } |
| 2761 | } |
| 2762 | |
| 2763 | /* Read method for the vX aliases for the raw vrX registers. */ |
| 2764 | |
| 2765 | static enum register_status |
| 2766 | v_alias_pseudo_register_read (struct gdbarch *gdbarch, |
| 2767 | readable_regcache *regcache, int reg_nr, |
| 2768 | gdb_byte *buffer) |
| 2769 | { |
| 2770 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2771 | gdb_assert (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)); |
| 2772 | |
| 2773 | return regcache->raw_read (tdep->ppc_vr0_regnum |
| 2774 | + (reg_nr - tdep->ppc_v0_alias_regnum), |
| 2775 | buffer); |
| 2776 | } |
| 2777 | |
| 2778 | /* Write method for the vX aliases for the raw vrX registers. */ |
| 2779 | |
| 2780 | static void |
| 2781 | v_alias_pseudo_register_write (struct gdbarch *gdbarch, |
| 2782 | struct regcache *regcache, |
| 2783 | int reg_nr, const gdb_byte *buffer) |
| 2784 | { |
| 2785 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2786 | gdb_assert (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)); |
| 2787 | |
| 2788 | regcache->raw_write (tdep->ppc_vr0_regnum |
| 2789 | + (reg_nr - tdep->ppc_v0_alias_regnum), buffer); |
| 2790 | } |
| 2791 | |
| 2792 | /* Read method for POWER7 VSX pseudo-registers. */ |
| 2793 | static enum register_status |
| 2794 | vsx_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, |
| 2795 | int reg_nr, gdb_byte *buffer) |
| 2796 | { |
| 2797 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2798 | int reg_index, vr0, fp0, vsr0_upper; |
| 2799 | enum register_status status; |
| 2800 | |
| 2801 | if (IS_VSX_PSEUDOREG (tdep, reg_nr)) |
| 2802 | { |
| 2803 | reg_index = reg_nr - tdep->ppc_vsr0_regnum; |
| 2804 | vr0 = PPC_VR0_REGNUM; |
| 2805 | fp0 = PPC_F0_REGNUM; |
| 2806 | vsr0_upper = PPC_VSR0_UPPER_REGNUM; |
| 2807 | } |
| 2808 | else |
| 2809 | { |
| 2810 | gdb_assert (IS_CVSX_PSEUDOREG (tdep, reg_nr)); |
| 2811 | |
| 2812 | reg_index = reg_nr - tdep->ppc_cvsr0_regnum; |
| 2813 | vr0 = PPC_CVR0_REGNUM; |
| 2814 | fp0 = PPC_CF0_REGNUM; |
| 2815 | vsr0_upper = PPC_CVSR0_UPPER_REGNUM; |
| 2816 | } |
| 2817 | |
| 2818 | /* Read the portion that overlaps the VMX registers. */ |
| 2819 | if (reg_index > 31) |
| 2820 | status = regcache->raw_read (vr0 + reg_index - 32, buffer); |
| 2821 | else |
| 2822 | /* Read the portion that overlaps the FPR registers. */ |
| 2823 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 2824 | { |
| 2825 | status = regcache->raw_read (fp0 + reg_index, buffer); |
| 2826 | if (status == REG_VALID) |
| 2827 | status = regcache->raw_read (vsr0_upper + reg_index, |
| 2828 | buffer + 8); |
| 2829 | } |
| 2830 | else |
| 2831 | { |
| 2832 | status = regcache->raw_read (fp0 + reg_index, buffer + 8); |
| 2833 | if (status == REG_VALID) |
| 2834 | status = regcache->raw_read (vsr0_upper + reg_index, buffer); |
| 2835 | } |
| 2836 | |
| 2837 | return status; |
| 2838 | } |
| 2839 | |
| 2840 | /* Write method for POWER7 VSX pseudo-registers. */ |
| 2841 | static void |
| 2842 | vsx_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2843 | int reg_nr, const gdb_byte *buffer) |
| 2844 | { |
| 2845 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2846 | int reg_index, vr0, fp0, vsr0_upper; |
| 2847 | |
| 2848 | if (IS_VSX_PSEUDOREG (tdep, reg_nr)) |
| 2849 | { |
| 2850 | reg_index = reg_nr - tdep->ppc_vsr0_regnum; |
| 2851 | vr0 = PPC_VR0_REGNUM; |
| 2852 | fp0 = PPC_F0_REGNUM; |
| 2853 | vsr0_upper = PPC_VSR0_UPPER_REGNUM; |
| 2854 | } |
| 2855 | else |
| 2856 | { |
| 2857 | gdb_assert (IS_CVSX_PSEUDOREG (tdep, reg_nr)); |
| 2858 | |
| 2859 | reg_index = reg_nr - tdep->ppc_cvsr0_regnum; |
| 2860 | vr0 = PPC_CVR0_REGNUM; |
| 2861 | fp0 = PPC_CF0_REGNUM; |
| 2862 | vsr0_upper = PPC_CVSR0_UPPER_REGNUM; |
| 2863 | } |
| 2864 | |
| 2865 | /* Write the portion that overlaps the VMX registers. */ |
| 2866 | if (reg_index > 31) |
| 2867 | regcache->raw_write (vr0 + reg_index - 32, buffer); |
| 2868 | else |
| 2869 | /* Write the portion that overlaps the FPR registers. */ |
| 2870 | if (gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG) |
| 2871 | { |
| 2872 | regcache->raw_write (fp0 + reg_index, buffer); |
| 2873 | regcache->raw_write (vsr0_upper + reg_index, buffer + 8); |
| 2874 | } |
| 2875 | else |
| 2876 | { |
| 2877 | regcache->raw_write (fp0 + reg_index, buffer + 8); |
| 2878 | regcache->raw_write (vsr0_upper + reg_index, buffer); |
| 2879 | } |
| 2880 | } |
| 2881 | |
| 2882 | /* Read method for POWER7 Extended FP pseudo-registers. */ |
| 2883 | static enum register_status |
| 2884 | efp_pseudo_register_read (struct gdbarch *gdbarch, readable_regcache *regcache, |
| 2885 | int reg_nr, gdb_byte *buffer) |
| 2886 | { |
| 2887 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2888 | int reg_index, vr0; |
| 2889 | |
| 2890 | if (IS_EFP_PSEUDOREG (tdep, reg_nr)) |
| 2891 | { |
| 2892 | reg_index = reg_nr - tdep->ppc_efpr0_regnum; |
| 2893 | vr0 = PPC_VR0_REGNUM; |
| 2894 | } |
| 2895 | else |
| 2896 | { |
| 2897 | gdb_assert (IS_CEFP_PSEUDOREG (tdep, reg_nr)); |
| 2898 | |
| 2899 | reg_index = reg_nr - tdep->ppc_cefpr0_regnum; |
| 2900 | vr0 = PPC_CVR0_REGNUM; |
| 2901 | } |
| 2902 | |
| 2903 | int offset = gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG ? 0 : 8; |
| 2904 | |
| 2905 | /* Read the portion that overlaps the VMX register. */ |
| 2906 | return regcache->raw_read_part (vr0 + reg_index, offset, |
| 2907 | register_size (gdbarch, reg_nr), |
| 2908 | buffer); |
| 2909 | } |
| 2910 | |
| 2911 | /* Write method for POWER7 Extended FP pseudo-registers. */ |
| 2912 | static void |
| 2913 | efp_pseudo_register_write (struct gdbarch *gdbarch, struct regcache *regcache, |
| 2914 | int reg_nr, const gdb_byte *buffer) |
| 2915 | { |
| 2916 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2917 | int reg_index, vr0; |
| 2918 | int offset = gdbarch_byte_order (gdbarch) == BFD_ENDIAN_BIG ? 0 : 8; |
| 2919 | |
| 2920 | if (IS_EFP_PSEUDOREG (tdep, reg_nr)) |
| 2921 | { |
| 2922 | reg_index = reg_nr - tdep->ppc_efpr0_regnum; |
| 2923 | vr0 = PPC_VR0_REGNUM; |
| 2924 | } |
| 2925 | else |
| 2926 | { |
| 2927 | gdb_assert (IS_CEFP_PSEUDOREG (tdep, reg_nr)); |
| 2928 | |
| 2929 | reg_index = reg_nr - tdep->ppc_cefpr0_regnum; |
| 2930 | vr0 = PPC_CVR0_REGNUM; |
| 2931 | |
| 2932 | /* The call to raw_write_part fails silently if the initial read |
| 2933 | of the read-update-write sequence returns an invalid status, |
| 2934 | so we check this manually and throw an error if needed. */ |
| 2935 | regcache->raw_update (vr0 + reg_index); |
| 2936 | if (regcache->get_register_status (vr0 + reg_index) != REG_VALID) |
| 2937 | error (_("Cannot write to the checkpointed EFP register, " |
| 2938 | "the corresponding vector register is unavailable.")); |
| 2939 | } |
| 2940 | |
| 2941 | /* Write the portion that overlaps the VMX register. */ |
| 2942 | regcache->raw_write_part (vr0 + reg_index, offset, |
| 2943 | register_size (gdbarch, reg_nr), buffer); |
| 2944 | } |
| 2945 | |
| 2946 | static enum register_status |
| 2947 | rs6000_pseudo_register_read (struct gdbarch *gdbarch, |
| 2948 | readable_regcache *regcache, |
| 2949 | int reg_nr, gdb_byte *buffer) |
| 2950 | { |
| 2951 | struct gdbarch *regcache_arch = regcache->arch (); |
| 2952 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2953 | |
| 2954 | gdb_assert (regcache_arch == gdbarch); |
| 2955 | |
| 2956 | if (IS_SPE_PSEUDOREG (tdep, reg_nr)) |
| 2957 | return e500_pseudo_register_read (gdbarch, regcache, reg_nr, buffer); |
| 2958 | else if (IS_DFP_PSEUDOREG (tdep, reg_nr) |
| 2959 | || IS_CDFP_PSEUDOREG (tdep, reg_nr)) |
| 2960 | return dfp_pseudo_register_read (gdbarch, regcache, reg_nr, buffer); |
| 2961 | else if (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)) |
| 2962 | return v_alias_pseudo_register_read (gdbarch, regcache, reg_nr, |
| 2963 | buffer); |
| 2964 | else if (IS_VSX_PSEUDOREG (tdep, reg_nr) |
| 2965 | || IS_CVSX_PSEUDOREG (tdep, reg_nr)) |
| 2966 | return vsx_pseudo_register_read (gdbarch, regcache, reg_nr, buffer); |
| 2967 | else if (IS_EFP_PSEUDOREG (tdep, reg_nr) |
| 2968 | || IS_CEFP_PSEUDOREG (tdep, reg_nr)) |
| 2969 | return efp_pseudo_register_read (gdbarch, regcache, reg_nr, buffer); |
| 2970 | else |
| 2971 | internal_error (__FILE__, __LINE__, |
| 2972 | _("rs6000_pseudo_register_read: " |
| 2973 | "called on unexpected register '%s' (%d)"), |
| 2974 | gdbarch_register_name (gdbarch, reg_nr), reg_nr); |
| 2975 | } |
| 2976 | |
| 2977 | static void |
| 2978 | rs6000_pseudo_register_write (struct gdbarch *gdbarch, |
| 2979 | struct regcache *regcache, |
| 2980 | int reg_nr, const gdb_byte *buffer) |
| 2981 | { |
| 2982 | struct gdbarch *regcache_arch = regcache->arch (); |
| 2983 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 2984 | |
| 2985 | gdb_assert (regcache_arch == gdbarch); |
| 2986 | |
| 2987 | if (IS_SPE_PSEUDOREG (tdep, reg_nr)) |
| 2988 | e500_pseudo_register_write (gdbarch, regcache, reg_nr, buffer); |
| 2989 | else if (IS_DFP_PSEUDOREG (tdep, reg_nr) |
| 2990 | || IS_CDFP_PSEUDOREG (tdep, reg_nr)) |
| 2991 | dfp_pseudo_register_write (gdbarch, regcache, reg_nr, buffer); |
| 2992 | else if (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)) |
| 2993 | v_alias_pseudo_register_write (gdbarch, regcache, reg_nr, buffer); |
| 2994 | else if (IS_VSX_PSEUDOREG (tdep, reg_nr) |
| 2995 | || IS_CVSX_PSEUDOREG (tdep, reg_nr)) |
| 2996 | vsx_pseudo_register_write (gdbarch, regcache, reg_nr, buffer); |
| 2997 | else if (IS_EFP_PSEUDOREG (tdep, reg_nr) |
| 2998 | || IS_CEFP_PSEUDOREG (tdep, reg_nr)) |
| 2999 | efp_pseudo_register_write (gdbarch, regcache, reg_nr, buffer); |
| 3000 | else |
| 3001 | internal_error (__FILE__, __LINE__, |
| 3002 | _("rs6000_pseudo_register_write: " |
| 3003 | "called on unexpected register '%s' (%d)"), |
| 3004 | gdbarch_register_name (gdbarch, reg_nr), reg_nr); |
| 3005 | } |
| 3006 | |
| 3007 | /* Set the register mask in AX with the registers that form the DFP or |
| 3008 | checkpointed DFP pseudo-register REG_NR. */ |
| 3009 | |
| 3010 | static void |
| 3011 | dfp_ax_pseudo_register_collect (struct gdbarch *gdbarch, |
| 3012 | struct agent_expr *ax, int reg_nr) |
| 3013 | { |
| 3014 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3015 | int reg_index, fp0; |
| 3016 | |
| 3017 | if (IS_DFP_PSEUDOREG (tdep, reg_nr)) |
| 3018 | { |
| 3019 | reg_index = reg_nr - tdep->ppc_dl0_regnum; |
| 3020 | fp0 = PPC_F0_REGNUM; |
| 3021 | } |
| 3022 | else |
| 3023 | { |
| 3024 | gdb_assert (IS_CDFP_PSEUDOREG (tdep, reg_nr)); |
| 3025 | |
| 3026 | reg_index = reg_nr - tdep->ppc_cdl0_regnum; |
| 3027 | fp0 = PPC_CF0_REGNUM; |
| 3028 | } |
| 3029 | |
| 3030 | ax_reg_mask (ax, fp0 + 2 * reg_index); |
| 3031 | ax_reg_mask (ax, fp0 + 2 * reg_index + 1); |
| 3032 | } |
| 3033 | |
| 3034 | /* Set the register mask in AX with the raw vector register that |
| 3035 | corresponds to its REG_NR alias. */ |
| 3036 | |
| 3037 | static void |
| 3038 | v_alias_pseudo_register_collect (struct gdbarch *gdbarch, |
| 3039 | struct agent_expr *ax, int reg_nr) |
| 3040 | { |
| 3041 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3042 | gdb_assert (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)); |
| 3043 | |
| 3044 | ax_reg_mask (ax, tdep->ppc_vr0_regnum |
| 3045 | + (reg_nr - tdep->ppc_v0_alias_regnum)); |
| 3046 | } |
| 3047 | |
| 3048 | /* Set the register mask in AX with the registers that form the VSX or |
| 3049 | checkpointed VSX pseudo-register REG_NR. */ |
| 3050 | |
| 3051 | static void |
| 3052 | vsx_ax_pseudo_register_collect (struct gdbarch *gdbarch, |
| 3053 | struct agent_expr *ax, int reg_nr) |
| 3054 | { |
| 3055 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3056 | int reg_index, vr0, fp0, vsr0_upper; |
| 3057 | |
| 3058 | if (IS_VSX_PSEUDOREG (tdep, reg_nr)) |
| 3059 | { |
| 3060 | reg_index = reg_nr - tdep->ppc_vsr0_regnum; |
| 3061 | vr0 = PPC_VR0_REGNUM; |
| 3062 | fp0 = PPC_F0_REGNUM; |
| 3063 | vsr0_upper = PPC_VSR0_UPPER_REGNUM; |
| 3064 | } |
| 3065 | else |
| 3066 | { |
| 3067 | gdb_assert (IS_CVSX_PSEUDOREG (tdep, reg_nr)); |
| 3068 | |
| 3069 | reg_index = reg_nr - tdep->ppc_cvsr0_regnum; |
| 3070 | vr0 = PPC_CVR0_REGNUM; |
| 3071 | fp0 = PPC_CF0_REGNUM; |
| 3072 | vsr0_upper = PPC_CVSR0_UPPER_REGNUM; |
| 3073 | } |
| 3074 | |
| 3075 | if (reg_index > 31) |
| 3076 | { |
| 3077 | ax_reg_mask (ax, vr0 + reg_index - 32); |
| 3078 | } |
| 3079 | else |
| 3080 | { |
| 3081 | ax_reg_mask (ax, fp0 + reg_index); |
| 3082 | ax_reg_mask (ax, vsr0_upper + reg_index); |
| 3083 | } |
| 3084 | } |
| 3085 | |
| 3086 | /* Set the register mask in AX with the register that corresponds to |
| 3087 | the EFP or checkpointed EFP pseudo-register REG_NR. */ |
| 3088 | |
| 3089 | static void |
| 3090 | efp_ax_pseudo_register_collect (struct gdbarch *gdbarch, |
| 3091 | struct agent_expr *ax, int reg_nr) |
| 3092 | { |
| 3093 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3094 | int reg_index, vr0; |
| 3095 | |
| 3096 | if (IS_EFP_PSEUDOREG (tdep, reg_nr)) |
| 3097 | { |
| 3098 | reg_index = reg_nr - tdep->ppc_efpr0_regnum; |
| 3099 | vr0 = PPC_VR0_REGNUM; |
| 3100 | } |
| 3101 | else |
| 3102 | { |
| 3103 | gdb_assert (IS_CEFP_PSEUDOREG (tdep, reg_nr)); |
| 3104 | |
| 3105 | reg_index = reg_nr - tdep->ppc_cefpr0_regnum; |
| 3106 | vr0 = PPC_CVR0_REGNUM; |
| 3107 | } |
| 3108 | |
| 3109 | ax_reg_mask (ax, vr0 + reg_index); |
| 3110 | } |
| 3111 | |
| 3112 | static int |
| 3113 | rs6000_ax_pseudo_register_collect (struct gdbarch *gdbarch, |
| 3114 | struct agent_expr *ax, int reg_nr) |
| 3115 | { |
| 3116 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3117 | if (IS_SPE_PSEUDOREG (tdep, reg_nr)) |
| 3118 | { |
| 3119 | int reg_index = reg_nr - tdep->ppc_ev0_regnum; |
| 3120 | ax_reg_mask (ax, tdep->ppc_gp0_regnum + reg_index); |
| 3121 | ax_reg_mask (ax, tdep->ppc_ev0_upper_regnum + reg_index); |
| 3122 | } |
| 3123 | else if (IS_DFP_PSEUDOREG (tdep, reg_nr) |
| 3124 | || IS_CDFP_PSEUDOREG (tdep, reg_nr)) |
| 3125 | { |
| 3126 | dfp_ax_pseudo_register_collect (gdbarch, ax, reg_nr); |
| 3127 | } |
| 3128 | else if (IS_V_ALIAS_PSEUDOREG (tdep, reg_nr)) |
| 3129 | { |
| 3130 | v_alias_pseudo_register_collect (gdbarch, ax, reg_nr); |
| 3131 | } |
| 3132 | else if (IS_VSX_PSEUDOREG (tdep, reg_nr) |
| 3133 | || IS_CVSX_PSEUDOREG (tdep, reg_nr)) |
| 3134 | { |
| 3135 | vsx_ax_pseudo_register_collect (gdbarch, ax, reg_nr); |
| 3136 | } |
| 3137 | else if (IS_EFP_PSEUDOREG (tdep, reg_nr) |
| 3138 | || IS_CEFP_PSEUDOREG (tdep, reg_nr)) |
| 3139 | { |
| 3140 | efp_ax_pseudo_register_collect (gdbarch, ax, reg_nr); |
| 3141 | } |
| 3142 | else |
| 3143 | internal_error (__FILE__, __LINE__, |
| 3144 | _("rs6000_pseudo_register_collect: " |
| 3145 | "called on unexpected register '%s' (%d)"), |
| 3146 | gdbarch_register_name (gdbarch, reg_nr), reg_nr); |
| 3147 | return 0; |
| 3148 | } |
| 3149 | |
| 3150 | |
| 3151 | static void |
| 3152 | rs6000_gen_return_address (struct gdbarch *gdbarch, |
| 3153 | struct agent_expr *ax, struct axs_value *value, |
| 3154 | CORE_ADDR scope) |
| 3155 | { |
| 3156 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3157 | value->type = register_type (gdbarch, tdep->ppc_lr_regnum); |
| 3158 | value->kind = axs_lvalue_register; |
| 3159 | value->u.reg = tdep->ppc_lr_regnum; |
| 3160 | } |
| 3161 | |
| 3162 | |
| 3163 | /* Convert a DBX STABS register number to a GDB register number. */ |
| 3164 | static int |
| 3165 | rs6000_stab_reg_to_regnum (struct gdbarch *gdbarch, int num) |
| 3166 | { |
| 3167 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3168 | |
| 3169 | if (0 <= num && num <= 31) |
| 3170 | return tdep->ppc_gp0_regnum + num; |
| 3171 | else if (32 <= num && num <= 63) |
| 3172 | /* FIXME: jimb/2004-05-05: What should we do when the debug info |
| 3173 | specifies registers the architecture doesn't have? Our |
| 3174 | callers don't check the value we return. */ |
| 3175 | return tdep->ppc_fp0_regnum + (num - 32); |
| 3176 | else if (77 <= num && num <= 108) |
| 3177 | return tdep->ppc_vr0_regnum + (num - 77); |
| 3178 | else if (1200 <= num && num < 1200 + 32) |
| 3179 | return tdep->ppc_ev0_upper_regnum + (num - 1200); |
| 3180 | else |
| 3181 | switch (num) |
| 3182 | { |
| 3183 | case 64: |
| 3184 | return tdep->ppc_mq_regnum; |
| 3185 | case 65: |
| 3186 | return tdep->ppc_lr_regnum; |
| 3187 | case 66: |
| 3188 | return tdep->ppc_ctr_regnum; |
| 3189 | case 76: |
| 3190 | return tdep->ppc_xer_regnum; |
| 3191 | case 109: |
| 3192 | return tdep->ppc_vrsave_regnum; |
| 3193 | case 110: |
| 3194 | return tdep->ppc_vrsave_regnum - 1; /* vscr */ |
| 3195 | case 111: |
| 3196 | return tdep->ppc_acc_regnum; |
| 3197 | case 112: |
| 3198 | return tdep->ppc_spefscr_regnum; |
| 3199 | default: |
| 3200 | return num; |
| 3201 | } |
| 3202 | } |
| 3203 | |
| 3204 | |
| 3205 | /* Convert a Dwarf 2 register number to a GDB register number. */ |
| 3206 | static int |
| 3207 | rs6000_dwarf2_reg_to_regnum (struct gdbarch *gdbarch, int num) |
| 3208 | { |
| 3209 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3210 | |
| 3211 | if (0 <= num && num <= 31) |
| 3212 | return tdep->ppc_gp0_regnum + num; |
| 3213 | else if (32 <= num && num <= 63) |
| 3214 | /* FIXME: jimb/2004-05-05: What should we do when the debug info |
| 3215 | specifies registers the architecture doesn't have? Our |
| 3216 | callers don't check the value we return. */ |
| 3217 | return tdep->ppc_fp0_regnum + (num - 32); |
| 3218 | else if (1124 <= num && num < 1124 + 32) |
| 3219 | return tdep->ppc_vr0_regnum + (num - 1124); |
| 3220 | else if (1200 <= num && num < 1200 + 32) |
| 3221 | return tdep->ppc_ev0_upper_regnum + (num - 1200); |
| 3222 | else |
| 3223 | switch (num) |
| 3224 | { |
| 3225 | case 64: |
| 3226 | return tdep->ppc_cr_regnum; |
| 3227 | case 67: |
| 3228 | return tdep->ppc_vrsave_regnum - 1; /* vscr */ |
| 3229 | case 99: |
| 3230 | return tdep->ppc_acc_regnum; |
| 3231 | case 100: |
| 3232 | return tdep->ppc_mq_regnum; |
| 3233 | case 101: |
| 3234 | return tdep->ppc_xer_regnum; |
| 3235 | case 108: |
| 3236 | return tdep->ppc_lr_regnum; |
| 3237 | case 109: |
| 3238 | return tdep->ppc_ctr_regnum; |
| 3239 | case 356: |
| 3240 | return tdep->ppc_vrsave_regnum; |
| 3241 | case 612: |
| 3242 | return tdep->ppc_spefscr_regnum; |
| 3243 | default: |
| 3244 | return num; |
| 3245 | } |
| 3246 | } |
| 3247 | |
| 3248 | /* Translate a .eh_frame register to DWARF register, or adjust a |
| 3249 | .debug_frame register. */ |
| 3250 | |
| 3251 | static int |
| 3252 | rs6000_adjust_frame_regnum (struct gdbarch *gdbarch, int num, int eh_frame_p) |
| 3253 | { |
| 3254 | /* GCC releases before 3.4 use GCC internal register numbering in |
| 3255 | .debug_frame (and .debug_info, et cetera). The numbering is |
| 3256 | different from the standard SysV numbering for everything except |
| 3257 | for GPRs and FPRs. We can not detect this problem in most cases |
| 3258 | - to get accurate debug info for variables living in lr, ctr, v0, |
| 3259 | et cetera, use a newer version of GCC. But we must detect |
| 3260 | one important case - lr is in column 65 in .debug_frame output, |
| 3261 | instead of 108. |
| 3262 | |
| 3263 | GCC 3.4, and the "hammer" branch, have a related problem. They |
| 3264 | record lr register saves in .debug_frame as 108, but still record |
| 3265 | the return column as 65. We fix that up too. |
| 3266 | |
| 3267 | We can do this because 65 is assigned to fpsr, and GCC never |
| 3268 | generates debug info referring to it. To add support for |
| 3269 | handwritten debug info that restores fpsr, we would need to add a |
| 3270 | producer version check to this. */ |
| 3271 | if (!eh_frame_p) |
| 3272 | { |
| 3273 | if (num == 65) |
| 3274 | return 108; |
| 3275 | else |
| 3276 | return num; |
| 3277 | } |
| 3278 | |
| 3279 | /* .eh_frame is GCC specific. For binary compatibility, it uses GCC |
| 3280 | internal register numbering; translate that to the standard DWARF2 |
| 3281 | register numbering. */ |
| 3282 | if (0 <= num && num <= 63) /* r0-r31,fp0-fp31 */ |
| 3283 | return num; |
| 3284 | else if (68 <= num && num <= 75) /* cr0-cr8 */ |
| 3285 | return num - 68 + 86; |
| 3286 | else if (77 <= num && num <= 108) /* vr0-vr31 */ |
| 3287 | return num - 77 + 1124; |
| 3288 | else |
| 3289 | switch (num) |
| 3290 | { |
| 3291 | case 64: /* mq */ |
| 3292 | return 100; |
| 3293 | case 65: /* lr */ |
| 3294 | return 108; |
| 3295 | case 66: /* ctr */ |
| 3296 | return 109; |
| 3297 | case 76: /* xer */ |
| 3298 | return 101; |
| 3299 | case 109: /* vrsave */ |
| 3300 | return 356; |
| 3301 | case 110: /* vscr */ |
| 3302 | return 67; |
| 3303 | case 111: /* spe_acc */ |
| 3304 | return 99; |
| 3305 | case 112: /* spefscr */ |
| 3306 | return 612; |
| 3307 | default: |
| 3308 | return num; |
| 3309 | } |
| 3310 | } |
| 3311 | \f |
| 3312 | |
| 3313 | /* Handling the various POWER/PowerPC variants. */ |
| 3314 | |
| 3315 | /* Information about a particular processor variant. */ |
| 3316 | |
| 3317 | struct variant |
| 3318 | { |
| 3319 | /* Name of this variant. */ |
| 3320 | const char *name; |
| 3321 | |
| 3322 | /* English description of the variant. */ |
| 3323 | const char *description; |
| 3324 | |
| 3325 | /* bfd_arch_info.arch corresponding to variant. */ |
| 3326 | enum bfd_architecture arch; |
| 3327 | |
| 3328 | /* bfd_arch_info.mach corresponding to variant. */ |
| 3329 | unsigned long mach; |
| 3330 | |
| 3331 | /* Target description for this variant. */ |
| 3332 | struct target_desc **tdesc; |
| 3333 | }; |
| 3334 | |
| 3335 | static struct variant variants[] = |
| 3336 | { |
| 3337 | {"powerpc", "PowerPC user-level", bfd_arch_powerpc, |
| 3338 | bfd_mach_ppc, &tdesc_powerpc_altivec32}, |
| 3339 | {"power", "POWER user-level", bfd_arch_rs6000, |
| 3340 | bfd_mach_rs6k, &tdesc_rs6000}, |
| 3341 | {"403", "IBM PowerPC 403", bfd_arch_powerpc, |
| 3342 | bfd_mach_ppc_403, &tdesc_powerpc_403}, |
| 3343 | {"405", "IBM PowerPC 405", bfd_arch_powerpc, |
| 3344 | bfd_mach_ppc_405, &tdesc_powerpc_405}, |
| 3345 | {"601", "Motorola PowerPC 601", bfd_arch_powerpc, |
| 3346 | bfd_mach_ppc_601, &tdesc_powerpc_601}, |
| 3347 | {"602", "Motorola PowerPC 602", bfd_arch_powerpc, |
| 3348 | bfd_mach_ppc_602, &tdesc_powerpc_602}, |
| 3349 | {"603", "Motorola/IBM PowerPC 603 or 603e", bfd_arch_powerpc, |
| 3350 | bfd_mach_ppc_603, &tdesc_powerpc_603}, |
| 3351 | {"604", "Motorola PowerPC 604 or 604e", bfd_arch_powerpc, |
| 3352 | 604, &tdesc_powerpc_604}, |
| 3353 | {"403GC", "IBM PowerPC 403GC", bfd_arch_powerpc, |
| 3354 | bfd_mach_ppc_403gc, &tdesc_powerpc_403gc}, |
| 3355 | {"505", "Motorola PowerPC 505", bfd_arch_powerpc, |
| 3356 | bfd_mach_ppc_505, &tdesc_powerpc_505}, |
| 3357 | {"860", "Motorola PowerPC 860 or 850", bfd_arch_powerpc, |
| 3358 | bfd_mach_ppc_860, &tdesc_powerpc_860}, |
| 3359 | {"750", "Motorola/IBM PowerPC 750 or 740", bfd_arch_powerpc, |
| 3360 | bfd_mach_ppc_750, &tdesc_powerpc_750}, |
| 3361 | {"7400", "Motorola/IBM PowerPC 7400 (G4)", bfd_arch_powerpc, |
| 3362 | bfd_mach_ppc_7400, &tdesc_powerpc_7400}, |
| 3363 | {"e500", "Motorola PowerPC e500", bfd_arch_powerpc, |
| 3364 | bfd_mach_ppc_e500, &tdesc_powerpc_e500}, |
| 3365 | |
| 3366 | /* 64-bit */ |
| 3367 | {"powerpc64", "PowerPC 64-bit user-level", bfd_arch_powerpc, |
| 3368 | bfd_mach_ppc64, &tdesc_powerpc_altivec64}, |
| 3369 | {"620", "Motorola PowerPC 620", bfd_arch_powerpc, |
| 3370 | bfd_mach_ppc_620, &tdesc_powerpc_64}, |
| 3371 | {"630", "Motorola PowerPC 630", bfd_arch_powerpc, |
| 3372 | bfd_mach_ppc_630, &tdesc_powerpc_64}, |
| 3373 | {"a35", "PowerPC A35", bfd_arch_powerpc, |
| 3374 | bfd_mach_ppc_a35, &tdesc_powerpc_64}, |
| 3375 | {"rs64ii", "PowerPC rs64ii", bfd_arch_powerpc, |
| 3376 | bfd_mach_ppc_rs64ii, &tdesc_powerpc_64}, |
| 3377 | {"rs64iii", "PowerPC rs64iii", bfd_arch_powerpc, |
| 3378 | bfd_mach_ppc_rs64iii, &tdesc_powerpc_64}, |
| 3379 | |
| 3380 | /* FIXME: I haven't checked the register sets of the following. */ |
| 3381 | {"rs1", "IBM POWER RS1", bfd_arch_rs6000, |
| 3382 | bfd_mach_rs6k_rs1, &tdesc_rs6000}, |
| 3383 | {"rsc", "IBM POWER RSC", bfd_arch_rs6000, |
| 3384 | bfd_mach_rs6k_rsc, &tdesc_rs6000}, |
| 3385 | {"rs2", "IBM POWER RS2", bfd_arch_rs6000, |
| 3386 | bfd_mach_rs6k_rs2, &tdesc_rs6000}, |
| 3387 | |
| 3388 | {0, 0, (enum bfd_architecture) 0, 0, 0} |
| 3389 | }; |
| 3390 | |
| 3391 | /* Return the variant corresponding to architecture ARCH and machine number |
| 3392 | MACH. If no such variant exists, return null. */ |
| 3393 | |
| 3394 | static const struct variant * |
| 3395 | find_variant_by_arch (enum bfd_architecture arch, unsigned long mach) |
| 3396 | { |
| 3397 | const struct variant *v; |
| 3398 | |
| 3399 | for (v = variants; v->name; v++) |
| 3400 | if (arch == v->arch && mach == v->mach) |
| 3401 | return v; |
| 3402 | |
| 3403 | return NULL; |
| 3404 | } |
| 3405 | |
| 3406 | \f |
| 3407 | |
| 3408 | struct rs6000_frame_cache |
| 3409 | { |
| 3410 | CORE_ADDR base; |
| 3411 | CORE_ADDR initial_sp; |
| 3412 | struct trad_frame_saved_reg *saved_regs; |
| 3413 | |
| 3414 | /* Set BASE_P to true if this frame cache is properly initialized. |
| 3415 | Otherwise set to false because some registers or memory cannot |
| 3416 | collected. */ |
| 3417 | int base_p; |
| 3418 | /* Cache PC for building unavailable frame. */ |
| 3419 | CORE_ADDR pc; |
| 3420 | }; |
| 3421 | |
| 3422 | static struct rs6000_frame_cache * |
| 3423 | rs6000_frame_cache (struct frame_info *this_frame, void **this_cache) |
| 3424 | { |
| 3425 | struct rs6000_frame_cache *cache; |
| 3426 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 3427 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3428 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 3429 | struct rs6000_framedata fdata; |
| 3430 | int wordsize = tdep->wordsize; |
| 3431 | CORE_ADDR func = 0, pc = 0; |
| 3432 | |
| 3433 | if ((*this_cache) != NULL) |
| 3434 | return (struct rs6000_frame_cache *) (*this_cache); |
| 3435 | cache = FRAME_OBSTACK_ZALLOC (struct rs6000_frame_cache); |
| 3436 | (*this_cache) = cache; |
| 3437 | cache->pc = 0; |
| 3438 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
| 3439 | |
| 3440 | try |
| 3441 | { |
| 3442 | func = get_frame_func (this_frame); |
| 3443 | cache->pc = func; |
| 3444 | pc = get_frame_pc (this_frame); |
| 3445 | skip_prologue (gdbarch, func, pc, &fdata); |
| 3446 | |
| 3447 | /* Figure out the parent's stack pointer. */ |
| 3448 | |
| 3449 | /* NOTE: cagney/2002-04-14: The ->frame points to the inner-most |
| 3450 | address of the current frame. Things might be easier if the |
| 3451 | ->frame pointed to the outer-most address of the frame. In |
| 3452 | the mean time, the address of the prev frame is used as the |
| 3453 | base address of this frame. */ |
| 3454 | cache->base = get_frame_register_unsigned |
| 3455 | (this_frame, gdbarch_sp_regnum (gdbarch)); |
| 3456 | } |
| 3457 | catch (const gdb_exception_error &ex) |
| 3458 | { |
| 3459 | if (ex.error != NOT_AVAILABLE_ERROR) |
| 3460 | throw; |
| 3461 | return (struct rs6000_frame_cache *) (*this_cache); |
| 3462 | } |
| 3463 | |
| 3464 | /* If the function appears to be frameless, check a couple of likely |
| 3465 | indicators that we have simply failed to find the frame setup. |
| 3466 | Two common cases of this are missing symbols (i.e. |
| 3467 | get_frame_func returns the wrong address or 0), and assembly |
| 3468 | stubs which have a fast exit path but set up a frame on the slow |
| 3469 | path. |
| 3470 | |
| 3471 | If the LR appears to return to this function, then presume that |
| 3472 | we have an ABI compliant frame that we failed to find. */ |
| 3473 | if (fdata.frameless && fdata.lr_offset == 0) |
| 3474 | { |
| 3475 | CORE_ADDR saved_lr; |
| 3476 | int make_frame = 0; |
| 3477 | |
| 3478 | saved_lr = get_frame_register_unsigned (this_frame, tdep->ppc_lr_regnum); |
| 3479 | if (func == 0 && saved_lr == pc) |
| 3480 | make_frame = 1; |
| 3481 | else if (func != 0) |
| 3482 | { |
| 3483 | CORE_ADDR saved_func = get_pc_function_start (saved_lr); |
| 3484 | if (func == saved_func) |
| 3485 | make_frame = 1; |
| 3486 | } |
| 3487 | |
| 3488 | if (make_frame) |
| 3489 | { |
| 3490 | fdata.frameless = 0; |
| 3491 | fdata.lr_offset = tdep->lr_frame_offset; |
| 3492 | } |
| 3493 | } |
| 3494 | |
| 3495 | if (!fdata.frameless) |
| 3496 | { |
| 3497 | /* Frameless really means stackless. */ |
| 3498 | ULONGEST backchain; |
| 3499 | |
| 3500 | if (safe_read_memory_unsigned_integer (cache->base, wordsize, |
| 3501 | byte_order, &backchain)) |
| 3502 | cache->base = (CORE_ADDR) backchain; |
| 3503 | } |
| 3504 | |
| 3505 | trad_frame_set_value (cache->saved_regs, |
| 3506 | gdbarch_sp_regnum (gdbarch), cache->base); |
| 3507 | |
| 3508 | /* if != -1, fdata.saved_fpr is the smallest number of saved_fpr. |
| 3509 | All fpr's from saved_fpr to fp31 are saved. */ |
| 3510 | |
| 3511 | if (fdata.saved_fpr >= 0) |
| 3512 | { |
| 3513 | int i; |
| 3514 | CORE_ADDR fpr_addr = cache->base + fdata.fpr_offset; |
| 3515 | |
| 3516 | /* If skip_prologue says floating-point registers were saved, |
| 3517 | but the current architecture has no floating-point registers, |
| 3518 | then that's strange. But we have no indices to even record |
| 3519 | the addresses under, so we just ignore it. */ |
| 3520 | if (ppc_floating_point_unit_p (gdbarch)) |
| 3521 | for (i = fdata.saved_fpr; i < ppc_num_fprs; i++) |
| 3522 | { |
| 3523 | cache->saved_regs[tdep->ppc_fp0_regnum + i].addr = fpr_addr; |
| 3524 | fpr_addr += 8; |
| 3525 | } |
| 3526 | } |
| 3527 | |
| 3528 | /* if != -1, fdata.saved_gpr is the smallest number of saved_gpr. |
| 3529 | All gpr's from saved_gpr to gpr31 are saved (except during the |
| 3530 | prologue). */ |
| 3531 | |
| 3532 | if (fdata.saved_gpr >= 0) |
| 3533 | { |
| 3534 | int i; |
| 3535 | CORE_ADDR gpr_addr = cache->base + fdata.gpr_offset; |
| 3536 | for (i = fdata.saved_gpr; i < ppc_num_gprs; i++) |
| 3537 | { |
| 3538 | if (fdata.gpr_mask & (1U << i)) |
| 3539 | cache->saved_regs[tdep->ppc_gp0_regnum + i].addr = gpr_addr; |
| 3540 | gpr_addr += wordsize; |
| 3541 | } |
| 3542 | } |
| 3543 | |
| 3544 | /* if != -1, fdata.saved_vr is the smallest number of saved_vr. |
| 3545 | All vr's from saved_vr to vr31 are saved. */ |
| 3546 | if (tdep->ppc_vr0_regnum != -1 && tdep->ppc_vrsave_regnum != -1) |
| 3547 | { |
| 3548 | if (fdata.saved_vr >= 0) |
| 3549 | { |
| 3550 | int i; |
| 3551 | CORE_ADDR vr_addr = cache->base + fdata.vr_offset; |
| 3552 | for (i = fdata.saved_vr; i < 32; i++) |
| 3553 | { |
| 3554 | cache->saved_regs[tdep->ppc_vr0_regnum + i].addr = vr_addr; |
| 3555 | vr_addr += register_size (gdbarch, tdep->ppc_vr0_regnum); |
| 3556 | } |
| 3557 | } |
| 3558 | } |
| 3559 | |
| 3560 | /* if != -1, fdata.saved_ev is the smallest number of saved_ev. |
| 3561 | All vr's from saved_ev to ev31 are saved. ????? */ |
| 3562 | if (tdep->ppc_ev0_regnum != -1) |
| 3563 | { |
| 3564 | if (fdata.saved_ev >= 0) |
| 3565 | { |
| 3566 | int i; |
| 3567 | CORE_ADDR ev_addr = cache->base + fdata.ev_offset; |
| 3568 | CORE_ADDR off = (byte_order == BFD_ENDIAN_BIG ? 4 : 0); |
| 3569 | |
| 3570 | for (i = fdata.saved_ev; i < ppc_num_gprs; i++) |
| 3571 | { |
| 3572 | cache->saved_regs[tdep->ppc_ev0_regnum + i].addr = ev_addr; |
| 3573 | cache->saved_regs[tdep->ppc_gp0_regnum + i].addr = ev_addr + off; |
| 3574 | ev_addr += register_size (gdbarch, tdep->ppc_ev0_regnum); |
| 3575 | } |
| 3576 | } |
| 3577 | } |
| 3578 | |
| 3579 | /* If != 0, fdata.cr_offset is the offset from the frame that |
| 3580 | holds the CR. */ |
| 3581 | if (fdata.cr_offset != 0) |
| 3582 | cache->saved_regs[tdep->ppc_cr_regnum].addr |
| 3583 | = cache->base + fdata.cr_offset; |
| 3584 | |
| 3585 | /* If != 0, fdata.lr_offset is the offset from the frame that |
| 3586 | holds the LR. */ |
| 3587 | if (fdata.lr_offset != 0) |
| 3588 | cache->saved_regs[tdep->ppc_lr_regnum].addr |
| 3589 | = cache->base + fdata.lr_offset; |
| 3590 | else if (fdata.lr_register != -1) |
| 3591 | cache->saved_regs[tdep->ppc_lr_regnum].realreg = fdata.lr_register; |
| 3592 | /* The PC is found in the link register. */ |
| 3593 | cache->saved_regs[gdbarch_pc_regnum (gdbarch)] = |
| 3594 | cache->saved_regs[tdep->ppc_lr_regnum]; |
| 3595 | |
| 3596 | /* If != 0, fdata.vrsave_offset is the offset from the frame that |
| 3597 | holds the VRSAVE. */ |
| 3598 | if (fdata.vrsave_offset != 0) |
| 3599 | cache->saved_regs[tdep->ppc_vrsave_regnum].addr |
| 3600 | = cache->base + fdata.vrsave_offset; |
| 3601 | |
| 3602 | if (fdata.alloca_reg < 0) |
| 3603 | /* If no alloca register used, then fi->frame is the value of the |
| 3604 | %sp for this frame, and it is good enough. */ |
| 3605 | cache->initial_sp |
| 3606 | = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch)); |
| 3607 | else |
| 3608 | cache->initial_sp |
| 3609 | = get_frame_register_unsigned (this_frame, fdata.alloca_reg); |
| 3610 | |
| 3611 | cache->base_p = 1; |
| 3612 | return cache; |
| 3613 | } |
| 3614 | |
| 3615 | static void |
| 3616 | rs6000_frame_this_id (struct frame_info *this_frame, void **this_cache, |
| 3617 | struct frame_id *this_id) |
| 3618 | { |
| 3619 | struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame, |
| 3620 | this_cache); |
| 3621 | |
| 3622 | if (!info->base_p) |
| 3623 | { |
| 3624 | (*this_id) = frame_id_build_unavailable_stack (info->pc); |
| 3625 | return; |
| 3626 | } |
| 3627 | |
| 3628 | /* This marks the outermost frame. */ |
| 3629 | if (info->base == 0) |
| 3630 | return; |
| 3631 | |
| 3632 | (*this_id) = frame_id_build (info->base, get_frame_func (this_frame)); |
| 3633 | } |
| 3634 | |
| 3635 | static struct value * |
| 3636 | rs6000_frame_prev_register (struct frame_info *this_frame, |
| 3637 | void **this_cache, int regnum) |
| 3638 | { |
| 3639 | struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame, |
| 3640 | this_cache); |
| 3641 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
| 3642 | } |
| 3643 | |
| 3644 | static const struct frame_unwind rs6000_frame_unwind = |
| 3645 | { |
| 3646 | NORMAL_FRAME, |
| 3647 | default_frame_unwind_stop_reason, |
| 3648 | rs6000_frame_this_id, |
| 3649 | rs6000_frame_prev_register, |
| 3650 | NULL, |
| 3651 | default_frame_sniffer |
| 3652 | }; |
| 3653 | |
| 3654 | /* Allocate and initialize a frame cache for an epilogue frame. |
| 3655 | SP is restored and prev-PC is stored in LR. */ |
| 3656 | |
| 3657 | static struct rs6000_frame_cache * |
| 3658 | rs6000_epilogue_frame_cache (struct frame_info *this_frame, void **this_cache) |
| 3659 | { |
| 3660 | struct rs6000_frame_cache *cache; |
| 3661 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 3662 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3663 | |
| 3664 | if (*this_cache) |
| 3665 | return (struct rs6000_frame_cache *) *this_cache; |
| 3666 | |
| 3667 | cache = FRAME_OBSTACK_ZALLOC (struct rs6000_frame_cache); |
| 3668 | (*this_cache) = cache; |
| 3669 | cache->saved_regs = trad_frame_alloc_saved_regs (this_frame); |
| 3670 | |
| 3671 | try |
| 3672 | { |
| 3673 | /* At this point the stack looks as if we just entered the |
| 3674 | function, and the return address is stored in LR. */ |
| 3675 | CORE_ADDR sp, lr; |
| 3676 | |
| 3677 | sp = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch)); |
| 3678 | lr = get_frame_register_unsigned (this_frame, tdep->ppc_lr_regnum); |
| 3679 | |
| 3680 | cache->base = sp; |
| 3681 | cache->initial_sp = sp; |
| 3682 | |
| 3683 | trad_frame_set_value (cache->saved_regs, |
| 3684 | gdbarch_pc_regnum (gdbarch), lr); |
| 3685 | } |
| 3686 | catch (const gdb_exception_error &ex) |
| 3687 | { |
| 3688 | if (ex.error != NOT_AVAILABLE_ERROR) |
| 3689 | throw; |
| 3690 | } |
| 3691 | |
| 3692 | return cache; |
| 3693 | } |
| 3694 | |
| 3695 | /* Implementation of frame_unwind.this_id, as defined in frame_unwind.h. |
| 3696 | Return the frame ID of an epilogue frame. */ |
| 3697 | |
| 3698 | static void |
| 3699 | rs6000_epilogue_frame_this_id (struct frame_info *this_frame, |
| 3700 | void **this_cache, struct frame_id *this_id) |
| 3701 | { |
| 3702 | CORE_ADDR pc; |
| 3703 | struct rs6000_frame_cache *info = |
| 3704 | rs6000_epilogue_frame_cache (this_frame, this_cache); |
| 3705 | |
| 3706 | pc = get_frame_func (this_frame); |
| 3707 | if (info->base == 0) |
| 3708 | (*this_id) = frame_id_build_unavailable_stack (pc); |
| 3709 | else |
| 3710 | (*this_id) = frame_id_build (info->base, pc); |
| 3711 | } |
| 3712 | |
| 3713 | /* Implementation of frame_unwind.prev_register, as defined in frame_unwind.h. |
| 3714 | Return the register value of REGNUM in previous frame. */ |
| 3715 | |
| 3716 | static struct value * |
| 3717 | rs6000_epilogue_frame_prev_register (struct frame_info *this_frame, |
| 3718 | void **this_cache, int regnum) |
| 3719 | { |
| 3720 | struct rs6000_frame_cache *info = |
| 3721 | rs6000_epilogue_frame_cache (this_frame, this_cache); |
| 3722 | return trad_frame_get_prev_register (this_frame, info->saved_regs, regnum); |
| 3723 | } |
| 3724 | |
| 3725 | /* Implementation of frame_unwind.sniffer, as defined in frame_unwind.h. |
| 3726 | Check whether this an epilogue frame. */ |
| 3727 | |
| 3728 | static int |
| 3729 | rs6000_epilogue_frame_sniffer (const struct frame_unwind *self, |
| 3730 | struct frame_info *this_frame, |
| 3731 | void **this_prologue_cache) |
| 3732 | { |
| 3733 | if (frame_relative_level (this_frame) == 0) |
| 3734 | return rs6000_in_function_epilogue_frame_p (this_frame, |
| 3735 | get_frame_arch (this_frame), |
| 3736 | get_frame_pc (this_frame)); |
| 3737 | else |
| 3738 | return 0; |
| 3739 | } |
| 3740 | |
| 3741 | /* Frame unwinder for epilogue frame. This is required for reverse step-over |
| 3742 | a function without debug information. */ |
| 3743 | |
| 3744 | static const struct frame_unwind rs6000_epilogue_frame_unwind = |
| 3745 | { |
| 3746 | NORMAL_FRAME, |
| 3747 | default_frame_unwind_stop_reason, |
| 3748 | rs6000_epilogue_frame_this_id, rs6000_epilogue_frame_prev_register, |
| 3749 | NULL, |
| 3750 | rs6000_epilogue_frame_sniffer |
| 3751 | }; |
| 3752 | \f |
| 3753 | |
| 3754 | static CORE_ADDR |
| 3755 | rs6000_frame_base_address (struct frame_info *this_frame, void **this_cache) |
| 3756 | { |
| 3757 | struct rs6000_frame_cache *info = rs6000_frame_cache (this_frame, |
| 3758 | this_cache); |
| 3759 | return info->initial_sp; |
| 3760 | } |
| 3761 | |
| 3762 | static const struct frame_base rs6000_frame_base = { |
| 3763 | &rs6000_frame_unwind, |
| 3764 | rs6000_frame_base_address, |
| 3765 | rs6000_frame_base_address, |
| 3766 | rs6000_frame_base_address |
| 3767 | }; |
| 3768 | |
| 3769 | static const struct frame_base * |
| 3770 | rs6000_frame_base_sniffer (struct frame_info *this_frame) |
| 3771 | { |
| 3772 | return &rs6000_frame_base; |
| 3773 | } |
| 3774 | |
| 3775 | /* DWARF-2 frame support. Used to handle the detection of |
| 3776 | clobbered registers during function calls. */ |
| 3777 | |
| 3778 | static void |
| 3779 | ppc_dwarf2_frame_init_reg (struct gdbarch *gdbarch, int regnum, |
| 3780 | struct dwarf2_frame_state_reg *reg, |
| 3781 | struct frame_info *this_frame) |
| 3782 | { |
| 3783 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 3784 | |
| 3785 | /* PPC32 and PPC64 ABI's are the same regarding volatile and |
| 3786 | non-volatile registers. We will use the same code for both. */ |
| 3787 | |
| 3788 | /* Call-saved GP registers. */ |
| 3789 | if ((regnum >= tdep->ppc_gp0_regnum + 14 |
| 3790 | && regnum <= tdep->ppc_gp0_regnum + 31) |
| 3791 | || (regnum == tdep->ppc_gp0_regnum + 1)) |
| 3792 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; |
| 3793 | |
| 3794 | /* Call-clobbered GP registers. */ |
| 3795 | if ((regnum >= tdep->ppc_gp0_regnum + 3 |
| 3796 | && regnum <= tdep->ppc_gp0_regnum + 12) |
| 3797 | || (regnum == tdep->ppc_gp0_regnum)) |
| 3798 | reg->how = DWARF2_FRAME_REG_UNDEFINED; |
| 3799 | |
| 3800 | /* Deal with FP registers, if supported. */ |
| 3801 | if (tdep->ppc_fp0_regnum >= 0) |
| 3802 | { |
| 3803 | /* Call-saved FP registers. */ |
| 3804 | if ((regnum >= tdep->ppc_fp0_regnum + 14 |
| 3805 | && regnum <= tdep->ppc_fp0_regnum + 31)) |
| 3806 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; |
| 3807 | |
| 3808 | /* Call-clobbered FP registers. */ |
| 3809 | if ((regnum >= tdep->ppc_fp0_regnum |
| 3810 | && regnum <= tdep->ppc_fp0_regnum + 13)) |
| 3811 | reg->how = DWARF2_FRAME_REG_UNDEFINED; |
| 3812 | } |
| 3813 | |
| 3814 | /* Deal with ALTIVEC registers, if supported. */ |
| 3815 | if (tdep->ppc_vr0_regnum > 0 && tdep->ppc_vrsave_regnum > 0) |
| 3816 | { |
| 3817 | /* Call-saved Altivec registers. */ |
| 3818 | if ((regnum >= tdep->ppc_vr0_regnum + 20 |
| 3819 | && regnum <= tdep->ppc_vr0_regnum + 31) |
| 3820 | || regnum == tdep->ppc_vrsave_regnum) |
| 3821 | reg->how = DWARF2_FRAME_REG_SAME_VALUE; |
| 3822 | |
| 3823 | /* Call-clobbered Altivec registers. */ |
| 3824 | if ((regnum >= tdep->ppc_vr0_regnum |
| 3825 | && regnum <= tdep->ppc_vr0_regnum + 19)) |
| 3826 | reg->how = DWARF2_FRAME_REG_UNDEFINED; |
| 3827 | } |
| 3828 | |
| 3829 | /* Handle PC register and Stack Pointer correctly. */ |
| 3830 | if (regnum == gdbarch_pc_regnum (gdbarch)) |
| 3831 | reg->how = DWARF2_FRAME_REG_RA; |
| 3832 | else if (regnum == gdbarch_sp_regnum (gdbarch)) |
| 3833 | reg->how = DWARF2_FRAME_REG_CFA; |
| 3834 | } |
| 3835 | |
| 3836 | |
| 3837 | /* Return true if a .gnu_attributes section exists in BFD and it |
| 3838 | indicates we are using SPE extensions OR if a .PPC.EMB.apuinfo |
| 3839 | section exists in BFD and it indicates that SPE extensions are in |
| 3840 | use. Check the .gnu.attributes section first, as the binary might be |
| 3841 | compiled for SPE, but not actually using SPE instructions. */ |
| 3842 | |
| 3843 | static int |
| 3844 | bfd_uses_spe_extensions (bfd *abfd) |
| 3845 | { |
| 3846 | asection *sect; |
| 3847 | gdb_byte *contents = NULL; |
| 3848 | bfd_size_type size; |
| 3849 | gdb_byte *ptr; |
| 3850 | int success = 0; |
| 3851 | |
| 3852 | if (!abfd) |
| 3853 | return 0; |
| 3854 | |
| 3855 | #ifdef HAVE_ELF |
| 3856 | /* Using Tag_GNU_Power_ABI_Vector here is a bit of a hack, as the user |
| 3857 | could be using the SPE vector abi without actually using any spe |
| 3858 | bits whatsoever. But it's close enough for now. */ |
| 3859 | int vector_abi = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_GNU, |
| 3860 | Tag_GNU_Power_ABI_Vector); |
| 3861 | if (vector_abi == 3) |
| 3862 | return 1; |
| 3863 | #endif |
| 3864 | |
| 3865 | sect = bfd_get_section_by_name (abfd, ".PPC.EMB.apuinfo"); |
| 3866 | if (!sect) |
| 3867 | return 0; |
| 3868 | |
| 3869 | size = bfd_section_size (sect); |
| 3870 | contents = (gdb_byte *) xmalloc (size); |
| 3871 | if (!bfd_get_section_contents (abfd, sect, contents, 0, size)) |
| 3872 | { |
| 3873 | xfree (contents); |
| 3874 | return 0; |
| 3875 | } |
| 3876 | |
| 3877 | /* Parse the .PPC.EMB.apuinfo section. The layout is as follows: |
| 3878 | |
| 3879 | struct { |
| 3880 | uint32 name_len; |
| 3881 | uint32 data_len; |
| 3882 | uint32 type; |
| 3883 | char name[name_len rounded up to 4-byte alignment]; |
| 3884 | char data[data_len]; |
| 3885 | }; |
| 3886 | |
| 3887 | Technically, there's only supposed to be one such structure in a |
| 3888 | given apuinfo section, but the linker is not always vigilant about |
| 3889 | merging apuinfo sections from input files. Just go ahead and parse |
| 3890 | them all, exiting early when we discover the binary uses SPE |
| 3891 | insns. |
| 3892 | |
| 3893 | It's not specified in what endianness the information in this |
| 3894 | section is stored. Assume that it's the endianness of the BFD. */ |
| 3895 | ptr = contents; |
| 3896 | while (1) |
| 3897 | { |
| 3898 | unsigned int name_len; |
| 3899 | unsigned int data_len; |
| 3900 | unsigned int type; |
| 3901 | |
| 3902 | /* If we can't read the first three fields, we're done. */ |
| 3903 | if (size < 12) |
| 3904 | break; |
| 3905 | |
| 3906 | name_len = bfd_get_32 (abfd, ptr); |
| 3907 | name_len = (name_len + 3) & ~3U; /* Round to 4 bytes. */ |
| 3908 | data_len = bfd_get_32 (abfd, ptr + 4); |
| 3909 | type = bfd_get_32 (abfd, ptr + 8); |
| 3910 | ptr += 12; |
| 3911 | |
| 3912 | /* The name must be "APUinfo\0". */ |
| 3913 | if (name_len != 8 |
| 3914 | && strcmp ((const char *) ptr, "APUinfo") != 0) |
| 3915 | break; |
| 3916 | ptr += name_len; |
| 3917 | |
| 3918 | /* The type must be 2. */ |
| 3919 | if (type != 2) |
| 3920 | break; |
| 3921 | |
| 3922 | /* The data is stored as a series of uint32. The upper half of |
| 3923 | each uint32 indicates the particular APU used and the lower |
| 3924 | half indicates the revision of that APU. We just care about |
| 3925 | the upper half. */ |
| 3926 | |
| 3927 | /* Not 4-byte quantities. */ |
| 3928 | if (data_len & 3U) |
| 3929 | break; |
| 3930 | |
| 3931 | while (data_len) |
| 3932 | { |
| 3933 | unsigned int apuinfo = bfd_get_32 (abfd, ptr); |
| 3934 | unsigned int apu = apuinfo >> 16; |
| 3935 | ptr += 4; |
| 3936 | data_len -= 4; |
| 3937 | |
| 3938 | /* The SPE APU is 0x100; the SPEFP APU is 0x101. Accept |
| 3939 | either. */ |
| 3940 | if (apu == 0x100 || apu == 0x101) |
| 3941 | { |
| 3942 | success = 1; |
| 3943 | data_len = 0; |
| 3944 | } |
| 3945 | } |
| 3946 | |
| 3947 | if (success) |
| 3948 | break; |
| 3949 | } |
| 3950 | |
| 3951 | xfree (contents); |
| 3952 | return success; |
| 3953 | } |
| 3954 | |
| 3955 | /* These are macros for parsing instruction fields (I.1.6.28) */ |
| 3956 | |
| 3957 | #define PPC_FIELD(value, from, len) \ |
| 3958 | (((value) >> (32 - (from) - (len))) & ((1 << (len)) - 1)) |
| 3959 | #define PPC_SEXT(v, bs) \ |
| 3960 | ((((CORE_ADDR) (v) & (((CORE_ADDR) 1 << (bs)) - 1)) \ |
| 3961 | ^ ((CORE_ADDR) 1 << ((bs) - 1))) \ |
| 3962 | - ((CORE_ADDR) 1 << ((bs) - 1))) |
| 3963 | #define PPC_OP6(insn) PPC_FIELD (insn, 0, 6) |
| 3964 | #define PPC_EXTOP(insn) PPC_FIELD (insn, 21, 10) |
| 3965 | #define PPC_RT(insn) PPC_FIELD (insn, 6, 5) |
| 3966 | #define PPC_RS(insn) PPC_FIELD (insn, 6, 5) |
| 3967 | #define PPC_RA(insn) PPC_FIELD (insn, 11, 5) |
| 3968 | #define PPC_RB(insn) PPC_FIELD (insn, 16, 5) |
| 3969 | #define PPC_NB(insn) PPC_FIELD (insn, 16, 5) |
| 3970 | #define PPC_VRT(insn) PPC_FIELD (insn, 6, 5) |
| 3971 | #define PPC_FRT(insn) PPC_FIELD (insn, 6, 5) |
| 3972 | #define PPC_SPR(insn) (PPC_FIELD (insn, 11, 5) \ |
| 3973 | | (PPC_FIELD (insn, 16, 5) << 5)) |
| 3974 | #define PPC_BO(insn) PPC_FIELD (insn, 6, 5) |
| 3975 | #define PPC_T(insn) PPC_FIELD (insn, 6, 5) |
| 3976 | #define PPC_D(insn) PPC_SEXT (PPC_FIELD (insn, 16, 16), 16) |
| 3977 | #define PPC_DS(insn) PPC_SEXT (PPC_FIELD (insn, 16, 14), 14) |
| 3978 | #define PPC_DQ(insn) PPC_SEXT (PPC_FIELD (insn, 16, 12), 12) |
| 3979 | #define PPC_BIT(insn,n) ((insn & (1 << (31 - (n)))) ? 1 : 0) |
| 3980 | #define PPC_OE(insn) PPC_BIT (insn, 21) |
| 3981 | #define PPC_RC(insn) PPC_BIT (insn, 31) |
| 3982 | #define PPC_Rc(insn) PPC_BIT (insn, 21) |
| 3983 | #define PPC_LK(insn) PPC_BIT (insn, 31) |
| 3984 | #define PPC_TX(insn) PPC_BIT (insn, 31) |
| 3985 | #define PPC_LEV(insn) PPC_FIELD (insn, 20, 7) |
| 3986 | |
| 3987 | #define PPC_XT(insn) ((PPC_TX (insn) << 5) | PPC_T (insn)) |
| 3988 | #define PPC_XER_NB(xer) (xer & 0x7f) |
| 3989 | |
| 3990 | /* Record Vector-Scalar Registers. |
| 3991 | For VSR less than 32, it's represented by an FPR and an VSR-upper register. |
| 3992 | Otherwise, it's just a VR register. Record them accordingly. */ |
| 3993 | |
| 3994 | static int |
| 3995 | ppc_record_vsr (struct regcache *regcache, struct gdbarch_tdep *tdep, int vsr) |
| 3996 | { |
| 3997 | if (vsr < 0 || vsr >= 64) |
| 3998 | return -1; |
| 3999 | |
| 4000 | if (vsr >= 32) |
| 4001 | { |
| 4002 | if (tdep->ppc_vr0_regnum >= 0) |
| 4003 | record_full_arch_list_add_reg (regcache, tdep->ppc_vr0_regnum + vsr - 32); |
| 4004 | } |
| 4005 | else |
| 4006 | { |
| 4007 | if (tdep->ppc_fp0_regnum >= 0) |
| 4008 | record_full_arch_list_add_reg (regcache, tdep->ppc_fp0_regnum + vsr); |
| 4009 | if (tdep->ppc_vsr0_upper_regnum >= 0) |
| 4010 | record_full_arch_list_add_reg (regcache, |
| 4011 | tdep->ppc_vsr0_upper_regnum + vsr); |
| 4012 | } |
| 4013 | |
| 4014 | return 0; |
| 4015 | } |
| 4016 | |
| 4017 | /* Parse and record instructions primary opcode-4 at ADDR. |
| 4018 | Return 0 if successful. */ |
| 4019 | |
| 4020 | static int |
| 4021 | ppc_process_record_op4 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 4022 | CORE_ADDR addr, uint32_t insn) |
| 4023 | { |
| 4024 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 4025 | int ext = PPC_FIELD (insn, 21, 11); |
| 4026 | int vra = PPC_FIELD (insn, 11, 5); |
| 4027 | |
| 4028 | switch (ext & 0x3f) |
| 4029 | { |
| 4030 | case 32: /* Vector Multiply-High-Add Signed Halfword Saturate */ |
| 4031 | case 33: /* Vector Multiply-High-Round-Add Signed Halfword Saturate */ |
| 4032 | case 39: /* Vector Multiply-Sum Unsigned Halfword Saturate */ |
| 4033 | case 41: /* Vector Multiply-Sum Signed Halfword Saturate */ |
| 4034 | record_full_arch_list_add_reg (regcache, PPC_VSCR_REGNUM); |
| 4035 | /* FALL-THROUGH */ |
| 4036 | case 42: /* Vector Select */ |
| 4037 | case 43: /* Vector Permute */ |
| 4038 | case 59: /* Vector Permute Right-indexed */ |
| 4039 | case 44: /* Vector Shift Left Double by Octet Immediate */ |
| 4040 | case 45: /* Vector Permute and Exclusive-OR */ |
| 4041 | case 60: /* Vector Add Extended Unsigned Quadword Modulo */ |
| 4042 | case 61: /* Vector Add Extended & write Carry Unsigned Quadword */ |
| 4043 | case 62: /* Vector Subtract Extended Unsigned Quadword Modulo */ |
| 4044 | case 63: /* Vector Subtract Extended & write Carry Unsigned Quadword */ |
| 4045 | case 34: /* Vector Multiply-Low-Add Unsigned Halfword Modulo */ |
| 4046 | case 35: /* Vector Multiply-Sum Unsigned Doubleword Modulo */ |
| 4047 | case 36: /* Vector Multiply-Sum Unsigned Byte Modulo */ |
| 4048 | case 37: /* Vector Multiply-Sum Mixed Byte Modulo */ |
| 4049 | case 38: /* Vector Multiply-Sum Unsigned Halfword Modulo */ |
| 4050 | case 40: /* Vector Multiply-Sum Signed Halfword Modulo */ |
| 4051 | case 46: /* Vector Multiply-Add Single-Precision */ |
| 4052 | case 47: /* Vector Negative Multiply-Subtract Single-Precision */ |
| 4053 | record_full_arch_list_add_reg (regcache, |
| 4054 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4055 | return 0; |
| 4056 | |
| 4057 | case 48: /* Multiply-Add High Doubleword */ |
| 4058 | case 49: /* Multiply-Add High Doubleword Unsigned */ |
| 4059 | case 51: /* Multiply-Add Low Doubleword */ |
| 4060 | record_full_arch_list_add_reg (regcache, |
| 4061 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4062 | return 0; |
| 4063 | } |
| 4064 | |
| 4065 | switch ((ext & 0x1ff)) |
| 4066 | { |
| 4067 | case 385: |
| 4068 | if (vra != 0 /* Decimal Convert To Signed Quadword */ |
| 4069 | && vra != 2 /* Decimal Convert From Signed Quadword */ |
| 4070 | && vra != 4 /* Decimal Convert To Zoned */ |
| 4071 | && vra != 5 /* Decimal Convert To National */ |
| 4072 | && vra != 6 /* Decimal Convert From Zoned */ |
| 4073 | && vra != 7 /* Decimal Convert From National */ |
| 4074 | && vra != 31) /* Decimal Set Sign */ |
| 4075 | break; |
| 4076 | /* Fall through. */ |
| 4077 | /* 5.16 Decimal Integer Arithmetic Instructions */ |
| 4078 | case 1: /* Decimal Add Modulo */ |
| 4079 | case 65: /* Decimal Subtract Modulo */ |
| 4080 | |
| 4081 | case 193: /* Decimal Shift */ |
| 4082 | case 129: /* Decimal Unsigned Shift */ |
| 4083 | case 449: /* Decimal Shift and Round */ |
| 4084 | |
| 4085 | case 257: /* Decimal Truncate */ |
| 4086 | case 321: /* Decimal Unsigned Truncate */ |
| 4087 | |
| 4088 | /* Bit-21 should be set. */ |
| 4089 | if (!PPC_BIT (insn, 21)) |
| 4090 | break; |
| 4091 | |
| 4092 | record_full_arch_list_add_reg (regcache, |
| 4093 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4094 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4095 | return 0; |
| 4096 | } |
| 4097 | |
| 4098 | /* Bit-21 is used for RC */ |
| 4099 | switch (ext & 0x3ff) |
| 4100 | { |
| 4101 | case 6: /* Vector Compare Equal To Unsigned Byte */ |
| 4102 | case 70: /* Vector Compare Equal To Unsigned Halfword */ |
| 4103 | case 134: /* Vector Compare Equal To Unsigned Word */ |
| 4104 | case 199: /* Vector Compare Equal To Unsigned Doubleword */ |
| 4105 | case 774: /* Vector Compare Greater Than Signed Byte */ |
| 4106 | case 838: /* Vector Compare Greater Than Signed Halfword */ |
| 4107 | case 902: /* Vector Compare Greater Than Signed Word */ |
| 4108 | case 967: /* Vector Compare Greater Than Signed Doubleword */ |
| 4109 | case 518: /* Vector Compare Greater Than Unsigned Byte */ |
| 4110 | case 646: /* Vector Compare Greater Than Unsigned Word */ |
| 4111 | case 582: /* Vector Compare Greater Than Unsigned Halfword */ |
| 4112 | case 711: /* Vector Compare Greater Than Unsigned Doubleword */ |
| 4113 | case 966: /* Vector Compare Bounds Single-Precision */ |
| 4114 | case 198: /* Vector Compare Equal To Single-Precision */ |
| 4115 | case 454: /* Vector Compare Greater Than or Equal To Single-Precision */ |
| 4116 | case 710: /* Vector Compare Greater Than Single-Precision */ |
| 4117 | case 7: /* Vector Compare Not Equal Byte */ |
| 4118 | case 71: /* Vector Compare Not Equal Halfword */ |
| 4119 | case 135: /* Vector Compare Not Equal Word */ |
| 4120 | case 263: /* Vector Compare Not Equal or Zero Byte */ |
| 4121 | case 327: /* Vector Compare Not Equal or Zero Halfword */ |
| 4122 | case 391: /* Vector Compare Not Equal or Zero Word */ |
| 4123 | if (PPC_Rc (insn)) |
| 4124 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4125 | record_full_arch_list_add_reg (regcache, |
| 4126 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4127 | return 0; |
| 4128 | } |
| 4129 | |
| 4130 | if (ext == 1538) |
| 4131 | { |
| 4132 | switch (vra) |
| 4133 | { |
| 4134 | case 0: /* Vector Count Leading Zero Least-Significant Bits |
| 4135 | Byte */ |
| 4136 | case 1: /* Vector Count Trailing Zero Least-Significant Bits |
| 4137 | Byte */ |
| 4138 | record_full_arch_list_add_reg (regcache, |
| 4139 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4140 | return 0; |
| 4141 | |
| 4142 | case 6: /* Vector Negate Word */ |
| 4143 | case 7: /* Vector Negate Doubleword */ |
| 4144 | case 8: /* Vector Parity Byte Word */ |
| 4145 | case 9: /* Vector Parity Byte Doubleword */ |
| 4146 | case 10: /* Vector Parity Byte Quadword */ |
| 4147 | case 16: /* Vector Extend Sign Byte To Word */ |
| 4148 | case 17: /* Vector Extend Sign Halfword To Word */ |
| 4149 | case 24: /* Vector Extend Sign Byte To Doubleword */ |
| 4150 | case 25: /* Vector Extend Sign Halfword To Doubleword */ |
| 4151 | case 26: /* Vector Extend Sign Word To Doubleword */ |
| 4152 | case 28: /* Vector Count Trailing Zeros Byte */ |
| 4153 | case 29: /* Vector Count Trailing Zeros Halfword */ |
| 4154 | case 30: /* Vector Count Trailing Zeros Word */ |
| 4155 | case 31: /* Vector Count Trailing Zeros Doubleword */ |
| 4156 | record_full_arch_list_add_reg (regcache, |
| 4157 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4158 | return 0; |
| 4159 | } |
| 4160 | } |
| 4161 | |
| 4162 | switch (ext) |
| 4163 | { |
| 4164 | case 142: /* Vector Pack Unsigned Halfword Unsigned Saturate */ |
| 4165 | case 206: /* Vector Pack Unsigned Word Unsigned Saturate */ |
| 4166 | case 270: /* Vector Pack Signed Halfword Unsigned Saturate */ |
| 4167 | case 334: /* Vector Pack Signed Word Unsigned Saturate */ |
| 4168 | case 398: /* Vector Pack Signed Halfword Signed Saturate */ |
| 4169 | case 462: /* Vector Pack Signed Word Signed Saturate */ |
| 4170 | case 1230: /* Vector Pack Unsigned Doubleword Unsigned Saturate */ |
| 4171 | case 1358: /* Vector Pack Signed Doubleword Unsigned Saturate */ |
| 4172 | case 1486: /* Vector Pack Signed Doubleword Signed Saturate */ |
| 4173 | case 512: /* Vector Add Unsigned Byte Saturate */ |
| 4174 | case 576: /* Vector Add Unsigned Halfword Saturate */ |
| 4175 | case 640: /* Vector Add Unsigned Word Saturate */ |
| 4176 | case 768: /* Vector Add Signed Byte Saturate */ |
| 4177 | case 832: /* Vector Add Signed Halfword Saturate */ |
| 4178 | case 896: /* Vector Add Signed Word Saturate */ |
| 4179 | case 1536: /* Vector Subtract Unsigned Byte Saturate */ |
| 4180 | case 1600: /* Vector Subtract Unsigned Halfword Saturate */ |
| 4181 | case 1664: /* Vector Subtract Unsigned Word Saturate */ |
| 4182 | case 1792: /* Vector Subtract Signed Byte Saturate */ |
| 4183 | case 1856: /* Vector Subtract Signed Halfword Saturate */ |
| 4184 | case 1920: /* Vector Subtract Signed Word Saturate */ |
| 4185 | |
| 4186 | case 1544: /* Vector Sum across Quarter Unsigned Byte Saturate */ |
| 4187 | case 1800: /* Vector Sum across Quarter Signed Byte Saturate */ |
| 4188 | case 1608: /* Vector Sum across Quarter Signed Halfword Saturate */ |
| 4189 | case 1672: /* Vector Sum across Half Signed Word Saturate */ |
| 4190 | case 1928: /* Vector Sum across Signed Word Saturate */ |
| 4191 | case 970: /* Vector Convert To Signed Fixed-Point Word Saturate */ |
| 4192 | case 906: /* Vector Convert To Unsigned Fixed-Point Word Saturate */ |
| 4193 | record_full_arch_list_add_reg (regcache, PPC_VSCR_REGNUM); |
| 4194 | /* FALL-THROUGH */ |
| 4195 | case 12: /* Vector Merge High Byte */ |
| 4196 | case 14: /* Vector Pack Unsigned Halfword Unsigned Modulo */ |
| 4197 | case 76: /* Vector Merge High Halfword */ |
| 4198 | case 78: /* Vector Pack Unsigned Word Unsigned Modulo */ |
| 4199 | case 140: /* Vector Merge High Word */ |
| 4200 | case 268: /* Vector Merge Low Byte */ |
| 4201 | case 332: /* Vector Merge Low Halfword */ |
| 4202 | case 396: /* Vector Merge Low Word */ |
| 4203 | case 526: /* Vector Unpack High Signed Byte */ |
| 4204 | case 590: /* Vector Unpack High Signed Halfword */ |
| 4205 | case 654: /* Vector Unpack Low Signed Byte */ |
| 4206 | case 718: /* Vector Unpack Low Signed Halfword */ |
| 4207 | case 782: /* Vector Pack Pixel */ |
| 4208 | case 846: /* Vector Unpack High Pixel */ |
| 4209 | case 974: /* Vector Unpack Low Pixel */ |
| 4210 | case 1102: /* Vector Pack Unsigned Doubleword Unsigned Modulo */ |
| 4211 | case 1614: /* Vector Unpack High Signed Word */ |
| 4212 | case 1676: /* Vector Merge Odd Word */ |
| 4213 | case 1742: /* Vector Unpack Low Signed Word */ |
| 4214 | case 1932: /* Vector Merge Even Word */ |
| 4215 | case 524: /* Vector Splat Byte */ |
| 4216 | case 588: /* Vector Splat Halfword */ |
| 4217 | case 652: /* Vector Splat Word */ |
| 4218 | case 780: /* Vector Splat Immediate Signed Byte */ |
| 4219 | case 844: /* Vector Splat Immediate Signed Halfword */ |
| 4220 | case 908: /* Vector Splat Immediate Signed Word */ |
| 4221 | case 452: /* Vector Shift Left */ |
| 4222 | case 708: /* Vector Shift Right */ |
| 4223 | case 1036: /* Vector Shift Left by Octet */ |
| 4224 | case 1100: /* Vector Shift Right by Octet */ |
| 4225 | case 0: /* Vector Add Unsigned Byte Modulo */ |
| 4226 | case 64: /* Vector Add Unsigned Halfword Modulo */ |
| 4227 | case 128: /* Vector Add Unsigned Word Modulo */ |
| 4228 | case 192: /* Vector Add Unsigned Doubleword Modulo */ |
| 4229 | case 256: /* Vector Add Unsigned Quadword Modulo */ |
| 4230 | case 320: /* Vector Add & write Carry Unsigned Quadword */ |
| 4231 | case 384: /* Vector Add and Write Carry-Out Unsigned Word */ |
| 4232 | case 8: /* Vector Multiply Odd Unsigned Byte */ |
| 4233 | case 72: /* Vector Multiply Odd Unsigned Halfword */ |
| 4234 | case 136: /* Vector Multiply Odd Unsigned Word */ |
| 4235 | case 264: /* Vector Multiply Odd Signed Byte */ |
| 4236 | case 328: /* Vector Multiply Odd Signed Halfword */ |
| 4237 | case 392: /* Vector Multiply Odd Signed Word */ |
| 4238 | case 520: /* Vector Multiply Even Unsigned Byte */ |
| 4239 | case 584: /* Vector Multiply Even Unsigned Halfword */ |
| 4240 | case 648: /* Vector Multiply Even Unsigned Word */ |
| 4241 | case 776: /* Vector Multiply Even Signed Byte */ |
| 4242 | case 840: /* Vector Multiply Even Signed Halfword */ |
| 4243 | case 904: /* Vector Multiply Even Signed Word */ |
| 4244 | case 137: /* Vector Multiply Unsigned Word Modulo */ |
| 4245 | case 1024: /* Vector Subtract Unsigned Byte Modulo */ |
| 4246 | case 1088: /* Vector Subtract Unsigned Halfword Modulo */ |
| 4247 | case 1152: /* Vector Subtract Unsigned Word Modulo */ |
| 4248 | case 1216: /* Vector Subtract Unsigned Doubleword Modulo */ |
| 4249 | case 1280: /* Vector Subtract Unsigned Quadword Modulo */ |
| 4250 | case 1344: /* Vector Subtract & write Carry Unsigned Quadword */ |
| 4251 | case 1408: /* Vector Subtract and Write Carry-Out Unsigned Word */ |
| 4252 | case 1282: /* Vector Average Signed Byte */ |
| 4253 | case 1346: /* Vector Average Signed Halfword */ |
| 4254 | case 1410: /* Vector Average Signed Word */ |
| 4255 | case 1026: /* Vector Average Unsigned Byte */ |
| 4256 | case 1090: /* Vector Average Unsigned Halfword */ |
| 4257 | case 1154: /* Vector Average Unsigned Word */ |
| 4258 | case 258: /* Vector Maximum Signed Byte */ |
| 4259 | case 322: /* Vector Maximum Signed Halfword */ |
| 4260 | case 386: /* Vector Maximum Signed Word */ |
| 4261 | case 450: /* Vector Maximum Signed Doubleword */ |
| 4262 | case 2: /* Vector Maximum Unsigned Byte */ |
| 4263 | case 66: /* Vector Maximum Unsigned Halfword */ |
| 4264 | case 130: /* Vector Maximum Unsigned Word */ |
| 4265 | case 194: /* Vector Maximum Unsigned Doubleword */ |
| 4266 | case 770: /* Vector Minimum Signed Byte */ |
| 4267 | case 834: /* Vector Minimum Signed Halfword */ |
| 4268 | case 898: /* Vector Minimum Signed Word */ |
| 4269 | case 962: /* Vector Minimum Signed Doubleword */ |
| 4270 | case 514: /* Vector Minimum Unsigned Byte */ |
| 4271 | case 578: /* Vector Minimum Unsigned Halfword */ |
| 4272 | case 642: /* Vector Minimum Unsigned Word */ |
| 4273 | case 706: /* Vector Minimum Unsigned Doubleword */ |
| 4274 | case 1028: /* Vector Logical AND */ |
| 4275 | case 1668: /* Vector Logical Equivalent */ |
| 4276 | case 1092: /* Vector Logical AND with Complement */ |
| 4277 | case 1412: /* Vector Logical NAND */ |
| 4278 | case 1348: /* Vector Logical OR with Complement */ |
| 4279 | case 1156: /* Vector Logical OR */ |
| 4280 | case 1284: /* Vector Logical NOR */ |
| 4281 | case 1220: /* Vector Logical XOR */ |
| 4282 | case 4: /* Vector Rotate Left Byte */ |
| 4283 | case 132: /* Vector Rotate Left Word VX-form */ |
| 4284 | case 68: /* Vector Rotate Left Halfword */ |
| 4285 | case 196: /* Vector Rotate Left Doubleword */ |
| 4286 | case 260: /* Vector Shift Left Byte */ |
| 4287 | case 388: /* Vector Shift Left Word */ |
| 4288 | case 324: /* Vector Shift Left Halfword */ |
| 4289 | case 1476: /* Vector Shift Left Doubleword */ |
| 4290 | case 516: /* Vector Shift Right Byte */ |
| 4291 | case 644: /* Vector Shift Right Word */ |
| 4292 | case 580: /* Vector Shift Right Halfword */ |
| 4293 | case 1732: /* Vector Shift Right Doubleword */ |
| 4294 | case 772: /* Vector Shift Right Algebraic Byte */ |
| 4295 | case 900: /* Vector Shift Right Algebraic Word */ |
| 4296 | case 836: /* Vector Shift Right Algebraic Halfword */ |
| 4297 | case 964: /* Vector Shift Right Algebraic Doubleword */ |
| 4298 | case 10: /* Vector Add Single-Precision */ |
| 4299 | case 74: /* Vector Subtract Single-Precision */ |
| 4300 | case 1034: /* Vector Maximum Single-Precision */ |
| 4301 | case 1098: /* Vector Minimum Single-Precision */ |
| 4302 | case 842: /* Vector Convert From Signed Fixed-Point Word */ |
| 4303 | case 778: /* Vector Convert From Unsigned Fixed-Point Word */ |
| 4304 | case 714: /* Vector Round to Single-Precision Integer toward -Infinity */ |
| 4305 | case 522: /* Vector Round to Single-Precision Integer Nearest */ |
| 4306 | case 650: /* Vector Round to Single-Precision Integer toward +Infinity */ |
| 4307 | case 586: /* Vector Round to Single-Precision Integer toward Zero */ |
| 4308 | case 394: /* Vector 2 Raised to the Exponent Estimate Floating-Point */ |
| 4309 | case 458: /* Vector Log Base 2 Estimate Floating-Point */ |
| 4310 | case 266: /* Vector Reciprocal Estimate Single-Precision */ |
| 4311 | case 330: /* Vector Reciprocal Square Root Estimate Single-Precision */ |
| 4312 | case 1288: /* Vector AES Cipher */ |
| 4313 | case 1289: /* Vector AES Cipher Last */ |
| 4314 | case 1352: /* Vector AES Inverse Cipher */ |
| 4315 | case 1353: /* Vector AES Inverse Cipher Last */ |
| 4316 | case 1480: /* Vector AES SubBytes */ |
| 4317 | case 1730: /* Vector SHA-512 Sigma Doubleword */ |
| 4318 | case 1666: /* Vector SHA-256 Sigma Word */ |
| 4319 | case 1032: /* Vector Polynomial Multiply-Sum Byte */ |
| 4320 | case 1160: /* Vector Polynomial Multiply-Sum Word */ |
| 4321 | case 1096: /* Vector Polynomial Multiply-Sum Halfword */ |
| 4322 | case 1224: /* Vector Polynomial Multiply-Sum Doubleword */ |
| 4323 | case 1292: /* Vector Gather Bits by Bytes by Doubleword */ |
| 4324 | case 1794: /* Vector Count Leading Zeros Byte */ |
| 4325 | case 1858: /* Vector Count Leading Zeros Halfword */ |
| 4326 | case 1922: /* Vector Count Leading Zeros Word */ |
| 4327 | case 1986: /* Vector Count Leading Zeros Doubleword */ |
| 4328 | case 1795: /* Vector Population Count Byte */ |
| 4329 | case 1859: /* Vector Population Count Halfword */ |
| 4330 | case 1923: /* Vector Population Count Word */ |
| 4331 | case 1987: /* Vector Population Count Doubleword */ |
| 4332 | case 1356: /* Vector Bit Permute Quadword */ |
| 4333 | case 1484: /* Vector Bit Permute Doubleword */ |
| 4334 | case 513: /* Vector Multiply-by-10 Unsigned Quadword */ |
| 4335 | case 1: /* Vector Multiply-by-10 & write Carry Unsigned |
| 4336 | Quadword */ |
| 4337 | case 577: /* Vector Multiply-by-10 Extended Unsigned Quadword */ |
| 4338 | case 65: /* Vector Multiply-by-10 Extended & write Carry |
| 4339 | Unsigned Quadword */ |
| 4340 | case 1027: /* Vector Absolute Difference Unsigned Byte */ |
| 4341 | case 1091: /* Vector Absolute Difference Unsigned Halfword */ |
| 4342 | case 1155: /* Vector Absolute Difference Unsigned Word */ |
| 4343 | case 1796: /* Vector Shift Right Variable */ |
| 4344 | case 1860: /* Vector Shift Left Variable */ |
| 4345 | case 133: /* Vector Rotate Left Word then Mask Insert */ |
| 4346 | case 197: /* Vector Rotate Left Doubleword then Mask Insert */ |
| 4347 | case 389: /* Vector Rotate Left Word then AND with Mask */ |
| 4348 | case 453: /* Vector Rotate Left Doubleword then AND with Mask */ |
| 4349 | case 525: /* Vector Extract Unsigned Byte */ |
| 4350 | case 589: /* Vector Extract Unsigned Halfword */ |
| 4351 | case 653: /* Vector Extract Unsigned Word */ |
| 4352 | case 717: /* Vector Extract Doubleword */ |
| 4353 | case 781: /* Vector Insert Byte */ |
| 4354 | case 845: /* Vector Insert Halfword */ |
| 4355 | case 909: /* Vector Insert Word */ |
| 4356 | case 973: /* Vector Insert Doubleword */ |
| 4357 | record_full_arch_list_add_reg (regcache, |
| 4358 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4359 | return 0; |
| 4360 | |
| 4361 | case 1549: /* Vector Extract Unsigned Byte Left-Indexed */ |
| 4362 | case 1613: /* Vector Extract Unsigned Halfword Left-Indexed */ |
| 4363 | case 1677: /* Vector Extract Unsigned Word Left-Indexed */ |
| 4364 | case 1805: /* Vector Extract Unsigned Byte Right-Indexed */ |
| 4365 | case 1869: /* Vector Extract Unsigned Halfword Right-Indexed */ |
| 4366 | case 1933: /* Vector Extract Unsigned Word Right-Indexed */ |
| 4367 | record_full_arch_list_add_reg (regcache, |
| 4368 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4369 | return 0; |
| 4370 | |
| 4371 | case 1604: /* Move To Vector Status and Control Register */ |
| 4372 | record_full_arch_list_add_reg (regcache, PPC_VSCR_REGNUM); |
| 4373 | return 0; |
| 4374 | case 1540: /* Move From Vector Status and Control Register */ |
| 4375 | record_full_arch_list_add_reg (regcache, |
| 4376 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4377 | return 0; |
| 4378 | case 833: /* Decimal Copy Sign */ |
| 4379 | record_full_arch_list_add_reg (regcache, |
| 4380 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4381 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4382 | return 0; |
| 4383 | } |
| 4384 | |
| 4385 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 4386 | "at %s, 4-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 4387 | return -1; |
| 4388 | } |
| 4389 | |
| 4390 | /* Parse and record instructions of primary opcode-19 at ADDR. |
| 4391 | Return 0 if successful. */ |
| 4392 | |
| 4393 | static int |
| 4394 | ppc_process_record_op19 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 4395 | CORE_ADDR addr, uint32_t insn) |
| 4396 | { |
| 4397 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 4398 | int ext = PPC_EXTOP (insn); |
| 4399 | |
| 4400 | switch (ext & 0x01f) |
| 4401 | { |
| 4402 | case 2: /* Add PC Immediate Shifted */ |
| 4403 | record_full_arch_list_add_reg (regcache, |
| 4404 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4405 | return 0; |
| 4406 | } |
| 4407 | |
| 4408 | switch (ext) |
| 4409 | { |
| 4410 | case 0: /* Move Condition Register Field */ |
| 4411 | case 33: /* Condition Register NOR */ |
| 4412 | case 129: /* Condition Register AND with Complement */ |
| 4413 | case 193: /* Condition Register XOR */ |
| 4414 | case 225: /* Condition Register NAND */ |
| 4415 | case 257: /* Condition Register AND */ |
| 4416 | case 289: /* Condition Register Equivalent */ |
| 4417 | case 417: /* Condition Register OR with Complement */ |
| 4418 | case 449: /* Condition Register OR */ |
| 4419 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4420 | return 0; |
| 4421 | |
| 4422 | case 16: /* Branch Conditional */ |
| 4423 | case 560: /* Branch Conditional to Branch Target Address Register */ |
| 4424 | if ((PPC_BO (insn) & 0x4) == 0) |
| 4425 | record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum); |
| 4426 | /* FALL-THROUGH */ |
| 4427 | case 528: /* Branch Conditional to Count Register */ |
| 4428 | if (PPC_LK (insn)) |
| 4429 | record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum); |
| 4430 | return 0; |
| 4431 | |
| 4432 | case 150: /* Instruction Synchronize */ |
| 4433 | /* Do nothing. */ |
| 4434 | return 0; |
| 4435 | } |
| 4436 | |
| 4437 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 4438 | "at %s, 19-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 4439 | return -1; |
| 4440 | } |
| 4441 | |
| 4442 | /* Parse and record instructions of primary opcode-31 at ADDR. |
| 4443 | Return 0 if successful. */ |
| 4444 | |
| 4445 | static int |
| 4446 | ppc_process_record_op31 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 4447 | CORE_ADDR addr, uint32_t insn) |
| 4448 | { |
| 4449 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 4450 | int ext = PPC_EXTOP (insn); |
| 4451 | int tmp, nr, nb, i; |
| 4452 | CORE_ADDR at_dcsz, ea = 0; |
| 4453 | ULONGEST rb, ra, xer; |
| 4454 | int size = 0; |
| 4455 | |
| 4456 | /* These instructions have OE bit. */ |
| 4457 | switch (ext & 0x1ff) |
| 4458 | { |
| 4459 | /* These write RT and XER. Update CR if RC is set. */ |
| 4460 | case 8: /* Subtract from carrying */ |
| 4461 | case 10: /* Add carrying */ |
| 4462 | case 136: /* Subtract from extended */ |
| 4463 | case 138: /* Add extended */ |
| 4464 | case 200: /* Subtract from zero extended */ |
| 4465 | case 202: /* Add to zero extended */ |
| 4466 | case 232: /* Subtract from minus one extended */ |
| 4467 | case 234: /* Add to minus one extended */ |
| 4468 | /* CA is always altered, but SO/OV are only altered when OE=1. |
| 4469 | In any case, XER is always altered. */ |
| 4470 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4471 | if (PPC_RC (insn)) |
| 4472 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4473 | record_full_arch_list_add_reg (regcache, |
| 4474 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4475 | return 0; |
| 4476 | |
| 4477 | /* These write RT. Update CR if RC is set and update XER if OE is set. */ |
| 4478 | case 40: /* Subtract from */ |
| 4479 | case 104: /* Negate */ |
| 4480 | case 233: /* Multiply low doubleword */ |
| 4481 | case 235: /* Multiply low word */ |
| 4482 | case 266: /* Add */ |
| 4483 | case 393: /* Divide Doubleword Extended Unsigned */ |
| 4484 | case 395: /* Divide Word Extended Unsigned */ |
| 4485 | case 425: /* Divide Doubleword Extended */ |
| 4486 | case 427: /* Divide Word Extended */ |
| 4487 | case 457: /* Divide Doubleword Unsigned */ |
| 4488 | case 459: /* Divide Word Unsigned */ |
| 4489 | case 489: /* Divide Doubleword */ |
| 4490 | case 491: /* Divide Word */ |
| 4491 | if (PPC_OE (insn)) |
| 4492 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4493 | /* FALL-THROUGH */ |
| 4494 | case 9: /* Multiply High Doubleword Unsigned */ |
| 4495 | case 11: /* Multiply High Word Unsigned */ |
| 4496 | case 73: /* Multiply High Doubleword */ |
| 4497 | case 75: /* Multiply High Word */ |
| 4498 | if (PPC_RC (insn)) |
| 4499 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4500 | record_full_arch_list_add_reg (regcache, |
| 4501 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4502 | return 0; |
| 4503 | } |
| 4504 | |
| 4505 | if ((ext & 0x1f) == 15) |
| 4506 | { |
| 4507 | /* Integer Select. bit[16:20] is used for BC. */ |
| 4508 | record_full_arch_list_add_reg (regcache, |
| 4509 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4510 | return 0; |
| 4511 | } |
| 4512 | |
| 4513 | if ((ext & 0xff) == 170) |
| 4514 | { |
| 4515 | /* Add Extended using alternate carry bits */ |
| 4516 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4517 | record_full_arch_list_add_reg (regcache, |
| 4518 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4519 | return 0; |
| 4520 | } |
| 4521 | |
| 4522 | switch (ext) |
| 4523 | { |
| 4524 | case 78: /* Determine Leftmost Zero Byte */ |
| 4525 | if (PPC_RC (insn)) |
| 4526 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4527 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4528 | record_full_arch_list_add_reg (regcache, |
| 4529 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4530 | return 0; |
| 4531 | |
| 4532 | /* These only write RT. */ |
| 4533 | case 19: /* Move from condition register */ |
| 4534 | /* Move From One Condition Register Field */ |
| 4535 | case 74: /* Add and Generate Sixes */ |
| 4536 | case 74 | 0x200: /* Add and Generate Sixes (bit-21 dont-care) */ |
| 4537 | case 302: /* Move From Branch History Rolling Buffer */ |
| 4538 | case 339: /* Move From Special Purpose Register */ |
| 4539 | case 371: /* Move From Time Base [Phased-Out] */ |
| 4540 | case 309: /* Load Doubleword Monitored Indexed */ |
| 4541 | case 128: /* Set Boolean */ |
| 4542 | case 755: /* Deliver A Random Number */ |
| 4543 | record_full_arch_list_add_reg (regcache, |
| 4544 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4545 | return 0; |
| 4546 | |
| 4547 | /* These only write to RA. */ |
| 4548 | case 51: /* Move From VSR Doubleword */ |
| 4549 | case 115: /* Move From VSR Word and Zero */ |
| 4550 | case 122: /* Population count bytes */ |
| 4551 | case 378: /* Population count words */ |
| 4552 | case 506: /* Population count doublewords */ |
| 4553 | case 154: /* Parity Word */ |
| 4554 | case 186: /* Parity Doubleword */ |
| 4555 | case 252: /* Bit Permute Doubleword */ |
| 4556 | case 282: /* Convert Declets To Binary Coded Decimal */ |
| 4557 | case 314: /* Convert Binary Coded Decimal To Declets */ |
| 4558 | case 508: /* Compare bytes */ |
| 4559 | case 307: /* Move From VSR Lower Doubleword */ |
| 4560 | record_full_arch_list_add_reg (regcache, |
| 4561 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4562 | return 0; |
| 4563 | |
| 4564 | /* These write CR and optional RA. */ |
| 4565 | case 792: /* Shift Right Algebraic Word */ |
| 4566 | case 794: /* Shift Right Algebraic Doubleword */ |
| 4567 | case 824: /* Shift Right Algebraic Word Immediate */ |
| 4568 | case 826: /* Shift Right Algebraic Doubleword Immediate (413) */ |
| 4569 | case 826 | 1: /* Shift Right Algebraic Doubleword Immediate (413) */ |
| 4570 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4571 | record_full_arch_list_add_reg (regcache, |
| 4572 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4573 | /* FALL-THROUGH */ |
| 4574 | case 0: /* Compare */ |
| 4575 | case 32: /* Compare logical */ |
| 4576 | case 144: /* Move To Condition Register Fields */ |
| 4577 | /* Move To One Condition Register Field */ |
| 4578 | case 192: /* Compare Ranged Byte */ |
| 4579 | case 224: /* Compare Equal Byte */ |
| 4580 | case 576: /* Move XER to CR Extended */ |
| 4581 | case 902: /* Paste (should always fail due to single-stepping and |
| 4582 | the memory location might not be accessible, so |
| 4583 | record only CR) */ |
| 4584 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4585 | return 0; |
| 4586 | |
| 4587 | /* These write to RT. Update RA if 'update indexed.' */ |
| 4588 | case 53: /* Load Doubleword with Update Indexed */ |
| 4589 | case 119: /* Load Byte and Zero with Update Indexed */ |
| 4590 | case 311: /* Load Halfword and Zero with Update Indexed */ |
| 4591 | case 55: /* Load Word and Zero with Update Indexed */ |
| 4592 | case 375: /* Load Halfword Algebraic with Update Indexed */ |
| 4593 | case 373: /* Load Word Algebraic with Update Indexed */ |
| 4594 | record_full_arch_list_add_reg (regcache, |
| 4595 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4596 | /* FALL-THROUGH */ |
| 4597 | case 21: /* Load Doubleword Indexed */ |
| 4598 | case 52: /* Load Byte And Reserve Indexed */ |
| 4599 | case 116: /* Load Halfword And Reserve Indexed */ |
| 4600 | case 20: /* Load Word And Reserve Indexed */ |
| 4601 | case 84: /* Load Doubleword And Reserve Indexed */ |
| 4602 | case 87: /* Load Byte and Zero Indexed */ |
| 4603 | case 279: /* Load Halfword and Zero Indexed */ |
| 4604 | case 23: /* Load Word and Zero Indexed */ |
| 4605 | case 343: /* Load Halfword Algebraic Indexed */ |
| 4606 | case 341: /* Load Word Algebraic Indexed */ |
| 4607 | case 790: /* Load Halfword Byte-Reverse Indexed */ |
| 4608 | case 534: /* Load Word Byte-Reverse Indexed */ |
| 4609 | case 532: /* Load Doubleword Byte-Reverse Indexed */ |
| 4610 | case 582: /* Load Word Atomic */ |
| 4611 | case 614: /* Load Doubleword Atomic */ |
| 4612 | case 265: /* Modulo Unsigned Doubleword */ |
| 4613 | case 777: /* Modulo Signed Doubleword */ |
| 4614 | case 267: /* Modulo Unsigned Word */ |
| 4615 | case 779: /* Modulo Signed Word */ |
| 4616 | record_full_arch_list_add_reg (regcache, |
| 4617 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 4618 | return 0; |
| 4619 | |
| 4620 | case 597: /* Load String Word Immediate */ |
| 4621 | case 533: /* Load String Word Indexed */ |
| 4622 | if (ext == 597) |
| 4623 | { |
| 4624 | nr = PPC_NB (insn); |
| 4625 | if (nr == 0) |
| 4626 | nr = 32; |
| 4627 | } |
| 4628 | else |
| 4629 | { |
| 4630 | regcache_raw_read_unsigned (regcache, tdep->ppc_xer_regnum, &xer); |
| 4631 | nr = PPC_XER_NB (xer); |
| 4632 | } |
| 4633 | |
| 4634 | nr = (nr + 3) >> 2; |
| 4635 | |
| 4636 | /* If n=0, the contents of register RT are undefined. */ |
| 4637 | if (nr == 0) |
| 4638 | nr = 1; |
| 4639 | |
| 4640 | for (i = 0; i < nr; i++) |
| 4641 | record_full_arch_list_add_reg (regcache, |
| 4642 | tdep->ppc_gp0_regnum |
| 4643 | + ((PPC_RT (insn) + i) & 0x1f)); |
| 4644 | return 0; |
| 4645 | |
| 4646 | case 276: /* Load Quadword And Reserve Indexed */ |
| 4647 | tmp = tdep->ppc_gp0_regnum + (PPC_RT (insn) & ~1); |
| 4648 | record_full_arch_list_add_reg (regcache, tmp); |
| 4649 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 4650 | return 0; |
| 4651 | |
| 4652 | /* These write VRT. */ |
| 4653 | case 6: /* Load Vector for Shift Left Indexed */ |
| 4654 | case 38: /* Load Vector for Shift Right Indexed */ |
| 4655 | case 7: /* Load Vector Element Byte Indexed */ |
| 4656 | case 39: /* Load Vector Element Halfword Indexed */ |
| 4657 | case 71: /* Load Vector Element Word Indexed */ |
| 4658 | case 103: /* Load Vector Indexed */ |
| 4659 | case 359: /* Load Vector Indexed LRU */ |
| 4660 | record_full_arch_list_add_reg (regcache, |
| 4661 | tdep->ppc_vr0_regnum + PPC_VRT (insn)); |
| 4662 | return 0; |
| 4663 | |
| 4664 | /* These write FRT. Update RA if 'update indexed.' */ |
| 4665 | case 567: /* Load Floating-Point Single with Update Indexed */ |
| 4666 | case 631: /* Load Floating-Point Double with Update Indexed */ |
| 4667 | record_full_arch_list_add_reg (regcache, |
| 4668 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4669 | /* FALL-THROUGH */ |
| 4670 | case 535: /* Load Floating-Point Single Indexed */ |
| 4671 | case 599: /* Load Floating-Point Double Indexed */ |
| 4672 | case 855: /* Load Floating-Point as Integer Word Algebraic Indexed */ |
| 4673 | case 887: /* Load Floating-Point as Integer Word and Zero Indexed */ |
| 4674 | record_full_arch_list_add_reg (regcache, |
| 4675 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 4676 | return 0; |
| 4677 | |
| 4678 | case 791: /* Load Floating-Point Double Pair Indexed */ |
| 4679 | tmp = tdep->ppc_fp0_regnum + (PPC_FRT (insn) & ~1); |
| 4680 | record_full_arch_list_add_reg (regcache, tmp); |
| 4681 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 4682 | return 0; |
| 4683 | |
| 4684 | case 179: /* Move To VSR Doubleword */ |
| 4685 | case 211: /* Move To VSR Word Algebraic */ |
| 4686 | case 243: /* Move To VSR Word and Zero */ |
| 4687 | case 588: /* Load VSX Scalar Doubleword Indexed */ |
| 4688 | case 524: /* Load VSX Scalar Single-Precision Indexed */ |
| 4689 | case 76: /* Load VSX Scalar as Integer Word Algebraic Indexed */ |
| 4690 | case 12: /* Load VSX Scalar as Integer Word and Zero Indexed */ |
| 4691 | case 844: /* Load VSX Vector Doubleword*2 Indexed */ |
| 4692 | case 332: /* Load VSX Vector Doubleword & Splat Indexed */ |
| 4693 | case 780: /* Load VSX Vector Word*4 Indexed */ |
| 4694 | case 268: /* Load VSX Vector Indexed */ |
| 4695 | case 364: /* Load VSX Vector Word & Splat Indexed */ |
| 4696 | case 812: /* Load VSX Vector Halfword*8 Indexed */ |
| 4697 | case 876: /* Load VSX Vector Byte*16 Indexed */ |
| 4698 | case 269: /* Load VSX Vector with Length */ |
| 4699 | case 301: /* Load VSX Vector Left-justified with Length */ |
| 4700 | case 781: /* Load VSX Scalar as Integer Byte & Zero Indexed */ |
| 4701 | case 813: /* Load VSX Scalar as Integer Halfword & Zero Indexed */ |
| 4702 | case 403: /* Move To VSR Word & Splat */ |
| 4703 | case 435: /* Move To VSR Double Doubleword */ |
| 4704 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 4705 | return 0; |
| 4706 | |
| 4707 | /* These write RA. Update CR if RC is set. */ |
| 4708 | case 24: /* Shift Left Word */ |
| 4709 | case 26: /* Count Leading Zeros Word */ |
| 4710 | case 27: /* Shift Left Doubleword */ |
| 4711 | case 28: /* AND */ |
| 4712 | case 58: /* Count Leading Zeros Doubleword */ |
| 4713 | case 60: /* AND with Complement */ |
| 4714 | case 124: /* NOR */ |
| 4715 | case 284: /* Equivalent */ |
| 4716 | case 316: /* XOR */ |
| 4717 | case 476: /* NAND */ |
| 4718 | case 412: /* OR with Complement */ |
| 4719 | case 444: /* OR */ |
| 4720 | case 536: /* Shift Right Word */ |
| 4721 | case 539: /* Shift Right Doubleword */ |
| 4722 | case 922: /* Extend Sign Halfword */ |
| 4723 | case 954: /* Extend Sign Byte */ |
| 4724 | case 986: /* Extend Sign Word */ |
| 4725 | case 538: /* Count Trailing Zeros Word */ |
| 4726 | case 570: /* Count Trailing Zeros Doubleword */ |
| 4727 | case 890: /* Extend-Sign Word and Shift Left Immediate (445) */ |
| 4728 | case 890 | 1: /* Extend-Sign Word and Shift Left Immediate (445) */ |
| 4729 | |
| 4730 | if (ext == 444 && tdep->ppc_ppr_regnum >= 0 |
| 4731 | && (PPC_RS (insn) == PPC_RA (insn)) |
| 4732 | && (PPC_RA (insn) == PPC_RB (insn)) |
| 4733 | && !PPC_RC (insn)) |
| 4734 | { |
| 4735 | /* or Rx,Rx,Rx alters PRI in PPR. */ |
| 4736 | record_full_arch_list_add_reg (regcache, tdep->ppc_ppr_regnum); |
| 4737 | return 0; |
| 4738 | } |
| 4739 | |
| 4740 | if (PPC_RC (insn)) |
| 4741 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4742 | record_full_arch_list_add_reg (regcache, |
| 4743 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4744 | return 0; |
| 4745 | |
| 4746 | /* Store memory. */ |
| 4747 | case 181: /* Store Doubleword with Update Indexed */ |
| 4748 | case 183: /* Store Word with Update Indexed */ |
| 4749 | case 247: /* Store Byte with Update Indexed */ |
| 4750 | case 439: /* Store Half Word with Update Indexed */ |
| 4751 | case 695: /* Store Floating-Point Single with Update Indexed */ |
| 4752 | case 759: /* Store Floating-Point Double with Update Indexed */ |
| 4753 | record_full_arch_list_add_reg (regcache, |
| 4754 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 4755 | /* FALL-THROUGH */ |
| 4756 | case 135: /* Store Vector Element Byte Indexed */ |
| 4757 | case 167: /* Store Vector Element Halfword Indexed */ |
| 4758 | case 199: /* Store Vector Element Word Indexed */ |
| 4759 | case 231: /* Store Vector Indexed */ |
| 4760 | case 487: /* Store Vector Indexed LRU */ |
| 4761 | case 716: /* Store VSX Scalar Doubleword Indexed */ |
| 4762 | case 140: /* Store VSX Scalar as Integer Word Indexed */ |
| 4763 | case 652: /* Store VSX Scalar Single-Precision Indexed */ |
| 4764 | case 972: /* Store VSX Vector Doubleword*2 Indexed */ |
| 4765 | case 908: /* Store VSX Vector Word*4 Indexed */ |
| 4766 | case 149: /* Store Doubleword Indexed */ |
| 4767 | case 151: /* Store Word Indexed */ |
| 4768 | case 215: /* Store Byte Indexed */ |
| 4769 | case 407: /* Store Half Word Indexed */ |
| 4770 | case 694: /* Store Byte Conditional Indexed */ |
| 4771 | case 726: /* Store Halfword Conditional Indexed */ |
| 4772 | case 150: /* Store Word Conditional Indexed */ |
| 4773 | case 214: /* Store Doubleword Conditional Indexed */ |
| 4774 | case 182: /* Store Quadword Conditional Indexed */ |
| 4775 | case 662: /* Store Word Byte-Reverse Indexed */ |
| 4776 | case 918: /* Store Halfword Byte-Reverse Indexed */ |
| 4777 | case 660: /* Store Doubleword Byte-Reverse Indexed */ |
| 4778 | case 663: /* Store Floating-Point Single Indexed */ |
| 4779 | case 727: /* Store Floating-Point Double Indexed */ |
| 4780 | case 919: /* Store Floating-Point Double Pair Indexed */ |
| 4781 | case 983: /* Store Floating-Point as Integer Word Indexed */ |
| 4782 | case 396: /* Store VSX Vector Indexed */ |
| 4783 | case 940: /* Store VSX Vector Halfword*8 Indexed */ |
| 4784 | case 1004: /* Store VSX Vector Byte*16 Indexed */ |
| 4785 | case 909: /* Store VSX Scalar as Integer Byte Indexed */ |
| 4786 | case 941: /* Store VSX Scalar as Integer Halfword Indexed */ |
| 4787 | if (ext == 694 || ext == 726 || ext == 150 || ext == 214 || ext == 182) |
| 4788 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4789 | |
| 4790 | ra = 0; |
| 4791 | if (PPC_RA (insn) != 0) |
| 4792 | regcache_raw_read_unsigned (regcache, |
| 4793 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 4794 | regcache_raw_read_unsigned (regcache, |
| 4795 | tdep->ppc_gp0_regnum + PPC_RB (insn), &rb); |
| 4796 | ea = ra + rb; |
| 4797 | |
| 4798 | switch (ext) |
| 4799 | { |
| 4800 | case 183: /* Store Word with Update Indexed */ |
| 4801 | case 199: /* Store Vector Element Word Indexed */ |
| 4802 | case 140: /* Store VSX Scalar as Integer Word Indexed */ |
| 4803 | case 652: /* Store VSX Scalar Single-Precision Indexed */ |
| 4804 | case 151: /* Store Word Indexed */ |
| 4805 | case 150: /* Store Word Conditional Indexed */ |
| 4806 | case 662: /* Store Word Byte-Reverse Indexed */ |
| 4807 | case 663: /* Store Floating-Point Single Indexed */ |
| 4808 | case 695: /* Store Floating-Point Single with Update Indexed */ |
| 4809 | case 983: /* Store Floating-Point as Integer Word Indexed */ |
| 4810 | size = 4; |
| 4811 | break; |
| 4812 | case 247: /* Store Byte with Update Indexed */ |
| 4813 | case 135: /* Store Vector Element Byte Indexed */ |
| 4814 | case 215: /* Store Byte Indexed */ |
| 4815 | case 694: /* Store Byte Conditional Indexed */ |
| 4816 | case 909: /* Store VSX Scalar as Integer Byte Indexed */ |
| 4817 | size = 1; |
| 4818 | break; |
| 4819 | case 439: /* Store Halfword with Update Indexed */ |
| 4820 | case 167: /* Store Vector Element Halfword Indexed */ |
| 4821 | case 407: /* Store Halfword Indexed */ |
| 4822 | case 726: /* Store Halfword Conditional Indexed */ |
| 4823 | case 918: /* Store Halfword Byte-Reverse Indexed */ |
| 4824 | case 941: /* Store VSX Scalar as Integer Halfword Indexed */ |
| 4825 | size = 2; |
| 4826 | break; |
| 4827 | case 181: /* Store Doubleword with Update Indexed */ |
| 4828 | case 716: /* Store VSX Scalar Doubleword Indexed */ |
| 4829 | case 149: /* Store Doubleword Indexed */ |
| 4830 | case 214: /* Store Doubleword Conditional Indexed */ |
| 4831 | case 660: /* Store Doubleword Byte-Reverse Indexed */ |
| 4832 | case 727: /* Store Floating-Point Double Indexed */ |
| 4833 | case 759: /* Store Floating-Point Double with Update Indexed */ |
| 4834 | size = 8; |
| 4835 | break; |
| 4836 | case 972: /* Store VSX Vector Doubleword*2 Indexed */ |
| 4837 | case 908: /* Store VSX Vector Word*4 Indexed */ |
| 4838 | case 182: /* Store Quadword Conditional Indexed */ |
| 4839 | case 231: /* Store Vector Indexed */ |
| 4840 | case 487: /* Store Vector Indexed LRU */ |
| 4841 | case 919: /* Store Floating-Point Double Pair Indexed */ |
| 4842 | case 396: /* Store VSX Vector Indexed */ |
| 4843 | case 940: /* Store VSX Vector Halfword*8 Indexed */ |
| 4844 | case 1004: /* Store VSX Vector Byte*16 Indexed */ |
| 4845 | size = 16; |
| 4846 | break; |
| 4847 | default: |
| 4848 | gdb_assert (0); |
| 4849 | } |
| 4850 | |
| 4851 | /* Align address for Store Vector instructions. */ |
| 4852 | switch (ext) |
| 4853 | { |
| 4854 | case 167: /* Store Vector Element Halfword Indexed */ |
| 4855 | addr = addr & ~0x1ULL; |
| 4856 | break; |
| 4857 | |
| 4858 | case 199: /* Store Vector Element Word Indexed */ |
| 4859 | addr = addr & ~0x3ULL; |
| 4860 | break; |
| 4861 | |
| 4862 | case 231: /* Store Vector Indexed */ |
| 4863 | case 487: /* Store Vector Indexed LRU */ |
| 4864 | addr = addr & ~0xfULL; |
| 4865 | break; |
| 4866 | } |
| 4867 | |
| 4868 | record_full_arch_list_add_mem (addr, size); |
| 4869 | return 0; |
| 4870 | |
| 4871 | case 397: /* Store VSX Vector with Length */ |
| 4872 | case 429: /* Store VSX Vector Left-justified with Length */ |
| 4873 | ra = 0; |
| 4874 | if (PPC_RA (insn) != 0) |
| 4875 | regcache_raw_read_unsigned (regcache, |
| 4876 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 4877 | ea = ra; |
| 4878 | regcache_raw_read_unsigned (regcache, |
| 4879 | tdep->ppc_gp0_regnum + PPC_RB (insn), &rb); |
| 4880 | /* Store up to 16 bytes. */ |
| 4881 | nb = (rb & 0xff) > 16 ? 16 : (rb & 0xff); |
| 4882 | if (nb > 0) |
| 4883 | record_full_arch_list_add_mem (ea, nb); |
| 4884 | return 0; |
| 4885 | |
| 4886 | case 710: /* Store Word Atomic */ |
| 4887 | case 742: /* Store Doubleword Atomic */ |
| 4888 | ra = 0; |
| 4889 | if (PPC_RA (insn) != 0) |
| 4890 | regcache_raw_read_unsigned (regcache, |
| 4891 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 4892 | ea = ra; |
| 4893 | switch (ext) |
| 4894 | { |
| 4895 | case 710: /* Store Word Atomic */ |
| 4896 | size = 8; |
| 4897 | break; |
| 4898 | case 742: /* Store Doubleword Atomic */ |
| 4899 | size = 16; |
| 4900 | break; |
| 4901 | default: |
| 4902 | gdb_assert (0); |
| 4903 | } |
| 4904 | record_full_arch_list_add_mem (ea, size); |
| 4905 | return 0; |
| 4906 | |
| 4907 | case 725: /* Store String Word Immediate */ |
| 4908 | ra = 0; |
| 4909 | if (PPC_RA (insn) != 0) |
| 4910 | regcache_raw_read_unsigned (regcache, |
| 4911 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 4912 | ea += ra; |
| 4913 | |
| 4914 | nb = PPC_NB (insn); |
| 4915 | if (nb == 0) |
| 4916 | nb = 32; |
| 4917 | |
| 4918 | record_full_arch_list_add_mem (ea, nb); |
| 4919 | |
| 4920 | return 0; |
| 4921 | |
| 4922 | case 661: /* Store String Word Indexed */ |
| 4923 | ra = 0; |
| 4924 | if (PPC_RA (insn) != 0) |
| 4925 | regcache_raw_read_unsigned (regcache, |
| 4926 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 4927 | ea += ra; |
| 4928 | |
| 4929 | regcache_raw_read_unsigned (regcache, tdep->ppc_xer_regnum, &xer); |
| 4930 | nb = PPC_XER_NB (xer); |
| 4931 | |
| 4932 | if (nb != 0) |
| 4933 | { |
| 4934 | regcache_raw_read_unsigned (regcache, |
| 4935 | tdep->ppc_gp0_regnum + PPC_RB (insn), |
| 4936 | &rb); |
| 4937 | ea += rb; |
| 4938 | record_full_arch_list_add_mem (ea, nb); |
| 4939 | } |
| 4940 | |
| 4941 | return 0; |
| 4942 | |
| 4943 | case 467: /* Move To Special Purpose Register */ |
| 4944 | switch (PPC_SPR (insn)) |
| 4945 | { |
| 4946 | case 1: /* XER */ |
| 4947 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4948 | return 0; |
| 4949 | case 3: /* DSCR */ |
| 4950 | if (tdep->ppc_dscr_regnum >= 0) |
| 4951 | record_full_arch_list_add_reg (regcache, tdep->ppc_dscr_regnum); |
| 4952 | return 0; |
| 4953 | case 8: /* LR */ |
| 4954 | record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum); |
| 4955 | return 0; |
| 4956 | case 9: /* CTR */ |
| 4957 | record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum); |
| 4958 | return 0; |
| 4959 | case 256: /* VRSAVE */ |
| 4960 | record_full_arch_list_add_reg (regcache, tdep->ppc_vrsave_regnum); |
| 4961 | return 0; |
| 4962 | case 815: /* TAR */ |
| 4963 | if (tdep->ppc_tar_regnum >= 0) |
| 4964 | record_full_arch_list_add_reg (regcache, tdep->ppc_tar_regnum); |
| 4965 | return 0; |
| 4966 | case 896: |
| 4967 | case 898: /* PPR */ |
| 4968 | if (tdep->ppc_ppr_regnum >= 0) |
| 4969 | record_full_arch_list_add_reg (regcache, tdep->ppc_ppr_regnum); |
| 4970 | return 0; |
| 4971 | } |
| 4972 | |
| 4973 | goto UNKNOWN_OP; |
| 4974 | |
| 4975 | case 147: /* Move To Split Little Endian */ |
| 4976 | record_full_arch_list_add_reg (regcache, tdep->ppc_ps_regnum); |
| 4977 | return 0; |
| 4978 | |
| 4979 | case 512: /* Move to Condition Register from XER */ |
| 4980 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 4981 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 4982 | return 0; |
| 4983 | |
| 4984 | case 4: /* Trap Word */ |
| 4985 | case 68: /* Trap Doubleword */ |
| 4986 | case 430: /* Clear BHRB */ |
| 4987 | case 598: /* Synchronize */ |
| 4988 | case 62: /* Wait for Interrupt */ |
| 4989 | case 30: /* Wait */ |
| 4990 | case 22: /* Instruction Cache Block Touch */ |
| 4991 | case 854: /* Enforce In-order Execution of I/O */ |
| 4992 | case 246: /* Data Cache Block Touch for Store */ |
| 4993 | case 54: /* Data Cache Block Store */ |
| 4994 | case 86: /* Data Cache Block Flush */ |
| 4995 | case 278: /* Data Cache Block Touch */ |
| 4996 | case 758: /* Data Cache Block Allocate */ |
| 4997 | case 982: /* Instruction Cache Block Invalidate */ |
| 4998 | case 774: /* Copy */ |
| 4999 | case 838: /* CP_Abort */ |
| 5000 | return 0; |
| 5001 | |
| 5002 | case 654: /* Transaction Begin */ |
| 5003 | case 686: /* Transaction End */ |
| 5004 | case 750: /* Transaction Suspend or Resume */ |
| 5005 | case 782: /* Transaction Abort Word Conditional */ |
| 5006 | case 814: /* Transaction Abort Doubleword Conditional */ |
| 5007 | case 846: /* Transaction Abort Word Conditional Immediate */ |
| 5008 | case 878: /* Transaction Abort Doubleword Conditional Immediate */ |
| 5009 | case 910: /* Transaction Abort */ |
| 5010 | record_full_arch_list_add_reg (regcache, tdep->ppc_ps_regnum); |
| 5011 | /* FALL-THROUGH */ |
| 5012 | case 718: /* Transaction Check */ |
| 5013 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5014 | return 0; |
| 5015 | |
| 5016 | case 1014: /* Data Cache Block set to Zero */ |
| 5017 | if (target_auxv_search (current_top_target (), AT_DCACHEBSIZE, &at_dcsz) <= 0 |
| 5018 | || at_dcsz == 0) |
| 5019 | at_dcsz = 128; /* Assume 128-byte cache line size (POWER8) */ |
| 5020 | |
| 5021 | ra = 0; |
| 5022 | if (PPC_RA (insn) != 0) |
| 5023 | regcache_raw_read_unsigned (regcache, |
| 5024 | tdep->ppc_gp0_regnum + PPC_RA (insn), &ra); |
| 5025 | regcache_raw_read_unsigned (regcache, |
| 5026 | tdep->ppc_gp0_regnum + PPC_RB (insn), &rb); |
| 5027 | ea = (ra + rb) & ~((ULONGEST) (at_dcsz - 1)); |
| 5028 | record_full_arch_list_add_mem (ea, at_dcsz); |
| 5029 | return 0; |
| 5030 | } |
| 5031 | |
| 5032 | UNKNOWN_OP: |
| 5033 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 5034 | "at %s, 31-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 5035 | return -1; |
| 5036 | } |
| 5037 | |
| 5038 | /* Parse and record instructions of primary opcode-59 at ADDR. |
| 5039 | Return 0 if successful. */ |
| 5040 | |
| 5041 | static int |
| 5042 | ppc_process_record_op59 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 5043 | CORE_ADDR addr, uint32_t insn) |
| 5044 | { |
| 5045 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 5046 | int ext = PPC_EXTOP (insn); |
| 5047 | |
| 5048 | switch (ext & 0x1f) |
| 5049 | { |
| 5050 | case 18: /* Floating Divide */ |
| 5051 | case 20: /* Floating Subtract */ |
| 5052 | case 21: /* Floating Add */ |
| 5053 | case 22: /* Floating Square Root */ |
| 5054 | case 24: /* Floating Reciprocal Estimate */ |
| 5055 | case 25: /* Floating Multiply */ |
| 5056 | case 26: /* Floating Reciprocal Square Root Estimate */ |
| 5057 | case 28: /* Floating Multiply-Subtract */ |
| 5058 | case 29: /* Floating Multiply-Add */ |
| 5059 | case 30: /* Floating Negative Multiply-Subtract */ |
| 5060 | case 31: /* Floating Negative Multiply-Add */ |
| 5061 | record_full_arch_list_add_reg (regcache, |
| 5062 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5063 | if (PPC_RC (insn)) |
| 5064 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5065 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5066 | |
| 5067 | return 0; |
| 5068 | } |
| 5069 | |
| 5070 | switch (ext) |
| 5071 | { |
| 5072 | case 2: /* DFP Add */ |
| 5073 | case 3: /* DFP Quantize */ |
| 5074 | case 34: /* DFP Multiply */ |
| 5075 | case 35: /* DFP Reround */ |
| 5076 | case 67: /* DFP Quantize Immediate */ |
| 5077 | case 99: /* DFP Round To FP Integer With Inexact */ |
| 5078 | case 227: /* DFP Round To FP Integer Without Inexact */ |
| 5079 | case 258: /* DFP Convert To DFP Long! */ |
| 5080 | case 290: /* DFP Convert To Fixed */ |
| 5081 | case 514: /* DFP Subtract */ |
| 5082 | case 546: /* DFP Divide */ |
| 5083 | case 770: /* DFP Round To DFP Short! */ |
| 5084 | case 802: /* DFP Convert From Fixed */ |
| 5085 | case 834: /* DFP Encode BCD To DPD */ |
| 5086 | if (PPC_RC (insn)) |
| 5087 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5088 | record_full_arch_list_add_reg (regcache, |
| 5089 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5090 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5091 | return 0; |
| 5092 | |
| 5093 | case 130: /* DFP Compare Ordered */ |
| 5094 | case 162: /* DFP Test Exponent */ |
| 5095 | case 194: /* DFP Test Data Class */ |
| 5096 | case 226: /* DFP Test Data Group */ |
| 5097 | case 642: /* DFP Compare Unordered */ |
| 5098 | case 674: /* DFP Test Significance */ |
| 5099 | case 675: /* DFP Test Significance Immediate */ |
| 5100 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5101 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5102 | return 0; |
| 5103 | |
| 5104 | case 66: /* DFP Shift Significand Left Immediate */ |
| 5105 | case 98: /* DFP Shift Significand Right Immediate */ |
| 5106 | case 322: /* DFP Decode DPD To BCD */ |
| 5107 | case 354: /* DFP Extract Biased Exponent */ |
| 5108 | case 866: /* DFP Insert Biased Exponent */ |
| 5109 | record_full_arch_list_add_reg (regcache, |
| 5110 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5111 | if (PPC_RC (insn)) |
| 5112 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5113 | return 0; |
| 5114 | |
| 5115 | case 846: /* Floating Convert From Integer Doubleword Single */ |
| 5116 | case 974: /* Floating Convert From Integer Doubleword Unsigned |
| 5117 | Single */ |
| 5118 | record_full_arch_list_add_reg (regcache, |
| 5119 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5120 | if (PPC_RC (insn)) |
| 5121 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5122 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5123 | |
| 5124 | return 0; |
| 5125 | } |
| 5126 | |
| 5127 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 5128 | "at %s, 59-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 5129 | return -1; |
| 5130 | } |
| 5131 | |
| 5132 | /* Parse and record instructions of primary opcode-60 at ADDR. |
| 5133 | Return 0 if successful. */ |
| 5134 | |
| 5135 | static int |
| 5136 | ppc_process_record_op60 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 5137 | CORE_ADDR addr, uint32_t insn) |
| 5138 | { |
| 5139 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 5140 | int ext = PPC_EXTOP (insn); |
| 5141 | |
| 5142 | switch (ext >> 2) |
| 5143 | { |
| 5144 | case 0: /* VSX Scalar Add Single-Precision */ |
| 5145 | case 32: /* VSX Scalar Add Double-Precision */ |
| 5146 | case 24: /* VSX Scalar Divide Single-Precision */ |
| 5147 | case 56: /* VSX Scalar Divide Double-Precision */ |
| 5148 | case 176: /* VSX Scalar Copy Sign Double-Precision */ |
| 5149 | case 33: /* VSX Scalar Multiply-Add Double-Precision */ |
| 5150 | case 41: /* ditto */ |
| 5151 | case 1: /* VSX Scalar Multiply-Add Single-Precision */ |
| 5152 | case 9: /* ditto */ |
| 5153 | case 160: /* VSX Scalar Maximum Double-Precision */ |
| 5154 | case 168: /* VSX Scalar Minimum Double-Precision */ |
| 5155 | case 49: /* VSX Scalar Multiply-Subtract Double-Precision */ |
| 5156 | case 57: /* ditto */ |
| 5157 | case 17: /* VSX Scalar Multiply-Subtract Single-Precision */ |
| 5158 | case 25: /* ditto */ |
| 5159 | case 48: /* VSX Scalar Multiply Double-Precision */ |
| 5160 | case 16: /* VSX Scalar Multiply Single-Precision */ |
| 5161 | case 161: /* VSX Scalar Negative Multiply-Add Double-Precision */ |
| 5162 | case 169: /* ditto */ |
| 5163 | case 129: /* VSX Scalar Negative Multiply-Add Single-Precision */ |
| 5164 | case 137: /* ditto */ |
| 5165 | case 177: /* VSX Scalar Negative Multiply-Subtract Double-Precision */ |
| 5166 | case 185: /* ditto */ |
| 5167 | case 145: /* VSX Scalar Negative Multiply-Subtract Single-Precision */ |
| 5168 | case 153: /* ditto */ |
| 5169 | case 40: /* VSX Scalar Subtract Double-Precision */ |
| 5170 | case 8: /* VSX Scalar Subtract Single-Precision */ |
| 5171 | case 96: /* VSX Vector Add Double-Precision */ |
| 5172 | case 64: /* VSX Vector Add Single-Precision */ |
| 5173 | case 120: /* VSX Vector Divide Double-Precision */ |
| 5174 | case 88: /* VSX Vector Divide Single-Precision */ |
| 5175 | case 97: /* VSX Vector Multiply-Add Double-Precision */ |
| 5176 | case 105: /* ditto */ |
| 5177 | case 65: /* VSX Vector Multiply-Add Single-Precision */ |
| 5178 | case 73: /* ditto */ |
| 5179 | case 224: /* VSX Vector Maximum Double-Precision */ |
| 5180 | case 192: /* VSX Vector Maximum Single-Precision */ |
| 5181 | case 232: /* VSX Vector Minimum Double-Precision */ |
| 5182 | case 200: /* VSX Vector Minimum Single-Precision */ |
| 5183 | case 113: /* VSX Vector Multiply-Subtract Double-Precision */ |
| 5184 | case 121: /* ditto */ |
| 5185 | case 81: /* VSX Vector Multiply-Subtract Single-Precision */ |
| 5186 | case 89: /* ditto */ |
| 5187 | case 112: /* VSX Vector Multiply Double-Precision */ |
| 5188 | case 80: /* VSX Vector Multiply Single-Precision */ |
| 5189 | case 225: /* VSX Vector Negative Multiply-Add Double-Precision */ |
| 5190 | case 233: /* ditto */ |
| 5191 | case 193: /* VSX Vector Negative Multiply-Add Single-Precision */ |
| 5192 | case 201: /* ditto */ |
| 5193 | case 241: /* VSX Vector Negative Multiply-Subtract Double-Precision */ |
| 5194 | case 249: /* ditto */ |
| 5195 | case 209: /* VSX Vector Negative Multiply-Subtract Single-Precision */ |
| 5196 | case 217: /* ditto */ |
| 5197 | case 104: /* VSX Vector Subtract Double-Precision */ |
| 5198 | case 72: /* VSX Vector Subtract Single-Precision */ |
| 5199 | case 128: /* VSX Scalar Maximum Type-C Double-Precision */ |
| 5200 | case 136: /* VSX Scalar Minimum Type-C Double-Precision */ |
| 5201 | case 144: /* VSX Scalar Maximum Type-J Double-Precision */ |
| 5202 | case 152: /* VSX Scalar Minimum Type-J Double-Precision */ |
| 5203 | case 3: /* VSX Scalar Compare Equal Double-Precision */ |
| 5204 | case 11: /* VSX Scalar Compare Greater Than Double-Precision */ |
| 5205 | case 19: /* VSX Scalar Compare Greater Than or Equal |
| 5206 | Double-Precision */ |
| 5207 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5208 | /* FALL-THROUGH */ |
| 5209 | case 240: /* VSX Vector Copy Sign Double-Precision */ |
| 5210 | case 208: /* VSX Vector Copy Sign Single-Precision */ |
| 5211 | case 130: /* VSX Logical AND */ |
| 5212 | case 138: /* VSX Logical AND with Complement */ |
| 5213 | case 186: /* VSX Logical Equivalence */ |
| 5214 | case 178: /* VSX Logical NAND */ |
| 5215 | case 170: /* VSX Logical OR with Complement */ |
| 5216 | case 162: /* VSX Logical NOR */ |
| 5217 | case 146: /* VSX Logical OR */ |
| 5218 | case 154: /* VSX Logical XOR */ |
| 5219 | case 18: /* VSX Merge High Word */ |
| 5220 | case 50: /* VSX Merge Low Word */ |
| 5221 | case 10: /* VSX Permute Doubleword Immediate (DM=0) */ |
| 5222 | case 10 | 0x20: /* VSX Permute Doubleword Immediate (DM=1) */ |
| 5223 | case 10 | 0x40: /* VSX Permute Doubleword Immediate (DM=2) */ |
| 5224 | case 10 | 0x60: /* VSX Permute Doubleword Immediate (DM=3) */ |
| 5225 | case 2: /* VSX Shift Left Double by Word Immediate (SHW=0) */ |
| 5226 | case 2 | 0x20: /* VSX Shift Left Double by Word Immediate (SHW=1) */ |
| 5227 | case 2 | 0x40: /* VSX Shift Left Double by Word Immediate (SHW=2) */ |
| 5228 | case 2 | 0x60: /* VSX Shift Left Double by Word Immediate (SHW=3) */ |
| 5229 | case 216: /* VSX Vector Insert Exponent Single-Precision */ |
| 5230 | case 248: /* VSX Vector Insert Exponent Double-Precision */ |
| 5231 | case 26: /* VSX Vector Permute */ |
| 5232 | case 58: /* VSX Vector Permute Right-indexed */ |
| 5233 | case 213: /* VSX Vector Test Data Class Single-Precision (DC=0) */ |
| 5234 | case 213 | 0x8: /* VSX Vector Test Data Class Single-Precision (DC=1) */ |
| 5235 | case 245: /* VSX Vector Test Data Class Double-Precision (DC=0) */ |
| 5236 | case 245 | 0x8: /* VSX Vector Test Data Class Double-Precision (DC=1) */ |
| 5237 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5238 | return 0; |
| 5239 | |
| 5240 | case 61: /* VSX Scalar Test for software Divide Double-Precision */ |
| 5241 | case 125: /* VSX Vector Test for software Divide Double-Precision */ |
| 5242 | case 93: /* VSX Vector Test for software Divide Single-Precision */ |
| 5243 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5244 | return 0; |
| 5245 | |
| 5246 | case 35: /* VSX Scalar Compare Unordered Double-Precision */ |
| 5247 | case 43: /* VSX Scalar Compare Ordered Double-Precision */ |
| 5248 | case 59: /* VSX Scalar Compare Exponents Double-Precision */ |
| 5249 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5250 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5251 | return 0; |
| 5252 | } |
| 5253 | |
| 5254 | switch ((ext >> 2) & 0x7f) /* Mask out Rc-bit. */ |
| 5255 | { |
| 5256 | case 99: /* VSX Vector Compare Equal To Double-Precision */ |
| 5257 | case 67: /* VSX Vector Compare Equal To Single-Precision */ |
| 5258 | case 115: /* VSX Vector Compare Greater Than or |
| 5259 | Equal To Double-Precision */ |
| 5260 | case 83: /* VSX Vector Compare Greater Than or |
| 5261 | Equal To Single-Precision */ |
| 5262 | case 107: /* VSX Vector Compare Greater Than Double-Precision */ |
| 5263 | case 75: /* VSX Vector Compare Greater Than Single-Precision */ |
| 5264 | if (PPC_Rc (insn)) |
| 5265 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5266 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5267 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5268 | return 0; |
| 5269 | } |
| 5270 | |
| 5271 | switch (ext >> 1) |
| 5272 | { |
| 5273 | case 265: /* VSX Scalar round Double-Precision to |
| 5274 | Single-Precision and Convert to |
| 5275 | Single-Precision format */ |
| 5276 | case 344: /* VSX Scalar truncate Double-Precision to |
| 5277 | Integer and Convert to Signed Integer |
| 5278 | Doubleword format with Saturate */ |
| 5279 | case 88: /* VSX Scalar truncate Double-Precision to |
| 5280 | Integer and Convert to Signed Integer Word |
| 5281 | Format with Saturate */ |
| 5282 | case 328: /* VSX Scalar truncate Double-Precision integer |
| 5283 | and Convert to Unsigned Integer Doubleword |
| 5284 | Format with Saturate */ |
| 5285 | case 72: /* VSX Scalar truncate Double-Precision to |
| 5286 | Integer and Convert to Unsigned Integer Word |
| 5287 | Format with Saturate */ |
| 5288 | case 329: /* VSX Scalar Convert Single-Precision to |
| 5289 | Double-Precision format */ |
| 5290 | case 376: /* VSX Scalar Convert Signed Integer |
| 5291 | Doubleword to floating-point format and |
| 5292 | Round to Double-Precision format */ |
| 5293 | case 312: /* VSX Scalar Convert Signed Integer |
| 5294 | Doubleword to floating-point format and |
| 5295 | round to Single-Precision */ |
| 5296 | case 360: /* VSX Scalar Convert Unsigned Integer |
| 5297 | Doubleword to floating-point format and |
| 5298 | Round to Double-Precision format */ |
| 5299 | case 296: /* VSX Scalar Convert Unsigned Integer |
| 5300 | Doubleword to floating-point format and |
| 5301 | Round to Single-Precision */ |
| 5302 | case 73: /* VSX Scalar Round to Double-Precision Integer |
| 5303 | Using Round to Nearest Away */ |
| 5304 | case 107: /* VSX Scalar Round to Double-Precision Integer |
| 5305 | Exact using Current rounding mode */ |
| 5306 | case 121: /* VSX Scalar Round to Double-Precision Integer |
| 5307 | Using Round toward -Infinity */ |
| 5308 | case 105: /* VSX Scalar Round to Double-Precision Integer |
| 5309 | Using Round toward +Infinity */ |
| 5310 | case 89: /* VSX Scalar Round to Double-Precision Integer |
| 5311 | Using Round toward Zero */ |
| 5312 | case 90: /* VSX Scalar Reciprocal Estimate Double-Precision */ |
| 5313 | case 26: /* VSX Scalar Reciprocal Estimate Single-Precision */ |
| 5314 | case 281: /* VSX Scalar Round to Single-Precision */ |
| 5315 | case 74: /* VSX Scalar Reciprocal Square Root Estimate |
| 5316 | Double-Precision */ |
| 5317 | case 10: /* VSX Scalar Reciprocal Square Root Estimate |
| 5318 | Single-Precision */ |
| 5319 | case 75: /* VSX Scalar Square Root Double-Precision */ |
| 5320 | case 11: /* VSX Scalar Square Root Single-Precision */ |
| 5321 | case 393: /* VSX Vector round Double-Precision to |
| 5322 | Single-Precision and Convert to |
| 5323 | Single-Precision format */ |
| 5324 | case 472: /* VSX Vector truncate Double-Precision to |
| 5325 | Integer and Convert to Signed Integer |
| 5326 | Doubleword format with Saturate */ |
| 5327 | case 216: /* VSX Vector truncate Double-Precision to |
| 5328 | Integer and Convert to Signed Integer Word |
| 5329 | Format with Saturate */ |
| 5330 | case 456: /* VSX Vector truncate Double-Precision to |
| 5331 | Integer and Convert to Unsigned Integer |
| 5332 | Doubleword format with Saturate */ |
| 5333 | case 200: /* VSX Vector truncate Double-Precision to |
| 5334 | Integer and Convert to Unsigned Integer Word |
| 5335 | Format with Saturate */ |
| 5336 | case 457: /* VSX Vector Convert Single-Precision to |
| 5337 | Double-Precision format */ |
| 5338 | case 408: /* VSX Vector truncate Single-Precision to |
| 5339 | Integer and Convert to Signed Integer |
| 5340 | Doubleword format with Saturate */ |
| 5341 | case 152: /* VSX Vector truncate Single-Precision to |
| 5342 | Integer and Convert to Signed Integer Word |
| 5343 | Format with Saturate */ |
| 5344 | case 392: /* VSX Vector truncate Single-Precision to |
| 5345 | Integer and Convert to Unsigned Integer |
| 5346 | Doubleword format with Saturate */ |
| 5347 | case 136: /* VSX Vector truncate Single-Precision to |
| 5348 | Integer and Convert to Unsigned Integer Word |
| 5349 | Format with Saturate */ |
| 5350 | case 504: /* VSX Vector Convert and round Signed Integer |
| 5351 | Doubleword to Double-Precision format */ |
| 5352 | case 440: /* VSX Vector Convert and round Signed Integer |
| 5353 | Doubleword to Single-Precision format */ |
| 5354 | case 248: /* VSX Vector Convert Signed Integer Word to |
| 5355 | Double-Precision format */ |
| 5356 | case 184: /* VSX Vector Convert and round Signed Integer |
| 5357 | Word to Single-Precision format */ |
| 5358 | case 488: /* VSX Vector Convert and round Unsigned |
| 5359 | Integer Doubleword to Double-Precision format */ |
| 5360 | case 424: /* VSX Vector Convert and round Unsigned |
| 5361 | Integer Doubleword to Single-Precision format */ |
| 5362 | case 232: /* VSX Vector Convert and round Unsigned |
| 5363 | Integer Word to Double-Precision format */ |
| 5364 | case 168: /* VSX Vector Convert and round Unsigned |
| 5365 | Integer Word to Single-Precision format */ |
| 5366 | case 201: /* VSX Vector Round to Double-Precision |
| 5367 | Integer using round to Nearest Away */ |
| 5368 | case 235: /* VSX Vector Round to Double-Precision |
| 5369 | Integer Exact using Current rounding mode */ |
| 5370 | case 249: /* VSX Vector Round to Double-Precision |
| 5371 | Integer using round toward -Infinity */ |
| 5372 | case 233: /* VSX Vector Round to Double-Precision |
| 5373 | Integer using round toward +Infinity */ |
| 5374 | case 217: /* VSX Vector Round to Double-Precision |
| 5375 | Integer using round toward Zero */ |
| 5376 | case 218: /* VSX Vector Reciprocal Estimate Double-Precision */ |
| 5377 | case 154: /* VSX Vector Reciprocal Estimate Single-Precision */ |
| 5378 | case 137: /* VSX Vector Round to Single-Precision Integer |
| 5379 | Using Round to Nearest Away */ |
| 5380 | case 171: /* VSX Vector Round to Single-Precision Integer |
| 5381 | Exact Using Current rounding mode */ |
| 5382 | case 185: /* VSX Vector Round to Single-Precision Integer |
| 5383 | Using Round toward -Infinity */ |
| 5384 | case 169: /* VSX Vector Round to Single-Precision Integer |
| 5385 | Using Round toward +Infinity */ |
| 5386 | case 153: /* VSX Vector Round to Single-Precision Integer |
| 5387 | Using round toward Zero */ |
| 5388 | case 202: /* VSX Vector Reciprocal Square Root Estimate |
| 5389 | Double-Precision */ |
| 5390 | case 138: /* VSX Vector Reciprocal Square Root Estimate |
| 5391 | Single-Precision */ |
| 5392 | case 203: /* VSX Vector Square Root Double-Precision */ |
| 5393 | case 139: /* VSX Vector Square Root Single-Precision */ |
| 5394 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5395 | /* FALL-THROUGH */ |
| 5396 | case 345: /* VSX Scalar Absolute Value Double-Precision */ |
| 5397 | case 267: /* VSX Scalar Convert Scalar Single-Precision to |
| 5398 | Vector Single-Precision format Non-signalling */ |
| 5399 | case 331: /* VSX Scalar Convert Single-Precision to |
| 5400 | Double-Precision format Non-signalling */ |
| 5401 | case 361: /* VSX Scalar Negative Absolute Value Double-Precision */ |
| 5402 | case 377: /* VSX Scalar Negate Double-Precision */ |
| 5403 | case 473: /* VSX Vector Absolute Value Double-Precision */ |
| 5404 | case 409: /* VSX Vector Absolute Value Single-Precision */ |
| 5405 | case 489: /* VSX Vector Negative Absolute Value Double-Precision */ |
| 5406 | case 425: /* VSX Vector Negative Absolute Value Single-Precision */ |
| 5407 | case 505: /* VSX Vector Negate Double-Precision */ |
| 5408 | case 441: /* VSX Vector Negate Single-Precision */ |
| 5409 | case 164: /* VSX Splat Word */ |
| 5410 | case 165: /* VSX Vector Extract Unsigned Word */ |
| 5411 | case 181: /* VSX Vector Insert Word */ |
| 5412 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5413 | return 0; |
| 5414 | |
| 5415 | case 298: /* VSX Scalar Test Data Class Single-Precision */ |
| 5416 | case 362: /* VSX Scalar Test Data Class Double-Precision */ |
| 5417 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5418 | /* FALL-THROUGH */ |
| 5419 | case 106: /* VSX Scalar Test for software Square Root |
| 5420 | Double-Precision */ |
| 5421 | case 234: /* VSX Vector Test for software Square Root |
| 5422 | Double-Precision */ |
| 5423 | case 170: /* VSX Vector Test for software Square Root |
| 5424 | Single-Precision */ |
| 5425 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5426 | return 0; |
| 5427 | |
| 5428 | case 347: |
| 5429 | switch (PPC_FIELD (insn, 11, 5)) |
| 5430 | { |
| 5431 | case 0: /* VSX Scalar Extract Exponent Double-Precision */ |
| 5432 | case 1: /* VSX Scalar Extract Significand Double-Precision */ |
| 5433 | record_full_arch_list_add_reg (regcache, |
| 5434 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 5435 | return 0; |
| 5436 | case 16: /* VSX Scalar Convert Half-Precision format to |
| 5437 | Double-Precision format */ |
| 5438 | case 17: /* VSX Scalar round & Convert Double-Precision format |
| 5439 | to Half-Precision format */ |
| 5440 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5441 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5442 | return 0; |
| 5443 | } |
| 5444 | break; |
| 5445 | |
| 5446 | case 475: |
| 5447 | switch (PPC_FIELD (insn, 11, 5)) |
| 5448 | { |
| 5449 | case 24: /* VSX Vector Convert Half-Precision format to |
| 5450 | Single-Precision format */ |
| 5451 | case 25: /* VSX Vector round and Convert Single-Precision format |
| 5452 | to Half-Precision format */ |
| 5453 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5454 | /* FALL-THROUGH */ |
| 5455 | case 0: /* VSX Vector Extract Exponent Double-Precision */ |
| 5456 | case 1: /* VSX Vector Extract Significand Double-Precision */ |
| 5457 | case 7: /* VSX Vector Byte-Reverse Halfword */ |
| 5458 | case 8: /* VSX Vector Extract Exponent Single-Precision */ |
| 5459 | case 9: /* VSX Vector Extract Significand Single-Precision */ |
| 5460 | case 15: /* VSX Vector Byte-Reverse Word */ |
| 5461 | case 23: /* VSX Vector Byte-Reverse Doubleword */ |
| 5462 | case 31: /* VSX Vector Byte-Reverse Quadword */ |
| 5463 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5464 | return 0; |
| 5465 | } |
| 5466 | break; |
| 5467 | } |
| 5468 | |
| 5469 | switch (ext) |
| 5470 | { |
| 5471 | case 360: /* VSX Vector Splat Immediate Byte */ |
| 5472 | if (PPC_FIELD (insn, 11, 2) == 0) |
| 5473 | { |
| 5474 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5475 | return 0; |
| 5476 | } |
| 5477 | break; |
| 5478 | case 918: /* VSX Scalar Insert Exponent Double-Precision */ |
| 5479 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5480 | return 0; |
| 5481 | } |
| 5482 | |
| 5483 | if (((ext >> 3) & 0x3) == 3) /* VSX Select */ |
| 5484 | { |
| 5485 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5486 | return 0; |
| 5487 | } |
| 5488 | |
| 5489 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 5490 | "at %s, 60-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 5491 | return -1; |
| 5492 | } |
| 5493 | |
| 5494 | /* Parse and record instructions of primary opcode-61 at ADDR. |
| 5495 | Return 0 if successful. */ |
| 5496 | |
| 5497 | static int |
| 5498 | ppc_process_record_op61 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 5499 | CORE_ADDR addr, uint32_t insn) |
| 5500 | { |
| 5501 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 5502 | ULONGEST ea = 0; |
| 5503 | int size; |
| 5504 | |
| 5505 | switch (insn & 0x3) |
| 5506 | { |
| 5507 | case 0: /* Store Floating-Point Double Pair */ |
| 5508 | case 2: /* Store VSX Scalar Doubleword */ |
| 5509 | case 3: /* Store VSX Scalar Single */ |
| 5510 | if (PPC_RA (insn) != 0) |
| 5511 | regcache_raw_read_unsigned (regcache, |
| 5512 | tdep->ppc_gp0_regnum + PPC_RA (insn), |
| 5513 | &ea); |
| 5514 | ea += PPC_DS (insn) << 2; |
| 5515 | switch (insn & 0x3) |
| 5516 | { |
| 5517 | case 0: /* Store Floating-Point Double Pair */ |
| 5518 | size = 16; |
| 5519 | break; |
| 5520 | case 2: /* Store VSX Scalar Doubleword */ |
| 5521 | size = 8; |
| 5522 | break; |
| 5523 | case 3: /* Store VSX Scalar Single */ |
| 5524 | size = 4; |
| 5525 | break; |
| 5526 | default: |
| 5527 | gdb_assert (0); |
| 5528 | } |
| 5529 | record_full_arch_list_add_mem (ea, size); |
| 5530 | return 0; |
| 5531 | } |
| 5532 | |
| 5533 | switch (insn & 0x7) |
| 5534 | { |
| 5535 | case 1: /* Load VSX Vector */ |
| 5536 | ppc_record_vsr (regcache, tdep, PPC_XT (insn)); |
| 5537 | return 0; |
| 5538 | case 5: /* Store VSX Vector */ |
| 5539 | if (PPC_RA (insn) != 0) |
| 5540 | regcache_raw_read_unsigned (regcache, |
| 5541 | tdep->ppc_gp0_regnum + PPC_RA (insn), |
| 5542 | &ea); |
| 5543 | ea += PPC_DQ (insn) << 4; |
| 5544 | record_full_arch_list_add_mem (ea, 16); |
| 5545 | return 0; |
| 5546 | } |
| 5547 | |
| 5548 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 5549 | "at %s.\n", insn, paddress (gdbarch, addr)); |
| 5550 | return -1; |
| 5551 | } |
| 5552 | |
| 5553 | /* Parse and record instructions of primary opcode-63 at ADDR. |
| 5554 | Return 0 if successful. */ |
| 5555 | |
| 5556 | static int |
| 5557 | ppc_process_record_op63 (struct gdbarch *gdbarch, struct regcache *regcache, |
| 5558 | CORE_ADDR addr, uint32_t insn) |
| 5559 | { |
| 5560 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 5561 | int ext = PPC_EXTOP (insn); |
| 5562 | int tmp; |
| 5563 | |
| 5564 | switch (ext & 0x1f) |
| 5565 | { |
| 5566 | case 18: /* Floating Divide */ |
| 5567 | case 20: /* Floating Subtract */ |
| 5568 | case 21: /* Floating Add */ |
| 5569 | case 22: /* Floating Square Root */ |
| 5570 | case 24: /* Floating Reciprocal Estimate */ |
| 5571 | case 25: /* Floating Multiply */ |
| 5572 | case 26: /* Floating Reciprocal Square Root Estimate */ |
| 5573 | case 28: /* Floating Multiply-Subtract */ |
| 5574 | case 29: /* Floating Multiply-Add */ |
| 5575 | case 30: /* Floating Negative Multiply-Subtract */ |
| 5576 | case 31: /* Floating Negative Multiply-Add */ |
| 5577 | record_full_arch_list_add_reg (regcache, |
| 5578 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5579 | if (PPC_RC (insn)) |
| 5580 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5581 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5582 | return 0; |
| 5583 | |
| 5584 | case 23: /* Floating Select */ |
| 5585 | record_full_arch_list_add_reg (regcache, |
| 5586 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5587 | if (PPC_RC (insn)) |
| 5588 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5589 | return 0; |
| 5590 | } |
| 5591 | |
| 5592 | switch (ext & 0xff) |
| 5593 | { |
| 5594 | case 5: /* VSX Scalar Round to Quad-Precision Integer */ |
| 5595 | case 37: /* VSX Scalar Round Quad-Precision to Double-Extended |
| 5596 | Precision */ |
| 5597 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5598 | ppc_record_vsr (regcache, tdep, PPC_VRT (insn) + 32); |
| 5599 | return 0; |
| 5600 | } |
| 5601 | |
| 5602 | switch (ext) |
| 5603 | { |
| 5604 | case 2: /* DFP Add Quad */ |
| 5605 | case 3: /* DFP Quantize Quad */ |
| 5606 | case 34: /* DFP Multiply Quad */ |
| 5607 | case 35: /* DFP Reround Quad */ |
| 5608 | case 67: /* DFP Quantize Immediate Quad */ |
| 5609 | case 99: /* DFP Round To FP Integer With Inexact Quad */ |
| 5610 | case 227: /* DFP Round To FP Integer Without Inexact Quad */ |
| 5611 | case 258: /* DFP Convert To DFP Extended Quad */ |
| 5612 | case 514: /* DFP Subtract Quad */ |
| 5613 | case 546: /* DFP Divide Quad */ |
| 5614 | case 770: /* DFP Round To DFP Long Quad */ |
| 5615 | case 802: /* DFP Convert From Fixed Quad */ |
| 5616 | case 834: /* DFP Encode BCD To DPD Quad */ |
| 5617 | if (PPC_RC (insn)) |
| 5618 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5619 | tmp = tdep->ppc_fp0_regnum + (PPC_FRT (insn) & ~1); |
| 5620 | record_full_arch_list_add_reg (regcache, tmp); |
| 5621 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 5622 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5623 | return 0; |
| 5624 | |
| 5625 | case 130: /* DFP Compare Ordered Quad */ |
| 5626 | case 162: /* DFP Test Exponent Quad */ |
| 5627 | case 194: /* DFP Test Data Class Quad */ |
| 5628 | case 226: /* DFP Test Data Group Quad */ |
| 5629 | case 642: /* DFP Compare Unordered Quad */ |
| 5630 | case 674: /* DFP Test Significance Quad */ |
| 5631 | case 675: /* DFP Test Significance Immediate Quad */ |
| 5632 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5633 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5634 | return 0; |
| 5635 | |
| 5636 | case 66: /* DFP Shift Significand Left Immediate Quad */ |
| 5637 | case 98: /* DFP Shift Significand Right Immediate Quad */ |
| 5638 | case 322: /* DFP Decode DPD To BCD Quad */ |
| 5639 | case 866: /* DFP Insert Biased Exponent Quad */ |
| 5640 | tmp = tdep->ppc_fp0_regnum + (PPC_FRT (insn) & ~1); |
| 5641 | record_full_arch_list_add_reg (regcache, tmp); |
| 5642 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 5643 | if (PPC_RC (insn)) |
| 5644 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5645 | return 0; |
| 5646 | |
| 5647 | case 290: /* DFP Convert To Fixed Quad */ |
| 5648 | record_full_arch_list_add_reg (regcache, |
| 5649 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5650 | if (PPC_RC (insn)) |
| 5651 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5652 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5653 | return 0; |
| 5654 | |
| 5655 | case 354: /* DFP Extract Biased Exponent Quad */ |
| 5656 | record_full_arch_list_add_reg (regcache, |
| 5657 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5658 | if (PPC_RC (insn)) |
| 5659 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5660 | return 0; |
| 5661 | |
| 5662 | case 12: /* Floating Round to Single-Precision */ |
| 5663 | case 14: /* Floating Convert To Integer Word */ |
| 5664 | case 15: /* Floating Convert To Integer Word |
| 5665 | with round toward Zero */ |
| 5666 | case 142: /* Floating Convert To Integer Word Unsigned */ |
| 5667 | case 143: /* Floating Convert To Integer Word Unsigned |
| 5668 | with round toward Zero */ |
| 5669 | case 392: /* Floating Round to Integer Nearest */ |
| 5670 | case 424: /* Floating Round to Integer Toward Zero */ |
| 5671 | case 456: /* Floating Round to Integer Plus */ |
| 5672 | case 488: /* Floating Round to Integer Minus */ |
| 5673 | case 814: /* Floating Convert To Integer Doubleword */ |
| 5674 | case 815: /* Floating Convert To Integer Doubleword |
| 5675 | with round toward Zero */ |
| 5676 | case 846: /* Floating Convert From Integer Doubleword */ |
| 5677 | case 942: /* Floating Convert To Integer Doubleword Unsigned */ |
| 5678 | case 943: /* Floating Convert To Integer Doubleword Unsigned |
| 5679 | with round toward Zero */ |
| 5680 | case 974: /* Floating Convert From Integer Doubleword Unsigned */ |
| 5681 | record_full_arch_list_add_reg (regcache, |
| 5682 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5683 | if (PPC_RC (insn)) |
| 5684 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5685 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5686 | return 0; |
| 5687 | |
| 5688 | case 583: |
| 5689 | switch (PPC_FIELD (insn, 11, 5)) |
| 5690 | { |
| 5691 | case 1: /* Move From FPSCR & Clear Enables */ |
| 5692 | case 20: /* Move From FPSCR Control & set DRN */ |
| 5693 | case 21: /* Move From FPSCR Control & set DRN Immediate */ |
| 5694 | case 22: /* Move From FPSCR Control & set RN */ |
| 5695 | case 23: /* Move From FPSCR Control & set RN Immediate */ |
| 5696 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5697 | /* Fall through. */ |
| 5698 | case 0: /* Move From FPSCR */ |
| 5699 | case 24: /* Move From FPSCR Lightweight */ |
| 5700 | if (PPC_FIELD (insn, 11, 5) == 0 && PPC_RC (insn)) |
| 5701 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5702 | record_full_arch_list_add_reg (regcache, |
| 5703 | tdep->ppc_fp0_regnum |
| 5704 | + PPC_FRT (insn)); |
| 5705 | return 0; |
| 5706 | } |
| 5707 | break; |
| 5708 | |
| 5709 | case 8: /* Floating Copy Sign */ |
| 5710 | case 40: /* Floating Negate */ |
| 5711 | case 72: /* Floating Move Register */ |
| 5712 | case 136: /* Floating Negative Absolute Value */ |
| 5713 | case 264: /* Floating Absolute Value */ |
| 5714 | record_full_arch_list_add_reg (regcache, |
| 5715 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5716 | if (PPC_RC (insn)) |
| 5717 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5718 | return 0; |
| 5719 | |
| 5720 | case 838: /* Floating Merge Odd Word */ |
| 5721 | case 966: /* Floating Merge Even Word */ |
| 5722 | record_full_arch_list_add_reg (regcache, |
| 5723 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5724 | return 0; |
| 5725 | |
| 5726 | case 38: /* Move To FPSCR Bit 1 */ |
| 5727 | case 70: /* Move To FPSCR Bit 0 */ |
| 5728 | case 134: /* Move To FPSCR Field Immediate */ |
| 5729 | case 711: /* Move To FPSCR Fields */ |
| 5730 | if (PPC_RC (insn)) |
| 5731 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5732 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5733 | return 0; |
| 5734 | |
| 5735 | case 0: /* Floating Compare Unordered */ |
| 5736 | case 32: /* Floating Compare Ordered */ |
| 5737 | case 64: /* Move to Condition Register from FPSCR */ |
| 5738 | case 132: /* VSX Scalar Compare Ordered Quad-Precision */ |
| 5739 | case 164: /* VSX Scalar Compare Exponents Quad-Precision */ |
| 5740 | case 644: /* VSX Scalar Compare Unordered Quad-Precision */ |
| 5741 | case 708: /* VSX Scalar Test Data Class Quad-Precision */ |
| 5742 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5743 | /* FALL-THROUGH */ |
| 5744 | case 128: /* Floating Test for software Divide */ |
| 5745 | case 160: /* Floating Test for software Square Root */ |
| 5746 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5747 | return 0; |
| 5748 | |
| 5749 | case 4: /* VSX Scalar Add Quad-Precision */ |
| 5750 | case 36: /* VSX Scalar Multiply Quad-Precision */ |
| 5751 | case 388: /* VSX Scalar Multiply-Add Quad-Precision */ |
| 5752 | case 420: /* VSX Scalar Multiply-Subtract Quad-Precision */ |
| 5753 | case 452: /* VSX Scalar Negative Multiply-Add Quad-Precision */ |
| 5754 | case 484: /* VSX Scalar Negative Multiply-Subtract |
| 5755 | Quad-Precision */ |
| 5756 | case 516: /* VSX Scalar Subtract Quad-Precision */ |
| 5757 | case 548: /* VSX Scalar Divide Quad-Precision */ |
| 5758 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5759 | /* FALL-THROUGH */ |
| 5760 | case 100: /* VSX Scalar Copy Sign Quad-Precision */ |
| 5761 | case 868: /* VSX Scalar Insert Exponent Quad-Precision */ |
| 5762 | ppc_record_vsr (regcache, tdep, PPC_VRT (insn) + 32); |
| 5763 | return 0; |
| 5764 | |
| 5765 | case 804: |
| 5766 | switch (PPC_FIELD (insn, 11, 5)) |
| 5767 | { |
| 5768 | case 27: /* VSX Scalar Square Root Quad-Precision */ |
| 5769 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5770 | /* FALL-THROUGH */ |
| 5771 | case 0: /* VSX Scalar Absolute Quad-Precision */ |
| 5772 | case 2: /* VSX Scalar Extract Exponent Quad-Precision */ |
| 5773 | case 8: /* VSX Scalar Negative Absolute Quad-Precision */ |
| 5774 | case 16: /* VSX Scalar Negate Quad-Precision */ |
| 5775 | case 18: /* VSX Scalar Extract Significand Quad-Precision */ |
| 5776 | ppc_record_vsr (regcache, tdep, PPC_VRT (insn) + 32); |
| 5777 | return 0; |
| 5778 | } |
| 5779 | break; |
| 5780 | |
| 5781 | case 836: |
| 5782 | switch (PPC_FIELD (insn, 11, 5)) |
| 5783 | { |
| 5784 | case 1: /* VSX Scalar truncate & Convert Quad-Precision format |
| 5785 | to Unsigned Word format */ |
| 5786 | case 2: /* VSX Scalar Convert Unsigned Doubleword format to |
| 5787 | Quad-Precision format */ |
| 5788 | case 9: /* VSX Scalar truncate & Convert Quad-Precision format |
| 5789 | to Signed Word format */ |
| 5790 | case 10: /* VSX Scalar Convert Signed Doubleword format to |
| 5791 | Quad-Precision format */ |
| 5792 | case 17: /* VSX Scalar truncate & Convert Quad-Precision format |
| 5793 | to Unsigned Doubleword format */ |
| 5794 | case 20: /* VSX Scalar round & Convert Quad-Precision format to |
| 5795 | Double-Precision format */ |
| 5796 | case 22: /* VSX Scalar Convert Double-Precision format to |
| 5797 | Quad-Precision format */ |
| 5798 | case 25: /* VSX Scalar truncate & Convert Quad-Precision format |
| 5799 | to Signed Doubleword format */ |
| 5800 | record_full_arch_list_add_reg (regcache, tdep->ppc_fpscr_regnum); |
| 5801 | ppc_record_vsr (regcache, tdep, PPC_VRT (insn) + 32); |
| 5802 | return 0; |
| 5803 | } |
| 5804 | } |
| 5805 | |
| 5806 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 5807 | "at %s, 63-%d.\n", insn, paddress (gdbarch, addr), ext); |
| 5808 | return -1; |
| 5809 | } |
| 5810 | |
| 5811 | /* Parse the current instruction and record the values of the registers and |
| 5812 | memory that will be changed in current instruction to "record_arch_list". |
| 5813 | Return -1 if something wrong. */ |
| 5814 | |
| 5815 | int |
| 5816 | ppc_process_record (struct gdbarch *gdbarch, struct regcache *regcache, |
| 5817 | CORE_ADDR addr) |
| 5818 | { |
| 5819 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 5820 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 5821 | uint32_t insn; |
| 5822 | int op6, tmp, i; |
| 5823 | |
| 5824 | insn = read_memory_unsigned_integer (addr, 4, byte_order); |
| 5825 | op6 = PPC_OP6 (insn); |
| 5826 | |
| 5827 | switch (op6) |
| 5828 | { |
| 5829 | case 2: /* Trap Doubleword Immediate */ |
| 5830 | case 3: /* Trap Word Immediate */ |
| 5831 | /* Do nothing. */ |
| 5832 | break; |
| 5833 | |
| 5834 | case 4: |
| 5835 | if (ppc_process_record_op4 (gdbarch, regcache, addr, insn) != 0) |
| 5836 | return -1; |
| 5837 | break; |
| 5838 | |
| 5839 | case 17: /* System call */ |
| 5840 | if (PPC_LEV (insn) != 0) |
| 5841 | goto UNKNOWN_OP; |
| 5842 | |
| 5843 | if (tdep->ppc_syscall_record != NULL) |
| 5844 | { |
| 5845 | if (tdep->ppc_syscall_record (regcache) != 0) |
| 5846 | return -1; |
| 5847 | } |
| 5848 | else |
| 5849 | { |
| 5850 | printf_unfiltered (_("no syscall record support\n")); |
| 5851 | return -1; |
| 5852 | } |
| 5853 | break; |
| 5854 | |
| 5855 | case 7: /* Multiply Low Immediate */ |
| 5856 | record_full_arch_list_add_reg (regcache, |
| 5857 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 5858 | break; |
| 5859 | |
| 5860 | case 8: /* Subtract From Immediate Carrying */ |
| 5861 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 5862 | record_full_arch_list_add_reg (regcache, |
| 5863 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 5864 | break; |
| 5865 | |
| 5866 | case 10: /* Compare Logical Immediate */ |
| 5867 | case 11: /* Compare Immediate */ |
| 5868 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5869 | break; |
| 5870 | |
| 5871 | case 13: /* Add Immediate Carrying and Record */ |
| 5872 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5873 | /* FALL-THROUGH */ |
| 5874 | case 12: /* Add Immediate Carrying */ |
| 5875 | record_full_arch_list_add_reg (regcache, tdep->ppc_xer_regnum); |
| 5876 | /* FALL-THROUGH */ |
| 5877 | case 14: /* Add Immediate */ |
| 5878 | case 15: /* Add Immediate Shifted */ |
| 5879 | record_full_arch_list_add_reg (regcache, |
| 5880 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 5881 | break; |
| 5882 | |
| 5883 | case 16: /* Branch Conditional */ |
| 5884 | if ((PPC_BO (insn) & 0x4) == 0) |
| 5885 | record_full_arch_list_add_reg (regcache, tdep->ppc_ctr_regnum); |
| 5886 | /* FALL-THROUGH */ |
| 5887 | case 18: /* Branch */ |
| 5888 | if (PPC_LK (insn)) |
| 5889 | record_full_arch_list_add_reg (regcache, tdep->ppc_lr_regnum); |
| 5890 | break; |
| 5891 | |
| 5892 | case 19: |
| 5893 | if (ppc_process_record_op19 (gdbarch, regcache, addr, insn) != 0) |
| 5894 | return -1; |
| 5895 | break; |
| 5896 | |
| 5897 | case 20: /* Rotate Left Word Immediate then Mask Insert */ |
| 5898 | case 21: /* Rotate Left Word Immediate then AND with Mask */ |
| 5899 | case 23: /* Rotate Left Word then AND with Mask */ |
| 5900 | case 30: /* Rotate Left Doubleword Immediate then Clear Left */ |
| 5901 | /* Rotate Left Doubleword Immediate then Clear Right */ |
| 5902 | /* Rotate Left Doubleword Immediate then Clear */ |
| 5903 | /* Rotate Left Doubleword then Clear Left */ |
| 5904 | /* Rotate Left Doubleword then Clear Right */ |
| 5905 | /* Rotate Left Doubleword Immediate then Mask Insert */ |
| 5906 | if (PPC_RC (insn)) |
| 5907 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5908 | record_full_arch_list_add_reg (regcache, |
| 5909 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 5910 | break; |
| 5911 | |
| 5912 | case 28: /* AND Immediate */ |
| 5913 | case 29: /* AND Immediate Shifted */ |
| 5914 | record_full_arch_list_add_reg (regcache, tdep->ppc_cr_regnum); |
| 5915 | /* FALL-THROUGH */ |
| 5916 | case 24: /* OR Immediate */ |
| 5917 | case 25: /* OR Immediate Shifted */ |
| 5918 | case 26: /* XOR Immediate */ |
| 5919 | case 27: /* XOR Immediate Shifted */ |
| 5920 | record_full_arch_list_add_reg (regcache, |
| 5921 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 5922 | break; |
| 5923 | |
| 5924 | case 31: |
| 5925 | if (ppc_process_record_op31 (gdbarch, regcache, addr, insn) != 0) |
| 5926 | return -1; |
| 5927 | break; |
| 5928 | |
| 5929 | case 33: /* Load Word and Zero with Update */ |
| 5930 | case 35: /* Load Byte and Zero with Update */ |
| 5931 | case 41: /* Load Halfword and Zero with Update */ |
| 5932 | case 43: /* Load Halfword Algebraic with Update */ |
| 5933 | record_full_arch_list_add_reg (regcache, |
| 5934 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 5935 | /* FALL-THROUGH */ |
| 5936 | case 32: /* Load Word and Zero */ |
| 5937 | case 34: /* Load Byte and Zero */ |
| 5938 | case 40: /* Load Halfword and Zero */ |
| 5939 | case 42: /* Load Halfword Algebraic */ |
| 5940 | record_full_arch_list_add_reg (regcache, |
| 5941 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 5942 | break; |
| 5943 | |
| 5944 | case 46: /* Load Multiple Word */ |
| 5945 | for (i = PPC_RT (insn); i < 32; i++) |
| 5946 | record_full_arch_list_add_reg (regcache, tdep->ppc_gp0_regnum + i); |
| 5947 | break; |
| 5948 | |
| 5949 | case 56: /* Load Quadword */ |
| 5950 | tmp = tdep->ppc_gp0_regnum + (PPC_RT (insn) & ~1); |
| 5951 | record_full_arch_list_add_reg (regcache, tmp); |
| 5952 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 5953 | break; |
| 5954 | |
| 5955 | case 49: /* Load Floating-Point Single with Update */ |
| 5956 | case 51: /* Load Floating-Point Double with Update */ |
| 5957 | record_full_arch_list_add_reg (regcache, |
| 5958 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 5959 | /* FALL-THROUGH */ |
| 5960 | case 48: /* Load Floating-Point Single */ |
| 5961 | case 50: /* Load Floating-Point Double */ |
| 5962 | record_full_arch_list_add_reg (regcache, |
| 5963 | tdep->ppc_fp0_regnum + PPC_FRT (insn)); |
| 5964 | break; |
| 5965 | |
| 5966 | case 47: /* Store Multiple Word */ |
| 5967 | { |
| 5968 | ULONGEST iaddr = 0; |
| 5969 | |
| 5970 | if (PPC_RA (insn) != 0) |
| 5971 | regcache_raw_read_unsigned (regcache, |
| 5972 | tdep->ppc_gp0_regnum + PPC_RA (insn), |
| 5973 | &iaddr); |
| 5974 | |
| 5975 | iaddr += PPC_D (insn); |
| 5976 | record_full_arch_list_add_mem (iaddr, 4 * (32 - PPC_RS (insn))); |
| 5977 | } |
| 5978 | break; |
| 5979 | |
| 5980 | case 37: /* Store Word with Update */ |
| 5981 | case 39: /* Store Byte with Update */ |
| 5982 | case 45: /* Store Halfword with Update */ |
| 5983 | case 53: /* Store Floating-Point Single with Update */ |
| 5984 | case 55: /* Store Floating-Point Double with Update */ |
| 5985 | record_full_arch_list_add_reg (regcache, |
| 5986 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 5987 | /* FALL-THROUGH */ |
| 5988 | case 36: /* Store Word */ |
| 5989 | case 38: /* Store Byte */ |
| 5990 | case 44: /* Store Halfword */ |
| 5991 | case 52: /* Store Floating-Point Single */ |
| 5992 | case 54: /* Store Floating-Point Double */ |
| 5993 | { |
| 5994 | ULONGEST iaddr = 0; |
| 5995 | int size = -1; |
| 5996 | |
| 5997 | if (PPC_RA (insn) != 0) |
| 5998 | regcache_raw_read_unsigned (regcache, |
| 5999 | tdep->ppc_gp0_regnum + PPC_RA (insn), |
| 6000 | &iaddr); |
| 6001 | iaddr += PPC_D (insn); |
| 6002 | |
| 6003 | if (op6 == 36 || op6 == 37 || op6 == 52 || op6 == 53) |
| 6004 | size = 4; |
| 6005 | else if (op6 == 54 || op6 == 55) |
| 6006 | size = 8; |
| 6007 | else if (op6 == 44 || op6 == 45) |
| 6008 | size = 2; |
| 6009 | else if (op6 == 38 || op6 == 39) |
| 6010 | size = 1; |
| 6011 | else |
| 6012 | gdb_assert (0); |
| 6013 | |
| 6014 | record_full_arch_list_add_mem (iaddr, size); |
| 6015 | } |
| 6016 | break; |
| 6017 | |
| 6018 | case 57: |
| 6019 | switch (insn & 0x3) |
| 6020 | { |
| 6021 | case 0: /* Load Floating-Point Double Pair */ |
| 6022 | tmp = tdep->ppc_fp0_regnum + (PPC_RT (insn) & ~1); |
| 6023 | record_full_arch_list_add_reg (regcache, tmp); |
| 6024 | record_full_arch_list_add_reg (regcache, tmp + 1); |
| 6025 | break; |
| 6026 | case 2: /* Load VSX Scalar Doubleword */ |
| 6027 | case 3: /* Load VSX Scalar Single */ |
| 6028 | ppc_record_vsr (regcache, tdep, PPC_VRT (insn) + 32); |
| 6029 | break; |
| 6030 | default: |
| 6031 | goto UNKNOWN_OP; |
| 6032 | } |
| 6033 | break; |
| 6034 | |
| 6035 | case 58: /* Load Doubleword */ |
| 6036 | /* Load Doubleword with Update */ |
| 6037 | /* Load Word Algebraic */ |
| 6038 | if (PPC_FIELD (insn, 30, 2) > 2) |
| 6039 | goto UNKNOWN_OP; |
| 6040 | |
| 6041 | record_full_arch_list_add_reg (regcache, |
| 6042 | tdep->ppc_gp0_regnum + PPC_RT (insn)); |
| 6043 | if (PPC_BIT (insn, 31)) |
| 6044 | record_full_arch_list_add_reg (regcache, |
| 6045 | tdep->ppc_gp0_regnum + PPC_RA (insn)); |
| 6046 | break; |
| 6047 | |
| 6048 | case 59: |
| 6049 | if (ppc_process_record_op59 (gdbarch, regcache, addr, insn) != 0) |
| 6050 | return -1; |
| 6051 | break; |
| 6052 | |
| 6053 | case 60: |
| 6054 | if (ppc_process_record_op60 (gdbarch, regcache, addr, insn) != 0) |
| 6055 | return -1; |
| 6056 | break; |
| 6057 | |
| 6058 | case 61: |
| 6059 | if (ppc_process_record_op61 (gdbarch, regcache, addr, insn) != 0) |
| 6060 | return -1; |
| 6061 | break; |
| 6062 | |
| 6063 | case 62: /* Store Doubleword */ |
| 6064 | /* Store Doubleword with Update */ |
| 6065 | /* Store Quadword with Update */ |
| 6066 | { |
| 6067 | ULONGEST iaddr = 0; |
| 6068 | int size; |
| 6069 | int sub2 = PPC_FIELD (insn, 30, 2); |
| 6070 | |
| 6071 | if (sub2 > 2) |
| 6072 | goto UNKNOWN_OP; |
| 6073 | |
| 6074 | if (PPC_RA (insn) != 0) |
| 6075 | regcache_raw_read_unsigned (regcache, |
| 6076 | tdep->ppc_gp0_regnum + PPC_RA (insn), |
| 6077 | &iaddr); |
| 6078 | |
| 6079 | size = (sub2 == 2) ? 16 : 8; |
| 6080 | |
| 6081 | iaddr += PPC_DS (insn) << 2; |
| 6082 | record_full_arch_list_add_mem (iaddr, size); |
| 6083 | |
| 6084 | if (op6 == 62 && sub2 == 1) |
| 6085 | record_full_arch_list_add_reg (regcache, |
| 6086 | tdep->ppc_gp0_regnum + |
| 6087 | PPC_RA (insn)); |
| 6088 | |
| 6089 | break; |
| 6090 | } |
| 6091 | |
| 6092 | case 63: |
| 6093 | if (ppc_process_record_op63 (gdbarch, regcache, addr, insn) != 0) |
| 6094 | return -1; |
| 6095 | break; |
| 6096 | |
| 6097 | default: |
| 6098 | UNKNOWN_OP: |
| 6099 | fprintf_unfiltered (gdb_stdlog, "Warning: Don't know how to record %08x " |
| 6100 | "at %s, %d.\n", insn, paddress (gdbarch, addr), op6); |
| 6101 | return -1; |
| 6102 | } |
| 6103 | |
| 6104 | if (record_full_arch_list_add_reg (regcache, PPC_PC_REGNUM)) |
| 6105 | return -1; |
| 6106 | if (record_full_arch_list_add_end ()) |
| 6107 | return -1; |
| 6108 | return 0; |
| 6109 | } |
| 6110 | |
| 6111 | /* Initialize the current architecture based on INFO. If possible, re-use an |
| 6112 | architecture from ARCHES, which is a list of architectures already created |
| 6113 | during this debugging session. |
| 6114 | |
| 6115 | Called e.g. at program startup, when reading a core file, and when reading |
| 6116 | a binary file. */ |
| 6117 | |
| 6118 | static struct gdbarch * |
| 6119 | rs6000_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches) |
| 6120 | { |
| 6121 | struct gdbarch *gdbarch; |
| 6122 | struct gdbarch_tdep *tdep; |
| 6123 | int wordsize, from_xcoff_exec, from_elf_exec; |
| 6124 | enum bfd_architecture arch; |
| 6125 | unsigned long mach; |
| 6126 | bfd abfd; |
| 6127 | enum auto_boolean soft_float_flag = powerpc_soft_float_global; |
| 6128 | int soft_float; |
| 6129 | enum powerpc_long_double_abi long_double_abi = POWERPC_LONG_DOUBLE_AUTO; |
| 6130 | enum powerpc_vector_abi vector_abi = powerpc_vector_abi_global; |
| 6131 | enum powerpc_elf_abi elf_abi = POWERPC_ELF_AUTO; |
| 6132 | int have_fpu = 0, have_spe = 0, have_mq = 0, have_altivec = 0; |
| 6133 | int have_dfp = 0, have_vsx = 0, have_ppr = 0, have_dscr = 0; |
| 6134 | int have_tar = 0, have_ebb = 0, have_pmu = 0, have_htm_spr = 0; |
| 6135 | int have_htm_core = 0, have_htm_fpu = 0, have_htm_altivec = 0; |
| 6136 | int have_htm_vsx = 0, have_htm_ppr = 0, have_htm_dscr = 0; |
| 6137 | int have_htm_tar = 0; |
| 6138 | int tdesc_wordsize = -1; |
| 6139 | const struct target_desc *tdesc = info.target_desc; |
| 6140 | struct tdesc_arch_data *tdesc_data = NULL; |
| 6141 | int num_pseudoregs = 0; |
| 6142 | int cur_reg; |
| 6143 | |
| 6144 | from_xcoff_exec = info.abfd && info.abfd->format == bfd_object && |
| 6145 | bfd_get_flavour (info.abfd) == bfd_target_xcoff_flavour; |
| 6146 | |
| 6147 | from_elf_exec = info.abfd && info.abfd->format == bfd_object && |
| 6148 | bfd_get_flavour (info.abfd) == bfd_target_elf_flavour; |
| 6149 | |
| 6150 | /* Check word size. If INFO is from a binary file, infer it from |
| 6151 | that, else choose a likely default. */ |
| 6152 | if (from_xcoff_exec) |
| 6153 | { |
| 6154 | if (bfd_xcoff_is_xcoff64 (info.abfd)) |
| 6155 | wordsize = 8; |
| 6156 | else |
| 6157 | wordsize = 4; |
| 6158 | } |
| 6159 | else if (from_elf_exec) |
| 6160 | { |
| 6161 | if (elf_elfheader (info.abfd)->e_ident[EI_CLASS] == ELFCLASS64) |
| 6162 | wordsize = 8; |
| 6163 | else |
| 6164 | wordsize = 4; |
| 6165 | } |
| 6166 | else if (tdesc_has_registers (tdesc)) |
| 6167 | wordsize = -1; |
| 6168 | else |
| 6169 | { |
| 6170 | if (info.bfd_arch_info != NULL && info.bfd_arch_info->bits_per_word != 0) |
| 6171 | wordsize = (info.bfd_arch_info->bits_per_word |
| 6172 | / info.bfd_arch_info->bits_per_byte); |
| 6173 | else |
| 6174 | wordsize = 4; |
| 6175 | } |
| 6176 | |
| 6177 | /* Get the architecture and machine from the BFD. */ |
| 6178 | arch = info.bfd_arch_info->arch; |
| 6179 | mach = info.bfd_arch_info->mach; |
| 6180 | |
| 6181 | /* For e500 executables, the apuinfo section is of help here. Such |
| 6182 | section contains the identifier and revision number of each |
| 6183 | Application-specific Processing Unit that is present on the |
| 6184 | chip. The content of the section is determined by the assembler |
| 6185 | which looks at each instruction and determines which unit (and |
| 6186 | which version of it) can execute it. Grovel through the section |
| 6187 | looking for relevant e500 APUs. */ |
| 6188 | |
| 6189 | if (bfd_uses_spe_extensions (info.abfd)) |
| 6190 | { |
| 6191 | arch = info.bfd_arch_info->arch; |
| 6192 | mach = bfd_mach_ppc_e500; |
| 6193 | bfd_default_set_arch_mach (&abfd, arch, mach); |
| 6194 | info.bfd_arch_info = bfd_get_arch_info (&abfd); |
| 6195 | } |
| 6196 | |
| 6197 | /* Find a default target description which describes our register |
| 6198 | layout, if we do not already have one. */ |
| 6199 | if (! tdesc_has_registers (tdesc)) |
| 6200 | { |
| 6201 | const struct variant *v; |
| 6202 | |
| 6203 | /* Choose variant. */ |
| 6204 | v = find_variant_by_arch (arch, mach); |
| 6205 | if (!v) |
| 6206 | return NULL; |
| 6207 | |
| 6208 | tdesc = *v->tdesc; |
| 6209 | } |
| 6210 | |
| 6211 | gdb_assert (tdesc_has_registers (tdesc)); |
| 6212 | |
| 6213 | /* Check any target description for validity. */ |
| 6214 | if (tdesc_has_registers (tdesc)) |
| 6215 | { |
| 6216 | static const char *const gprs[] = { |
| 6217 | "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", |
| 6218 | "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 6219 | "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", |
| 6220 | "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31" |
| 6221 | }; |
| 6222 | const struct tdesc_feature *feature; |
| 6223 | int i, valid_p; |
| 6224 | static const char *const msr_names[] = { "msr", "ps" }; |
| 6225 | static const char *const cr_names[] = { "cr", "cnd" }; |
| 6226 | static const char *const ctr_names[] = { "ctr", "cnt" }; |
| 6227 | |
| 6228 | feature = tdesc_find_feature (tdesc, |
| 6229 | "org.gnu.gdb.power.core"); |
| 6230 | if (feature == NULL) |
| 6231 | return NULL; |
| 6232 | |
| 6233 | tdesc_data = tdesc_data_alloc (); |
| 6234 | |
| 6235 | valid_p = 1; |
| 6236 | for (i = 0; i < ppc_num_gprs; i++) |
| 6237 | valid_p &= tdesc_numbered_register (feature, tdesc_data, i, gprs[i]); |
| 6238 | valid_p &= tdesc_numbered_register (feature, tdesc_data, PPC_PC_REGNUM, |
| 6239 | "pc"); |
| 6240 | valid_p &= tdesc_numbered_register (feature, tdesc_data, PPC_LR_REGNUM, |
| 6241 | "lr"); |
| 6242 | valid_p &= tdesc_numbered_register (feature, tdesc_data, PPC_XER_REGNUM, |
| 6243 | "xer"); |
| 6244 | |
| 6245 | /* Allow alternate names for these registers, to accomodate GDB's |
| 6246 | historic naming. */ |
| 6247 | valid_p &= tdesc_numbered_register_choices (feature, tdesc_data, |
| 6248 | PPC_MSR_REGNUM, msr_names); |
| 6249 | valid_p &= tdesc_numbered_register_choices (feature, tdesc_data, |
| 6250 | PPC_CR_REGNUM, cr_names); |
| 6251 | valid_p &= tdesc_numbered_register_choices (feature, tdesc_data, |
| 6252 | PPC_CTR_REGNUM, ctr_names); |
| 6253 | |
| 6254 | if (!valid_p) |
| 6255 | { |
| 6256 | tdesc_data_cleanup (tdesc_data); |
| 6257 | return NULL; |
| 6258 | } |
| 6259 | |
| 6260 | have_mq = tdesc_numbered_register (feature, tdesc_data, PPC_MQ_REGNUM, |
| 6261 | "mq"); |
| 6262 | |
| 6263 | tdesc_wordsize = tdesc_register_bitsize (feature, "pc") / 8; |
| 6264 | if (wordsize == -1) |
| 6265 | wordsize = tdesc_wordsize; |
| 6266 | |
| 6267 | feature = tdesc_find_feature (tdesc, |
| 6268 | "org.gnu.gdb.power.fpu"); |
| 6269 | if (feature != NULL) |
| 6270 | { |
| 6271 | static const char *const fprs[] = { |
| 6272 | "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", |
| 6273 | "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", |
| 6274 | "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", |
| 6275 | "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31" |
| 6276 | }; |
| 6277 | valid_p = 1; |
| 6278 | for (i = 0; i < ppc_num_fprs; i++) |
| 6279 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6280 | PPC_F0_REGNUM + i, fprs[i]); |
| 6281 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6282 | PPC_FPSCR_REGNUM, "fpscr"); |
| 6283 | |
| 6284 | if (!valid_p) |
| 6285 | { |
| 6286 | tdesc_data_cleanup (tdesc_data); |
| 6287 | return NULL; |
| 6288 | } |
| 6289 | have_fpu = 1; |
| 6290 | |
| 6291 | /* The fpscr register was expanded in isa 2.05 to 64 bits |
| 6292 | along with the addition of the decimal floating point |
| 6293 | facility. */ |
| 6294 | if (tdesc_register_bitsize (feature, "fpscr") > 32) |
| 6295 | have_dfp = 1; |
| 6296 | } |
| 6297 | else |
| 6298 | have_fpu = 0; |
| 6299 | |
| 6300 | feature = tdesc_find_feature (tdesc, |
| 6301 | "org.gnu.gdb.power.altivec"); |
| 6302 | if (feature != NULL) |
| 6303 | { |
| 6304 | static const char *const vector_regs[] = { |
| 6305 | "vr0", "vr1", "vr2", "vr3", "vr4", "vr5", "vr6", "vr7", |
| 6306 | "vr8", "vr9", "vr10", "vr11", "vr12", "vr13", "vr14", "vr15", |
| 6307 | "vr16", "vr17", "vr18", "vr19", "vr20", "vr21", "vr22", "vr23", |
| 6308 | "vr24", "vr25", "vr26", "vr27", "vr28", "vr29", "vr30", "vr31" |
| 6309 | }; |
| 6310 | |
| 6311 | valid_p = 1; |
| 6312 | for (i = 0; i < ppc_num_gprs; i++) |
| 6313 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6314 | PPC_VR0_REGNUM + i, |
| 6315 | vector_regs[i]); |
| 6316 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6317 | PPC_VSCR_REGNUM, "vscr"); |
| 6318 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6319 | PPC_VRSAVE_REGNUM, "vrsave"); |
| 6320 | |
| 6321 | if (have_spe || !valid_p) |
| 6322 | { |
| 6323 | tdesc_data_cleanup (tdesc_data); |
| 6324 | return NULL; |
| 6325 | } |
| 6326 | have_altivec = 1; |
| 6327 | } |
| 6328 | else |
| 6329 | have_altivec = 0; |
| 6330 | |
| 6331 | /* Check for POWER7 VSX registers support. */ |
| 6332 | feature = tdesc_find_feature (tdesc, |
| 6333 | "org.gnu.gdb.power.vsx"); |
| 6334 | |
| 6335 | if (feature != NULL) |
| 6336 | { |
| 6337 | static const char *const vsx_regs[] = { |
| 6338 | "vs0h", "vs1h", "vs2h", "vs3h", "vs4h", "vs5h", |
| 6339 | "vs6h", "vs7h", "vs8h", "vs9h", "vs10h", "vs11h", |
| 6340 | "vs12h", "vs13h", "vs14h", "vs15h", "vs16h", "vs17h", |
| 6341 | "vs18h", "vs19h", "vs20h", "vs21h", "vs22h", "vs23h", |
| 6342 | "vs24h", "vs25h", "vs26h", "vs27h", "vs28h", "vs29h", |
| 6343 | "vs30h", "vs31h" |
| 6344 | }; |
| 6345 | |
| 6346 | valid_p = 1; |
| 6347 | |
| 6348 | for (i = 0; i < ppc_num_vshrs; i++) |
| 6349 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6350 | PPC_VSR0_UPPER_REGNUM + i, |
| 6351 | vsx_regs[i]); |
| 6352 | |
| 6353 | if (!valid_p || !have_fpu || !have_altivec) |
| 6354 | { |
| 6355 | tdesc_data_cleanup (tdesc_data); |
| 6356 | return NULL; |
| 6357 | } |
| 6358 | |
| 6359 | have_vsx = 1; |
| 6360 | } |
| 6361 | else |
| 6362 | have_vsx = 0; |
| 6363 | |
| 6364 | /* On machines supporting the SPE APU, the general-purpose registers |
| 6365 | are 64 bits long. There are SIMD vector instructions to treat them |
| 6366 | as pairs of floats, but the rest of the instruction set treats them |
| 6367 | as 32-bit registers, and only operates on their lower halves. |
| 6368 | |
| 6369 | In the GDB regcache, we treat their high and low halves as separate |
| 6370 | registers. The low halves we present as the general-purpose |
| 6371 | registers, and then we have pseudo-registers that stitch together |
| 6372 | the upper and lower halves and present them as pseudo-registers. |
| 6373 | |
| 6374 | Thus, the target description is expected to supply the upper |
| 6375 | halves separately. */ |
| 6376 | |
| 6377 | feature = tdesc_find_feature (tdesc, |
| 6378 | "org.gnu.gdb.power.spe"); |
| 6379 | if (feature != NULL) |
| 6380 | { |
| 6381 | static const char *const upper_spe[] = { |
| 6382 | "ev0h", "ev1h", "ev2h", "ev3h", |
| 6383 | "ev4h", "ev5h", "ev6h", "ev7h", |
| 6384 | "ev8h", "ev9h", "ev10h", "ev11h", |
| 6385 | "ev12h", "ev13h", "ev14h", "ev15h", |
| 6386 | "ev16h", "ev17h", "ev18h", "ev19h", |
| 6387 | "ev20h", "ev21h", "ev22h", "ev23h", |
| 6388 | "ev24h", "ev25h", "ev26h", "ev27h", |
| 6389 | "ev28h", "ev29h", "ev30h", "ev31h" |
| 6390 | }; |
| 6391 | |
| 6392 | valid_p = 1; |
| 6393 | for (i = 0; i < ppc_num_gprs; i++) |
| 6394 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6395 | PPC_SPE_UPPER_GP0_REGNUM + i, |
| 6396 | upper_spe[i]); |
| 6397 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6398 | PPC_SPE_ACC_REGNUM, "acc"); |
| 6399 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6400 | PPC_SPE_FSCR_REGNUM, "spefscr"); |
| 6401 | |
| 6402 | if (have_mq || have_fpu || !valid_p) |
| 6403 | { |
| 6404 | tdesc_data_cleanup (tdesc_data); |
| 6405 | return NULL; |
| 6406 | } |
| 6407 | have_spe = 1; |
| 6408 | } |
| 6409 | else |
| 6410 | have_spe = 0; |
| 6411 | |
| 6412 | /* Program Priority Register. */ |
| 6413 | feature = tdesc_find_feature (tdesc, |
| 6414 | "org.gnu.gdb.power.ppr"); |
| 6415 | if (feature != NULL) |
| 6416 | { |
| 6417 | valid_p = 1; |
| 6418 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6419 | PPC_PPR_REGNUM, "ppr"); |
| 6420 | |
| 6421 | if (!valid_p) |
| 6422 | { |
| 6423 | tdesc_data_cleanup (tdesc_data); |
| 6424 | return NULL; |
| 6425 | } |
| 6426 | have_ppr = 1; |
| 6427 | } |
| 6428 | else |
| 6429 | have_ppr = 0; |
| 6430 | |
| 6431 | /* Data Stream Control Register. */ |
| 6432 | feature = tdesc_find_feature (tdesc, |
| 6433 | "org.gnu.gdb.power.dscr"); |
| 6434 | if (feature != NULL) |
| 6435 | { |
| 6436 | valid_p = 1; |
| 6437 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6438 | PPC_DSCR_REGNUM, "dscr"); |
| 6439 | |
| 6440 | if (!valid_p) |
| 6441 | { |
| 6442 | tdesc_data_cleanup (tdesc_data); |
| 6443 | return NULL; |
| 6444 | } |
| 6445 | have_dscr = 1; |
| 6446 | } |
| 6447 | else |
| 6448 | have_dscr = 0; |
| 6449 | |
| 6450 | /* Target Address Register. */ |
| 6451 | feature = tdesc_find_feature (tdesc, |
| 6452 | "org.gnu.gdb.power.tar"); |
| 6453 | if (feature != NULL) |
| 6454 | { |
| 6455 | valid_p = 1; |
| 6456 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6457 | PPC_TAR_REGNUM, "tar"); |
| 6458 | |
| 6459 | if (!valid_p) |
| 6460 | { |
| 6461 | tdesc_data_cleanup (tdesc_data); |
| 6462 | return NULL; |
| 6463 | } |
| 6464 | have_tar = 1; |
| 6465 | } |
| 6466 | else |
| 6467 | have_tar = 0; |
| 6468 | |
| 6469 | /* Event-based Branching Registers. */ |
| 6470 | feature = tdesc_find_feature (tdesc, |
| 6471 | "org.gnu.gdb.power.ebb"); |
| 6472 | if (feature != NULL) |
| 6473 | { |
| 6474 | static const char *const ebb_regs[] = { |
| 6475 | "bescr", "ebbhr", "ebbrr" |
| 6476 | }; |
| 6477 | |
| 6478 | valid_p = 1; |
| 6479 | for (i = 0; i < ARRAY_SIZE (ebb_regs); i++) |
| 6480 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6481 | PPC_BESCR_REGNUM + i, |
| 6482 | ebb_regs[i]); |
| 6483 | if (!valid_p) |
| 6484 | { |
| 6485 | tdesc_data_cleanup (tdesc_data); |
| 6486 | return NULL; |
| 6487 | } |
| 6488 | have_ebb = 1; |
| 6489 | } |
| 6490 | else |
| 6491 | have_ebb = 0; |
| 6492 | |
| 6493 | /* Subset of the ISA 2.07 Performance Monitor Registers provided |
| 6494 | by Linux. */ |
| 6495 | feature = tdesc_find_feature (tdesc, |
| 6496 | "org.gnu.gdb.power.linux.pmu"); |
| 6497 | if (feature != NULL) |
| 6498 | { |
| 6499 | valid_p = 1; |
| 6500 | |
| 6501 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6502 | PPC_MMCR0_REGNUM, |
| 6503 | "mmcr0"); |
| 6504 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6505 | PPC_MMCR2_REGNUM, |
| 6506 | "mmcr2"); |
| 6507 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6508 | PPC_SIAR_REGNUM, |
| 6509 | "siar"); |
| 6510 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6511 | PPC_SDAR_REGNUM, |
| 6512 | "sdar"); |
| 6513 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6514 | PPC_SIER_REGNUM, |
| 6515 | "sier"); |
| 6516 | |
| 6517 | if (!valid_p) |
| 6518 | { |
| 6519 | tdesc_data_cleanup (tdesc_data); |
| 6520 | return NULL; |
| 6521 | } |
| 6522 | have_pmu = 1; |
| 6523 | } |
| 6524 | else |
| 6525 | have_pmu = 0; |
| 6526 | |
| 6527 | /* Hardware Transactional Memory Registers. */ |
| 6528 | feature = tdesc_find_feature (tdesc, |
| 6529 | "org.gnu.gdb.power.htm.spr"); |
| 6530 | if (feature != NULL) |
| 6531 | { |
| 6532 | static const char *const tm_spr_regs[] = { |
| 6533 | "tfhar", "texasr", "tfiar" |
| 6534 | }; |
| 6535 | |
| 6536 | valid_p = 1; |
| 6537 | for (i = 0; i < ARRAY_SIZE (tm_spr_regs); i++) |
| 6538 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6539 | PPC_TFHAR_REGNUM + i, |
| 6540 | tm_spr_regs[i]); |
| 6541 | if (!valid_p) |
| 6542 | { |
| 6543 | tdesc_data_cleanup (tdesc_data); |
| 6544 | return NULL; |
| 6545 | } |
| 6546 | |
| 6547 | have_htm_spr = 1; |
| 6548 | } |
| 6549 | else |
| 6550 | have_htm_spr = 0; |
| 6551 | |
| 6552 | feature = tdesc_find_feature (tdesc, |
| 6553 | "org.gnu.gdb.power.htm.core"); |
| 6554 | if (feature != NULL) |
| 6555 | { |
| 6556 | static const char *const cgprs[] = { |
| 6557 | "cr0", "cr1", "cr2", "cr3", "cr4", "cr5", "cr6", "cr7", |
| 6558 | "cr8", "cr9", "cr10", "cr11", "cr12", "cr13", "cr14", |
| 6559 | "cr15", "cr16", "cr17", "cr18", "cr19", "cr20", "cr21", |
| 6560 | "cr22", "cr23", "cr24", "cr25", "cr26", "cr27", "cr28", |
| 6561 | "cr29", "cr30", "cr31", "ccr", "cxer", "clr", "cctr" |
| 6562 | }; |
| 6563 | |
| 6564 | valid_p = 1; |
| 6565 | |
| 6566 | for (i = 0; i < ARRAY_SIZE (cgprs); i++) |
| 6567 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6568 | PPC_CR0_REGNUM + i, |
| 6569 | cgprs[i]); |
| 6570 | if (!valid_p) |
| 6571 | { |
| 6572 | tdesc_data_cleanup (tdesc_data); |
| 6573 | return NULL; |
| 6574 | } |
| 6575 | |
| 6576 | have_htm_core = 1; |
| 6577 | } |
| 6578 | else |
| 6579 | have_htm_core = 0; |
| 6580 | |
| 6581 | feature = tdesc_find_feature (tdesc, |
| 6582 | "org.gnu.gdb.power.htm.fpu"); |
| 6583 | if (feature != NULL) |
| 6584 | { |
| 6585 | valid_p = 1; |
| 6586 | |
| 6587 | static const char *const cfprs[] = { |
| 6588 | "cf0", "cf1", "cf2", "cf3", "cf4", "cf5", "cf6", "cf7", |
| 6589 | "cf8", "cf9", "cf10", "cf11", "cf12", "cf13", "cf14", "cf15", |
| 6590 | "cf16", "cf17", "cf18", "cf19", "cf20", "cf21", "cf22", |
| 6591 | "cf23", "cf24", "cf25", "cf26", "cf27", "cf28", "cf29", |
| 6592 | "cf30", "cf31", "cfpscr" |
| 6593 | }; |
| 6594 | |
| 6595 | for (i = 0; i < ARRAY_SIZE (cfprs); i++) |
| 6596 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6597 | PPC_CF0_REGNUM + i, |
| 6598 | cfprs[i]); |
| 6599 | |
| 6600 | if (!valid_p) |
| 6601 | { |
| 6602 | tdesc_data_cleanup (tdesc_data); |
| 6603 | return NULL; |
| 6604 | } |
| 6605 | have_htm_fpu = 1; |
| 6606 | } |
| 6607 | else |
| 6608 | have_htm_fpu = 0; |
| 6609 | |
| 6610 | feature = tdesc_find_feature (tdesc, |
| 6611 | "org.gnu.gdb.power.htm.altivec"); |
| 6612 | if (feature != NULL) |
| 6613 | { |
| 6614 | valid_p = 1; |
| 6615 | |
| 6616 | static const char *const cvmx[] = { |
| 6617 | "cvr0", "cvr1", "cvr2", "cvr3", "cvr4", "cvr5", "cvr6", |
| 6618 | "cvr7", "cvr8", "cvr9", "cvr10", "cvr11", "cvr12", "cvr13", |
| 6619 | "cvr14", "cvr15","cvr16", "cvr17", "cvr18", "cvr19", "cvr20", |
| 6620 | "cvr21", "cvr22", "cvr23", "cvr24", "cvr25", "cvr26", |
| 6621 | "cvr27", "cvr28", "cvr29", "cvr30", "cvr31", "cvscr", |
| 6622 | "cvrsave" |
| 6623 | }; |
| 6624 | |
| 6625 | for (i = 0; i < ARRAY_SIZE (cvmx); i++) |
| 6626 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6627 | PPC_CVR0_REGNUM + i, |
| 6628 | cvmx[i]); |
| 6629 | |
| 6630 | if (!valid_p) |
| 6631 | { |
| 6632 | tdesc_data_cleanup (tdesc_data); |
| 6633 | return NULL; |
| 6634 | } |
| 6635 | have_htm_altivec = 1; |
| 6636 | } |
| 6637 | else |
| 6638 | have_htm_altivec = 0; |
| 6639 | |
| 6640 | feature = tdesc_find_feature (tdesc, |
| 6641 | "org.gnu.gdb.power.htm.vsx"); |
| 6642 | if (feature != NULL) |
| 6643 | { |
| 6644 | valid_p = 1; |
| 6645 | |
| 6646 | static const char *const cvsx[] = { |
| 6647 | "cvs0h", "cvs1h", "cvs2h", "cvs3h", "cvs4h", "cvs5h", |
| 6648 | "cvs6h", "cvs7h", "cvs8h", "cvs9h", "cvs10h", "cvs11h", |
| 6649 | "cvs12h", "cvs13h", "cvs14h", "cvs15h", "cvs16h", "cvs17h", |
| 6650 | "cvs18h", "cvs19h", "cvs20h", "cvs21h", "cvs22h", "cvs23h", |
| 6651 | "cvs24h", "cvs25h", "cvs26h", "cvs27h", "cvs28h", "cvs29h", |
| 6652 | "cvs30h", "cvs31h" |
| 6653 | }; |
| 6654 | |
| 6655 | for (i = 0; i < ARRAY_SIZE (cvsx); i++) |
| 6656 | valid_p &= tdesc_numbered_register (feature, tdesc_data, |
| 6657 | (PPC_CVSR0_UPPER_REGNUM |
| 6658 | + i), |
| 6659 | cvsx[i]); |
| 6660 | |
| 6661 | if (!valid_p || !have_htm_fpu || !have_htm_altivec) |
| 6662 | { |
| 6663 | tdesc_data_cleanup (tdesc_data); |
| 6664 | return NULL; |
| 6665 | } |
| 6666 | have_htm_vsx = 1; |
| 6667 | } |
| 6668 | else |
| 6669 | have_htm_vsx = 0; |
| 6670 | |
| 6671 | feature = tdesc_find_feature (tdesc, |
| 6672 | "org.gnu.gdb.power.htm.ppr"); |
| 6673 | if (feature != NULL) |
| 6674 | { |
| 6675 | valid_p = tdesc_numbered_register (feature, tdesc_data, |
| 6676 | PPC_CPPR_REGNUM, "cppr"); |
| 6677 | |
| 6678 | if (!valid_p) |
| 6679 | { |
| 6680 | tdesc_data_cleanup (tdesc_data); |
| 6681 | return NULL; |
| 6682 | } |
| 6683 | have_htm_ppr = 1; |
| 6684 | } |
| 6685 | else |
| 6686 | have_htm_ppr = 0; |
| 6687 | |
| 6688 | feature = tdesc_find_feature (tdesc, |
| 6689 | "org.gnu.gdb.power.htm.dscr"); |
| 6690 | if (feature != NULL) |
| 6691 | { |
| 6692 | valid_p = tdesc_numbered_register (feature, tdesc_data, |
| 6693 | PPC_CDSCR_REGNUM, "cdscr"); |
| 6694 | |
| 6695 | if (!valid_p) |
| 6696 | { |
| 6697 | tdesc_data_cleanup (tdesc_data); |
| 6698 | return NULL; |
| 6699 | } |
| 6700 | have_htm_dscr = 1; |
| 6701 | } |
| 6702 | else |
| 6703 | have_htm_dscr = 0; |
| 6704 | |
| 6705 | feature = tdesc_find_feature (tdesc, |
| 6706 | "org.gnu.gdb.power.htm.tar"); |
| 6707 | if (feature != NULL) |
| 6708 | { |
| 6709 | valid_p = tdesc_numbered_register (feature, tdesc_data, |
| 6710 | PPC_CTAR_REGNUM, "ctar"); |
| 6711 | |
| 6712 | if (!valid_p) |
| 6713 | { |
| 6714 | tdesc_data_cleanup (tdesc_data); |
| 6715 | return NULL; |
| 6716 | } |
| 6717 | have_htm_tar = 1; |
| 6718 | } |
| 6719 | else |
| 6720 | have_htm_tar = 0; |
| 6721 | } |
| 6722 | |
| 6723 | /* If we have a 64-bit binary on a 32-bit target, complain. Also |
| 6724 | complain for a 32-bit binary on a 64-bit target; we do not yet |
| 6725 | support that. For instance, the 32-bit ABI routines expect |
| 6726 | 32-bit GPRs. |
| 6727 | |
| 6728 | As long as there isn't an explicit target description, we'll |
| 6729 | choose one based on the BFD architecture and get a word size |
| 6730 | matching the binary (probably powerpc:common or |
| 6731 | powerpc:common64). So there is only trouble if a 64-bit target |
| 6732 | supplies a 64-bit description while debugging a 32-bit |
| 6733 | binary. */ |
| 6734 | if (tdesc_wordsize != -1 && tdesc_wordsize != wordsize) |
| 6735 | { |
| 6736 | tdesc_data_cleanup (tdesc_data); |
| 6737 | return NULL; |
| 6738 | } |
| 6739 | |
| 6740 | #ifdef HAVE_ELF |
| 6741 | if (from_elf_exec) |
| 6742 | { |
| 6743 | switch (elf_elfheader (info.abfd)->e_flags & EF_PPC64_ABI) |
| 6744 | { |
| 6745 | case 1: |
| 6746 | elf_abi = POWERPC_ELF_V1; |
| 6747 | break; |
| 6748 | case 2: |
| 6749 | elf_abi = POWERPC_ELF_V2; |
| 6750 | break; |
| 6751 | default: |
| 6752 | break; |
| 6753 | } |
| 6754 | } |
| 6755 | |
| 6756 | if (soft_float_flag == AUTO_BOOLEAN_AUTO && from_elf_exec) |
| 6757 | { |
| 6758 | switch (bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_GNU, |
| 6759 | Tag_GNU_Power_ABI_FP) & 3) |
| 6760 | { |
| 6761 | case 1: |
| 6762 | soft_float_flag = AUTO_BOOLEAN_FALSE; |
| 6763 | break; |
| 6764 | case 2: |
| 6765 | soft_float_flag = AUTO_BOOLEAN_TRUE; |
| 6766 | break; |
| 6767 | default: |
| 6768 | break; |
| 6769 | } |
| 6770 | } |
| 6771 | |
| 6772 | if (long_double_abi == POWERPC_LONG_DOUBLE_AUTO && from_elf_exec) |
| 6773 | { |
| 6774 | switch (bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_GNU, |
| 6775 | Tag_GNU_Power_ABI_FP) >> 2) |
| 6776 | { |
| 6777 | case 1: |
| 6778 | long_double_abi = POWERPC_LONG_DOUBLE_IBM128; |
| 6779 | break; |
| 6780 | case 3: |
| 6781 | long_double_abi = POWERPC_LONG_DOUBLE_IEEE128; |
| 6782 | break; |
| 6783 | default: |
| 6784 | break; |
| 6785 | } |
| 6786 | } |
| 6787 | |
| 6788 | if (vector_abi == POWERPC_VEC_AUTO && from_elf_exec) |
| 6789 | { |
| 6790 | switch (bfd_elf_get_obj_attr_int (info.abfd, OBJ_ATTR_GNU, |
| 6791 | Tag_GNU_Power_ABI_Vector)) |
| 6792 | { |
| 6793 | case 1: |
| 6794 | vector_abi = POWERPC_VEC_GENERIC; |
| 6795 | break; |
| 6796 | case 2: |
| 6797 | vector_abi = POWERPC_VEC_ALTIVEC; |
| 6798 | break; |
| 6799 | case 3: |
| 6800 | vector_abi = POWERPC_VEC_SPE; |
| 6801 | break; |
| 6802 | default: |
| 6803 | break; |
| 6804 | } |
| 6805 | } |
| 6806 | #endif |
| 6807 | |
| 6808 | /* At this point, the only supported ELF-based 64-bit little-endian |
| 6809 | operating system is GNU/Linux, and this uses the ELFv2 ABI by |
| 6810 | default. All other supported ELF-based operating systems use the |
| 6811 | ELFv1 ABI by default. Therefore, if the ABI marker is missing, |
| 6812 | e.g. because we run a legacy binary, or have attached to a process |
| 6813 | and have not found any associated binary file, set the default |
| 6814 | according to this heuristic. */ |
| 6815 | if (elf_abi == POWERPC_ELF_AUTO) |
| 6816 | { |
| 6817 | if (wordsize == 8 && info.byte_order == BFD_ENDIAN_LITTLE) |
| 6818 | elf_abi = POWERPC_ELF_V2; |
| 6819 | else |
| 6820 | elf_abi = POWERPC_ELF_V1; |
| 6821 | } |
| 6822 | |
| 6823 | if (soft_float_flag == AUTO_BOOLEAN_TRUE) |
| 6824 | soft_float = 1; |
| 6825 | else if (soft_float_flag == AUTO_BOOLEAN_FALSE) |
| 6826 | soft_float = 0; |
| 6827 | else |
| 6828 | soft_float = !have_fpu; |
| 6829 | |
| 6830 | /* If we have a hard float binary or setting but no floating point |
| 6831 | registers, downgrade to soft float anyway. We're still somewhat |
| 6832 | useful in this scenario. */ |
| 6833 | if (!soft_float && !have_fpu) |
| 6834 | soft_float = 1; |
| 6835 | |
| 6836 | /* Similarly for vector registers. */ |
| 6837 | if (vector_abi == POWERPC_VEC_ALTIVEC && !have_altivec) |
| 6838 | vector_abi = POWERPC_VEC_GENERIC; |
| 6839 | |
| 6840 | if (vector_abi == POWERPC_VEC_SPE && !have_spe) |
| 6841 | vector_abi = POWERPC_VEC_GENERIC; |
| 6842 | |
| 6843 | if (vector_abi == POWERPC_VEC_AUTO) |
| 6844 | { |
| 6845 | if (have_altivec) |
| 6846 | vector_abi = POWERPC_VEC_ALTIVEC; |
| 6847 | else if (have_spe) |
| 6848 | vector_abi = POWERPC_VEC_SPE; |
| 6849 | else |
| 6850 | vector_abi = POWERPC_VEC_GENERIC; |
| 6851 | } |
| 6852 | |
| 6853 | /* Do not limit the vector ABI based on available hardware, since we |
| 6854 | do not yet know what hardware we'll decide we have. Yuck! FIXME! */ |
| 6855 | |
| 6856 | /* Find a candidate among extant architectures. */ |
| 6857 | for (arches = gdbarch_list_lookup_by_info (arches, &info); |
| 6858 | arches != NULL; |
| 6859 | arches = gdbarch_list_lookup_by_info (arches->next, &info)) |
| 6860 | { |
| 6861 | /* Word size in the various PowerPC bfd_arch_info structs isn't |
| 6862 | meaningful, because 64-bit CPUs can run in 32-bit mode. So, perform |
| 6863 | separate word size check. */ |
| 6864 | tdep = gdbarch_tdep (arches->gdbarch); |
| 6865 | if (tdep && tdep->elf_abi != elf_abi) |
| 6866 | continue; |
| 6867 | if (tdep && tdep->soft_float != soft_float) |
| 6868 | continue; |
| 6869 | if (tdep && tdep->long_double_abi != long_double_abi) |
| 6870 | continue; |
| 6871 | if (tdep && tdep->vector_abi != vector_abi) |
| 6872 | continue; |
| 6873 | if (tdep && tdep->wordsize == wordsize) |
| 6874 | { |
| 6875 | if (tdesc_data != NULL) |
| 6876 | tdesc_data_cleanup (tdesc_data); |
| 6877 | return arches->gdbarch; |
| 6878 | } |
| 6879 | } |
| 6880 | |
| 6881 | /* None found, create a new architecture from INFO, whose bfd_arch_info |
| 6882 | validity depends on the source: |
| 6883 | - executable useless |
| 6884 | - rs6000_host_arch() good |
| 6885 | - core file good |
| 6886 | - "set arch" trust blindly |
| 6887 | - GDB startup useless but harmless */ |
| 6888 | |
| 6889 | tdep = XCNEW (struct gdbarch_tdep); |
| 6890 | tdep->wordsize = wordsize; |
| 6891 | tdep->elf_abi = elf_abi; |
| 6892 | tdep->soft_float = soft_float; |
| 6893 | tdep->long_double_abi = long_double_abi; |
| 6894 | tdep->vector_abi = vector_abi; |
| 6895 | |
| 6896 | gdbarch = gdbarch_alloc (&info, tdep); |
| 6897 | |
| 6898 | tdep->ppc_gp0_regnum = PPC_R0_REGNUM; |
| 6899 | tdep->ppc_toc_regnum = PPC_R0_REGNUM + 2; |
| 6900 | tdep->ppc_ps_regnum = PPC_MSR_REGNUM; |
| 6901 | tdep->ppc_cr_regnum = PPC_CR_REGNUM; |
| 6902 | tdep->ppc_lr_regnum = PPC_LR_REGNUM; |
| 6903 | tdep->ppc_ctr_regnum = PPC_CTR_REGNUM; |
| 6904 | tdep->ppc_xer_regnum = PPC_XER_REGNUM; |
| 6905 | tdep->ppc_mq_regnum = have_mq ? PPC_MQ_REGNUM : -1; |
| 6906 | |
| 6907 | tdep->ppc_fp0_regnum = have_fpu ? PPC_F0_REGNUM : -1; |
| 6908 | tdep->ppc_fpscr_regnum = have_fpu ? PPC_FPSCR_REGNUM : -1; |
| 6909 | tdep->ppc_vsr0_upper_regnum = have_vsx ? PPC_VSR0_UPPER_REGNUM : -1; |
| 6910 | tdep->ppc_vr0_regnum = have_altivec ? PPC_VR0_REGNUM : -1; |
| 6911 | tdep->ppc_vrsave_regnum = have_altivec ? PPC_VRSAVE_REGNUM : -1; |
| 6912 | tdep->ppc_ev0_upper_regnum = have_spe ? PPC_SPE_UPPER_GP0_REGNUM : -1; |
| 6913 | tdep->ppc_acc_regnum = have_spe ? PPC_SPE_ACC_REGNUM : -1; |
| 6914 | tdep->ppc_spefscr_regnum = have_spe ? PPC_SPE_FSCR_REGNUM : -1; |
| 6915 | tdep->ppc_ppr_regnum = have_ppr ? PPC_PPR_REGNUM : -1; |
| 6916 | tdep->ppc_dscr_regnum = have_dscr ? PPC_DSCR_REGNUM : -1; |
| 6917 | tdep->ppc_tar_regnum = have_tar ? PPC_TAR_REGNUM : -1; |
| 6918 | tdep->have_ebb = have_ebb; |
| 6919 | |
| 6920 | /* If additional pmu registers are added, care must be taken when |
| 6921 | setting new fields in the tdep below, to maintain compatibility |
| 6922 | with features that only provide some of the registers. Currently |
| 6923 | gdb access to the pmu registers is only supported in linux, and |
| 6924 | linux only provides a subset of the pmu registers defined in the |
| 6925 | architecture. */ |
| 6926 | |
| 6927 | tdep->ppc_mmcr0_regnum = have_pmu ? PPC_MMCR0_REGNUM : -1; |
| 6928 | tdep->ppc_mmcr2_regnum = have_pmu ? PPC_MMCR2_REGNUM : -1; |
| 6929 | tdep->ppc_siar_regnum = have_pmu ? PPC_SIAR_REGNUM : -1; |
| 6930 | tdep->ppc_sdar_regnum = have_pmu ? PPC_SDAR_REGNUM : -1; |
| 6931 | tdep->ppc_sier_regnum = have_pmu ? PPC_SIER_REGNUM : -1; |
| 6932 | |
| 6933 | tdep->have_htm_spr = have_htm_spr; |
| 6934 | tdep->have_htm_core = have_htm_core; |
| 6935 | tdep->have_htm_fpu = have_htm_fpu; |
| 6936 | tdep->have_htm_altivec = have_htm_altivec; |
| 6937 | tdep->have_htm_vsx = have_htm_vsx; |
| 6938 | tdep->ppc_cppr_regnum = have_htm_ppr ? PPC_CPPR_REGNUM : -1; |
| 6939 | tdep->ppc_cdscr_regnum = have_htm_dscr ? PPC_CDSCR_REGNUM : -1; |
| 6940 | tdep->ppc_ctar_regnum = have_htm_tar ? PPC_CTAR_REGNUM : -1; |
| 6941 | |
| 6942 | set_gdbarch_pc_regnum (gdbarch, PPC_PC_REGNUM); |
| 6943 | set_gdbarch_sp_regnum (gdbarch, PPC_R0_REGNUM + 1); |
| 6944 | set_gdbarch_fp0_regnum (gdbarch, tdep->ppc_fp0_regnum); |
| 6945 | set_gdbarch_register_sim_regno (gdbarch, rs6000_register_sim_regno); |
| 6946 | |
| 6947 | /* The XML specification for PowerPC sensibly calls the MSR "msr". |
| 6948 | GDB traditionally called it "ps", though, so let GDB add an |
| 6949 | alias. */ |
| 6950 | set_gdbarch_ps_regnum (gdbarch, tdep->ppc_ps_regnum); |
| 6951 | |
| 6952 | if (wordsize == 8) |
| 6953 | set_gdbarch_return_value (gdbarch, ppc64_sysv_abi_return_value); |
| 6954 | else |
| 6955 | set_gdbarch_return_value (gdbarch, ppc_sysv_abi_return_value); |
| 6956 | |
| 6957 | /* Set lr_frame_offset. */ |
| 6958 | if (wordsize == 8) |
| 6959 | tdep->lr_frame_offset = 16; |
| 6960 | else |
| 6961 | tdep->lr_frame_offset = 4; |
| 6962 | |
| 6963 | if (have_spe || have_dfp || have_altivec |
| 6964 | || have_vsx || have_htm_fpu || have_htm_vsx) |
| 6965 | { |
| 6966 | set_gdbarch_pseudo_register_read (gdbarch, rs6000_pseudo_register_read); |
| 6967 | set_gdbarch_pseudo_register_write (gdbarch, |
| 6968 | rs6000_pseudo_register_write); |
| 6969 | set_gdbarch_ax_pseudo_register_collect (gdbarch, |
| 6970 | rs6000_ax_pseudo_register_collect); |
| 6971 | } |
| 6972 | |
| 6973 | set_gdbarch_gen_return_address (gdbarch, rs6000_gen_return_address); |
| 6974 | |
| 6975 | set_gdbarch_have_nonsteppable_watchpoint (gdbarch, 1); |
| 6976 | |
| 6977 | set_gdbarch_num_regs (gdbarch, PPC_NUM_REGS); |
| 6978 | |
| 6979 | if (have_spe) |
| 6980 | num_pseudoregs += 32; |
| 6981 | if (have_dfp) |
| 6982 | num_pseudoregs += 16; |
| 6983 | if (have_altivec) |
| 6984 | num_pseudoregs += 32; |
| 6985 | if (have_vsx) |
| 6986 | /* Include both VSX and Extended FP registers. */ |
| 6987 | num_pseudoregs += 96; |
| 6988 | if (have_htm_fpu) |
| 6989 | num_pseudoregs += 16; |
| 6990 | /* Include both checkpointed VSX and EFP registers. */ |
| 6991 | if (have_htm_vsx) |
| 6992 | num_pseudoregs += 64 + 32; |
| 6993 | |
| 6994 | set_gdbarch_num_pseudo_regs (gdbarch, num_pseudoregs); |
| 6995 | |
| 6996 | set_gdbarch_ptr_bit (gdbarch, wordsize * TARGET_CHAR_BIT); |
| 6997 | set_gdbarch_short_bit (gdbarch, 2 * TARGET_CHAR_BIT); |
| 6998 | set_gdbarch_int_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 6999 | set_gdbarch_long_bit (gdbarch, wordsize * TARGET_CHAR_BIT); |
| 7000 | set_gdbarch_long_long_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 7001 | set_gdbarch_float_bit (gdbarch, 4 * TARGET_CHAR_BIT); |
| 7002 | set_gdbarch_double_bit (gdbarch, 8 * TARGET_CHAR_BIT); |
| 7003 | set_gdbarch_long_double_bit (gdbarch, 16 * TARGET_CHAR_BIT); |
| 7004 | set_gdbarch_char_signed (gdbarch, 0); |
| 7005 | |
| 7006 | set_gdbarch_frame_align (gdbarch, rs6000_frame_align); |
| 7007 | if (wordsize == 8) |
| 7008 | /* PPC64 SYSV. */ |
| 7009 | set_gdbarch_frame_red_zone_size (gdbarch, 288); |
| 7010 | |
| 7011 | set_gdbarch_convert_register_p (gdbarch, rs6000_convert_register_p); |
| 7012 | set_gdbarch_register_to_value (gdbarch, rs6000_register_to_value); |
| 7013 | set_gdbarch_value_to_register (gdbarch, rs6000_value_to_register); |
| 7014 | |
| 7015 | set_gdbarch_stab_reg_to_regnum (gdbarch, rs6000_stab_reg_to_regnum); |
| 7016 | set_gdbarch_dwarf2_reg_to_regnum (gdbarch, rs6000_dwarf2_reg_to_regnum); |
| 7017 | |
| 7018 | if (wordsize == 4) |
| 7019 | set_gdbarch_push_dummy_call (gdbarch, ppc_sysv_abi_push_dummy_call); |
| 7020 | else if (wordsize == 8) |
| 7021 | set_gdbarch_push_dummy_call (gdbarch, ppc64_sysv_abi_push_dummy_call); |
| 7022 | |
| 7023 | set_gdbarch_skip_prologue (gdbarch, rs6000_skip_prologue); |
| 7024 | set_gdbarch_stack_frame_destroyed_p (gdbarch, rs6000_stack_frame_destroyed_p); |
| 7025 | set_gdbarch_skip_main_prologue (gdbarch, rs6000_skip_main_prologue); |
| 7026 | |
| 7027 | set_gdbarch_inner_than (gdbarch, core_addr_lessthan); |
| 7028 | |
| 7029 | set_gdbarch_breakpoint_kind_from_pc (gdbarch, |
| 7030 | rs6000_breakpoint::kind_from_pc); |
| 7031 | set_gdbarch_sw_breakpoint_from_kind (gdbarch, |
| 7032 | rs6000_breakpoint::bp_from_kind); |
| 7033 | |
| 7034 | /* The value of symbols of type N_SO and N_FUN maybe null when |
| 7035 | it shouldn't be. */ |
| 7036 | set_gdbarch_sofun_address_maybe_missing (gdbarch, 1); |
| 7037 | |
| 7038 | /* Handles single stepping of atomic sequences. */ |
| 7039 | set_gdbarch_software_single_step (gdbarch, ppc_deal_with_atomic_sequence); |
| 7040 | |
| 7041 | /* Not sure on this. FIXMEmgo */ |
| 7042 | set_gdbarch_frame_args_skip (gdbarch, 8); |
| 7043 | |
| 7044 | /* Helpers for function argument information. */ |
| 7045 | set_gdbarch_fetch_pointer_argument (gdbarch, rs6000_fetch_pointer_argument); |
| 7046 | |
| 7047 | /* Trampoline. */ |
| 7048 | set_gdbarch_in_solib_return_trampoline |
| 7049 | (gdbarch, rs6000_in_solib_return_trampoline); |
| 7050 | set_gdbarch_skip_trampoline_code (gdbarch, rs6000_skip_trampoline_code); |
| 7051 | |
| 7052 | /* Hook in the DWARF CFI frame unwinder. */ |
| 7053 | dwarf2_append_unwinders (gdbarch); |
| 7054 | dwarf2_frame_set_adjust_regnum (gdbarch, rs6000_adjust_frame_regnum); |
| 7055 | |
| 7056 | /* Frame handling. */ |
| 7057 | dwarf2_frame_set_init_reg (gdbarch, ppc_dwarf2_frame_init_reg); |
| 7058 | |
| 7059 | /* Setup displaced stepping. */ |
| 7060 | set_gdbarch_displaced_step_copy_insn (gdbarch, |
| 7061 | ppc_displaced_step_copy_insn); |
| 7062 | set_gdbarch_displaced_step_hw_singlestep (gdbarch, |
| 7063 | ppc_displaced_step_hw_singlestep); |
| 7064 | set_gdbarch_displaced_step_fixup (gdbarch, ppc_displaced_step_fixup); |
| 7065 | set_gdbarch_displaced_step_location (gdbarch, |
| 7066 | displaced_step_at_entry_point); |
| 7067 | |
| 7068 | set_gdbarch_max_insn_length (gdbarch, PPC_INSN_SIZE); |
| 7069 | |
| 7070 | /* Hook in ABI-specific overrides, if they have been registered. */ |
| 7071 | info.target_desc = tdesc; |
| 7072 | info.tdesc_data = tdesc_data; |
| 7073 | gdbarch_init_osabi (info, gdbarch); |
| 7074 | |
| 7075 | switch (info.osabi) |
| 7076 | { |
| 7077 | case GDB_OSABI_LINUX: |
| 7078 | case GDB_OSABI_NETBSD: |
| 7079 | case GDB_OSABI_UNKNOWN: |
| 7080 | frame_unwind_append_unwinder (gdbarch, &rs6000_epilogue_frame_unwind); |
| 7081 | frame_unwind_append_unwinder (gdbarch, &rs6000_frame_unwind); |
| 7082 | frame_base_append_sniffer (gdbarch, rs6000_frame_base_sniffer); |
| 7083 | break; |
| 7084 | default: |
| 7085 | set_gdbarch_believe_pcc_promotion (gdbarch, 1); |
| 7086 | |
| 7087 | frame_unwind_append_unwinder (gdbarch, &rs6000_epilogue_frame_unwind); |
| 7088 | frame_unwind_append_unwinder (gdbarch, &rs6000_frame_unwind); |
| 7089 | frame_base_append_sniffer (gdbarch, rs6000_frame_base_sniffer); |
| 7090 | } |
| 7091 | |
| 7092 | set_tdesc_pseudo_register_type (gdbarch, rs6000_pseudo_register_type); |
| 7093 | set_tdesc_pseudo_register_reggroup_p (gdbarch, |
| 7094 | rs6000_pseudo_register_reggroup_p); |
| 7095 | tdesc_use_registers (gdbarch, tdesc, tdesc_data); |
| 7096 | |
| 7097 | /* Override the normal target description method to make the SPE upper |
| 7098 | halves anonymous. */ |
| 7099 | set_gdbarch_register_name (gdbarch, rs6000_register_name); |
| 7100 | |
| 7101 | /* Choose register numbers for all supported pseudo-registers. */ |
| 7102 | tdep->ppc_ev0_regnum = -1; |
| 7103 | tdep->ppc_dl0_regnum = -1; |
| 7104 | tdep->ppc_v0_alias_regnum = -1; |
| 7105 | tdep->ppc_vsr0_regnum = -1; |
| 7106 | tdep->ppc_efpr0_regnum = -1; |
| 7107 | tdep->ppc_cdl0_regnum = -1; |
| 7108 | tdep->ppc_cvsr0_regnum = -1; |
| 7109 | tdep->ppc_cefpr0_regnum = -1; |
| 7110 | |
| 7111 | cur_reg = gdbarch_num_regs (gdbarch); |
| 7112 | |
| 7113 | if (have_spe) |
| 7114 | { |
| 7115 | tdep->ppc_ev0_regnum = cur_reg; |
| 7116 | cur_reg += 32; |
| 7117 | } |
| 7118 | if (have_dfp) |
| 7119 | { |
| 7120 | tdep->ppc_dl0_regnum = cur_reg; |
| 7121 | cur_reg += 16; |
| 7122 | } |
| 7123 | if (have_altivec) |
| 7124 | { |
| 7125 | tdep->ppc_v0_alias_regnum = cur_reg; |
| 7126 | cur_reg += 32; |
| 7127 | } |
| 7128 | if (have_vsx) |
| 7129 | { |
| 7130 | tdep->ppc_vsr0_regnum = cur_reg; |
| 7131 | cur_reg += 64; |
| 7132 | tdep->ppc_efpr0_regnum = cur_reg; |
| 7133 | cur_reg += 32; |
| 7134 | } |
| 7135 | if (have_htm_fpu) |
| 7136 | { |
| 7137 | tdep->ppc_cdl0_regnum = cur_reg; |
| 7138 | cur_reg += 16; |
| 7139 | } |
| 7140 | if (have_htm_vsx) |
| 7141 | { |
| 7142 | tdep->ppc_cvsr0_regnum = cur_reg; |
| 7143 | cur_reg += 64; |
| 7144 | tdep->ppc_cefpr0_regnum = cur_reg; |
| 7145 | cur_reg += 32; |
| 7146 | } |
| 7147 | |
| 7148 | gdb_assert (gdbarch_num_cooked_regs (gdbarch) == cur_reg); |
| 7149 | |
| 7150 | /* Register the ravenscar_arch_ops. */ |
| 7151 | if (mach == bfd_mach_ppc_e500) |
| 7152 | register_e500_ravenscar_ops (gdbarch); |
| 7153 | else |
| 7154 | register_ppc_ravenscar_ops (gdbarch); |
| 7155 | |
| 7156 | set_gdbarch_disassembler_options (gdbarch, &powerpc_disassembler_options); |
| 7157 | set_gdbarch_valid_disassembler_options (gdbarch, |
| 7158 | disassembler_options_powerpc ()); |
| 7159 | |
| 7160 | return gdbarch; |
| 7161 | } |
| 7162 | |
| 7163 | static void |
| 7164 | rs6000_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file) |
| 7165 | { |
| 7166 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 7167 | |
| 7168 | if (tdep == NULL) |
| 7169 | return; |
| 7170 | |
| 7171 | /* FIXME: Dump gdbarch_tdep. */ |
| 7172 | } |
| 7173 | |
| 7174 | /* PowerPC-specific commands. */ |
| 7175 | |
| 7176 | static void |
| 7177 | set_powerpc_command (const char *args, int from_tty) |
| 7178 | { |
| 7179 | printf_unfiltered (_("\ |
| 7180 | \"set powerpc\" must be followed by an appropriate subcommand.\n")); |
| 7181 | help_list (setpowerpccmdlist, "set powerpc ", all_commands, gdb_stdout); |
| 7182 | } |
| 7183 | |
| 7184 | static void |
| 7185 | show_powerpc_command (const char *args, int from_tty) |
| 7186 | { |
| 7187 | cmd_show_list (showpowerpccmdlist, from_tty, ""); |
| 7188 | } |
| 7189 | |
| 7190 | static void |
| 7191 | powerpc_set_soft_float (const char *args, int from_tty, |
| 7192 | struct cmd_list_element *c) |
| 7193 | { |
| 7194 | struct gdbarch_info info; |
| 7195 | |
| 7196 | /* Update the architecture. */ |
| 7197 | gdbarch_info_init (&info); |
| 7198 | if (!gdbarch_update_p (info)) |
| 7199 | internal_error (__FILE__, __LINE__, _("could not update architecture")); |
| 7200 | } |
| 7201 | |
| 7202 | static void |
| 7203 | powerpc_set_vector_abi (const char *args, int from_tty, |
| 7204 | struct cmd_list_element *c) |
| 7205 | { |
| 7206 | struct gdbarch_info info; |
| 7207 | int vector_abi; |
| 7208 | |
| 7209 | for (vector_abi = POWERPC_VEC_AUTO; |
| 7210 | vector_abi != POWERPC_VEC_LAST; |
| 7211 | vector_abi++) |
| 7212 | if (strcmp (powerpc_vector_abi_string, |
| 7213 | powerpc_vector_strings[vector_abi]) == 0) |
| 7214 | { |
| 7215 | powerpc_vector_abi_global = (enum powerpc_vector_abi) vector_abi; |
| 7216 | break; |
| 7217 | } |
| 7218 | |
| 7219 | if (vector_abi == POWERPC_VEC_LAST) |
| 7220 | internal_error (__FILE__, __LINE__, _("Invalid vector ABI accepted: %s."), |
| 7221 | powerpc_vector_abi_string); |
| 7222 | |
| 7223 | /* Update the architecture. */ |
| 7224 | gdbarch_info_init (&info); |
| 7225 | if (!gdbarch_update_p (info)) |
| 7226 | internal_error (__FILE__, __LINE__, _("could not update architecture")); |
| 7227 | } |
| 7228 | |
| 7229 | /* Show the current setting of the exact watchpoints flag. */ |
| 7230 | |
| 7231 | static void |
| 7232 | show_powerpc_exact_watchpoints (struct ui_file *file, int from_tty, |
| 7233 | struct cmd_list_element *c, |
| 7234 | const char *value) |
| 7235 | { |
| 7236 | fprintf_filtered (file, _("Use of exact watchpoints is %s.\n"), value); |
| 7237 | } |
| 7238 | |
| 7239 | /* Read a PPC instruction from memory. */ |
| 7240 | |
| 7241 | static unsigned int |
| 7242 | read_insn (struct frame_info *frame, CORE_ADDR pc) |
| 7243 | { |
| 7244 | struct gdbarch *gdbarch = get_frame_arch (frame); |
| 7245 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 7246 | |
| 7247 | return read_memory_unsigned_integer (pc, 4, byte_order); |
| 7248 | } |
| 7249 | |
| 7250 | /* Return non-zero if the instructions at PC match the series |
| 7251 | described in PATTERN, or zero otherwise. PATTERN is an array of |
| 7252 | 'struct ppc_insn_pattern' objects, terminated by an entry whose |
| 7253 | mask is zero. |
| 7254 | |
| 7255 | When the match is successful, fill INSNS[i] with what PATTERN[i] |
| 7256 | matched. If PATTERN[i] is optional, and the instruction wasn't |
| 7257 | present, set INSNS[i] to 0 (which is not a valid PPC instruction). |
| 7258 | INSNS should have as many elements as PATTERN, minus the terminator. |
| 7259 | Note that, if PATTERN contains optional instructions which aren't |
| 7260 | present in memory, then INSNS will have holes, so INSNS[i] isn't |
| 7261 | necessarily the i'th instruction in memory. */ |
| 7262 | |
| 7263 | int |
| 7264 | ppc_insns_match_pattern (struct frame_info *frame, CORE_ADDR pc, |
| 7265 | const struct ppc_insn_pattern *pattern, |
| 7266 | unsigned int *insns) |
| 7267 | { |
| 7268 | int i; |
| 7269 | unsigned int insn; |
| 7270 | |
| 7271 | for (i = 0, insn = 0; pattern[i].mask; i++) |
| 7272 | { |
| 7273 | if (insn == 0) |
| 7274 | insn = read_insn (frame, pc); |
| 7275 | insns[i] = 0; |
| 7276 | if ((insn & pattern[i].mask) == pattern[i].data) |
| 7277 | { |
| 7278 | insns[i] = insn; |
| 7279 | pc += 4; |
| 7280 | insn = 0; |
| 7281 | } |
| 7282 | else if (!pattern[i].optional) |
| 7283 | return 0; |
| 7284 | } |
| 7285 | |
| 7286 | return 1; |
| 7287 | } |
| 7288 | |
| 7289 | /* Return the 'd' field of the d-form instruction INSN, properly |
| 7290 | sign-extended. */ |
| 7291 | |
| 7292 | CORE_ADDR |
| 7293 | ppc_insn_d_field (unsigned int insn) |
| 7294 | { |
| 7295 | return ((((CORE_ADDR) insn & 0xffff) ^ 0x8000) - 0x8000); |
| 7296 | } |
| 7297 | |
| 7298 | /* Return the 'ds' field of the ds-form instruction INSN, with the two |
| 7299 | zero bits concatenated at the right, and properly |
| 7300 | sign-extended. */ |
| 7301 | |
| 7302 | CORE_ADDR |
| 7303 | ppc_insn_ds_field (unsigned int insn) |
| 7304 | { |
| 7305 | return ((((CORE_ADDR) insn & 0xfffc) ^ 0x8000) - 0x8000); |
| 7306 | } |
| 7307 | |
| 7308 | /* Initialization code. */ |
| 7309 | |
| 7310 | void |
| 7311 | _initialize_rs6000_tdep (void) |
| 7312 | { |
| 7313 | gdbarch_register (bfd_arch_rs6000, rs6000_gdbarch_init, rs6000_dump_tdep); |
| 7314 | gdbarch_register (bfd_arch_powerpc, rs6000_gdbarch_init, rs6000_dump_tdep); |
| 7315 | |
| 7316 | /* Initialize the standard target descriptions. */ |
| 7317 | initialize_tdesc_powerpc_32 (); |
| 7318 | initialize_tdesc_powerpc_altivec32 (); |
| 7319 | initialize_tdesc_powerpc_vsx32 (); |
| 7320 | initialize_tdesc_powerpc_403 (); |
| 7321 | initialize_tdesc_powerpc_403gc (); |
| 7322 | initialize_tdesc_powerpc_405 (); |
| 7323 | initialize_tdesc_powerpc_505 (); |
| 7324 | initialize_tdesc_powerpc_601 (); |
| 7325 | initialize_tdesc_powerpc_602 (); |
| 7326 | initialize_tdesc_powerpc_603 (); |
| 7327 | initialize_tdesc_powerpc_604 (); |
| 7328 | initialize_tdesc_powerpc_64 (); |
| 7329 | initialize_tdesc_powerpc_altivec64 (); |
| 7330 | initialize_tdesc_powerpc_vsx64 (); |
| 7331 | initialize_tdesc_powerpc_7400 (); |
| 7332 | initialize_tdesc_powerpc_750 (); |
| 7333 | initialize_tdesc_powerpc_860 (); |
| 7334 | initialize_tdesc_powerpc_e500 (); |
| 7335 | initialize_tdesc_rs6000 (); |
| 7336 | |
| 7337 | /* Add root prefix command for all "set powerpc"/"show powerpc" |
| 7338 | commands. */ |
| 7339 | add_prefix_cmd ("powerpc", no_class, set_powerpc_command, |
| 7340 | _("Various PowerPC-specific commands."), |
| 7341 | &setpowerpccmdlist, "set powerpc ", 0, &setlist); |
| 7342 | |
| 7343 | add_prefix_cmd ("powerpc", no_class, show_powerpc_command, |
| 7344 | _("Various PowerPC-specific commands."), |
| 7345 | &showpowerpccmdlist, "show powerpc ", 0, &showlist); |
| 7346 | |
| 7347 | /* Add a command to allow the user to force the ABI. */ |
| 7348 | add_setshow_auto_boolean_cmd ("soft-float", class_support, |
| 7349 | &powerpc_soft_float_global, |
| 7350 | _("Set whether to use a soft-float ABI."), |
| 7351 | _("Show whether to use a soft-float ABI."), |
| 7352 | NULL, |
| 7353 | powerpc_set_soft_float, NULL, |
| 7354 | &setpowerpccmdlist, &showpowerpccmdlist); |
| 7355 | |
| 7356 | add_setshow_enum_cmd ("vector-abi", class_support, powerpc_vector_strings, |
| 7357 | &powerpc_vector_abi_string, |
| 7358 | _("Set the vector ABI."), |
| 7359 | _("Show the vector ABI."), |
| 7360 | NULL, powerpc_set_vector_abi, NULL, |
| 7361 | &setpowerpccmdlist, &showpowerpccmdlist); |
| 7362 | |
| 7363 | add_setshow_boolean_cmd ("exact-watchpoints", class_support, |
| 7364 | &target_exact_watchpoints, |
| 7365 | _("\ |
| 7366 | Set whether to use just one debug register for watchpoints on scalars."), |
| 7367 | _("\ |
| 7368 | Show whether to use just one debug register for watchpoints on scalars."), |
| 7369 | _("\ |
| 7370 | If true, GDB will use only one debug register when watching a variable of\n\ |
| 7371 | scalar type, thus assuming that the variable is accessed through the address\n\ |
| 7372 | of its first byte."), |
| 7373 | NULL, show_powerpc_exact_watchpoints, |
| 7374 | &setpowerpccmdlist, &showpowerpccmdlist); |
| 7375 | } |