Add preliminary support for zephyr embedded OS to libc and std.

Author: tomtom5152

Cargo.toml

@@ -31,5 +31,5 @@ const-extern-fn = []
 # use_std is deprecated, use `std` instead
 use_std = [ 'std' ]
 
-[workspace]
-members = ["libc-test"]
+#[workspace]
+#members = ["libc-test"]

src/unix/mod.rs

@@ -29,7 +29,7 @@ pub type sighandler_t = ::size_t;
 pub type cc_t = ::c_uchar;
 
 cfg_if! {
-    if #[cfg(any(target_os = "espidf", target_os = "horizon"))] {
+    if #[cfg(any(target_os = "espidf", target_os = "horizon", target_os = "zephyr"))] {
         pub type uid_t = ::c_ushort;
         pub type gid_t = ::c_ushort;
     } else {

src/unix/newlib/mod.rs

@@ -27,7 +27,7 @@ pub type pthread_key_t = ::c_uint;
 pub type rlim_t = u32;
 
 cfg_if! {
-    if #[cfg(target_os = "horizon")] {
+    if #[cfg(any(target_os = "horizon", target_os = "zephyr"))] {
         pub type sa_family_t = u16;
     } else {
         pub type sa_family_t = u8;
@@ -731,6 +731,9 @@ cfg_if! {
     } else if #[cfg(target_os = "horizon")] {
         mod horizon;
         pub use self::horizon::*;
+    } else if #[cfg(target_os = "zephyr")] {
+        mod zephyr;
+        pub use self::zephyr::*;
     } else if #[cfg(target_arch = "arm")] {
         mod arm;
         pub use self::arm::*;

src/unix/newlib/zephyr/mod.rs

@@ -0,0 +1,211 @@
+pub type c_char = i8;
+pub type c_long = i32;
+pub type c_ulong = u32;
+
+pub type wchar_t = ::c_uint;
+
+// pub type u_char = ::c_uchar;
+// pub type u_short = ::c_ushort;
+// pub type u_int = ::c_uint;
+// pub type u_long = c_ulong;
+// pub type ushort = ::c_ushort;
+// pub type uint = ::c_uint;
+// pub type ulong = c_ulong;
+pub type clock_t = c_ulong;
+// pub type daddr_t = c_long;
+// pub type caddr_t = *mut c_char;
+// pub type sbintime_t = ::c_longlong;
+// pub type sigset_t = ::c_ulong;
+
+s! {
+    pub struct cmsghdr {
+        pub cmsg_len: ::socklen_t,
+        pub cmsg_level: ::c_int,
+        pub cmsg_type: ::c_int,
+    }
+
+    pub struct msghdr {
+        pub msg_name: *mut ::c_void,
+        pub msg_namelen: ::socklen_t,
+        pub msg_iov: *mut ::iovec,
+        pub msg_iovlen: ::c_int,
+        pub msg_control: *mut ::c_void,
+        pub msg_controllen: ::size_t,
+        pub msg_flags: ::c_int,
+    }
+
+    pub struct sockaddr {
+        pub sa_family: ::sa_family_t,
+        pub data: [::c_char; NET_SOCKADDR_MAX_SIZE], // previously [:14]
+    }
+
+    pub struct sockaddr_in6 {
+        pub sin6_family: ::sa_family_t,
+        pub sin6_port: ::in_port_t,
+        pub sin6_addr: ::in6_addr,
+        pub sin6_scope_id: u8,
+    }
+
+    pub struct sockaddr_in {
+        pub sin_family: ::sa_family_t,
+        pub sin_port: ::in_port_t,
+        pub sin_addr: ::in_addr,
+    }
+
+    pub struct sockaddr_storage {
+        pub ss_family: ::sa_family_t,
+        pub data: [::c_char; NET_SOCKADDR_MAX_SIZE]
+    }
+
+    pub struct sockaddr_un {
+        pub sun_family: ::sa_family_t,
+        pub sun_path: [::c_char; NET_SOCKADDR_MAX_SIZE]
+    }
+}
+
+pub const NET_SOCKADDR_MAX_SIZE: size_t = crate::mem::size_of::<sockaddr_in6>();
+
+pub const PF_UNSPEC: ::c_long = 0;
+/**< Unspecified protocol family.  */
+pub const PF_INET: ::c_long = 1;
+/**< IP protocol family version 4. */
+pub const PF_INET6: ::c_long = 2;
+/**< IP protocol family version 6. */
+pub const PF_PACKET: ::c_long = 3;
+/**< Packet family.                */
+pub const PF_CAN: ::c_long = 4;
+/**< Controller Area Network.      */
+pub const PF_NET_MGMT: ::c_long = 5;
+/**< Network management info.      */
+pub const PF_LOCAL: ::c_long = 6;
+/**< Inter-process communication   */
+pub const PF_UNIX: ::c_long = PF_LOCAL;
+/**< Inter-process communication   */
+
+pub const AF_UNSPEC: ::c_long = PF_UNSPEC;
+/**< Unspecified address family.   */
+pub const AF_INET: ::c_long = PF_INET;
+/**< IP protocol family version 4. */
+pub const AF_INET6: ::c_long = PF_INET6;
+/**< IP protocol family version 6. */
+pub const AF_PACKET: ::c_long = PF_PACKET;
+/**< Packet family.                */
+pub const AF_CAN: ::c_long = PF_CAN;
+/**< Controller Area Network.      */
+pub const AF_NET_MGMT: ::c_long = PF_NET_MGMT;
+/**< Network management info.      */
+pub const AF_LOCAL: ::c_long = PF_LOCAL;
+/**< Inter-process communication   */
+pub const AF_UNIX: ::c_long = PF_UNIX;
+/**< Inter-process communication   */
+
+pub const FIONBIO: ::c_ulong = 2147772030;
+
+pub const ZSOCK_POLLIN: ::c_short = 0x1;
+pub const ZSOCK_POLLPRI: ::c_short = 0x2;
+pub const ZSOCK_POLLHUP: ::c_short = 0x4;
+pub const ZSOCK_POLLERR: ::c_short = 0x8;
+pub const ZSOCK_POLLOUT: ::c_short = 0x10;
+pub const ZSOCK_POLLNVAL: ::c_short = 0x20;
+
+pub const POLLIN: ::c_short = ZSOCK_POLLIN;
+pub const POLLPRI: ::c_short = ZSOCK_POLLPRI;
+pub const POLLHUP: ::c_short = ZSOCK_POLLHUP;
+pub const POLLERR: ::c_short = ZSOCK_POLLERR;
+pub const POLLOUT: ::c_short = ZSOCK_POLLOUT;
+pub const POLLNVAL: ::c_short = ZSOCK_POLLNVAL;
+
+pub const _SC_PAGESIZE: ::c_int = 8;
+pub const _SC_GETPW_R_SIZE_MAX: ::c_int = 51;
+
+pub const SIGHUP: ::c_int = 1; /* hangup */
+pub const SIGINT: ::c_int = 2; /* interrupt */
+pub const SIGQUIT: ::c_int = 3; /* quit */
+pub const SIGILL: ::c_int = 4; /* illegal instruction (not reset when caught) */
+pub const SIGTRAP: ::c_int = 5; /* trace trap (not reset when caught) */
+pub const SIGIOT: ::c_int = 6; /* IOT instruction */
+pub const SIGABRT: ::c_int = 6; /* used by abort, replace SIGIOT in the future */
+pub const SIGEMT: ::c_int = 7; /* EMT instruction */
+pub const SIGFPE: ::c_int = 8; /* floating point exception */
+pub const SIGKILL: ::c_int = 9; /* kill (cannot be caught or ignored) */
+pub const SIGBUS: ::c_int = 10; /* bus error */
+pub const SIGSEGV: ::c_int = 11; /* segmentation violation */
+pub const SIGSYS: ::c_int = 12; /* bad argument to system call */
+pub const SIGPIPE: ::c_int = 13; /* write on a pipe with no one to read it */
+pub const SIGALRM: ::c_int = 14; /* alarm clock */
+pub const SIGTERM: ::c_int = 15; /* software termination signal from kill */
+pub const SOL_SOCKET: ::c_int = 0xfff;
+
+pub const ZSOCK_MSG_PEEK: ::c_long = 0x02;
+pub const ZSOCK_MSG_TRUNC: ::c_long = 0x20;
+pub const ZSOCK_MSG_DONTWAIT: ::c_long = 0x40;
+pub const ZSOCK_MSG_WAITALL: ::c_long = 0x100;
+
+pub const MSG_PEEK: ::c_long = ZSOCK_MSG_PEEK;
+pub const MSG_TRUNC: ::c_long = ZSOCK_MSG_TRUNC;
+pub const MSG_DONTWAIT: ::c_long = ZSOCK_MSG_DONTWAIT;
+pub const MSG_WAITALL: ::c_long = ZSOCK_MSG_WAITALL;
+
+pub const DNS_EAI_BADFLAGS: ::c_int = -1;
+pub const DNS_EAI_NONAME: ::c_int = -2;
+pub const DNS_EAI_AGAIN: ::c_int = -3;
+pub const DNS_EAI_FAIL: ::c_int = -4;
+pub const DNS_EAI_NODATA: ::c_int = -5;
+pub const DNS_EAI_FAMILY: ::c_int = -6;
+pub const DNS_EAI_SOCKTYPE: ::c_int = -7;
+pub const DNS_EAI_SERVICE: ::c_int = -8;
+pub const DNS_EAI_ADDRFAMILY: ::c_int = -9;
+pub const DNS_EAI_MEMORY: ::c_int = -10;
+pub const DNS_EAI_SYSTEM: ::c_int = -11;
+pub const DNS_EAI_OVERFLOW: ::c_int = -12;
+pub const DNS_EAI_INPROGRESS: ::c_int = -100;
+pub const DNS_EAI_CANCELED: ::c_int = -101;
+pub const DNS_EAI_NOTCANCELED: ::c_int = -102;
+pub const DNS_EAI_ALLDONE: ::c_int = -103;
+pub const DNS_EAI_IDN_ENCODE: ::c_int = -105;
+
+/** POSIX wrapper for @ref DNS_EAI_BADFLAGS */
+pub const EAI_BADFLAGS: ::c_int = DNS_EAI_BADFLAGS;
+/** POSIX wrapper for @ref DNS_EAI_NONAME */
+pub const EAI_NONAME: ::c_int = DNS_EAI_NONAME;
+/** POSIX wrapper for @ref DNS_EAI_AGAIN */
+pub const EAI_AGAIN: ::c_int = DNS_EAI_AGAIN;
+/** POSIX wrapper for @ref DNS_EAI_FAIL */
+pub const EAI_FAIL: ::c_int = DNS_EAI_FAIL;
+/** POSIX wrapper for @ref DNS_EAI_NODATA */
+pub const EAI_NODATA: ::c_int = DNS_EAI_NODATA;
+/** POSIX wrapper for @ref DNS_EAI_MEMORY */
+pub const EAI_MEMORY: ::c_int = DNS_EAI_MEMORY;
+/** POSIX wrapper for @ref DNS_EAI_SYSTEM */
+pub const EAI_SYSTEM: ::c_int = DNS_EAI_SYSTEM;
+/** POSIX wrapper for @ref DNS_EAI_SERVICE */
+pub const EAI_SERVICE: ::c_int = DNS_EAI_SERVICE;
+/** POSIX wrapper for @ref DNS_EAI_SOCKTYPE */
+pub const EAI_SOCKTYPE: ::c_int = DNS_EAI_SOCKTYPE;
+/** POSIX wrapper for @ref DNS_EAI_FAMILY */
+pub const EAI_FAMILY: ::c_int = DNS_EAI_FAMILY;
+
+pub const PTHREAD_STACK_MIN: ::size_t = 768;
+
+pub const RTLD_DEFAULT: *mut ::c_void = 0 as *mut ::c_void;
+
+extern "C" {
+    pub fn pthread_create(
+        native: *mut ::pthread_t,
+        attr: *const ::pthread_attr_t,
+        f: extern "C" fn(_: *mut ::c_void) -> *mut ::c_void,
+        value: *mut ::c_void,
+    ) -> ::c_int;
+
+    // pub fn getrandom(buf: *mut ::c_void, buflen: ::size_t, flags: ::c_uint) -> ::ssize_t;
+    //
+    // #[link_name = "lwip_sendmsg"]
+    // pub fn sendmsg(s: ::c_int, msg: *const ::msghdr, flags: ::c_int) -> ::ssize_t;
+    // #[link_name = "lwip_recvmsg"]
+    // pub fn recvmsg(s: ::c_int, msg: *mut ::msghdr, flags: ::c_int) -> ::ssize_t;
+    //
+    // pub fn eventfd(initval: ::c_uint, flags: ::c_int) -> ::c_int;
+}
+
+pub use crate::unix::newlib::generic::{sigset_t, stat};
+use size_t;