From mboxrd@z Thu Jan 1 00:00:00 1970 From: Adhemerval Zanella Date: Mon, 3 Jan 2022 15:21:58 -0300 Subject: [OpenRISC] [PATCH v4 08/13] or1k: Linux Syscall Interface In-Reply-To: <20211229044251.2203653-9-shorne@gmail.com> References: <20211229044251.2203653-1-shorne@gmail.com> <20211229044251.2203653-9-shorne@gmail.com> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: openrisc@lists.librecores.org LGTM, thanks. Reviewed-by: Adhemerval Zanella On 29/12/2021 01:42, Stafford Horne via Libc-alpha wrote: > --- > sysdeps/unix/sysv/linux/or1k/arch-syscall.h | 325 +++++++++++++++++++ > sysdeps/unix/sysv/linux/or1k/clone.c | 61 ++++ > sysdeps/unix/sysv/linux/or1k/mmap_internal.h | 28 ++ > sysdeps/unix/sysv/linux/or1k/or1k_clone.S | 89 +++++ > sysdeps/unix/sysv/linux/or1k/sysdep.c | 34 ++ > sysdeps/unix/sysv/linux/or1k/sysdep.h | 201 ++++++++++++ > 6 files changed, 738 insertions(+) > create mode 100644 sysdeps/unix/sysv/linux/or1k/arch-syscall.h > create mode 100644 sysdeps/unix/sysv/linux/or1k/clone.c > create mode 100644 sysdeps/unix/sysv/linux/or1k/mmap_internal.h > create mode 100644 sysdeps/unix/sysv/linux/or1k/or1k_clone.S > create mode 100644 sysdeps/unix/sysv/linux/or1k/sysdep.c > create mode 100644 sysdeps/unix/sysv/linux/or1k/sysdep.h > > diff --git a/sysdeps/unix/sysv/linux/or1k/arch-syscall.h b/sysdeps/unix/sysv/linux/or1k/arch-syscall.h > new file mode 100644 > index 0000000000..c6c3556137 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/arch-syscall.h > @@ -0,0 +1,325 @@ > +/* 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_adjtime64 405 > +#define __NR_clock_getres 114 > +#define __NR_clock_getres_time64 406 > +#define __NR_clock_gettime 113 > +#define __NR_clock_gettime64 403 > +#define __NR_clock_nanosleep 115 > +#define __NR_clock_nanosleep_time64 407 > +#define __NR_clock_settime 112 > +#define __NR_clock_settime64 404 > +#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_64 223 > +#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_fcntl64 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_fstat64 80 > +#define __NR_fstatat64 79 > +#define __NR_fstatfs64 44 > +#define __NR_fsync 82 > +#define __NR_ftruncate64 46 > +#define __NR_futex 98 > +#define __NR_futex_time64 422 > +#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_getrlimit 163 > +#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_pgetevents_time64 416 > +#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_llseek 62 > +#define __NR_lookup_dcookie 18 > +#define __NR_lremovexattr 15 > +#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_mmap2 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_timedreceive_time64 419 > +#define __NR_mq_timedsend 182 > +#define __NR_mq_timedsend_time64 418 > +#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_or1k_atomic 244 > +#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_ppoll_time64 414 > +#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_pselect6_time64 413 > +#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_recvmmsg_time64 417 > +#define __NR_recvmsg 212 > +#define __NR_remap_file_pages 234 > +#define __NR_removexattr 14 > +#define __NR_renameat 38 > +#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_sigtimedwait_time64 421 > +#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_rr_get_interval_time64 423 > +#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_semtimedop_time64 420 > +#define __NR_sendfile64 71 > +#define __NR_sendmmsg 269 > +#define __NR_sendmsg 211 > +#define __NR_sendto 206 > +#define __NR_set_mempolicy 237 > +#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_setrlimit 164 > +#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_statfs64 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_gettime64 408 > +#define __NR_timer_settime 110 > +#define __NR_timer_settime64 409 > +#define __NR_timerfd_create 85 > +#define __NR_timerfd_gettime 87 > +#define __NR_timerfd_gettime64 410 > +#define __NR_timerfd_settime 86 > +#define __NR_timerfd_settime64 411 > +#define __NR_times 153 > +#define __NR_tkill 130 > +#define __NR_truncate64 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_utimensat_time64 412 > +#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/or1k/clone.c b/sysdeps/unix/sysv/linux/or1k/clone.c > new file mode 100644 > index 0000000000..531fd17e29 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/clone.c > @@ -0,0 +1,61 @@ > +/* OpenRISC helper for the clone syscall. > + Copyright (C) 2021 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 > + . */ > + > +#include > +#include > + > +extern int __or1k_clone (int (*fn)(void *), void *child_stack, > + int flags, void *arg, pid_t *ptid, > + void *tls, pid_t *ctid); > + > + > +/* The OpenRISC ABI uses the stack for varargs like those using in clone > + but the linux syscall ABI uses registers. > + This function moves from varargs to regs. */ > +int > +__clone (int (*fn)(void *), void *child_stack, > + int flags, void *arg, ... > + /* pid_t *ptid, struct user_desc *tls, pid_t *ctid */ ) > +{ > + void *ptid; > + void *tls; > + void *ctid; > + va_list ap; > + int err; > + > + va_start (ap, arg); > + ptid = va_arg (ap, void *); > + tls = va_arg (ap, void *); > + ctid = va_arg (ap, void *); > + va_end (ap); > + > + /* Sanity check the arguments */ > + err = -EINVAL; > + if (!fn) > + goto syscall_error; > + if (!child_stack) > + goto syscall_error; > + > + return __or1k_clone (fn, child_stack, flags, arg, ptid, tls, ctid); > + > +syscall_error: > + __set_errno (-err); > + return -1; > +} > +libc_hidden_def (__clone) > +weak_alias (__clone, clone) > diff --git a/sysdeps/unix/sysv/linux/or1k/mmap_internal.h b/sysdeps/unix/sysv/linux/or1k/mmap_internal.h > new file mode 100644 > index 0000000000..817b841e5b > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/mmap_internal.h > @@ -0,0 +1,28 @@ > +/* Common mmap definition for Linux implementation. OpenRISC version. > + Copyright (C) 2021 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 > + . */ > + > +#ifndef MMAP_OR1K_INTERNAL_LINUX_H > +#define MMAP_OR1K_INTERNAL_LINUX_H > + > +/* OpenRISC Linux sets the page shift to 13 and mmap2 expects > + offsets to be provided in 8K pages. */ > +#define MMAP2_PAGE_UNIT 8192ULL > + > +#include_next > + > +#endif > diff --git a/sysdeps/unix/sysv/linux/or1k/or1k_clone.S b/sysdeps/unix/sysv/linux/or1k/or1k_clone.S > new file mode 100644 > index 0000000000..1f1db1acb2 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/or1k_clone.S > @@ -0,0 +1,89 @@ > +/* clone helper __or1k_clone for OpenRISC. > + Copyright (C) 2021 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, write to the Free > + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA > + 02111-1307 USA. */ > + > +#include > +#include > +#define __ASSEMBLY__ > +#include > + > + .text > +ENTRY (__or1k_clone) > + > + /* To handle GCC varargs we need to use our __clone wrapper to pop > + everything from the stack for us. > + Now everything is placed in the registers which saves us a lot > + of trouble. > + > + The userland implementation is: > + > + int clone (int (*fn)(void *), void *child_stack, > + int flags, void *arg, pid_t *ptid, > + struct user_desc *tls, pid_t *ctid); > + The kernel entry is: > + > + int clone (long flags, void *child_stack, int *parent_tid, > + int *child_tid, struct void *tls) > + > + NB: tls isn't really an argument, it is read from r7 directly. */ > + > + /* First, align the stack to 4 bytes. */ > + l.xori r11, r0, -4 > + l.and r4, r4, r11 > + > + /* Put 'fn', 'arg' and 'flags' on the child stack. */ > + l.addi r4, r4, -12 > + l.sw 8(r4), r3 > + l.sw 4(r4), r6 > + l.sw 0(r4), r5 > + > + l.ori r3, r5, 0 > + /* The child_stack is already in r4. */ > + l.ori r5, r7, 0 > + l.lwz r6, 0(r1) > + l.ori r7, r8, 0 > + > + DO_CALL (clone) > + > + l.sfgeui r11, 0xf001 > + l.bf L(error) > + l.nop > + > + /* If we are not the child, return the pid. */ > + l.sfeqi r11, 0 > + l.bf L(thread_start) > + l.nop > + > + l.jr r9 > + l.nop > + > +L(thread_start): > + /* Load function from stack. */ > + l.lwz r11, 8(r1) > + l.jalr r11 > + l.lwz r3, 4(r1) > + > + /* Exit the child thread. */ > + l.ori r3, r11, 0 > + DO_CALL (exit) > + > +L(error): > + l.j SYSCALL_ERROR_NAME > + l.ori r3, r11, 0 > + > +END (__or1k_clone) > diff --git a/sysdeps/unix/sysv/linux/or1k/sysdep.c b/sysdeps/unix/sysv/linux/or1k/sysdep.c > new file mode 100644 > index 0000000000..1130cba687 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/sysdep.c > @@ -0,0 +1,34 @@ > +/* OpenRISC wrapper for setting errno. > + Copyright (C) 2021 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 > + . */ > + > +#include > +#include > + > +long int __syscall_error (long int err); > +hidden_proto (__syscall_error) > + > +/* This routine is jumped to by all the syscall handlers, to stash > + an error number into errno. */ > +long int > +__syscall_error (long int err) > +{ > + __set_errno (- err); > + return -1; > +} > +hidden_def (__syscall_error) > diff --git a/sysdeps/unix/sysv/linux/or1k/sysdep.h b/sysdeps/unix/sysv/linux/or1k/sysdep.h > new file mode 100644 > index 0000000000..5dd6da48a1 > --- /dev/null > +++ b/sysdeps/unix/sysv/linux/or1k/sysdep.h > @@ -0,0 +1,201 @@ > +/* Assembler and syscall macros. OpenRISC version. > + Copyright (C) 2021 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 > + . */ > + > +#ifndef _LINUX_OR1K_SYSDEP_H > +#define _LINUX_OR1K_SYSDEP_H 1 > + > +#include > +#include > +#include > + > +/* "workarounds" for generic code needing to handle 64-bit time_t. */ > + > +#undef __NR_clock_getres > +#undef __NR_futex > +#undef __NR_ppoll > +#undef __NR_pselect6 > +#undef __NR_recvmmsg > +#undef __NR_rt_sigtimedwait > +#undef __NR_semtimedop > +#undef __NR_utimensat > + > +/* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */ > +#define __NR_clock_getres __NR_clock_getres_time64 > +/* Fix sysdeps/nptl/lowlevellock-futex.h. */ > +#define __NR_futex __NR_futex_time64 > +/* Fix sysdeps/unix/sysv/linux/pause.c. */ > +#define __NR_ppoll __NR_ppoll_time64 > +/* Fix sysdeps/unix/sysv/linux/select.c. */ > +#define __NR_pselect6 __NR_pselect6_time64 > +/* Fix sysdeps/unix/sysv/linux/recvmmsg.c. */ > +#define __NR_recvmmsg __NR_recvmmsg_time64 > +/* Fix sysdeps/unix/sysv/linux/sigtimedwait.c. */ > +#define __NR_rt_sigtimedwait __NR_rt_sigtimedwait_time64 > +/* Fix sysdeps/unix/sysv/linux/semtimedop.c. */ > +#define __NR_semtimedop __NR_semtimedop_time64 > +/* Hack sysdeps/unix/sysv/linux/generic/utimes.c. */ > +#define __NR_utimensat __NR_utimensat_time64 > + > +#undef SYS_ify > +#define SYS_ify(syscall_name) (__NR_##syscall_name) > + > +/* Linux uses a negative return value to indicate syscall errors, > + unlike most Unices, which use the condition codes' carry flag. > + > + Since version 2.1 the return value of a system call might be > + negative even if the call succeeded. E.g., the lseek system call > + might return a large offset. Therefore we must not anymore test > + for < 0, but test for a real error by making sure the value in R0 > + is a real error number. Linus said he will make sure the no syscall > + returns a value in -1 .. -4095 as a valid result so we can safely > + test with -4095. */ > + > +#ifdef __ASSEMBLER__ > + > +/* Macros used in syscall-template.S */ > +#define ret l.jr r9; l.nop > +#define ret_NOERRNO l.jr r9; l.nop > + > +#undef DO_CALL > +#define DO_CALL(syscall_name) \ > + l.addi r11, r0, SYS_ify (syscall_name); \ > + l.sys 1; \ > + l.nop > + > +#undef PSEUDO > +#define PSEUDO(name, syscall_name, args) \ > + ENTRY (name); \ > + DO_CALL(syscall_name); \ > + /* if -4096 < ret < 0 holds, it's an error */ \ > + l.sfgeui r11, 0xf001; \ > + l.bf L(pseudo_end); \ > + l.nop > + > +#undef PSEUDO_NOERRNO > +#define PSEUDO_NOERRNO(name, syscall_name, args) \ > + ENTRY (name); \ > + DO_CALL(syscall_name) > + > +#undef PSEUDO_END > +#define PSEUDO_END(name) \ > +L(pseudo_end): \ > + l.j SYSCALL_ERROR_NAME; \ > + l.ori r3,r11,0; \ > + END (name) > + > +#undef PSEUDO_END_NOERRNO > +#define PSEUDO_END_NOERRNO(name) \ > + END (name) > + > +#ifndef PIC > +/* For static code, on error jump to __syscall_error directly. */ > +# define SYSCALL_ERROR_NAME __syscall_error > +#elif !IS_IN (libc) > +/* Use the internal name for libc shared objects. */ > +# define SYSCALL_ERROR_NAME __GI___syscall_error > +#else > +/* Otherwise, on error do a full PLT jump. */ > +# define SYSCALL_ERROR_NAME plt(__syscall_error) > +#endif > + > +#else /* not __ASSEMBLER__ */ > + > +#include > + > +extern long int __syscall_error (long int neg_errno); > + > +/* Pointer mangling is not yet supported for or1k. */ > +#define PTR_MANGLE(var) (void) (var) > +#define PTR_DEMANGLE(var) (void) (var) > + > +#undef INTERNAL_SYSCALL > +#define INTERNAL_SYSCALL(name, nr, args...) \ > + INTERNAL_SYSCALL_NCS (SYS_ify (name), nr, args) > + > +/* The _NCS variant allows non-constant syscall numbers. */ > +#undef INTERNAL_SYSCALL_NCS > +#define INTERNAL_SYSCALL_NCS(number, nr, args...) \ > + ({ unsigned long int __sys_result; \ > + { \ > + long int _sc_ret = (long int) number; \ > + LOAD_ARGS_##nr (args) \ > + register long int __sc_ret __asm__ ("r11") = _sc_ret; \ > + __asm__ __volatile__ ("l.sys 1\n\t" \ > + " l.nop\n\t" \ > + : "+r" (__sc_ret) \ > + : ASM_ARGS_##nr \ > + : ASM_CLOBBERS_##nr \ > + "r12", "r13", "r15", "r17", "r19", \ > + "r21", "r23", "r25", "r27", "r29", \ > + "r31", "memory"); \ > + __sys_result = __sc_ret; \ > + } \ > + (long int) __sys_result; }) > + > +/* From here on we have nested macros that generate code for > + setting up syscall arguments. */ > + > +#define LOAD_ARGS_0() > + > +#define ASM_ARGS_0 > +#define ASM_CLOBBERS_0 "r3", ASM_CLOBBERS_1 > + > +#define LOAD_ARGS_1(a) \ > + long int _a = (long int)(a); \ > + register long int __a __asm__ ("r3") = _a; > +#define ASM_ARGS_1 "r" (__a) > +#define ASM_CLOBBERS_1 "r4", ASM_CLOBBERS_2 > + > +#define LOAD_ARGS_2(a, b) \ > + long int _b = (long int)(b); \ > + LOAD_ARGS_1 (a) \ > + register long int __b __asm__ ("r4") = _b; > +#define ASM_ARGS_2 ASM_ARGS_1, "r" (__b) > +#define ASM_CLOBBERS_2 "r5", ASM_CLOBBERS_3 > + > +#define LOAD_ARGS_3(a, b, c) \ > + long int _c = (long int)(c); \ > + LOAD_ARGS_2 (a, b) \ > + register long int __c __asm__ ("r5") = _c; > +#define ASM_ARGS_3 ASM_ARGS_2, "r" (__c) > +#define ASM_CLOBBERS_3 "r6", ASM_CLOBBERS_4 > + > +#define LOAD_ARGS_4(a, b, c, d) \ > + LOAD_ARGS_3 (a, b, c) \ > + long int _d = (long int)(d); \ > + register long int __d __asm__ ("r6") = _d; > +#define ASM_ARGS_4 ASM_ARGS_3, "r" (__d) > +#define ASM_CLOBBERS_4 "r7", ASM_CLOBBERS_5 > + > +#define LOAD_ARGS_5(a, b, c, d, e) \ > + long int _e = (long int)(e); \ > + LOAD_ARGS_4 (a, b, c, d) \ > + register long int __e __asm__ ("r7") = _e; > +#define ASM_ARGS_5 ASM_ARGS_4, "r" (__e) > +#define ASM_CLOBBERS_5 "r8", ASM_CLOBBERS_6 > + > +#define LOAD_ARGS_6(a, b, c, d, e, f) \ > + long int _f = (long int)(f); \ > + LOAD_ARGS_5 (a, b, c, d, e) \ > + register long int __f __asm__ ("r8") = _f; > +#define ASM_ARGS_6 ASM_ARGS_5, "r" (__f) > +#define ASM_CLOBBERS_6 > + > +#endif /* not __ASSEMBLER__ */ > + > +#endif /* linux/or1k/sysdep.h */