| 1 | /* Target-dependent code for GNU/Linux AArch64. |
| 2 | |
| 3 | Copyright (C) 2009-2020 Free Software Foundation, Inc. |
| 4 | Contributed by ARM Ltd. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 3 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 20 | |
| 21 | #include "defs.h" |
| 22 | |
| 23 | #include "gdbarch.h" |
| 24 | #include "glibc-tdep.h" |
| 25 | #include "linux-tdep.h" |
| 26 | #include "aarch64-tdep.h" |
| 27 | #include "aarch64-linux-tdep.h" |
| 28 | #include "osabi.h" |
| 29 | #include "solib-svr4.h" |
| 30 | #include "symtab.h" |
| 31 | #include "tramp-frame.h" |
| 32 | #include "trad-frame.h" |
| 33 | #include "target/target.h" |
| 34 | |
| 35 | #include "regcache.h" |
| 36 | #include "regset.h" |
| 37 | |
| 38 | #include "stap-probe.h" |
| 39 | #include "parser-defs.h" |
| 40 | #include "user-regs.h" |
| 41 | #include "xml-syscall.h" |
| 42 | #include <ctype.h> |
| 43 | |
| 44 | #include "record-full.h" |
| 45 | #include "linux-record.h" |
| 46 | |
| 47 | /* Signal frame handling. |
| 48 | |
| 49 | +------------+ ^ |
| 50 | | saved lr | | |
| 51 | +->| saved fp |--+ |
| 52 | | | | |
| 53 | | | | |
| 54 | | +------------+ |
| 55 | | | saved lr | |
| 56 | +--| saved fp | |
| 57 | ^ | | |
| 58 | | | | |
| 59 | | +------------+ |
| 60 | ^ | | |
| 61 | | | signal | |
| 62 | | | | SIGTRAMP_FRAME (struct rt_sigframe) |
| 63 | | | saved regs | |
| 64 | +--| saved sp |--> interrupted_sp |
| 65 | | | saved pc |--> interrupted_pc |
| 66 | | | | |
| 67 | | +------------+ |
| 68 | | | saved lr |--> default_restorer (movz x8, NR_sys_rt_sigreturn; svc 0) |
| 69 | +--| saved fp |<- FP |
| 70 | | | NORMAL_FRAME |
| 71 | | |<- SP |
| 72 | +------------+ |
| 73 | |
| 74 | On signal delivery, the kernel will create a signal handler stack |
| 75 | frame and setup the return address in LR to point at restorer stub. |
| 76 | The signal stack frame is defined by: |
| 77 | |
| 78 | struct rt_sigframe |
| 79 | { |
| 80 | siginfo_t info; |
| 81 | struct ucontext uc; |
| 82 | }; |
| 83 | |
| 84 | The ucontext has the following form: |
| 85 | struct ucontext |
| 86 | { |
| 87 | unsigned long uc_flags; |
| 88 | struct ucontext *uc_link; |
| 89 | stack_t uc_stack; |
| 90 | sigset_t uc_sigmask; |
| 91 | struct sigcontext uc_mcontext; |
| 92 | }; |
| 93 | |
| 94 | struct sigcontext |
| 95 | { |
| 96 | unsigned long fault_address; |
| 97 | unsigned long regs[31]; |
| 98 | unsigned long sp; / * 31 * / |
| 99 | unsigned long pc; / * 32 * / |
| 100 | unsigned long pstate; / * 33 * / |
| 101 | __u8 __reserved[4096] |
| 102 | }; |
| 103 | |
| 104 | The reserved space in sigcontext contains additional structures, each starting |
| 105 | with a aarch64_ctx, which specifies a unique identifier and the total size of |
| 106 | the structure. The final structure in reserved will start will a null |
| 107 | aarch64_ctx. The penultimate entry in reserved may be a extra_context which |
| 108 | then points to a further block of reserved space. |
| 109 | |
| 110 | struct aarch64_ctx { |
| 111 | u32 magic; |
| 112 | u32 size; |
| 113 | }; |
| 114 | |
| 115 | The restorer stub will always have the form: |
| 116 | |
| 117 | d28015a8 movz x8, #0xad |
| 118 | d4000001 svc #0x0 |
| 119 | |
| 120 | This is a system call sys_rt_sigreturn. |
| 121 | |
| 122 | We detect signal frames by snooping the return code for the restorer |
| 123 | instruction sequence. |
| 124 | |
| 125 | The handler then needs to recover the saved register set from |
| 126 | ucontext.uc_mcontext. */ |
| 127 | |
| 128 | /* These magic numbers need to reflect the layout of the kernel |
| 129 | defined struct rt_sigframe and ucontext. */ |
| 130 | #define AARCH64_SIGCONTEXT_REG_SIZE 8 |
| 131 | #define AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET 128 |
| 132 | #define AARCH64_UCONTEXT_SIGCONTEXT_OFFSET 176 |
| 133 | #define AARCH64_SIGCONTEXT_XO_OFFSET 8 |
| 134 | #define AARCH64_SIGCONTEXT_RESERVED_OFFSET 288 |
| 135 | |
| 136 | #define AARCH64_SIGCONTEXT_RESERVED_SIZE 4096 |
| 137 | |
| 138 | /* Unique identifiers that may be used for aarch64_ctx.magic. */ |
| 139 | #define AARCH64_EXTRA_MAGIC 0x45585401 |
| 140 | #define AARCH64_FPSIMD_MAGIC 0x46508001 |
| 141 | #define AARCH64_SVE_MAGIC 0x53564501 |
| 142 | |
| 143 | /* Defines for the extra_context that follows an AARCH64_EXTRA_MAGIC. */ |
| 144 | #define AARCH64_EXTRA_DATAP_OFFSET 8 |
| 145 | |
| 146 | /* Defines for the fpsimd that follows an AARCH64_FPSIMD_MAGIC. */ |
| 147 | #define AARCH64_FPSIMD_FPSR_OFFSET 8 |
| 148 | #define AARCH64_FPSIMD_FPCR_OFFSET 12 |
| 149 | #define AARCH64_FPSIMD_V0_OFFSET 16 |
| 150 | #define AARCH64_FPSIMD_VREG_SIZE 16 |
| 151 | |
| 152 | /* Defines for the sve structure that follows an AARCH64_SVE_MAGIC. */ |
| 153 | #define AARCH64_SVE_CONTEXT_VL_OFFSET 8 |
| 154 | #define AARCH64_SVE_CONTEXT_REGS_OFFSET 16 |
| 155 | #define AARCH64_SVE_CONTEXT_P_REGS_OFFSET(vq) (32 * vq * 16) |
| 156 | #define AARCH64_SVE_CONTEXT_FFR_OFFSET(vq) \ |
| 157 | (AARCH64_SVE_CONTEXT_P_REGS_OFFSET (vq) + (16 * vq * 2)) |
| 158 | #define AARCH64_SVE_CONTEXT_SIZE(vq) \ |
| 159 | (AARCH64_SVE_CONTEXT_FFR_OFFSET (vq) + (vq * 2)) |
| 160 | |
| 161 | |
| 162 | /* Read an aarch64_ctx, returning the magic value, and setting *SIZE to the |
| 163 | size, or return 0 on error. */ |
| 164 | |
| 165 | static uint32_t |
| 166 | read_aarch64_ctx (CORE_ADDR ctx_addr, enum bfd_endian byte_order, |
| 167 | uint32_t *size) |
| 168 | { |
| 169 | uint32_t magic = 0; |
| 170 | gdb_byte buf[4]; |
| 171 | |
| 172 | if (target_read_memory (ctx_addr, buf, 4) != 0) |
| 173 | return 0; |
| 174 | magic = extract_unsigned_integer (buf, 4, byte_order); |
| 175 | |
| 176 | if (target_read_memory (ctx_addr + 4, buf, 4) != 0) |
| 177 | return 0; |
| 178 | *size = extract_unsigned_integer (buf, 4, byte_order); |
| 179 | |
| 180 | return magic; |
| 181 | } |
| 182 | |
| 183 | /* Implement the "init" method of struct tramp_frame. */ |
| 184 | |
| 185 | static void |
| 186 | aarch64_linux_sigframe_init (const struct tramp_frame *self, |
| 187 | struct frame_info *this_frame, |
| 188 | struct trad_frame_cache *this_cache, |
| 189 | CORE_ADDR func) |
| 190 | { |
| 191 | struct gdbarch *gdbarch = get_frame_arch (this_frame); |
| 192 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 193 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 194 | CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM); |
| 195 | CORE_ADDR sigcontext_addr = (sp + AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET |
| 196 | + AARCH64_UCONTEXT_SIGCONTEXT_OFFSET ); |
| 197 | CORE_ADDR section = sigcontext_addr + AARCH64_SIGCONTEXT_RESERVED_OFFSET; |
| 198 | CORE_ADDR section_end = section + AARCH64_SIGCONTEXT_RESERVED_SIZE; |
| 199 | CORE_ADDR fpsimd = 0; |
| 200 | CORE_ADDR sve_regs = 0; |
| 201 | uint32_t size, magic; |
| 202 | bool extra_found = false; |
| 203 | int num_regs = gdbarch_num_regs (gdbarch); |
| 204 | |
| 205 | /* Read in the integer registers. */ |
| 206 | |
| 207 | for (int i = 0; i < 31; i++) |
| 208 | { |
| 209 | trad_frame_set_reg_addr (this_cache, |
| 210 | AARCH64_X0_REGNUM + i, |
| 211 | sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET |
| 212 | + i * AARCH64_SIGCONTEXT_REG_SIZE); |
| 213 | } |
| 214 | trad_frame_set_reg_addr (this_cache, AARCH64_SP_REGNUM, |
| 215 | sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET |
| 216 | + 31 * AARCH64_SIGCONTEXT_REG_SIZE); |
| 217 | trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, |
| 218 | sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET |
| 219 | + 32 * AARCH64_SIGCONTEXT_REG_SIZE); |
| 220 | |
| 221 | /* Search for the FP and SVE sections, stopping at null. */ |
| 222 | while ((magic = read_aarch64_ctx (section, byte_order, &size)) != 0 |
| 223 | && size != 0) |
| 224 | { |
| 225 | switch (magic) |
| 226 | { |
| 227 | case AARCH64_FPSIMD_MAGIC: |
| 228 | fpsimd = section; |
| 229 | section += size; |
| 230 | break; |
| 231 | |
| 232 | case AARCH64_SVE_MAGIC: |
| 233 | { |
| 234 | /* Check if the section is followed by a full SVE dump, and set |
| 235 | sve_regs if it is. */ |
| 236 | gdb_byte buf[4]; |
| 237 | uint16_t vq; |
| 238 | |
| 239 | if (!tdep->has_sve ()) |
| 240 | break; |
| 241 | |
| 242 | if (target_read_memory (section + AARCH64_SVE_CONTEXT_VL_OFFSET, |
| 243 | buf, 2) != 0) |
| 244 | { |
| 245 | section += size; |
| 246 | break; |
| 247 | } |
| 248 | vq = sve_vq_from_vl (extract_unsigned_integer (buf, 2, byte_order)); |
| 249 | |
| 250 | if (vq != tdep->vq) |
| 251 | error (_("Invalid vector length in signal frame %d vs %s."), vq, |
| 252 | pulongest (tdep->vq)); |
| 253 | |
| 254 | if (size >= AARCH64_SVE_CONTEXT_SIZE (vq)) |
| 255 | sve_regs = section + AARCH64_SVE_CONTEXT_REGS_OFFSET; |
| 256 | |
| 257 | section += size; |
| 258 | break; |
| 259 | } |
| 260 | |
| 261 | case AARCH64_EXTRA_MAGIC: |
| 262 | { |
| 263 | /* Extra is always the last valid section in reserved and points to |
| 264 | an additional block of memory filled with more sections. Reset |
| 265 | the address to the extra section and continue looking for more |
| 266 | structures. */ |
| 267 | gdb_byte buf[8]; |
| 268 | |
| 269 | if (target_read_memory (section + AARCH64_EXTRA_DATAP_OFFSET, |
| 270 | buf, 8) != 0) |
| 271 | { |
| 272 | section += size; |
| 273 | break; |
| 274 | } |
| 275 | |
| 276 | section = extract_unsigned_integer (buf, 8, byte_order); |
| 277 | extra_found = true; |
| 278 | break; |
| 279 | } |
| 280 | |
| 281 | default: |
| 282 | section += size; |
| 283 | break; |
| 284 | } |
| 285 | |
| 286 | /* Prevent searching past the end of the reserved section. The extra |
| 287 | section does not have a hard coded limit - we have to rely on it ending |
| 288 | with nulls. */ |
| 289 | if (!extra_found && section > section_end) |
| 290 | break; |
| 291 | } |
| 292 | |
| 293 | if (sve_regs != 0) |
| 294 | { |
| 295 | CORE_ADDR offset; |
| 296 | |
| 297 | for (int i = 0; i < 32; i++) |
| 298 | { |
| 299 | offset = sve_regs + (i * tdep->vq * 16); |
| 300 | trad_frame_set_reg_addr (this_cache, AARCH64_SVE_Z0_REGNUM + i, |
| 301 | offset); |
| 302 | trad_frame_set_reg_addr (this_cache, |
| 303 | num_regs + AARCH64_SVE_V0_REGNUM + i, |
| 304 | offset); |
| 305 | trad_frame_set_reg_addr (this_cache, num_regs + AARCH64_Q0_REGNUM + i, |
| 306 | offset); |
| 307 | trad_frame_set_reg_addr (this_cache, num_regs + AARCH64_D0_REGNUM + i, |
| 308 | offset); |
| 309 | trad_frame_set_reg_addr (this_cache, num_regs + AARCH64_S0_REGNUM + i, |
| 310 | offset); |
| 311 | trad_frame_set_reg_addr (this_cache, num_regs + AARCH64_H0_REGNUM + i, |
| 312 | offset); |
| 313 | trad_frame_set_reg_addr (this_cache, num_regs + AARCH64_B0_REGNUM + i, |
| 314 | offset); |
| 315 | } |
| 316 | |
| 317 | offset = sve_regs + AARCH64_SVE_CONTEXT_P_REGS_OFFSET (tdep->vq); |
| 318 | for (int i = 0; i < 16; i++) |
| 319 | trad_frame_set_reg_addr (this_cache, AARCH64_SVE_P0_REGNUM + i, |
| 320 | offset + (i * tdep->vq * 2)); |
| 321 | |
| 322 | offset = sve_regs + AARCH64_SVE_CONTEXT_FFR_OFFSET (tdep->vq); |
| 323 | trad_frame_set_reg_addr (this_cache, AARCH64_SVE_FFR_REGNUM, offset); |
| 324 | } |
| 325 | |
| 326 | if (fpsimd != 0) |
| 327 | { |
| 328 | trad_frame_set_reg_addr (this_cache, AARCH64_FPSR_REGNUM, |
| 329 | fpsimd + AARCH64_FPSIMD_FPSR_OFFSET); |
| 330 | trad_frame_set_reg_addr (this_cache, AARCH64_FPCR_REGNUM, |
| 331 | fpsimd + AARCH64_FPSIMD_FPCR_OFFSET); |
| 332 | |
| 333 | /* If there was no SVE section then set up the V registers. */ |
| 334 | if (sve_regs == 0) |
| 335 | for (int i = 0; i < 32; i++) |
| 336 | { |
| 337 | CORE_ADDR offset = (fpsimd + AARCH64_FPSIMD_V0_OFFSET |
| 338 | + (i * AARCH64_FPSIMD_VREG_SIZE)); |
| 339 | |
| 340 | trad_frame_set_reg_addr (this_cache, AARCH64_V0_REGNUM + i, offset); |
| 341 | trad_frame_set_reg_addr (this_cache, |
| 342 | num_regs + AARCH64_Q0_REGNUM + i, offset); |
| 343 | trad_frame_set_reg_addr (this_cache, |
| 344 | num_regs + AARCH64_D0_REGNUM + i, offset); |
| 345 | trad_frame_set_reg_addr (this_cache, |
| 346 | num_regs + AARCH64_S0_REGNUM + i, offset); |
| 347 | trad_frame_set_reg_addr (this_cache, |
| 348 | num_regs + AARCH64_H0_REGNUM + i, offset); |
| 349 | trad_frame_set_reg_addr (this_cache, |
| 350 | num_regs + AARCH64_B0_REGNUM + i, offset); |
| 351 | if (tdep->has_sve ()) |
| 352 | trad_frame_set_reg_addr (this_cache, |
| 353 | num_regs + AARCH64_SVE_V0_REGNUM + i, |
| 354 | offset); |
| 355 | } |
| 356 | } |
| 357 | |
| 358 | trad_frame_set_id (this_cache, frame_id_build (sp, func)); |
| 359 | } |
| 360 | |
| 361 | static const struct tramp_frame aarch64_linux_rt_sigframe = |
| 362 | { |
| 363 | SIGTRAMP_FRAME, |
| 364 | 4, |
| 365 | { |
| 366 | /* movz x8, 0x8b (S=1,o=10,h=0,i=0x8b,r=8) |
| 367 | Soo1 0010 1hhi iiii iiii iiii iiir rrrr */ |
| 368 | {0xd2801168, ULONGEST_MAX}, |
| 369 | |
| 370 | /* svc 0x0 (o=0, l=1) |
| 371 | 1101 0100 oooi iiii iiii iiii iii0 00ll */ |
| 372 | {0xd4000001, ULONGEST_MAX}, |
| 373 | {TRAMP_SENTINEL_INSN, ULONGEST_MAX} |
| 374 | }, |
| 375 | aarch64_linux_sigframe_init |
| 376 | }; |
| 377 | |
| 378 | /* Register maps. */ |
| 379 | |
| 380 | static const struct regcache_map_entry aarch64_linux_gregmap[] = |
| 381 | { |
| 382 | { 31, AARCH64_X0_REGNUM, 8 }, /* x0 ... x30 */ |
| 383 | { 1, AARCH64_SP_REGNUM, 8 }, |
| 384 | { 1, AARCH64_PC_REGNUM, 8 }, |
| 385 | { 1, AARCH64_CPSR_REGNUM, 8 }, |
| 386 | { 0 } |
| 387 | }; |
| 388 | |
| 389 | static const struct regcache_map_entry aarch64_linux_fpregmap[] = |
| 390 | { |
| 391 | { 32, AARCH64_V0_REGNUM, 16 }, /* v0 ... v31 */ |
| 392 | { 1, AARCH64_FPSR_REGNUM, 4 }, |
| 393 | { 1, AARCH64_FPCR_REGNUM, 4 }, |
| 394 | { 0 } |
| 395 | }; |
| 396 | |
| 397 | /* Register set definitions. */ |
| 398 | |
| 399 | const struct regset aarch64_linux_gregset = |
| 400 | { |
| 401 | aarch64_linux_gregmap, |
| 402 | regcache_supply_regset, regcache_collect_regset |
| 403 | }; |
| 404 | |
| 405 | const struct regset aarch64_linux_fpregset = |
| 406 | { |
| 407 | aarch64_linux_fpregmap, |
| 408 | regcache_supply_regset, regcache_collect_regset |
| 409 | }; |
| 410 | |
| 411 | /* The fields in an SVE header at the start of a SVE regset. */ |
| 412 | |
| 413 | #define SVE_HEADER_SIZE_LENGTH 4 |
| 414 | #define SVE_HEADER_MAX_SIZE_LENGTH 4 |
| 415 | #define SVE_HEADER_VL_LENGTH 2 |
| 416 | #define SVE_HEADER_MAX_VL_LENGTH 2 |
| 417 | #define SVE_HEADER_FLAGS_LENGTH 2 |
| 418 | #define SVE_HEADER_RESERVED_LENGTH 2 |
| 419 | |
| 420 | #define SVE_HEADER_SIZE_OFFSET 0 |
| 421 | #define SVE_HEADER_MAX_SIZE_OFFSET \ |
| 422 | (SVE_HEADER_SIZE_OFFSET + SVE_HEADER_SIZE_LENGTH) |
| 423 | #define SVE_HEADER_VL_OFFSET \ |
| 424 | (SVE_HEADER_MAX_SIZE_OFFSET + SVE_HEADER_MAX_SIZE_LENGTH) |
| 425 | #define SVE_HEADER_MAX_VL_OFFSET \ |
| 426 | (SVE_HEADER_VL_OFFSET + SVE_HEADER_VL_LENGTH) |
| 427 | #define SVE_HEADER_FLAGS_OFFSET \ |
| 428 | (SVE_HEADER_MAX_VL_OFFSET + SVE_HEADER_MAX_VL_LENGTH) |
| 429 | #define SVE_HEADER_RESERVED_OFFSET \ |
| 430 | (SVE_HEADER_FLAGS_OFFSET + SVE_HEADER_FLAGS_LENGTH) |
| 431 | #define SVE_HEADER_SIZE \ |
| 432 | (SVE_HEADER_RESERVED_OFFSET + SVE_HEADER_RESERVED_LENGTH) |
| 433 | |
| 434 | #define SVE_HEADER_FLAG_SVE 1 |
| 435 | |
| 436 | /* Get VQ value from SVE section in the core dump. */ |
| 437 | |
| 438 | static uint64_t |
| 439 | aarch64_linux_core_read_vq (struct gdbarch *gdbarch, bfd *abfd) |
| 440 | { |
| 441 | gdb_byte header[SVE_HEADER_SIZE]; |
| 442 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 443 | asection *sve_section = bfd_get_section_by_name (abfd, ".reg-aarch-sve"); |
| 444 | |
| 445 | if (sve_section == nullptr) |
| 446 | { |
| 447 | /* No SVE state. */ |
| 448 | return 0; |
| 449 | } |
| 450 | |
| 451 | size_t size = bfd_section_size (sve_section); |
| 452 | |
| 453 | /* Check extended state size. */ |
| 454 | if (size < SVE_HEADER_SIZE) |
| 455 | { |
| 456 | warning (_("'.reg-aarch-sve' section in core file too small.")); |
| 457 | return 0; |
| 458 | } |
| 459 | |
| 460 | if (!bfd_get_section_contents (abfd, sve_section, header, 0, SVE_HEADER_SIZE)) |
| 461 | { |
| 462 | warning (_("Couldn't read sve header from " |
| 463 | "'.reg-aarch-sve' section in core file.")); |
| 464 | return 0; |
| 465 | } |
| 466 | |
| 467 | uint64_t vl = extract_unsigned_integer (header + SVE_HEADER_VL_OFFSET, |
| 468 | SVE_HEADER_VL_LENGTH, byte_order); |
| 469 | uint64_t vq = sve_vq_from_vl (vl); |
| 470 | |
| 471 | if (vq > AARCH64_MAX_SVE_VQ) |
| 472 | { |
| 473 | warning (_("SVE Vector length in core file not supported by this version" |
| 474 | " of GDB. (VQ=%s)"), pulongest (vq)); |
| 475 | return 0; |
| 476 | } |
| 477 | else if (vq == 0) |
| 478 | { |
| 479 | warning (_("SVE Vector length in core file is invalid. (VQ=%s"), |
| 480 | pulongest (vq)); |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | return vq; |
| 485 | } |
| 486 | |
| 487 | /* Supply register REGNUM from BUF to REGCACHE, using the register map |
| 488 | in REGSET. If REGNUM is -1, do this for all registers in REGSET. |
| 489 | If BUF is NULL, set the registers to "unavailable" status. */ |
| 490 | |
| 491 | static void |
| 492 | aarch64_linux_supply_sve_regset (const struct regset *regset, |
| 493 | struct regcache *regcache, |
| 494 | int regnum, const void *buf, size_t size) |
| 495 | { |
| 496 | gdb_byte *header = (gdb_byte *) buf; |
| 497 | struct gdbarch *gdbarch = regcache->arch (); |
| 498 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 499 | |
| 500 | if (buf == nullptr) |
| 501 | return regcache->supply_regset (regset, regnum, nullptr, size); |
| 502 | gdb_assert (size > SVE_HEADER_SIZE); |
| 503 | |
| 504 | /* BUF contains an SVE header followed by a register dump of either the |
| 505 | passed in SVE regset or a NEON fpregset. */ |
| 506 | |
| 507 | /* Extract required fields from the header. */ |
| 508 | ULONGEST vl = extract_unsigned_integer (header + SVE_HEADER_VL_OFFSET, |
| 509 | SVE_HEADER_VL_LENGTH, byte_order); |
| 510 | uint16_t flags = extract_unsigned_integer (header + SVE_HEADER_FLAGS_OFFSET, |
| 511 | SVE_HEADER_FLAGS_LENGTH, |
| 512 | byte_order); |
| 513 | |
| 514 | if (regnum == -1 || regnum == AARCH64_SVE_VG_REGNUM) |
| 515 | { |
| 516 | gdb_byte vg_target[8]; |
| 517 | store_integer ((gdb_byte *)&vg_target, sizeof (uint64_t), byte_order, |
| 518 | sve_vg_from_vl (vl)); |
| 519 | regcache->raw_supply (AARCH64_SVE_VG_REGNUM, &vg_target); |
| 520 | } |
| 521 | |
| 522 | if (flags & SVE_HEADER_FLAG_SVE) |
| 523 | { |
| 524 | /* Register dump is a SVE structure. */ |
| 525 | regcache->supply_regset (regset, regnum, |
| 526 | (gdb_byte *) buf + SVE_HEADER_SIZE, |
| 527 | size - SVE_HEADER_SIZE); |
| 528 | } |
| 529 | else |
| 530 | { |
| 531 | /* Register dump is a fpsimd structure. First clear the SVE |
| 532 | registers. */ |
| 533 | for (int i = 0; i < AARCH64_SVE_Z_REGS_NUM; i++) |
| 534 | regcache->raw_supply_zeroed (AARCH64_SVE_Z0_REGNUM + i); |
| 535 | for (int i = 0; i < AARCH64_SVE_P_REGS_NUM; i++) |
| 536 | regcache->raw_supply_zeroed (AARCH64_SVE_P0_REGNUM + i); |
| 537 | regcache->raw_supply_zeroed (AARCH64_SVE_FFR_REGNUM); |
| 538 | |
| 539 | /* Then supply the fpsimd registers. */ |
| 540 | regcache->supply_regset (&aarch64_linux_fpregset, regnum, |
| 541 | (gdb_byte *) buf + SVE_HEADER_SIZE, |
| 542 | size - SVE_HEADER_SIZE); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /* Collect register REGNUM from REGCACHE to BUF, using the register |
| 547 | map in REGSET. If REGNUM is -1, do this for all registers in |
| 548 | REGSET. */ |
| 549 | |
| 550 | static void |
| 551 | aarch64_linux_collect_sve_regset (const struct regset *regset, |
| 552 | const struct regcache *regcache, |
| 553 | int regnum, void *buf, size_t size) |
| 554 | { |
| 555 | gdb_byte *header = (gdb_byte *) buf; |
| 556 | struct gdbarch *gdbarch = regcache->arch (); |
| 557 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 558 | uint64_t vq = gdbarch_tdep (gdbarch)->vq; |
| 559 | |
| 560 | gdb_assert (buf != NULL); |
| 561 | gdb_assert (size > SVE_HEADER_SIZE); |
| 562 | |
| 563 | /* BUF starts with a SVE header prior to the register dump. */ |
| 564 | |
| 565 | store_unsigned_integer (header + SVE_HEADER_SIZE_OFFSET, |
| 566 | SVE_HEADER_SIZE_LENGTH, byte_order, size); |
| 567 | store_unsigned_integer (header + SVE_HEADER_MAX_SIZE_OFFSET, |
| 568 | SVE_HEADER_MAX_SIZE_LENGTH, byte_order, size); |
| 569 | store_unsigned_integer (header + SVE_HEADER_VL_OFFSET, SVE_HEADER_VL_LENGTH, |
| 570 | byte_order, sve_vl_from_vq (vq)); |
| 571 | store_unsigned_integer (header + SVE_HEADER_MAX_VL_OFFSET, |
| 572 | SVE_HEADER_MAX_VL_LENGTH, byte_order, |
| 573 | sve_vl_from_vq (vq)); |
| 574 | store_unsigned_integer (header + SVE_HEADER_FLAGS_OFFSET, |
| 575 | SVE_HEADER_FLAGS_LENGTH, byte_order, |
| 576 | SVE_HEADER_FLAG_SVE); |
| 577 | store_unsigned_integer (header + SVE_HEADER_RESERVED_OFFSET, |
| 578 | SVE_HEADER_RESERVED_LENGTH, byte_order, 0); |
| 579 | |
| 580 | /* The SVE register dump follows. */ |
| 581 | regcache->collect_regset (regset, regnum, (gdb_byte *) buf + SVE_HEADER_SIZE, |
| 582 | size - SVE_HEADER_SIZE); |
| 583 | } |
| 584 | |
| 585 | /* Implement the "regset_from_core_section" gdbarch method. */ |
| 586 | |
| 587 | static void |
| 588 | aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, |
| 589 | iterate_over_regset_sections_cb *cb, |
| 590 | void *cb_data, |
| 591 | const struct regcache *regcache) |
| 592 | { |
| 593 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 594 | |
| 595 | cb (".reg", AARCH64_LINUX_SIZEOF_GREGSET, AARCH64_LINUX_SIZEOF_GREGSET, |
| 596 | &aarch64_linux_gregset, NULL, cb_data); |
| 597 | |
| 598 | if (tdep->has_sve ()) |
| 599 | { |
| 600 | /* Create this on the fly in order to handle vector register sizes. */ |
| 601 | const struct regcache_map_entry sve_regmap[] = |
| 602 | { |
| 603 | { 32, AARCH64_SVE_Z0_REGNUM, (int) (tdep->vq * 16) }, |
| 604 | { 16, AARCH64_SVE_P0_REGNUM, (int) (tdep->vq * 16 / 8) }, |
| 605 | { 1, AARCH64_SVE_FFR_REGNUM, 4 }, |
| 606 | { 1, AARCH64_FPSR_REGNUM, 4 }, |
| 607 | { 1, AARCH64_FPCR_REGNUM, 4 }, |
| 608 | { 0 } |
| 609 | }; |
| 610 | |
| 611 | const struct regset aarch64_linux_sve_regset = |
| 612 | { |
| 613 | sve_regmap, |
| 614 | aarch64_linux_supply_sve_regset, aarch64_linux_collect_sve_regset, |
| 615 | REGSET_VARIABLE_SIZE |
| 616 | }; |
| 617 | |
| 618 | cb (".reg-aarch-sve", |
| 619 | SVE_HEADER_SIZE + regcache_map_entry_size (aarch64_linux_fpregmap), |
| 620 | SVE_HEADER_SIZE + regcache_map_entry_size (sve_regmap), |
| 621 | &aarch64_linux_sve_regset, "SVE registers", cb_data); |
| 622 | } |
| 623 | else |
| 624 | cb (".reg2", AARCH64_LINUX_SIZEOF_FPREGSET, AARCH64_LINUX_SIZEOF_FPREGSET, |
| 625 | &aarch64_linux_fpregset, NULL, cb_data); |
| 626 | |
| 627 | |
| 628 | if (tdep->has_pauth ()) |
| 629 | { |
| 630 | /* Create this on the fly in order to handle the variable location. */ |
| 631 | const struct regcache_map_entry pauth_regmap[] = |
| 632 | { |
| 633 | { 2, AARCH64_PAUTH_DMASK_REGNUM (tdep->pauth_reg_base), 8}, |
| 634 | { 0 } |
| 635 | }; |
| 636 | |
| 637 | const struct regset aarch64_linux_pauth_regset = |
| 638 | { |
| 639 | pauth_regmap, regcache_supply_regset, regcache_collect_regset |
| 640 | }; |
| 641 | |
| 642 | cb (".reg-aarch-pauth", AARCH64_LINUX_SIZEOF_PAUTH, |
| 643 | AARCH64_LINUX_SIZEOF_PAUTH, &aarch64_linux_pauth_regset, |
| 644 | "pauth registers", cb_data); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | /* Implement the "core_read_description" gdbarch method. */ |
| 649 | |
| 650 | static const struct target_desc * |
| 651 | aarch64_linux_core_read_description (struct gdbarch *gdbarch, |
| 652 | struct target_ops *target, bfd *abfd) |
| 653 | { |
| 654 | CORE_ADDR hwcap = linux_get_hwcap (target); |
| 655 | |
| 656 | return aarch64_read_description (aarch64_linux_core_read_vq (gdbarch, abfd), |
| 657 | hwcap & AARCH64_HWCAP_PACA); |
| 658 | } |
| 659 | |
| 660 | /* Implementation of `gdbarch_stap_is_single_operand', as defined in |
| 661 | gdbarch.h. */ |
| 662 | |
| 663 | static int |
| 664 | aarch64_stap_is_single_operand (struct gdbarch *gdbarch, const char *s) |
| 665 | { |
| 666 | return (*s == '#' || isdigit (*s) /* Literal number. */ |
| 667 | || *s == '[' /* Register indirection. */ |
| 668 | || isalpha (*s)); /* Register value. */ |
| 669 | } |
| 670 | |
| 671 | /* This routine is used to parse a special token in AArch64's assembly. |
| 672 | |
| 673 | The special tokens parsed by it are: |
| 674 | |
| 675 | - Register displacement (e.g, [fp, #-8]) |
| 676 | |
| 677 | It returns one if the special token has been parsed successfully, |
| 678 | or zero if the current token is not considered special. */ |
| 679 | |
| 680 | static int |
| 681 | aarch64_stap_parse_special_token (struct gdbarch *gdbarch, |
| 682 | struct stap_parse_info *p) |
| 683 | { |
| 684 | if (*p->arg == '[') |
| 685 | { |
| 686 | /* Temporary holder for lookahead. */ |
| 687 | const char *tmp = p->arg; |
| 688 | char *endp; |
| 689 | /* Used to save the register name. */ |
| 690 | const char *start; |
| 691 | char *regname; |
| 692 | int len; |
| 693 | int got_minus = 0; |
| 694 | long displacement; |
| 695 | struct stoken str; |
| 696 | |
| 697 | ++tmp; |
| 698 | start = tmp; |
| 699 | |
| 700 | /* Register name. */ |
| 701 | while (isalnum (*tmp)) |
| 702 | ++tmp; |
| 703 | |
| 704 | if (*tmp != ',') |
| 705 | return 0; |
| 706 | |
| 707 | len = tmp - start; |
| 708 | regname = (char *) alloca (len + 2); |
| 709 | |
| 710 | strncpy (regname, start, len); |
| 711 | regname[len] = '\0'; |
| 712 | |
| 713 | if (user_reg_map_name_to_regnum (gdbarch, regname, len) == -1) |
| 714 | error (_("Invalid register name `%s' on expression `%s'."), |
| 715 | regname, p->saved_arg); |
| 716 | |
| 717 | ++tmp; |
| 718 | tmp = skip_spaces (tmp); |
| 719 | /* Now we expect a number. It can begin with '#' or simply |
| 720 | a digit. */ |
| 721 | if (*tmp == '#') |
| 722 | ++tmp; |
| 723 | |
| 724 | if (*tmp == '-') |
| 725 | { |
| 726 | ++tmp; |
| 727 | got_minus = 1; |
| 728 | } |
| 729 | else if (*tmp == '+') |
| 730 | ++tmp; |
| 731 | |
| 732 | if (!isdigit (*tmp)) |
| 733 | return 0; |
| 734 | |
| 735 | displacement = strtol (tmp, &endp, 10); |
| 736 | tmp = endp; |
| 737 | |
| 738 | /* Skipping last `]'. */ |
| 739 | if (*tmp++ != ']') |
| 740 | return 0; |
| 741 | |
| 742 | /* The displacement. */ |
| 743 | write_exp_elt_opcode (&p->pstate, OP_LONG); |
| 744 | write_exp_elt_type (&p->pstate, builtin_type (gdbarch)->builtin_long); |
| 745 | write_exp_elt_longcst (&p->pstate, displacement); |
| 746 | write_exp_elt_opcode (&p->pstate, OP_LONG); |
| 747 | if (got_minus) |
| 748 | write_exp_elt_opcode (&p->pstate, UNOP_NEG); |
| 749 | |
| 750 | /* The register name. */ |
| 751 | write_exp_elt_opcode (&p->pstate, OP_REGISTER); |
| 752 | str.ptr = regname; |
| 753 | str.length = len; |
| 754 | write_exp_string (&p->pstate, str); |
| 755 | write_exp_elt_opcode (&p->pstate, OP_REGISTER); |
| 756 | |
| 757 | write_exp_elt_opcode (&p->pstate, BINOP_ADD); |
| 758 | |
| 759 | /* Casting to the expected type. */ |
| 760 | write_exp_elt_opcode (&p->pstate, UNOP_CAST); |
| 761 | write_exp_elt_type (&p->pstate, lookup_pointer_type (p->arg_type)); |
| 762 | write_exp_elt_opcode (&p->pstate, UNOP_CAST); |
| 763 | |
| 764 | write_exp_elt_opcode (&p->pstate, UNOP_IND); |
| 765 | |
| 766 | p->arg = tmp; |
| 767 | } |
| 768 | else |
| 769 | return 0; |
| 770 | |
| 771 | return 1; |
| 772 | } |
| 773 | |
| 774 | /* AArch64 process record-replay constructs: syscall, signal etc. */ |
| 775 | |
| 776 | struct linux_record_tdep aarch64_linux_record_tdep; |
| 777 | |
| 778 | /* Enum that defines the AArch64 linux specific syscall identifiers used for |
| 779 | process record/replay. */ |
| 780 | |
| 781 | enum aarch64_syscall { |
| 782 | aarch64_sys_io_setup = 0, |
| 783 | aarch64_sys_io_destroy = 1, |
| 784 | aarch64_sys_io_submit = 2, |
| 785 | aarch64_sys_io_cancel = 3, |
| 786 | aarch64_sys_io_getevents = 4, |
| 787 | aarch64_sys_setxattr = 5, |
| 788 | aarch64_sys_lsetxattr = 6, |
| 789 | aarch64_sys_fsetxattr = 7, |
| 790 | aarch64_sys_getxattr = 8, |
| 791 | aarch64_sys_lgetxattr = 9, |
| 792 | aarch64_sys_fgetxattr = 10, |
| 793 | aarch64_sys_listxattr = 11, |
| 794 | aarch64_sys_llistxattr = 12, |
| 795 | aarch64_sys_flistxattr = 13, |
| 796 | aarch64_sys_removexattr = 14, |
| 797 | aarch64_sys_lremovexattr = 15, |
| 798 | aarch64_sys_fremovexattr = 16, |
| 799 | aarch64_sys_getcwd = 17, |
| 800 | aarch64_sys_lookup_dcookie = 18, |
| 801 | aarch64_sys_eventfd2 = 19, |
| 802 | aarch64_sys_epoll_create1 = 20, |
| 803 | aarch64_sys_epoll_ctl = 21, |
| 804 | aarch64_sys_epoll_pwait = 22, |
| 805 | aarch64_sys_dup = 23, |
| 806 | aarch64_sys_dup3 = 24, |
| 807 | aarch64_sys_fcntl = 25, |
| 808 | aarch64_sys_inotify_init1 = 26, |
| 809 | aarch64_sys_inotify_add_watch = 27, |
| 810 | aarch64_sys_inotify_rm_watch = 28, |
| 811 | aarch64_sys_ioctl = 29, |
| 812 | aarch64_sys_ioprio_set = 30, |
| 813 | aarch64_sys_ioprio_get = 31, |
| 814 | aarch64_sys_flock = 32, |
| 815 | aarch64_sys_mknodat = 33, |
| 816 | aarch64_sys_mkdirat = 34, |
| 817 | aarch64_sys_unlinkat = 35, |
| 818 | aarch64_sys_symlinkat = 36, |
| 819 | aarch64_sys_linkat = 37, |
| 820 | aarch64_sys_renameat = 38, |
| 821 | aarch64_sys_umount2 = 39, |
| 822 | aarch64_sys_mount = 40, |
| 823 | aarch64_sys_pivot_root = 41, |
| 824 | aarch64_sys_nfsservctl = 42, |
| 825 | aarch64_sys_statfs = 43, |
| 826 | aarch64_sys_fstatfs = 44, |
| 827 | aarch64_sys_truncate = 45, |
| 828 | aarch64_sys_ftruncate = 46, |
| 829 | aarch64_sys_fallocate = 47, |
| 830 | aarch64_sys_faccessat = 48, |
| 831 | aarch64_sys_chdir = 49, |
| 832 | aarch64_sys_fchdir = 50, |
| 833 | aarch64_sys_chroot = 51, |
| 834 | aarch64_sys_fchmod = 52, |
| 835 | aarch64_sys_fchmodat = 53, |
| 836 | aarch64_sys_fchownat = 54, |
| 837 | aarch64_sys_fchown = 55, |
| 838 | aarch64_sys_openat = 56, |
| 839 | aarch64_sys_close = 57, |
| 840 | aarch64_sys_vhangup = 58, |
| 841 | aarch64_sys_pipe2 = 59, |
| 842 | aarch64_sys_quotactl = 60, |
| 843 | aarch64_sys_getdents64 = 61, |
| 844 | aarch64_sys_lseek = 62, |
| 845 | aarch64_sys_read = 63, |
| 846 | aarch64_sys_write = 64, |
| 847 | aarch64_sys_readv = 65, |
| 848 | aarch64_sys_writev = 66, |
| 849 | aarch64_sys_pread64 = 67, |
| 850 | aarch64_sys_pwrite64 = 68, |
| 851 | aarch64_sys_preadv = 69, |
| 852 | aarch64_sys_pwritev = 70, |
| 853 | aarch64_sys_sendfile = 71, |
| 854 | aarch64_sys_pselect6 = 72, |
| 855 | aarch64_sys_ppoll = 73, |
| 856 | aarch64_sys_signalfd4 = 74, |
| 857 | aarch64_sys_vmsplice = 75, |
| 858 | aarch64_sys_splice = 76, |
| 859 | aarch64_sys_tee = 77, |
| 860 | aarch64_sys_readlinkat = 78, |
| 861 | aarch64_sys_newfstatat = 79, |
| 862 | aarch64_sys_fstat = 80, |
| 863 | aarch64_sys_sync = 81, |
| 864 | aarch64_sys_fsync = 82, |
| 865 | aarch64_sys_fdatasync = 83, |
| 866 | aarch64_sys_sync_file_range2 = 84, |
| 867 | aarch64_sys_sync_file_range = 84, |
| 868 | aarch64_sys_timerfd_create = 85, |
| 869 | aarch64_sys_timerfd_settime = 86, |
| 870 | aarch64_sys_timerfd_gettime = 87, |
| 871 | aarch64_sys_utimensat = 88, |
| 872 | aarch64_sys_acct = 89, |
| 873 | aarch64_sys_capget = 90, |
| 874 | aarch64_sys_capset = 91, |
| 875 | aarch64_sys_personality = 92, |
| 876 | aarch64_sys_exit = 93, |
| 877 | aarch64_sys_exit_group = 94, |
| 878 | aarch64_sys_waitid = 95, |
| 879 | aarch64_sys_set_tid_address = 96, |
| 880 | aarch64_sys_unshare = 97, |
| 881 | aarch64_sys_futex = 98, |
| 882 | aarch64_sys_set_robust_list = 99, |
| 883 | aarch64_sys_get_robust_list = 100, |
| 884 | aarch64_sys_nanosleep = 101, |
| 885 | aarch64_sys_getitimer = 102, |
| 886 | aarch64_sys_setitimer = 103, |
| 887 | aarch64_sys_kexec_load = 104, |
| 888 | aarch64_sys_init_module = 105, |
| 889 | aarch64_sys_delete_module = 106, |
| 890 | aarch64_sys_timer_create = 107, |
| 891 | aarch64_sys_timer_gettime = 108, |
| 892 | aarch64_sys_timer_getoverrun = 109, |
| 893 | aarch64_sys_timer_settime = 110, |
| 894 | aarch64_sys_timer_delete = 111, |
| 895 | aarch64_sys_clock_settime = 112, |
| 896 | aarch64_sys_clock_gettime = 113, |
| 897 | aarch64_sys_clock_getres = 114, |
| 898 | aarch64_sys_clock_nanosleep = 115, |
| 899 | aarch64_sys_syslog = 116, |
| 900 | aarch64_sys_ptrace = 117, |
| 901 | aarch64_sys_sched_setparam = 118, |
| 902 | aarch64_sys_sched_setscheduler = 119, |
| 903 | aarch64_sys_sched_getscheduler = 120, |
| 904 | aarch64_sys_sched_getparam = 121, |
| 905 | aarch64_sys_sched_setaffinity = 122, |
| 906 | aarch64_sys_sched_getaffinity = 123, |
| 907 | aarch64_sys_sched_yield = 124, |
| 908 | aarch64_sys_sched_get_priority_max = 125, |
| 909 | aarch64_sys_sched_get_priority_min = 126, |
| 910 | aarch64_sys_sched_rr_get_interval = 127, |
| 911 | aarch64_sys_kill = 129, |
| 912 | aarch64_sys_tkill = 130, |
| 913 | aarch64_sys_tgkill = 131, |
| 914 | aarch64_sys_sigaltstack = 132, |
| 915 | aarch64_sys_rt_sigsuspend = 133, |
| 916 | aarch64_sys_rt_sigaction = 134, |
| 917 | aarch64_sys_rt_sigprocmask = 135, |
| 918 | aarch64_sys_rt_sigpending = 136, |
| 919 | aarch64_sys_rt_sigtimedwait = 137, |
| 920 | aarch64_sys_rt_sigqueueinfo = 138, |
| 921 | aarch64_sys_rt_sigreturn = 139, |
| 922 | aarch64_sys_setpriority = 140, |
| 923 | aarch64_sys_getpriority = 141, |
| 924 | aarch64_sys_reboot = 142, |
| 925 | aarch64_sys_setregid = 143, |
| 926 | aarch64_sys_setgid = 144, |
| 927 | aarch64_sys_setreuid = 145, |
| 928 | aarch64_sys_setuid = 146, |
| 929 | aarch64_sys_setresuid = 147, |
| 930 | aarch64_sys_getresuid = 148, |
| 931 | aarch64_sys_setresgid = 149, |
| 932 | aarch64_sys_getresgid = 150, |
| 933 | aarch64_sys_setfsuid = 151, |
| 934 | aarch64_sys_setfsgid = 152, |
| 935 | aarch64_sys_times = 153, |
| 936 | aarch64_sys_setpgid = 154, |
| 937 | aarch64_sys_getpgid = 155, |
| 938 | aarch64_sys_getsid = 156, |
| 939 | aarch64_sys_setsid = 157, |
| 940 | aarch64_sys_getgroups = 158, |
| 941 | aarch64_sys_setgroups = 159, |
| 942 | aarch64_sys_uname = 160, |
| 943 | aarch64_sys_sethostname = 161, |
| 944 | aarch64_sys_setdomainname = 162, |
| 945 | aarch64_sys_getrlimit = 163, |
| 946 | aarch64_sys_setrlimit = 164, |
| 947 | aarch64_sys_getrusage = 165, |
| 948 | aarch64_sys_umask = 166, |
| 949 | aarch64_sys_prctl = 167, |
| 950 | aarch64_sys_getcpu = 168, |
| 951 | aarch64_sys_gettimeofday = 169, |
| 952 | aarch64_sys_settimeofday = 170, |
| 953 | aarch64_sys_adjtimex = 171, |
| 954 | aarch64_sys_getpid = 172, |
| 955 | aarch64_sys_getppid = 173, |
| 956 | aarch64_sys_getuid = 174, |
| 957 | aarch64_sys_geteuid = 175, |
| 958 | aarch64_sys_getgid = 176, |
| 959 | aarch64_sys_getegid = 177, |
| 960 | aarch64_sys_gettid = 178, |
| 961 | aarch64_sys_sysinfo = 179, |
| 962 | aarch64_sys_mq_open = 180, |
| 963 | aarch64_sys_mq_unlink = 181, |
| 964 | aarch64_sys_mq_timedsend = 182, |
| 965 | aarch64_sys_mq_timedreceive = 183, |
| 966 | aarch64_sys_mq_notify = 184, |
| 967 | aarch64_sys_mq_getsetattr = 185, |
| 968 | aarch64_sys_msgget = 186, |
| 969 | aarch64_sys_msgctl = 187, |
| 970 | aarch64_sys_msgrcv = 188, |
| 971 | aarch64_sys_msgsnd = 189, |
| 972 | aarch64_sys_semget = 190, |
| 973 | aarch64_sys_semctl = 191, |
| 974 | aarch64_sys_semtimedop = 192, |
| 975 | aarch64_sys_semop = 193, |
| 976 | aarch64_sys_shmget = 194, |
| 977 | aarch64_sys_shmctl = 195, |
| 978 | aarch64_sys_shmat = 196, |
| 979 | aarch64_sys_shmdt = 197, |
| 980 | aarch64_sys_socket = 198, |
| 981 | aarch64_sys_socketpair = 199, |
| 982 | aarch64_sys_bind = 200, |
| 983 | aarch64_sys_listen = 201, |
| 984 | aarch64_sys_accept = 202, |
| 985 | aarch64_sys_connect = 203, |
| 986 | aarch64_sys_getsockname = 204, |
| 987 | aarch64_sys_getpeername = 205, |
| 988 | aarch64_sys_sendto = 206, |
| 989 | aarch64_sys_recvfrom = 207, |
| 990 | aarch64_sys_setsockopt = 208, |
| 991 | aarch64_sys_getsockopt = 209, |
| 992 | aarch64_sys_shutdown = 210, |
| 993 | aarch64_sys_sendmsg = 211, |
| 994 | aarch64_sys_recvmsg = 212, |
| 995 | aarch64_sys_readahead = 213, |
| 996 | aarch64_sys_brk = 214, |
| 997 | aarch64_sys_munmap = 215, |
| 998 | aarch64_sys_mremap = 216, |
| 999 | aarch64_sys_add_key = 217, |
| 1000 | aarch64_sys_request_key = 218, |
| 1001 | aarch64_sys_keyctl = 219, |
| 1002 | aarch64_sys_clone = 220, |
| 1003 | aarch64_sys_execve = 221, |
| 1004 | aarch64_sys_mmap = 222, |
| 1005 | aarch64_sys_fadvise64 = 223, |
| 1006 | aarch64_sys_swapon = 224, |
| 1007 | aarch64_sys_swapoff = 225, |
| 1008 | aarch64_sys_mprotect = 226, |
| 1009 | aarch64_sys_msync = 227, |
| 1010 | aarch64_sys_mlock = 228, |
| 1011 | aarch64_sys_munlock = 229, |
| 1012 | aarch64_sys_mlockall = 230, |
| 1013 | aarch64_sys_munlockall = 231, |
| 1014 | aarch64_sys_mincore = 232, |
| 1015 | aarch64_sys_madvise = 233, |
| 1016 | aarch64_sys_remap_file_pages = 234, |
| 1017 | aarch64_sys_mbind = 235, |
| 1018 | aarch64_sys_get_mempolicy = 236, |
| 1019 | aarch64_sys_set_mempolicy = 237, |
| 1020 | aarch64_sys_migrate_pages = 238, |
| 1021 | aarch64_sys_move_pages = 239, |
| 1022 | aarch64_sys_rt_tgsigqueueinfo = 240, |
| 1023 | aarch64_sys_perf_event_open = 241, |
| 1024 | aarch64_sys_accept4 = 242, |
| 1025 | aarch64_sys_recvmmsg = 243, |
| 1026 | aarch64_sys_wait4 = 260, |
| 1027 | aarch64_sys_prlimit64 = 261, |
| 1028 | aarch64_sys_fanotify_init = 262, |
| 1029 | aarch64_sys_fanotify_mark = 263, |
| 1030 | aarch64_sys_name_to_handle_at = 264, |
| 1031 | aarch64_sys_open_by_handle_at = 265, |
| 1032 | aarch64_sys_clock_adjtime = 266, |
| 1033 | aarch64_sys_syncfs = 267, |
| 1034 | aarch64_sys_setns = 268, |
| 1035 | aarch64_sys_sendmmsg = 269, |
| 1036 | aarch64_sys_process_vm_readv = 270, |
| 1037 | aarch64_sys_process_vm_writev = 271, |
| 1038 | aarch64_sys_kcmp = 272, |
| 1039 | aarch64_sys_finit_module = 273, |
| 1040 | aarch64_sys_sched_setattr = 274, |
| 1041 | aarch64_sys_sched_getattr = 275, |
| 1042 | }; |
| 1043 | |
| 1044 | /* aarch64_canonicalize_syscall maps syscall ids from the native AArch64 |
| 1045 | linux set of syscall ids into a canonical set of syscall ids used by |
| 1046 | process record. */ |
| 1047 | |
| 1048 | static enum gdb_syscall |
| 1049 | aarch64_canonicalize_syscall (enum aarch64_syscall syscall_number) |
| 1050 | { |
| 1051 | #define SYSCALL_MAP(SYSCALL) case aarch64_sys_##SYSCALL: \ |
| 1052 | return gdb_sys_##SYSCALL |
| 1053 | |
| 1054 | #define UNSUPPORTED_SYSCALL_MAP(SYSCALL) case aarch64_sys_##SYSCALL: \ |
| 1055 | return gdb_sys_no_syscall |
| 1056 | |
| 1057 | switch (syscall_number) |
| 1058 | { |
| 1059 | SYSCALL_MAP (io_setup); |
| 1060 | SYSCALL_MAP (io_destroy); |
| 1061 | SYSCALL_MAP (io_submit); |
| 1062 | SYSCALL_MAP (io_cancel); |
| 1063 | SYSCALL_MAP (io_getevents); |
| 1064 | |
| 1065 | SYSCALL_MAP (setxattr); |
| 1066 | SYSCALL_MAP (lsetxattr); |
| 1067 | SYSCALL_MAP (fsetxattr); |
| 1068 | SYSCALL_MAP (getxattr); |
| 1069 | SYSCALL_MAP (lgetxattr); |
| 1070 | SYSCALL_MAP (fgetxattr); |
| 1071 | SYSCALL_MAP (listxattr); |
| 1072 | SYSCALL_MAP (llistxattr); |
| 1073 | SYSCALL_MAP (flistxattr); |
| 1074 | SYSCALL_MAP (removexattr); |
| 1075 | SYSCALL_MAP (lremovexattr); |
| 1076 | SYSCALL_MAP (fremovexattr); |
| 1077 | SYSCALL_MAP (getcwd); |
| 1078 | SYSCALL_MAP (lookup_dcookie); |
| 1079 | SYSCALL_MAP (eventfd2); |
| 1080 | SYSCALL_MAP (epoll_create1); |
| 1081 | SYSCALL_MAP (epoll_ctl); |
| 1082 | SYSCALL_MAP (epoll_pwait); |
| 1083 | SYSCALL_MAP (dup); |
| 1084 | SYSCALL_MAP (dup3); |
| 1085 | SYSCALL_MAP (fcntl); |
| 1086 | SYSCALL_MAP (inotify_init1); |
| 1087 | SYSCALL_MAP (inotify_add_watch); |
| 1088 | SYSCALL_MAP (inotify_rm_watch); |
| 1089 | SYSCALL_MAP (ioctl); |
| 1090 | SYSCALL_MAP (ioprio_set); |
| 1091 | SYSCALL_MAP (ioprio_get); |
| 1092 | SYSCALL_MAP (flock); |
| 1093 | SYSCALL_MAP (mknodat); |
| 1094 | SYSCALL_MAP (mkdirat); |
| 1095 | SYSCALL_MAP (unlinkat); |
| 1096 | SYSCALL_MAP (symlinkat); |
| 1097 | SYSCALL_MAP (linkat); |
| 1098 | SYSCALL_MAP (renameat); |
| 1099 | UNSUPPORTED_SYSCALL_MAP (umount2); |
| 1100 | SYSCALL_MAP (mount); |
| 1101 | SYSCALL_MAP (pivot_root); |
| 1102 | SYSCALL_MAP (nfsservctl); |
| 1103 | SYSCALL_MAP (statfs); |
| 1104 | SYSCALL_MAP (truncate); |
| 1105 | SYSCALL_MAP (ftruncate); |
| 1106 | SYSCALL_MAP (fallocate); |
| 1107 | SYSCALL_MAP (faccessat); |
| 1108 | SYSCALL_MAP (fchdir); |
| 1109 | SYSCALL_MAP (chroot); |
| 1110 | SYSCALL_MAP (fchmod); |
| 1111 | SYSCALL_MAP (fchmodat); |
| 1112 | SYSCALL_MAP (fchownat); |
| 1113 | SYSCALL_MAP (fchown); |
| 1114 | SYSCALL_MAP (openat); |
| 1115 | SYSCALL_MAP (close); |
| 1116 | SYSCALL_MAP (vhangup); |
| 1117 | SYSCALL_MAP (pipe2); |
| 1118 | SYSCALL_MAP (quotactl); |
| 1119 | SYSCALL_MAP (getdents64); |
| 1120 | SYSCALL_MAP (lseek); |
| 1121 | SYSCALL_MAP (read); |
| 1122 | SYSCALL_MAP (write); |
| 1123 | SYSCALL_MAP (readv); |
| 1124 | SYSCALL_MAP (writev); |
| 1125 | SYSCALL_MAP (pread64); |
| 1126 | SYSCALL_MAP (pwrite64); |
| 1127 | UNSUPPORTED_SYSCALL_MAP (preadv); |
| 1128 | UNSUPPORTED_SYSCALL_MAP (pwritev); |
| 1129 | SYSCALL_MAP (sendfile); |
| 1130 | SYSCALL_MAP (pselect6); |
| 1131 | SYSCALL_MAP (ppoll); |
| 1132 | UNSUPPORTED_SYSCALL_MAP (signalfd4); |
| 1133 | SYSCALL_MAP (vmsplice); |
| 1134 | SYSCALL_MAP (splice); |
| 1135 | SYSCALL_MAP (tee); |
| 1136 | SYSCALL_MAP (readlinkat); |
| 1137 | SYSCALL_MAP (newfstatat); |
| 1138 | |
| 1139 | SYSCALL_MAP (fstat); |
| 1140 | SYSCALL_MAP (sync); |
| 1141 | SYSCALL_MAP (fsync); |
| 1142 | SYSCALL_MAP (fdatasync); |
| 1143 | SYSCALL_MAP (sync_file_range); |
| 1144 | UNSUPPORTED_SYSCALL_MAP (timerfd_create); |
| 1145 | UNSUPPORTED_SYSCALL_MAP (timerfd_settime); |
| 1146 | UNSUPPORTED_SYSCALL_MAP (timerfd_gettime); |
| 1147 | UNSUPPORTED_SYSCALL_MAP (utimensat); |
| 1148 | SYSCALL_MAP (acct); |
| 1149 | SYSCALL_MAP (capget); |
| 1150 | SYSCALL_MAP (capset); |
| 1151 | SYSCALL_MAP (personality); |
| 1152 | SYSCALL_MAP (exit); |
| 1153 | SYSCALL_MAP (exit_group); |
| 1154 | SYSCALL_MAP (waitid); |
| 1155 | SYSCALL_MAP (set_tid_address); |
| 1156 | SYSCALL_MAP (unshare); |
| 1157 | SYSCALL_MAP (futex); |
| 1158 | SYSCALL_MAP (set_robust_list); |
| 1159 | SYSCALL_MAP (get_robust_list); |
| 1160 | SYSCALL_MAP (nanosleep); |
| 1161 | |
| 1162 | SYSCALL_MAP (getitimer); |
| 1163 | SYSCALL_MAP (setitimer); |
| 1164 | SYSCALL_MAP (kexec_load); |
| 1165 | SYSCALL_MAP (init_module); |
| 1166 | SYSCALL_MAP (delete_module); |
| 1167 | SYSCALL_MAP (timer_create); |
| 1168 | SYSCALL_MAP (timer_settime); |
| 1169 | SYSCALL_MAP (timer_gettime); |
| 1170 | SYSCALL_MAP (timer_getoverrun); |
| 1171 | SYSCALL_MAP (timer_delete); |
| 1172 | SYSCALL_MAP (clock_settime); |
| 1173 | SYSCALL_MAP (clock_gettime); |
| 1174 | SYSCALL_MAP (clock_getres); |
| 1175 | SYSCALL_MAP (clock_nanosleep); |
| 1176 | SYSCALL_MAP (syslog); |
| 1177 | SYSCALL_MAP (ptrace); |
| 1178 | SYSCALL_MAP (sched_setparam); |
| 1179 | SYSCALL_MAP (sched_setscheduler); |
| 1180 | SYSCALL_MAP (sched_getscheduler); |
| 1181 | SYSCALL_MAP (sched_getparam); |
| 1182 | SYSCALL_MAP (sched_setaffinity); |
| 1183 | SYSCALL_MAP (sched_getaffinity); |
| 1184 | SYSCALL_MAP (sched_yield); |
| 1185 | SYSCALL_MAP (sched_get_priority_max); |
| 1186 | SYSCALL_MAP (sched_get_priority_min); |
| 1187 | SYSCALL_MAP (sched_rr_get_interval); |
| 1188 | SYSCALL_MAP (kill); |
| 1189 | SYSCALL_MAP (tkill); |
| 1190 | SYSCALL_MAP (tgkill); |
| 1191 | SYSCALL_MAP (sigaltstack); |
| 1192 | SYSCALL_MAP (rt_sigsuspend); |
| 1193 | SYSCALL_MAP (rt_sigaction); |
| 1194 | SYSCALL_MAP (rt_sigprocmask); |
| 1195 | SYSCALL_MAP (rt_sigpending); |
| 1196 | SYSCALL_MAP (rt_sigtimedwait); |
| 1197 | SYSCALL_MAP (rt_sigqueueinfo); |
| 1198 | SYSCALL_MAP (rt_sigreturn); |
| 1199 | SYSCALL_MAP (setpriority); |
| 1200 | SYSCALL_MAP (getpriority); |
| 1201 | SYSCALL_MAP (reboot); |
| 1202 | SYSCALL_MAP (setregid); |
| 1203 | SYSCALL_MAP (setgid); |
| 1204 | SYSCALL_MAP (setreuid); |
| 1205 | SYSCALL_MAP (setuid); |
| 1206 | SYSCALL_MAP (setresuid); |
| 1207 | SYSCALL_MAP (getresuid); |
| 1208 | SYSCALL_MAP (setresgid); |
| 1209 | SYSCALL_MAP (getresgid); |
| 1210 | SYSCALL_MAP (setfsuid); |
| 1211 | SYSCALL_MAP (setfsgid); |
| 1212 | SYSCALL_MAP (times); |
| 1213 | SYSCALL_MAP (setpgid); |
| 1214 | SYSCALL_MAP (getpgid); |
| 1215 | SYSCALL_MAP (getsid); |
| 1216 | SYSCALL_MAP (setsid); |
| 1217 | SYSCALL_MAP (getgroups); |
| 1218 | SYSCALL_MAP (setgroups); |
| 1219 | SYSCALL_MAP (uname); |
| 1220 | SYSCALL_MAP (sethostname); |
| 1221 | SYSCALL_MAP (setdomainname); |
| 1222 | SYSCALL_MAP (getrlimit); |
| 1223 | SYSCALL_MAP (setrlimit); |
| 1224 | SYSCALL_MAP (getrusage); |
| 1225 | SYSCALL_MAP (umask); |
| 1226 | SYSCALL_MAP (prctl); |
| 1227 | SYSCALL_MAP (getcpu); |
| 1228 | SYSCALL_MAP (gettimeofday); |
| 1229 | SYSCALL_MAP (settimeofday); |
| 1230 | SYSCALL_MAP (adjtimex); |
| 1231 | SYSCALL_MAP (getpid); |
| 1232 | SYSCALL_MAP (getppid); |
| 1233 | SYSCALL_MAP (getuid); |
| 1234 | SYSCALL_MAP (geteuid); |
| 1235 | SYSCALL_MAP (getgid); |
| 1236 | SYSCALL_MAP (getegid); |
| 1237 | SYSCALL_MAP (gettid); |
| 1238 | SYSCALL_MAP (sysinfo); |
| 1239 | SYSCALL_MAP (mq_open); |
| 1240 | SYSCALL_MAP (mq_unlink); |
| 1241 | SYSCALL_MAP (mq_timedsend); |
| 1242 | SYSCALL_MAP (mq_timedreceive); |
| 1243 | SYSCALL_MAP (mq_notify); |
| 1244 | SYSCALL_MAP (mq_getsetattr); |
| 1245 | SYSCALL_MAP (msgget); |
| 1246 | SYSCALL_MAP (msgctl); |
| 1247 | SYSCALL_MAP (msgrcv); |
| 1248 | SYSCALL_MAP (msgsnd); |
| 1249 | SYSCALL_MAP (semget); |
| 1250 | SYSCALL_MAP (semctl); |
| 1251 | SYSCALL_MAP (semtimedop); |
| 1252 | SYSCALL_MAP (semop); |
| 1253 | SYSCALL_MAP (shmget); |
| 1254 | SYSCALL_MAP (shmctl); |
| 1255 | SYSCALL_MAP (shmat); |
| 1256 | SYSCALL_MAP (shmdt); |
| 1257 | SYSCALL_MAP (socket); |
| 1258 | SYSCALL_MAP (socketpair); |
| 1259 | SYSCALL_MAP (bind); |
| 1260 | SYSCALL_MAP (listen); |
| 1261 | SYSCALL_MAP (accept); |
| 1262 | SYSCALL_MAP (connect); |
| 1263 | SYSCALL_MAP (getsockname); |
| 1264 | SYSCALL_MAP (getpeername); |
| 1265 | SYSCALL_MAP (sendto); |
| 1266 | SYSCALL_MAP (recvfrom); |
| 1267 | SYSCALL_MAP (setsockopt); |
| 1268 | SYSCALL_MAP (getsockopt); |
| 1269 | SYSCALL_MAP (shutdown); |
| 1270 | SYSCALL_MAP (sendmsg); |
| 1271 | SYSCALL_MAP (recvmsg); |
| 1272 | SYSCALL_MAP (readahead); |
| 1273 | SYSCALL_MAP (brk); |
| 1274 | SYSCALL_MAP (munmap); |
| 1275 | SYSCALL_MAP (mremap); |
| 1276 | SYSCALL_MAP (add_key); |
| 1277 | SYSCALL_MAP (request_key); |
| 1278 | SYSCALL_MAP (keyctl); |
| 1279 | SYSCALL_MAP (clone); |
| 1280 | SYSCALL_MAP (execve); |
| 1281 | |
| 1282 | case aarch64_sys_mmap: |
| 1283 | return gdb_sys_mmap2; |
| 1284 | |
| 1285 | SYSCALL_MAP (fadvise64); |
| 1286 | SYSCALL_MAP (swapon); |
| 1287 | SYSCALL_MAP (swapoff); |
| 1288 | SYSCALL_MAP (mprotect); |
| 1289 | SYSCALL_MAP (msync); |
| 1290 | SYSCALL_MAP (mlock); |
| 1291 | SYSCALL_MAP (munlock); |
| 1292 | SYSCALL_MAP (mlockall); |
| 1293 | SYSCALL_MAP (munlockall); |
| 1294 | SYSCALL_MAP (mincore); |
| 1295 | SYSCALL_MAP (madvise); |
| 1296 | SYSCALL_MAP (remap_file_pages); |
| 1297 | SYSCALL_MAP (mbind); |
| 1298 | SYSCALL_MAP (get_mempolicy); |
| 1299 | SYSCALL_MAP (set_mempolicy); |
| 1300 | SYSCALL_MAP (migrate_pages); |
| 1301 | SYSCALL_MAP (move_pages); |
| 1302 | UNSUPPORTED_SYSCALL_MAP (rt_tgsigqueueinfo); |
| 1303 | UNSUPPORTED_SYSCALL_MAP (perf_event_open); |
| 1304 | UNSUPPORTED_SYSCALL_MAP (accept4); |
| 1305 | UNSUPPORTED_SYSCALL_MAP (recvmmsg); |
| 1306 | |
| 1307 | SYSCALL_MAP (wait4); |
| 1308 | |
| 1309 | UNSUPPORTED_SYSCALL_MAP (prlimit64); |
| 1310 | UNSUPPORTED_SYSCALL_MAP (fanotify_init); |
| 1311 | UNSUPPORTED_SYSCALL_MAP (fanotify_mark); |
| 1312 | UNSUPPORTED_SYSCALL_MAP (name_to_handle_at); |
| 1313 | UNSUPPORTED_SYSCALL_MAP (open_by_handle_at); |
| 1314 | UNSUPPORTED_SYSCALL_MAP (clock_adjtime); |
| 1315 | UNSUPPORTED_SYSCALL_MAP (syncfs); |
| 1316 | UNSUPPORTED_SYSCALL_MAP (setns); |
| 1317 | UNSUPPORTED_SYSCALL_MAP (sendmmsg); |
| 1318 | UNSUPPORTED_SYSCALL_MAP (process_vm_readv); |
| 1319 | UNSUPPORTED_SYSCALL_MAP (process_vm_writev); |
| 1320 | UNSUPPORTED_SYSCALL_MAP (kcmp); |
| 1321 | UNSUPPORTED_SYSCALL_MAP (finit_module); |
| 1322 | UNSUPPORTED_SYSCALL_MAP (sched_setattr); |
| 1323 | UNSUPPORTED_SYSCALL_MAP (sched_getattr); |
| 1324 | default: |
| 1325 | return gdb_sys_no_syscall; |
| 1326 | } |
| 1327 | } |
| 1328 | |
| 1329 | /* Retrieve the syscall number at a ptrace syscall-stop, either on syscall entry |
| 1330 | or exit. Return -1 upon error. */ |
| 1331 | |
| 1332 | static LONGEST |
| 1333 | aarch64_linux_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread) |
| 1334 | { |
| 1335 | struct regcache *regs = get_thread_regcache (thread); |
| 1336 | LONGEST ret; |
| 1337 | |
| 1338 | /* Get the system call number from register x8. */ |
| 1339 | regs->cooked_read (AARCH64_X0_REGNUM + 8, &ret); |
| 1340 | |
| 1341 | /* On exit from a successful execve, we will be in a new process and all the |
| 1342 | registers will be cleared - x0 to x30 will be 0, except for a 1 in x7. |
| 1343 | This function will only ever get called when stopped at the entry or exit |
| 1344 | of a syscall, so by checking for 0 in x0 (arg0/retval), x1 (arg1), x8 |
| 1345 | (syscall), x29 (FP) and x30 (LR) we can infer: |
| 1346 | 1) Either inferior is at exit from successful execve. |
| 1347 | 2) Or inferior is at entry to a call to io_setup with invalid arguments and |
| 1348 | a corrupted FP and LR. |
| 1349 | It should be safe enough to assume case 1. */ |
| 1350 | if (ret == 0) |
| 1351 | { |
| 1352 | LONGEST x1 = -1, fp = -1, lr = -1; |
| 1353 | regs->cooked_read (AARCH64_X0_REGNUM + 1, &x1); |
| 1354 | regs->cooked_read (AARCH64_FP_REGNUM, &fp); |
| 1355 | regs->cooked_read (AARCH64_LR_REGNUM, &lr); |
| 1356 | if (x1 == 0 && fp ==0 && lr == 0) |
| 1357 | return aarch64_sys_execve; |
| 1358 | } |
| 1359 | |
| 1360 | return ret; |
| 1361 | } |
| 1362 | |
| 1363 | /* Record all registers but PC register for process-record. */ |
| 1364 | |
| 1365 | static int |
| 1366 | aarch64_all_but_pc_registers_record (struct regcache *regcache) |
| 1367 | { |
| 1368 | int i; |
| 1369 | |
| 1370 | for (i = AARCH64_X0_REGNUM; i < AARCH64_PC_REGNUM; i++) |
| 1371 | if (record_full_arch_list_add_reg (regcache, i)) |
| 1372 | return -1; |
| 1373 | |
| 1374 | if (record_full_arch_list_add_reg (regcache, AARCH64_CPSR_REGNUM)) |
| 1375 | return -1; |
| 1376 | |
| 1377 | return 0; |
| 1378 | } |
| 1379 | |
| 1380 | /* Handler for aarch64 system call instruction recording. */ |
| 1381 | |
| 1382 | static int |
| 1383 | aarch64_linux_syscall_record (struct regcache *regcache, |
| 1384 | unsigned long svc_number) |
| 1385 | { |
| 1386 | int ret = 0; |
| 1387 | enum gdb_syscall syscall_gdb; |
| 1388 | |
| 1389 | syscall_gdb = |
| 1390 | aarch64_canonicalize_syscall ((enum aarch64_syscall) svc_number); |
| 1391 | |
| 1392 | if (syscall_gdb < 0) |
| 1393 | { |
| 1394 | printf_unfiltered (_("Process record and replay target doesn't " |
| 1395 | "support syscall number %s\n"), |
| 1396 | plongest (svc_number)); |
| 1397 | return -1; |
| 1398 | } |
| 1399 | |
| 1400 | if (syscall_gdb == gdb_sys_sigreturn |
| 1401 | || syscall_gdb == gdb_sys_rt_sigreturn) |
| 1402 | { |
| 1403 | if (aarch64_all_but_pc_registers_record (regcache)) |
| 1404 | return -1; |
| 1405 | return 0; |
| 1406 | } |
| 1407 | |
| 1408 | ret = record_linux_system_call (syscall_gdb, regcache, |
| 1409 | &aarch64_linux_record_tdep); |
| 1410 | if (ret != 0) |
| 1411 | return ret; |
| 1412 | |
| 1413 | /* Record the return value of the system call. */ |
| 1414 | if (record_full_arch_list_add_reg (regcache, AARCH64_X0_REGNUM)) |
| 1415 | return -1; |
| 1416 | /* Record LR. */ |
| 1417 | if (record_full_arch_list_add_reg (regcache, AARCH64_LR_REGNUM)) |
| 1418 | return -1; |
| 1419 | /* Record CPSR. */ |
| 1420 | if (record_full_arch_list_add_reg (regcache, AARCH64_CPSR_REGNUM)) |
| 1421 | return -1; |
| 1422 | |
| 1423 | return 0; |
| 1424 | } |
| 1425 | |
| 1426 | /* Implement the "gcc_target_options" gdbarch method. */ |
| 1427 | |
| 1428 | static std::string |
| 1429 | aarch64_linux_gcc_target_options (struct gdbarch *gdbarch) |
| 1430 | { |
| 1431 | /* GCC doesn't know "-m64". */ |
| 1432 | return {}; |
| 1433 | } |
| 1434 | |
| 1435 | static void |
| 1436 | aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
| 1437 | { |
| 1438 | static const char *const stap_integer_prefixes[] = { "#", "", NULL }; |
| 1439 | static const char *const stap_register_prefixes[] = { "", NULL }; |
| 1440 | static const char *const stap_register_indirection_prefixes[] = { "[", |
| 1441 | NULL }; |
| 1442 | static const char *const stap_register_indirection_suffixes[] = { "]", |
| 1443 | NULL }; |
| 1444 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
| 1445 | |
| 1446 | tdep->lowest_pc = 0x8000; |
| 1447 | |
| 1448 | linux_init_abi (info, gdbarch); |
| 1449 | |
| 1450 | set_solib_svr4_fetch_link_map_offsets (gdbarch, |
| 1451 | svr4_lp64_fetch_link_map_offsets); |
| 1452 | |
| 1453 | /* Enable TLS support. */ |
| 1454 | set_gdbarch_fetch_tls_load_module_address (gdbarch, |
| 1455 | svr4_fetch_objfile_link_map); |
| 1456 | |
| 1457 | /* Shared library handling. */ |
| 1458 | set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); |
| 1459 | set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver); |
| 1460 | |
| 1461 | tramp_frame_prepend_unwinder (gdbarch, &aarch64_linux_rt_sigframe); |
| 1462 | |
| 1463 | /* Enable longjmp. */ |
| 1464 | tdep->jb_pc = 11; |
| 1465 | |
| 1466 | set_gdbarch_iterate_over_regset_sections |
| 1467 | (gdbarch, aarch64_linux_iterate_over_regset_sections); |
| 1468 | set_gdbarch_core_read_description |
| 1469 | (gdbarch, aarch64_linux_core_read_description); |
| 1470 | |
| 1471 | /* SystemTap related. */ |
| 1472 | set_gdbarch_stap_integer_prefixes (gdbarch, stap_integer_prefixes); |
| 1473 | set_gdbarch_stap_register_prefixes (gdbarch, stap_register_prefixes); |
| 1474 | set_gdbarch_stap_register_indirection_prefixes (gdbarch, |
| 1475 | stap_register_indirection_prefixes); |
| 1476 | set_gdbarch_stap_register_indirection_suffixes (gdbarch, |
| 1477 | stap_register_indirection_suffixes); |
| 1478 | set_gdbarch_stap_is_single_operand (gdbarch, aarch64_stap_is_single_operand); |
| 1479 | set_gdbarch_stap_parse_special_token (gdbarch, |
| 1480 | aarch64_stap_parse_special_token); |
| 1481 | |
| 1482 | /* Reversible debugging, process record. */ |
| 1483 | set_gdbarch_process_record (gdbarch, aarch64_process_record); |
| 1484 | /* Syscall record. */ |
| 1485 | tdep->aarch64_syscall_record = aarch64_linux_syscall_record; |
| 1486 | |
| 1487 | /* The top byte of a user space address known as the "tag", |
| 1488 | is ignored by the kernel and can be regarded as additional |
| 1489 | data associated with the address. */ |
| 1490 | set_gdbarch_significant_addr_bit (gdbarch, 56); |
| 1491 | |
| 1492 | /* Initialize the aarch64_linux_record_tdep. */ |
| 1493 | /* These values are the size of the type that will be used in a system |
| 1494 | call. They are obtained from Linux Kernel source. */ |
| 1495 | aarch64_linux_record_tdep.size_pointer |
| 1496 | = gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT; |
| 1497 | aarch64_linux_record_tdep.size__old_kernel_stat = 32; |
| 1498 | aarch64_linux_record_tdep.size_tms = 32; |
| 1499 | aarch64_linux_record_tdep.size_loff_t = 8; |
| 1500 | aarch64_linux_record_tdep.size_flock = 32; |
| 1501 | aarch64_linux_record_tdep.size_oldold_utsname = 45; |
| 1502 | aarch64_linux_record_tdep.size_ustat = 32; |
| 1503 | aarch64_linux_record_tdep.size_old_sigaction = 32; |
| 1504 | aarch64_linux_record_tdep.size_old_sigset_t = 8; |
| 1505 | aarch64_linux_record_tdep.size_rlimit = 16; |
| 1506 | aarch64_linux_record_tdep.size_rusage = 144; |
| 1507 | aarch64_linux_record_tdep.size_timeval = 16; |
| 1508 | aarch64_linux_record_tdep.size_timezone = 8; |
| 1509 | aarch64_linux_record_tdep.size_old_gid_t = 2; |
| 1510 | aarch64_linux_record_tdep.size_old_uid_t = 2; |
| 1511 | aarch64_linux_record_tdep.size_fd_set = 128; |
| 1512 | aarch64_linux_record_tdep.size_old_dirent = 280; |
| 1513 | aarch64_linux_record_tdep.size_statfs = 120; |
| 1514 | aarch64_linux_record_tdep.size_statfs64 = 120; |
| 1515 | aarch64_linux_record_tdep.size_sockaddr = 16; |
| 1516 | aarch64_linux_record_tdep.size_int |
| 1517 | = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; |
| 1518 | aarch64_linux_record_tdep.size_long |
| 1519 | = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
| 1520 | aarch64_linux_record_tdep.size_ulong |
| 1521 | = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
| 1522 | aarch64_linux_record_tdep.size_msghdr = 56; |
| 1523 | aarch64_linux_record_tdep.size_itimerval = 32; |
| 1524 | aarch64_linux_record_tdep.size_stat = 144; |
| 1525 | aarch64_linux_record_tdep.size_old_utsname = 325; |
| 1526 | aarch64_linux_record_tdep.size_sysinfo = 112; |
| 1527 | aarch64_linux_record_tdep.size_msqid_ds = 120; |
| 1528 | aarch64_linux_record_tdep.size_shmid_ds = 112; |
| 1529 | aarch64_linux_record_tdep.size_new_utsname = 390; |
| 1530 | aarch64_linux_record_tdep.size_timex = 208; |
| 1531 | aarch64_linux_record_tdep.size_mem_dqinfo = 24; |
| 1532 | aarch64_linux_record_tdep.size_if_dqblk = 72; |
| 1533 | aarch64_linux_record_tdep.size_fs_quota_stat = 80; |
| 1534 | aarch64_linux_record_tdep.size_timespec = 16; |
| 1535 | aarch64_linux_record_tdep.size_pollfd = 8; |
| 1536 | aarch64_linux_record_tdep.size_NFS_FHSIZE = 32; |
| 1537 | aarch64_linux_record_tdep.size_knfsd_fh = 132; |
| 1538 | aarch64_linux_record_tdep.size_TASK_COMM_LEN = 16; |
| 1539 | aarch64_linux_record_tdep.size_sigaction = 32; |
| 1540 | aarch64_linux_record_tdep.size_sigset_t = 8; |
| 1541 | aarch64_linux_record_tdep.size_siginfo_t = 128; |
| 1542 | aarch64_linux_record_tdep.size_cap_user_data_t = 8; |
| 1543 | aarch64_linux_record_tdep.size_stack_t = 24; |
| 1544 | aarch64_linux_record_tdep.size_off_t = 8; |
| 1545 | aarch64_linux_record_tdep.size_stat64 = 144; |
| 1546 | aarch64_linux_record_tdep.size_gid_t = 4; |
| 1547 | aarch64_linux_record_tdep.size_uid_t = 4; |
| 1548 | aarch64_linux_record_tdep.size_PAGE_SIZE = 4096; |
| 1549 | aarch64_linux_record_tdep.size_flock64 = 32; |
| 1550 | aarch64_linux_record_tdep.size_user_desc = 16; |
| 1551 | aarch64_linux_record_tdep.size_io_event = 32; |
| 1552 | aarch64_linux_record_tdep.size_iocb = 64; |
| 1553 | aarch64_linux_record_tdep.size_epoll_event = 12; |
| 1554 | aarch64_linux_record_tdep.size_itimerspec = 32; |
| 1555 | aarch64_linux_record_tdep.size_mq_attr = 64; |
| 1556 | aarch64_linux_record_tdep.size_termios = 36; |
| 1557 | aarch64_linux_record_tdep.size_termios2 = 44; |
| 1558 | aarch64_linux_record_tdep.size_pid_t = 4; |
| 1559 | aarch64_linux_record_tdep.size_winsize = 8; |
| 1560 | aarch64_linux_record_tdep.size_serial_struct = 72; |
| 1561 | aarch64_linux_record_tdep.size_serial_icounter_struct = 80; |
| 1562 | aarch64_linux_record_tdep.size_hayes_esp_config = 12; |
| 1563 | aarch64_linux_record_tdep.size_size_t = 8; |
| 1564 | aarch64_linux_record_tdep.size_iovec = 16; |
| 1565 | aarch64_linux_record_tdep.size_time_t = 8; |
| 1566 | |
| 1567 | /* These values are the second argument of system call "sys_ioctl". |
| 1568 | They are obtained from Linux Kernel source. */ |
| 1569 | aarch64_linux_record_tdep.ioctl_TCGETS = 0x5401; |
| 1570 | aarch64_linux_record_tdep.ioctl_TCSETS = 0x5402; |
| 1571 | aarch64_linux_record_tdep.ioctl_TCSETSW = 0x5403; |
| 1572 | aarch64_linux_record_tdep.ioctl_TCSETSF = 0x5404; |
| 1573 | aarch64_linux_record_tdep.ioctl_TCGETA = 0x5405; |
| 1574 | aarch64_linux_record_tdep.ioctl_TCSETA = 0x5406; |
| 1575 | aarch64_linux_record_tdep.ioctl_TCSETAW = 0x5407; |
| 1576 | aarch64_linux_record_tdep.ioctl_TCSETAF = 0x5408; |
| 1577 | aarch64_linux_record_tdep.ioctl_TCSBRK = 0x5409; |
| 1578 | aarch64_linux_record_tdep.ioctl_TCXONC = 0x540a; |
| 1579 | aarch64_linux_record_tdep.ioctl_TCFLSH = 0x540b; |
| 1580 | aarch64_linux_record_tdep.ioctl_TIOCEXCL = 0x540c; |
| 1581 | aarch64_linux_record_tdep.ioctl_TIOCNXCL = 0x540d; |
| 1582 | aarch64_linux_record_tdep.ioctl_TIOCSCTTY = 0x540e; |
| 1583 | aarch64_linux_record_tdep.ioctl_TIOCGPGRP = 0x540f; |
| 1584 | aarch64_linux_record_tdep.ioctl_TIOCSPGRP = 0x5410; |
| 1585 | aarch64_linux_record_tdep.ioctl_TIOCOUTQ = 0x5411; |
| 1586 | aarch64_linux_record_tdep.ioctl_TIOCSTI = 0x5412; |
| 1587 | aarch64_linux_record_tdep.ioctl_TIOCGWINSZ = 0x5413; |
| 1588 | aarch64_linux_record_tdep.ioctl_TIOCSWINSZ = 0x5414; |
| 1589 | aarch64_linux_record_tdep.ioctl_TIOCMGET = 0x5415; |
| 1590 | aarch64_linux_record_tdep.ioctl_TIOCMBIS = 0x5416; |
| 1591 | aarch64_linux_record_tdep.ioctl_TIOCMBIC = 0x5417; |
| 1592 | aarch64_linux_record_tdep.ioctl_TIOCMSET = 0x5418; |
| 1593 | aarch64_linux_record_tdep.ioctl_TIOCGSOFTCAR = 0x5419; |
| 1594 | aarch64_linux_record_tdep.ioctl_TIOCSSOFTCAR = 0x541a; |
| 1595 | aarch64_linux_record_tdep.ioctl_FIONREAD = 0x541b; |
| 1596 | aarch64_linux_record_tdep.ioctl_TIOCINQ = 0x541b; |
| 1597 | aarch64_linux_record_tdep.ioctl_TIOCLINUX = 0x541c; |
| 1598 | aarch64_linux_record_tdep.ioctl_TIOCCONS = 0x541d; |
| 1599 | aarch64_linux_record_tdep.ioctl_TIOCGSERIAL = 0x541e; |
| 1600 | aarch64_linux_record_tdep.ioctl_TIOCSSERIAL = 0x541f; |
| 1601 | aarch64_linux_record_tdep.ioctl_TIOCPKT = 0x5420; |
| 1602 | aarch64_linux_record_tdep.ioctl_FIONBIO = 0x5421; |
| 1603 | aarch64_linux_record_tdep.ioctl_TIOCNOTTY = 0x5422; |
| 1604 | aarch64_linux_record_tdep.ioctl_TIOCSETD = 0x5423; |
| 1605 | aarch64_linux_record_tdep.ioctl_TIOCGETD = 0x5424; |
| 1606 | aarch64_linux_record_tdep.ioctl_TCSBRKP = 0x5425; |
| 1607 | aarch64_linux_record_tdep.ioctl_TIOCTTYGSTRUCT = 0x5426; |
| 1608 | aarch64_linux_record_tdep.ioctl_TIOCSBRK = 0x5427; |
| 1609 | aarch64_linux_record_tdep.ioctl_TIOCCBRK = 0x5428; |
| 1610 | aarch64_linux_record_tdep.ioctl_TIOCGSID = 0x5429; |
| 1611 | aarch64_linux_record_tdep.ioctl_TCGETS2 = 0x802c542a; |
| 1612 | aarch64_linux_record_tdep.ioctl_TCSETS2 = 0x402c542b; |
| 1613 | aarch64_linux_record_tdep.ioctl_TCSETSW2 = 0x402c542c; |
| 1614 | aarch64_linux_record_tdep.ioctl_TCSETSF2 = 0x402c542d; |
| 1615 | aarch64_linux_record_tdep.ioctl_TIOCGPTN = 0x80045430; |
| 1616 | aarch64_linux_record_tdep.ioctl_TIOCSPTLCK = 0x40045431; |
| 1617 | aarch64_linux_record_tdep.ioctl_FIONCLEX = 0x5450; |
| 1618 | aarch64_linux_record_tdep.ioctl_FIOCLEX = 0x5451; |
| 1619 | aarch64_linux_record_tdep.ioctl_FIOASYNC = 0x5452; |
| 1620 | aarch64_linux_record_tdep.ioctl_TIOCSERCONFIG = 0x5453; |
| 1621 | aarch64_linux_record_tdep.ioctl_TIOCSERGWILD = 0x5454; |
| 1622 | aarch64_linux_record_tdep.ioctl_TIOCSERSWILD = 0x5455; |
| 1623 | aarch64_linux_record_tdep.ioctl_TIOCGLCKTRMIOS = 0x5456; |
| 1624 | aarch64_linux_record_tdep.ioctl_TIOCSLCKTRMIOS = 0x5457; |
| 1625 | aarch64_linux_record_tdep.ioctl_TIOCSERGSTRUCT = 0x5458; |
| 1626 | aarch64_linux_record_tdep.ioctl_TIOCSERGETLSR = 0x5459; |
| 1627 | aarch64_linux_record_tdep.ioctl_TIOCSERGETMULTI = 0x545a; |
| 1628 | aarch64_linux_record_tdep.ioctl_TIOCSERSETMULTI = 0x545b; |
| 1629 | aarch64_linux_record_tdep.ioctl_TIOCMIWAIT = 0x545c; |
| 1630 | aarch64_linux_record_tdep.ioctl_TIOCGICOUNT = 0x545d; |
| 1631 | aarch64_linux_record_tdep.ioctl_TIOCGHAYESESP = 0x545e; |
| 1632 | aarch64_linux_record_tdep.ioctl_TIOCSHAYESESP = 0x545f; |
| 1633 | aarch64_linux_record_tdep.ioctl_FIOQSIZE = 0x5460; |
| 1634 | |
| 1635 | /* These values are the second argument of system call "sys_fcntl" |
| 1636 | and "sys_fcntl64". They are obtained from Linux Kernel source. */ |
| 1637 | aarch64_linux_record_tdep.fcntl_F_GETLK = 5; |
| 1638 | aarch64_linux_record_tdep.fcntl_F_GETLK64 = 12; |
| 1639 | aarch64_linux_record_tdep.fcntl_F_SETLK64 = 13; |
| 1640 | aarch64_linux_record_tdep.fcntl_F_SETLKW64 = 14; |
| 1641 | |
| 1642 | /* The AArch64 syscall calling convention: reg x0-x6 for arguments, |
| 1643 | reg x8 for syscall number and return value in reg x0. */ |
| 1644 | aarch64_linux_record_tdep.arg1 = AARCH64_X0_REGNUM + 0; |
| 1645 | aarch64_linux_record_tdep.arg2 = AARCH64_X0_REGNUM + 1; |
| 1646 | aarch64_linux_record_tdep.arg3 = AARCH64_X0_REGNUM + 2; |
| 1647 | aarch64_linux_record_tdep.arg4 = AARCH64_X0_REGNUM + 3; |
| 1648 | aarch64_linux_record_tdep.arg5 = AARCH64_X0_REGNUM + 4; |
| 1649 | aarch64_linux_record_tdep.arg6 = AARCH64_X0_REGNUM + 5; |
| 1650 | aarch64_linux_record_tdep.arg7 = AARCH64_X0_REGNUM + 6; |
| 1651 | |
| 1652 | /* `catch syscall' */ |
| 1653 | set_xml_syscall_file_name (gdbarch, "syscalls/aarch64-linux.xml"); |
| 1654 | set_gdbarch_get_syscall_number (gdbarch, aarch64_linux_get_syscall_number); |
| 1655 | |
| 1656 | /* Displaced stepping. */ |
| 1657 | set_gdbarch_max_insn_length (gdbarch, 4 * AARCH64_DISPLACED_MODIFIED_INSNS); |
| 1658 | set_gdbarch_displaced_step_copy_insn (gdbarch, |
| 1659 | aarch64_displaced_step_copy_insn); |
| 1660 | set_gdbarch_displaced_step_fixup (gdbarch, aarch64_displaced_step_fixup); |
| 1661 | set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location); |
| 1662 | set_gdbarch_displaced_step_hw_singlestep (gdbarch, |
| 1663 | aarch64_displaced_step_hw_singlestep); |
| 1664 | |
| 1665 | set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options); |
| 1666 | } |
| 1667 | |
| 1668 | void |
| 1669 | _initialize_aarch64_linux_tdep (void) |
| 1670 | { |
| 1671 | gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_LINUX, |
| 1672 | aarch64_linux_init_abi); |
| 1673 | } |