LoongArch: Linux Syscall Interface
This commit is contained in:
caiyinyu
Adhemerval Zanella
parent
3275882261
commit
45955fe618
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@ -0,0 +1,2 @@
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/* An instruction which should crash any program is a breakpoint. */
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#define ABORT_INSTRUCTION asm ("break 0")
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@ -0,0 +1,42 @@
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/* High precision, low overhead timing functions.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
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version 2.1 of the License, or (at your option) any later version.
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||||
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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||||
Lesser General Public License for more details.
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||||
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||||
You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _HP_TIMING_H
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#define _HP_TIMING_H 1
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/* We always assume having the timestamp register. */
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#define HP_TIMING_AVAIL (1)
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#define HP_SMALL_TIMING_AVAIL (1)
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/* We indeed have inlined functions. */
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#define HP_TIMING_INLINE (1)
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/* We use 64bit values for the times. */
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typedef unsigned long long int hp_timing_t;
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/* Read the stable counter. */
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#define HP_TIMING_NOW(Var) \
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({ \
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unsigned long long int _count; \
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asm volatile ("rdtime.d\t%0,$r0" : "=r" (_count)); \
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(Var) = _count; \
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})
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#include <hp-timing-common.h>
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#endif /* hp-timing.h */
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@ -0,0 +1,301 @@
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/* AUTOGENERATED by update-syscall-lists.py. */
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#define __NR_accept 202
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#define __NR_accept4 242
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#define __NR_acct 89
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#define __NR_add_key 217
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#define __NR_adjtimex 171
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#define __NR_bind 200
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#define __NR_bpf 280
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#define __NR_brk 214
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#define __NR_capget 90
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#define __NR_capset 91
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#define __NR_chdir 49
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#define __NR_chroot 51
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#define __NR_clock_adjtime 266
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#define __NR_clock_getres 114
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#define __NR_clock_gettime 113
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#define __NR_clock_nanosleep 115
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#define __NR_clock_settime 112
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#define __NR_clone 220
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#define __NR_clone3 435
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#define __NR_close 57
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#define __NR_close_range 436
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#define __NR_connect 203
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#define __NR_copy_file_range 285
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#define __NR_delete_module 106
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#define __NR_dup 23
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#define __NR_dup3 24
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#define __NR_epoll_create1 20
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#define __NR_epoll_ctl 21
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#define __NR_epoll_pwait 22
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#define __NR_epoll_pwait2 441
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#define __NR_eventfd2 19
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#define __NR_execve 221
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#define __NR_execveat 281
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#define __NR_exit 93
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#define __NR_exit_group 94
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#define __NR_faccessat 48
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#define __NR_faccessat2 439
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#define __NR_fadvise64 223
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#define __NR_fallocate 47
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#define __NR_fanotify_init 262
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#define __NR_fanotify_mark 263
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#define __NR_fchdir 50
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#define __NR_fchmod 52
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#define __NR_fchmodat 53
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#define __NR_fchown 55
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#define __NR_fchownat 54
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#define __NR_fcntl 25
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#define __NR_fdatasync 83
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#define __NR_fgetxattr 10
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#define __NR_finit_module 273
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#define __NR_flistxattr 13
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#define __NR_flock 32
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#define __NR_fremovexattr 16
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#define __NR_fsconfig 431
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#define __NR_fsetxattr 7
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#define __NR_fsmount 432
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#define __NR_fsopen 430
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#define __NR_fspick 433
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#define __NR_fstatfs 44
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#define __NR_fsync 82
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#define __NR_ftruncate 46
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#define __NR_futex 98
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#define __NR_futex_waitv 449
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#define __NR_get_mempolicy 236
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#define __NR_get_robust_list 100
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#define __NR_getcpu 168
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#define __NR_getcwd 17
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#define __NR_getdents64 61
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#define __NR_getegid 177
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#define __NR_geteuid 175
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#define __NR_getgid 176
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#define __NR_getgroups 158
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#define __NR_getitimer 102
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#define __NR_getpeername 205
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#define __NR_getpgid 155
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#define __NR_getpid 172
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#define __NR_getppid 173
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#define __NR_getpriority 141
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#define __NR_getrandom 278
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#define __NR_getresgid 150
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#define __NR_getresuid 148
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#define __NR_getrusage 165
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#define __NR_getsid 156
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#define __NR_getsockname 204
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#define __NR_getsockopt 209
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#define __NR_gettid 178
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#define __NR_gettimeofday 169
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#define __NR_getuid 174
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#define __NR_getxattr 8
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#define __NR_init_module 105
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#define __NR_inotify_add_watch 27
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#define __NR_inotify_init1 26
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#define __NR_inotify_rm_watch 28
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#define __NR_io_cancel 3
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#define __NR_io_destroy 1
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#define __NR_io_getevents 4
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#define __NR_io_pgetevents 292
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#define __NR_io_setup 0
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#define __NR_io_submit 2
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#define __NR_io_uring_enter 426
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#define __NR_io_uring_register 427
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#define __NR_io_uring_setup 425
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#define __NR_ioctl 29
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#define __NR_ioprio_get 31
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#define __NR_ioprio_set 30
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#define __NR_kcmp 272
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#define __NR_kexec_file_load 294
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#define __NR_kexec_load 104
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#define __NR_keyctl 219
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#define __NR_kill 129
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#define __NR_landlock_add_rule 445
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#define __NR_landlock_create_ruleset 444
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#define __NR_landlock_restrict_self 446
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#define __NR_lgetxattr 9
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#define __NR_linkat 37
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#define __NR_listen 201
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#define __NR_listxattr 11
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#define __NR_llistxattr 12
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#define __NR_lookup_dcookie 18
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#define __NR_lremovexattr 15
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#define __NR_lseek 62
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#define __NR_lsetxattr 6
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#define __NR_madvise 233
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#define __NR_mbind 235
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#define __NR_membarrier 283
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#define __NR_memfd_create 279
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#define __NR_migrate_pages 238
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#define __NR_mincore 232
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#define __NR_mkdirat 34
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#define __NR_mknodat 33
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#define __NR_mlock 228
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#define __NR_mlock2 284
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#define __NR_mlockall 230
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#define __NR_mmap 222
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#define __NR_mount 40
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#define __NR_mount_setattr 442
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#define __NR_move_mount 429
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#define __NR_move_pages 239
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#define __NR_mprotect 226
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#define __NR_mq_getsetattr 185
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#define __NR_mq_notify 184
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#define __NR_mq_open 180
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#define __NR_mq_timedreceive 183
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#define __NR_mq_timedsend 182
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#define __NR_mq_unlink 181
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#define __NR_mremap 216
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#define __NR_msgctl 187
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#define __NR_msgget 186
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#define __NR_msgrcv 188
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#define __NR_msgsnd 189
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#define __NR_msync 227
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#define __NR_munlock 229
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#define __NR_munlockall 231
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#define __NR_munmap 215
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#define __NR_name_to_handle_at 264
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#define __NR_nanosleep 101
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#define __NR_nfsservctl 42
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#define __NR_open_by_handle_at 265
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#define __NR_open_tree 428
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#define __NR_openat 56
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#define __NR_openat2 437
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#define __NR_perf_event_open 241
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#define __NR_personality 92
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#define __NR_pidfd_getfd 438
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#define __NR_pidfd_open 434
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#define __NR_pidfd_send_signal 424
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#define __NR_pipe2 59
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#define __NR_pivot_root 41
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#define __NR_pkey_alloc 289
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#define __NR_pkey_free 290
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#define __NR_pkey_mprotect 288
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#define __NR_ppoll 73
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#define __NR_prctl 167
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#define __NR_pread64 67
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#define __NR_preadv 69
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#define __NR_preadv2 286
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#define __NR_prlimit64 261
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#define __NR_process_madvise 440
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#define __NR_process_mrelease 448
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#define __NR_process_vm_readv 270
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#define __NR_process_vm_writev 271
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#define __NR_pselect6 72
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#define __NR_ptrace 117
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#define __NR_pwrite64 68
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#define __NR_pwritev 70
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#define __NR_pwritev2 287
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#define __NR_quotactl 60
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#define __NR_quotactl_fd 443
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#define __NR_read 63
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#define __NR_readahead 213
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#define __NR_readlinkat 78
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#define __NR_readv 65
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#define __NR_reboot 142
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#define __NR_recvfrom 207
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#define __NR_recvmmsg 243
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#define __NR_recvmsg 212
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#define __NR_remap_file_pages 234
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#define __NR_removexattr 14
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#define __NR_renameat2 276
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#define __NR_request_key 218
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#define __NR_restart_syscall 128
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#define __NR_rseq 293
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#define __NR_rt_sigaction 134
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#define __NR_rt_sigpending 136
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#define __NR_rt_sigprocmask 135
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#define __NR_rt_sigqueueinfo 138
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#define __NR_rt_sigreturn 139
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#define __NR_rt_sigsuspend 133
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#define __NR_rt_sigtimedwait 137
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#define __NR_rt_tgsigqueueinfo 240
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#define __NR_sched_get_priority_max 125
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#define __NR_sched_get_priority_min 126
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#define __NR_sched_getaffinity 123
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#define __NR_sched_getattr 275
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#define __NR_sched_getparam 121
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#define __NR_sched_getscheduler 120
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#define __NR_sched_rr_get_interval 127
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#define __NR_sched_setaffinity 122
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#define __NR_sched_setattr 274
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#define __NR_sched_setparam 118
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#define __NR_sched_setscheduler 119
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#define __NR_sched_yield 124
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#define __NR_seccomp 277
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#define __NR_semctl 191
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#define __NR_semget 190
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#define __NR_semop 193
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#define __NR_semtimedop 192
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#define __NR_sendfile 71
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#define __NR_sendmmsg 269
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#define __NR_sendmsg 211
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#define __NR_sendto 206
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#define __NR_set_mempolicy 237
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#define __NR_set_mempolicy_home_node 450
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#define __NR_set_robust_list 99
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#define __NR_set_tid_address 96
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#define __NR_setdomainname 162
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#define __NR_setfsgid 152
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#define __NR_setfsuid 151
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#define __NR_setgid 144
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#define __NR_setgroups 159
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#define __NR_sethostname 161
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#define __NR_setitimer 103
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#define __NR_setns 268
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#define __NR_setpgid 154
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#define __NR_setpriority 140
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#define __NR_setregid 143
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#define __NR_setresgid 149
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#define __NR_setresuid 147
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#define __NR_setreuid 145
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#define __NR_setsid 157
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#define __NR_setsockopt 208
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#define __NR_settimeofday 170
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#define __NR_setuid 146
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#define __NR_setxattr 5
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#define __NR_shmat 196
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#define __NR_shmctl 195
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#define __NR_shmdt 197
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#define __NR_shmget 194
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#define __NR_shutdown 210
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#define __NR_sigaltstack 132
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#define __NR_signalfd4 74
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#define __NR_socket 198
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#define __NR_socketpair 199
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#define __NR_splice 76
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#define __NR_statfs 43
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#define __NR_statx 291
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#define __NR_swapoff 225
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#define __NR_swapon 224
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#define __NR_symlinkat 36
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#define __NR_sync 81
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#define __NR_sync_file_range 84
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#define __NR_syncfs 267
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#define __NR_sysinfo 179
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#define __NR_syslog 116
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#define __NR_tee 77
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#define __NR_tgkill 131
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#define __NR_timer_create 107
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#define __NR_timer_delete 111
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#define __NR_timer_getoverrun 109
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#define __NR_timer_gettime 108
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#define __NR_timer_settime 110
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#define __NR_timerfd_create 85
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#define __NR_timerfd_gettime 87
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#define __NR_timerfd_settime 86
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#define __NR_times 153
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#define __NR_tkill 130
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#define __NR_truncate 45
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#define __NR_umask 166
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#define __NR_umount2 39
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#define __NR_uname 160
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#define __NR_unlinkat 35
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#define __NR_unshare 97
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#define __NR_userfaultfd 282
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#define __NR_utimensat 88
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#define __NR_vhangup 58
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#define __NR_vmsplice 75
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#define __NR_wait4 260
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#define __NR_waitid 95
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#define __NR_write 64
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#define __NR_writev 66
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@ -0,0 +1,96 @@
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/* The clone syscall wrapper.
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Copyright (C) 2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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|
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The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library. If not, see
|
||||
<https://www.gnu.org/licenses/>. */
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/* clone() is even more special than fork() as it mucks with stacks
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and invokes a function in the right context after its all over. */
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#include <sys/asm.h>
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#include <sysdep.h>
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#define _ERRNO_H 1
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#include <bits/errno.h>
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#include <tls.h>
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#include "tcb-offsets.h"
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/* int clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg,
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void *parent_tidptr, void *tls, void *child_tidptr) */
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ENTRY (__clone)
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/* Align stack to 16. */
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BSTRINS a1, zero, 3, 0
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/* Sanity check arguments. */
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beqz a0, L (invalid) /* No NULL function pointers. */
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beqz a1, L (invalid) /* No NULL stack pointers. */
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ADDI a1, a1, -16 /* Reserve argument save space. */
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REG_S a0, a1, 0 /* Save function pointer. */
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REG_S a3, a1, SZREG /* Save argument pointer. */
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/* The syscall expects the args to be in different slots. */
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or a0, a2, zero
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or a2, a4, zero
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or a3, a6, zero
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or a4, a5, zero
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/* Do the system call. */
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LI a7,__NR_clone
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syscall 0
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blt a0, zero ,L (error)
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beqz a0,L (thread_start)
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/* Successful return from the parent. */
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ret
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L (invalid):
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LI a0, -EINVAL
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/* Something bad happened -- no child created. */
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L (error):
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b __syscall_error
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END (__clone)
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/* Load up the arguments to the function. Put this block of code in
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its own function so that we can terminate the stack trace with our
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debug info. */
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ENTRY (__thread_start)
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L (thread_start):
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/* Terminate call stack by noting ra is undefined. Use a dummy
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.cfi_label to force starting the FDE. */
|
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.cfi_label .Ldummy
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cfi_undefined (1)
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/* Restore the arg for user's function. */
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REG_L a1, sp, 0 /* Function pointer. */
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REG_L a0, sp, SZREG /* Argument pointer. */
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/* Call the user's function. */
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jirl ra, a1, 0
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||||
/* Call exit with the function's return value. */
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||||
LI a7, __NR_exit
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syscall 0
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END (__thread_start)
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libc_hidden_def (__clone)
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weak_alias (__clone, clone)
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@ -0,0 +1,83 @@
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/* The clone3 syscall wrapper.
|
||||
Copyright (C) 2022 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library. If not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
/* clone3() is even more special than fork() as it mucks with stacks
|
||||
and invokes a function in the right context after its all over. */
|
||||
|
||||
#include <sys/asm.h>
|
||||
#include <sysdep.h>
|
||||
#define _ERRNO_H 1
|
||||
#include <bits/errno.h>
|
||||
#include <tls.h>
|
||||
#include "tcb-offsets.h"
|
||||
|
||||
/* int clone3(struct clone_args *cl_args, size_t size,
|
||||
int (*func)(void *arg), void *arg); */
|
||||
|
||||
ENTRY (__clone3)
|
||||
|
||||
/* Sanity check arguments. */
|
||||
beqz a0, L (invalid) /* No NULL cl_args pointer. */
|
||||
beqz a2, L (invalid) /* No NULL function pointer. */
|
||||
|
||||
/* Do the system call. */
|
||||
LI a7, __NR_clone3
|
||||
syscall 0
|
||||
|
||||
blt a0, zero ,L (error)
|
||||
beqz a0, L (thread_start3)
|
||||
|
||||
/* Successful return from the parent. */
|
||||
ret
|
||||
|
||||
L (invalid):
|
||||
LI a0, -EINVAL
|
||||
|
||||
/* Something bad happened -- no child created. */
|
||||
L (error):
|
||||
b __syscall_error
|
||||
|
||||
END (__clone3)
|
||||
|
||||
/* Load up the arguments to the function. Put this block of code in
|
||||
its own function so that we can terminate the stack trace with our
|
||||
debug info. */
|
||||
ENTRY (__thread_start3)
|
||||
L (thread_start3):
|
||||
|
||||
/* Terminate call stack by noting ra is undefined. Use a dummy
|
||||
.cfi_label to force starting the FDE. */
|
||||
.cfi_label .Ldummy
|
||||
cfi_undefined (1)
|
||||
|
||||
/* Align stack to 16. */
|
||||
BSTRINS sp, zero, 3, 0
|
||||
|
||||
/* Set up arguments for the function call. */
|
||||
move a0, a3 /* Argument. */
|
||||
jirl ra, a2, 0 /* Call function. */
|
||||
|
||||
/* Call exit with the function's return value. */
|
||||
LI a7, __NR_exit
|
||||
syscall 0
|
||||
|
||||
END (__thread_start3)
|
||||
|
||||
libc_hidden_def (__clone3)
|
||||
weak_alias (__clone3, clone3)
|
||||
|
|
@ -0,0 +1,53 @@
|
|||
/* syscall error handlers
|
||||
Copyright (C) 2022 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library. If not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
|
||||
#if IS_IN (libc)
|
||||
# define errno __libc_errno
|
||||
#endif
|
||||
|
||||
ENTRY (__syscall_error)
|
||||
/* Fall through to __syscall_set_errno */
|
||||
END (__syscall_error)
|
||||
|
||||
/* Non-standard calling convention: argument in a0, return address in t0,
|
||||
and clobber only t1.
|
||||
*/
|
||||
ENTRY (__syscall_set_errno)
|
||||
|
||||
/* We got here because a0 < 0, but only codes in the range [-4095, -1]
|
||||
represent errors. Otherwise, just return the result normally.
|
||||
*/
|
||||
li.d t1, -4096
|
||||
bgeu t1, a0, L (out)
|
||||
sub.w a0, zero, a0
|
||||
#if RTLD_PRIVATE_ERRNO
|
||||
la t1, rtld_errno
|
||||
#elif defined(__PIC__)
|
||||
la.tls.ie t1, errno
|
||||
add.d t1, tp, t1
|
||||
#else
|
||||
la.tls.le t1, errno
|
||||
add.d t1, tp, t1
|
||||
#endif
|
||||
st.w a0, t1, 0
|
||||
li.d a0, -1
|
||||
L (out):
|
||||
ret
|
||||
END (__syscall_set_errno)
|
||||
|
|
@ -0,0 +1,320 @@
|
|||
/* Assembly macros for LoongArch.
|
||||
Copyright (C) 2022 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library. If not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#ifndef _LINUX_LOONGARCH_SYSDEP_H
|
||||
#define _LINUX_LOONGARCH_SYSDEP_H 1
|
||||
|
||||
#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
|
||||
#include <tls.h>
|
||||
|
||||
#ifdef __ASSEMBLER__
|
||||
|
||||
#include <sys/asm.h>
|
||||
#define ret jirl zero, ra, 0
|
||||
#define L(label) .L##label
|
||||
|
||||
/* Performs a system call, handling errors by setting errno. Linux indicates
|
||||
errors by setting a0 to a value between -1 and -4095. */
|
||||
#undef PSEUDO
|
||||
#define PSEUDO(name, syscall_name, args) \
|
||||
ENTRY (name); \
|
||||
li.d a7, SYS_ify (syscall_name); \
|
||||
syscall 0; \
|
||||
li.d a7, -4096; \
|
||||
bltu a7, a0, .Lsyscall_error##name;
|
||||
|
||||
#undef PSEUDO_END
|
||||
#define PSEUDO_END(sym) \
|
||||
SYSCALL_ERROR_HANDLER (sym); \
|
||||
ret; \
|
||||
END (sym);
|
||||
|
||||
#if !IS_IN(libc)
|
||||
#if RTLD_PRIVATE_ERRNO
|
||||
|
||||
#define SYSCALL_ERROR_HANDLER(name) \
|
||||
.Lsyscall_error##name : la t0, rtld_errno; \
|
||||
sub.w a0, zero, a0; \
|
||||
st.w a0, t0, 0; \
|
||||
li.d a0, -1;
|
||||
|
||||
#else
|
||||
|
||||
#define SYSCALL_ERROR_HANDLER(name) \
|
||||
.Lsyscall_error##name : la.tls.ie t0, errno; \
|
||||
add.d t0, tp, t0; \
|
||||
sub.w a0, zero, a0; \
|
||||
st.w a0, t0, 0; \
|
||||
li.d a0, -1;
|
||||
|
||||
#endif
|
||||
#else
|
||||
|
||||
#define SYSCALL_ERROR_HANDLER(name) .Lsyscall_error##name : b __syscall_error;
|
||||
|
||||
#endif
|
||||
|
||||
/* Performs a system call, not setting errno. */
|
||||
#undef PSEUDO_NEORRNO
|
||||
#define PSEUDO_NOERRNO(name, syscall_name, args) \
|
||||
ENTRY (name); \
|
||||
li.d a7, SYS_ify (syscall_name); \
|
||||
syscall 0;
|
||||
|
||||
#undef PSEUDO_END_NOERRNO
|
||||
#define PSEUDO_END_NOERRNO(name) END (name);
|
||||
|
||||
#undef ret_NOERRNO
|
||||
#define ret_NOERRNO ret
|
||||
|
||||
/* Perfroms a system call, returning the error code. */
|
||||
#undef PSEUDO_ERRVAL
|
||||
#define PSEUDO_ERRVAL(name, syscall_name, args) \
|
||||
PSEUDO_NOERRNO (name, syscall_name, args); \
|
||||
slli.d a0, a0, 32; \
|
||||
srai.d a0, a0, 32; /* sign_ext */ \
|
||||
sub.d a0, zero, a0;
|
||||
|
||||
#undef PSEUDO_END_ERRVAL
|
||||
#define PSEUDO_END_ERRVAL(name) END (name);
|
||||
|
||||
#undef ret_ERRVAL
|
||||
#define ret_ERRVAL ret
|
||||
|
||||
#endif /* __ASSEMBLER__ */
|
||||
|
||||
/* In order to get __set_errno() definition in INLINE_SYSCALL. */
|
||||
#ifndef __ASSEMBLER__
|
||||
#include <errno.h>
|
||||
#endif
|
||||
|
||||
#include <sysdeps/unix/sysdep.h>
|
||||
|
||||
#undef SYS_ify
|
||||
#define SYS_ify(syscall_name) __NR_##syscall_name
|
||||
|
||||
#ifndef __ASSEMBLER__
|
||||
|
||||
#define VDSO_NAME "LINUX_2.6"
|
||||
#define VDSO_HASH 61765110
|
||||
|
||||
/* List of system calls which are supported as vsyscalls. */
|
||||
#define HAVE_CLOCK_GETRES64_VSYSCALL "__vdso_clock_getres"
|
||||
#define HAVE_CLOCK_GETTIME64_VSYSCALL "__vdso_clock_gettime"
|
||||
#define HAVE_GETCPU_VSYSCALL "__vdso_getcpu"
|
||||
|
||||
#define HAVE_CLONE3_WRAPPER 1
|
||||
|
||||
#define INTERNAL_SYSCALL(name, nr, args...) \
|
||||
internal_syscall##nr (SYS_ify (name), args)
|
||||
|
||||
#define INTERNAL_SYSCALL_NCS(number, nr, args...) \
|
||||
internal_syscall##nr (number, args)
|
||||
|
||||
#define internal_syscall0(number, dummy...) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0"); \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "=r"(__a0) \
|
||||
: "r"(__a7) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall1(number, arg0) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall2(number, arg0, arg1) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall3(number, arg0, arg1, arg2) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
long int _arg2 = (long int) (arg2); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
register long int __a2 asm ("$a2") = _arg2; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1), "r"(__a2) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall4(number, arg0, arg1, arg2, arg3) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
long int _arg2 = (long int) (arg2); \
|
||||
long int _arg3 = (long int) (arg3); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
register long int __a2 asm ("$a2") = _arg2; \
|
||||
register long int __a3 asm ("$a3") = _arg3; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1), "r"(__a2), "r"(__a3) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall5(number, arg0, arg1, arg2, arg3, arg4) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
long int _arg2 = (long int) (arg2); \
|
||||
long int _arg3 = (long int) (arg3); \
|
||||
long int _arg4 = (long int) (arg4); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
register long int __a2 asm ("$a2") = _arg2; \
|
||||
register long int __a3 asm ("$a3") = _arg3; \
|
||||
register long int __a4 asm ("$a4") = _arg4; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1), "r"(__a2), \
|
||||
"r"(__a3), "r"(__a4) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall6(number, arg0, arg1, arg2, arg3, arg4, arg5) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
long int _arg2 = (long int) (arg2); \
|
||||
long int _arg3 = (long int) (arg3); \
|
||||
long int _arg4 = (long int) (arg4); \
|
||||
long int _arg5 = (long int) (arg5); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
register long int __a2 asm ("$a2") = _arg2; \
|
||||
register long int __a3 asm ("$a3") = _arg3; \
|
||||
register long int __a4 asm ("$a4") = _arg4; \
|
||||
register long int __a5 asm ("$a5") = _arg5; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1), "r"(__a2), "r"(__a3), \
|
||||
"r"(__a4), "r"(__a5) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define internal_syscall7(number, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \
|
||||
({ \
|
||||
long int _sys_result; \
|
||||
\
|
||||
{ \
|
||||
long int _arg0 = (long int) (arg0); \
|
||||
long int _arg1 = (long int) (arg1); \
|
||||
long int _arg2 = (long int) (arg2); \
|
||||
long int _arg3 = (long int) (arg3); \
|
||||
long int _arg4 = (long int) (arg4); \
|
||||
long int _arg5 = (long int) (arg5); \
|
||||
long int _arg6 = (long int) (arg6); \
|
||||
register long int __a7 asm ("$a7") = number; \
|
||||
register long int __a0 asm ("$a0") = _arg0; \
|
||||
register long int __a1 asm ("$a1") = _arg1; \
|
||||
register long int __a2 asm ("$a2") = _arg2; \
|
||||
register long int __a3 asm ("$a3") = _arg3; \
|
||||
register long int __a4 asm ("$a4") = _arg4; \
|
||||
register long int __a5 asm ("$a5") = _arg5; \
|
||||
register long int __a6 asm ("$a6") = _arg6; \
|
||||
__asm__ volatile ("syscall 0\n\t" \
|
||||
: "+r"(__a0) \
|
||||
: "r"(__a7), "r"(__a1), "r"(__a2), "r"(__a3), \
|
||||
"r"(__a4), "r"(__a5), "r"(__a6) \
|
||||
: __SYSCALL_CLOBBERS); \
|
||||
_sys_result = __a0; \
|
||||
} \
|
||||
_sys_result; \
|
||||
})
|
||||
|
||||
#define __SYSCALL_CLOBBERS \
|
||||
"$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7", "$t8", "memory"
|
||||
|
||||
extern long int __syscall_error (long int neg_errno);
|
||||
|
||||
#endif /* ! __ASSEMBLER__ */
|
||||
|
||||
/* Pointer mangling is not supported. */
|
||||
#define PTR_MANGLE(var) (void) (var)
|
||||
#define PTR_DEMANGLE(var) (void) (var)
|
||||
|
||||
#endif /* linux/loongarch/sysdep.h */
|
||||
|
|
@ -0,0 +1,50 @@
|
|||
/* vfork for Linux.
|
||||
Copyright (C) 2022 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
The GNU C Library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public License as
|
||||
published by the Free Software Foundation; either version 2.1 of the
|
||||
License, or (at your option) any later version.
|
||||
|
||||
The GNU C Library 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
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with the GNU C Library; if not, see
|
||||
<https://www.gnu.org/licenses/>. */
|
||||
|
||||
#include <sysdep.h>
|
||||
#define _ERRNO_H 1
|
||||
#include <bits/errno.h>
|
||||
|
||||
/* Clone the calling process, but without copying the whole address space.
|
||||
The calling process is suspended until the new process exits or is
|
||||
replaced by a call to `execve'. Return -1 for errors, 0 to the new process,
|
||||
and the process ID of the new process to the old process. */
|
||||
|
||||
ENTRY (__vfork)
|
||||
|
||||
li.d a0, 0x4111 /* CLONE_VM | CLONE_VFORK | SIGCHLD */
|
||||
add.d a1, zero, sp
|
||||
|
||||
/* Do the system call. */
|
||||
li.d a7, __NR_clone
|
||||
syscall 0
|
||||
|
||||
blt a0, zero ,L (error)
|
||||
|
||||
ret
|
||||
|
||||
L (error):
|
||||
b __syscall_error
|
||||
|
||||
END (__vfork)
|
||||
|
||||
libc_hidden_def (__vfork)
|
||||
|
||||
weak_alias (__vfork, vfork)
|
||||
strong_alias (__vfork, __libc_vfork)
|
||||
Loading…
Reference in New Issue