Auto merge of #21959 - dhuseby:bitrig-support, r=brson

This patch adds the necessary pieces to support rust on Bitrig https://bitrig.org

13 files changed, 150 insertions, 22 deletions

diff --git a/src/libstd/sys/common/net.rs b/src/libstd/sys/common/net.rs
index e2ac5ac24f8..b5cd42219e1 100644
--- a/src/libstd/sys/common/net.rs
+++ b/src/libstd/sys/common/net.rs
@@ -694,7 +694,8 @@ impl TcpStream {
         setsockopt(self.fd(), libc::IPPROTO_TCP, libc::TCP_KEEPALIVE,
                    seconds as libc::c_int)
     }
-    #[cfg(any(target_os = "freebsd", target_os = "dragonfly"))]
+    #[cfg(any(target_os = "freebsd",
+              target_os = "dragonfly"))]
     fn set_tcp_keepalive(&mut self, seconds: uint) -> IoResult<()> {
         setsockopt(self.fd(), libc::IPPROTO_TCP, libc::TCP_KEEPIDLE,
                    seconds as libc::c_int)
diff --git a/src/libstd/sys/common/stack.rs b/src/libstd/sys/common/stack.rs
index 8dd2f154fa8..5ebc851e194 100644
--- a/src/libstd/sys/common/stack.rs
+++ b/src/libstd/sys/common/stack.rs
@@ -189,7 +189,8 @@ pub unsafe fn record_sp_limit(limit: uint) {
     unsafe fn target_record_sp_limit(limit: uint) {
         asm!("movq $0, %fs:24" :: "r"(limit) :: "volatile")
     }
-    #[cfg(all(target_arch = "x86_64", target_os = "dragonfly"))] #[inline(always)]
+    #[cfg(all(target_arch = "x86_64", target_os = "dragonfly"))]
+    #[inline(always)]
     unsafe fn target_record_sp_limit(limit: uint) {
         asm!("movq $0, %fs:32" :: "r"(limit) :: "volatile")
     }
@@ -233,6 +234,7 @@ pub unsafe fn record_sp_limit(limit: uint) {
     #[cfg(any(target_arch = "aarch64",
               target_arch = "powerpc",
               all(target_arch = "arm", target_os = "ios"),
+              target_os = "bitrig",
               target_os = "openbsd"))]
     unsafe fn target_record_sp_limit(_: uint) {
     }
@@ -276,14 +278,14 @@ pub unsafe fn get_sp_limit() -> uint {
         asm!("movq %fs:24, $0" : "=r"(limit) ::: "volatile");
         return limit;
     }
-    #[cfg(all(target_arch = "x86_64", target_os = "dragonfly"))] #[inline(always)]
+    #[cfg(all(target_arch = "x86_64", target_os = "dragonfly"))]
+    #[inline(always)]
     unsafe fn target_get_sp_limit() -> uint {
         let limit;
         asm!("movq %fs:32, $0" : "=r"(limit) ::: "volatile");
         return limit;
     }
 
-
     // x86
     #[cfg(all(target_arch = "x86",
               any(target_os = "macos", target_os = "ios")))]
@@ -331,6 +333,7 @@ pub unsafe fn get_sp_limit() -> uint {
     #[cfg(any(target_arch = "aarch64",
               target_arch = "powerpc",
               all(target_arch = "arm", target_os = "ios"),
+              target_os = "bitrig",
               target_os = "openbsd"))]
     #[inline(always)]
     unsafe fn target_get_sp_limit() -> uint {
diff --git a/src/libstd/sys/unix/backtrace.rs b/src/libstd/sys/unix/backtrace.rs
index 8b560339f30..6f07dea5279 100644
--- a/src/libstd/sys/unix/backtrace.rs
+++ b/src/libstd/sys/unix/backtrace.rs
@@ -319,6 +319,7 @@ fn print(w: &mut Writer, idx: int, addr: *mut libc::c_void) -> IoResult<()> {
         if !STATE.is_null() { return STATE }
         let selfname = if cfg!(target_os = "freebsd") ||
                           cfg!(target_os = "dragonfly") ||
+                          cfg!(target_os = "bitrig") ||
                           cfg!(target_os = "openbsd") {
             env::current_exe().ok()
         } else {
diff --git a/src/libstd/sys/unix/c.rs b/src/libstd/sys/unix/c.rs
index 345808189a0..14394a653b0 100644
--- a/src/libstd/sys/unix/c.rs
+++ b/src/libstd/sys/unix/c.rs
@@ -24,6 +24,7 @@ use libc;
           target_os = "ios",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub const FIONBIO: libc::c_ulong = 0x8004667e;
 #[cfg(any(all(target_os = "linux",
@@ -43,6 +44,7 @@ pub const FIONBIO: libc::c_ulong = 0x667e;
           target_os = "ios",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub const FIOCLEX: libc::c_ulong = 0x20006601;
 #[cfg(any(all(target_os = "linux",
@@ -62,6 +64,7 @@ pub const FIOCLEX: libc::c_ulong = 0x6601;
           target_os = "ios",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub const MSG_DONTWAIT: libc::c_int = 0x80;
 #[cfg(any(target_os = "linux", target_os = "android"))]
@@ -75,7 +78,8 @@ pub const _SC_GETPW_R_SIZE_MAX: libc::c_int = 70;
           target_os = "freebsd",
           target_os = "dragonfly"))]
 pub const _SC_GETPW_R_SIZE_MAX: libc::c_int = 71;
-#[cfg(target_os = "openbsd")]
+#[cfg(any(target_os = "bitrig",
+          target_os = "openbsd"))]
 pub const _SC_GETPW_R_SIZE_MAX: libc::c_int = 101;
 #[cfg(target_os = "android")]
 pub const _SC_GETPW_R_SIZE_MAX: libc::c_int = 0x0048;
@@ -96,6 +100,7 @@ pub struct passwd {
 #[cfg(any(target_os = "macos",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub struct passwd {
     pub pw_name: *mut libc::c_char,
@@ -177,6 +182,7 @@ mod select {
 #[cfg(any(target_os = "android",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd",
           target_os = "linux"))]
 mod select {
@@ -302,8 +308,7 @@ mod signal {
 #[cfg(any(target_os = "macos",
           target_os = "ios",
           target_os = "freebsd",
-          target_os = "dragonfly",
-          target_os = "openbsd"))]
+          target_os = "dragonfly"))]
 mod signal {
     use libc;
 
@@ -317,8 +322,7 @@ mod signal {
     pub const SIGCHLD: libc::c_int = 20;
 
     #[cfg(any(target_os = "macos",
-              target_os = "ios",
-              target_os = "openbsd"))]
+              target_os = "ios"))]
     pub type sigset_t = u32;
     #[cfg(any(target_os = "freebsd", target_os = "dragonfly"))]
     #[repr(C)]
@@ -345,3 +349,41 @@ mod signal {
         pub sa_mask: sigset_t,
     }
 }
+
+#[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
+mod signal {
+    use libc;
+
+    pub const SA_ONSTACK: libc::c_int = 0x0001;
+    pub const SA_RESTART: libc::c_int = 0x0002;
+    pub const SA_RESETHAND: libc::c_int = 0x0004;
+    pub const SA_NOCLDSTOP: libc::c_int = 0x0008;
+    pub const SA_NODEFER: libc::c_int = 0x0010;
+    pub const SA_NOCLDWAIT: libc::c_int = 0x0020;
+    pub const SA_SIGINFO: libc::c_int = 0x0040;
+    pub const SIGCHLD: libc::c_int = 20;
+
+    pub type sigset_t = libc::c_uint;
+
+    // This structure has more fields, but we're not all that interested in
+    // them.
+    #[repr(C)]
+    pub struct siginfo {
+        pub si_signo: libc::c_int,
+        pub si_code: libc::c_int,
+        pub si_errno: libc::c_int,
+        // FIXME: Bitrig has a crazy union here in the siginfo, I think this
+        // layout will still work tho.  The status might be off by the size of
+        // a clock_t by my reading, but we can fix this later.
+        pub pid: libc::pid_t,
+        pub uid: libc::uid_t,
+        pub status: libc::c_int,
+    }
+
+    #[repr(C)]
+    pub struct sigaction {
+        pub sa_handler: extern fn(libc::c_int),
+        pub sa_mask: sigset_t,
+        pub sa_flags: libc::c_int,
+    }
+}
diff --git a/src/libstd/sys/unix/fs.rs b/src/libstd/sys/unix/fs.rs
index 5c847002d23..1c28d629d40 100644
--- a/src/libstd/sys/unix/fs.rs
+++ b/src/libstd/sys/unix/fs.rs
@@ -291,6 +291,33 @@ fn mkstat(stat: &libc::stat) -> FileStat {
     // FileStat times are in milliseconds
     fn mktime(secs: u64, nsecs: u64) -> u64 { secs * 1000 + nsecs / 1000000 }
 
+    #[cfg(target_os = "bitrig")]
+    fn ctime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_ctim.tv_sec as u64, stat.st_ctim.tv_nsec as u64)
+    }
+    #[cfg(not(target_os = "bitrig"))]
+    fn ctime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64)
+    }
+
+    #[cfg(target_os = "bitrig")]
+    fn atime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_atim.tv_sec as u64, stat.st_atim.tv_nsec as u64)
+    }
+    #[cfg(not(target_os = "bitrig"))]
+    fn atime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_atime as u64, stat.st_atime_nsec as u64)
+    }
+
+    #[cfg(target_os = "bitrig")]
+    fn mtime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_mtim.tv_sec as u64, stat.st_mtim.tv_nsec as u64)
+    }
+    #[cfg(not(target_os = "bitrig"))]
+    fn mtime(stat: &libc::stat) -> u64 {
+      mktime(stat.st_mtime as u64, stat.st_mtime_nsec as u64)
+    }
+
     #[cfg(not(any(target_os = "linux", target_os = "android")))]
     fn flags(stat: &libc::stat) -> u64 { stat.st_flags as u64 }
     #[cfg(any(target_os = "linux", target_os = "android"))]
@@ -312,9 +339,9 @@ fn mkstat(stat: &libc::stat) -> FileStat {
             _ => old_io::FileType::Unknown,
         },
         perm: FilePermission::from_bits_truncate(stat.st_mode as u32),
-        created: mktime(stat.st_ctime as u64, stat.st_ctime_nsec as u64),
-        modified: mktime(stat.st_mtime as u64, stat.st_mtime_nsec as u64),
-        accessed: mktime(stat.st_atime as u64, stat.st_atime_nsec as u64),
+        created: ctime(stat),
+        modified: mtime(stat),
+        accessed: atime(stat),
         unstable: UnstableFileStat {
             device: stat.st_dev as u64,
             inode: stat.st_ino as u64,
diff --git a/src/libstd/sys/unix/os.rs b/src/libstd/sys/unix/os.rs
index 3d1ef3a2c37..1f82d9a3d79 100644
--- a/src/libstd/sys/unix/os.rs
+++ b/src/libstd/sys/unix/os.rs
@@ -42,6 +42,16 @@ pub fn errno() -> i32 {
         __error()
     }
 
+    #[cfg(target_os = "bitrig")]
+    fn errno_location() -> *const c_int {
+        extern {
+            fn __errno() -> *const c_int;
+        }
+        unsafe {
+            __errno()
+        }
+    }
+
     #[cfg(target_os = "dragonfly")]
     unsafe fn errno_location() -> *const c_int {
         extern { fn __dfly_error() -> *const c_int; }
@@ -194,10 +204,9 @@ pub fn current_exe() -> IoResult<Path> {
     fs::readlink(&Path::new("/proc/curproc/file"))
 }
 
-#[cfg(target_os = "openbsd")]
+#[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
 pub fn current_exe() -> IoResult<Path> {
     use sync::{StaticMutex, MUTEX_INIT};
-
     static LOCK: StaticMutex = MUTEX_INIT;
 
     extern {
@@ -336,6 +345,7 @@ pub fn args() -> Args {
           target_os = "android",
           target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub fn args() -> Args {
     use rt;
diff --git a/src/libstd/sys/unix/process.rs b/src/libstd/sys/unix/process.rs
index b30ac889120..582fff2a26b 100644
--- a/src/libstd/sys/unix/process.rs
+++ b/src/libstd/sys/unix/process.rs
@@ -856,6 +856,7 @@ fn translate_status(status: c_int) -> ProcessExit {
               target_os = "ios",
               target_os = "freebsd",
               target_os = "dragonfly",
+              target_os = "bitrig",
               target_os = "openbsd"))]
     mod imp {
         pub fn WIFEXITED(status: i32) -> bool { (status & 0x7f) == 0 }
diff --git a/src/libstd/sys/unix/stack_overflow.rs b/src/libstd/sys/unix/stack_overflow.rs
index 3512fa36eb3..c2044c502b7 100644
--- a/src/libstd/sys/unix/stack_overflow.rs
+++ b/src/libstd/sys/unix/stack_overflow.rs
@@ -34,6 +34,7 @@ impl Drop for Handler {
 
 #[cfg(any(target_os = "linux",
           target_os = "macos",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 mod imp {
     use core::prelude::*;
@@ -205,7 +206,9 @@ mod imp {
 
     }
 
-    #[cfg(any(target_os = "macos", target_os = "openbsd"))]
+    #[cfg(any(target_os = "macos",
+              target_os = "bitrig",
+              target_os = "openbsd"))]
     mod signal {
         use libc;
         use super::sighandler_t;
@@ -216,7 +219,7 @@ mod imp {
 
         #[cfg(target_os = "macos")]
         pub const SIGSTKSZ: libc::size_t = 131072;
-        #[cfg(target_os = "openbsd")]
+        #[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
         pub const SIGSTKSZ: libc::size_t = 40960;
 
         pub const SIG_DFL: sighandler_t = 0 as sighandler_t;
@@ -237,14 +240,14 @@ mod imp {
             pub si_addr: *mut libc::c_void
         }
 
-        #[cfg(target_os = "openbsd")]
+        #[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
         #[repr(C)]
         pub struct siginfo {
             pub si_signo: libc::c_int,
             pub si_code: libc::c_int,
             pub si_errno: libc::c_int,
-            // union
-            pub si_addr: *mut libc::c_void,
+            //union
+            pub si_addr: *mut libc::c_void
         }
 
         #[repr(C)]
@@ -277,6 +280,7 @@ mod imp {
 
 #[cfg(not(any(target_os = "linux",
               target_os = "macos",
+              target_os = "bitrig",
               target_os = "openbsd")))]
 mod imp {
     use libc;
diff --git a/src/libstd/sys/unix/sync.rs b/src/libstd/sys/unix/sync.rs
index bc93513af63..c7d704922cb 100644
--- a/src/libstd/sys/unix/sync.rs
+++ b/src/libstd/sys/unix/sync.rs
@@ -46,6 +46,7 @@ extern {
 
 #[cfg(any(target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 mod os {
     use libc;
diff --git a/src/libstd/sys/unix/thread.rs b/src/libstd/sys/unix/thread.rs
index c90ba7645fe..c42d6d0e641 100644
--- a/src/libstd/sys/unix/thread.rs
+++ b/src/libstd/sys/unix/thread.rs
@@ -34,6 +34,7 @@ pub extern fn thread_start(main: *mut libc::c_void) -> rust_thread_return {
 
 #[cfg(all(not(target_os = "linux"),
           not(target_os = "macos"),
+          not(target_os = "bitrig"),
           not(target_os = "openbsd")))]
 pub mod guard {
     pub unsafe fn current() -> uint {
@@ -51,11 +52,13 @@ pub mod guard {
 
 #[cfg(any(target_os = "linux",
           target_os = "macos",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub mod guard {
     use super::*;
     #[cfg(any(target_os = "linux",
               target_os = "android",
+              target_os = "bitrig",
               target_os = "openbsd"))]
     use mem;
     #[cfg(any(target_os = "linux", target_os = "android"))]
@@ -72,7 +75,9 @@ pub mod guard {
     static mut PAGE_SIZE: uint = 0;
     static mut GUARD_PAGE: uint = 0;
 
-    #[cfg(any(target_os = "macos", target_os = "openbsd"))]
+    #[cfg(any(target_os = "macos",
+              target_os = "bitrig",
+              target_os = "openbsd"))]
     unsafe fn get_stack_start() -> *mut libc::c_void {
         current() as *mut libc::c_void
     }
@@ -190,6 +195,22 @@ pub mod guard {
 
         stackaddr as uint + guardsize as uint
     }
+
+    #[cfg(target_os = "bitrig")]
+    pub unsafe fn current() -> uint {
+      let mut current_stack: stack_t = mem::zeroed();
+      if pthread_stackseg_np(pthread_self(), &mut current_stack) != 0 {
+        panic!("failed to get current stack: pthread_stackseg_np")
+      }
+
+      if pthread_main_np() == 1 {
+        // main thread
+        current_stack.ss_sp as uint - current_stack.ss_size as uint + 3 * PAGE_SIZE as uint
+      } else {
+        // new thread
+        current_stack.ss_sp as uint - current_stack.ss_size as uint
+      }
+    }
 }
 
 pub unsafe fn create(stack: uint, p: Thunk) -> io::Result<rust_thread> {
@@ -252,6 +273,7 @@ pub unsafe fn set_name(name: &str) {
 
 #[cfg(any(target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 pub unsafe fn set_name(name: &str) {
     // pthread_set_name_np() since almost forever on all BSDs
@@ -334,6 +356,15 @@ extern {
     fn pthread_setname_np(name: *const libc::c_char) -> libc::c_int;
 }
 
+#[cfg(target_os = "bitrig")]
+extern {
+    pub fn pthread_self() -> libc::pthread_t;
+    pub fn pthread_stackseg_np(thread: libc::pthread_t,
+                              sinfo: *mut stack_t) -> libc::c_uint;
+    pub fn pthread_main_np() -> libc::c_uint;
+    fn pthread_set_name_np(tid: libc::pthread_t, name: *const libc::c_char);
+}
+
 #[cfg(target_os = "openbsd")]
 extern {
         pub fn pthread_stackseg_np(thread: libc::pthread_t,
@@ -341,7 +372,7 @@ extern {
         pub fn pthread_main_np() -> libc::c_uint;
 }
 
-#[cfg(target_os = "openbsd")]
+#[cfg(any(target_os = "bitrig", target_os = "openbsd"))]
 #[repr(C)]
 pub struct stack_t {
     pub ss_sp: *mut libc::c_void,
diff --git a/src/libstd/sys/unix/thread_local.rs b/src/libstd/sys/unix/thread_local.rs
index 62d9a33c83d..9b7079ee108 100644
--- a/src/libstd/sys/unix/thread_local.rs
+++ b/src/libstd/sys/unix/thread_local.rs
@@ -43,6 +43,7 @@ type pthread_key_t = ::libc::c_ulong;
 
 #[cfg(any(target_os = "freebsd",
           target_os = "dragonfly",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 type pthread_key_t = ::libc::c_int;
 
@@ -50,6 +51,7 @@ type pthread_key_t = ::libc::c_int;
               target_os = "ios",
               target_os = "freebsd",
               target_os = "dragonfly",
+              target_os = "bitrig",
               target_os = "openbsd")))]
 type pthread_key_t = ::libc::c_uint;
 
diff --git a/src/libstd/sys/unix/time.rs b/src/libstd/sys/unix/time.rs
index bddf7b075df..1104bc995c6 100644
--- a/src/libstd/sys/unix/time.rs
+++ b/src/libstd/sys/unix/time.rs
@@ -80,8 +80,11 @@ mod inner {
     }
 
     // Apparently android provides this in some other library?
+    // Bitrig's RT extensions are in the C library, not a separate librt
     // OpenBSD provide it via libc
-    #[cfg(not(any(target_os = "android", target_os = "openbsd")))]
+    #[cfg(not(any(target_os = "android",
+                  target_os = "bitrig",
+                  target_os = "openbsd")))]
     #[link(name = "rt")]
     extern {}
 
diff --git a/src/libstd/sys/unix/tty.rs b/src/libstd/sys/unix/tty.rs
index 3a79047445c..8e60bbf4cbd 100644
--- a/src/libstd/sys/unix/tty.rs
+++ b/src/libstd/sys/unix/tty.rs
@@ -22,6 +22,7 @@ pub struct TTY {
 
 #[cfg(any(target_os = "macos",
           target_os = "freebsd",
+          target_os = "bitrig",
           target_os = "openbsd"))]
 const TIOCGWINSZ: c_ulong = 0x40087468;
 
@@ -55,6 +56,7 @@ impl TTY {
               target_os = "android",
               target_os = "macos",
               target_os = "freebsd",
+              target_os = "bitrig",
               target_os = "openbsd"))]
     pub fn get_winsize(&mut self) -> IoResult<(int, int)> {
         unsafe {