Add 32/64-bit MIPS R6 as separate target architectures (#73)

* gen: add 32/64 MIPS Release 6 as separate target arch

- This is a part of the MCP rust-lang/compiler-team#632, that MIPS
  release 6 being migrated as target_arch instead of target features of
  MIPS.

* Introduce generated bindings for mipsr6 targets

gen/src/main.rs

@@ -289,7 +289,7 @@ fn rust_arches(linux_arch: &str) -> &[&str] {
         // hexagon gets build errors; disable it for now
         "hexagon" => &[],
         "loongarch" => &["loongarch64"],
-        "mips" => &["mips", "mips64"],
+        "mips" => &["mips", "mips64", "mips32r6", "mips64r6"],
         "powerpc" => &["powerpc", "powerpc64"],
         "riscv" => &["riscv32", "riscv64"],
         "s390" => &["s390x"],
@@ -384,6 +384,10 @@ fn compute_clang_target(rust_arch: &str) -> String {
         format!("i686-unknown-linux")
     } else if rust_arch == "x32" {
         format!("x86_64-unknown-linux-gnux32")
+    } else if rust_arch == "mips32r6" {
+        format!("mipsisa32r6-unknown-linux-gnu")
+    } else if rust_arch == "mips64r6" {
+        format!("mipsisa64r6-unknown-linux-gnuabi64")
     } else {
         format!("{}-unknown-linux", rust_arch)
     }

src/lib.rs

@@ -368,6 +368,78 @@ pub mod prctl;
 #[path = "mips64/system.rs"]
 pub mod system;
 #[cfg(feature = "errno")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/errno.rs"]
+pub mod errno;
+#[cfg(feature = "general")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/general.rs"]
+pub mod general;
+#[cfg(feature = "if_ether")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/if_ether.rs"]
+pub mod if_ether;
+#[cfg(feature = "io_uring")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/io_uring.rs"]
+pub mod io_uring;
+#[cfg(feature = "ioctl")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/ioctl.rs"]
+pub mod ioctl;
+#[cfg(feature = "net")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/net.rs"]
+pub mod net;
+#[cfg(feature = "netlink")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/netlink.rs"]
+pub mod netlink;
+#[cfg(feature = "prctl")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/prctl.rs"]
+pub mod prctl;
+#[cfg(feature = "system")]
+#[cfg(target_arch = "mips32r6")]
+#[path = "mips32r6/system.rs"]
+pub mod system;
+#[cfg(feature = "errno")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/errno.rs"]
+pub mod errno;
+#[cfg(feature = "general")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/general.rs"]
+pub mod general;
+#[cfg(feature = "if_ether")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/if_ether.rs"]
+pub mod if_ether;
+#[cfg(feature = "io_uring")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/io_uring.rs"]
+pub mod io_uring;
+#[cfg(feature = "ioctl")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/ioctl.rs"]
+pub mod ioctl;
+#[cfg(feature = "net")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/net.rs"]
+pub mod net;
+#[cfg(feature = "netlink")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/netlink.rs"]
+pub mod netlink;
+#[cfg(feature = "prctl")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/prctl.rs"]
+pub mod prctl;
+#[cfg(feature = "system")]
+#[cfg(target_arch = "mips64r6")]
+#[path = "mips64r6/system.rs"]
+pub mod system;
+#[cfg(feature = "errno")]
 #[cfg(target_arch = "powerpc")]
 #[path = "powerpc/errno.rs"]
 pub mod errno;

src/mips32r6/errno.rs

@@ -0,0 +1,137 @@
+/* automatically generated by rust-bindgen 0.66.1 */
+
+pub const EPERM: u32 = 1;
+pub const ENOENT: u32 = 2;
+pub const ESRCH: u32 = 3;
+pub const EINTR: u32 = 4;
+pub const EIO: u32 = 5;
+pub const ENXIO: u32 = 6;
+pub const E2BIG: u32 = 7;
+pub const ENOEXEC: u32 = 8;
+pub const EBADF: u32 = 9;
+pub const ECHILD: u32 = 10;
+pub const EAGAIN: u32 = 11;
+pub const ENOMEM: u32 = 12;
+pub const EACCES: u32 = 13;
+pub const EFAULT: u32 = 14;
+pub const ENOTBLK: u32 = 15;
+pub const EBUSY: u32 = 16;
+pub const EEXIST: u32 = 17;
+pub const EXDEV: u32 = 18;
+pub const ENODEV: u32 = 19;
+pub const ENOTDIR: u32 = 20;
+pub const EISDIR: u32 = 21;
+pub const EINVAL: u32 = 22;
+pub const ENFILE: u32 = 23;
+pub const EMFILE: u32 = 24;
+pub const ENOTTY: u32 = 25;
+pub const ETXTBSY: u32 = 26;
+pub const EFBIG: u32 = 27;
+pub const ENOSPC: u32 = 28;
+pub const ESPIPE: u32 = 29;
+pub const EROFS: u32 = 30;
+pub const EMLINK: u32 = 31;
+pub const EPIPE: u32 = 32;
+pub const EDOM: u32 = 33;
+pub const ERANGE: u32 = 34;
+pub const ENOMSG: u32 = 35;
+pub const EIDRM: u32 = 36;
+pub const ECHRNG: u32 = 37;
+pub const EL2NSYNC: u32 = 38;
+pub const EL3HLT: u32 = 39;
+pub const EL3RST: u32 = 40;
+pub const ELNRNG: u32 = 41;
+pub const EUNATCH: u32 = 42;
+pub const ENOCSI: u32 = 43;
+pub const EL2HLT: u32 = 44;
+pub const EDEADLK: u32 = 45;
+pub const ENOLCK: u32 = 46;
+pub const EBADE: u32 = 50;
+pub const EBADR: u32 = 51;
+pub const EXFULL: u32 = 52;
+pub const ENOANO: u32 = 53;
+pub const EBADRQC: u32 = 54;
+pub const EBADSLT: u32 = 55;
+pub const EDEADLOCK: u32 = 56;
+pub const EBFONT: u32 = 59;
+pub const ENOSTR: u32 = 60;
+pub const ENODATA: u32 = 61;
+pub const ETIME: u32 = 62;
+pub const ENOSR: u32 = 63;
+pub const ENONET: u32 = 64;
+pub const ENOPKG: u32 = 65;
+pub const EREMOTE: u32 = 66;
+pub const ENOLINK: u32 = 67;
+pub const EADV: u32 = 68;
+pub const ESRMNT: u32 = 69;
+pub const ECOMM: u32 = 70;
+pub const EPROTO: u32 = 71;
+pub const EDOTDOT: u32 = 73;
+pub const EMULTIHOP: u32 = 74;
+pub const EBADMSG: u32 = 77;
+pub const ENAMETOOLONG: u32 = 78;
+pub const EOVERFLOW: u32 = 79;
+pub const ENOTUNIQ: u32 = 80;
+pub const EBADFD: u32 = 81;
+pub const EREMCHG: u32 = 82;
+pub const ELIBACC: u32 = 83;
+pub const ELIBBAD: u32 = 84;
+pub const ELIBSCN: u32 = 85;
+pub const ELIBMAX: u32 = 86;
+pub const ELIBEXEC: u32 = 87;
+pub const EILSEQ: u32 = 88;
+pub const ENOSYS: u32 = 89;
+pub const ELOOP: u32 = 90;
+pub const ERESTART: u32 = 91;
+pub const ESTRPIPE: u32 = 92;
+pub const ENOTEMPTY: u32 = 93;
+pub const EUSERS: u32 = 94;
+pub const ENOTSOCK: u32 = 95;
+pub const EDESTADDRREQ: u32 = 96;
+pub const EMSGSIZE: u32 = 97;
+pub const EPROTOTYPE: u32 = 98;
+pub const ENOPROTOOPT: u32 = 99;
+pub const EPROTONOSUPPORT: u32 = 120;
+pub const ESOCKTNOSUPPORT: u32 = 121;
+pub const EOPNOTSUPP: u32 = 122;
+pub const EPFNOSUPPORT: u32 = 123;
+pub const EAFNOSUPPORT: u32 = 124;
+pub const EADDRINUSE: u32 = 125;
+pub const EADDRNOTAVAIL: u32 = 126;
+pub const ENETDOWN: u32 = 127;
+pub const ENETUNREACH: u32 = 128;
+pub const ENETRESET: u32 = 129;
+pub const ECONNABORTED: u32 = 130;
+pub const ECONNRESET: u32 = 131;
+pub const ENOBUFS: u32 = 132;
+pub const EISCONN: u32 = 133;
+pub const ENOTCONN: u32 = 134;
+pub const EUCLEAN: u32 = 135;
+pub const ENOTNAM: u32 = 137;
+pub const ENAVAIL: u32 = 138;
+pub const EISNAM: u32 = 139;
+pub const EREMOTEIO: u32 = 140;
+pub const EINIT: u32 = 141;
+pub const EREMDEV: u32 = 142;
+pub const ESHUTDOWN: u32 = 143;
+pub const ETOOMANYREFS: u32 = 144;
+pub const ETIMEDOUT: u32 = 145;
+pub const ECONNREFUSED: u32 = 146;
+pub const EHOSTDOWN: u32 = 147;
+pub const EHOSTUNREACH: u32 = 148;
+pub const EWOULDBLOCK: u32 = 11;
+pub const EALREADY: u32 = 149;
+pub const EINPROGRESS: u32 = 150;
+pub const ESTALE: u32 = 151;
+pub const ECANCELED: u32 = 158;
+pub const ENOMEDIUM: u32 = 159;
+pub const EMEDIUMTYPE: u32 = 160;
+pub const ENOKEY: u32 = 161;
+pub const EKEYEXPIRED: u32 = 162;
+pub const EKEYREVOKED: u32 = 163;
+pub const EKEYREJECTED: u32 = 164;
+pub const EOWNERDEAD: u32 = 165;
+pub const ENOTRECOVERABLE: u32 = 166;
+pub const ERFKILL: u32 = 167;
+pub const EHWPOISON: u32 = 168;
+pub const EDQUOT: u32 = 1133;