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Implements aarch64 process record and reverse debugging support

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This patch adds the support of aarch64-linux process record and reverse
debugging.  The implementation is similar to ARM's counterpart.

2015-05-26  Omair Javaid  <omair.javaid@linaro.org>
	    Yao Qi  <yao.qi@linaro.org>

	* aarch64-linux-tdep.c: Include linux-record.h and
	record-full.h.
	(struct linux_record_tdep aarch64_linux_record_tdep): Declare.
	(aarch64_syscall): New enum.
	(aarch64_canonicalize_syscall): New function.
	(aarch64_all_but_pc_registers_record): New function.
	(aarch64_linux_syscall_record): New function.
	(aarch64_linux_init_abi): Install AArch64 process record
	handler.  Update to handle syscall recording.
	* aarch64-tdep.c: Include record.h and record-full.h.
	(submask, bit, bits, REG_ALLOC, MEM_ALLOC): New macros.
	(struct aarch64_mem_r): Define.
	(aarch64_record_result): New enum.
	(struct insn_decode_record): Define.
	(insn_decode_record): New typedef.
	(aarch64_record_data_proc_reg): New function.
	(aarch64_record_data_proc_imm): New function.
	(aarch64_record_branch_except_sys): New function.
	(aarch64_record_load_store): New function.
	(aarch64_record_data_proc_simd_fp): New function.
	(aarch64_record_asimd_load_store): New function.
	(aarch64_record_decode_insn_handler): New function.
	(deallocate_reg_mem): New function.
	(aarch64_process_record): New function.
	* aarch64-tdep.h (struct gdbarch_tdep) <aarch64_syscall_record>:
	New field.
	(aarch64_process_record): New extern declaration.
	* configure.tgt: Add linux-record.o to gdb_target_obs.
	* linux-record.h (struct linux_record_tdep) <arg7>: New field.
This commit is contained in:
Omair Javaid 2015-05-11 12:10:46 +01:00 committed by Yao Qi
parent c16a3f522a
commit 99afc88b39
6 changed files with 1747 additions and 1 deletions
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33
gdb/ChangeLog
View file

@ -1,3 +1,36 @@
2015-05-26 Omair Javaid <omair.javaid@linaro.org>
Yao Qi <yao.qi@linaro.org>
* aarch64-linux-tdep.c: Include linux-record.h and
record-full.h.
(struct linux_record_tdep aarch64_linux_record_tdep): Declare.
(aarch64_syscall): New enum.
(aarch64_canonicalize_syscall): New function.
(aarch64_all_but_pc_registers_record): New function.
(aarch64_linux_syscall_record): New function.
(aarch64_linux_init_abi): Install AArch64 process record
handler. Update to handle syscall recording.
* aarch64-tdep.c: Include record.h and record-full.h.
(submask, bit, bits, REG_ALLOC, MEM_ALLOC): New macros.
(struct aarch64_mem_r): Define.
(aarch64_record_result): New enum.
(struct insn_decode_record): Define.
(insn_decode_record): New typedef.
(aarch64_record_data_proc_reg): New function.
(aarch64_record_data_proc_imm): New function.
(aarch64_record_branch_except_sys): New function.
(aarch64_record_load_store): New function.
(aarch64_record_data_proc_simd_fp): New function.
(aarch64_record_asimd_load_store): New function.
(aarch64_record_decode_insn_handler): New function.
(deallocate_reg_mem): New function.
(aarch64_process_record): New function.
* aarch64-tdep.h (struct gdbarch_tdep) <aarch64_syscall_record>:
New field.
(aarch64_process_record): New extern declaration.
* configure.tgt: Add linux-record.o to gdb_target_obs.
* linux-record.h (struct linux_record_tdep) <arg7>: New field.
2015-05-26 Omair Javaid <omair.javaid@linaro.org>
* NEWS: Add a note on process record-replay support on aarch64*-linux*

739
gdb/aarch64-linux-tdep.c
View file

@ -42,6 +42,9 @@
#include "xml-syscall.h"
#include <ctype.h>
#include "record-full.h"
#include "linux-record.h"
/* Signal frame handling.
+------------+ ^
@ -364,6 +367,576 @@ aarch64_linux_get_syscall_number (struct gdbarch *gdbarch,
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_mknod = 33,
aarch64_sys_mkdir = 34,
aarch64_sys_unlink = 35,
aarch64_sys_symlink = 36,
aarch64_sys_link = 37,
aarch64_sys_rename = 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_faccess = 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_open = 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_readlink = 78,
aarch64_sys_fstatat = 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
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);
case aarch64_sys_epoll_create1:
return gdb_sys_epoll_create;
SYSCALL_MAP (epoll_ctl);
SYSCALL_MAP (epoll_pwait);
SYSCALL_MAP (dup);
SYSCALL_MAP (fcntl);
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 (mount);
SYSCALL_MAP (nfsservctl);
SYSCALL_MAP (statfs);
SYSCALL_MAP (truncate);
SYSCALL_MAP (ftruncate);
SYSCALL_MAP (fchdir);
SYSCALL_MAP (chroot);
SYSCALL_MAP (fchmod);
SYSCALL_MAP (fchmodat);
SYSCALL_MAP (fchownat);
SYSCALL_MAP (fchown);
SYSCALL_MAP (close);
SYSCALL_MAP (vhangup);
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);
SYSCALL_MAP (sendfile);
SYSCALL_MAP (pselect6);
SYSCALL_MAP (ppoll);
SYSCALL_MAP (vmsplice);
SYSCALL_MAP (splice);
SYSCALL_MAP (tee);
SYSCALL_MAP (fstat);
SYSCALL_MAP (sync);
SYSCALL_MAP (fsync);
SYSCALL_MAP (fdatasync);
SYSCALL_MAP (sync_file_range);
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 (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);
default:
return -1;
}
}
/* 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 (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)
{
@ -409,6 +982,172 @@ aarch64_linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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 = 152;
aarch64_linux_record_tdep.size_old_sigset_t = 128;
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_dirent = 280;
aarch64_linux_record_tdep.size_dirent64 = 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 = 152;
aarch64_linux_record_tdep.size_sigset_t = 128;
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_siginfo = 128;
aarch64_linux_record_tdep.size_termios = 60;
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;
/* 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);

967
gdb/aarch64-tdep.c
View file

@ -50,6 +50,9 @@
#include "vec.h"
#include "record.h"
#include "record-full.h"
#include "features/aarch64.c"
/* Pseudo register base numbers. */
@ -2803,3 +2806,967 @@ When on, AArch64 specific debugging is enabled."),
show_aarch64_debug,
&setdebuglist, &showdebuglist);
}
/* AArch64 process record-replay related structures, defines etc. */
#define submask(x) ((1L << ((x) + 1)) - 1)
#define bit(obj,st) (((obj) >> (st)) & 1)
#define bits(obj,st,fn) (((obj) >> (st)) & submask ((fn) - (st)))
#define REG_ALLOC(REGS, LENGTH, RECORD_BUF) \
do \
{ \
unsigned int reg_len = LENGTH; \
if (reg_len) \
{ \
REGS = XNEWVEC (uint32_t, reg_len); \
memcpy(&REGS[0], &RECORD_BUF[0], sizeof(uint32_t)*LENGTH); \
} \
} \
while (0)
#define MEM_ALLOC(MEMS, LENGTH, RECORD_BUF) \
do \
{ \
unsigned int mem_len = LENGTH; \
if (mem_len) \
{ \
MEMS = XNEWVEC (struct aarch64_mem_r, mem_len); \
memcpy(&MEMS->len, &RECORD_BUF[0], \
sizeof(struct aarch64_mem_r) * LENGTH); \
} \
} \
while (0)
/* AArch64 record/replay structures and enumerations. */
struct aarch64_mem_r
{
uint64_t len; /* Record length. */
uint64_t addr; /* Memory address. */
};
enum aarch64_record_result
{
AARCH64_RECORD_SUCCESS,
AARCH64_RECORD_FAILURE,
AARCH64_RECORD_UNSUPPORTED,
AARCH64_RECORD_UNKNOWN
};
typedef struct insn_decode_record_t
{
struct gdbarch *gdbarch;
struct regcache *regcache;
CORE_ADDR this_addr; /* Address of insn to be recorded. */
uint32_t aarch64_insn; /* Insn to be recorded. */
uint32_t mem_rec_count; /* Count of memory records. */
uint32_t reg_rec_count; /* Count of register records. */
uint32_t *aarch64_regs; /* Registers to be recorded. */
struct aarch64_mem_r *aarch64_mems; /* Memory locations to be recorded. */
} insn_decode_record;
/* Record handler for data processing - register instructions. */
static unsigned int
aarch64_record_data_proc_reg (insn_decode_record *aarch64_insn_r)
{
uint8_t reg_rd, insn_bits24_27, insn_bits21_23;
uint32_t record_buf[4];
reg_rd = bits (aarch64_insn_r->aarch64_insn, 0, 4);
insn_bits24_27 = bits (aarch64_insn_r->aarch64_insn, 24, 27);
insn_bits21_23 = bits (aarch64_insn_r->aarch64_insn, 21, 23);
if (!bit (aarch64_insn_r->aarch64_insn, 28))
{
uint8_t setflags;
/* Logical (shifted register). */
if (insn_bits24_27 == 0x0a)
setflags = (bits (aarch64_insn_r->aarch64_insn, 29, 30) == 0x03);
/* Add/subtract. */
else if (insn_bits24_27 == 0x0b)
setflags = bit (aarch64_insn_r->aarch64_insn, 29);
else
return AARCH64_RECORD_UNKNOWN;
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
if (setflags)
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_CPSR_REGNUM;
}
else
{
if (insn_bits24_27 == 0x0b)
{
/* Data-processing (3 source). */
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
}
else if (insn_bits24_27 == 0x0a)
{
if (insn_bits21_23 == 0x00)
{
/* Add/subtract (with carry). */
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
if (bit (aarch64_insn_r->aarch64_insn, 29))
{
record_buf[1] = AARCH64_CPSR_REGNUM;
aarch64_insn_r->reg_rec_count = 2;
}
}
else if (insn_bits21_23 == 0x02)
{
/* Conditional compare (register) and conditional compare
(immediate) instructions. */
record_buf[0] = AARCH64_CPSR_REGNUM;
aarch64_insn_r->reg_rec_count = 1;
}
else if (insn_bits21_23 == 0x04 || insn_bits21_23 == 0x06)
{
/* CConditional select. */
/* Data-processing (2 source). */
/* Data-processing (1 source). */
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
}
else
return AARCH64_RECORD_UNKNOWN;
}
}
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Record handler for data processing - immediate instructions. */
static unsigned int
aarch64_record_data_proc_imm (insn_decode_record *aarch64_insn_r)
{
uint8_t reg_rd, insn_bit28, insn_bit23, insn_bits24_27, setflags;
uint32_t record_buf[4];
reg_rd = bits (aarch64_insn_r->aarch64_insn, 0, 4);
insn_bit28 = bit (aarch64_insn_r->aarch64_insn, 28);
insn_bit23 = bit (aarch64_insn_r->aarch64_insn, 23);
insn_bits24_27 = bits (aarch64_insn_r->aarch64_insn, 24, 27);
if (insn_bits24_27 == 0x00 /* PC rel addressing. */
|| insn_bits24_27 == 0x03 /* Bitfield and Extract. */
|| (insn_bits24_27 == 0x02 && insn_bit23)) /* Move wide (immediate). */
{
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
}
else if (insn_bits24_27 == 0x01)
{
/* Add/Subtract (immediate). */
setflags = bit (aarch64_insn_r->aarch64_insn, 29);
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
if (setflags)
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_CPSR_REGNUM;
}
else if (insn_bits24_27 == 0x02 && !insn_bit23)
{
/* Logical (immediate). */
setflags = bits (aarch64_insn_r->aarch64_insn, 29, 30) == 0x03;
record_buf[0] = reg_rd;
aarch64_insn_r->reg_rec_count = 1;
if (setflags)
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_CPSR_REGNUM;
}
else
return AARCH64_RECORD_UNKNOWN;
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Record handler for branch, exception generation and system instructions. */
static unsigned int
aarch64_record_branch_except_sys (insn_decode_record *aarch64_insn_r)
{
struct gdbarch_tdep *tdep = gdbarch_tdep (aarch64_insn_r->gdbarch);
uint8_t insn_bits24_27, insn_bits28_31, insn_bits22_23;
uint32_t record_buf[4];
insn_bits24_27 = bits (aarch64_insn_r->aarch64_insn, 24, 27);
insn_bits28_31 = bits (aarch64_insn_r->aarch64_insn, 28, 31);
insn_bits22_23 = bits (aarch64_insn_r->aarch64_insn, 22, 23);
if (insn_bits28_31 == 0x0d)
{
/* Exception generation instructions. */
if (insn_bits24_27 == 0x04)
{
if (!bits (aarch64_insn_r->aarch64_insn, 2, 4) &&
!bits (aarch64_insn_r->aarch64_insn, 21, 23) &&
bits (aarch64_insn_r->aarch64_insn, 0, 1) == 0x01)
{
ULONGEST svc_number;
regcache_raw_read_unsigned (aarch64_insn_r->regcache, 8,
&svc_number);
return tdep->aarch64_syscall_record (aarch64_insn_r->regcache,
svc_number);
}
else
return AARCH64_RECORD_UNSUPPORTED;
}
/* System instructions. */
else if (insn_bits24_27 == 0x05 && insn_bits22_23 == 0x00)
{
uint32_t reg_rt, reg_crn;
reg_rt = bits (aarch64_insn_r->aarch64_insn, 0, 4);
reg_crn = bits (aarch64_insn_r->aarch64_insn, 12, 15);
/* Record rt in case of sysl and mrs instructions. */
if (bit (aarch64_insn_r->aarch64_insn, 21))
{
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
}
/* Record cpsr for hint and msr(immediate) instructions. */
else if (reg_crn == 0x02 || reg_crn == 0x04)
{
record_buf[0] = AARCH64_CPSR_REGNUM;
aarch64_insn_r->reg_rec_count = 1;
}
}
/* Unconditional branch (register). */
else if((insn_bits24_27 & 0x0e) == 0x06)
{
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_PC_REGNUM;
if (bits (aarch64_insn_r->aarch64_insn, 21, 22) == 0x01)
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_LR_REGNUM;
}
else
return AARCH64_RECORD_UNKNOWN;
}
/* Unconditional branch (immediate). */
else if ((insn_bits28_31 & 0x07) == 0x01 && (insn_bits24_27 & 0x0c) == 0x04)
{
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_PC_REGNUM;
if (bit (aarch64_insn_r->aarch64_insn, 31))
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_LR_REGNUM;
}
else
/* Compare & branch (immediate), Test & branch (immediate) and
Conditional branch (immediate). */
record_buf[aarch64_insn_r->reg_rec_count++] = AARCH64_PC_REGNUM;
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Record handler for advanced SIMD load and store instructions. */
static unsigned int
aarch64_record_asimd_load_store (insn_decode_record *aarch64_insn_r)
{
CORE_ADDR address;
uint64_t addr_offset = 0;
uint32_t record_buf[24];
uint64_t record_buf_mem[24];
uint32_t reg_rn, reg_rt;
uint32_t reg_index = 0, mem_index = 0;
uint8_t opcode_bits, size_bits;
reg_rt = bits (aarch64_insn_r->aarch64_insn, 0, 4);
reg_rn = bits (aarch64_insn_r->aarch64_insn, 5, 9);
size_bits = bits (aarch64_insn_r->aarch64_insn, 10, 11);
opcode_bits = bits (aarch64_insn_r->aarch64_insn, 12, 15);
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn, &address);
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: Advanced SIMD load/store\n");
}
/* Load/store single structure. */
if (bit (aarch64_insn_r->aarch64_insn, 24))
{
uint8_t sindex, scale, selem, esize, replicate = 0;
scale = opcode_bits >> 2;
selem = ((opcode_bits & 0x02) |
bit (aarch64_insn_r->aarch64_insn, 21)) + 1;
switch (scale)
{
case 1:
if (size_bits & 0x01)
return AARCH64_RECORD_UNKNOWN;
break;
case 2:
if ((size_bits >> 1) & 0x01)
return AARCH64_RECORD_UNKNOWN;
if (size_bits & 0x01)
{
if (!((opcode_bits >> 1) & 0x01))
scale = 3;
else
return AARCH64_RECORD_UNKNOWN;
}
break;
case 3:
if (bit (aarch64_insn_r->aarch64_insn, 22) && !(opcode_bits & 0x01))
{
scale = size_bits;
replicate = 1;
break;
}
else
return AARCH64_RECORD_UNKNOWN;
default:
break;
}
esize = 8 << scale;
if (replicate)
for (sindex = 0; sindex < selem; sindex++)
{
record_buf[reg_index++] = reg_rt + AARCH64_V0_REGNUM;
reg_rt = (reg_rt + 1) % 32;
}
else
{
for (sindex = 0; sindex < selem; sindex++)
if (bit (aarch64_insn_r->aarch64_insn, 22))
record_buf[reg_index++] = reg_rt + AARCH64_V0_REGNUM;
else
{
record_buf_mem[mem_index++] = esize / 8;
record_buf_mem[mem_index++] = address + addr_offset;
}
addr_offset = addr_offset + (esize / 8);
reg_rt = (reg_rt + 1) % 32;
}
}
/* Load/store multiple structure. */
else
{
uint8_t selem, esize, rpt, elements;
uint8_t eindex, rindex;
esize = 8 << size_bits;
if (bit (aarch64_insn_r->aarch64_insn, 30))
elements = 128 / esize;
else
elements = 64 / esize;
switch (opcode_bits)
{
/*LD/ST4 (4 Registers). */
case 0:
rpt = 1;
selem = 4;
break;
/*LD/ST1 (4 Registers). */
case 2:
rpt = 4;
selem = 1;
break;
/*LD/ST3 (3 Registers). */
case 4:
rpt = 1;
selem = 3;
break;
/*LD/ST1 (3 Registers). */
case 6:
rpt = 3;
selem = 1;
break;
/*LD/ST1 (1 Register). */
case 7:
rpt = 1;
selem = 1;
break;
/*LD/ST2 (2 Registers). */
case 8:
rpt = 1;
selem = 2;
break;
/*LD/ST1 (2 Registers). */
case 10:
rpt = 2;
selem = 1;
break;
default:
return AARCH64_RECORD_UNSUPPORTED;
break;
}
for (rindex = 0; rindex < rpt; rindex++)
for (eindex = 0; eindex < elements; eindex++)
{
uint8_t reg_tt, sindex;
reg_tt = (reg_rt + rindex) % 32;
for (sindex = 0; sindex < selem; sindex++)
{
if (bit (aarch64_insn_r->aarch64_insn, 22))
record_buf[reg_index++] = reg_tt + AARCH64_V0_REGNUM;
else
{
record_buf_mem[mem_index++] = esize / 8;
record_buf_mem[mem_index++] = address + addr_offset;
}
addr_offset = addr_offset + (esize / 8);
reg_tt = (reg_tt + 1) % 32;
}
}
}
if (bit (aarch64_insn_r->aarch64_insn, 23))
record_buf[reg_index++] = reg_rn;
aarch64_insn_r->reg_rec_count = reg_index;
aarch64_insn_r->mem_rec_count = mem_index / 2;
MEM_ALLOC (aarch64_insn_r->aarch64_mems, aarch64_insn_r->mem_rec_count,
record_buf_mem);
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Record handler for load and store instructions. */
static unsigned int
aarch64_record_load_store (insn_decode_record *aarch64_insn_r)
{
uint8_t insn_bits24_27, insn_bits28_29, insn_bits10_11;
uint8_t insn_bit23, insn_bit21;
uint8_t opc, size_bits, ld_flag, vector_flag;
uint32_t reg_rn, reg_rt, reg_rt2;
uint64_t datasize, offset;
uint32_t record_buf[8];
uint64_t record_buf_mem[8];
CORE_ADDR address;
insn_bits10_11 = bits (aarch64_insn_r->aarch64_insn, 10, 11);
insn_bits24_27 = bits (aarch64_insn_r->aarch64_insn, 24, 27);
insn_bits28_29 = bits (aarch64_insn_r->aarch64_insn, 28, 29);
insn_bit21 = bit (aarch64_insn_r->aarch64_insn, 21);
insn_bit23 = bit (aarch64_insn_r->aarch64_insn, 23);
ld_flag = bit (aarch64_insn_r->aarch64_insn, 22);
vector_flag = bit (aarch64_insn_r->aarch64_insn, 26);
reg_rt = bits (aarch64_insn_r->aarch64_insn, 0, 4);
reg_rn = bits (aarch64_insn_r->aarch64_insn, 5, 9);
reg_rt2 = bits (aarch64_insn_r->aarch64_insn, 10, 14);
size_bits = bits (aarch64_insn_r->aarch64_insn, 30, 31);
/* Load/store exclusive. */
if (insn_bits24_27 == 0x08 && insn_bits28_29 == 0x00)
{
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load/store exclusive\n");
}
if (ld_flag)
{
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
if (insn_bit21)
{
record_buf[1] = reg_rt2;
aarch64_insn_r->reg_rec_count = 2;
}
}
else
{
if (insn_bit21)
datasize = (8 << size_bits) * 2;
else
datasize = (8 << size_bits);
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn,
&address);
record_buf_mem[0] = datasize / 8;
record_buf_mem[1] = address;
aarch64_insn_r->mem_rec_count = 1;
if (!insn_bit23)
{
/* Save register rs. */
record_buf[0] = bits (aarch64_insn_r->aarch64_insn, 16, 20);
aarch64_insn_r->reg_rec_count = 1;
}
}
}
/* Load register (literal) instructions decoding. */
else if ((insn_bits24_27 & 0x0b) == 0x08 && insn_bits28_29 == 0x01)
{
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load register (literal)\n");
}
if (vector_flag)
record_buf[0] = reg_rt + AARCH64_V0_REGNUM;
else
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
}
/* All types of load/store pair instructions decoding. */
else if ((insn_bits24_27 & 0x0a) == 0x08 && insn_bits28_29 == 0x02)
{
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load/store pair\n");
}
if (ld_flag)
{
if (vector_flag)
{
record_buf[0] = reg_rt + AARCH64_V0_REGNUM;
record_buf[1] = reg_rt2 + AARCH64_V0_REGNUM;
}
else
{
record_buf[0] = reg_rt;
record_buf[1] = reg_rt2;
}
aarch64_insn_r->reg_rec_count = 2;
}
else
{
uint16_t imm7_off;
imm7_off = bits (aarch64_insn_r->aarch64_insn, 15, 21);
if (!vector_flag)
size_bits = size_bits >> 1;
datasize = 8 << (2 + size_bits);
offset = (imm7_off & 0x40) ? (~imm7_off & 0x007f) + 1 : imm7_off;
offset = offset << (2 + size_bits);
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn,
&address);
if (!((insn_bits24_27 & 0x0b) == 0x08 && insn_bit23))
{
if (imm7_off & 0x40)
address = address - offset;
else
address = address + offset;
}
record_buf_mem[0] = datasize / 8;
record_buf_mem[1] = address;
record_buf_mem[2] = datasize / 8;
record_buf_mem[3] = address + (datasize / 8);
aarch64_insn_r->mem_rec_count = 2;
}
if (bit (aarch64_insn_r->aarch64_insn, 23))
record_buf[aarch64_insn_r->reg_rec_count++] = reg_rn;
}
/* Load/store register (unsigned immediate) instructions. */
else if ((insn_bits24_27 & 0x0b) == 0x09 && insn_bits28_29 == 0x03)
{
opc = bits (aarch64_insn_r->aarch64_insn, 22, 23);
if (!(opc >> 1))
if (opc & 0x01)
ld_flag = 0x01;
else
ld_flag = 0x0;
else
if (size_bits != 0x03)
ld_flag = 0x01;
else
return AARCH64_RECORD_UNKNOWN;
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load/store (unsigned immediate):"
" size %x V %d opc %x\n", size_bits, vector_flag,
opc);
}
if (!ld_flag)
{
offset = bits (aarch64_insn_r->aarch64_insn, 10, 21);
datasize = 8 << size_bits;
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn,
&address);
offset = offset << size_bits;
address = address + offset;
record_buf_mem[0] = datasize >> 3;
record_buf_mem[1] = address;
aarch64_insn_r->mem_rec_count = 1;
}
else
{
if (vector_flag)
record_buf[0] = reg_rt + AARCH64_V0_REGNUM;
else
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
}
}
/* Load/store register (register offset) instructions. */
else if ((insn_bits24_27 & 0x0b) == 0x08 && insn_bits28_29 == 0x03 &&
insn_bits10_11 == 0x02 && insn_bit21)
{
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load/store (register offset)\n");
}
opc = bits (aarch64_insn_r->aarch64_insn, 22, 23);
if (!(opc >> 1))
if (opc & 0x01)
ld_flag = 0x01;
else
ld_flag = 0x0;
else
if (size_bits != 0x03)
ld_flag = 0x01;
else
return AARCH64_RECORD_UNKNOWN;
if (!ld_flag)
{
uint64_t reg_rm_val;
regcache_raw_read_unsigned (aarch64_insn_r->regcache,
bits (aarch64_insn_r->aarch64_insn, 16, 20), &reg_rm_val);
if (bit (aarch64_insn_r->aarch64_insn, 12))
offset = reg_rm_val << size_bits;
else
offset = reg_rm_val;
datasize = 8 << size_bits;
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn,
&address);
address = address + offset;
record_buf_mem[0] = datasize >> 3;
record_buf_mem[1] = address;
aarch64_insn_r->mem_rec_count = 1;
}
else
{
if (vector_flag)
record_buf[0] = reg_rt + AARCH64_V0_REGNUM;
else
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
}
}
/* Load/store register (immediate and unprivileged) instructions. */
else if ((insn_bits24_27 & 0x0b) == 0x08 && insn_bits28_29 == 0x03 &&
!insn_bit21)
{
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: load/store (immediate and unprivileged)\n");
}
opc = bits (aarch64_insn_r->aarch64_insn, 22, 23);
if (!(opc >> 1))
if (opc & 0x01)
ld_flag = 0x01;
else
ld_flag = 0x0;
else
if (size_bits != 0x03)
ld_flag = 0x01;
else
return AARCH64_RECORD_UNKNOWN;
if (!ld_flag)
{
uint16_t imm9_off;
imm9_off = bits (aarch64_insn_r->aarch64_insn, 12, 20);
offset = (imm9_off & 0x0100) ? (((~imm9_off) & 0x01ff) + 1) : imm9_off;
datasize = 8 << size_bits;
regcache_raw_read_unsigned (aarch64_insn_r->regcache, reg_rn,
&address);
if (insn_bits10_11 != 0x01)
{
if (imm9_off & 0x0100)
address = address - offset;
else
address = address + offset;
}
record_buf_mem[0] = datasize >> 3;
record_buf_mem[1] = address;
aarch64_insn_r->mem_rec_count = 1;
}
else
{
if (vector_flag)
record_buf[0] = reg_rt + AARCH64_V0_REGNUM;
else
record_buf[0] = reg_rt;
aarch64_insn_r->reg_rec_count = 1;
}
if (insn_bits10_11 == 0x01 || insn_bits10_11 == 0x03)
record_buf[aarch64_insn_r->reg_rec_count++] = reg_rn;
}
/* Advanced SIMD load/store instructions. */
else
return aarch64_record_asimd_load_store (aarch64_insn_r);
MEM_ALLOC (aarch64_insn_r->aarch64_mems, aarch64_insn_r->mem_rec_count,
record_buf_mem);
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Record handler for data processing SIMD and floating point instructions. */
static unsigned int
aarch64_record_data_proc_simd_fp (insn_decode_record *aarch64_insn_r)
{
uint8_t insn_bit21, opcode, rmode, reg_rd;
uint8_t insn_bits24_27, insn_bits28_31, insn_bits10_11, insn_bits12_15;
uint8_t insn_bits11_14;
uint32_t record_buf[2];
insn_bits24_27 = bits (aarch64_insn_r->aarch64_insn, 24, 27);
insn_bits28_31 = bits (aarch64_insn_r->aarch64_insn, 28, 31);
insn_bits10_11 = bits (aarch64_insn_r->aarch64_insn, 10, 11);
insn_bits12_15 = bits (aarch64_insn_r->aarch64_insn, 12, 15);
insn_bits11_14 = bits (aarch64_insn_r->aarch64_insn, 11, 14);
opcode = bits (aarch64_insn_r->aarch64_insn, 16, 18);
rmode = bits (aarch64_insn_r->aarch64_insn, 19, 20);
reg_rd = bits (aarch64_insn_r->aarch64_insn, 0, 4);
insn_bit21 = bit (aarch64_insn_r->aarch64_insn, 21);
if (record_debug)
{
fprintf_unfiltered (gdb_stdlog,
"Process record: data processing SIMD/FP: ");
}
if ((insn_bits28_31 & 0x05) == 0x01 && insn_bits24_27 == 0x0e)
{
/* Floating point - fixed point conversion instructions. */
if (!insn_bit21)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "FP - fixed point conversion");
if ((opcode >> 1) == 0x0 && rmode == 0x03)
record_buf[0] = reg_rd;
else
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
/* Floating point - conditional compare instructions. */
else if (insn_bits10_11 == 0x01)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "FP - conditional compare");
record_buf[0] = AARCH64_CPSR_REGNUM;
}
/* Floating point - data processing (2-source) and
conditional select instructions. */
else if (insn_bits10_11 == 0x02 || insn_bits10_11 == 0x03)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "FP - DP (2-source)");
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
else if (insn_bits10_11 == 0x00)
{
/* Floating point - immediate instructions. */
if ((insn_bits12_15 & 0x01) == 0x01
|| (insn_bits12_15 & 0x07) == 0x04)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "FP - immediate");
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
/* Floating point - compare instructions. */
else if ((insn_bits12_15 & 0x03) == 0x02)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "FP - immediate");
record_buf[0] = AARCH64_CPSR_REGNUM;
}
/* Floating point - integer conversions instructions. */
if (insn_bits12_15 == 0x00)
{
/* Convert float to integer instruction. */
if (!(opcode >> 1) || ((opcode >> 1) == 0x02 && !rmode))
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "float to int conversion");
record_buf[0] = reg_rd + AARCH64_X0_REGNUM;
}
/* Convert integer to float instruction. */
else if ((opcode >> 1) == 0x01 && !rmode)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "int to float conversion");
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
/* Move float to integer instruction. */
else if ((opcode >> 1) == 0x03)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "move float to int");
if (!(opcode & 0x01))
record_buf[0] = reg_rd + AARCH64_X0_REGNUM;
else
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
}
}
}
else if ((insn_bits28_31 & 0x09) == 0x00 && insn_bits24_27 == 0x0e)
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "SIMD copy");
/* Advanced SIMD copy instructions. */
if (!bits (aarch64_insn_r->aarch64_insn, 21, 23)
&& !bit (aarch64_insn_r->aarch64_insn, 15)
&& bit (aarch64_insn_r->aarch64_insn, 10))
{
if (insn_bits11_14 == 0x05 || insn_bits11_14 == 0x07)
record_buf[0] = reg_rd + AARCH64_X0_REGNUM;
else
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
else
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
/* All remaining floating point or advanced SIMD instructions. */
else
{
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "all remain");
record_buf[0] = reg_rd + AARCH64_V0_REGNUM;
}
if (record_debug)
fprintf_unfiltered (gdb_stdlog, "\n");
aarch64_insn_r->reg_rec_count++;
gdb_assert (aarch64_insn_r->reg_rec_count == 1);
REG_ALLOC (aarch64_insn_r->aarch64_regs, aarch64_insn_r->reg_rec_count,
record_buf);
return AARCH64_RECORD_SUCCESS;
}
/* Decodes insns type and invokes its record handler. */
static unsigned int
aarch64_record_decode_insn_handler (insn_decode_record *aarch64_insn_r)
{
uint32_t ins_bit25, ins_bit26, ins_bit27, ins_bit28;
ins_bit25 = bit (aarch64_insn_r->aarch64_insn, 25);
ins_bit26 = bit (aarch64_insn_r->aarch64_insn, 26);
ins_bit27 = bit (aarch64_insn_r->aarch64_insn, 27);
ins_bit28 = bit (aarch64_insn_r->aarch64_insn, 28);
/* Data processing - immediate instructions. */
if (!ins_bit26 && !ins_bit27 && ins_bit28)
return aarch64_record_data_proc_imm (aarch64_insn_r);
/* Branch, exception generation and system instructions. */
if (ins_bit26 && !ins_bit27 && ins_bit28)
return aarch64_record_branch_except_sys (aarch64_insn_r);
/* Load and store instructions. */
if (!ins_bit25 && ins_bit27)
return aarch64_record_load_store (aarch64_insn_r);
/* Data processing - register instructions. */
if (ins_bit25 && !ins_bit26 && ins_bit27)
return aarch64_record_data_proc_reg (aarch64_insn_r);
/* Data processing - SIMD and floating point instructions. */
if (ins_bit25 && ins_bit26 && ins_bit27)
return aarch64_record_data_proc_simd_fp (aarch64_insn_r);
return AARCH64_RECORD_UNSUPPORTED;
}
/* Cleans up local record registers and memory allocations. */
static void
deallocate_reg_mem (insn_decode_record *record)
{
xfree (record->aarch64_regs);
xfree (record->aarch64_mems);
}
/* Parse the current instruction and record the values of the registers and
memory that will be changed in current instruction to record_arch_list
return -1 if something is wrong. */
int
aarch64_process_record (struct gdbarch *gdbarch, struct regcache *regcache,
CORE_ADDR insn_addr)
{
uint32_t rec_no = 0;
uint8_t insn_size = 4;
uint32_t ret = 0;
ULONGEST t_bit = 0, insn_id = 0;
gdb_byte buf[insn_size];
insn_decode_record aarch64_record;
memset (&buf[0], 0, insn_size);
memset (&aarch64_record, 0, sizeof (insn_decode_record));
target_read_memory (insn_addr, &buf[0], insn_size);
aarch64_record.aarch64_insn
= (uint32_t) extract_unsigned_integer (&buf[0],
insn_size,
gdbarch_byte_order (gdbarch));
aarch64_record.regcache = regcache;
aarch64_record.this_addr = insn_addr;
aarch64_record.gdbarch = gdbarch;
ret = aarch64_record_decode_insn_handler (&aarch64_record);
if (ret == AARCH64_RECORD_UNSUPPORTED)
{
printf_unfiltered (_("Process record does not support instruction "
"0x%0x at address %s.\n"),
aarch64_record.aarch64_insn,
paddress (gdbarch, insn_addr));
ret = -1;
}
if (0 == ret)
{
/* Record registers. */
record_full_arch_list_add_reg (aarch64_record.regcache,
AARCH64_PC_REGNUM);
/* Always record register CPSR. */
record_full_arch_list_add_reg (aarch64_record.regcache,
AARCH64_CPSR_REGNUM);
if (aarch64_record.aarch64_regs)
for (rec_no = 0; rec_no < aarch64_record.reg_rec_count; rec_no++)
if (record_full_arch_list_add_reg (aarch64_record.regcache,
aarch64_record.aarch64_regs[rec_no]))
ret = -1;
/* Record memories. */
if (aarch64_record.aarch64_mems)
for (rec_no = 0; rec_no < aarch64_record.mem_rec_count; rec_no++)
if (record_full_arch_list_add_mem
((CORE_ADDR)aarch64_record.aarch64_mems[rec_no].addr,
aarch64_record.aarch64_mems[rec_no].len))
ret = -1;
if (record_full_arch_list_add_end ())
ret = -1;
}
deallocate_reg_mem (&aarch64_record);
return ret;
}

6
gdb/aarch64-tdep.h
View file

@ -88,8 +88,14 @@ struct gdbarch_tdep
struct type *vns_type;
struct type *vnh_type;
struct type *vnb_type;
/* syscall record. */
int (*aarch64_syscall_record) (struct regcache *regcache, unsigned long svc_number);
};
extern struct target_desc *tdesc_aarch64;
extern int aarch64_process_record (struct gdbarch *gdbarch,
struct regcache *regcache, CORE_ADDR addr);
#endif /* aarch64-tdep.h */

2
gdb/configure.tgt
View file

@ -45,7 +45,7 @@ aarch64*-*-linux*)
# Target: AArch64 linux
gdb_target_obs="aarch64-tdep.o aarch64-linux-tdep.o \
glibc-tdep.o linux-tdep.o solib-svr4.o \
symfile-mem.o"
symfile-mem.o linux-record.o"
build_gdbserver=yes
;;

1
gdb/linux-record.h
View file

@ -174,6 +174,7 @@ struct linux_record_tdep
int arg4;
int arg5;
int arg6;
int arg7;
};
/* Enum that defines the gdb-canonical set of Linux syscall identifiers.