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ftmemsim-valgrind/coregrind/m_syswrap/priv_syswrap-linux.h
Earl Chew d387566dd7 Support Linux syscall 434 pidfd_open
2023-04-14 23:06:48 +02:00

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/*--------------------------------------------------------------------*/
/*--- Linux-specific syscalls stuff. priv_syswrap-linux.h ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2017 Nicholas Nethercote
njn@valgrind.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see <http://www.gnu.org/licenses/>.
The GNU General Public License is contained in the file COPYING.
*/
#ifndef __PRIV_SYSWRAP_LINUX_H
#define __PRIV_SYSWRAP_LINUX_H
#include "pub_core_basics.h" // ThreadId
#include "priv_types_n_macros.h" // DECL_TEMPLATE
// Clone-related functions
extern Word ML_(start_thread_NORETURN) ( void* arg );
extern Addr ML_(allocstack) ( ThreadId tid );
extern void ML_(call_on_new_stack_0_1) ( Addr stack, Addr retaddr,
void (*f)(Word), Word arg1 );
// Linux-specific (but non-arch-specific) syscalls
DECL_TEMPLATE(linux, sys_clone)
DECL_TEMPLATE(linux, sys_mount);
DECL_TEMPLATE(linux, sys_oldumount);
DECL_TEMPLATE(linux, sys_umount);
DECL_TEMPLATE(linux, sys_perf_event_open);
DECL_TEMPLATE(linux, sys_preadv);
DECL_TEMPLATE(linux, sys_preadv2);
DECL_TEMPLATE(linux, sys_pwritev);
DECL_TEMPLATE(linux, sys_pwritev2);
DECL_TEMPLATE(linux, sys_sendmmsg);
DECL_TEMPLATE(linux, sys_recvmmsg);
DECL_TEMPLATE(linux, sys_dup3);
DECL_TEMPLATE(linux, sys_getcpu);
DECL_TEMPLATE(linux, sys_splice);
DECL_TEMPLATE(linux, sys_tee);
DECL_TEMPLATE(linux, sys_vmsplice);
DECL_TEMPLATE(linux, sys_readahead);
DECL_TEMPLATE(linux, sys_move_pages);
// clone is similar enough between linux variants to have a generic
// version, but which will call an extern defined in syswrap-<platform>-linux.c
DECL_TEMPLATE(linux, sys_clone);
// POSIX, but various sub-cases differ between Linux and Darwin.
DECL_TEMPLATE(linux, sys_fcntl);
DECL_TEMPLATE(linux, sys_fcntl64);
DECL_TEMPLATE(linux, sys_ioctl);
DECL_TEMPLATE(linux, sys_setfsuid16);
DECL_TEMPLATE(linux, sys_setfsuid);
DECL_TEMPLATE(linux, sys_setfsgid16);
DECL_TEMPLATE(linux, sys_setfsgid);
DECL_TEMPLATE(linux, sys_setresuid16); // man page says "non-standard";
DECL_TEMPLATE(linux, sys_setresuid); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_getresuid16);
DECL_TEMPLATE(linux, sys_getresuid);
DECL_TEMPLATE(linux, sys_setresgid16); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_setresgid); // man page says "non-standard"
DECL_TEMPLATE(linux, sys_getresgid16);
DECL_TEMPLATE(linux, sys_getresgid);
DECL_TEMPLATE(linux, sys_exit_group);
DECL_TEMPLATE(linux, sys_llseek);
DECL_TEMPLATE(linux, sys_adjtimex);
DECL_TEMPLATE(linux, sys_ioperm);
DECL_TEMPLATE(linux, sys_syslog);
DECL_TEMPLATE(linux, sys_vhangup);
DECL_TEMPLATE(linux, sys_sysinfo);
DECL_TEMPLATE(linux, sys_personality);
DECL_TEMPLATE(linux, sys_pivot_root);
DECL_TEMPLATE(linux, sys_sysctl);
DECL_TEMPLATE(linux, sys_prctl);
DECL_TEMPLATE(linux, sys_sendfile);
DECL_TEMPLATE(linux, sys_sendfile64);
DECL_TEMPLATE(linux, sys_futex);
DECL_TEMPLATE(linux, sys_set_robust_list);
DECL_TEMPLATE(linux, sys_get_robust_list);
DECL_TEMPLATE(linux, sys_pselect6);
DECL_TEMPLATE(linux, sys_ppoll);
DECL_TEMPLATE(linux, sys_epoll_create);
DECL_TEMPLATE(linux, sys_epoll_create1);
DECL_TEMPLATE(linux, sys_epoll_ctl);
DECL_TEMPLATE(linux, sys_epoll_wait);
DECL_TEMPLATE(linux, sys_epoll_pwait);
DECL_TEMPLATE(linux, sys_eventfd);
DECL_TEMPLATE(linux, sys_eventfd2);
DECL_TEMPLATE(linux, sys_fallocate);
DECL_TEMPLATE(linux, sys_prlimit64);
DECL_TEMPLATE(linux, sys_gettid);
DECL_TEMPLATE(linux, sys_set_tid_address);
DECL_TEMPLATE(linux, sys_tkill);
DECL_TEMPLATE(linux, sys_tgkill);
DECL_TEMPLATE(linux, sys_fadvise64);
DECL_TEMPLATE(linux, sys_fadvise64_64);
DECL_TEMPLATE(linux, sys_io_setup);
DECL_TEMPLATE(linux, sys_io_destroy);
DECL_TEMPLATE(linux, sys_io_getevents);
DECL_TEMPLATE(linux, sys_io_submit);
DECL_TEMPLATE(linux, sys_io_cancel);
DECL_TEMPLATE(linux, sys_ioprio_set);
DECL_TEMPLATE(linux, sys_ioprio_get);
DECL_TEMPLATE(linux, sys_mbind);
DECL_TEMPLATE(linux, sys_set_mempolicy);
DECL_TEMPLATE(linux, sys_get_mempolicy);
DECL_TEMPLATE(linux, sys_inotify_init);
DECL_TEMPLATE(linux, sys_inotify_init1);
DECL_TEMPLATE(linux, sys_inotify_add_watch);
DECL_TEMPLATE(linux, sys_inotify_rm_watch);
DECL_TEMPLATE(linux, sys_mq_open);
DECL_TEMPLATE(linux, sys_mq_unlink);
DECL_TEMPLATE(linux, sys_mq_timedsend);
DECL_TEMPLATE(linux, sys_mq_timedreceive);
DECL_TEMPLATE(linux, sys_mq_notify);
DECL_TEMPLATE(linux, sys_mq_getsetattr);
DECL_TEMPLATE(linux, sys_clock_settime);
DECL_TEMPLATE(linux, sys_clock_gettime);
DECL_TEMPLATE(linux, sys_clock_getres);
DECL_TEMPLATE(linux, sys_clock_nanosleep);
DECL_TEMPLATE(linux, sys_clock_adjtime);
DECL_TEMPLATE(linux, sys_timer_create); // Linux: varies across archs?
DECL_TEMPLATE(linux, sys_timer_settime);
DECL_TEMPLATE(linux, sys_timer_gettime);
DECL_TEMPLATE(linux, sys_timer_getoverrun);
DECL_TEMPLATE(linux, sys_timer_delete);
DECL_TEMPLATE(linux, sys_timerfd_create);
DECL_TEMPLATE(linux, sys_timerfd_gettime);
DECL_TEMPLATE(linux, sys_timerfd_settime);
DECL_TEMPLATE(linux, sys_signalfd);
DECL_TEMPLATE(linux, sys_signalfd4);
DECL_TEMPLATE(linux, sys_capget);
DECL_TEMPLATE(linux, sys_capset);
DECL_TEMPLATE(linux, sys_openat);
DECL_TEMPLATE(linux, sys_mkdirat);
DECL_TEMPLATE(linux, sys_mknodat);
DECL_TEMPLATE(linux, sys_fchownat);
DECL_TEMPLATE(linux, sys_futimesat);
DECL_TEMPLATE(linux, sys_newfstatat);
DECL_TEMPLATE(linux, sys_unlinkat);
DECL_TEMPLATE(linux, sys_renameat);
DECL_TEMPLATE(linux, sys_renameat2);
DECL_TEMPLATE(linux, sys_linkat);
DECL_TEMPLATE(linux, sys_symlinkat);
DECL_TEMPLATE(linux, sys_readlinkat);
DECL_TEMPLATE(linux, sys_fchmodat);
DECL_TEMPLATE(linux, sys_faccessat);
DECL_TEMPLATE(linux, sys_faccessat2);
DECL_TEMPLATE(linux, sys_utimensat);
DECL_TEMPLATE(linux, sys_name_to_handle_at);
DECL_TEMPLATE(linux, sys_open_by_handle_at);
DECL_TEMPLATE(linux, sys_add_key);
DECL_TEMPLATE(linux, sys_request_key);
DECL_TEMPLATE(linux, sys_keyctl);
// These ones have 32-bit generic equivalents, but the 16-bit versions (they
// use 16-bit gid_t and uid_t types) seem to be Linux-specific.
DECL_TEMPLATE(linux, sys_getuid16);
DECL_TEMPLATE(linux, sys_setuid16);
DECL_TEMPLATE(linux, sys_getgid16);
DECL_TEMPLATE(linux, sys_setgid16);
DECL_TEMPLATE(linux, sys_geteuid16);
DECL_TEMPLATE(linux, sys_getegid16);
DECL_TEMPLATE(linux, sys_setreuid16);
DECL_TEMPLATE(linux, sys_setregid16);
DECL_TEMPLATE(linux, sys_getgroups16);
DECL_TEMPLATE(linux, sys_setgroups16);
// Again, these 16-bit versions are Linux-specific, the 32-bit versions are
// generic.
DECL_TEMPLATE(linux, sys_chown16);
DECL_TEMPLATE(linux, sys_fchown16);
//DECL_TEMPLATE(linux, sys_lchown16); // not yet encountered
// Are these POSIX? In Darwin they have an extra parameter 'position',
// so put them here.
DECL_TEMPLATE(linux, sys_setxattr);
DECL_TEMPLATE(linux, sys_lsetxattr);
DECL_TEMPLATE(linux, sys_fsetxattr);
DECL_TEMPLATE(linux, sys_getxattr);
DECL_TEMPLATE(linux, sys_lgetxattr);
DECL_TEMPLATE(linux, sys_fgetxattr);
DECL_TEMPLATE(linux, sys_listxattr);
DECL_TEMPLATE(linux, sys_llistxattr);
DECL_TEMPLATE(linux, sys_flistxattr);
DECL_TEMPLATE(linux, sys_removexattr);
DECL_TEMPLATE(linux, sys_lremovexattr);
DECL_TEMPLATE(linux, sys_fremovexattr);
// These are Posix, but not necessarily syscalls. Darwin only supports
// sched_get_priority_{min,max} and sched_yield, but as libc functions, not
// syscalls.
DECL_TEMPLATE(linux, sys_sched_setparam);
DECL_TEMPLATE(linux, sys_sched_getparam);
DECL_TEMPLATE(linux, sys_sched_setattr);
DECL_TEMPLATE(linux, sys_sched_getattr);
DECL_TEMPLATE(linux, sys_sched_setscheduler);
DECL_TEMPLATE(linux, sys_sched_getscheduler);
DECL_TEMPLATE(linux, sys_sched_yield);
DECL_TEMPLATE(linux, sys_sched_get_priority_max);
DECL_TEMPLATE(linux, sys_sched_get_priority_min);
DECL_TEMPLATE(linux, sys_sched_rr_get_interval);
DECL_TEMPLATE(linux, sys_sched_setaffinity);
DECL_TEMPLATE(linux, sys_sched_getaffinity);
DECL_TEMPLATE(linux, sys_unshare);
DECL_TEMPLATE(linux, sys_setns);
// These ones have different parameters and/or return values on Darwin.
// Also, some archs on Linux do not match the generic wrapper for sys_pipe.
DECL_TEMPLATE(linux, sys_munlockall);
DECL_TEMPLATE(linux, sys_pipe);
DECL_TEMPLATE(linux, sys_pipe2);
DECL_TEMPLATE(linux, sys_quotactl);
DECL_TEMPLATE(linux, sys_waitid);
// Posix, but in Darwin utime is a libc function that calls syscall utimes.
DECL_TEMPLATE(linux, sys_utime);
// On Darwin, off_t is 64-bits even on 32-bit platforms.
DECL_TEMPLATE(linux, sys_lseek);
// Darwin (and probably other OSes) don't have the old_sigset_t type.
DECL_TEMPLATE(linux, sys_sigpending);
DECL_TEMPLATE(linux, sys_sigprocmask);
DECL_TEMPLATE(linux, sys_sigaction);
// I think these are Linux-specific?
DECL_TEMPLATE(linux, sys_rt_sigaction);
DECL_TEMPLATE(linux, sys_rt_sigprocmask);
DECL_TEMPLATE(linux, sys_rt_sigpending);
DECL_TEMPLATE(linux, sys_rt_sigtimedwait);
DECL_TEMPLATE(linux, sys_rt_sigqueueinfo);
DECL_TEMPLATE(linux, sys_rt_tgsigqueueinfo);
DECL_TEMPLATE(linux, sys_rt_sigsuspend);
// Linux-specific?
DECL_TEMPLATE(linux, sys_sync_file_range);
DECL_TEMPLATE(linux, sys_sync_file_range2);
DECL_TEMPLATE(linux, sys_stime); /* maybe generic? I'm not sure */
// Linux specific (kernel modules)
DECL_TEMPLATE(linux, sys_init_module);
DECL_TEMPLATE(linux, sys_finit_module);
DECL_TEMPLATE(linux, sys_delete_module);
// Linux-specific (oprofile-related)
DECL_TEMPLATE(linux, sys_lookup_dcookie); // (*/32/64) L
// Linux-specific (new in Linux 3.2)
DECL_TEMPLATE(linux, sys_process_vm_readv);
DECL_TEMPLATE(linux, sys_process_vm_writev);
// Linux-specific (new in Linux 2.6.36)
DECL_TEMPLATE(linux, sys_fanotify_init);
DECL_TEMPLATE(linux, sys_fanotify_mark);
// Linux-specific (new in Linux 3.17)
DECL_TEMPLATE(linux, sys_getrandom);
DECL_TEMPLATE(linux, sys_memfd_create);
DECL_TEMPLATE(linux, sys_syncfs);
DECL_TEMPLATE(linux, sys_membarrier);
// Linux-specific (new in Linux 3.18)
DECL_TEMPLATE(linux, sys_bpf);
// Linux-specific (new in Linux 3.19)
DECL_TEMPLATE(linux, sys_execveat);
// Linux-specific (new in Linux 4.11)
DECL_TEMPLATE(linux, sys_statx);
// Linux-specific memory protection key syscalls (since Linux 4.9)
DECL_TEMPLATE(linux, sys_pkey_alloc);
DECL_TEMPLATE(linux, sys_pkey_free);
DECL_TEMPLATE(linux, sys_pkey_mprotect);
// Linux io_uring system calls. See also commit 2b188cc1bb85 ("Add io_uring IO
// interface") # v5.1. See also commit edafccee56ff ("io_uring: add support
// for pre-mapped user IO buffers") # v5.1.
DECL_TEMPLATE(linux, sys_io_uring_setup);
DECL_TEMPLATE(linux, sys_io_uring_enter);
DECL_TEMPLATE(linux, sys_io_uring_register);
// Linux-specific (new in Linux 5.3)
DECL_TEMPLATE(linux, sys_pidfd_open);
// Linux-specific (new in Linux 5.9)
DECL_TEMPLATE(linux, sys_close_range);
DECL_TEMPLATE(linux, sys_openat2);
// Linux-specific (new in Linux 5.14)
DECL_TEMPLATE(linux, sys_memfd_secret);
/* ---------------------------------------------------------------------
Wrappers for sockets and ipc-ery. These are split into standalone
procedures because x86-linux hides them inside multiplexors
(sys_socketcall and sys_ipc).
------------------------------------------------------------------ */
#define TId ThreadId
#define UW UWord
#define SR SysRes
extern void ML_(linux_PRE_sys_msgsnd) ( TId, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_msgrcv) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_msgrcv) ( TId, UW, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_msgctl) ( TId, UW, UW, UW );
extern void ML_(linux_POST_sys_msgctl) ( TId, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_getsockopt) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_getsockopt) ( TId, SR, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_setsockopt) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_recvmmsg) ( TId, UW, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_recvmmsg) ( TId, UW, UW, UW, UW, UW, UW );
extern void ML_(linux_PRE_sys_sendmmsg) ( TId, UW, UW, UW, UW );
extern void ML_(linux_POST_sys_sendmmsg) ( TId, UW, UW, UW, UW, UW );
// Linux-specific (but non-arch-specific) ptrace wrapper helpers
extern void ML_(linux_PRE_getregset) ( ThreadId, long, long );
extern void ML_(linux_PRE_setregset) ( ThreadId, long, long );
extern void ML_(linux_POST_traceme) ( ThreadId );
extern void ML_(linux_POST_getregset)( ThreadId, long, long );
#undef TId
#undef UW
#undef SR
/* sys_ipc and sys_socketcall are multiplexors which implements several syscalls.
Used e.g. by x86, ppc32, ppc64, ... */
DECL_TEMPLATE(linux, sys_ipc);
DECL_TEMPLATE(linux, sys_socketcall);
/* Depending on the platform, the below are implemented as
direct syscalls or via the above sys_socketcall multiplexor. */
/* Direct ipc related syscalls. */
/* Semaphore */
DECL_TEMPLATE(linux, sys_semget);
DECL_TEMPLATE(linux, sys_semop);
DECL_TEMPLATE(linux, sys_semctl);
DECL_TEMPLATE(linux, sys_semtimedop);
/* Shared memory */
DECL_TEMPLATE(linux, sys_shmat);
DECL_TEMPLATE(linux, sys_shmget);
DECL_TEMPLATE(linux, sys_shmdt);
DECL_TEMPLATE(linux, sys_shmctl);
/* Message queue */
DECL_TEMPLATE(linux, sys_msgget);
DECL_TEMPLATE(linux, sys_msgrcv);
DECL_TEMPLATE(linux, sys_msgsnd);
DECL_TEMPLATE(linux, sys_msgctl);
/* Direct socket related syscalls. */
DECL_TEMPLATE(linux, sys_socket);
DECL_TEMPLATE(linux, sys_setsockopt);
DECL_TEMPLATE(linux, sys_getsockopt);
DECL_TEMPLATE(linux, sys_connect);
DECL_TEMPLATE(linux, sys_accept);
DECL_TEMPLATE(linux, sys_accept4);
DECL_TEMPLATE(linux, sys_send);
DECL_TEMPLATE(linux, sys_sendto);
DECL_TEMPLATE(linux, sys_recv);
DECL_TEMPLATE(linux, sys_recvfrom);
DECL_TEMPLATE(linux, sys_sendmsg);
DECL_TEMPLATE(linux, sys_recvmsg);
DECL_TEMPLATE(linux, sys_shutdown);
DECL_TEMPLATE(linux, sys_bind);
DECL_TEMPLATE(linux, sys_listen);
DECL_TEMPLATE(linux, sys_getsockname);
DECL_TEMPLATE(linux, sys_getpeername);
DECL_TEMPLATE(linux, sys_socketpair);
DECL_TEMPLATE(linux, sys_kcmp);
DECL_TEMPLATE(linux, sys_copy_file_range);
/* 64bit time_t syscalls for 32bit arches. */
DECL_TEMPLATE(linux, sys_clock_gettime64)
DECL_TEMPLATE(linux, sys_clock_settime64)
// clock_adjtime64
DECL_TEMPLATE(linux, sys_clock_getres_time64)
DECL_TEMPLATE(linux, sys_clock_nanosleep_time64);
DECL_TEMPLATE(linux, sys_timer_gettime64);
DECL_TEMPLATE(linux, sys_timer_settime64);
DECL_TEMPLATE(linux, sys_timerfd_gettime64);
DECL_TEMPLATE(linux, sys_timerfd_settime64);
DECL_TEMPLATE(linux, sys_utimensat_time64);
DECL_TEMPLATE(linux, sys_pselect6_time64);
DECL_TEMPLATE(linux, sys_ppoll_time64);
// io_pgetevents_time64
DECL_TEMPLATE(linux, sys_recvmmsg_time64);
DECL_TEMPLATE(linux, sys_mq_timedsend_time64);
DECL_TEMPLATE(linux, sys_mq_timedreceive_time64);
DECL_TEMPLATE(linux, sys_semtimedop_time64);
DECL_TEMPLATE(linux, sys_rt_sigtimedwait_time64);
DECL_TEMPLATE(linux, sys_futex_time64);
DECL_TEMPLATE(linux, sys_sched_rr_get_interval_time64);
// Some arch specific functions called from syswrap-linux.c
extern Int do_syscall_clone_x86_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern SysRes ML_(x86_sys_set_thread_area) ( ThreadId tid,
vki_modify_ldt_t* info );
extern void ML_(x86_setup_LDT_GDT) ( /*OUT*/ ThreadArchState *child,
/*IN*/ ThreadArchState *parent );
extern Long do_syscall_clone_amd64_linux ( Word (*fn)(void *),
void* stack,
Long flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern ULong do_syscall_clone_ppc32_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr);
extern ULong do_syscall_clone_ppc64_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_s390x_linux ( void *stack,
ULong flags,
Int *parent_tid,
Int *child_tid,
void* tls_ptr,
Word (*fn)(void *),
void *arg);
extern Long do_syscall_clone_arm64_linux ( Word (*fn)(void *),
void* stack,
Long flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_arm_linux ( Word (*fn)(void *),
void* stack,
Int flags,
void* arg,
Int* child_tid,
Int* parent_tid,
void* tls_ptr );
extern ULong do_syscall_clone_mips64_linux ( Word (*fn) (void *), /* a0 - 4 */
void* stack, /* a1 - 5 */
Int flags, /* a2 - 6 */
void* arg, /* a3 - 7 */
Int* parent_tid, /* a4 - 8 */
void* tls_ptr, /* a5 - 9 */
Int* child_tid ); /* a6 - 10 */
extern UInt do_syscall_clone_mips_linux ( Word (*fn) (void *), //a0 0 32
void* stack, //a1 4 36
Int flags, //a2 8 40
void* arg, //a3 12 44
Int* child_tid, //stack 16 48
Int* parent_tid, //stack 20 52
void* tls_ptr); //stack 24 56
extern UInt do_syscall_clone_nanomips_linux ( Word (*fn) (void *), /* a0 - 4 */
void* stack, /* a1 - 5 */
Int flags, /* a2 - 6 */
void* arg, /* a3 - 7 */
Int* child_tid, /* a4 - 8 */
Int* parent_tid, /* a5 - 9 */
void* tls_ptr); /* a6 - 10 */
#endif // __PRIV_SYSWRAP_LINUX_H
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
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