/* Target-dependent code for GNU/Linux AArch64. Copyright (C) 2009-2016 Free Software Foundation, Inc. Contributed by ARM Ltd. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include "defs.h" #include "gdbarch.h" #include "arch-utils.h" #include "glibc-tdep.h" #include "linux-tdep.h" #include "aarch64-tdep.h" #include "aarch64-linux-tdep.h" #include "osabi.h" #include "solib-svr4.h" #include "symtab.h" #include "tramp-frame.h" #include "trad-frame.h" #include "inferior.h" #include "regcache.h" #include "regset.h" #include "cli/cli-utils.h" #include "stap-probe.h" #include "parser-defs.h" #include "user-regs.h" #include "xml-syscall.h" #include #include "record-full.h" #include "linux-record.h" /* Signal frame handling. +------------+ ^ | saved lr | | +->| saved fp |--+ | | | | | | | +------------+ | | saved lr | +--| saved fp | ^ | | | | | | +------------+ ^ | | | | signal | | | | SIGTRAMP_FRAME (struct rt_sigframe) | | saved regs | +--| saved sp |--> interrupted_sp | | saved pc |--> interrupted_pc | | | | +------------+ | | saved lr |--> default_restorer (movz x8, NR_sys_rt_sigreturn; svc 0) +--| saved fp |<- FP | | NORMAL_FRAME | |<- SP +------------+ On signal delivery, the kernel will create a signal handler stack frame and setup the return address in LR to point at restorer stub. The signal stack frame is defined by: struct rt_sigframe { siginfo_t info; struct ucontext uc; }; typedef struct { ... 128 bytes } siginfo_t; The ucontext has the following form: struct ucontext { unsigned long uc_flags; struct ucontext *uc_link; stack_t uc_stack; sigset_t uc_sigmask; struct sigcontext uc_mcontext; }; typedef struct sigaltstack { void *ss_sp; int ss_flags; size_t ss_size; } stack_t; struct sigcontext { unsigned long fault_address; unsigned long regs[31]; unsigned long sp; / * 31 * / unsigned long pc; / * 32 * / unsigned long pstate; / * 33 * / __u8 __reserved[4096] }; The restorer stub will always have the form: d28015a8 movz x8, #0xad d4000001 svc #0x0 This is a system call sys_rt_sigreturn. We detect signal frames by snooping the return code for the restorer instruction sequence. The handler then needs to recover the saved register set from ucontext.uc_mcontext. */ /* These magic numbers need to reflect the layout of the kernel defined struct rt_sigframe and ucontext. */ #define AARCH64_SIGCONTEXT_REG_SIZE 8 #define AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET 128 #define AARCH64_UCONTEXT_SIGCONTEXT_OFFSET 176 #define AARCH64_SIGCONTEXT_XO_OFFSET 8 /* Implement the "init" method of struct tramp_frame. */ static void aarch64_linux_sigframe_init (const struct tramp_frame *self, struct frame_info *this_frame, struct trad_frame_cache *this_cache, CORE_ADDR func) { struct gdbarch *gdbarch = get_frame_arch (this_frame); CORE_ADDR sp = get_frame_register_unsigned (this_frame, AARCH64_SP_REGNUM); CORE_ADDR sigcontext_addr = sp + AARCH64_RT_SIGFRAME_UCONTEXT_OFFSET + AARCH64_UCONTEXT_SIGCONTEXT_OFFSET; int i; for (i = 0; i < 31; i++) { trad_frame_set_reg_addr (this_cache, AARCH64_X0_REGNUM + i, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + i * AARCH64_SIGCONTEXT_REG_SIZE); } trad_frame_set_reg_addr (this_cache, AARCH64_SP_REGNUM, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + 31 * AARCH64_SIGCONTEXT_REG_SIZE); trad_frame_set_reg_addr (this_cache, AARCH64_PC_REGNUM, sigcontext_addr + AARCH64_SIGCONTEXT_XO_OFFSET + 32 * AARCH64_SIGCONTEXT_REG_SIZE); trad_frame_set_id (this_cache, frame_id_build (sp, func)); } static const struct tramp_frame aarch64_linux_rt_sigframe = { SIGTRAMP_FRAME, 4, { /* movz x8, 0x8b (S=1,o=10,h=0,i=0x8b,r=8) Soo1 0010 1hhi iiii iiii iiii iiir rrrr */ {0xd2801168, -1}, /* svc 0x0 (o=0, l=1) 1101 0100 oooi iiii iiii iiii iii0 00ll */ {0xd4000001, -1}, {TRAMP_SENTINEL_INSN, -1} }, aarch64_linux_sigframe_init }; /* Register maps. */ static const struct regcache_map_entry aarch64_linux_gregmap[] = { { 31, AARCH64_X0_REGNUM, 8 }, /* x0 ... x30 */ { 1, AARCH64_SP_REGNUM, 8 }, { 1, AARCH64_PC_REGNUM, 8 }, { 1, AARCH64_CPSR_REGNUM, 8 }, { 0 } }; static const struct regcache_map_entry aarch64_linux_fpregmap[] = { { 32, AARCH64_V0_REGNUM, 16 }, /* v0 ... v31 */ { 1, AARCH64_FPSR_REGNUM, 4 }, { 1, AARCH64_FPCR_REGNUM, 4 }, { 0 } }; /* Register set definitions. */ const struct regset aarch64_linux_gregset = { aarch64_linux_gregmap, regcache_supply_regset, regcache_collect_regset }; const struct regset aarch64_linux_fpregset = { aarch64_linux_fpregmap, regcache_supply_regset, regcache_collect_regset }; /* Implement the "regset_from_core_section" gdbarch method. */ static void aarch64_linux_iterate_over_regset_sections (struct gdbarch *gdbarch, iterate_over_regset_sections_cb *cb, void *cb_data, const struct regcache *regcache) { cb (".reg", AARCH64_LINUX_SIZEOF_GREGSET, &aarch64_linux_gregset, NULL, cb_data); cb (".reg2", AARCH64_LINUX_SIZEOF_FPREGSET, &aarch64_linux_fpregset, NULL, cb_data); } /* Implementation of `gdbarch_stap_is_single_operand', as defined in gdbarch.h. */ static int aarch64_stap_is_single_operand (struct gdbarch *gdbarch, const char *s) { return (*s == '#' || isdigit (*s) /* Literal number. */ || *s == '[' /* Register indirection. */ || isalpha (*s)); /* Register value. */ } /* This routine is used to parse a special token in AArch64's assembly. The special tokens parsed by it are: - Register displacement (e.g, [fp, #-8]) It returns one if the special token has been parsed successfully, or zero if the current token is not considered special. */ static int aarch64_stap_parse_special_token (struct gdbarch *gdbarch, struct stap_parse_info *p) { if (*p->arg == '[') { /* Temporary holder for lookahead. */ const char *tmp = p->arg; char *endp; /* Used to save the register name. */ const char *start; char *regname; int len; int got_minus = 0; long displacement; struct stoken str; ++tmp; start = tmp; /* Register name. */ while (isalnum (*tmp)) ++tmp; if (*tmp != ',') return 0; len = tmp - start; regname = (char *) alloca (len + 2); strncpy (regname, start, len); regname[len] = '\0'; if (user_reg_map_name_to_regnum (gdbarch, regname, len) == -1) error (_("Invalid register name `%s' on expression `%s'."), regname, p->saved_arg); ++tmp; tmp = skip_spaces_const (tmp); /* Now we expect a number. It can begin with '#' or simply a digit. */ if (*tmp == '#') ++tmp; if (*tmp == '-') { ++tmp; got_minus = 1; } else if (*tmp == '+') ++tmp; if (!isdigit (*tmp)) return 0; displacement = strtol (tmp, &endp, 10); tmp = endp; /* Skipping last `]'. */ if (*tmp++ != ']') return 0; /* The displacement. */ write_exp_elt_opcode (&p->pstate, OP_LONG); write_exp_elt_type (&p->pstate, builtin_type (gdbarch)->builtin_long); write_exp_elt_longcst (&p->pstate, displacement); write_exp_elt_opcode (&p->pstate, OP_LONG); if (got_minus) write_exp_elt_opcode (&p->pstate, UNOP_NEG); /* The register name. */ write_exp_elt_opcode (&p->pstate, OP_REGISTER); str.ptr = regname; str.length = len; write_exp_string (&p->pstate, str); write_exp_elt_opcode (&p->pstate, OP_REGISTER); write_exp_elt_opcode (&p->pstate, BINOP_ADD); /* Casting to the expected type. */ write_exp_elt_opcode (&p->pstate, UNOP_CAST); write_exp_elt_type (&p->pstate, lookup_pointer_type (p->arg_type)); write_exp_elt_opcode (&p->pstate, UNOP_CAST); write_exp_elt_opcode (&p->pstate, UNOP_IND); p->arg = tmp; } else return 0; return 1; } /* Implement the "get_syscall_number" gdbarch method. */ static LONGEST aarch64_linux_get_syscall_number (struct gdbarch *gdbarch, ptid_t ptid) { struct regcache *regs = get_thread_regcache (ptid); enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); /* The content of register x8. */ gdb_byte buf[X_REGISTER_SIZE]; /* The result. */ LONGEST ret; /* Getting the system call number from the register x8. */ regcache_cooked_read (regs, AARCH64_DWARF_X0 + 8, buf); ret = extract_signed_integer (buf, X_REGISTER_SIZE, byte_order); return ret; } /* AArch64 process record-replay constructs: syscall, signal etc. */ struct linux_record_tdep aarch64_linux_record_tdep; /* Enum that defines the AArch64 linux specific syscall identifiers used for process record/replay. */ enum aarch64_syscall { aarch64_sys_io_setup = 0, aarch64_sys_io_destroy = 1, aarch64_sys_io_submit = 2, aarch64_sys_io_cancel = 3, aarch64_sys_io_getevents = 4, aarch64_sys_setxattr = 5, aarch64_sys_lsetxattr = 6, aarch64_sys_fsetxattr = 7, aarch64_sys_getxattr = 8, aarch64_sys_lgetxattr = 9, aarch64_sys_fgetxattr = 10, aarch64_sys_listxattr = 11, aarch64_sys_llistxattr = 12, aarch64_sys_flistxattr = 13, aarch64_sys_removexattr = 14, aarch64_sys_lremovexattr = 15, aarch64_sys_fremovexattr = 16, aarch64_sys_getcwd = 17, aarch64_sys_lookup_dcookie = 18, aarch64_sys_eventfd2 = 19, aarch64_sys_epoll_create1 = 20, aarch64_sys_epoll_ctl = 21, aarch64_sys_epoll_pwait = 22, aarch64_sys_dup = 23, aarch64_sys_dup3 = 24, aarch64_sys_fcntl = 25, aarch64_sys_inotify_init1 = 26, aarch64_sys_inotify_add_watch = 27, aarch64_sys_inotify_rm_watch = 28, aarch64_sys_ioctl = 29, aarch64_sys_ioprio_set = 30, aarch64_sys_ioprio_get = 31, aarch64_sys_flock = 32, aarch64_sys_mknodat = 33, aarch64_sys_mkdirat = 34, aarch64_sys_unlinkat = 35, aarch64_sys_symlinkat = 36, aarch64_sys_linkat = 37, aarch64_sys_renameat = 38, aarch64_sys_umount2 = 39, aarch64_sys_mount = 40, aarch64_sys_pivot_root = 41, aarch64_sys_nfsservctl = 42, aarch64_sys_statfs = 43, aarch64_sys_fstatfs = 44, aarch64_sys_truncate = 45, aarch64_sys_ftruncate = 46, aarch64_sys_fallocate = 47, aarch64_sys_faccessat = 48, aarch64_sys_chdir = 49, aarch64_sys_fchdir = 50, aarch64_sys_chroot = 51, aarch64_sys_fchmod = 52, aarch64_sys_fchmodat = 53, aarch64_sys_fchownat = 54, aarch64_sys_fchown = 55, aarch64_sys_openat = 56, aarch64_sys_close = 57, aarch64_sys_vhangup = 58, aarch64_sys_pipe2 = 59, aarch64_sys_quotactl = 60, aarch64_sys_getdents64 = 61, aarch64_sys_lseek = 62, aarch64_sys_read = 63, aarch64_sys_write = 64, aarch64_sys_readv = 65, aarch64_sys_writev = 66, aarch64_sys_pread64 = 67, aarch64_sys_pwrite64 = 68, aarch64_sys_preadv = 69, aarch64_sys_pwritev = 70, aarch64_sys_sendfile = 71, aarch64_sys_pselect6 = 72, aarch64_sys_ppoll = 73, aarch64_sys_signalfd4 = 74, aarch64_sys_vmsplice = 75, aarch64_sys_splice = 76, aarch64_sys_tee = 77, aarch64_sys_readlinkat = 78, aarch64_sys_newfstatat = 79, aarch64_sys_fstat = 80, aarch64_sys_sync = 81, aarch64_sys_fsync = 82, aarch64_sys_fdatasync = 83, aarch64_sys_sync_file_range2 = 84, aarch64_sys_sync_file_range = 84, aarch64_sys_timerfd_create = 85, aarch64_sys_timerfd_settime = 86, aarch64_sys_timerfd_gettime = 87, aarch64_sys_utimensat = 88, aarch64_sys_acct = 89, aarch64_sys_capget = 90, aarch64_sys_capset = 91, aarch64_sys_personality = 92, aarch64_sys_exit = 93, aarch64_sys_exit_group = 94, aarch64_sys_waitid = 95, aarch64_sys_set_tid_address = 96, aarch64_sys_unshare = 97, aarch64_sys_futex = 98, aarch64_sys_set_robust_list = 99, aarch64_sys_get_robust_list = 100, aarch64_sys_nanosleep = 101, aarch64_sys_getitimer = 102, aarch64_sys_setitimer = 103, aarch64_sys_kexec_load = 104, aarch64_sys_init_module = 105, aarch64_sys_delete_module = 106, aarch64_sys_timer_create = 107, aarch64_sys_timer_gettime = 108, aarch64_sys_timer_getoverrun = 109, aarch64_sys_timer_settime = 110, aarch64_sys_timer_delete = 111, aarch64_sys_clock_settime = 112, aarch64_sys_clock_gettime = 113, aarch64_sys_clock_getres = 114, aarch64_sys_clock_nanosleep = 115, aarch64_sys_syslog = 116, aarch64_sys_ptrace = 117, aarch64_sys_sched_setparam = 118, aarch64_sys_sched_setscheduler = 119, aarch64_sys_sched_getscheduler = 120, aarch64_sys_sched_getparam = 121, aarch64_sys_sched_setaffinity = 122, aarch64_sys_sched_getaffinity = 123, aarch64_sys_sched_yield = 124, aarch64_sys_sched_get_priority_max = 125, aarch64_sys_sched_get_priority_min = 126, aarch64_sys_sched_rr_get_interval = 127, aarch64_sys_kill = 129, aarch64_sys_tkill = 130, aarch64_sys_tgkill = 131, aarch64_sys_sigaltstack = 132, aarch64_sys_rt_sigsuspend = 133, aarch64_sys_rt_sigaction = 134, aarch64_sys_rt_sigprocmask = 135, aarch64_sys_rt_sigpending = 136, aarch64_sys_rt_sigtimedwait = 137, aarch64_sys_rt_sigqueueinfo = 138, aarch64_sys_rt_sigreturn = 139, aarch64_sys_setpriority = 140, aarch64_sys_getpriority = 141, aarch64_sys_reboot = 142, aarch64_sys_setregid = 143, aarch64_sys_setgid = 144, aarch64_sys_setreuid = 145, aarch64_sys_setuid = 146, aarch64_sys_setresuid = 147, aarch64_sys_getresuid = 148, aarch64_sys_setresgid = 149, aarch64_sys_getresgid = 150, aarch64_sys_setfsuid = 151, aarch64_sys_setfsgid = 152, aarch64_sys_times = 153, aarch64_sys_setpgid = 154, aarch64_sys_getpgid = 155, aarch64_sys_getsid = 156, aarch64_sys_setsid = 157, aarch64_sys_getgroups = 158, aarch64_sys_setgroups = 159, aarch64_sys_uname = 160, aarch64_sys_sethostname = 161, aarch64_sys_setdomainname = 162, aarch64_sys_getrlimit = 163, aarch64_sys_setrlimit = 164, aarch64_sys_getrusage = 165, aarch64_sys_umask = 166, aarch64_sys_prctl = 167, aarch64_sys_getcpu = 168, aarch64_sys_gettimeofday = 169, aarch64_sys_settimeofday = 170, aarch64_sys_adjtimex = 171, aarch64_sys_getpid = 172, aarch64_sys_getppid = 173, aarch64_sys_getuid = 174, aarch64_sys_geteuid = 175, aarch64_sys_getgid = 176, aarch64_sys_getegid = 177, aarch64_sys_gettid = 178, aarch64_sys_sysinfo = 179, aarch64_sys_mq_open = 180, aarch64_sys_mq_unlink = 181, aarch64_sys_mq_timedsend = 182, aarch64_sys_mq_timedreceive = 183, aarch64_sys_mq_notify = 184, aarch64_sys_mq_getsetattr = 185, aarch64_sys_msgget = 186, aarch64_sys_msgctl = 187, aarch64_sys_msgrcv = 188, aarch64_sys_msgsnd = 189, aarch64_sys_semget = 190, aarch64_sys_semctl = 191, aarch64_sys_semtimedop = 192, aarch64_sys_semop = 193, aarch64_sys_shmget = 194, aarch64_sys_shmctl = 195, aarch64_sys_shmat = 196, aarch64_sys_shmdt = 197, aarch64_sys_socket = 198, aarch64_sys_socketpair = 199, aarch64_sys_bind = 200, aarch64_sys_listen = 201, aarch64_sys_accept = 202, aarch64_sys_connect = 203, aarch64_sys_getsockname = 204, aarch64_sys_getpeername = 205, aarch64_sys_sendto = 206, aarch64_sys_recvfrom = 207, aarch64_sys_setsockopt = 208, aarch64_sys_getsockopt = 209, aarch64_sys_shutdown = 210, aarch64_sys_sendmsg = 211, aarch64_sys_recvmsg = 212, aarch64_sys_readahead = 213, aarch64_sys_brk = 214, aarch64_sys_munmap = 215, aarch64_sys_mremap = 216, aarch64_sys_add_key = 217, aarch64_sys_request_key = 218, aarch64_sys_keyctl = 219, aarch64_sys_clone = 220, aarch64_sys_execve = 221, aarch64_sys_mmap = 222, aarch64_sys_fadvise64 = 223, aarch64_sys_swapon = 224, aarch64_sys_swapoff = 225, aarch64_sys_mprotect = 226, aarch64_sys_msync = 227, aarch64_sys_mlock = 228, aarch64_sys_munlock = 229, aarch64_sys_mlockall = 230, aarch64_sys_munlockall = 231, aarch64_sys_mincore = 232, aarch64_sys_madvise = 233, aarch64_sys_remap_file_pages = 234, aarch64_sys_mbind = 235, aarch64_sys_get_mempolicy = 236, aarch64_sys_set_mempolicy = 237, aarch64_sys_migrate_pages = 238, aarch64_sys_move_pages = 239, aarch64_sys_rt_tgsigqueueinfo = 240, aarch64_sys_perf_event_open = 241, aarch64_sys_accept4 = 242, aarch64_sys_recvmmsg = 243, aarch64_sys_wait4 = 260, aarch64_sys_prlimit64 = 261, aarch64_sys_fanotify_init = 262, aarch64_sys_fanotify_mark = 263, aarch64_sys_name_to_handle_at = 264, aarch64_sys_open_by_handle_at = 265, aarch64_sys_clock_adjtime = 266, aarch64_sys_syncfs = 267, aarch64_sys_setns = 268, aarch64_sys_sendmmsg = 269, aarch64_sys_process_vm_readv = 270, aarch64_sys_process_vm_writev = 271, aarch64_sys_kcmp = 272, aarch64_sys_finit_module = 273, aarch64_sys_sched_setattr = 274, aarch64_sys_sched_getattr = 275, }; /* aarch64_canonicalize_syscall maps syscall ids from the native AArch64 linux set of syscall ids into a canonical set of syscall ids used by process record. */ static enum gdb_syscall aarch64_canonicalize_syscall (enum aarch64_syscall syscall_number) { #define SYSCALL_MAP(SYSCALL) case aarch64_sys_##SYSCALL: \ return gdb_sys_##SYSCALL #define UNSUPPORTED_SYSCALL_MAP(SYSCALL) case aarch64_sys_##SYSCALL: \ return gdb_sys_no_syscall switch (syscall_number) { SYSCALL_MAP (io_setup); SYSCALL_MAP (io_destroy); SYSCALL_MAP (io_submit); SYSCALL_MAP (io_cancel); SYSCALL_MAP (io_getevents); SYSCALL_MAP (setxattr); SYSCALL_MAP (lsetxattr); SYSCALL_MAP (fsetxattr); SYSCALL_MAP (getxattr); SYSCALL_MAP (lgetxattr); SYSCALL_MAP (fgetxattr); SYSCALL_MAP (listxattr); SYSCALL_MAP (llistxattr); SYSCALL_MAP (flistxattr); SYSCALL_MAP (removexattr); SYSCALL_MAP (lremovexattr); SYSCALL_MAP (fremovexattr); SYSCALL_MAP (getcwd); SYSCALL_MAP (lookup_dcookie); SYSCALL_MAP (eventfd2); SYSCALL_MAP (epoll_create1); SYSCALL_MAP (epoll_ctl); SYSCALL_MAP (epoll_pwait); SYSCALL_MAP (dup); SYSCALL_MAP (dup3); SYSCALL_MAP (fcntl); SYSCALL_MAP (inotify_init1); SYSCALL_MAP (inotify_add_watch); SYSCALL_MAP (inotify_rm_watch); SYSCALL_MAP (ioctl); SYSCALL_MAP (ioprio_set); SYSCALL_MAP (ioprio_get); SYSCALL_MAP (flock); SYSCALL_MAP (mknodat); SYSCALL_MAP (mkdirat); SYSCALL_MAP (unlinkat); SYSCALL_MAP (symlinkat); SYSCALL_MAP (linkat); SYSCALL_MAP (renameat); UNSUPPORTED_SYSCALL_MAP (umount2); SYSCALL_MAP (mount); SYSCALL_MAP (pivot_root); SYSCALL_MAP (nfsservctl); SYSCALL_MAP (statfs); SYSCALL_MAP (truncate); SYSCALL_MAP (ftruncate); SYSCALL_MAP (fallocate); SYSCALL_MAP (faccessat); SYSCALL_MAP (fchdir); SYSCALL_MAP (chroot); SYSCALL_MAP (fchmod); SYSCALL_MAP (fchmodat); SYSCALL_MAP (fchownat); SYSCALL_MAP (fchown); SYSCALL_MAP (openat); SYSCALL_MAP (close); SYSCALL_MAP (vhangup); SYSCALL_MAP (pipe2); SYSCALL_MAP (quotactl); SYSCALL_MAP (getdents64); SYSCALL_MAP (lseek); SYSCALL_MAP (read); SYSCALL_MAP (write); SYSCALL_MAP (readv); SYSCALL_MAP (writev); SYSCALL_MAP (pread64); SYSCALL_MAP (pwrite64); UNSUPPORTED_SYSCALL_MAP (preadv); UNSUPPORTED_SYSCALL_MAP (pwritev); SYSCALL_MAP (sendfile); SYSCALL_MAP (pselect6); SYSCALL_MAP (ppoll); UNSUPPORTED_SYSCALL_MAP (signalfd4); SYSCALL_MAP (vmsplice); SYSCALL_MAP (splice); SYSCALL_MAP (tee); SYSCALL_MAP (readlinkat); SYSCALL_MAP (newfstatat); SYSCALL_MAP (fstat); SYSCALL_MAP (sync); SYSCALL_MAP (fsync); SYSCALL_MAP (fdatasync); SYSCALL_MAP (sync_file_range); UNSUPPORTED_SYSCALL_MAP (timerfd_create); UNSUPPORTED_SYSCALL_MAP (timerfd_settime); UNSUPPORTED_SYSCALL_MAP (timerfd_gettime); UNSUPPORTED_SYSCALL_MAP (utimensat); SYSCALL_MAP (acct); SYSCALL_MAP (capget); SYSCALL_MAP (capset); SYSCALL_MAP (personality); SYSCALL_MAP (exit); SYSCALL_MAP (exit_group); SYSCALL_MAP (waitid); SYSCALL_MAP (set_tid_address); SYSCALL_MAP (unshare); SYSCALL_MAP (futex); SYSCALL_MAP (set_robust_list); SYSCALL_MAP (get_robust_list); SYSCALL_MAP (nanosleep); SYSCALL_MAP (getitimer); SYSCALL_MAP (setitimer); SYSCALL_MAP (kexec_load); SYSCALL_MAP (init_module); SYSCALL_MAP (delete_module); SYSCALL_MAP (timer_create); SYSCALL_MAP (timer_settime); SYSCALL_MAP (timer_gettime); SYSCALL_MAP (timer_getoverrun); SYSCALL_MAP (timer_delete); SYSCALL_MAP (clock_settime); SYSCALL_MAP (clock_gettime); SYSCALL_MAP (clock_getres); SYSCALL_MAP (clock_nanosleep); SYSCALL_MAP (syslog); SYSCALL_MAP (ptrace); SYSCALL_MAP (sched_setparam); SYSCALL_MAP (sched_setscheduler); SYSCALL_MAP (sched_getscheduler); SYSCALL_MAP (sched_getparam); SYSCALL_MAP (sched_setaffinity); SYSCALL_MAP (sched_getaffinity); SYSCALL_MAP (sched_yield); SYSCALL_MAP (sched_get_priority_max); SYSCALL_MAP (sched_get_priority_min); SYSCALL_MAP (sched_rr_get_interval); SYSCALL_MAP (kill); SYSCALL_MAP (tkill); SYSCALL_MAP (tgkill); SYSCALL_MAP (sigaltstack); SYSCALL_MAP (rt_sigsuspend); SYSCALL_MAP (rt_sigaction); SYSCALL_MAP (rt_sigprocmask); SYSCALL_MAP (rt_sigpending); SYSCALL_MAP (rt_sigtimedwait); SYSCALL_MAP (rt_sigqueueinfo); SYSCALL_MAP (rt_sigreturn); SYSCALL_MAP (setpriority); SYSCALL_MAP (getpriority); SYSCALL_MAP (reboot); SYSCALL_MAP (setregid); SYSCALL_MAP (setgid); SYSCALL_MAP (setreuid); SYSCALL_MAP (setuid); SYSCALL_MAP (setresuid); SYSCALL_MAP (getresuid); SYSCALL_MAP (setresgid); SYSCALL_MAP (getresgid); SYSCALL_MAP (setfsuid); SYSCALL_MAP (setfsgid); SYSCALL_MAP (times); SYSCALL_MAP (setpgid); SYSCALL_MAP (getpgid); SYSCALL_MAP (getsid); SYSCALL_MAP (setsid); SYSCALL_MAP (getgroups); SYSCALL_MAP (setgroups); SYSCALL_MAP (uname); SYSCALL_MAP (sethostname); SYSCALL_MAP (setdomainname); SYSCALL_MAP (getrlimit); SYSCALL_MAP (setrlimit); SYSCALL_MAP (getrusage); SYSCALL_MAP (umask); SYSCALL_MAP (prctl); SYSCALL_MAP (getcpu); SYSCALL_MAP (gettimeofday); SYSCALL_MAP (settimeofday); SYSCALL_MAP (adjtimex); SYSCALL_MAP (getpid); SYSCALL_MAP (getppid); SYSCALL_MAP (getuid); SYSCALL_MAP (geteuid); SYSCALL_MAP (getgid); SYSCALL_MAP (getegid); SYSCALL_MAP (gettid); SYSCALL_MAP (sysinfo); SYSCALL_MAP (mq_open); SYSCALL_MAP (mq_unlink); SYSCALL_MAP (mq_timedsend); SYSCALL_MAP (mq_timedreceive); SYSCALL_MAP (mq_notify); SYSCALL_MAP (mq_getsetattr); SYSCALL_MAP (msgget); SYSCALL_MAP (msgctl); SYSCALL_MAP (msgrcv); SYSCALL_MAP (msgsnd); SYSCALL_MAP (semget); SYSCALL_MAP (semctl); SYSCALL_MAP (semtimedop); SYSCALL_MAP (semop); SYSCALL_MAP (shmget); SYSCALL_MAP (shmctl); SYSCALL_MAP (shmat); SYSCALL_MAP (shmdt); SYSCALL_MAP (socket); SYSCALL_MAP (socketpair); SYSCALL_MAP (bind); SYSCALL_MAP (listen); SYSCALL_MAP (accept); SYSCALL_MAP (connect); SYSCALL_MAP (getsockname); SYSCALL_MAP (getpeername); SYSCALL_MAP (sendto); SYSCALL_MAP (recvfrom); SYSCALL_MAP (setsockopt); SYSCALL_MAP (getsockopt); SYSCALL_MAP (shutdown); SYSCALL_MAP (sendmsg); SYSCALL_MAP (recvmsg); SYSCALL_MAP (readahead); SYSCALL_MAP (brk); SYSCALL_MAP (munmap); SYSCALL_MAP (mremap); SYSCALL_MAP (add_key); SYSCALL_MAP (request_key); SYSCALL_MAP (keyctl); SYSCALL_MAP (clone); SYSCALL_MAP (execve); case aarch64_sys_mmap: return gdb_sys_mmap2; SYSCALL_MAP (fadvise64); SYSCALL_MAP (swapon); SYSCALL_MAP (swapoff); SYSCALL_MAP (mprotect); SYSCALL_MAP (msync); SYSCALL_MAP (mlock); SYSCALL_MAP (munlock); SYSCALL_MAP (mlockall); SYSCALL_MAP (munlockall); SYSCALL_MAP (mincore); SYSCALL_MAP (madvise); SYSCALL_MAP (remap_file_pages); SYSCALL_MAP (mbind); SYSCALL_MAP (get_mempolicy); SYSCALL_MAP (set_mempolicy); SYSCALL_MAP (migrate_pages); SYSCALL_MAP (move_pages); UNSUPPORTED_SYSCALL_MAP (rt_tgsigqueueinfo); UNSUPPORTED_SYSCALL_MAP (perf_event_open); UNSUPPORTED_SYSCALL_MAP (accept4); UNSUPPORTED_SYSCALL_MAP (recvmmsg); SYSCALL_MAP (wait4); UNSUPPORTED_SYSCALL_MAP (prlimit64); UNSUPPORTED_SYSCALL_MAP (fanotify_init); UNSUPPORTED_SYSCALL_MAP (fanotify_mark); UNSUPPORTED_SYSCALL_MAP (name_to_handle_at); UNSUPPORTED_SYSCALL_MAP (open_by_handle_at); UNSUPPORTED_SYSCALL_MAP (clock_adjtime); UNSUPPORTED_SYSCALL_MAP (syncfs); UNSUPPORTED_SYSCALL_MAP (setns); UNSUPPORTED_SYSCALL_MAP (sendmmsg); UNSUPPORTED_SYSCALL_MAP (process_vm_readv); UNSUPPORTED_SYSCALL_MAP (process_vm_writev); UNSUPPORTED_SYSCALL_MAP (kcmp); UNSUPPORTED_SYSCALL_MAP (finit_module); UNSUPPORTED_SYSCALL_MAP (sched_setattr); UNSUPPORTED_SYSCALL_MAP (sched_getattr); default: return gdb_sys_no_syscall; } } /* Record all registers but PC register for process-record. */ static int aarch64_all_but_pc_registers_record (struct regcache *regcache) { int i; for (i = AARCH64_X0_REGNUM; i < AARCH64_PC_REGNUM; i++) if (record_full_arch_list_add_reg (regcache, i)) return -1; if (record_full_arch_list_add_reg (regcache, AARCH64_CPSR_REGNUM)) return -1; return 0; } /* Handler for aarch64 system call instruction recording. */ static int aarch64_linux_syscall_record (struct regcache *regcache, unsigned long svc_number) { int ret = 0; enum gdb_syscall syscall_gdb; syscall_gdb = aarch64_canonicalize_syscall ((enum aarch64_syscall) svc_number); if (syscall_gdb < 0) { printf_unfiltered (_("Process record and replay target doesn't " "support syscall number %s\n"), plongest (svc_number)); return -1; } if (syscall_gdb == gdb_sys_sigreturn || syscall_gdb == gdb_sys_rt_sigreturn) { if (aarch64_all_but_pc_registers_record (regcache)) return -1; return 0; } ret = record_linux_system_call (syscall_gdb, regcache, &aarch64_linux_record_tdep); if (ret != 0) return ret; /* Record the return value of the system call. */ if (record_full_arch_list_add_reg (regcache, AARCH64_X0_REGNUM)) return -1; /* Record LR. */ if (record_full_arch_list_add_reg (regcache, AARCH64_LR_REGNUM)) return -1; /* Record CPSR. */ if (record_full_arch_list_add_reg (regcache, AARCH64_CPSR_REGNUM)) return -1; return 0; } static void aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { static const char *const stap_integer_prefixes[] = { "#", "", NULL }; static const char *const stap_register_prefixes[] = { "", NULL }; static const char *const stap_register_indirection_prefixes[] = { "[", NULL }; static const char *const stap_register_indirection_suffixes[] = { "]", NULL }; struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); tdep->lowest_pc = 0x8000; linux_init_abi (info, gdbarch); set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_lp64_fetch_link_map_offsets); /* Enable TLS support. */ set_gdbarch_fetch_tls_load_module_address (gdbarch, svr4_fetch_objfile_link_map); /* Shared library handling. */ set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target); set_gdbarch_skip_solib_resolver (gdbarch, glibc_skip_solib_resolver); tramp_frame_prepend_unwinder (gdbarch, &aarch64_linux_rt_sigframe); /* Enable longjmp. */ tdep->jb_pc = 11; set_gdbarch_iterate_over_regset_sections (gdbarch, aarch64_linux_iterate_over_regset_sections); /* SystemTap related. */ set_gdbarch_stap_integer_prefixes (gdbarch, stap_integer_prefixes); set_gdbarch_stap_register_prefixes (gdbarch, stap_register_prefixes); set_gdbarch_stap_register_indirection_prefixes (gdbarch, stap_register_indirection_prefixes); set_gdbarch_stap_register_indirection_suffixes (gdbarch, stap_register_indirection_suffixes); set_gdbarch_stap_is_single_operand (gdbarch, aarch64_stap_is_single_operand); set_gdbarch_stap_parse_special_token (gdbarch, aarch64_stap_parse_special_token); /* Reversible debugging, process record. */ set_gdbarch_process_record (gdbarch, aarch64_process_record); /* Syscall record. */ tdep->aarch64_syscall_record = aarch64_linux_syscall_record; /* Initialize the aarch64_linux_record_tdep. */ /* These values are the size of the type that will be used in a system call. They are obtained from Linux Kernel source. */ aarch64_linux_record_tdep.size_pointer = gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT; aarch64_linux_record_tdep.size__old_kernel_stat = 32; aarch64_linux_record_tdep.size_tms = 32; aarch64_linux_record_tdep.size_loff_t = 8; aarch64_linux_record_tdep.size_flock = 32; aarch64_linux_record_tdep.size_oldold_utsname = 45; aarch64_linux_record_tdep.size_ustat = 32; aarch64_linux_record_tdep.size_old_sigaction = 32; aarch64_linux_record_tdep.size_old_sigset_t = 8; aarch64_linux_record_tdep.size_rlimit = 16; aarch64_linux_record_tdep.size_rusage = 144; aarch64_linux_record_tdep.size_timeval = 16; aarch64_linux_record_tdep.size_timezone = 8; aarch64_linux_record_tdep.size_old_gid_t = 2; aarch64_linux_record_tdep.size_old_uid_t = 2; aarch64_linux_record_tdep.size_fd_set = 128; aarch64_linux_record_tdep.size_old_dirent = 280; aarch64_linux_record_tdep.size_statfs = 120; aarch64_linux_record_tdep.size_statfs64 = 120; aarch64_linux_record_tdep.size_sockaddr = 16; aarch64_linux_record_tdep.size_int = gdbarch_int_bit (gdbarch) / TARGET_CHAR_BIT; aarch64_linux_record_tdep.size_long = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; aarch64_linux_record_tdep.size_ulong = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; aarch64_linux_record_tdep.size_msghdr = 56; aarch64_linux_record_tdep.size_itimerval = 32; aarch64_linux_record_tdep.size_stat = 144; aarch64_linux_record_tdep.size_old_utsname = 325; aarch64_linux_record_tdep.size_sysinfo = 112; aarch64_linux_record_tdep.size_msqid_ds = 120; aarch64_linux_record_tdep.size_shmid_ds = 112; aarch64_linux_record_tdep.size_new_utsname = 390; aarch64_linux_record_tdep.size_timex = 208; aarch64_linux_record_tdep.size_mem_dqinfo = 24; aarch64_linux_record_tdep.size_if_dqblk = 72; aarch64_linux_record_tdep.size_fs_quota_stat = 80; aarch64_linux_record_tdep.size_timespec = 16; aarch64_linux_record_tdep.size_pollfd = 8; aarch64_linux_record_tdep.size_NFS_FHSIZE = 32; aarch64_linux_record_tdep.size_knfsd_fh = 132; aarch64_linux_record_tdep.size_TASK_COMM_LEN = 16; aarch64_linux_record_tdep.size_sigaction = 32; aarch64_linux_record_tdep.size_sigset_t = 8; aarch64_linux_record_tdep.size_siginfo_t = 128; aarch64_linux_record_tdep.size_cap_user_data_t = 8; aarch64_linux_record_tdep.size_stack_t = 24; aarch64_linux_record_tdep.size_off_t = 8; aarch64_linux_record_tdep.size_stat64 = 144; aarch64_linux_record_tdep.size_gid_t = 4; aarch64_linux_record_tdep.size_uid_t = 4; aarch64_linux_record_tdep.size_PAGE_SIZE = 4096; aarch64_linux_record_tdep.size_flock64 = 32; aarch64_linux_record_tdep.size_user_desc = 16; aarch64_linux_record_tdep.size_io_event = 32; aarch64_linux_record_tdep.size_iocb = 64; aarch64_linux_record_tdep.size_epoll_event = 12; aarch64_linux_record_tdep.size_itimerspec = 32; aarch64_linux_record_tdep.size_mq_attr = 64; aarch64_linux_record_tdep.size_termios = 36; aarch64_linux_record_tdep.size_termios2 = 44; aarch64_linux_record_tdep.size_pid_t = 4; aarch64_linux_record_tdep.size_winsize = 8; aarch64_linux_record_tdep.size_serial_struct = 72; aarch64_linux_record_tdep.size_serial_icounter_struct = 80; aarch64_linux_record_tdep.size_hayes_esp_config = 12; aarch64_linux_record_tdep.size_size_t = 8; aarch64_linux_record_tdep.size_iovec = 16; aarch64_linux_record_tdep.size_time_t = 8; /* These values are the second argument of system call "sys_ioctl". They are obtained from Linux Kernel source. */ aarch64_linux_record_tdep.ioctl_TCGETS = 0x5401; aarch64_linux_record_tdep.ioctl_TCSETS = 0x5402; aarch64_linux_record_tdep.ioctl_TCSETSW = 0x5403; aarch64_linux_record_tdep.ioctl_TCSETSF = 0x5404; aarch64_linux_record_tdep.ioctl_TCGETA = 0x5405; aarch64_linux_record_tdep.ioctl_TCSETA = 0x5406; aarch64_linux_record_tdep.ioctl_TCSETAW = 0x5407; aarch64_linux_record_tdep.ioctl_TCSETAF = 0x5408; aarch64_linux_record_tdep.ioctl_TCSBRK = 0x5409; aarch64_linux_record_tdep.ioctl_TCXONC = 0x540a; aarch64_linux_record_tdep.ioctl_TCFLSH = 0x540b; aarch64_linux_record_tdep.ioctl_TIOCEXCL = 0x540c; aarch64_linux_record_tdep.ioctl_TIOCNXCL = 0x540d; aarch64_linux_record_tdep.ioctl_TIOCSCTTY = 0x540e; aarch64_linux_record_tdep.ioctl_TIOCGPGRP = 0x540f; aarch64_linux_record_tdep.ioctl_TIOCSPGRP = 0x5410; aarch64_linux_record_tdep.ioctl_TIOCOUTQ = 0x5411; aarch64_linux_record_tdep.ioctl_TIOCSTI = 0x5412; aarch64_linux_record_tdep.ioctl_TIOCGWINSZ = 0x5413; aarch64_linux_record_tdep.ioctl_TIOCSWINSZ = 0x5414; aarch64_linux_record_tdep.ioctl_TIOCMGET = 0x5415; aarch64_linux_record_tdep.ioctl_TIOCMBIS = 0x5416; aarch64_linux_record_tdep.ioctl_TIOCMBIC = 0x5417; aarch64_linux_record_tdep.ioctl_TIOCMSET = 0x5418; aarch64_linux_record_tdep.ioctl_TIOCGSOFTCAR = 0x5419; aarch64_linux_record_tdep.ioctl_TIOCSSOFTCAR = 0x541a; aarch64_linux_record_tdep.ioctl_FIONREAD = 0x541b; aarch64_linux_record_tdep.ioctl_TIOCINQ = 0x541b; aarch64_linux_record_tdep.ioctl_TIOCLINUX = 0x541c; aarch64_linux_record_tdep.ioctl_TIOCCONS = 0x541d; aarch64_linux_record_tdep.ioctl_TIOCGSERIAL = 0x541e; aarch64_linux_record_tdep.ioctl_TIOCSSERIAL = 0x541f; aarch64_linux_record_tdep.ioctl_TIOCPKT = 0x5420; aarch64_linux_record_tdep.ioctl_FIONBIO = 0x5421; aarch64_linux_record_tdep.ioctl_TIOCNOTTY = 0x5422; aarch64_linux_record_tdep.ioctl_TIOCSETD = 0x5423; aarch64_linux_record_tdep.ioctl_TIOCGETD = 0x5424; aarch64_linux_record_tdep.ioctl_TCSBRKP = 0x5425; aarch64_linux_record_tdep.ioctl_TIOCTTYGSTRUCT = 0x5426; aarch64_linux_record_tdep.ioctl_TIOCSBRK = 0x5427; aarch64_linux_record_tdep.ioctl_TIOCCBRK = 0x5428; aarch64_linux_record_tdep.ioctl_TIOCGSID = 0x5429; aarch64_linux_record_tdep.ioctl_TCGETS2 = 0x802c542a; aarch64_linux_record_tdep.ioctl_TCSETS2 = 0x402c542b; aarch64_linux_record_tdep.ioctl_TCSETSW2 = 0x402c542c; aarch64_linux_record_tdep.ioctl_TCSETSF2 = 0x402c542d; aarch64_linux_record_tdep.ioctl_TIOCGPTN = 0x80045430; aarch64_linux_record_tdep.ioctl_TIOCSPTLCK = 0x40045431; aarch64_linux_record_tdep.ioctl_FIONCLEX = 0x5450; aarch64_linux_record_tdep.ioctl_FIOCLEX = 0x5451; aarch64_linux_record_tdep.ioctl_FIOASYNC = 0x5452; aarch64_linux_record_tdep.ioctl_TIOCSERCONFIG = 0x5453; aarch64_linux_record_tdep.ioctl_TIOCSERGWILD = 0x5454; aarch64_linux_record_tdep.ioctl_TIOCSERSWILD = 0x5455; aarch64_linux_record_tdep.ioctl_TIOCGLCKTRMIOS = 0x5456; aarch64_linux_record_tdep.ioctl_TIOCSLCKTRMIOS = 0x5457; aarch64_linux_record_tdep.ioctl_TIOCSERGSTRUCT = 0x5458; aarch64_linux_record_tdep.ioctl_TIOCSERGETLSR = 0x5459; aarch64_linux_record_tdep.ioctl_TIOCSERGETMULTI = 0x545a; aarch64_linux_record_tdep.ioctl_TIOCSERSETMULTI = 0x545b; aarch64_linux_record_tdep.ioctl_TIOCMIWAIT = 0x545c; aarch64_linux_record_tdep.ioctl_TIOCGICOUNT = 0x545d; aarch64_linux_record_tdep.ioctl_TIOCGHAYESESP = 0x545e; aarch64_linux_record_tdep.ioctl_TIOCSHAYESESP = 0x545f; aarch64_linux_record_tdep.ioctl_FIOQSIZE = 0x5460; /* These values are the second argument of system call "sys_fcntl" and "sys_fcntl64". They are obtained from Linux Kernel source. */ aarch64_linux_record_tdep.fcntl_F_GETLK = 5; aarch64_linux_record_tdep.fcntl_F_GETLK64 = 12; aarch64_linux_record_tdep.fcntl_F_SETLK64 = 13; aarch64_linux_record_tdep.fcntl_F_SETLKW64 = 14; /* The AArch64 syscall calling convention: reg x0-x6 for arguments, reg x8 for syscall number and return value in reg x0. */ aarch64_linux_record_tdep.arg1 = AARCH64_X0_REGNUM + 0; aarch64_linux_record_tdep.arg2 = AARCH64_X0_REGNUM + 1; aarch64_linux_record_tdep.arg3 = AARCH64_X0_REGNUM + 2; aarch64_linux_record_tdep.arg4 = AARCH64_X0_REGNUM + 3; aarch64_linux_record_tdep.arg5 = AARCH64_X0_REGNUM + 4; aarch64_linux_record_tdep.arg6 = AARCH64_X0_REGNUM + 5; aarch64_linux_record_tdep.arg7 = AARCH64_X0_REGNUM + 6; /* `catch syscall' */ set_xml_syscall_file_name (gdbarch, "syscalls/aarch64-linux.xml"); set_gdbarch_get_syscall_number (gdbarch, aarch64_linux_get_syscall_number); /* Displaced stepping. */ set_gdbarch_max_insn_length (gdbarch, 4 * DISPLACED_MODIFIED_INSNS); set_gdbarch_displaced_step_copy_insn (gdbarch, aarch64_displaced_step_copy_insn); set_gdbarch_displaced_step_fixup (gdbarch, aarch64_displaced_step_fixup); set_gdbarch_displaced_step_free_closure (gdbarch, simple_displaced_step_free_closure); set_gdbarch_displaced_step_location (gdbarch, linux_displaced_step_location); set_gdbarch_displaced_step_hw_singlestep (gdbarch, aarch64_displaced_step_hw_singlestep); } /* Provide a prototype to silence -Wmissing-prototypes. */ extern initialize_file_ftype _initialize_aarch64_linux_tdep; void _initialize_aarch64_linux_tdep (void) { gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_LINUX, aarch64_linux_init_abi); }