user: implement mlibc as the libc, finally.

It's finally done.. Signed-off-by: kaguya <vpshinomiya@protonmail.com>
2026-05-02 03:31:49 -04:00
parent 2fa39ad85a
commit 9a9b91c940
2387 changed files with 152741 additions and 315 deletions
@@ -0,0 +1,117 @@
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+sc_word_t __do_syscall0(long sc) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) : "r"(sc_reg) : "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc,
+		sc_word_t arg1) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc,
+		sc_word_t arg1, sc_word_t arg2) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t arg2_reg asm("x1") = arg2;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t arg2_reg asm("x1") = arg2;
+	register sc_word_t arg3_reg asm("x2") = arg3;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg)
+			: "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) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t arg2_reg asm("x1") = arg2;
+	register sc_word_t arg3_reg asm("x2") = arg3;
+	register sc_word_t arg4_reg asm("x3") = arg4;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg)
+			: "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) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t arg2_reg asm("x1") = arg2;
+	register sc_word_t arg3_reg asm("x2") = arg3;
+	register sc_word_t arg4_reg asm("x3") = arg4;
+	register sc_word_t arg5_reg asm("x4") = arg5;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg)
+			: "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) {
+	register int sc_reg asm("x8") = sc;
+	register sc_word_t arg1_reg asm("x0") = arg1;
+	register sc_word_t arg2_reg asm("x1") = arg2;
+	register sc_word_t arg3_reg asm("x2") = arg3;
+	register sc_word_t arg4_reg asm("x3") = arg4;
+	register sc_word_t arg5_reg asm("x4") = arg5;
+	register sc_word_t arg6_reg asm("x5") = arg6;
+	register sc_word_t ret asm("x0");
+	asm volatile ("svc 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg),
+			"r"(arg6_reg)
+			: "memory"
+			);
+	return ret;
+}
@@ -0,0 +1,31 @@
+.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:
+	mov x8, x0
+	mov x0, x1
+	mov x1, x2
+	mov x2, x3
+	mov x3, x4
+	mov x4, x5
+	mov x5, x6
+
+	mrs x7, tpidr_el0
+	ldr w7, [x7, #-80] // Tcb::cancelBits. See asserts in tcb.hpp.
+__mlibc_syscall_begin:
+	// tcbCancelEnableBit && tcbCancelTriggerBit
+	mov x9, #((1 << 0) | (1 << 2))
+	and x7, x7, x9
+	cmp x7, x9
+	b.eq cancel
+	svc 0
+__mlibc_syscall_end:
+	ret
+
+cancel:
+	bl __mlibc_do_cancel
+	brk #0
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,11 @@
+.section .text
+.global _start
+_start:
+	mov x0, sp
+	adr x1, main
+
+	bl __mlibc_entry
+	brk #0
+
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,9 @@
+.section .text
+.global _start
+_start:
+	mov x0, sp
+	adrp x1, main
+	add x1, x1, :lo12:main
+	bl __mlibc_entry
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,13 @@
+.section .init
+.global _init
+_init:
+	stp x29, x30, [sp, -16]!
+	mov x29, sp
+
+.section .fini
+.global _fini
+_fini:
+	stp x29, x30, [sp, -16]!
+	mov x29, sp
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,9 @@
+.section .init
+	ldp x29, x30, [sp], #16
+	ret
+
+.section .fini
+	ldp x29, x30, [sp], #16
+	ret
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,12 @@
+.section .text
+
+.global __mlibc_signal_restore
+.type __mlibc_signal_restore, @function
+__mlibc_signal_restore:
+.global __mlibc_signal_restore_rt
+.type __mlibc_signal_restore_rt, @function
+__mlibc_signal_restore_rt:
+	mov x8,#139 // SYS_rt_sigreturn
+	svc 0
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,327 @@
+#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_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_renameat 38
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR_statfs 43
+#define __NR_fstatfs 44
+#define __NR_truncate 45
+#define __NR_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_newfstatat 79
+#define __NR_fstat 80
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrlimit 163
+#define __NR_setrlimit 164
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR_mmap 222
+#define __NR_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#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
+#define __NR_cachestat 451
+#define __NR_fchmodat2 452
+#define __NR_map_shadow_stack 453
+#define __NR_futex_wake 454
+#define __NR_futex_wait 455
+#define __NR_futex_requeue 456
+#define __NR_statmount 457
+#define __NR_listmount 458
+#define __NR_lsm_get_self_attr 459
+#define __NR_lsm_set_self_attr 460
+#define __NR_lsm_list_modules 461
+#define __NR_mseal 462
+#define __NR_setxattrat 463
+#define __NR_getxattrat 464
+#define __NR_listxattrat 465
+#define __NR_removexattrat 466
+#endif /* __MLIBC_SYSCALLNOS_h */
@@ -0,0 +1,27 @@
+.section .text
+.global __mlibc_spawn_thread
+.type __mlibc_spawn_thread, "function"
+__mlibc_spawn_thread:
+	// __mlibc_spawn_thread(flags, stack, pid_out, child_tid, tls)
+	//                         x0,     x1,     x2,        x3,  x4
+	//           syscall(NR_clone, flags, stack, ptid, tls, ctid)
+	//                         x8,    x0,    x1,   x2,  x3,   x4
+
+	// Swap x3 <-> x4
+	mov x5, x4
+	mov x4, x3
+	mov x3, x5
+
+	mov x8, 220 // NR_clone
+	svc 0
+	cbnz x0, .parent
+
+	ldp x0, x1, [sp], #16
+
+	bl __mlibc_enter_thread
+	brk #0
+
+.parent:
+	ret
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,118 @@
+#pragma once
+
+#include <errno.h>
+#include <mlibc/tcb.hpp>
+#include <mlibc/thread.hpp>
+#include <mlibc-config.h>
+#include <utility>
+
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+extern "C" {
+	extern sc_word_t __mlibc_do_asm_cp_syscall(int 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);
+
+	extern void __mlibc_do_cancel();
+}
+
+namespace mlibc {
+	// C++ wrappers for the extern "C" functions.
+	inline sc_word_t do_nargs_syscall(int sc) {
+		return __do_syscall0(sc);
+	}
+	inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1) {
+		return __do_syscall1(sc, arg1);
+	}
+	inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2) {
+		return __do_syscall2(sc, arg1, arg2);
+	}
+	inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+		return __do_syscall3(sc, arg1, arg2, arg3);
+	}
+	inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+			sc_word_t arg4) {
+		return __do_syscall4(sc, arg1, arg2, arg3, arg4);
+	}
+	inline sc_word_t do_nargs_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+			sc_word_t arg4, sc_word_t arg5) {
+		return __do_syscall5(sc, arg1, arg2, arg3, arg4, arg5);
+	}
+	inline sc_word_t do_nargs_syscall(int 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) {
+		return __do_syscall6(sc, arg1, arg2, arg3, arg4, arg5, arg6);
+	}
+
+	inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, 0, 0, 0, 0, 0);
+	}
+	inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, 0, 0, 0, 0);
+	}
+	inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2,
+			sc_word_t arg3) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, 0, 0, 0);
+	}
+	inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+			sc_word_t arg4) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, 0, 0);
+	}
+	inline sc_word_t do_nargs_cp_syscall(int sc, sc_word_t arg1, sc_word_t arg2, sc_word_t arg3,
+			sc_word_t arg4, sc_word_t arg5) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, arg5, 0);
+	}
+	inline sc_word_t do_nargs_cp_syscall(int 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) {
+		return __mlibc_do_asm_cp_syscall(sc, arg1, arg2, arg3, arg4, arg5, arg6);
+	}
+
+	// Type-safe syscall result type.
+	enum class sc_result_t : sc_word_t { };
+
+	// Cast to the argument type of the extern "C" functions.
+	inline sc_word_t sc_cast(long x) { return x; }
+	inline sc_word_t sc_cast(const void *x) { return reinterpret_cast<sc_word_t>(x); }
+
+	template<typename... T>
+	sc_result_t do_syscall(int sc, T... args) {
+		return static_cast<sc_result_t>(do_nargs_syscall(sc, sc_cast(args)...));
+	}
+
+	inline int sc_error(sc_result_t ret) {
+		auto v = static_cast<sc_word_t>(ret);
+		if(static_cast<unsigned long>(v) > -4096UL)
+			return -v;
+		return 0;
+	}
+
+	template<typename... T>
+	sc_result_t do_cp_syscall(int sc, T... args) {
+#if __MLIBC_POSIX_OPTION && !MLIBC_BUILDING_RTLD
+		auto result = static_cast<sc_result_t>(do_nargs_cp_syscall(sc, sc_cast(args)...));
+		if (int e = sc_error(result); e) {
+			auto tcb = reinterpret_cast<Tcb*>(get_current_tcb());
+			if (tcb_cancelled(tcb->cancelBits) && e == EINTR) {
+				__mlibc_do_cancel();
+				__builtin_unreachable();
+			}
+		}
+		return result;
+#else
+		return do_syscall(sc, std::forward<T>(args)...);
+#endif // __MLIBC_POSIX_OPTION || !MLIBC_BUILDING_RTLD
+	}
+	// Cast from the syscall result type.
+	template<typename T>
+	T sc_int_result(sc_result_t ret) {
+		auto v = static_cast<sc_word_t>(ret);
+		return v;
+	}
+
+	template<typename T>
+	T *sc_ptr_result(sc_result_t ret) {
+		auto v = static_cast<sc_word_t>(ret);
+		return reinterpret_cast<T *>(v);
+	}
+}
@@ -0,0 +1,18 @@
+#include <stdint.h>
+#include <stdlib.h>
+#include <bits/ensure.h>
+#include <mlibc/elf/startup.h>
+#include <sys/auxv.h>
+
+extern "C" void __dlapi_enter(uintptr_t *);
+
+extern char **environ;
+
+size_t __hwcap;
+
+extern "C" void __mlibc_entry(uintptr_t *entry_stack, int (*main_fn)(int argc, char *argv[], char *env[])) {
+	__dlapi_enter(entry_stack);
+	__hwcap = getauxval(AT_HWCAP);
+	auto result = main_fn(mlibc::entry_stack.argc, mlibc::entry_stack.argv, environ);
+	exit(result);
+}
@@ -0,0 +1,60 @@
+#include <mlibc/thread-entry.hpp>
+#include <mlibc/all-sysdeps.hpp>
+#include <mlibc/thread.hpp>
+#include <bits/ensure.h>
+#include <sys/mman.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <errno.h>
+
+extern "C" void __mlibc_enter_thread(void *entry, void *user_arg) {
+	// The linux kernel already sets the TCB in sys_clone().
+	auto tcb = mlibc::get_current_tcb();
+
+	// Wait until our parent sets up the TID.
+	while(!__atomic_load_n(&tcb->tid, __ATOMIC_RELAXED))
+		mlibc::sys_futex_wait(&tcb->tid, 0, nullptr);
+
+	tcb->invokeThreadFunc(entry, user_arg);
+
+	__atomic_store_n(&tcb->didExit, 1, __ATOMIC_RELEASE);
+	mlibc::sys_futex_wake(&tcb->didExit);
+
+	mlibc::sys_thread_exit();
+}
+
+namespace mlibc {
+
+static constexpr size_t default_stacksize = 0x200000;
+
+int sys_prepare_stack(void **stack, void *entry, void *user_arg, void *tcb, size_t *stack_size, size_t *guard_size, void **stack_base) {
+	(void)tcb;
+	if (!*stack_size)
+		*stack_size = default_stacksize;
+
+	uintptr_t map;
+	if (*stack) {
+		map = reinterpret_cast<uintptr_t>(*stack);
+		*guard_size = 0;
+	} else {
+		map = reinterpret_cast<uintptr_t>(
+				mmap(nullptr, *stack_size + *guard_size,
+					PROT_NONE,
+					MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)
+				);
+		if (reinterpret_cast<void*>(map) == MAP_FAILED)
+			return EAGAIN;
+		int ret = mprotect(reinterpret_cast<void*>(map + *guard_size), *stack_size,
+				PROT_READ | PROT_WRITE);
+		if(ret)
+			return EAGAIN;
+	}
+
+	*stack_base = reinterpret_cast<void*>(map);
+	auto sp = reinterpret_cast<uintptr_t*>(map + *guard_size + *stack_size);
+	*--sp = reinterpret_cast<uintptr_t>(user_arg);
+	*--sp = reinterpret_cast<uintptr_t>(entry);
+	*stack = reinterpret_cast<void*>(sp);
+	return 0;
+}
+} // namespace mlibc
@@ -0,0 +1,2 @@
+/* stub header not present in practice, redirects to our internal syscallnos */
+#include <syscallnos.h>
@@ -0,0 +1 @@
+../../../../abis/linux/access.h
@@ -0,0 +1 @@
+../../../../abis/linux/auxv.h
@@ -0,0 +1 @@
+../../../../abis/linux/blkcnt_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/blksize_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/clockid_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/dev_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/epoll.h
@@ -0,0 +1 @@
+../../../../abis/linux/errno.h
@@ -0,0 +1 @@
+../../../../abis/linux/fcntl.h
@@ -0,0 +1 @@
+../../../../abis/linux/fsblkcnt_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/fsfilcnt_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/gid_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/in.h
@@ -0,0 +1 @@
+../../../../abis/linux/ino_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/inotify.h
@@ -0,0 +1 @@
+../../../../abis/linux/ioctls.h
@@ -0,0 +1 @@
+../../../../abis/linux/ipc.h
@@ -0,0 +1 @@
+../../../../abis/linux/limits.h
@@ -0,0 +1 @@
+../../../../abis/linux/mode_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/mqueue.h
@@ -0,0 +1 @@
+../../../../abis/linux/msg.h
@@ -0,0 +1 @@
+../../../../abis/linux/nlink_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/packet.h
@@ -0,0 +1 @@
+../../../../abis/linux/pid_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/poll.h
@@ -0,0 +1 @@
+../../../../abis/linux/ptrace.h
@@ -0,0 +1 @@
+../../../../abis/linux/random.h
@@ -0,0 +1 @@
+../../../../abis/linux/reboot.h
@@ -0,0 +1 @@
+../../../../abis/linux/resource.h
@@ -0,0 +1 @@
+../../../../abis/linux/riscv-hwprobe.h
@@ -0,0 +1 @@
+../../../../abis/linux/rlim_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/seek-whence.h
@@ -0,0 +1 @@
+../../../../abis/linux/shm.h
@@ -0,0 +1 @@
+../../../../abis/linux/sigevent.h
@@ -0,0 +1 @@
+../../../../abis/linux/signal.h
@@ -0,0 +1 @@
+../../../../abis/linux/sigval.h
@@ -0,0 +1 @@
+../../../../abis/linux/socket.h
@@ -0,0 +1 @@
+../../../../abis/linux/socklen_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/stat.h
@@ -0,0 +1 @@
+../../../../abis/linux/statfs.h
@@ -0,0 +1 @@
+../../../../abis/linux/statvfs.h
@@ -0,0 +1 @@
+../../../../abis/linux/statx.h
@@ -0,0 +1 @@
+../../../../abis/linux/suseconds_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/termios.h
@@ -0,0 +1 @@
+../../../../abis/linux/time.h
@@ -0,0 +1 @@
+../../../../abis/linux/uid_t.h
@@ -0,0 +1 @@
+../../../../abis/linux/utmp-defines.h
@@ -0,0 +1 @@
+../../../../abis/linux/utmpx.h
@@ -0,0 +1 @@
+../../../../abis/linux/utsname.h
@@ -0,0 +1 @@
+../../../../abis/linux/vm-flags.h
@@ -0,0 +1 @@
+../../../../abis/linux/vt.h
@@ -0,0 +1 @@
+../../../../abis/linux/wait.h
@@ -0,0 +1 @@
+../../../../abis/linux/xattr.h
@@ -0,0 +1,100 @@
+#ifndef _MLIBC_SYSCALL_H
+#define _MLIBC_SYSCALL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef long __sc_word_t;
+
+/* These functions are implemented in arch-syscall.cpp. */
+__sc_word_t __do_syscall0(long);
+__sc_word_t __do_syscall1(long, __sc_word_t);
+__sc_word_t __do_syscall2(long, __sc_word_t, __sc_word_t);
+__sc_word_t __do_syscall3(long, __sc_word_t, __sc_word_t, __sc_word_t);
+__sc_word_t __do_syscall4(long, __sc_word_t, __sc_word_t, __sc_word_t, __sc_word_t);
+__sc_word_t __do_syscall5(long, __sc_word_t, __sc_word_t, __sc_word_t, __sc_word_t,
+		__sc_word_t);
+__sc_word_t __do_syscall6(long, __sc_word_t, __sc_word_t, __sc_word_t, __sc_word_t,
+		__sc_word_t, __sc_word_t);
+__sc_word_t __do_syscall7(long, __sc_word_t, __sc_word_t, __sc_word_t, __sc_word_t,
+		__sc_word_t, __sc_word_t, __sc_word_t);
+long __do_syscall_ret(unsigned long);
+
+#ifdef __cplusplus
+extern "C++" {
+
+/* Defining a syscall as a macro is more problematic in C++, since there's a high chance of
+ * a name collision e.g foo.syscall() or foo::syscall.
+ */
+inline long syscall(long n) {
+	return __do_syscall_ret(__do_syscall0(n));
+}
+template<typename Arg0>
+long syscall(long n, Arg0 a0) {
+	return __do_syscall_ret(__do_syscall1(n, (long)a0));
+}
+template<typename Arg0, typename Arg1>
+long syscall(long n, Arg0 a0, Arg1 a1) {
+	return __do_syscall_ret(__do_syscall2(n, (long)a0, (long)a1));
+}
+template<typename Arg0, typename Arg1, typename Arg2>
+long syscall(long n, Arg0 a0, Arg1 a1, Arg2 a2) {
+	return __do_syscall_ret(__do_syscall3(n, (long)a0, (long)a1, (long)a2));
+}
+template<typename Arg0, typename Arg1, typename Arg2, typename Arg3>
+long syscall(long n, Arg0 a0, Arg1 a1, Arg2 a2, Arg3 a3) {
+	return __do_syscall_ret(__do_syscall4(n, (long)a0, (long)a1, (long)a2, (long)a3));
+}
+template<typename Arg0, typename Arg1, typename Arg2, typename Arg3, typename Arg4>
+long syscall(long n, Arg0 a0, Arg1 a1, Arg2 a2, Arg3 a3, Arg4 a4) {
+	return __do_syscall_ret(__do_syscall5(n, (long)a0, (long)a1, (long)a2, (long)a3, (long)a4));
+}
+template<typename Arg0, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5>
+long syscall(long n, Arg0 a0, Arg1 a1, Arg2 a2, Arg3 a3, Arg4 a4, Arg5 a5) {
+	return __do_syscall_ret(__do_syscall6(n, (long)a0, (long)a1, (long)a2, (long)a3, (long)a4, (long)a5));
+}
+template<typename Arg0, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5, typename Arg6>
+long syscall(long n, Arg0 a0, Arg1 a1, Arg2 a2, Arg3 a3, Arg4 a4, Arg5 a5, Arg6 a6) {
+	return __do_syscall_ret(__do_syscall7(n, (long)a0, (long)a1, (long)a2, (long)a3, (long)a4, (long)a5, (long)a6));
+}
+
+} /* extern C++ */
+#else
+
+/*
+ * Variadic macros are not supported in C89.
+ * glibc implements syscall() as a variadic function, which we've ruled out.
+ * musl uses them without checking the C standard in use. So suppressing
+ * the check here seems reasonable.
+ */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wvariadic-macros"
+
+/* These syscall macros were copied from musl. */
+#define __scc(x) ((__sc_word_t)(x))
+#define __syscall0(n) __do_syscall0(n)
+#define __syscall1(n,a) __do_syscall1(n,__scc(a))
+#define __syscall2(n,a,b) __do_syscall2(n,__scc(a),__scc(b))
+#define __syscall3(n,a,b,c) __do_syscall3(n,__scc(a),__scc(b),__scc(c))
+#define __syscall4(n,a,b,c,d) __do_syscall4(n,__scc(a),__scc(b),__scc(c),__scc(d))
+#define __syscall5(n,a,b,c,d,e) __do_syscall5(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e))
+#define __syscall6(n,a,b,c,d,e,f) __do_syscall6(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f))
+#define __syscall7(n,a,b,c,d,e,f,g) __do_syscall7(n,__scc(a),__scc(b),__scc(c),__scc(d),__scc(e),__scc(f),__scc(g))
+#define __SYSCALL_NARGS_X(a,b,c,d,e,f,g,h,n,...) n
+#define __SYSCALL_NARGS(...) __SYSCALL_NARGS_X(__VA_ARGS__,7,6,5,4,3,2,1,0,)
+#define __SYSCALL_CONCAT_X(a,b) a##b
+#define __SYSCALL_CONCAT(a,b) __SYSCALL_CONCAT_X(a,b)
+#define __SYSCALL_DISP(b,...) __SYSCALL_CONCAT(b,__SYSCALL_NARGS(__VA_ARGS__))(__VA_ARGS__)
+#define __syscall(...) __SYSCALL_DISP(__syscall,__VA_ARGS__)
+#define syscall(...) __do_syscall_ret(__syscall(__VA_ARGS__))
+
+#pragma GCC diagnostic pop
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _MLIBC_SYSCALL_H */
@@ -0,0 +1,12 @@
+#ifndef MLIBC_THREAD_ENTRY
+
+#include <mlibc/tcb.hpp>
+
+extern "C" int __mlibc_spawn_thread(int flags, void *stack, void *pid_out, void *child_tid, void *tcb);
+extern "C" void __mlibc_enter_thread(void *entry, void *user_arg);
+
+namespace mlibc {
+	void *prepare_stack(void *entry, void *user_arg);
+}
+
+#endif // MLIBC_THREAD_ENTRY
@@ -0,0 +1,14 @@
+#ifndef _SYS_SYSCALL_H
+#define _SYS_SYSCALL_H
+
+/* On GNU/Linux, this header provides includes __NR_-prefixed syscall numbers,
+ * and their SYS_ aliases. We defer to kernel headers for the numbers
+ * (linux-headers, or an autogenerated stub while building), and an
+ * autogenerated file containing SYS_ defines.
+ */
+/* clang-format off */
+#include <linux/unistd.h>
+#include <bits/syscall_aliases.h>
+/* clang-format on */
+
+#endif /* _SYS_SYSCALL_H */
@@ -0,0 +1 @@
+#include <sys/syscall.h>
@@ -0,0 +1,117 @@
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+sc_word_t __do_syscall0(long sc) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) : "r"(sc_reg) : "memory", "a1");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc,
+		sc_word_t arg1) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg)
+			: "memory", "a1");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc,
+		sc_word_t arg1, sc_word_t arg2) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t arg5_reg asm("a4") = arg5;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t arg5_reg asm("a4") = arg5;
+	register sc_word_t arg6_reg asm("a5") = arg6;
+	register sc_word_t ret asm("a0");
+	asm volatile ("syscall 0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg),
+			"r"(arg6_reg)
+			: "memory"
+			);
+	return ret;
+}
@@ -0,0 +1,30 @@
+.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:
+	st.d $a7, $sp, -8
+	move $a7, $a0
+	move $a0, $a1
+	move $a1, $a2
+	move $a2, $a3
+	move $a3, $a4
+	move $a4, $a5
+	move $a5, $a6
+	move $a6, $a7
+	ld.w $t0, $tp, -96 // Tcb::cancelBits. See asserts in tcb.hpp.
+__mlibc_syscall_begin:
+	// tcbCancelEnableBit && tcbCancelTriggerBit
+	addi.d $t1, $r0, (1 << 0) | (1 << 2)
+	and $t0, $t0, $t1
+	beq $t0, $t1, cancel
+	syscall 0
+__mlibc_syscall_end:
+	ret
+
+cancel:
+	la.local $t2, __mlibc_do_cancel
+	jr $t2
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,11 @@
+.extern __mlibc_entry@plt
+
+.section .text
+.global _start
+_start:
+	move $a0, $sp
+	la $a1, main
+	bl %plt(__mlibc_entry)
+	break 0
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,11 @@
+.extern __mlibc_entry
+
+.section .text
+.global _start
+_start:
+	move $a0, $sp
+	la $a1, main
+	b __mlibc_entry
+	break 0
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,12 @@
+.section .text
+
+.global __mlibc_signal_restore
+.type __mlibc_signal_restore, @function
+__mlibc_signal_restore:
+.global __mlibc_signal_restore_rt
+.type __mlibc_signal_restore_rt, @function
+__mlibc_signal_restore_rt:
+	li.w $a7, 139 // __NR_rt_sigreturn
+	syscall 0
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,323 @@
+#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_io_setup 0
+#define __NR_io_destroy 1
+#define __NR_io_submit 2
+#define __NR_io_cancel 3
+#define __NR_io_getevents 4
+#define __NR_setxattr 5
+#define __NR_lsetxattr 6
+#define __NR_fsetxattr 7
+#define __NR_getxattr 8
+#define __NR_lgetxattr 9
+#define __NR_fgetxattr 10
+#define __NR_listxattr 11
+#define __NR_llistxattr 12
+#define __NR_flistxattr 13
+#define __NR_removexattr 14
+#define __NR_lremovexattr 15
+#define __NR_fremovexattr 16
+#define __NR_getcwd 17
+#define __NR_lookup_dcookie 18
+#define __NR_eventfd2 19
+#define __NR_epoll_create1 20
+#define __NR_epoll_ctl 21
+#define __NR_epoll_pwait 22
+#define __NR_dup 23
+#define __NR_dup3 24
+#define __NR_fcntl 25
+#define __NR_inotify_init1 26
+#define __NR_inotify_add_watch 27
+#define __NR_inotify_rm_watch 28
+#define __NR_ioctl 29
+#define __NR_ioprio_set 30
+#define __NR_ioprio_get 31
+#define __NR_flock 32
+#define __NR_mknodat 33
+#define __NR_mkdirat 34
+#define __NR_unlinkat 35
+#define __NR_symlinkat 36
+#define __NR_linkat 37
+#define __NR_umount2 39
+#define __NR_mount 40
+#define __NR_pivot_root 41
+#define __NR_nfsservctl 42
+#define __NR_statfs 43
+#define __NR_fstatfs 44
+#define __NR_truncate 45
+#define __NR_ftruncate 46
+#define __NR_fallocate 47
+#define __NR_faccessat 48
+#define __NR_chdir 49
+#define __NR_fchdir 50
+#define __NR_chroot 51
+#define __NR_fchmod 52
+#define __NR_fchmodat 53
+#define __NR_fchownat 54
+#define __NR_fchown 55
+#define __NR_openat 56
+#define __NR_close 57
+#define __NR_vhangup 58
+#define __NR_pipe2 59
+#define __NR_quotactl 60
+#define __NR_getdents64 61
+#define __NR_lseek 62
+#define __NR_read 63
+#define __NR_write 64
+#define __NR_readv 65
+#define __NR_writev 66
+#define __NR_pread64 67
+#define __NR_pwrite64 68
+#define __NR_preadv 69
+#define __NR_pwritev 70
+#define __NR_sendfile 71
+#define __NR_pselect6 72
+#define __NR_ppoll 73
+#define __NR_signalfd4 74
+#define __NR_vmsplice 75
+#define __NR_splice 76
+#define __NR_tee 77
+#define __NR_readlinkat 78
+#define __NR_newfstatat 79
+#define __NR_fstat 80
+#define __NR_sync 81
+#define __NR_fsync 82
+#define __NR_fdatasync 83
+#define __NR_sync_file_range 84
+#define __NR_timerfd_create 85
+#define __NR_timerfd_settime 86
+#define __NR_timerfd_gettime 87
+#define __NR_utimensat 88
+#define __NR_acct 89
+#define __NR_capget 90
+#define __NR_capset 91
+#define __NR_personality 92
+#define __NR_exit 93
+#define __NR_exit_group 94
+#define __NR_waitid 95
+#define __NR_set_tid_address 96
+#define __NR_unshare 97
+#define __NR_futex 98
+#define __NR_set_robust_list 99
+#define __NR_get_robust_list 100
+#define __NR_nanosleep 101
+#define __NR_getitimer 102
+#define __NR_setitimer 103
+#define __NR_kexec_load 104
+#define __NR_init_module 105
+#define __NR_delete_module 106
+#define __NR_timer_create 107
+#define __NR_timer_gettime 108
+#define __NR_timer_getoverrun 109
+#define __NR_timer_settime 110
+#define __NR_timer_delete 111
+#define __NR_clock_settime 112
+#define __NR_clock_gettime 113
+#define __NR_clock_getres 114
+#define __NR_clock_nanosleep 115
+#define __NR_syslog 116
+#define __NR_ptrace 117
+#define __NR_sched_setparam 118
+#define __NR_sched_setscheduler 119
+#define __NR_sched_getscheduler 120
+#define __NR_sched_getparam 121
+#define __NR_sched_setaffinity 122
+#define __NR_sched_getaffinity 123
+#define __NR_sched_yield 124
+#define __NR_sched_get_priority_max 125
+#define __NR_sched_get_priority_min 126
+#define __NR_sched_rr_get_interval 127
+#define __NR_restart_syscall 128
+#define __NR_kill 129
+#define __NR_tkill 130
+#define __NR_tgkill 131
+#define __NR_sigaltstack 132
+#define __NR_rt_sigsuspend 133
+#define __NR_rt_sigaction 134
+#define __NR_rt_sigprocmask 135
+#define __NR_rt_sigpending 136
+#define __NR_rt_sigtimedwait 137
+#define __NR_rt_sigqueueinfo 138
+#define __NR_rt_sigreturn 139
+#define __NR_setpriority 140
+#define __NR_getpriority 141
+#define __NR_reboot 142
+#define __NR_setregid 143
+#define __NR_setgid 144
+#define __NR_setreuid 145
+#define __NR_setuid 146
+#define __NR_setresuid 147
+#define __NR_getresuid 148
+#define __NR_setresgid 149
+#define __NR_getresgid 150
+#define __NR_setfsuid 151
+#define __NR_setfsgid 152
+#define __NR_times 153
+#define __NR_setpgid 154
+#define __NR_getpgid 155
+#define __NR_getsid 156
+#define __NR_setsid 157
+#define __NR_getgroups 158
+#define __NR_setgroups 159
+#define __NR_uname 160
+#define __NR_sethostname 161
+#define __NR_setdomainname 162
+#define __NR_getrusage 165
+#define __NR_umask 166
+#define __NR_prctl 167
+#define __NR_getcpu 168
+#define __NR_gettimeofday 169
+#define __NR_settimeofday 170
+#define __NR_adjtimex 171
+#define __NR_getpid 172
+#define __NR_getppid 173
+#define __NR_getuid 174
+#define __NR_geteuid 175
+#define __NR_getgid 176
+#define __NR_getegid 177
+#define __NR_gettid 178
+#define __NR_sysinfo 179
+#define __NR_mq_open 180
+#define __NR_mq_unlink 181
+#define __NR_mq_timedsend 182
+#define __NR_mq_timedreceive 183
+#define __NR_mq_notify 184
+#define __NR_mq_getsetattr 185
+#define __NR_msgget 186
+#define __NR_msgctl 187
+#define __NR_msgrcv 188
+#define __NR_msgsnd 189
+#define __NR_semget 190
+#define __NR_semctl 191
+#define __NR_semtimedop 192
+#define __NR_semop 193
+#define __NR_shmget 194
+#define __NR_shmctl 195
+#define __NR_shmat 196
+#define __NR_shmdt 197
+#define __NR_socket 198
+#define __NR_socketpair 199
+#define __NR_bind 200
+#define __NR_listen 201
+#define __NR_accept 202
+#define __NR_connect 203
+#define __NR_getsockname 204
+#define __NR_getpeername 205
+#define __NR_sendto 206
+#define __NR_recvfrom 207
+#define __NR_setsockopt 208
+#define __NR_getsockopt 209
+#define __NR_shutdown 210
+#define __NR_sendmsg 211
+#define __NR_recvmsg 212
+#define __NR_readahead 213
+#define __NR_brk 214
+#define __NR_munmap 215
+#define __NR_mremap 216
+#define __NR_add_key 217
+#define __NR_request_key 218
+#define __NR_keyctl 219
+#define __NR_clone 220
+#define __NR_execve 221
+#define __NR_mmap 222
+#define __NR_fadvise64 223
+#define __NR_swapon 224
+#define __NR_swapoff 225
+#define __NR_mprotect 226
+#define __NR_msync 227
+#define __NR_mlock 228
+#define __NR_munlock 229
+#define __NR_mlockall 230
+#define __NR_munlockall 231
+#define __NR_mincore 232
+#define __NR_madvise 233
+#define __NR_remap_file_pages 234
+#define __NR_mbind 235
+#define __NR_get_mempolicy 236
+#define __NR_set_mempolicy 237
+#define __NR_migrate_pages 238
+#define __NR_move_pages 239
+#define __NR_rt_tgsigqueueinfo 240
+#define __NR_perf_event_open 241
+#define __NR_accept4 242
+#define __NR_recvmmsg 243
+#define __NR_wait4 260
+#define __NR_prlimit64 261
+#define __NR_fanotify_init 262
+#define __NR_fanotify_mark 263
+#define __NR_name_to_handle_at 264
+#define __NR_open_by_handle_at 265
+#define __NR_clock_adjtime 266
+#define __NR_syncfs 267
+#define __NR_setns 268
+#define __NR_sendmmsg 269
+#define __NR_process_vm_readv 270
+#define __NR_process_vm_writev 271
+#define __NR_kcmp 272
+#define __NR_finit_module 273
+#define __NR_sched_setattr 274
+#define __NR_sched_getattr 275
+#define __NR_renameat2 276
+#define __NR_seccomp 277
+#define __NR_getrandom 278
+#define __NR_memfd_create 279
+#define __NR_bpf 280
+#define __NR_execveat 281
+#define __NR_userfaultfd 282
+#define __NR_membarrier 283
+#define __NR_mlock2 284
+#define __NR_copy_file_range 285
+#define __NR_preadv2 286
+#define __NR_pwritev2 287
+#define __NR_pkey_mprotect 288
+#define __NR_pkey_alloc 289
+#define __NR_pkey_free 290
+#define __NR_statx 291
+#define __NR_io_pgetevents 292
+#define __NR_rseq 293
+#define __NR_kexec_file_load 294
+#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_process_mrelease 448
+#define __NR_futex_waitv 449
+#define __NR_set_mempolicy_home_node 450
+#define __NR_cachestat 451
+#define __NR_fchmodat2 452
+#define __NR_map_shadow_stack 453
+#define __NR_futex_wake 454
+#define __NR_futex_wait 455
+#define __NR_futex_requeue 456
+#define __NR_statmount 457
+#define __NR_listmount 458
+#define __NR_lsm_get_self_attr 459
+#define __NR_lsm_set_self_attr 460
+#define __NR_lsm_list_modules 461
+#define __NR_mseal 462
+#define __NR_setxattrat 463
+#define __NR_getxattrat 464
+#define __NR_listxattrat 465
+#define __NR_removexattrat 466
+#endif /* __MLIBC_SYSCALLNOS_h */
@@ -0,0 +1,24 @@
+.section .text
+.global __mlibc_spawn_thread
+.type __mlibc_spawn_thread, "function"
+__mlibc_spawn_thread:
+	// __mlibc_spawn_thread(flags, stack, pid_out, child_tid, tls)
+	//                         a0,     a1,     a2,        a3,  a4
+	//           syscall(NR_clone, flags, stack, ptid, ctid, tls)
+	//                         a7,    a0,    a1,   a2,  a3,   a4
+
+	addi.d $a7, $zero, 220 // NR_clone
+	syscall 0
+	bnez $a0, .parent
+
+	ld.d $a0, $sp, 0
+	ld.d $a1, $sp, 8
+	addi.d $sp, $sp, 8
+	bstrins.d $sp, $sp, 3, 0
+	b __mlibc_enter_thread
+	break 0
+
+.parent:
+	ret
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,117 @@
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+sc_word_t __do_syscall0(long sc) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) : "r"(sc_reg) : "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc,
+		sc_word_t arg1) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc,
+		sc_word_t arg1, sc_word_t arg2) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t arg2_reg asm("d2") = arg2;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t arg2_reg asm("d2") = arg2;
+	register sc_word_t arg3_reg asm("d3") = arg3;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg)
+			: "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) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t arg2_reg asm("d2") = arg2;
+	register sc_word_t arg3_reg asm("d3") = arg3;
+	register sc_word_t arg4_reg asm("d4") = arg4;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg)
+			: "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) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t arg2_reg asm("d2") = arg2;
+	register sc_word_t arg3_reg asm("d3") = arg3;
+	register sc_word_t arg4_reg asm("d4") = arg4;
+	register sc_word_t arg5_reg asm("d5") = arg5;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg)
+			: "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) {
+	register int sc_reg asm("d0") = sc;
+	register sc_word_t arg1_reg asm("d1") = arg1;
+	register sc_word_t arg2_reg asm("d2") = arg2;
+	register sc_word_t arg3_reg asm("d3") = arg3;
+	register sc_word_t arg4_reg asm("d4") = arg4;
+	register sc_word_t arg5_reg asm("d5") = arg5;
+	register sc_word_t arg6_reg asm("a0") = arg6;
+	register sc_word_t ret asm("d0");
+	asm volatile ("trap #0" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg),
+			"r"(arg6_reg)
+			: "memory"
+			);
+	return ret;
+}
@@ -0,0 +1,28 @@
+
+.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:
+	movem.l %d2-%d5, -(%sp)
+	jbsr __m68k_read_tp@PLTPC
+	/* cancelBits is at TP - 0x7030; LSB at -0x702d */
+	move.b -0x702d(%a0), %d0
+__mlibc_syscall_begin:
+	/* tcbCancelEnableBit && tcbCancelTriggerBit */
+	andi.b #0x5, %d0
+	cmpi.b #0x5, %d0
+	beq cancel
+	movem.l 20(%sp), %d0-%d5/%a0
+	trap #0
+__mlibc_syscall_end:
+	movem.l (%sp)+, %d2-%d5
+	rts
+
+cancel:
+	movem.l (%sp)+, %d2-%d5
+	jbsr __mlibc_do_cancel@PLTPC
+	illegal
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,16 @@
+.section .text
+.global _start
+
+.type _start, %function
+.type main, %function
+.type __mlibc_entry, %function
+
+_start:
+	suba.l %fp, %fp
+	move.l %sp, %d0
+	lea _GLOBAL_OFFSET_TABLE_@GOTPC (%pc), %a5
+	move.l main@GOT(%a5), -(%sp)
+	move.l %d0, -(%sp)
+	jbsr __mlibc_entry@PLTPC
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,15 @@
+.section .text
+.global _start
+
+.type _start, %function
+.type main, %function
+.type __mlibc_entry, %function
+
+_start:
+	suba.l %fp, %fp
+	move.l %sp, %d0
+	move.l #main, -(%sp)
+	move.l %d0, -(%sp)
+	jsr __mlibc_entry
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,9 @@
+.section ".init"
+.global _init
+_init:
+
+.section ".fini"
+.globl _fini
+_fini:
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,7 @@
+.section .init
+	rts
+
+.section .fini
+	rts
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,19 @@
+.section .text
+
+.global __mlibc_signal_restore
+.type __mlibc_signal_restore, @function
+__mlibc_signal_restore:
+	move.l (%sp)+, %d1
+	move.l #119, %d0
+	trap #0
+	illegal
+
+.global __mlibc_signal_restore_rt
+.type __mlibc_signal_restore_rt, @function
+__mlibc_signal_restore_rt:
+	move.l (%sp)+, %d1
+	move.l #173, %d0
+	trap #0
+	illegal
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,442 @@
+#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_chown 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_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_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_vhangup 111
+#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_cacheflush 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_getpagesize 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_lchown 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_chown32 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_lchown32 212
+#define __NR_setuid32 213
+#define __NR_setgid32 214
+#define __NR_setfsuid32 215
+#define __NR_setfsgid32 216
+#define __NR_pivot_root 217
+#define __NR_getdents64 220
+#define __NR_gettid 221
+#define __NR_tkill 222
+#define __NR_setxattr 223
+#define __NR_lsetxattr 224
+#define __NR_fsetxattr 225
+#define __NR_getxattr 226
+#define __NR_lgetxattr 227
+#define __NR_fgetxattr 228
+#define __NR_listxattr 229
+#define __NR_llistxattr 230
+#define __NR_flistxattr 231
+#define __NR_removexattr 232
+#define __NR_lremovexattr 233
+#define __NR_fremovexattr 234
+#define __NR_futex 235
+#define __NR_sendfile64 236
+#define __NR_mincore 237
+#define __NR_madvise 238
+#define __NR_fcntl64 239
+#define __NR_readahead 240
+#define __NR_io_setup 241
+#define __NR_io_destroy 242
+#define __NR_io_getevents 243
+#define __NR_io_submit 244
+#define __NR_io_cancel 245
+#define __NR_fadvise64 246
+#define __NR_exit_group 247
+#define __NR_lookup_dcookie 248
+#define __NR_epoll_create 249
+#define __NR_epoll_ctl 250
+#define __NR_epoll_wait 251
+#define __NR_remap_file_pages 252
+#define __NR_set_tid_address 253
+#define __NR_timer_create 254
+#define __NR_timer_settime 255
+#define __NR_timer_gettime 256
+#define __NR_timer_getoverrun 257
+#define __NR_timer_delete 258
+#define __NR_clock_settime 259
+#define __NR_clock_gettime 260
+#define __NR_clock_getres 261
+#define __NR_clock_nanosleep 262
+#define __NR_statfs64 263
+#define __NR_fstatfs64 264
+#define __NR_tgkill 265
+#define __NR_utimes 266
+#define __NR_fadvise64_64 267
+#define __NR_mbind 268
+#define __NR_get_mempolicy 269
+#define __NR_set_mempolicy 270
+#define __NR_mq_open 271
+#define __NR_mq_unlink 272
+#define __NR_mq_timedsend 273
+#define __NR_mq_timedreceive 274
+#define __NR_mq_notify 275
+#define __NR_mq_getsetattr 276
+#define __NR_waitid 277
+#define __NR_add_key 279
+#define __NR_request_key 280
+#define __NR_keyctl 281
+#define __NR_ioprio_set 282
+#define __NR_ioprio_get 283
+#define __NR_inotify_init 284
+#define __NR_inotify_add_watch 285
+#define __NR_inotify_rm_watch 286
+#define __NR_migrate_pages 287
+#define __NR_openat 288
+#define __NR_mkdirat 289
+#define __NR_mknodat 290
+#define __NR_fchownat 291
+#define __NR_futimesat 292
+#define __NR_fstatat64 293
+#define __NR_unlinkat 294
+#define __NR_renameat 295
+#define __NR_linkat 296
+#define __NR_symlinkat 297
+#define __NR_readlinkat 298
+#define __NR_fchmodat 299
+#define __NR_faccessat 300
+#define __NR_pselect6 301
+#define __NR_ppoll 302
+#define __NR_unshare 303
+#define __NR_set_robust_list 304
+#define __NR_get_robust_list 305
+#define __NR_splice 306
+#define __NR_sync_file_range 307
+#define __NR_tee 308
+#define __NR_vmsplice 309
+#define __NR_move_pages 310
+#define __NR_sched_setaffinity 311
+#define __NR_sched_getaffinity 312
+#define __NR_kexec_load 313
+#define __NR_getcpu 314
+#define __NR_epoll_pwait 315
+#define __NR_utimensat 316
+#define __NR_signalfd 317
+#define __NR_timerfd_create 318
+#define __NR_eventfd 319
+#define __NR_fallocate 320
+#define __NR_timerfd_settime 321
+#define __NR_timerfd_gettime 322
+#define __NR_signalfd4 323
+#define __NR_eventfd2 324
+#define __NR_epoll_create1 325
+#define __NR_dup3 326
+#define __NR_pipe2 327
+#define __NR_inotify_init1 328
+#define __NR_preadv 329
+#define __NR_pwritev 330
+#define __NR_rt_tgsigqueueinfo 331
+#define __NR_perf_event_open 332
+#define __NR_get_thread_area 333
+#define __NR_set_thread_area 334
+#define __NR_atomic_cmpxchg_32 335
+#define __NR_atomic_barrier 336
+#define __NR_fanotify_init 337
+#define __NR_fanotify_mark 338
+#define __NR_prlimit64 339
+#define __NR_name_to_handle_at 340
+#define __NR_open_by_handle_at 341
+#define __NR_clock_adjtime 342
+#define __NR_syncfs 343
+#define __NR_setns 344
+#define __NR_process_vm_readv 345
+#define __NR_process_vm_writev 346
+#define __NR_kcmp 347
+#define __NR_finit_module 348
+#define __NR_sched_setattr 349
+#define __NR_sched_getattr 350
+#define __NR_renameat2 351
+#define __NR_getrandom 352
+#define __NR_memfd_create 353
+#define __NR_bpf 354
+#define __NR_execveat 355
+#define __NR_socket 356
+#define __NR_socketpair 357
+#define __NR_bind 358
+#define __NR_connect 359
+#define __NR_listen 360
+#define __NR_accept4 361
+#define __NR_getsockopt 362
+#define __NR_setsockopt 363
+#define __NR_getsockname 364
+#define __NR_getpeername 365
+#define __NR_sendto 366
+#define __NR_sendmsg 367
+#define __NR_recvfrom 368
+#define __NR_recvmsg 369
+#define __NR_shutdown 370
+#define __NR_recvmmsg 371
+#define __NR_sendmmsg 372
+#define __NR_userfaultfd 373
+#define __NR_membarrier 374
+#define __NR_mlock2 375
+#define __NR_copy_file_range 376
+#define __NR_preadv2 377
+#define __NR_pwritev2 378
+#define __NR_statx 379
+#define __NR_seccomp 380
+#define __NR_pkey_mprotect 381
+#define __NR_pkey_alloc 382
+#define __NR_pkey_free 383
+#define __NR_rseq 384
+#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_process_mrelease 448
+#define __NR_futex_waitv 449
+#define __NR_set_mempolicy_home_node 450
+#define __NR_cachestat 451
+#define __NR_fchmodat2 452
+#define __NR_map_shadow_stack 453
+#define __NR_futex_wake 454
+#define __NR_futex_wait 455
+#define __NR_futex_requeue 456
+#define __NR_statmount 457
+#define __NR_listmount 458
+#define __NR_lsm_get_self_attr 459
+#define __NR_lsm_set_self_attr 460
+#define __NR_lsm_list_modules 461
+#define __NR_mseal 462
+#define __NR_setxattrat 463
+#define __NR_getxattrat 464
+#define __NR_listxattrat 465
+#define __NR_removexattrat 466
+#endif /* __MLIBC_SYSCALLNOS_h */
@@ -0,0 +1,24 @@
+.section .text
+.global __mlibc_spawn_thread
+.type __mlibc_spawn_thread, "function"
+/* int (int flags, void *stack, void *pid_out, void *child_tid, void *tcb); */
+__mlibc_spawn_thread:
+	movem.l %d2-%d5, -(%sp)
+
+	move.l #120, %d0
+	movem.l 20(%sp), %d1-%d5
+	addi.l #0x7048, %d5
+	trap #0
+
+	tst.l %d0
+	beq 1f
+
+	movem.l (%sp)+, %d2-%d5
+	rts
+
+1:
+	jbsr __mlibc_enter_thread@PLTPC
+	illegal
+
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,170 @@
+sysdep_supported_options = {
+	'posix': true,
+	'linux': true,
+	'glibc': true,
+	'bsd': true,
+}
+
+rtld_dso_sources += files(
+	host_machine.cpu_family() / 'arch-syscall.cpp',
+	'generic/sysdeps.cpp',
+)
+
+linux_include_dirs = [
+	include_directories(host_machine.cpu_family()),
+	include_directories('include-internal/'),
+]
+
+rtld_include_dirs += linux_include_dirs
+libc_include_dirs += linux_include_dirs
+libc_sources += files(
+	host_machine.cpu_family() / 'signals.S',
+	host_machine.cpu_family() / 'arch-syscall.cpp',
+	host_machine.cpu_family() / 'assembly-asserts.cpp',
+	'generic/entry.cpp',
+	'generic/sysdeps.cpp',
+)
+
+if get_option('posix_option').allowed()
+	libc_sources += files(
+		'generic/thread.cpp',
+		host_machine.cpu_family() / 'cp_syscall.S',
+		host_machine.cpu_family() / 'thread_entry.S'
+	)
+endif
+
+if not no_headers
+	install_headers(
+		'include/abi-bits/auxv.h',
+		'include/abi-bits/seek-whence.h',
+		'include/abi-bits/vm-flags.h',
+		'include/abi-bits/errno.h',
+		'include/abi-bits/fcntl.h',
+		'include/abi-bits/in.h',
+		'include/abi-bits/stat.h',
+		'include/abi-bits/statx.h',
+		'include/abi-bits/signal.h',
+		'include/abi-bits/reboot.h',
+		'include/abi-bits/resource.h',
+		'include/abi-bits/socket.h',
+		'include/abi-bits/termios.h',
+		'include/abi-bits/time.h',
+		'include/abi-bits/blkcnt_t.h',
+		'include/abi-bits/blksize_t.h',
+		'include/abi-bits/dev_t.h',
+		'include/abi-bits/gid_t.h',
+		'include/abi-bits/ino_t.h',
+		'include/abi-bits/mode_t.h',
+		'include/abi-bits/nlink_t.h',
+		'include/abi-bits/pid_t.h',
+		'include/abi-bits/uid_t.h',
+		'include/abi-bits/access.h',
+		'include/abi-bits/wait.h',
+		'include/abi-bits/limits.h',
+		'include/abi-bits/utsname.h',
+		'include/abi-bits/ptrace.h',
+		'include/abi-bits/vt.h',
+		'include/abi-bits/ptrace.h',
+		'include/abi-bits/poll.h',
+		'include/abi-bits/epoll.h',
+		'include/abi-bits/packet.h',
+		'include/abi-bits/inotify.h',
+		'include/abi-bits/clockid_t.h',
+		'include/abi-bits/ipc.h',
+		'include/abi-bits/shm.h',
+		'include/abi-bits/mqueue.h',
+		'include/abi-bits/suseconds_t.h',
+		'include/abi-bits/fsfilcnt_t.h',
+		'include/abi-bits/fsblkcnt_t.h',
+		'include/abi-bits/socklen_t.h',
+		'include/abi-bits/statfs.h',
+		'include/abi-bits/statvfs.h',
+		'include/abi-bits/ioctls.h',
+		'include/abi-bits/xattr.h',
+		'include/abi-bits/msg.h',
+		'include/abi-bits/random.h',
+		'include/abi-bits/rlim_t.h',
+		'include/abi-bits/sigval.h',
+		'include/abi-bits/sigevent.h',
+		'include/abi-bits/utmpx.h',
+		'include/abi-bits/utmp-defines.h',
+		subdir: 'abi-bits',
+		follow_symlinks: true
+	)
+
+	if host_machine.cpu_family() == 'riscv64'
+		install_headers(
+			'include/abi-bits/riscv-hwprobe.h',
+			subdir: 'abi-bits',
+			follow_symlinks: true
+		)
+	endif
+
+	install_headers('include/syscall.h')
+	install_headers('include/sys/syscall.h', subdir: 'sys')
+	install_headers(
+		'include/bits/syscall.h',
+		'include/bits/syscall_aliases.h',
+		subdir: 'bits'
+	)
+endif
+
+if not headers_only
+	crt = custom_target('crt1',
+		build_by_default: true,
+		command: c_compiler.cmd_array() + ['-c', '-o', '@OUTPUT@', '@INPUT@'],
+		input: host_machine.cpu_family() / 'crt-src/crt1.S',
+		output: 'crt1.o',
+		install: true,
+		install_dir: get_option('libdir')
+	)
+
+	crt_pie = custom_target('Scrt1',
+		build_by_default: true,
+		command: c_compiler.cmd_array() + ['-fPIE', '-c', '-o', '@OUTPUT@', '@INPUT@'],
+		input: host_machine.cpu_family() / 'crt-src/Scrt1.S',
+		output: 'Scrt1.o',
+		install: true,
+		install_dir: get_option('libdir')
+	)
+
+	# On RISC-V and LoongArch, crti.o and crtn.o are provided by GCC.
+	if host_machine.cpu_family() != 'riscv64' and host_machine.cpu_family() != 'loongarch64'
+		custom_target('crti',
+			build_by_default: true,
+			command: c_compiler.cmd_array() + ['-c', '-o', '@OUTPUT@', '@INPUT@'],
+			input: host_machine.cpu_family() / 'crt-src/crti.S',
+			output: 'crti.o',
+			install: true,
+			install_dir: get_option('libdir')
+		)
+
+		custom_target('crtn',
+			build_by_default: true,
+			command: c_compiler.cmd_array() + ['-c', '-o', '@OUTPUT@', '@INPUT@'],
+			input: host_machine.cpu_family() / 'crt-src/crtn.S',
+			output: 'crtn.o',
+			install: true,
+			install_dir: get_option('libdir')
+		)
+	endif
+
+	wrapper_conf = configuration_data()
+	wrapper_conf.set('LIBDIR', get_option('libdir'))
+	wrapper_conf.set('PREFIX', get_option('prefix'))
+	specs = configure_file(input: 'mlibc-gcc.specs.in',
+			output: 'mlibc-gcc.specs',
+			configuration: wrapper_conf)
+
+	wrapper_script = configure_file(input: 'mlibc-gcc.in',
+			output: 'mlibc-gcc',
+			configuration: wrapper_conf)
+
+	install_data(specs,
+		install_dir: get_option('libdir')
+	)
+
+	install_data(wrapper_script,
+		install_dir: get_option('bindir')
+	)
+endif
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec "${REALGCC:-gcc}" "$@" -specs "@PREFIX@/@LIBDIR@/mlibc-gcc.specs"
@@ -0,0 +1,32 @@
+%rename cpp_options old_cpp_options
+
+*cpp_options:
+-nostdinc -isystem @PREFIX@/include -isystem include%s %(old_cpp_options)
+
+*cc1:
+%(cc1_cpu) -nostdinc -isystem @PREFIX@/include -isystem include%s
+
+*link_libgcc:
+-L@PREFIX@/@LIBDIR@ -L .%s
+
+*libgcc:
+libgcc.a%s %:if-exists(libgcc_eh.a%s)
+
+*startfile:
+%{!shared: @PREFIX@/@LIBDIR@/Scrt1.o} @PREFIX@/@LIBDIR@/crti.o crtbeginS.o%s
+
+*endfile:
+crtendS.o%s @PREFIX@/@LIBDIR@/crtn.o
+
+*link:
+-dynamic-linker @PREFIX@/@LIBDIR@/ld.so -rpath @PREFIX@/@LIBDIR@ -nostdlib %{shared:-shared} %{static:-static} %{rdynamic:-export-dynamic}
+
+*esp_link:
+
+
+*esp_options:
+
+
+*esp_cpp_options:
+
+
@@ -0,0 +1,117 @@
+#include <sys/syscall.h>
+#include <bits/syscall.h>
+
+using sc_word_t = __sc_word_t;
+
+sc_word_t __do_syscall0(long sc) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) : "r"(sc_reg) : "memory", "a1");
+	return ret;
+}
+
+sc_word_t __do_syscall1(long sc,
+		sc_word_t arg1) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg)
+			: "memory", "a1");
+	return ret;
+}
+
+sc_word_t __do_syscall2(long sc,
+		sc_word_t arg1, sc_word_t arg2) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg)
+			: "memory");
+	return ret;
+}
+
+sc_word_t __do_syscall3(long sc,
+		sc_word_t arg1, sc_word_t arg2, sc_word_t arg3) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t arg5_reg asm("a4") = arg5;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg)
+			: "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) {
+	register int sc_reg asm("a7") = sc;
+	register sc_word_t arg1_reg asm("a0") = arg1;
+	register sc_word_t arg2_reg asm("a1") = arg2;
+	register sc_word_t arg3_reg asm("a2") = arg3;
+	register sc_word_t arg4_reg asm("a3") = arg4;
+	register sc_word_t arg5_reg asm("a4") = arg5;
+	register sc_word_t arg6_reg asm("a5") = arg6;
+	register sc_word_t ret asm("a0");
+	asm volatile ("ecall" : "=r"(ret) :
+			"r"(sc_reg),
+			"r"(arg1_reg),
+			"r"(arg2_reg),
+			"r"(arg3_reg),
+			"r"(arg4_reg),
+			"r"(arg5_reg),
+			"r"(arg6_reg)
+			: "memory"
+			);
+	return ret;
+}
@@ -0,0 +1,30 @@
+.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:
+	sd a7, -8(sp)
+	mv a7, a0
+	mv a0, a1
+	mv a1, a2
+	mv a2, a3
+	mv a3, a4
+	mv a4, a5
+	mv a5, a6
+	ld a6, -8(sp) // a7
+	lw t0, -96(tp) // Tcb::cancelBits. See asserts in tcb.hpp.
+__mlibc_syscall_begin:
+	// tcbCancelEnableBit && tcbCancelTriggerBit
+	li t1, (1 << 0) | (1 << 2)
+	and t0, t0, t1
+	beq t0, t1, cancel
+	ecall
+__mlibc_syscall_end:
+	ret
+
+cancel:
+	call __mlibc_do_cancel
+	unimp
+.section .note.GNU-stack,"",%progbits
+
@@ -0,0 +1,30 @@
+.weak __global_pointer$
+.hidden __global_pointer$
+
+.section .text
+.global _start
+_start:
+	# Load gp.
+.option push
+.option norelax
+	lla gp, __global_pointer$
+.option pop
+
+	mv a0, sp
+	la a1, main
+	call __mlibc_entry@plt
+	unimp
+
+# Load gp from .preinit_array since it may be used by the executable's .init_array.
+# We still load it in _start to account for static binaries. This matches glibc's behavior.
+load_gp:
+.option push
+.option norelax
+	lla gp, __global_pointer$
+.option pop
+	ret
+
+.section .preinit_array,"aw"
+	.dword load_gp
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,30 @@
+.weak __global_pointer$
+.hidden __global_pointer$
+
+.section .text
+.global _start
+_start:
+	# Load gp.
+.option push
+.option norelax
+	lla gp, __global_pointer$
+.option pop
+
+	mv a0, sp
+	la a1, main
+	call __mlibc_entry
+	unimp
+
+# Load gp from .preinit_array since it may be used by the executable's .init_array.
+# We still load it in _start to account for static binaries. This matches glibc's behavior.
+load_gp:
+.option push
+.option norelax
+	lla gp, __global_pointer$
+.option pop
+	ret
+
+.section .preinit_array,"aw"
+	.dword load_gp
+
+.section .note.GNU-stack,"",%progbits
@@ -0,0 +1,12 @@
+.section .text
+
+.global __mlibc_signal_restore
+.type __mlibc_signal_restore, @function
+__mlibc_signal_restore:
+.global __mlibc_signal_restore_rt
+.type __mlibc_signal_restore_rt, @function
+__mlibc_signal_restore_rt:
+	li a7, 139
+	ecall
+.section .note.GNU-stack,"",%progbits
+
--- a/Show More
+++ b/Show More