Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 1372 insertions, 0 deletions

diff --git a/vendor/hermit-abi-0.2.6/.cargo-checksum.json b/vendor/hermit-abi-0.2.6/.cargo-checksum.json
new file mode 100644
index 000000000..53188c450
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/.cargo-checksum.json
@@ -0,0 +1 @@
+{"files":{"Cargo.toml":"1b4c80e131e223ca0213e4efe1eda533cd665213aa94ec8920e9b65139cd2122","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"322fadd63e558e5a10caf980cbedf83ac1546ba40fd992f54492e21ce54205af","src/errno.rs":"1c0680ead2ddf26b12d34bd7fa3e1dab386df761d6ac1901889ece26682dc465","src/lib.rs":"f444c2cf2b93506719841cc46605dcded34d0a4b50ff7d5da8d56044610ca463","src/tcplistener.rs":"c6e2db06d4265fa0956851e1c965336d60c53ab21573729aae76ecfe0ccc84c3","src/tcpstream.rs":"38a17de54213faf9de217f6146ff86ee75b67d4404a532b1419903269200936b"},"package":"ee512640fe35acbfb4bb779db6f0d80704c2cacfa2e39b601ef3e3f47d1ae4c7"}
\ No newline at end of file
diff --git a/vendor/hermit-abi-0.2.6/Cargo.toml b/vendor/hermit-abi-0.2.6/Cargo.toml
new file mode 100644
index 000000000..314aa6ad4
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/Cargo.toml
@@ -0,0 +1,62 @@
+# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
+#
+# When uploading crates to the registry Cargo will automatically
+# "normalize" Cargo.toml files for maximal compatibility
+# with all versions of Cargo and also rewrite `path` dependencies
+# to registry (e.g., crates.io) dependencies.
+#
+# If you are reading this file be aware that the original Cargo.toml
+# will likely look very different (and much more reasonable).
+# See Cargo.toml.orig for the original contents.
+
+[package]
+edition = "2021"
+name = "hermit-abi"
+version = "0.2.6"
+authors = ["Stefan Lankes"]
+description = """
+hermit-abi is small interface to call functions from the unikernel RustyHermit.
+It is used to build the target `x86_64-unknown-hermit`.
+"""
+documentation = "https://hermitcore.github.io/rusty-hermit/hermit_abi"
+readme = "README.md"
+keywords = [
+    "unikernel",
+    "libos",
+]
+categories = ["os"]
+license = "MIT/Apache-2.0"
+repository = "https://github.com/hermitcore/rusty-hermit"
+resolver = "1"
+
+[package.metadata.docs.rs]
+features = ["docs"]
+default-target = "x86_64-unknown-hermit"
+
+[dependencies.alloc]
+version = "1.0.0"
+optional = true
+package = "rustc-std-workspace-alloc"
+
+[dependencies.compiler_builtins]
+version = "0.1"
+optional = true
+
+[dependencies.core]
+version = "1.0.0"
+optional = true
+package = "rustc-std-workspace-core"
+
+[dependencies.libc]
+version = "0.2"
+default-features = false
+
+[features]
+default = []
+docs = []
+rustc-dep-of-std = [
+    "core",
+    "alloc",
+    "compiler_builtins/rustc-dep-of-std",
+    "libc/rustc-dep-of-std",
+]
diff --git a/vendor/hermit-abi-0.2.6/LICENSE-APACHE b/vendor/hermit-abi-0.2.6/LICENSE-APACHE
new file mode 100644
index 000000000..16fe87b06
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/LICENSE-APACHE
@@ -0,0 +1,201 @@
+                              Apache License
+                        Version 2.0, January 2004
+                     http://www.apache.org/licenses/
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+   "License" shall mean the terms and conditions for use, reproduction,
+   and distribution as defined by Sections 1 through 9 of this document.
+
+   "Licensor" shall mean the copyright owner or entity authorized by
+   the copyright owner that is granting the License.
+
+   "Legal Entity" shall mean the union of the acting entity and all
+   other entities that control, are controlled by, or are under common
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+   "control" means (i) the power, direct or indirect, to cause the
+   direction or management of such entity, whether by contract or
+   otherwise, or (ii) ownership of fifty percent (50%) or more of the
+   outstanding shares, or (iii) beneficial ownership of such entity.
+
+   "You" (or "Your") shall mean an individual or Legal Entity
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+   "Source" form shall mean the preferred form for making modifications,
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+   "Work" shall mean the work of authorship, whether in Source or
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+
+5. Submission of Contributions. Unless You explicitly state otherwise,
+   any Contribution intentionally submitted for inclusion in the Work
+   by You to the Licensor shall be under the terms and conditions of
+   this License, without any additional terms or conditions.
+   Notwithstanding the above, nothing herein shall supersede or modify
+   the terms of any separate license agreement you may have executed
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+6. Trademarks. This License does not grant permission to use the trade
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+7. Disclaimer of Warranty. Unless required by applicable law or
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+   Contributor provides its Contributions) on an "AS IS" BASIS,
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+8. Limitation of Liability. In no event and under no legal theory,
+   whether in tort (including negligence), contract, or otherwise,
+   unless required by applicable law (such as deliberate and grossly
+   negligent acts) or agreed to in writing, shall any Contributor be
+   liable to You for damages, including any direct, indirect, special,
+   incidental, or consequential damages of any character arising as a
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+   on Your own behalf and on Your sole responsibility, not on behalf
+   of any other Contributor, and only if You agree to indemnify,
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+   incurred by, or claims asserted against, such Contributor by reason
+   of your accepting any such warranty or additional liability.
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+END OF TERMS AND CONDITIONS
+
+APPENDIX: How to apply the Apache License to your work.
+
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+   boilerplate notice, with the fields enclosed by brackets "[]"
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+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
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+Unless required by applicable law or agreed to in writing, software
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+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
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diff --git a/vendor/hermit-abi-0.2.6/LICENSE-MIT b/vendor/hermit-abi-0.2.6/LICENSE-MIT
new file mode 100644
index 000000000..31aa79387
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/LICENSE-MIT
@@ -0,0 +1,23 @@
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
diff --git a/vendor/hermit-abi-0.2.6/README.md b/vendor/hermit-abi-0.2.6/README.md
new file mode 100644
index 000000000..c75bfda0d
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/README.md
@@ -0,0 +1,22 @@
+# hermit-abi
+
+[![Crates.io](https://img.shields.io/crates/v/hermit-abi.svg)](https://crates.io/crates/hermit-abi)
+[![Documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://hermitcore.github.io/rusty-hermit/hermit_abi/)
+[![License](https://img.shields.io/crates/l/hermit-abi.svg)](https://img.shields.io/crates/l/hermit-abi.svg)
+
+This is small interface to call functions from the unikernel [RustyHermit](https://github.com/hermitcore/libhermit-rs).
+
+Please read the README of [RustyHermit](https://github.com/hermitcore/libhermit-rs) for more information.
+
+## License
+
+Licensed under either of
+
+* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
+* MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
+
+at your option.
+
+## Contribution
+
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.
diff --git a/vendor/hermit-abi-0.2.6/src/errno.rs b/vendor/hermit-abi-0.2.6/src/errno.rs
new file mode 100644
index 000000000..dc22dc8ce
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/src/errno.rs
@@ -0,0 +1,397 @@
+/// Operation not permitted
+pub const EPERM: i32 = 1;
+
+/// No such file or directory
+pub const ENOENT: i32 = 2;
+
+/// No such process
+pub const ESRCH: i32 = 3;
+
+/// Interrupted system call
+pub const EINTR: i32 = 4;
+
+/// I/O error
+pub const EIO: i32 = 5;
+
+/// No such device or address
+pub const ENXIO: i32 = 6;
+
+/// Argument list too long
+pub const E2BIG: i32 = 7;
+
+/// Exec format error
+pub const ENOEXEC: i32 = 8;
+
+/// Bad file number
+pub const EBADF: i32 = 9;
+
+/// No child processes
+pub const ECHILD: i32 = 10;
+
+/// Try again
+pub const EAGAIN: i32 = 11;
+
+/// Out of memory
+pub const ENOMEM: i32 = 12;
+
+/// Permission denied
+pub const EACCES: i32 = 13;
+
+/// Bad address
+pub const EFAULT: i32 = 14;
+
+/// Block device required
+pub const ENOTBLK: i32 = 15;
+
+/// Device or resource busy
+pub const EBUSY: i32 = 16;
+
+/// File exists
+pub const EEXIST: i32 = 17;
+
+/// Cross-device link
+pub const EXDEV: i32 = 18;
+
+/// No such device
+pub const ENODEV: i32 = 19;
+
+/// Not a directory
+pub const ENOTDIR: i32 = 20;
+
+/// Is a directory
+pub const EISDIR: i32 = 21;
+
+/// Invalid argument
+pub const EINVAL: i32 = 22;
+
+/// File table overflow
+pub const ENFILE: i32 = 23;
+
+/// Too many open files
+pub const EMFILE: i32 = 24;
+
+/// Not a typewriter
+pub const ENOTTY: i32 = 25;
+
+/// Text file busy
+pub const ETXTBSY: i32 = 26;
+
+/// File too large
+pub const EFBIG: i32 = 27;
+
+/// No space left on device
+pub const ENOSPC: i32 = 28;
+
+/// Illegal seek
+pub const ESPIPE: i32 = 29;
+
+/// Read-only file system
+pub const EROFS: i32 = 30;
+
+/// Too many links
+pub const EMLINK: i32 = 31;
+
+/// Broken pipe
+pub const EPIPE: i32 = 32;
+
+/// Math argument out of domain of func
+pub const EDOM: i32 = 33;
+
+/// Math result not representable
+pub const ERANGE: i32 = 34;
+
+/// Resource deadlock would occur
+pub const EDEADLK: i32 = 35;
+
+/// File name too long
+pub const ENAMETOOLONG: i32 = 36;
+
+/// No record locks available
+pub const ENOLCK: i32 = 37;
+
+/// Function not implemented
+pub const ENOSYS: i32 = 38;
+
+/// Directory not empty
+pub const ENOTEMPTY: i32 = 39;
+
+/// Too many symbolic links encountered
+pub const ELOOP: i32 = 40;
+
+/// Operation would block
+pub const EWOULDBLOCK: i32 = EAGAIN;
+
+/// No message of desired type
+pub const ENOMSG: i32 = 42;
+
+/// Identifier removed
+pub const EIDRM: i32 = 43;
+
+/// Channel number out of range
+pub const ECHRNG: i32 = 44;
+
+/// Level 2 not synchronized
+pub const EL2NSYNC: i32 = 45;
+
+/// Level 3 halted
+pub const EL3HLT: i32 = 46;
+
+/// Level 3 reset
+pub const EL3RST: i32 = 47;
+
+/// Link number out of range
+pub const ELNRNG: i32 = 48;
+
+/// Protocol driver not attached
+pub const EUNATCH: i32 = 49;
+
+/// No CSI structure available
+pub const ENOCSI: i32 = 50;
+
+/// Level 2 halted
+pub const EL2HLT: i32 = 51;
+
+/// Invalid exchange
+pub const EBADE: i32 = 52;
+
+/// Invalid request descriptor
+pub const EBADR: i32 = 53;
+
+/// Exchange full
+pub const EXFULL: i32 = 54;
+
+/// No anode
+pub const ENOANO: i32 = 55;
+
+/// Invalid request code
+pub const EBADRQC: i32 = 56;
+
+/// Invalid slot
+pub const EBADSLT: i32 = 57;
+
+pub const EDEADLOCK: i32 = EDEADLK;
+
+/// Bad font file format
+pub const EBFONT: i32 = 59;
+
+/// Device not a stream
+pub const ENOSTR: i32 = 60;
+
+/// No data available
+pub const ENODATA: i32 = 61;
+
+/// Timer expired
+pub const ETIME: i32 = 62;
+
+/// Out of streams resources
+pub const ENOSR: i32 = 63;
+
+/// Machine is not on the network
+pub const ENONET: i32 = 64;
+
+/// Package not installed
+pub const ENOPKG: i32 = 65;
+
+/// Object is remote
+pub const EREMOTE: i32 = 66;
+
+/// Link has been severed
+pub const ENOLINK: i32 = 67;
+
+/// Advertise error
+pub const EADV: i32 = 68;
+
+/// Srmount error
+pub const ESRMNT: i32 = 69;
+
+/// Communication error on send
+pub const ECOMM: i32 = 70;
+
+/// Protocol error
+pub const EPROTO: i32 = 71;
+
+/// Multihop attempted
+pub const EMULTIHOP: i32 = 72;
+
+/// RFS specific error
+pub const EDOTDOT: i32 = 73;
+
+/// Not a data message
+pub const EBADMSG: i32 = 74;
+
+/// Value too large for defined data type
+pub const EOVERFLOW: i32 = 75;
+
+/// Name not unique on network
+pub const ENOTUNIQ: i32 = 76;
+
+/// File descriptor in bad state
+pub const EBADFD: i32 = 77;
+
+/// Remote address changed
+pub const EREMCHG: i32 = 78;
+
+/// Can not access a needed shared library
+pub const ELIBACC: i32 = 79;
+
+/// Accessing a corrupted shared library
+pub const ELIBBAD: i32 = 80;
+
+/// .lib section in a.out corrupted
+pub const ELIBSCN: i32 = 81;
+
+/// Attempting to link in too many shared libraries
+pub const ELIBMAX: i32 = 82;
+
+/// Cannot exec a shared library directly
+pub const ELIBEXEC: i32 = 83;
+
+/// Illegal byte sequence
+pub const EILSEQ: i32 = 84;
+
+/// Interrupted system call should be restarted
+pub const ERESTART: i32 = 85;
+
+/// Streams pipe error
+pub const ESTRPIPE: i32 = 86;
+
+/// Too many users
+pub const EUSERS: i32 = 87;
+
+/// Socket operation on non-socket
+pub const ENOTSOCK: i32 = 88;
+
+/// Destination address required
+pub const EDESTADDRREQ: i32 = 89;
+
+/// Message too long
+pub const EMSGSIZE: i32 = 90;
+
+/// Protocol wrong type for socket
+pub const EPROTOTYPE: i32 = 91;
+
+/// Protocol not available
+pub const ENOPROTOOPT: i32 = 92;
+
+/// Protocol not supported
+pub const EPROTONOSUPPORT: i32 = 93;
+
+/// Socket type not supported
+pub const ESOCKTNOSUPPORT: i32 = 94;
+
+/// Operation not supported on transport endpoint
+pub const EOPNOTSUPP: i32 = 95;
+
+/// Protocol family not supported
+pub const EPFNOSUPPORT: i32 = 96;
+
+/// Address family not supported by protocol
+pub const EAFNOSUPPORT: i32 = 97;
+
+/// Address already in use
+pub const EADDRINUSE: i32 = 98;
+
+/// Cannot assign requested address
+pub const EADDRNOTAVAIL: i32 = 99;
+
+/// Network is down
+pub const ENETDOWN: i32 = 100;
+
+/// Network is unreachable
+pub const ENETUNREACH: i32 = 101;
+
+/// Network dropped connection because of reset
+pub const ENETRESET: i32 = 102;
+
+/// Software caused connection abort
+pub const ECONNABORTED: i32 = 103;
+
+/// Connection reset by peer
+pub const ECONNRESET: i32 = 104;
+
+/// No buffer space available
+pub const ENOBUFS: i32 = 105;
+
+/// Transport endpoint is already connected
+pub const EISCONN: i32 = 106;
+
+/// Transport endpoint is not connected
+pub const ENOTCONN: i32 = 107;
+
+/// Cannot send after transport endpoint shutdown
+pub const ESHUTDOWN: i32 = 108;
+
+/// Too many references: cannot splice
+pub const ETOOMANYREFS: i32 = 109;
+
+/// Connection timed out
+pub const ETIMEDOUT: i32 = 110;
+
+/// Connection refused
+pub const ECONNREFUSED: i32 = 111;
+
+/// Host is down
+pub const EHOSTDOWN: i32 = 112;
+
+/// No route to host
+pub const EHOSTUNREACH: i32 = 113;
+
+/// Operation already in progress
+pub const EALREADY: i32 = 114;
+
+/// Operation now in progress
+pub const EINPROGRESS: i32 = 115;
+
+/// Stale file handle
+pub const ESTALE: i32 = 116;
+
+/// Structure needs cleaning
+pub const EUCLEAN: i32 = 117;
+
+/// Not a XENIX named type file
+pub const ENOTNAM: i32 = 118;
+
+/// No XENIX semaphores available
+pub const ENAVAIL: i32 = 119;
+
+/// Is a named type file
+pub const EISNAM: i32 = 120;
+
+/// Remote I/O error
+pub const EREMOTEIO: i32 = 121;
+
+/// Quota exceeded
+pub const EDQUOT: i32 = 122;
+
+/// No medium found
+pub const ENOMEDIUM: i32 = 123;
+
+/// Wrong medium type
+pub const EMEDIUMTYPE: i32 = 124;
+
+/// Operation Canceled
+pub const ECANCELED: i32 = 125;
+
+/// Required key not available
+pub const ENOKEY: i32 = 126;
+
+/// Key has expired
+pub const EKEYEXPIRED: i32 = 127;
+
+/// Key has been revoked
+pub const EKEYREVOKED: i32 = 128;
+
+/// Key was rejected by service
+pub const EKEYREJECTED: i32 = 129;
+
+/// Robust mutexes: Owner died
+pub const EOWNERDEAD: i32 = 130;
+
+/// Robust mutexes: State not recoverable
+pub const ENOTRECOVERABLE: i32 = 131;
+
+/// Robust mutexes: Operation not possible due to RF-kill
+pub const ERFKILL: i32 = 132;
+
+/// Robust mutexes: Memory page has hardware error
+pub const EHWPOISON: i32 = 133;
diff --git a/vendor/hermit-abi-0.2.6/src/lib.rs b/vendor/hermit-abi-0.2.6/src/lib.rs
new file mode 100644
index 000000000..2a8a2e2dc
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/src/lib.rs
@@ -0,0 +1,544 @@
+//! `hermit-abi` is small interface to call functions from the unikernel
+//! [RustyHermit](https://github.com/hermitcore/libhermit-rs).
+
+#![no_std]
+#![allow(clippy::missing_safety_doc)]
+#![allow(clippy::result_unit_err)]
+
+pub mod errno;
+pub mod tcplistener;
+pub mod tcpstream;
+
+use core::mem::MaybeUninit;
+
+use libc::c_void;
+
+// sysmbols, which are part of the library operating system
+
+extern "C" {
+	fn sys_rand() -> u32;
+	fn sys_srand(seed: u32);
+	fn sys_secure_rand32(value: *mut u32) -> i32;
+	fn sys_secure_rand64(value: *mut u64) -> i32;
+	fn sys_get_processor_count() -> usize;
+	fn sys_malloc(size: usize, align: usize) -> *mut u8;
+	fn sys_realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8;
+	fn sys_free(ptr: *mut u8, size: usize, align: usize);
+	fn sys_init_queue(ptr: usize) -> i32;
+	fn sys_notify(id: usize, count: i32) -> i32;
+	fn sys_add_queue(id: usize, timeout_ns: i64) -> i32;
+	fn sys_wait(id: usize) -> i32;
+	fn sys_destroy_queue(id: usize) -> i32;
+	fn sys_read(fd: i32, buf: *mut u8, len: usize) -> isize;
+	fn sys_write(fd: i32, buf: *const u8, len: usize) -> isize;
+	fn sys_close(fd: i32) -> i32;
+	fn sys_futex_wait(
+		address: *mut u32,
+		expected: u32,
+		timeout: *const timespec,
+		flags: u32,
+	) -> i32;
+	fn sys_futex_wake(address: *mut u32, count: i32) -> i32;
+	fn sys_sem_init(sem: *mut *const c_void, value: u32) -> i32;
+	fn sys_sem_destroy(sem: *const c_void) -> i32;
+	fn sys_sem_post(sem: *const c_void) -> i32;
+	fn sys_sem_trywait(sem: *const c_void) -> i32;
+	fn sys_sem_timedwait(sem: *const c_void, ms: u32) -> i32;
+	fn sys_recmutex_init(recmutex: *mut *const c_void) -> i32;
+	fn sys_recmutex_destroy(recmutex: *const c_void) -> i32;
+	fn sys_recmutex_lock(recmutex: *const c_void) -> i32;
+	fn sys_recmutex_unlock(recmutex: *const c_void) -> i32;
+	fn sys_getpid() -> u32;
+	fn sys_exit(arg: i32) -> !;
+	fn sys_abort() -> !;
+	fn sys_usleep(usecs: u64);
+	fn sys_spawn(
+		id: *mut Tid,
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		core_id: isize,
+	) -> i32;
+	fn sys_spawn2(
+		func: extern "C" fn(usize),
+		arg: usize,
+		prio: u8,
+		stack_size: usize,
+		core_id: isize,
+	) -> Tid;
+	fn sys_join(id: Tid) -> i32;
+	fn sys_yield();
+	fn sys_clock_gettime(clock_id: u64, tp: *mut timespec) -> i32;
+	fn sys_open(name: *const i8, flags: i32, mode: i32) -> i32;
+	fn sys_unlink(name: *const i8) -> i32;
+	fn sys_network_init() -> i32;
+	fn sys_block_current_task();
+	fn sys_block_current_task_with_timeout(timeout: u64);
+	fn sys_wakeup_task(tid: Tid);
+	fn sys_get_priority() -> u8;
+	fn sys_set_priority(tid: Tid, prio: u8);
+}
+
+/// A thread handle type
+pub type Tid = u32;
+
+/// Maximum number of priorities
+pub const NO_PRIORITIES: usize = 31;
+
+/// Priority of a thread
+#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Clone, Copy)]
+pub struct Priority(u8);
+
+impl Priority {
+	pub const fn into(self) -> u8 {
+		self.0
+	}
+
+	pub const fn from(x: u8) -> Self {
+		Priority(x)
+	}
+}
+
+pub const HIGH_PRIO: Priority = Priority::from(3);
+pub const NORMAL_PRIO: Priority = Priority::from(2);
+pub const LOW_PRIO: Priority = Priority::from(1);
+
+/// A handle, identifying a socket
+#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Default, Hash)]
+pub struct Handle(usize);
+
+pub const NSEC_PER_SEC: u64 = 1_000_000_000;
+pub const FUTEX_RELATIVE_TIMEOUT: u32 = 1;
+pub const CLOCK_REALTIME: u64 = 1;
+pub const CLOCK_MONOTONIC: u64 = 4;
+pub const STDIN_FILENO: libc::c_int = 0;
+pub const STDOUT_FILENO: libc::c_int = 1;
+pub const STDERR_FILENO: libc::c_int = 2;
+pub const O_RDONLY: i32 = 0o0;
+pub const O_WRONLY: i32 = 0o1;
+pub const O_RDWR: i32 = 0o2;
+pub const O_CREAT: i32 = 0o100;
+pub const O_EXCL: i32 = 0o200;
+pub const O_TRUNC: i32 = 0o1000;
+pub const O_APPEND: i32 = 0o2000;
+
+/// returns true if file descriptor `fd` is a tty
+pub fn isatty(_fd: libc::c_int) -> bool {
+	false
+}
+
+/// initialize the network stack
+pub fn network_init() -> i32 {
+	unsafe { sys_network_init() }
+}
+
+/// `timespec` is used by `clock_gettime` to retrieve the
+/// current time
+#[derive(Copy, Clone, Debug)]
+#[repr(C)]
+pub struct timespec {
+	/// seconds
+	pub tv_sec: i64,
+	/// nanoseconds
+	pub tv_nsec: i64,
+}
+
+/// Internet protocol version.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
+pub enum Version {
+	Unspecified,
+	Ipv4,
+	Ipv6,
+}
+
+/// A four-octet IPv4 address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default)]
+pub struct Ipv4Address(pub [u8; 4]);
+
+/// A sixteen-octet IPv6 address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy, Default)]
+pub struct Ipv6Address(pub [u8; 16]);
+
+/// An internetworking address.
+#[derive(Debug, Hash, PartialEq, Eq, PartialOrd, Ord, Clone, Copy)]
+pub enum IpAddress {
+	/// An unspecified address.
+	/// May be used as a placeholder for storage where the address is not assigned yet.
+	Unspecified,
+	/// An IPv4 address.
+	Ipv4(Ipv4Address),
+	/// An IPv6 address.
+	Ipv6(Ipv6Address),
+}
+
+/// determines the number of activated processors
+#[inline(always)]
+pub unsafe fn get_processor_count() -> usize {
+	sys_get_processor_count()
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn malloc(size: usize, align: usize) -> *mut u8 {
+	sys_malloc(size, align)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn realloc(ptr: *mut u8, size: usize, align: usize, new_size: usize) -> *mut u8 {
+	sys_realloc(ptr, size, align, new_size)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn free(ptr: *mut u8, size: usize, align: usize) {
+	sys_free(ptr, size, align)
+}
+
+#[inline(always)]
+pub unsafe fn notify(id: usize, count: i32) -> i32 {
+	sys_notify(id, count)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn add_queue(id: usize, timeout_ns: i64) -> i32 {
+	sys_add_queue(id, timeout_ns)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn wait(id: usize) -> i32 {
+	sys_wait(id)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn init_queue(id: usize) -> i32 {
+	sys_init_queue(id)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn destroy_queue(id: usize) -> i32 {
+	sys_destroy_queue(id)
+}
+
+/// read from a file descriptor
+///
+/// read() attempts to read `len` bytes of data from the object
+/// referenced by the descriptor `fd` into the buffer pointed
+/// to by `buf`.
+#[inline(always)]
+pub unsafe fn read(fd: i32, buf: *mut u8, len: usize) -> isize {
+	sys_read(fd, buf, len)
+}
+
+/// write to a file descriptor
+///
+/// write() attempts to write `len` of data to the object
+/// referenced by the descriptor `fd` from the
+/// buffer pointed to by `buf`.
+#[inline(always)]
+pub unsafe fn write(fd: i32, buf: *const u8, len: usize) -> isize {
+	sys_write(fd, buf, len)
+}
+
+/// close a file descriptor
+///
+/// The close() call deletes a file descriptor `fd` from the object
+/// reference table.
+#[inline(always)]
+pub unsafe fn close(fd: i32) -> i32 {
+	sys_close(fd)
+}
+
+/// If the value at address matches the expected value, park the current thread until it is either
+/// woken up with [`futex_wake`] (returns 0) or an optional timeout elapses (returns -ETIMEDOUT).
+///
+/// Setting `timeout` to null means the function will only return if [`futex_wake`] is called.
+/// Otherwise, `timeout` is interpreted as an absolute time measured with [`CLOCK_MONOTONIC`].
+/// If [`FUTEX_RELATIVE_TIMEOUT`] is set in `flags` the timeout is understood to be relative
+/// to the current time.
+///
+/// Returns -EINVAL if `address` is null, the timeout is negative or `flags` contains unknown values.
+#[inline(always)]
+pub unsafe fn futex_wait(
+	address: *mut u32,
+	expected: u32,
+	timeout: *const timespec,
+	flags: u32,
+) -> i32 {
+	sys_futex_wait(address, expected, timeout, flags)
+}
+
+/// Wake `count` threads waiting on the futex at `address`. Returns the number of threads
+/// woken up (saturates to `i32::MAX`). If `count` is `i32::MAX`, wake up all matching
+/// waiting threads. If `count` is negative or `address` is null, returns -EINVAL.
+#[inline(always)]
+pub unsafe fn futex_wake(address: *mut u32, count: i32) -> i32 {
+	sys_futex_wake(address, count)
+}
+
+/// sem_init() initializes the unnamed semaphore at the address
+/// pointed to by `sem`.  The `value` argument specifies the
+/// initial value for the semaphore.
+#[inline(always)]
+pub unsafe fn sem_init(sem: *mut *const c_void, value: u32) -> i32 {
+	sys_sem_init(sem, value)
+}
+
+/// sem_destroy() frees the unnamed semaphore at the address
+/// pointed to by `sem`.
+#[inline(always)]
+pub unsafe fn sem_destroy(sem: *const c_void) -> i32 {
+	sys_sem_destroy(sem)
+}
+
+/// sem_post() increments the semaphore pointed to by `sem`.
+/// If the semaphore's value consequently becomes greater
+/// than zero, then another thread blocked in a sem_wait call
+/// will be woken up and proceed to lock the semaphore.
+#[inline(always)]
+pub unsafe fn sem_post(sem: *const c_void) -> i32 {
+	sys_sem_post(sem)
+}
+
+/// try to decrement a semaphore
+///
+/// sem_trywait() is the same as sem_timedwait(), except that
+/// if the  decrement cannot be immediately performed, then  call
+/// returns a negative value instead of blocking.
+#[inline(always)]
+pub unsafe fn sem_trywait(sem: *const c_void) -> i32 {
+	sys_sem_trywait(sem)
+}
+
+/// decrement a semaphore
+///
+/// sem_timedwait() decrements the semaphore pointed to by `sem`.
+/// If the semaphore's value is greater than zero, then the
+/// the function returns immediately. If the semaphore currently
+/// has the value zero, then the call blocks until either
+/// it becomes possible to perform the decrement of the time limit
+/// to wait for the semaphore is expired. A time limit `ms` of
+/// means infinity waiting time.
+#[inline(always)]
+pub unsafe fn sem_timedwait(sem: *const c_void, ms: u32) -> i32 {
+	sys_sem_timedwait(sem, ms)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_init(recmutex: *mut *const c_void) -> i32 {
+	sys_recmutex_init(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_destroy(recmutex: *const c_void) -> i32 {
+	sys_recmutex_destroy(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_lock(recmutex: *const c_void) -> i32 {
+	sys_recmutex_lock(recmutex)
+}
+
+#[doc(hidden)]
+#[inline(always)]
+pub unsafe fn recmutex_unlock(recmutex: *const c_void) -> i32 {
+	sys_recmutex_unlock(recmutex)
+}
+
+/// Determines the id of the current thread
+#[inline(always)]
+pub unsafe fn getpid() -> u32 {
+	sys_getpid()
+}
+
+/// cause normal termination and return `arg`
+/// to the host system
+#[inline(always)]
+pub unsafe fn exit(arg: i32) -> ! {
+	sys_exit(arg)
+}
+
+/// cause abnormal termination
+#[inline(always)]
+pub unsafe fn abort() -> ! {
+	sys_abort()
+}
+
+/// suspend execution for microsecond intervals
+///
+/// The usleep() function suspends execution of the calling
+/// thread for (at least) `usecs` microseconds.
+#[inline(always)]
+pub unsafe fn usleep(usecs: u64) {
+	sys_usleep(usecs)
+}
+
+/// spawn a new thread
+///
+/// spawn() starts a new thread. The new thread starts execution
+/// by invoking `func(usize)`; `arg` is passed as the argument
+/// to `func`. `prio` defines the priority of the new thread,
+/// which can be between `LOW_PRIO` and `HIGH_PRIO`.
+/// `core_id` defines the core, where the thread is located.
+/// A negative value give the operating system the possibility
+/// to select the core by its own.
+#[inline(always)]
+pub unsafe fn spawn(
+	id: *mut Tid,
+	func: extern "C" fn(usize),
+	arg: usize,
+	prio: u8,
+	core_id: isize,
+) -> i32 {
+	sys_spawn(id, func, arg, prio, core_id)
+}
+
+/// spawn a new thread with user-specified stack size
+///
+/// spawn2() starts a new thread. The new thread starts execution
+/// by invoking `func(usize)`; `arg` is passed as the argument
+/// to `func`. `prio` defines the priority of the new thread,
+/// which can be between `LOW_PRIO` and `HIGH_PRIO`.
+/// `core_id` defines the core, where the thread is located.
+/// A negative value give the operating system the possibility
+/// to select the core by its own.
+/// In contrast to spawn(), spawn2() is able to define the
+/// stack size.
+#[inline(always)]
+pub unsafe fn spawn2(
+	func: extern "C" fn(usize),
+	arg: usize,
+	prio: u8,
+	stack_size: usize,
+	core_id: isize,
+) -> Tid {
+	sys_spawn2(func, arg, prio, stack_size, core_id)
+}
+
+/// join with a terminated thread
+///
+/// The join() function waits for the thread specified by `id`
+/// to terminate.
+#[inline(always)]
+pub unsafe fn join(id: Tid) -> i32 {
+	sys_join(id)
+}
+
+/// yield the processor
+///
+/// causes the calling thread to relinquish the CPU. The thread
+/// is moved to the end of the queue for its static priority.
+#[inline(always)]
+pub unsafe fn yield_now() {
+	sys_yield()
+}
+
+/// get current time
+///
+/// The clock_gettime() functions allow the calling thread
+/// to retrieve the value used by a clock which is specified
+/// by `clock_id`.
+///
+/// `CLOCK_REALTIME`: the system's real time clock,
+/// expressed as the amount of time since the Epoch.
+///
+/// `CLOCK_MONOTONIC`: clock that increments monotonically,
+/// tracking the time since an arbitrary point
+#[inline(always)]
+pub unsafe fn clock_gettime(clock_id: u64, tp: *mut timespec) -> i32 {
+	sys_clock_gettime(clock_id, tp)
+}
+
+/// open and possibly create a file
+///
+/// The open() system call opens the file specified by `name`.
+/// If the specified file does not exist, it may optionally
+/// be created by open().
+#[inline(always)]
+pub unsafe fn open(name: *const i8, flags: i32, mode: i32) -> i32 {
+	sys_open(name, flags, mode)
+}
+
+/// delete the file it refers to `name`
+#[inline(always)]
+pub unsafe fn unlink(name: *const i8) -> i32 {
+	sys_unlink(name)
+}
+
+/// The largest number `rand` will return
+pub const RAND_MAX: u64 = 2_147_483_647;
+
+/// The function computes a sequence of pseudo-random integers
+/// in the range of 0 to RAND_MAX
+#[inline(always)]
+pub unsafe fn rand() -> u32 {
+	sys_rand()
+}
+
+/// The function sets its argument as the seed for a new sequence
+/// of pseudo-random numbers to be returned by `rand`
+#[inline(always)]
+pub unsafe fn srand(seed: u32) {
+	sys_srand(seed);
+}
+
+/// Create a cryptographicly secure 32bit random number with the support of
+/// the underlying hardware. If the required hardware isn't available,
+/// the function returns `None`.
+#[inline(always)]
+pub unsafe fn secure_rand32() -> Option<u32> {
+	let mut rand = MaybeUninit::uninit();
+	let res = sys_secure_rand32(rand.as_mut_ptr());
+	(res == 0).then(|| rand.assume_init())
+}
+
+/// Create a cryptographicly secure 64bit random number with the support of
+/// the underlying hardware. If the required hardware isn't available,
+/// the function returns `None`.
+#[inline(always)]
+pub unsafe fn secure_rand64() -> Option<u64> {
+	let mut rand = MaybeUninit::uninit();
+	let res = sys_secure_rand64(rand.as_mut_ptr());
+	(res == 0).then(|| rand.assume_init())
+}
+
+/// Add current task to the queue of blocked tasks. After calling `block_current_task`,
+/// call `yield_now` to switch to another task.
+#[inline(always)]
+pub unsafe fn block_current_task() {
+	sys_block_current_task();
+}
+
+/// Add current task to the queue of blocked tasks, but wake it when `timeout` milliseconds
+/// have elapsed.
+///
+/// After calling `block_current_task`, call `yield_now` to switch to another task.
+#[inline(always)]
+pub unsafe fn block_current_task_with_timeout(timeout: u64) {
+	sys_block_current_task_with_timeout(timeout);
+}
+
+/// Wakeup task with the thread id `tid`
+#[inline(always)]
+pub unsafe fn wakeup_task(tid: Tid) {
+	sys_wakeup_task(tid);
+}
+
+/// Determine the priority of the current thread
+#[inline(always)]
+pub unsafe fn get_priority() -> Priority {
+	Priority::from(sys_get_priority())
+}
+
+/// Determine the priority of the current thread
+#[inline(always)]
+pub unsafe fn set_priority(tid: Tid, prio: Priority) {
+	sys_set_priority(tid, prio.into());
+}
diff --git a/vendor/hermit-abi-0.2.6/src/tcplistener.rs b/vendor/hermit-abi-0.2.6/src/tcplistener.rs
new file mode 100644
index 000000000..5afe67364
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/src/tcplistener.rs
@@ -0,0 +1,13 @@
+//! `tcplistener` provide an interface to establish tcp socket server.
+
+use crate::{Handle, IpAddress};
+
+extern "Rust" {
+	fn sys_tcp_listener_accept(port: u16) -> Result<(Handle, IpAddress, u16), ()>;
+}
+
+/// Wait for connection at specified address.
+#[inline(always)]
+pub fn accept(port: u16) -> Result<(Handle, IpAddress, u16), ()> {
+	unsafe { sys_tcp_listener_accept(port) }
+}
diff --git a/vendor/hermit-abi-0.2.6/src/tcpstream.rs b/vendor/hermit-abi-0.2.6/src/tcpstream.rs
new file mode 100644
index 000000000..3024d379f
--- /dev/null
+++ b/vendor/hermit-abi-0.2.6/src/tcpstream.rs
@@ -0,0 +1,109 @@
+//! `tcpstream` provide an interface to establish tcp socket client.
+
+use crate::{Handle, IpAddress};
+
+extern "Rust" {
+	fn sys_tcp_stream_connect(ip: &[u8], port: u16, timeout: Option<u64>) -> Result<Handle, ()>;
+	fn sys_tcp_stream_close(handle: Handle) -> Result<(), ()>;
+	fn sys_tcp_stream_read(handle: Handle, buffer: &mut [u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_write(handle: Handle, buffer: &[u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_set_read_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()>;
+	fn sys_tcp_stream_get_read_timeout(handle: Handle) -> Result<Option<u64>, ()>;
+	fn sys_tcp_stream_set_write_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()>;
+	fn sys_tcp_stream_get_write_timeout(handle: Handle) -> Result<Option<u64>, ()>;
+	fn sys_tcp_stream_peek(handle: Handle, buf: &mut [u8]) -> Result<usize, ()>;
+	fn sys_tcp_stream_set_nonblocking(handle: Handle, mode: bool) -> Result<(), ()>;
+	fn sys_tcp_stream_set_tll(handle: Handle, ttl: u32) -> Result<(), ()>;
+	fn sys_tcp_stream_get_tll(handle: Handle) -> Result<u32, ()>;
+	fn sys_tcp_stream_shutdown(handle: Handle, how: i32) -> Result<(), ()>;
+	fn sys_tcp_stream_peer_addr(handle: Handle) -> Result<(IpAddress, u16), ()>;
+}
+
+/// Opens a TCP connection to a remote host.
+#[inline(always)]
+pub fn connect(ip: &[u8], port: u16, timeout: Option<u64>) -> Result<Handle, ()> {
+	unsafe { sys_tcp_stream_connect(ip, port, timeout) }
+}
+
+/// Close a TCP connection
+#[inline(always)]
+pub fn close(handle: Handle) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_close(handle) }
+}
+
+#[inline(always)]
+pub fn peek(handle: Handle, buf: &mut [u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_peek(handle, buf) }
+}
+
+#[inline(always)]
+pub fn peer_addr(handle: Handle) -> Result<(IpAddress, u16), ()> {
+	unsafe { sys_tcp_stream_peer_addr(handle) }
+}
+#[inline(always)]
+pub fn read(handle: Handle, buffer: &mut [u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_read(handle, buffer) }
+}
+
+#[inline(always)]
+pub fn write(handle: Handle, buffer: &[u8]) -> Result<usize, ()> {
+	unsafe { sys_tcp_stream_write(handle, buffer) }
+}
+
+#[inline(always)]
+pub fn set_read_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_read_timeout(handle, timeout) }
+}
+
+#[inline(always)]
+pub fn set_write_timeout(handle: Handle, timeout: Option<u64>) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_write_timeout(handle, timeout) }
+}
+
+#[inline(always)]
+pub fn get_read_timeout(handle: Handle) -> Result<Option<u64>, ()> {
+	unsafe { sys_tcp_stream_get_read_timeout(handle) }
+}
+
+#[inline(always)]
+pub fn get_write_timeout(handle: Handle) -> Result<Option<u64>, ()> {
+	unsafe { sys_tcp_stream_get_write_timeout(handle) }
+}
+
+#[inline(always)]
+pub fn set_nodelay(_: Handle, mode: bool) -> Result<(), ()> {
+	// smoltcp does not support Nagle's algorithm
+	// => to enable Nagle's algorithm isn't possible
+	if mode {
+		Ok(())
+	} else {
+		Err(())
+	}
+}
+
+#[inline(always)]
+pub fn nodelay(_: Handle) -> Result<bool, ()> {
+	// smoltcp does not support Nagle's algorithm
+	// => return always true
+	Ok(true)
+}
+
+#[inline(always)]
+pub fn set_nonblocking(handle: Handle, mode: bool) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_nonblocking(handle, mode) }
+}
+
+#[inline(always)]
+pub fn set_tll(handle: Handle, ttl: u32) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_set_tll(handle, ttl) }
+}
+
+#[inline(always)]
+pub fn get_tll(handle: Handle) -> Result<u32, ()> {
+	unsafe { sys_tcp_stream_get_tll(handle) }
+}
+
+#[inline(always)]
+pub fn shutdown(handle: Handle, how: i32) -> Result<(), ()> {
+	unsafe { sys_tcp_stream_shutdown(handle, how) }
+}