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binutils-gdb/gdb/aarch64-linux-tdep.c
Omair Javaid 8727de56b0 Fix tagged pointer support 
This patch fixes tagged pointer support for AArch64 GDB. Linux kernel
debugging failure was reported after tagged pointer support was committed.

After a discussion around best path forward to manage tagged pointers
on GDB side we are going to disable tagged pointers support for
aarch64-none-elf-gdb because for non-linux applications we cant be
sure if tagged pointers will be used by MMU or not.

Also for aarch64-linux-gdb we are going to sign extend user-space
address after clearing tag bits. This will help debug both kernel
and user-space addresses based on information from linux kernel
documentation given below:

According to AArch64 memory map:
https://www.kernel.org/doc/Documentation/arm64/memory.txt

"User addresses have bits 63:48 set to 0 while the kernel addresses have
the same bits set to 1."

According to AArch64 tagged pointers document:
https://www.kernel.org/doc/Documentation/arm64/tagged-pointers.txt

The kernel configures the translation tables so that translations made
via TTBR0 (i.e. userspace mappings) have the top byte (bits 63:56) of
the virtual address ignored by the translation hardware. This frees up
this byte for application use.

Running gdb testsuite after applying this patch introduces no regressions
and tagged pointer test cases still pass.

gdb/ChangeLog:
2018-05-10  Omair Javaid  <omair.javaid@linaro.org>

	PR gdb/23127
	* aarch64-linux-tdep.c (aarch64_linux_init_abi): Add call to
	set_gdbarch_significant_addr_bit.
	* aarch64-tdep.c (aarch64_gdbarch_init): Remove call to
	set_gdbarch_significant_addr_bit.
	* utils.c (address_significant): Update to sign extend addr.
2018-05-10 14:37:31 +05:00

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/* Target-dependent code for GNU/Linux AArch64.
Copyright (C) 2009-2018 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 <http://www.gnu.org/licenses/>. */
#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 <ctype.h>
#include "record-full.h"
#include "linux-record.h"
#include "auxv.h"
#include "elf/common.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)
{
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);
}
/* Implement the "core_read_description" gdbarch method. */
static const struct target_desc *
aarch64_linux_core_read_description (struct gdbarch *gdbarch,
struct target_ops *target, bfd *abfd)
{
CORE_ADDR aarch64_hwcap = 0;
if (target_auxv_search (target, AT_HWCAP, &aarch64_hwcap) != 1)
return NULL;
return aarch64_read_description ();
}
/* 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 (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;
}
/* Implement the "gcc_target_options" gdbarch method. */
static char *
aarch64_linux_gcc_target_options (struct gdbarch *gdbarch)
{
/* GCC doesn't know "-m64". */
return NULL;
}
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);
set_gdbarch_core_read_description
(gdbarch, aarch64_linux_core_read_description);
/* 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;
/* The top byte of a user space address known as the "tag",
is ignored by the kernel and can be regarded as additional
data associated with the address. */
set_gdbarch_significant_addr_bit (gdbarch, 56);
/* 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_location (gdbarch, linux_displaced_step_location);
set_gdbarch_displaced_step_hw_singlestep (gdbarch,
aarch64_displaced_step_hw_singlestep);
set_gdbarch_gcc_target_options (gdbarch, aarch64_linux_gcc_target_options);
}
void
_initialize_aarch64_linux_tdep (void)
{
gdbarch_register_osabi (bfd_arch_aarch64, 0, GDB_OSABI_LINUX,
aarch64_linux_init_abi);
}
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