diff options
| -rw-r--r-- | sysdeps/loongarch/abort-instr.h | 2 | ||||
| -rw-r--r-- | sysdeps/loongarch/hp-timing.h | 42 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/arch-syscall.h | 301 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/clone.S | 96 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/clone3.S | 83 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/sysdep.S | 53 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/sysdep.h | 320 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/vfork.S | 50 |
8 files changed, 947 insertions, 0 deletions
diff --git a/sysdeps/loongarch/abort-instr.h b/sysdeps/loongarch/abort-instr.h new file mode 100644 index 0000000..46d3ad0 --- /dev/null +++ b/sysdeps/loongarch/abort-instr.h @@ -0,0 +1,2 @@ +/* An instruction which should crash any program is a breakpoint. */ +#define ABORT_INSTRUCTION asm ("break 0") diff --git a/sysdeps/loongarch/hp-timing.h b/sysdeps/loongarch/hp-timing.h new file mode 100644 index 0000000..af1da81 --- /dev/null +++ b/sysdeps/loongarch/hp-timing.h @@ -0,0 +1,42 @@ +/* High precision, low overhead timing functions. + 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 _HP_TIMING_H +#define _HP_TIMING_H 1 + +/* We always assume having the timestamp register. */ +#define HP_TIMING_AVAIL (1) +#define HP_SMALL_TIMING_AVAIL (1) + +/* We indeed have inlined functions. */ +#define HP_TIMING_INLINE (1) + +/* We use 64bit values for the times. */ +typedef unsigned long long int hp_timing_t; + +/* Read the stable counter. */ +#define HP_TIMING_NOW(Var) \ + ({ \ + unsigned long long int _count; \ + asm volatile ("rdtime.d\t%0,$r0" : "=r" (_count)); \ + (Var) = _count; \ + }) + +#include <hp-timing-common.h> + +#endif /* hp-timing.h */ diff --git a/sysdeps/unix/sysv/linux/loongarch/arch-syscall.h b/sysdeps/unix/sysv/linux/loongarch/arch-syscall.h new file mode 100644 index 0000000..6bb3c8a --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/arch-syscall.h @@ -0,0 +1,301 @@ +/* AUTOGENERATED by update-syscall-lists.py. */ +#define __NR_accept 202 +#define __NR_accept4 242 +#define __NR_acct 89 +#define __NR_add_key 217 +#define __NR_adjtimex 171 +#define __NR_bind 200 +#define __NR_bpf 280 +#define __NR_brk 214 +#define __NR_capget 90 +#define __NR_capset 91 +#define __NR_chdir 49 +#define __NR_chroot 51 +#define __NR_clock_adjtime 266 +#define __NR_clock_getres 114 +#define __NR_clock_gettime 113 +#define __NR_clock_nanosleep 115 +#define __NR_clock_settime 112 +#define __NR_clone 220 +#define __NR_clone3 435 +#define __NR_close 57 +#define __NR_close_range 436 +#define __NR_connect 203 +#define __NR_copy_file_range 285 +#define __NR_delete_module 106 +#define __NR_dup 23 +#define __NR_dup3 24 +#define __NR_epoll_create1 20 +#define __NR_epoll_ctl 21 +#define __NR_epoll_pwait 22 +#define __NR_epoll_pwait2 441 +#define __NR_eventfd2 19 +#define __NR_execve 221 +#define __NR_execveat 281 +#define __NR_exit 93 +#define __NR_exit_group 94 +#define __NR_faccessat 48 +#define __NR_faccessat2 439 +#define __NR_fadvise64 223 +#define __NR_fallocate 47 +#define __NR_fanotify_init 262 +#define __NR_fanotify_mark 263 +#define __NR_fchdir 50 +#define __NR_fchmod 52 +#define __NR_fchmodat 53 +#define __NR_fchown 55 +#define __NR_fchownat 54 +#define __NR_fcntl 25 +#define __NR_fdatasync 83 +#define __NR_fgetxattr 10 +#define __NR_finit_module 273 +#define __NR_flistxattr 13 +#define __NR_flock 32 +#define __NR_fremovexattr 16 +#define __NR_fsconfig 431 +#define __NR_fsetxattr 7 +#define __NR_fsmount 432 +#define __NR_fsopen 430 +#define __NR_fspick 433 +#define __NR_fstatfs 44 +#define __NR_fsync 82 +#define __NR_ftruncate 46 +#define __NR_futex 98 +#define __NR_futex_waitv 449 +#define __NR_get_mempolicy 236 +#define __NR_get_robust_list 100 +#define __NR_getcpu 168 +#define __NR_getcwd 17 +#define __NR_getdents64 61 +#define __NR_getegid 177 +#define __NR_geteuid 175 +#define __NR_getgid 176 +#define __NR_getgroups 158 +#define __NR_getitimer 102 +#define __NR_getpeername 205 +#define __NR_getpgid 155 +#define __NR_getpid 172 +#define __NR_getppid 173 +#define __NR_getpriority 141 +#define __NR_getrandom 278 +#define __NR_getresgid 150 +#define __NR_getresuid 148 +#define __NR_getrusage 165 +#define __NR_getsid 156 +#define __NR_getsockname 204 +#define __NR_getsockopt 209 +#define __NR_gettid 178 +#define __NR_gettimeofday 169 +#define __NR_getuid 174 +#define __NR_getxattr 8 +#define __NR_init_module 105 +#define __NR_inotify_add_watch 27 +#define __NR_inotify_init1 26 +#define __NR_inotify_rm_watch 28 +#define __NR_io_cancel 3 +#define __NR_io_destroy 1 +#define __NR_io_getevents 4 +#define __NR_io_pgetevents 292 +#define __NR_io_setup 0 +#define __NR_io_submit 2 +#define __NR_io_uring_enter 426 +#define __NR_io_uring_register 427 +#define __NR_io_uring_setup 425 +#define __NR_ioctl 29 +#define __NR_ioprio_get 31 +#define __NR_ioprio_set 30 +#define __NR_kcmp 272 +#define __NR_kexec_file_load 294 +#define __NR_kexec_load 104 +#define __NR_keyctl 219 +#define __NR_kill 129 +#define __NR_landlock_add_rule 445 +#define __NR_landlock_create_ruleset 444 +#define __NR_landlock_restrict_self 446 +#define __NR_lgetxattr 9 +#define __NR_linkat 37 +#define __NR_listen 201 +#define __NR_listxattr 11 +#define __NR_llistxattr 12 +#define __NR_lookup_dcookie 18 +#define __NR_lremovexattr 15 +#define __NR_lseek 62 +#define __NR_lsetxattr 6 +#define __NR_madvise 233 +#define __NR_mbind 235 +#define __NR_membarrier 283 +#define __NR_memfd_create 279 +#define __NR_migrate_pages 238 +#define __NR_mincore 232 +#define __NR_mkdirat 34 +#define __NR_mknodat 33 +#define __NR_mlock 228 +#define __NR_mlock2 284 +#define __NR_mlockall 230 +#define __NR_mmap 222 +#define __NR_mount 40 +#define __NR_mount_setattr 442 +#define __NR_move_mount 429 +#define __NR_move_pages 239 +#define __NR_mprotect 226 +#define __NR_mq_getsetattr 185 +#define __NR_mq_notify 184 +#define __NR_mq_open 180 +#define __NR_mq_timedreceive 183 +#define __NR_mq_timedsend 182 +#define __NR_mq_unlink 181 +#define __NR_mremap 216 +#define __NR_msgctl 187 +#define __NR_msgget 186 +#define __NR_msgrcv 188 +#define __NR_msgsnd 189 +#define __NR_msync 227 +#define __NR_munlock 229 +#define __NR_munlockall 231 +#define __NR_munmap 215 +#define __NR_name_to_handle_at 264 +#define __NR_nanosleep 101 +#define __NR_nfsservctl 42 +#define __NR_open_by_handle_at 265 +#define __NR_open_tree 428 +#define __NR_openat 56 +#define __NR_openat2 437 +#define __NR_perf_event_open 241 +#define __NR_personality 92 +#define __NR_pidfd_getfd 438 +#define __NR_pidfd_open 434 +#define __NR_pidfd_send_signal 424 +#define __NR_pipe2 59 +#define __NR_pivot_root 41 +#define __NR_pkey_alloc 289 +#define __NR_pkey_free 290 +#define __NR_pkey_mprotect 288 +#define __NR_ppoll 73 +#define __NR_prctl 167 +#define __NR_pread64 67 +#define __NR_preadv 69 +#define __NR_preadv2 286 +#define __NR_prlimit64 261 +#define __NR_process_madvise 440 +#define __NR_process_mrelease 448 +#define __NR_process_vm_readv 270 +#define __NR_process_vm_writev 271 +#define __NR_pselect6 72 +#define __NR_ptrace 117 +#define __NR_pwrite64 68 +#define __NR_pwritev 70 +#define __NR_pwritev2 287 +#define __NR_quotactl 60 +#define __NR_quotactl_fd 443 +#define __NR_read 63 +#define __NR_readahead 213 +#define __NR_readlinkat 78 +#define __NR_readv 65 +#define __NR_reboot 142 +#define __NR_recvfrom 207 +#define __NR_recvmmsg 243 +#define __NR_recvmsg 212 +#define __NR_remap_file_pages 234 +#define __NR_removexattr 14 +#define __NR_renameat2 276 +#define __NR_request_key 218 +#define __NR_restart_syscall 128 +#define __NR_rseq 293 +#define __NR_rt_sigaction 134 +#define __NR_rt_sigpending 136 +#define __NR_rt_sigprocmask 135 +#define __NR_rt_sigqueueinfo 138 +#define __NR_rt_sigreturn 139 +#define __NR_rt_sigsuspend 133 +#define __NR_rt_sigtimedwait 137 +#define __NR_rt_tgsigqueueinfo 240 +#define __NR_sched_get_priority_max 125 +#define __NR_sched_get_priority_min 126 +#define __NR_sched_getaffinity 123 +#define __NR_sched_getattr 275 +#define __NR_sched_getparam 121 +#define __NR_sched_getscheduler 120 +#define __NR_sched_rr_get_interval 127 +#define __NR_sched_setaffinity 122 +#define __NR_sched_setattr 274 +#define __NR_sched_setparam 118 +#define __NR_sched_setscheduler 119 +#define __NR_sched_yield 124 +#define __NR_seccomp 277 +#define __NR_semctl 191 +#define __NR_semget 190 +#define __NR_semop 193 +#define __NR_semtimedop 192 +#define __NR_sendfile 71 +#define __NR_sendmmsg 269 +#define __NR_sendmsg 211 +#define __NR_sendto 206 +#define __NR_set_mempolicy 237 +#define __NR_set_mempolicy_home_node 450 +#define __NR_set_robust_list 99 +#define __NR_set_tid_address 96 +#define __NR_setdomainname 162 +#define __NR_setfsgid 152 +#define __NR_setfsuid 151 +#define __NR_setgid 144 +#define __NR_setgroups 159 +#define __NR_sethostname 161 +#define __NR_setitimer 103 +#define __NR_setns 268 +#define __NR_setpgid 154 +#define __NR_setpriority 140 +#define __NR_setregid 143 +#define __NR_setresgid 149 +#define __NR_setresuid 147 +#define __NR_setreuid 145 +#define __NR_setsid 157 +#define __NR_setsockopt 208 +#define __NR_settimeofday 170 +#define __NR_setuid 146 +#define __NR_setxattr 5 +#define __NR_shmat 196 +#define __NR_shmctl 195 +#define __NR_shmdt 197 +#define __NR_shmget 194 +#define __NR_shutdown 210 +#define __NR_sigaltstack 132 +#define __NR_signalfd4 74 +#define __NR_socket 198 +#define __NR_socketpair 199 +#define __NR_splice 76 +#define __NR_statfs 43 +#define __NR_statx 291 +#define __NR_swapoff 225 +#define __NR_swapon 224 +#define __NR_symlinkat 36 +#define __NR_sync 81 +#define __NR_sync_file_range 84 +#define __NR_syncfs 267 +#define __NR_sysinfo 179 +#define __NR_syslog 116 +#define __NR_tee 77 +#define __NR_tgkill 131 +#define __NR_timer_create 107 +#define __NR_timer_delete 111 +#define __NR_timer_getoverrun 109 +#define __NR_timer_gettime 108 +#define __NR_timer_settime 110 +#define __NR_timerfd_create 85 +#define __NR_timerfd_gettime 87 +#define __NR_timerfd_settime 86 +#define __NR_times 153 +#define __NR_tkill 130 +#define __NR_truncate 45 +#define __NR_umask 166 +#define __NR_umount2 39 +#define __NR_uname 160 +#define __NR_unlinkat 35 +#define __NR_unshare 97 +#define __NR_userfaultfd 282 +#define __NR_utimensat 88 +#define __NR_vhangup 58 +#define __NR_vmsplice 75 +#define __NR_wait4 260 +#define __NR_waitid 95 +#define __NR_write 64 +#define __NR_writev 66 diff --git a/sysdeps/unix/sysv/linux/loongarch/clone.S b/sysdeps/unix/sysv/linux/loongarch/clone.S new file mode 100644 index 0000000..c73245b --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/clone.S @@ -0,0 +1,96 @@ +/* The clone 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/>. */ + +/* clone() 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 clone(int (*fn)(void *arg), void *child_stack, int flags, void *arg, + void *parent_tidptr, void *tls, void *child_tidptr) */ + +ENTRY (__clone) + + /* Align stack to 16. */ + BSTRINS a1, zero, 3, 0 + + /* Sanity check arguments. */ + beqz a0, L (invalid) /* No NULL function pointers. */ + beqz a1, L (invalid) /* No NULL stack pointers. */ + + ADDI a1, a1, -16 /* Reserve argument save space. */ + REG_S a0, a1, 0 /* Save function pointer. */ + REG_S a3, a1, SZREG /* Save argument pointer. */ + + /* The syscall expects the args to be in different slots. */ + or a0, a2, zero + or a2, a4, zero + or a3, a6, zero + or a4, a5, zero + + /* Do the system call. */ + LI a7,__NR_clone + syscall 0 + + blt a0, zero ,L (error) + beqz a0,L (thread_start) + + /* Successful return from the parent. */ + ret + +L (invalid): + LI a0, -EINVAL + + /* Something bad happened -- no child created. */ +L (error): + b __syscall_error + +END (__clone) + +/* 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_start) +L (thread_start): + +/* Terminate call stack by noting ra is undefined. Use a dummy + .cfi_label to force starting the FDE. */ + .cfi_label .Ldummy + cfi_undefined (1) + + /* Restore the arg for user's function. */ + REG_L a1, sp, 0 /* Function pointer. */ + REG_L a0, sp, SZREG /* Argument pointer. */ + + /* Call the user's function. */ + jirl ra, a1, 0 + + /* Call exit with the function's return value. */ + LI a7, __NR_exit + syscall 0 + + END (__thread_start) + +libc_hidden_def (__clone) +weak_alias (__clone, clone) diff --git a/sysdeps/unix/sysv/linux/loongarch/clone3.S b/sysdeps/unix/sysv/linux/loongarch/clone3.S new file mode 100644 index 0000000..38be4c8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/clone3.S @@ -0,0 +1,83 @@ +/* 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) diff --git a/sysdeps/unix/sysv/linux/loongarch/sysdep.S b/sysdeps/unix/sysv/linux/loongarch/sysdep.S new file mode 100644 index 0000000..a4db2a9 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/sysdep.S @@ -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) diff --git a/sysdeps/unix/sysv/linux/loongarch/sysdep.h b/sysdeps/unix/sysv/linux/loongarch/sysdep.h new file mode 100644 index 0000000..c586df8 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/sysdep.h @@ -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 */ diff --git a/sysdeps/unix/sysv/linux/loongarch/vfork.S b/sysdeps/unix/sysv/linux/loongarch/vfork.S new file mode 100644 index 0000000..fcc84e3 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/vfork.S @@ -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) |