lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

9 files changed, 711 insertions, 0 deletions

diff --git a/lib/mlibc/sysdeps/linux/x86/arch-syscall.cpp b/lib/mlibc/sysdeps/linux/x86/arch-syscall.cpp
new file mode 100644
index 0000000..35fc8aa
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/arch-syscall.cpp
@@ -0,0 +1,90 @@
+#include <bits/syscall.h>
+#include <sys/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+// Note: ebx is used for PIC (it holds a reference to the GOT), so we can't clobber it with gcc apparently,
+// and also need to make sure to restore it after a syscall
+
+sc_word_t __do_syscall0(long sc) {
+	sc_word_t ret;
+	asm volatile("int $0x80" : "=a"(ret) : "a"(sc) : "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc, sc_word_t arg1) {
+	sc_word_t ret;
+	asm volatile("xchg %%ebx, %%edi;"
+		"int $0x80;"
+		"xchg %%edi, %%ebx;"
+		: "=a"(ret)
+		: "a"(sc), "D"(arg1)
+		: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc, sc_word_t arg1, sc_word_t arg2) {
+	sc_word_t ret;
+	asm volatile("xchg %%ebx, %%edi;"
+		"int $0x80;"
+		"xchg %%edi, %%ebx;"
+		: "=a"(ret)
+		: "a"(sc), "D"(arg1), "c"(arg2)
+		: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	sc_word_t ret;
+	asm volatile("xchg %%ebx, %%edi;"
+		"int $0x80;"
+		"xchg %%edi, %%ebx;"
+		: "=a"(ret)
+		: "a"(sc), "D"(arg1), "c"(arg2), "d"(arg3)
+		: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall4(long sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, sc_word_t arg4) {
+	sc_word_t ret;
+	asm volatile("xchg %%ebx, %%edi;"
+		"int $0x80;"
+		"xchg %%edi, %%ebx;"
+		: "=a"(ret)
+		: "a"(sc), "D"(arg1), "c"(arg2), "d"(arg3), "S"(arg4)
+		: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall5(long sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, sc_word_t arg4,
+		sc_word_t arg5) {
+	sc_word_t ret;
+	asm volatile("pushl %2;"
+		"push %%ebx;"
+		"mov 4(%%esp), %%ebx;"
+		"int $0x80;"
+		"pop %%ebx;"
+		"add $4, %%esp;"
+		: "=a"(ret)
+		: "a"(sc), "g"(arg1), "c"(arg2), "d"(arg3), "S"(arg4), "D"(arg5)
+		: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall6(long sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3, sc_word_t arg4,
+		sc_word_t arg5, sc_word_t arg6) {
+	sc_word_t ret;
+	sc_word_t a1a6[2] = { arg1, arg6 };
+	asm volatile ("pushl %1;"
+		"push %%ebx;"
+		"push %%ebp;"
+		"mov 8(%%esp),%%ebx;"
+		"mov 4(%%ebx),%%ebp;"
+		"mov (%%ebx),%%ebx;"
+		"int $0x80;"
+		"pop %%ebp;"
+		"pop %%ebx;"
+		"add $4,%%esp;"
+		: "=a"(ret) : "g"(&a1a6), "a"(sc), "c"(arg2), "d"(arg3), "S"(arg4), "D"(arg5) : "memory");
+	return ret;
+}
diff --git a/lib/mlibc/sysdeps/linux/x86/cp_syscall.S b/lib/mlibc/sysdeps/linux/x86/cp_syscall.S
new file mode 100644
index 0000000..b89e1f4
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/cp_syscall.S
@@ -0,0 +1,42 @@
+
+.section .text
+.global __mlibc_do_asm_cp_syscall
+.global __mlibc_syscall_begin
+.global __mlibc_syscall_end
+.type __mlibc_do_asm_cp_syscall, "function"
+__mlibc_do_asm_cp_syscall:
+	push %ebx
+	push %esi
+	push %edi
+	push %ebp
+	; mov 16(%esp), %eax
+	mov 24(%esp), %ebx
+	mov 28(%esp), %ecx
+	mov 32(%esp), %edx
+	mov 36(%esp), %esi
+	mov 40(%esp), %edi
+	mov 44(%esp), %ebp
+	mov %gs:0x18, %al
+__mlibc_syscall_begin:
+	/* tcbCancelEnableBit && tcbCancelTriggerBit */
+	and $((1 << 0) | (1 << 2)), %al
+	cmp $((1 << 0) | (1 << 2)), %al
+	je cancel
+	mov 20(%esp), %eax
+	int $0x80
+__mlibc_syscall_end:
+	pop %ebp
+	pop %edi
+	pop %esi
+	pop %ebx
+	ret
+
+cancel:
+	pop %ebp
+	pop %edi
+	pop %esi
+	pop %ebx
+	call __mlibc_do_cancel@PLT
+	hlt
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/crt-src/Scrt1.S b/lib/mlibc/sysdeps/linux/x86/crt-src/Scrt1.S
new file mode 100644
index 0000000..a62b127
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/crt-src/Scrt1.S
@@ -0,0 +1,29 @@
+.section .text
+
+.type __stack_chk_fail_local, %function
+.weak __stack_chk_fail_local
+__stack_chk_fail_local:
+	call __stack_chk_fail@plt
+
+.global _start
+
+.type _start, %function
+.type main, %function
+.type __mlibc_entry, %function
+
+.cfi_startproc
+_start:
+.cfi_undefined eip
+	xor %ebp, %ebp
+	mov %esp, %edi
+	call 1f
+
+1:
+	pop %ebx
+	addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
+	push main@GOT(%ebx)
+	push %edi
+	call __mlibc_entry@plt
+.cfi_endproc
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/crt-src/crt1.S b/lib/mlibc/sysdeps/linux/x86/crt-src/crt1.S
new file mode 100644
index 0000000..ed45da3
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/crt-src/crt1.S
@@ -0,0 +1,18 @@
+.section .text
+.global _start
+
+.type _start, %function
+.type main, %function
+.type __mlibc_entry, %function
+
+.cfi_startproc
+_start:
+.cfi_undefined eip
+	xor %ebp, %ebp
+	mov %esp, %ecx
+	push $main
+	push %ecx
+	call __mlibc_entry
+.cfi_endproc
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/crt-src/crti.S b/lib/mlibc/sysdeps/linux/x86/crt-src/crti.S
new file mode 100644
index 0000000..e232557
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/crt-src/crti.S
@@ -0,0 +1,11 @@
+.section .init
+.global _init
+_init:
+	pushl %eax
+
+.section .fini
+.global _fini
+_fini:
+	pushl %eax
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/crt-src/crtn.S b/lib/mlibc/sysdeps/linux/x86/crt-src/crtn.S
new file mode 100644
index 0000000..d890289
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/crt-src/crtn.S
@@ -0,0 +1,9 @@
+.section .init
+	popl %eax
+	ret
+
+.section .fini
+	popl %eax
+	ret
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/signals.S b/lib/mlibc/sysdeps/linux/x86/signals.S
new file mode 100644
index 0000000..8127ee4
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/signals.S
@@ -0,0 +1,18 @@
+.section .text
+
+.global __mlibc_signal_restore
+.type __mlibc_signal_restore, @function
+__mlibc_signal_restore:
+	popl %eax
+	mov $119, %eax
+	int $0x80
+	ud2
+
+.global __mlibc_signal_restore_rt
+.type __mlibc_signal_restore_rt, @function
+__mlibc_signal_restore_rt:
+	mov $173, %eax
+	int $0x80
+	ud2
+
+.section .note.GNU-stack,"",%progbits
diff --git a/lib/mlibc/sysdeps/linux/x86/syscallnos.h b/lib/mlibc/sysdeps/linux/x86/syscallnos.h
new file mode 100644
index 0000000..f75eb0a
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/syscallnos.h
@@ -0,0 +1,433 @@
+#ifndef __MLIBC_SYSCALLNOS_h
+#define __MLIBC_SYSCALLNOS_h
+/* This file is autogenerated. Don't bother. */
+/* Generator script: sysdeps/linux/update-syscall-list.py. */
+#define __NR_restart_syscall 0
+#define __NR_exit 1
+#define __NR_fork 2
+#define __NR_read 3
+#define __NR_write 4
+#define __NR_open 5
+#define __NR_close 6
+#define __NR_waitpid 7
+#define __NR_creat 8
+#define __NR_link 9
+#define __NR_unlink 10
+#define __NR_execve 11
+#define __NR_chdir 12
+#define __NR_time 13
+#define __NR_mknod 14
+#define __NR_chmod 15
+#define __NR_lchown 16
+#define __NR_oldstat 18
+#define __NR_lseek 19
+#define __NR_getpid 20
+#define __NR_mount 21
+#define __NR_umount 22
+#define __NR_setuid 23
+#define __NR_getuid 24
+#define __NR_stime 25
+#define __NR_ptrace 26
+#define __NR_alarm 27
+#define __NR_oldfstat 28
+#define __NR_pause 29
+#define __NR_utime 30
+#define __NR_access 33
+#define __NR_nice 34
+#define __NR_sync 36
+#define __NR_kill 37
+#define __NR_rename 38
+#define __NR_mkdir 39
+#define __NR_rmdir 40
+#define __NR_dup 41
+#define __NR_pipe 42
+#define __NR_times 43
+#define __NR_brk 45
+#define __NR_setgid 46
+#define __NR_getgid 47
+#define __NR_signal 48
+#define __NR_geteuid 49
+#define __NR_getegid 50
+#define __NR_acct 51
+#define __NR_umount2 52
+#define __NR_ioctl 54
+#define __NR_fcntl 55
+#define __NR_setpgid 57
+#define __NR_oldolduname 59
+#define __NR_umask 60
+#define __NR_chroot 61
+#define __NR_ustat 62
+#define __NR_dup2 63
+#define __NR_getppid 64
+#define __NR_getpgrp 65
+#define __NR_setsid 66
+#define __NR_sigaction 67
+#define __NR_sgetmask 68
+#define __NR_ssetmask 69
+#define __NR_setreuid 70
+#define __NR_setregid 71
+#define __NR_sigsuspend 72
+#define __NR_sigpending 73
+#define __NR_sethostname 74
+#define __NR_setrlimit 75
+#define __NR_getrlimit 76
+#define __NR_getrusage 77
+#define __NR_gettimeofday 78
+#define __NR_settimeofday 79
+#define __NR_getgroups 80
+#define __NR_setgroups 81
+#define __NR_select 82
+#define __NR_symlink 83
+#define __NR_oldlstat 84
+#define __NR_readlink 85
+#define __NR_uselib 86
+#define __NR_swapon 87
+#define __NR_reboot 88
+#define __NR_readdir 89
+#define __NR_mmap 90
+#define __NR_munmap 91
+#define __NR_truncate 92
+#define __NR_ftruncate 93
+#define __NR_fchmod 94
+#define __NR_fchown 95
+#define __NR_getpriority 96
+#define __NR_setpriority 97
+#define __NR_statfs 99
+#define __NR_fstatfs 100
+#define __NR_ioperm 101
+#define __NR_socketcall 102
+#define __NR_syslog 103
+#define __NR_setitimer 104
+#define __NR_getitimer 105
+#define __NR_stat 106
+#define __NR_lstat 107
+#define __NR_fstat 108
+#define __NR_olduname 109
+#define __NR_iopl 110
+#define __NR_vhangup 111
+#define __NR_idle 112
+#define __NR_vm86old 113
+#define __NR_wait4 114
+#define __NR_swapoff 115
+#define __NR_sysinfo 116
+#define __NR_ipc 117
+#define __NR_fsync 118
+#define __NR_sigreturn 119
+#define __NR_clone 120
+#define __NR_setdomainname 121
+#define __NR_uname 122
+#define __NR_modify_ldt 123
+#define __NR_adjtimex 124
+#define __NR_mprotect 125
+#define __NR_sigprocmask 126
+#define __NR_create_module 127
+#define __NR_init_module 128
+#define __NR_delete_module 129
+#define __NR_get_kernel_syms 130
+#define __NR_quotactl 131
+#define __NR_getpgid 132
+#define __NR_fchdir 133
+#define __NR_bdflush 134
+#define __NR_sysfs 135
+#define __NR_personality 136
+#define __NR_setfsuid 138
+#define __NR_setfsgid 139
+#define __NR__llseek 140
+#define __NR_getdents 141
+#define __NR__newselect 142
+#define __NR_flock 143
+#define __NR_msync 144
+#define __NR_readv 145
+#define __NR_writev 146
+#define __NR_getsid 147
+#define __NR_fdatasync 148
+#define __NR__sysctl 149
+#define __NR_mlock 150
+#define __NR_munlock 151
+#define __NR_mlockall 152
+#define __NR_munlockall 153
+#define __NR_sched_setparam 154
+#define __NR_sched_getparam 155
+#define __NR_sched_setscheduler 156
+#define __NR_sched_getscheduler 157
+#define __NR_sched_yield 158
+#define __NR_sched_get_priority_max 159
+#define __NR_sched_get_priority_min 160
+#define __NR_sched_rr_get_interval 161
+#define __NR_nanosleep 162
+#define __NR_mremap 163
+#define __NR_setresuid 164
+#define __NR_getresuid 165
+#define __NR_vm86 166
+#define __NR_query_module 167
+#define __NR_poll 168
+#define __NR_nfsservctl 169
+#define __NR_setresgid 170
+#define __NR_getresgid 171
+#define __NR_prctl 172
+#define __NR_rt_sigreturn 173
+#define __NR_rt_sigaction 174
+#define __NR_rt_sigprocmask 175
+#define __NR_rt_sigpending 176
+#define __NR_rt_sigtimedwait 177
+#define __NR_rt_sigqueueinfo 178
+#define __NR_rt_sigsuspend 179
+#define __NR_pread64 180
+#define __NR_pwrite64 181
+#define __NR_chown 182
+#define __NR_getcwd 183
+#define __NR_capget 184
+#define __NR_capset 185
+#define __NR_sigaltstack 186
+#define __NR_sendfile 187
+#define __NR_getpmsg 188
+#define __NR_vfork 190
+#define __NR_ugetrlimit 191
+#define __NR_mmap2 192
+#define __NR_truncate64 193
+#define __NR_ftruncate64 194
+#define __NR_stat64 195
+#define __NR_lstat64 196
+#define __NR_fstat64 197
+#define __NR_lchown32 198
+#define __NR_getuid32 199
+#define __NR_getgid32 200
+#define __NR_geteuid32 201
+#define __NR_getegid32 202
+#define __NR_setreuid32 203
+#define __NR_setregid32 204
+#define __NR_getgroups32 205
+#define __NR_setgroups32 206
+#define __NR_fchown32 207
+#define __NR_setresuid32 208
+#define __NR_getresuid32 209
+#define __NR_setresgid32 210
+#define __NR_getresgid32 211
+#define __NR_chown32 212
+#define __NR_setuid32 213
+#define __NR_setgid32 214
+#define __NR_setfsuid32 215
+#define __NR_setfsgid32 216
+#define __NR_pivot_root 217
+#define __NR_mincore 218
+#define __NR_madvise 219
+#define __NR_getdents64 220
+#define __NR_fcntl64 221
+#define __NR_gettid 224
+#define __NR_readahead 225
+#define __NR_setxattr 226
+#define __NR_lsetxattr 227
+#define __NR_fsetxattr 228
+#define __NR_getxattr 229
+#define __NR_lgetxattr 230
+#define __NR_fgetxattr 231
+#define __NR_listxattr 232
+#define __NR_llistxattr 233
+#define __NR_flistxattr 234
+#define __NR_removexattr 235
+#define __NR_lremovexattr 236
+#define __NR_fremovexattr 237
+#define __NR_tkill 238
+#define __NR_sendfile64 239
+#define __NR_futex 240
+#define __NR_sched_setaffinity 241
+#define __NR_sched_getaffinity 242
+#define __NR_set_thread_area 243
+#define __NR_get_thread_area 244
+#define __NR_io_setup 245
+#define __NR_io_destroy 246
+#define __NR_io_getevents 247
+#define __NR_io_submit 248
+#define __NR_io_cancel 249
+#define __NR_fadvise64 250
+#define __NR_exit_group 252
+#define __NR_lookup_dcookie 253
+#define __NR_epoll_create 254
+#define __NR_epoll_ctl 255
+#define __NR_epoll_wait 256
+#define __NR_remap_file_pages 257
+#define __NR_set_tid_address 258
+#define __NR_timer_create 259
+#define __NR_timer_settime 260
+#define __NR_timer_gettime 261
+#define __NR_timer_getoverrun 262
+#define __NR_timer_delete 263
+#define __NR_clock_settime 264
+#define __NR_clock_gettime 265
+#define __NR_clock_getres 266
+#define __NR_clock_nanosleep 267
+#define __NR_statfs64 268
+#define __NR_fstatfs64 269
+#define __NR_tgkill 270
+#define __NR_utimes 271
+#define __NR_fadvise64_64 272
+#define __NR_mbind 274
+#define __NR_get_mempolicy 275
+#define __NR_set_mempolicy 276
+#define __NR_mq_open 277
+#define __NR_mq_unlink 278
+#define __NR_mq_timedsend 279
+#define __NR_mq_timedreceive 280
+#define __NR_mq_notify 281
+#define __NR_mq_getsetattr 282
+#define __NR_kexec_load 283
+#define __NR_waitid 284
+#define __NR_add_key 286
+#define __NR_request_key 287
+#define __NR_keyctl 288
+#define __NR_ioprio_set 289
+#define __NR_ioprio_get 290
+#define __NR_inotify_init 291
+#define __NR_inotify_add_watch 292
+#define __NR_inotify_rm_watch 293
+#define __NR_migrate_pages 294
+#define __NR_openat 295
+#define __NR_mkdirat 296
+#define __NR_mknodat 297
+#define __NR_fchownat 298
+#define __NR_futimesat 299
+#define __NR_fstatat64 300
+#define __NR_unlinkat 301
+#define __NR_renameat 302
+#define __NR_linkat 303
+#define __NR_symlinkat 304
+#define __NR_readlinkat 305
+#define __NR_fchmodat 306
+#define __NR_faccessat 307
+#define __NR_pselect6 308
+#define __NR_ppoll 309
+#define __NR_unshare 310
+#define __NR_set_robust_list 311
+#define __NR_get_robust_list 312
+#define __NR_splice 313
+#define __NR_sync_file_range 314
+#define __NR_tee 315
+#define __NR_vmsplice 316
+#define __NR_move_pages 317
+#define __NR_getcpu 318
+#define __NR_epoll_pwait 319
+#define __NR_utimensat 320
+#define __NR_signalfd 321
+#define __NR_timerfd_create 322
+#define __NR_eventfd 323
+#define __NR_fallocate 324
+#define __NR_timerfd_settime 325
+#define __NR_timerfd_gettime 326
+#define __NR_signalfd4 327
+#define __NR_eventfd2 328
+#define __NR_epoll_create1 329
+#define __NR_dup3 330
+#define __NR_pipe2 331
+#define __NR_inotify_init1 332
+#define __NR_preadv 333
+#define __NR_pwritev 334
+#define __NR_rt_tgsigqueueinfo 335
+#define __NR_perf_event_open 336
+#define __NR_recvmmsg 337
+#define __NR_fanotify_init 338
+#define __NR_fanotify_mark 339
+#define __NR_prlimit64 340
+#define __NR_name_to_handle_at 341
+#define __NR_open_by_handle_at 342
+#define __NR_clock_adjtime 343
+#define __NR_syncfs 344
+#define __NR_sendmmsg 345
+#define __NR_setns 346
+#define __NR_process_vm_readv 347
+#define __NR_process_vm_writev 348
+#define __NR_kcmp 349
+#define __NR_finit_module 350
+#define __NR_sched_setattr 351
+#define __NR_sched_getattr 352
+#define __NR_renameat2 353
+#define __NR_seccomp 354
+#define __NR_getrandom 355
+#define __NR_memfd_create 356
+#define __NR_bpf 357
+#define __NR_execveat 358
+#define __NR_socket 359
+#define __NR_socketpair 360
+#define __NR_bind 361
+#define __NR_connect 362
+#define __NR_listen 363
+#define __NR_accept4 364
+#define __NR_getsockopt 365
+#define __NR_setsockopt 366
+#define __NR_getsockname 367
+#define __NR_getpeername 368
+#define __NR_sendto 369
+#define __NR_sendmsg 370
+#define __NR_recvfrom 371
+#define __NR_recvmsg 372
+#define __NR_shutdown 373
+#define __NR_userfaultfd 374
+#define __NR_membarrier 375
+#define __NR_mlock2 376
+#define __NR_copy_file_range 377
+#define __NR_preadv2 378
+#define __NR_pwritev2 379
+#define __NR_pkey_mprotect 380
+#define __NR_pkey_alloc 381
+#define __NR_pkey_free 382
+#define __NR_statx 383
+#define __NR_arch_prctl 384
+#define __NR_io_pgetevents 385
+#define __NR_rseq 386
+#define __NR_semget 393
+#define __NR_semctl 394
+#define __NR_shmget 395
+#define __NR_shmctl 396
+#define __NR_shmat 397
+#define __NR_shmdt 398
+#define __NR_msgget 399
+#define __NR_msgsnd 400
+#define __NR_msgrcv 401
+#define __NR_msgctl 402
+#define __NR_clock_gettime64 403
+#define __NR_clock_settime64 404
+#define __NR_clock_adjtime64 405
+#define __NR_clock_getres_time64 406
+#define __NR_clock_nanosleep_time64 407
+#define __NR_timer_gettime64 408
+#define __NR_timer_settime64 409
+#define __NR_timerfd_gettime64 410
+#define __NR_timerfd_settime64 411
+#define __NR_utimensat_time64 412
+#define __NR_pselect6_time64 413
+#define __NR_ppoll_time64 414
+#define __NR_io_pgetevents_time64 416
+#define __NR_recvmmsg_time64 417
+#define __NR_mq_timedsend_time64 418
+#define __NR_mq_timedreceive_time64 419
+#define __NR_semtimedop_time64 420
+#define __NR_rt_sigtimedwait_time64 421
+#define __NR_futex_time64 422
+#define __NR_sched_rr_get_interval_time64 423
+#define __NR_pidfd_send_signal 424
+#define __NR_io_uring_setup 425
+#define __NR_io_uring_enter 426
+#define __NR_io_uring_register 427
+#define __NR_open_tree 428
+#define __NR_move_mount 429
+#define __NR_fsopen 430
+#define __NR_fsconfig 431
+#define __NR_fsmount 432
+#define __NR_fspick 433
+#define __NR_pidfd_open 434
+#define __NR_clone3 435
+#define __NR_close_range 436
+#define __NR_openat2 437
+#define __NR_pidfd_getfd 438
+#define __NR_faccessat2 439
+#define __NR_process_madvise 440
+#define __NR_epoll_pwait2 441
+#define __NR_mount_setattr 442
+#define __NR_quotactl_fd 443
+#define __NR_landlock_create_ruleset 444
+#define __NR_landlock_add_rule 445
+#define __NR_landlock_restrict_self 446
+#define __NR_memfd_secret 447
+#define __NR_process_mrelease 448
+#define __NR_futex_waitv 449
+#define __NR_set_mempolicy_home_node 450
+#endif /* __MLIBC_SYSCALLNOS_h */
diff --git a/lib/mlibc/sysdeps/linux/x86/thread_entry.S b/lib/mlibc/sysdeps/linux/x86/thread_entry.S
new file mode 100644
index 0000000..031a6aa
--- /dev/null
+++ b/lib/mlibc/sysdeps/linux/x86/thread_entry.S
@@ -0,0 +1,61 @@
+#define FLAGS 4
+#define STACK FLAGS+4
+#define PTID STACK+4
+#define CTID PTID+4
+#define TLS CTID+4
+
+.section .text
+.global __mlibc_spawn_thread
+.type __mlibc_spawn_thread, "function"
+.cfi_startproc
+__mlibc_spawn_thread:
+	push %ebx
+	.cfi_adjust_cfa_offset 4
+	.cfi_rel_offset ebx, 0
+	push %esi
+	.cfi_adjust_cfa_offset 4
+	.cfi_rel_offset esi, 0
+	push %edi
+	.cfi_adjust_cfa_offset 4
+	.cfi_rel_offset edi, 0
+
+	xor %eax, %eax
+	mov 12+FLAGS(%esp), %ebx
+	mov 12+STACK(%esp), %ecx
+	mov 12+PTID(%esp), %edx
+	/* On x86-32 tls and child_tid have to be reversed */
+	mov 12+TLS(%esp), %esi
+	mov 12+CTID(%esp), %edi
+	mov $120, %al
+
+	int $0x80
+
+	test %eax, %eax
+	jnz .parent_exit
+
+	xor %ebp, %ebp
+	.cfi_undefined %eip
+	.cfi_undefined %ebp
+
+	call 1f
+1:
+	pop %ebx
+	addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %ebx
+
+	call __mlibc_enter_thread@plt
+	hlt
+
+.parent_exit:
+	pop %edi
+	.cfi_adjust_cfa_offset -4
+	.cfi_restore edi
+	pop %esi
+	.cfi_adjust_cfa_offset -4
+	.cfi_restore esi
+	pop %ebx
+	.cfi_adjust_cfa_offset -4
+	.cfi_restore ebx
+	ret
+.cfi_endproc
+
+.section .note.GNU-stack,"",%progbits