+ /* Set IS_THUMB according the CPSR saved on the stack. */
+ cpsr = read_memory_unsigned_integer (sp + pc_offset + 4, 4, byte_order);
+ *is_thumb = ((cpsr & arm_psr_thumb_bit (gdbarch)) != 0);
+
+ return next_pc;
+}
+
+/* At a ptrace syscall-stop, return the syscall number. This either
+ comes from the SWI instruction (OABI) or from r7 (EABI).
+
+ When the function fails, it should return -1. */
+
+static LONGEST
+arm_linux_get_syscall_number (struct gdbarch *gdbarch,
+ thread_info *thread)
+{
+ struct regcache *regs = get_thread_regcache (thread);
+
+ ULONGEST pc;
+ ULONGEST cpsr;
+ ULONGEST t_bit = arm_psr_thumb_bit (gdbarch);
+ int is_thumb;
+ ULONGEST svc_number = -1;
+
+ regcache_cooked_read_unsigned (regs, ARM_PC_REGNUM, &pc);
+ regcache_cooked_read_unsigned (regs, ARM_PS_REGNUM, &cpsr);
+ is_thumb = (cpsr & t_bit) != 0;
+
+ if (is_thumb)
+ {
+ regcache_cooked_read_unsigned (regs, 7, &svc_number);
+ }
+ else
+ {
+ enum bfd_endian byte_order_for_code =
+ gdbarch_byte_order_for_code (gdbarch);
+
+ /* PC gets incremented before the syscall-stop, so read the
+ previous instruction. */
+ unsigned long this_instr =
+ read_memory_unsigned_integer (pc - 4, 4, byte_order_for_code);
+
+ unsigned long svc_operand = (0x00ffffff & this_instr);
+
+ if (svc_operand)
+ {
+ /* OABI */
+ svc_number = svc_operand - 0x900000;
+ }
+ else
+ {
+ /* EABI */
+ regcache_cooked_read_unsigned (regs, 7, &svc_number);
+ }
+ }
+
+ return svc_number;
+}
+
+static CORE_ADDR
+arm_linux_get_next_pcs_syscall_next_pc (struct arm_get_next_pcs *self)
+{
+ CORE_ADDR next_pc = 0;
+ CORE_ADDR pc = regcache_read_pc (self->regcache);
+ int is_thumb = arm_is_thumb (self->regcache);
+ ULONGEST svc_number = 0;
+
+ if (is_thumb)
+ {
+ svc_number = regcache_raw_get_unsigned (self->regcache, 7);
+ next_pc = pc + 2;
+ }
+ else
+ {
+ struct gdbarch *gdbarch = self->regcache->arch ();
+ enum bfd_endian byte_order_for_code =
+ gdbarch_byte_order_for_code (gdbarch);
+ unsigned long this_instr =
+ read_memory_unsigned_integer (pc, 4, byte_order_for_code);
+
+ unsigned long svc_operand = (0x00ffffff & this_instr);
+ if (svc_operand) /* OABI. */
+ {
+ svc_number = svc_operand - 0x900000;
+ }
+ else /* EABI. */
+ {
+ svc_number = regcache_raw_get_unsigned (self->regcache, 7);
+ }
+
+ next_pc = pc + 4;
+ }
+
+ if (svc_number == ARM_SIGRETURN || svc_number == ARM_RT_SIGRETURN)
+ {
+ /* SIGRETURN or RT_SIGRETURN may affect the arm thumb mode, so
+ update IS_THUMB. */
+ next_pc = arm_linux_sigreturn_next_pc (self->regcache, svc_number,
+ &is_thumb);
+ }
+
+ /* Addresses for calling Thumb functions have the bit 0 set. */
+ if (is_thumb)
+ next_pc = MAKE_THUMB_ADDR (next_pc);
+
+ return next_pc;
+}
+
+
+/* Insert a single step breakpoint at the next executed instruction. */
+
+static std::vector<CORE_ADDR>
+arm_linux_software_single_step (struct regcache *regcache)
+{
+ struct gdbarch *gdbarch = regcache->arch ();
+ struct arm_get_next_pcs next_pcs_ctx;
+
+ /* If the target does have hardware single step, GDB doesn't have
+ to bother software single step. */
+ if (target_can_do_single_step () == 1)
+ return {};
+
+ arm_get_next_pcs_ctor (&next_pcs_ctx,
+ &arm_linux_get_next_pcs_ops,
+ gdbarch_byte_order (gdbarch),
+ gdbarch_byte_order_for_code (gdbarch),
+ 1,
+ regcache);
+
+ std::vector<CORE_ADDR> next_pcs = arm_get_next_pcs (&next_pcs_ctx);
+
+ for (CORE_ADDR &pc_ref : next_pcs)
+ pc_ref = gdbarch_addr_bits_remove (gdbarch, pc_ref);
+
+ return next_pcs;
+}
+
+/* Support for displaced stepping of Linux SVC instructions. */
+
+static void
+arm_linux_cleanup_svc (struct gdbarch *gdbarch,
+ struct regcache *regs,
+ arm_displaced_step_closure *dsc)
+{
+ ULONGEST apparent_pc;
+ int within_scratch;
+
+ regcache_cooked_read_unsigned (regs, ARM_PC_REGNUM, &apparent_pc);
+
+ within_scratch = (apparent_pc >= dsc->scratch_base
+ && apparent_pc < (dsc->scratch_base
+ + ARM_DISPLACED_MODIFIED_INSNS * 4 + 4));
+
+ if (debug_displaced)
+ {
+ fprintf_unfiltered (gdb_stdlog, "displaced: PC is apparently %.8lx after "
+ "SVC step ", (unsigned long) apparent_pc);
+ if (within_scratch)
+ fprintf_unfiltered (gdb_stdlog, "(within scratch space)\n");
+ else
+ fprintf_unfiltered (gdb_stdlog, "(outside scratch space)\n");
+ }
+
+ if (within_scratch)
+ displaced_write_reg (regs, dsc, ARM_PC_REGNUM,
+ dsc->insn_addr + dsc->insn_size, BRANCH_WRITE_PC);
+}
+
+static int
+arm_linux_copy_svc (struct gdbarch *gdbarch, struct regcache *regs,
+ arm_displaced_step_closure *dsc)
+{
+ CORE_ADDR return_to = 0;
+
+ struct frame_info *frame;
+ unsigned int svc_number = displaced_read_reg (regs, dsc, 7);
+ int is_sigreturn = 0;
+ int is_thumb;
+
+ frame = get_current_frame ();
+
+ is_sigreturn = arm_linux_sigreturn_return_addr(frame, svc_number,
+ &return_to, &is_thumb);
+ if (is_sigreturn)
+ {
+ struct symtab_and_line sal;
+
+ if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog, "displaced: found "
+ "sigreturn/rt_sigreturn SVC call. PC in "
+ "frame = %lx\n",
+ (unsigned long) get_frame_pc (frame));
+
+ if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog, "displaced: unwind pc = %lx. "
+ "Setting momentary breakpoint.\n",
+ (unsigned long) return_to);
+
+ gdb_assert (inferior_thread ()->control.step_resume_breakpoint
+ == NULL);
+
+ sal = find_pc_line (return_to, 0);
+ sal.pc = return_to;
+ sal.section = find_pc_overlay (return_to);
+ sal.explicit_pc = 1;
+
+ frame = get_prev_frame (frame);
+
+ if (frame)
+ {
+ inferior_thread ()->control.step_resume_breakpoint
+ = set_momentary_breakpoint (gdbarch, sal, get_frame_id (frame),
+ bp_step_resume).release ();
+
+ /* set_momentary_breakpoint invalidates FRAME. */
+ frame = NULL;
+
+ /* We need to make sure we actually insert the momentary
+ breakpoint set above. */
+ insert_breakpoints ();
+ }
+ else if (debug_displaced)
+ fprintf_unfiltered (gdb_stderr, "displaced: couldn't find previous "
+ "frame to set momentary breakpoint for "
+ "sigreturn/rt_sigreturn\n");
+ }
+ else if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog, "displaced: found SVC call\n");
+
+ /* Preparation: If we detect sigreturn, set momentary breakpoint at resume
+ location, else nothing.
+ Insn: unmodified svc.
+ Cleanup: if pc lands in scratch space, pc <- insn_addr + insn_size
+ else leave pc alone. */
+
+
+ dsc->cleanup = &arm_linux_cleanup_svc;
+ /* Pretend we wrote to the PC, so cleanup doesn't set PC to the next
+ instruction. */
+ dsc->wrote_to_pc = 1;
+
+ return 0;
+}
+
+
+/* The following two functions implement single-stepping over calls to Linux
+ kernel helper routines, which perform e.g. atomic operations on architecture
+ variants which don't support them natively.
+
+ When this function is called, the PC will be pointing at the kernel helper
+ (at an address inaccessible to GDB), and r14 will point to the return
+ address. Displaced stepping always executes code in the copy area:
+ so, make the copy-area instruction branch back to the kernel helper (the
+ "from" address), and make r14 point to the breakpoint in the copy area. In
+ that way, we regain control once the kernel helper returns, and can clean
+ up appropriately (as if we had just returned from the kernel helper as it
+ would have been called from the non-displaced location). */
+
+static void
+cleanup_kernel_helper_return (struct gdbarch *gdbarch,
+ struct regcache *regs,
+ arm_displaced_step_closure *dsc)
+{
+ displaced_write_reg (regs, dsc, ARM_LR_REGNUM, dsc->tmp[0], CANNOT_WRITE_PC);
+ displaced_write_reg (regs, dsc, ARM_PC_REGNUM, dsc->tmp[0], BRANCH_WRITE_PC);
+}
+
+static void
+arm_catch_kernel_helper_return (struct gdbarch *gdbarch, CORE_ADDR from,
+ CORE_ADDR to, struct regcache *regs,
+ arm_displaced_step_closure *dsc)
+{
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ dsc->numinsns = 1;
+ dsc->insn_addr = from;
+ dsc->cleanup = &cleanup_kernel_helper_return;
+ /* Say we wrote to the PC, else cleanup will set PC to the next
+ instruction in the helper, which isn't helpful. */
+ dsc->wrote_to_pc = 1;
+
+ /* Preparation: tmp[0] <- r14
+ r14 <- <scratch space>+4
+ *(<scratch space>+8) <- from
+ Insn: ldr pc, [r14, #4]
+ Cleanup: r14 <- tmp[0], pc <- tmp[0]. */
+
+ dsc->tmp[0] = displaced_read_reg (regs, dsc, ARM_LR_REGNUM);
+ displaced_write_reg (regs, dsc, ARM_LR_REGNUM, (ULONGEST) to + 4,
+ CANNOT_WRITE_PC);
+ write_memory_unsigned_integer (to + 8, 4, byte_order, from);
+
+ dsc->modinsn[0] = 0xe59ef004; /* ldr pc, [lr, #4]. */
+}
+
+/* Linux-specific displaced step instruction copying function. Detects when
+ the program has stepped into a Linux kernel helper routine (which must be
+ handled as a special case). */
+
+static struct displaced_step_closure *
+arm_linux_displaced_step_copy_insn (struct gdbarch *gdbarch,
+ CORE_ADDR from, CORE_ADDR to,
+ struct regcache *regs)
+{
+ arm_displaced_step_closure *dsc = new arm_displaced_step_closure;
+
+ /* Detect when we enter an (inaccessible by GDB) Linux kernel helper, and
+ stop at the return location. */
+ if (from > 0xffff0000)
+ {
+ if (debug_displaced)
+ fprintf_unfiltered (gdb_stdlog, "displaced: detected kernel helper "
+ "at %.8lx\n", (unsigned long) from);
+
+ arm_catch_kernel_helper_return (gdbarch, from, to, regs, dsc);
+ }
+ else
+ {
+ /* Override the default handling of SVC instructions. */
+ dsc->u.svc.copy_svc_os = arm_linux_copy_svc;
+
+ arm_process_displaced_insn (gdbarch, from, to, regs, dsc);
+ }
+
+ arm_displaced_init_closure (gdbarch, from, to, dsc);
+
+ return dsc;
+}
+
+/* Implementation of `gdbarch_stap_is_single_operand', as defined in
+ gdbarch.h. */
+
+static int
+arm_stap_is_single_operand (struct gdbarch *gdbarch, const char *s)
+{
+ return (*s == '#' || *s == '$' || isdigit (*s) /* Literal number. */
+ || *s == '[' /* Register indirection or
+ displacement. */
+ || isalpha (*s)); /* Register value. */
+}
+
+/* This routine is used to parse a special token in ARM's assembly.
+
+ The special tokens parsed by it are:
+
+ - Register displacement (e.g, [fp, #-8])
+
+ It returns one if the special token has been parsed successfully,
+ or zero if the current token is not considered special. */
+
+static int
+arm_stap_parse_special_token (struct gdbarch *gdbarch,
+ struct stap_parse_info *p)
+{
+ if (*p->arg == '[')
+ {
+ /* Temporary holder for lookahead. */
+ const char *tmp = p->arg;
+ char *endp;
+ /* Used to save the register name. */
+ const char *start;
+ char *regname;
+ int len, offset;
+ int got_minus = 0;
+ long displacement;
+ struct stoken str;
+
+ ++tmp;
+ start = tmp;
+
+ /* Register name. */
+ while (isalnum (*tmp))
+ ++tmp;
+
+ if (*tmp != ',')
+ return 0;
+
+ len = tmp - start;
+ regname = (char *) alloca (len + 2);
+
+ offset = 0;
+ if (isdigit (*start))
+ {
+ /* If we are dealing with a register whose name begins with a
+ digit, it means we should prefix the name with the letter
+ `r', because GDB expects this name pattern. Otherwise (e.g.,
+ we are dealing with the register `fp'), we don't need to
+ add such a prefix. */
+ regname[0] = 'r';
+ offset = 1;
+ }
+
+ strncpy (regname + offset, start, len);
+ len += offset;
+ regname[len] = '\0';
+
+ if (user_reg_map_name_to_regnum (gdbarch, regname, len) == -1)
+ error (_("Invalid register name `%s' on expression `%s'."),
+ regname, p->saved_arg);
+
+ ++tmp;
+ tmp = skip_spaces (tmp);
+ if (*tmp == '#' || *tmp == '$')
+ ++tmp;
+
+ if (*tmp == '-')
+ {
+ ++tmp;
+ got_minus = 1;
+ }
+
+ 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;
+}
+
+/* ARM process record-replay constructs: syscall, signal etc. */
+
+struct linux_record_tdep arm_linux_record_tdep;
+
+/* arm_canonicalize_syscall maps from the native arm Linux set
+ of syscall ids into a canonical set of syscall ids used by
+ process record. */
+
+static enum gdb_syscall
+arm_canonicalize_syscall (int syscall)
+{
+ switch (syscall)
+ {
+ case 0: return gdb_sys_restart_syscall;
+ case 1: return gdb_sys_exit;
+ case 2: return gdb_sys_fork;
+ case 3: return gdb_sys_read;
+ case 4: return gdb_sys_write;
+ case 5: return gdb_sys_open;
+ case 6: return gdb_sys_close;
+ case 8: return gdb_sys_creat;
+ case 9: return gdb_sys_link;
+ case 10: return gdb_sys_unlink;
+ case 11: return gdb_sys_execve;
+ case 12: return gdb_sys_chdir;
+ case 13: return gdb_sys_time;
+ case 14: return gdb_sys_mknod;
+ case 15: return gdb_sys_chmod;
+ case 16: return gdb_sys_lchown16;
+ case 19: return gdb_sys_lseek;
+ case 20: return gdb_sys_getpid;
+ case 21: return gdb_sys_mount;
+ case 22: return gdb_sys_oldumount;
+ case 23: return gdb_sys_setuid16;
+ case 24: return gdb_sys_getuid16;
+ case 25: return gdb_sys_stime;
+ case 26: return gdb_sys_ptrace;
+ case 27: return gdb_sys_alarm;
+ case 29: return gdb_sys_pause;
+ case 30: return gdb_sys_utime;
+ case 33: return gdb_sys_access;
+ case 34: return gdb_sys_nice;
+ case 36: return gdb_sys_sync;
+ case 37: return gdb_sys_kill;
+ case 38: return gdb_sys_rename;
+ case 39: return gdb_sys_mkdir;
+ case 40: return gdb_sys_rmdir;
+ case 41: return gdb_sys_dup;
+ case 42: return gdb_sys_pipe;
+ case 43: return gdb_sys_times;
+ case 45: return gdb_sys_brk;
+ case 46: return gdb_sys_setgid16;
+ case 47: return gdb_sys_getgid16;
+ case 49: return gdb_sys_geteuid16;
+ case 50: return gdb_sys_getegid16;
+ case 51: return gdb_sys_acct;
+ case 52: return gdb_sys_umount;
+ case 54: return gdb_sys_ioctl;
+ case 55: return gdb_sys_fcntl;
+ case 57: return gdb_sys_setpgid;
+ case 60: return gdb_sys_umask;
+ case 61: return gdb_sys_chroot;
+ case 62: return gdb_sys_ustat;
+ case 63: return gdb_sys_dup2;
+ case 64: return gdb_sys_getppid;
+ case 65: return gdb_sys_getpgrp;
+ case 66: return gdb_sys_setsid;
+ case 67: return gdb_sys_sigaction;
+ case 70: return gdb_sys_setreuid16;
+ case 71: return gdb_sys_setregid16;
+ case 72: return gdb_sys_sigsuspend;
+ case 73: return gdb_sys_sigpending;
+ case 74: return gdb_sys_sethostname;
+ case 75: return gdb_sys_setrlimit;
+ case 76: return gdb_sys_getrlimit;
+ case 77: return gdb_sys_getrusage;
+ case 78: return gdb_sys_gettimeofday;
+ case 79: return gdb_sys_settimeofday;
+ case 80: return gdb_sys_getgroups16;
+ case 81: return gdb_sys_setgroups16;
+ case 82: return gdb_sys_select;
+ case 83: return gdb_sys_symlink;
+ case 85: return gdb_sys_readlink;
+ case 86: return gdb_sys_uselib;
+ case 87: return gdb_sys_swapon;
+ case 88: return gdb_sys_reboot;
+ case 89: return gdb_old_readdir;
+ case 90: return gdb_old_mmap;
+ case 91: return gdb_sys_munmap;
+ case 92: return gdb_sys_truncate;
+ case 93: return gdb_sys_ftruncate;
+ case 94: return gdb_sys_fchmod;
+ case 95: return gdb_sys_fchown16;
+ case 96: return gdb_sys_getpriority;
+ case 97: return gdb_sys_setpriority;
+ case 99: return gdb_sys_statfs;
+ case 100: return gdb_sys_fstatfs;
+ case 102: return gdb_sys_socketcall;
+ case 103: return gdb_sys_syslog;
+ case 104: return gdb_sys_setitimer;
+ case 105: return gdb_sys_getitimer;
+ case 106: return gdb_sys_stat;
+ case 107: return gdb_sys_lstat;
+ case 108: return gdb_sys_fstat;
+ case 111: return gdb_sys_vhangup;
+ case 113: /* sys_syscall */
+ return gdb_sys_no_syscall;
+ case 114: return gdb_sys_wait4;
+ case 115: return gdb_sys_swapoff;
+ case 116: return gdb_sys_sysinfo;
+ case 117: return gdb_sys_ipc;
+ case 118: return gdb_sys_fsync;
+ case 119: return gdb_sys_sigreturn;
+ case 120: return gdb_sys_clone;
+ case 121: return gdb_sys_setdomainname;
+ case 122: return gdb_sys_uname;
+ case 124: return gdb_sys_adjtimex;
+ case 125: return gdb_sys_mprotect;
+ case 126: return gdb_sys_sigprocmask;
+ case 128: return gdb_sys_init_module;
+ case 129: return gdb_sys_delete_module;
+ case 131: return gdb_sys_quotactl;
+ case 132: return gdb_sys_getpgid;
+ case 133: return gdb_sys_fchdir;
+ case 134: return gdb_sys_bdflush;
+ case 135: return gdb_sys_sysfs;
+ case 136: return gdb_sys_personality;
+ case 138: return gdb_sys_setfsuid16;
+ case 139: return gdb_sys_setfsgid16;
+ case 140: return gdb_sys_llseek;
+ case 141: return gdb_sys_getdents;
+ case 142: return gdb_sys_select;
+ case 143: return gdb_sys_flock;
+ case 144: return gdb_sys_msync;
+ case 145: return gdb_sys_readv;
+ case 146: return gdb_sys_writev;
+ case 147: return gdb_sys_getsid;
+ case 148: return gdb_sys_fdatasync;
+ case 149: return gdb_sys_sysctl;
+ case 150: return gdb_sys_mlock;
+ case 151: return gdb_sys_munlock;
+ case 152: return gdb_sys_mlockall;
+ case 153: return gdb_sys_munlockall;
+ case 154: return gdb_sys_sched_setparam;
+ case 155: return gdb_sys_sched_getparam;
+ case 156: return gdb_sys_sched_setscheduler;
+ case 157: return gdb_sys_sched_getscheduler;
+ case 158: return gdb_sys_sched_yield;
+ case 159: return gdb_sys_sched_get_priority_max;
+ case 160: return gdb_sys_sched_get_priority_min;
+ case 161: return gdb_sys_sched_rr_get_interval;
+ case 162: return gdb_sys_nanosleep;
+ case 163: return gdb_sys_mremap;
+ case 164: return gdb_sys_setresuid16;
+ case 165: return gdb_sys_getresuid16;
+ case 168: return gdb_sys_poll;
+ case 169: return gdb_sys_nfsservctl;
+ case 170: return gdb_sys_setresgid;
+ case 171: return gdb_sys_getresgid;
+ case 172: return gdb_sys_prctl;
+ case 173: return gdb_sys_rt_sigreturn;
+ case 174: return gdb_sys_rt_sigaction;
+ case 175: return gdb_sys_rt_sigprocmask;
+ case 176: return gdb_sys_rt_sigpending;
+ case 177: return gdb_sys_rt_sigtimedwait;
+ case 178: return gdb_sys_rt_sigqueueinfo;
+ case 179: return gdb_sys_rt_sigsuspend;
+ case 180: return gdb_sys_pread64;
+ case 181: return gdb_sys_pwrite64;
+ case 182: return gdb_sys_chown;
+ case 183: return gdb_sys_getcwd;
+ case 184: return gdb_sys_capget;
+ case 185: return gdb_sys_capset;
+ case 186: return gdb_sys_sigaltstack;
+ case 187: return gdb_sys_sendfile;
+ case 190: return gdb_sys_vfork;
+ case 191: return gdb_sys_getrlimit;
+ case 192: return gdb_sys_mmap2;
+ case 193: return gdb_sys_truncate64;
+ case 194: return gdb_sys_ftruncate64;
+ case 195: return gdb_sys_stat64;
+ case 196: return gdb_sys_lstat64;
+ case 197: return gdb_sys_fstat64;
+ case 198: return gdb_sys_lchown;
+ case 199: return gdb_sys_getuid;
+ case 200: return gdb_sys_getgid;
+ case 201: return gdb_sys_geteuid;
+ case 202: return gdb_sys_getegid;
+ case 203: return gdb_sys_setreuid;
+ case 204: return gdb_sys_setregid;
+ case 205: return gdb_sys_getgroups;
+ case 206: return gdb_sys_setgroups;
+ case 207: return gdb_sys_fchown;
+ case 208: return gdb_sys_setresuid;
+ case 209: return gdb_sys_getresuid;
+ case 210: return gdb_sys_setresgid;
+ case 211: return gdb_sys_getresgid;
+ case 212: return gdb_sys_chown;
+ case 213: return gdb_sys_setuid;
+ case 214: return gdb_sys_setgid;
+ case 215: return gdb_sys_setfsuid;
+ case 216: return gdb_sys_setfsgid;
+ case 217: return gdb_sys_getdents64;
+ case 218: return gdb_sys_pivot_root;
+ case 219: return gdb_sys_mincore;
+ case 220: return gdb_sys_madvise;
+ case 221: return gdb_sys_fcntl64;
+ case 224: return gdb_sys_gettid;
+ case 225: return gdb_sys_readahead;
+ case 226: return gdb_sys_setxattr;
+ case 227: return gdb_sys_lsetxattr;
+ case 228: return gdb_sys_fsetxattr;
+ case 229: return gdb_sys_getxattr;
+ case 230: return gdb_sys_lgetxattr;
+ case 231: return gdb_sys_fgetxattr;
+ case 232: return gdb_sys_listxattr;
+ case 233: return gdb_sys_llistxattr;
+ case 234: return gdb_sys_flistxattr;
+ case 235: return gdb_sys_removexattr;
+ case 236: return gdb_sys_lremovexattr;
+ case 237: return gdb_sys_fremovexattr;
+ case 238: return gdb_sys_tkill;
+ case 239: return gdb_sys_sendfile64;
+ case 240: return gdb_sys_futex;
+ case 241: return gdb_sys_sched_setaffinity;
+ case 242: return gdb_sys_sched_getaffinity;
+ case 243: return gdb_sys_io_setup;
+ case 244: return gdb_sys_io_destroy;
+ case 245: return gdb_sys_io_getevents;
+ case 246: return gdb_sys_io_submit;
+ case 247: return gdb_sys_io_cancel;
+ case 248: return gdb_sys_exit_group;
+ case 249: return gdb_sys_lookup_dcookie;
+ case 250: return gdb_sys_epoll_create;
+ case 251: return gdb_sys_epoll_ctl;
+ case 252: return gdb_sys_epoll_wait;
+ case 253: return gdb_sys_remap_file_pages;
+ case 256: return gdb_sys_set_tid_address;
+ case 257: return gdb_sys_timer_create;
+ case 258: return gdb_sys_timer_settime;
+ case 259: return gdb_sys_timer_gettime;
+ case 260: return gdb_sys_timer_getoverrun;
+ case 261: return gdb_sys_timer_delete;
+ case 262: return gdb_sys_clock_settime;
+ case 263: return gdb_sys_clock_gettime;
+ case 264: return gdb_sys_clock_getres;
+ case 265: return gdb_sys_clock_nanosleep;
+ case 266: return gdb_sys_statfs64;
+ case 267: return gdb_sys_fstatfs64;
+ case 268: return gdb_sys_tgkill;
+ case 269: return gdb_sys_utimes;
+ /*
+ case 270: return gdb_sys_arm_fadvise64_64;
+ case 271: return gdb_sys_pciconfig_iobase;
+ case 272: return gdb_sys_pciconfig_read;
+ case 273: return gdb_sys_pciconfig_write;
+ */
+ case 274: return gdb_sys_mq_open;
+ case 275: return gdb_sys_mq_unlink;
+ case 276: return gdb_sys_mq_timedsend;
+ case 277: return gdb_sys_mq_timedreceive;
+ case 278: return gdb_sys_mq_notify;
+ case 279: return gdb_sys_mq_getsetattr;
+ case 280: return gdb_sys_waitid;
+ case 281: return gdb_sys_socket;
+ case 282: return gdb_sys_bind;
+ case 283: return gdb_sys_connect;
+ case 284: return gdb_sys_listen;
+ case 285: return gdb_sys_accept;
+ case 286: return gdb_sys_getsockname;
+ case 287: return gdb_sys_getpeername;
+ case 288: return gdb_sys_socketpair;
+ case 289: /* send */ return gdb_sys_no_syscall;
+ case 290: return gdb_sys_sendto;
+ case 291: return gdb_sys_recv;
+ case 292: return gdb_sys_recvfrom;
+ case 293: return gdb_sys_shutdown;
+ case 294: return gdb_sys_setsockopt;
+ case 295: return gdb_sys_getsockopt;
+ case 296: return gdb_sys_sendmsg;
+ case 297: return gdb_sys_recvmsg;
+ case 298: return gdb_sys_semop;
+ case 299: return gdb_sys_semget;
+ case 300: return gdb_sys_semctl;
+ case 301: return gdb_sys_msgsnd;
+ case 302: return gdb_sys_msgrcv;
+ case 303: return gdb_sys_msgget;
+ case 304: return gdb_sys_msgctl;
+ case 305: return gdb_sys_shmat;
+ case 306: return gdb_sys_shmdt;
+ case 307: return gdb_sys_shmget;
+ case 308: return gdb_sys_shmctl;
+ case 309: return gdb_sys_add_key;
+ case 310: return gdb_sys_request_key;
+ case 311: return gdb_sys_keyctl;
+ case 312: return gdb_sys_semtimedop;
+ case 313: /* vserver */ return gdb_sys_no_syscall;
+ case 314: return gdb_sys_ioprio_set;
+ case 315: return gdb_sys_ioprio_get;
+ case 316: return gdb_sys_inotify_init;
+ case 317: return gdb_sys_inotify_add_watch;
+ case 318: return gdb_sys_inotify_rm_watch;
+ case 319: return gdb_sys_mbind;
+ case 320: return gdb_sys_get_mempolicy;
+ case 321: return gdb_sys_set_mempolicy;
+ case 322: return gdb_sys_openat;
+ case 323: return gdb_sys_mkdirat;
+ case 324: return gdb_sys_mknodat;
+ case 325: return gdb_sys_fchownat;
+ case 326: return gdb_sys_futimesat;
+ case 327: return gdb_sys_fstatat64;
+ case 328: return gdb_sys_unlinkat;
+ case 329: return gdb_sys_renameat;
+ case 330: return gdb_sys_linkat;
+ case 331: return gdb_sys_symlinkat;
+ case 332: return gdb_sys_readlinkat;
+ case 333: return gdb_sys_fchmodat;
+ case 334: return gdb_sys_faccessat;
+ case 335: return gdb_sys_pselect6;
+ case 336: return gdb_sys_ppoll;
+ case 337: return gdb_sys_unshare;
+ case 338: return gdb_sys_set_robust_list;
+ case 339: return gdb_sys_get_robust_list;
+ case 340: return gdb_sys_splice;
+ /*case 341: return gdb_sys_arm_sync_file_range;*/
+ case 342: return gdb_sys_tee;
+ case 343: return gdb_sys_vmsplice;
+ case 344: return gdb_sys_move_pages;
+ case 345: return gdb_sys_getcpu;
+ case 346: return gdb_sys_epoll_pwait;
+ case 347: return gdb_sys_kexec_load;
+ /*
+ case 348: return gdb_sys_utimensat;
+ case 349: return gdb_sys_signalfd;
+ case 350: return gdb_sys_timerfd_create;
+ case 351: return gdb_sys_eventfd;
+ */
+ case 352: return gdb_sys_fallocate;
+ /*
+ case 353: return gdb_sys_timerfd_settime;
+ case 354: return gdb_sys_timerfd_gettime;
+ case 355: return gdb_sys_signalfd4;
+ */
+ case 356: return gdb_sys_eventfd2;
+ case 357: return gdb_sys_epoll_create1;
+ case 358: return gdb_sys_dup3;
+ case 359: return gdb_sys_pipe2;
+ case 360: return gdb_sys_inotify_init1;
+ /*
+ case 361: return gdb_sys_preadv;
+ case 362: return gdb_sys_pwritev;
+ case 363: return gdb_sys_rt_tgsigqueueinfo;
+ case 364: return gdb_sys_perf_event_open;
+ case 365: return gdb_sys_recvmmsg;
+ case 366: return gdb_sys_accept4;
+ case 367: return gdb_sys_fanotify_init;
+ case 368: return gdb_sys_fanotify_mark;
+ case 369: return gdb_sys_prlimit64;
+ case 370: return gdb_sys_name_to_handle_at;
+ case 371: return gdb_sys_open_by_handle_at;
+ case 372: return gdb_sys_clock_adjtime;
+ case 373: return gdb_sys_syncfs;
+ case 374: return gdb_sys_sendmmsg;
+ case 375: return gdb_sys_setns;
+ case 376: return gdb_sys_process_vm_readv;
+ case 377: return gdb_sys_process_vm_writev;
+ case 378: return gdb_sys_kcmp;
+ case 379: return gdb_sys_finit_module;
+ */
+ case 983041: /* ARM_breakpoint */ return gdb_sys_no_syscall;
+ case 983042: /* ARM_cacheflush */ return gdb_sys_no_syscall;
+ case 983043: /* ARM_usr26 */ return gdb_sys_no_syscall;
+ case 983044: /* ARM_usr32 */ return gdb_sys_no_syscall;
+ case 983045: /* ARM_set_tls */ return gdb_sys_no_syscall;
+ default: return gdb_sys_no_syscall;
+ }
+}
+
+/* Record all registers but PC register for process-record. */
+
+static int
+arm_all_but_pc_registers_record (struct regcache *regcache)
+{
+ int i;
+
+ for (i = 0; i < ARM_PC_REGNUM; i++)
+ {
+ if (record_full_arch_list_add_reg (regcache, ARM_A1_REGNUM + i))
+ return -1;
+ }
+
+ if (record_full_arch_list_add_reg (regcache, ARM_PS_REGNUM))
+ return -1;
+
+ return 0;
+}
+
+/* Handler for arm system call instruction recording. */
+
+static int
+arm_linux_syscall_record (struct regcache *regcache, unsigned long svc_number)
+{
+ int ret = 0;
+ enum gdb_syscall syscall_gdb;
+
+ syscall_gdb = arm_canonicalize_syscall (svc_number);
+
+ if (syscall_gdb == gdb_sys_no_syscall)
+ {
+ 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 (arm_all_but_pc_registers_record (regcache))
+ return -1;
+ return 0;
+ }
+
+ ret = record_linux_system_call (syscall_gdb, regcache,
+ &arm_linux_record_tdep);
+ if (ret != 0)
+ return ret;
+
+ /* Record the return value of the system call. */
+ if (record_full_arch_list_add_reg (regcache, ARM_A1_REGNUM))
+ return -1;
+ /* Record LR. */
+ if (record_full_arch_list_add_reg (regcache, ARM_LR_REGNUM))
+ return -1;
+ /* Record CPSR. */
+ if (record_full_arch_list_add_reg (regcache, ARM_PS_REGNUM))
+ return -1;
+
+ return 0;
+}
+
+/* Implement the skip_trampoline_code gdbarch method. */
+
+static CORE_ADDR
+arm_linux_skip_trampoline_code (struct frame_info *frame, CORE_ADDR pc)
+{
+ CORE_ADDR target_pc = arm_skip_stub (frame, pc);
+
+ if (target_pc != 0)
+ return target_pc;
+
+ return find_solib_trampoline_target (frame, pc);
+}
+
+/* Implement the gcc_target_options gdbarch method. */
+
+static std::string
+arm_linux_gcc_target_options (struct gdbarch *gdbarch)
+{
+ /* GCC doesn't know "-m32". */
+ return {};