qurt: Add support for Qualcomm QuRT

The QuRT RTOS -- used primarily on the Hexagon architecture --
has support for large parts of POSIX.

Author: androm3da

build.rs

@@ -38,7 +38,7 @@ const CHECK_CFG_EXTRA: &[(&str, &[&str])] = &[
     (
         "target_os",
         &[
-            "switch", "aix", "ohos", "hurd", "rtems", "visionos", "nuttx", "cygwin",
+            "switch", "aix", "ohos", "hurd", "rtems", "visionos", "nuttx", "cygwin", "qurt",
         ],
     ),
     (

src/lib.rs

@@ -77,6 +77,14 @@ cfg_if! {
         mod vxworks;
         pub use crate::vxworks::*;
 
+        prelude!();
+    } else if #[cfg(target_os = "qurt")] {
+        mod primitives;
+        pub use crate::primitives::*;
+
+        mod qurt;
+        pub use crate::qurt::*;
+
         prelude!();
     } else if #[cfg(target_os = "solid_asp3")] {
         mod primitives;

src/new/common/posix/mod.rs

@@ -8,6 +8,7 @@
     target_os = "emscripten",
     target_os = "l4re",
     target_os = "linux",
+    target_os = "qurt",
     target_vendor = "apple",
 ))]
 pub(crate) mod pthread;

src/new/mod.rs

@@ -102,6 +102,9 @@ cfg_if! {
     } else if #[cfg(target_os = "openbsd")] {
         mod openbsd;
         pub(crate) use openbsd::*;
+    } else if #[cfg(target_os = "qurt")] {
+        mod qurt;
+        pub(crate) use qurt::*;
     } else if #[cfg(target_os = "redox")] {
         mod redox;
         // pub(crate) use redox::*;
@@ -210,7 +213,7 @@ cfg_if! {
 
 // Per-family headers we export
 cfg_if! {
-    if #[cfg(target_family = "unix")] {
+    if #[cfg(all(target_family = "unix", not(target_os = "qurt")))] {
         // FIXME(pthread): eventually all platforms should use this module
         #[cfg(any(
             target_os = "android",

src/new/qurt/errno.rs

@@ -0,0 +1,154 @@
+//! Header: `errno.h`
+
+use super::*;
+use crate::prelude::*;
+
+// Standard error codes - verified to match QuRT SDK
+pub const EPERM: c_int = 1;
+pub const ENOENT: c_int = 2;
+pub const ESRCH: c_int = 3;
+pub const EINTR: c_int = 4;
+pub const EIO: c_int = 5;
+pub const ENXIO: c_int = 6;
+pub const E2BIG: c_int = 7;
+pub const ENOEXEC: c_int = 8;
+pub const EBADF: c_int = 9;
+pub const ECHILD: c_int = 10;
+pub const EAGAIN: c_int = 11;
+pub const ENOMEM: c_int = 12;
+pub const EACCES: c_int = 13;
+pub const EFAULT: c_int = 14;
+pub const ENOTBLK: c_int = 15;
+pub const EBUSY: c_int = 16;
+pub const EEXIST: c_int = 17;
+pub const EXDEV: c_int = 18;
+pub const ENODEV: c_int = 19;
+pub const ENOTDIR: c_int = 20;
+pub const EISDIR: c_int = 21;
+pub const EINVAL: c_int = 22;
+pub const ENFILE: c_int = 23;
+pub const EMFILE: c_int = 24;
+pub const ENOTTY: c_int = 25;
+pub const ETXTBSY: c_int = 26;
+pub const EFBIG: c_int = 27;
+pub const ENOSPC: c_int = 28;
+pub const ESPIPE: c_int = 29;
+pub const EROFS: c_int = 30;
+pub const EMLINK: c_int = 31;
+pub const EPIPE: c_int = 32;
+pub const EDOM: c_int = 33;
+pub const ERANGE: c_int = 34;
+pub const EDEADLK: c_int = 35;
+pub const ENAMETOOLONG: c_int = 36;
+pub const ENOLCK: c_int = 37;
+pub const ENOSYS: c_int = 38;
+pub const ENOTEMPTY: c_int = 39;
+pub const ELOOP: c_int = 40;
+pub const EWOULDBLOCK: c_int = EAGAIN;
+pub const ENOMSG: c_int = 42;
+pub const EIDRM: c_int = 43;
+pub const ECHRNG: c_int = 44;
+pub const EL2NSYNC: c_int = 45;
+pub const EL3HLT: c_int = 46;
+pub const EL3RST: c_int = 47;
+pub const ELNRNG: c_int = 48;
+pub const EUNATCH: c_int = 49;
+pub const ENOCSI: c_int = 50;
+pub const EL2HLT: c_int = 51;
+pub const EBADE: c_int = 52;
+pub const EBADR: c_int = 53;
+pub const EXFULL: c_int = 54;
+pub const ENOANO: c_int = 55;
+pub const EBADRQC: c_int = 56;
+pub const EBADSLT: c_int = 57;
+pub const EDEADLOCK: c_int = EDEADLK;
+pub const EBFONT: c_int = 59;
+pub const ENOSTR: c_int = 60;
+pub const ENODATA: c_int = 61;
+pub const ETIME: c_int = 62;
+pub const ENOSR: c_int = 63;
+pub const ENONET: c_int = 64;
+pub const ENOPKG: c_int = 65;
+pub const EREMOTE: c_int = 66;
+pub const ENOLINK: c_int = 67;
+pub const EADV: c_int = 68;
+pub const ESRMNT: c_int = 69;
+pub const ECOMM: c_int = 70;
+pub const EPROTO: c_int = 71;
+pub const EMULTIHOP: c_int = 72;
+pub const EDOTDOT: c_int = 73;
+pub const EBADMSG: c_int = 74;
+pub const EOVERFLOW: c_int = 75;
+pub const ENOTUNIQ: c_int = 76;
+pub const EBADFD: c_int = 77;
+pub const EREMCHG: c_int = 78;
+pub const ELIBACC: c_int = 79;
+pub const ELIBBAD: c_int = 80;
+pub const ELIBSCN: c_int = 81;
+pub const ELIBMAX: c_int = 82;
+pub const ELIBEXEC: c_int = 83;
+pub const EILSEQ: c_int = 84;
+pub const ERESTART: c_int = 85;
+pub const ESTRPIPE: c_int = 86;
+pub const EUSERS: c_int = 87;
+pub const ENOTSOCK: c_int = 88;
+pub const EDESTADDRREQ: c_int = 89;
+pub const EMSGSIZE: c_int = 90;
+pub const EPROTOTYPE: c_int = 91;
+pub const ENOPROTOOPT: c_int = 92;
+pub const EPROTONOSUPPORT: c_int = 93;
+pub const ESOCKTNOSUPPORT: c_int = 94;
+pub const EOPNOTSUPP: c_int = 95;
+pub const ENOTSUP: c_int = EOPNOTSUPP;
+pub const EPFNOSUPPORT: c_int = 96;
+pub const EAFNOSUPPORT: c_int = 97;
+pub const EADDRINUSE: c_int = 98;
+pub const EADDRNOTAVAIL: c_int = 99;
+pub const ENETDOWN: c_int = 100;
+pub const ENETUNREACH: c_int = 101;
+pub const ENETRESET: c_int = 102;
+pub const ECONNABORTED: c_int = 103;
+pub const ECONNRESET: c_int = 104;
+pub const ENOBUFS: c_int = 105;
+pub const EISCONN: c_int = 106;
+pub const ENOTCONN: c_int = 107;
+pub const ESHUTDOWN: c_int = 108;
+pub const ETOOMANYREFS: c_int = 109;
+pub const ETIMEDOUT: c_int = 110;
+pub const ECONNREFUSED: c_int = 111;
+pub const EHOSTDOWN: c_int = 112;
+pub const EHOSTUNREACH: c_int = 113;
+pub const EALREADY: c_int = 114;
+pub const EINPROGRESS: c_int = 115;
+pub const ESTALE: c_int = 116;
+pub const EUCLEAN: c_int = 117;
+pub const ENOTNAM: c_int = 118;
+pub const ENAVAIL: c_int = 119;
+pub const EISNAM: c_int = 120;
+pub const EREMOTEIO: c_int = 121;
+pub const EDQUOT: c_int = 122;
+pub const ENOMEDIUM: c_int = 123;
+pub const EMEDIUMTYPE: c_int = 124;
+pub const ECANCELED: c_int = 125;
+pub const ENOKEY: c_int = 126;
+pub const EKEYEXPIRED: c_int = 127;
+pub const EKEYREVOKED: c_int = 128;
+pub const EKEYREJECTED: c_int = 129;
+pub const EOWNERDEAD: c_int = 130;
+pub const ENOTRECOVERABLE: c_int = 131;
+pub const ERFKILL: c_int = 132;
+pub const EHWPOISON: c_int = 133;
+
+extern "C" {
+    // Error number access
+    #[link_name = "__errno_location"]
+    pub fn __errno_location() -> *mut c_int;
+}
+
+pub unsafe fn errno() -> c_int {
+    *__errno_location()
+}
+
+pub unsafe fn set_errno(value: c_int) {
+    *__errno_location() = value;
+}

src/new/qurt/fcntl.rs

@@ -0,0 +1,49 @@
+//! Header: `fcntl.h`
+
+use super::*;
+use crate::prelude::*;
+
+// File access modes
+pub const O_RDONLY: c_int = 0x0000;
+pub const O_WRONLY: c_int = 0x0001;
+pub const O_RDWR: c_int = 0x0002;
+pub const O_ACCMODE: c_int = 0x0003;
+
+// File creation flags
+pub const O_CREAT: c_int = 0x0040;
+pub const O_EXCL: c_int = 0x0080;
+pub const O_NOCTTY: c_int = 0x0100;
+pub const O_TRUNC: c_int = 0x0200;
+
+// File status flags
+pub const O_APPEND: c_int = 0x0400;
+pub const O_NONBLOCK: c_int = 0x0800;
+pub const O_SYNC: c_int = 0x1000;
+pub const O_FSYNC: c_int = O_SYNC;
+pub const O_DSYNC: c_int = 0x1000;
+
+// fcntl() commands
+pub const F_DUPFD: c_int = 0;
+pub const F_GETFD: c_int = 1;
+pub const F_SETFD: c_int = 2;
+pub const F_GETFL: c_int = 3;
+pub const F_SETFL: c_int = 4;
+pub const F_GETLK: c_int = 5;
+pub const F_SETLK: c_int = 6;
+pub const F_SETLKW: c_int = 7;
+
+// File descriptor flags
+pub const FD_CLOEXEC: c_int = 1;
+
+// Lock types for fcntl()
+pub const F_RDLCK: c_int = 0;
+pub const F_WRLCK: c_int = 1;
+pub const F_UNLCK: c_int = 2;
+
+// Functions
+extern "C" {
+    pub fn open(pathname: *const c_char, flags: c_int, ...) -> c_int;
+    pub fn openat(dirfd: c_int, pathname: *const c_char, flags: c_int, ...) -> c_int;
+    pub fn creat(pathname: *const c_char, mode: mode_t) -> c_int;
+    pub fn fcntl(fd: c_int, cmd: c_int, ...) -> c_int;
+}

src/new/qurt/limits.rs

@@ -0,0 +1,41 @@
+//! Header: `limits.h`
+
+use super::*;
+use crate::prelude::*;
+
+// Character properties
+pub const CHAR_BIT: c_uint = 8;
+pub const CHAR_MAX: c_char = 255; // unsigned char on Hexagon
+pub const CHAR_MIN: c_char = 0;
+pub const SCHAR_MAX: c_schar = 127;
+pub const SCHAR_MIN: c_schar = -128;
+pub const UCHAR_MAX: c_uchar = 255;
+
+// Integer properties
+pub const INT_MAX: c_int = 2147483647;
+pub const INT_MIN: c_int = (-2147483647 - 1);
+pub const UINT_MAX: c_uint = 4294967295;
+
+pub const LONG_MAX: c_long = 2147483647;
+pub const LONG_MIN: c_long = (-2147483647 - 1);
+pub const ULONG_MAX: c_ulong = 4294967295;
+
+pub const SHRT_MAX: c_short = 32767;
+pub const SHRT_MIN: c_short = (-32768);
+pub const USHRT_MAX: c_ushort = 65535;
+
+// POSIX Limits
+pub const ARG_MAX: c_int = 4096;
+pub const CHILD_MAX: c_int = 25;
+pub const LINK_MAX: c_int = 8;
+pub const MAX_CANON: c_int = 255;
+pub const MAX_INPUT: c_int = 255;
+pub const NAME_MAX: c_int = 255;
+pub const OPEN_MAX: c_int = 20;
+pub const PATH_MAX: c_int = 260;
+pub const PIPE_BUF: c_int = 512;
+pub const STREAM_MAX: c_int = 20;
+pub const TZNAME_MAX: c_int = 50;
+
+// Additional limits
+pub const IOV_MAX: c_int = 16;