iOS: updated targets

- target_word_size -> target_pointer_width
- added armv7 and armv7s targets
- enabled building binaries so tests could be run on a jailbroken device

src/librustc_back/target/apple_ios_base.rs

@@ -0,0 +1,88 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use std::io::{Command, IoError, OtherIoError};
+use target::TargetOptions;
+
+use self::Arch::*;
+
+#[allow(non_camel_case_types)]
+pub enum Arch {
+    Armv7,
+    Armv7s,
+    Arm64,
+    I386,
+    X86_64
+}
+
+impl Arch {
+    pub fn to_string(&self) -> &'static str {
+        match self {
+            &Armv7 => "armv7",
+            &Armv7s => "armv7s",
+            &Arm64 => "arm64",
+            &I386 => "i386",
+            &X86_64 => "x86_64"
+        }
+    }
+}
+
+pub fn get_sdk_root(sdk_name: &str) -> String {
+    let res = Command::new("xcrun")
+                      .arg("--show-sdk-path")
+                      .arg("-sdk")
+                      .arg(sdk_name)
+                      .spawn()
+                      .and_then(|c| c.wait_with_output())
+                      .and_then(|output| {
+                          if output.status.success() {
+                              Ok(String::from_utf8(output.output).unwrap())
+                          } else {
+                              Err(IoError {
+                                  kind: OtherIoError,
+                                  desc: "process exit with error",
+                                  detail: String::from_utf8(output.error).ok()})
+                          }
+                      });
+
+    match res {
+        Ok(output) => output.trim().to_string(),
+        Err(e) => panic!("failed to get {} SDK path: {}", sdk_name, e)
+    }
+}
+
+fn pre_link_args(arch: Arch) -> Vec<String> {
+    let sdk_name = match arch {
+        Armv7 | Armv7s | Arm64 => "iphoneos",
+        I386 | X86_64 => "iphonesimulator"
+    };
+
+    let arch_name = arch.to_string();
+
+    vec!["-arch".to_string(), arch_name.to_string(),
+         "-Wl,-syslibroot".to_string(), get_sdk_root(sdk_name)]
+}
+
+pub fn opts(arch: Arch) -> TargetOptions {
+    TargetOptions {
+        dynamic_linking: false,
+        executables: true,
+        // Although there is an experimental implementation of LLVM which
+        // supports SS on armv7 it wasn't approved by Apple, see:
+        // http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20140505/216350.html
+        // It looks like it might be never accepted to upstream LLVM.
+        //
+        // SS might be also enabled on Arm64 as it has builtin support in LLVM
+        // but I haven't tested it through yet
+        morestack: false,
+        pre_link_args: pre_link_args(arch),
+        .. super::apple_base::opts()
+    }
+}

src/librustc_back/target/armv7_apple_ios.rs

@@ -0,0 +1,27 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::{Target, TargetOptions};
+use super::apple_ios_base::{opts, Arch};
+
+pub fn target() -> Target {
+    Target {
+        data_layout: "e-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32".to_string(),
+        llvm_target: "armv7-apple-ios".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        arch: "arm".to_string(),
+        target_os: "ios".to_string(),
+        options: TargetOptions {
+            features: "+v7,+vfp3,+neon".to_string(),
+            .. opts(Arch::Armv7)
+        }
+    }
+}

src/librustc_back/target/armv7s_apple_ios.rs

@@ -0,0 +1,27 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+use target::{Target, TargetOptions};
+use super::apple_ios_base::{opts, Arch};
+
+pub fn target() -> Target {
+    Target {
+        data_layout: "e-p:32:32-f64:32:64-v64:32:64-v128:32:128-a:0:32-n32-S32".to_string(),
+        llvm_target: "armv7s-apple-ios".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        arch: "arm".to_string(),
+        target_os: "ios".to_string(),
+        options: TargetOptions {
+            features: "+v7,+vfp4,+neon".to_string(),
+            .. opts(Arch::Armv7s)
+        }
+    }
+}

src/librustc_back/target/i386_apple_ios.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 use target::Target;
+use super::apple_ios_base::{opts, Arch};
 
 pub fn target() -> Target {
     Target {
@@ -22,7 +23,6 @@ pub fn target() -> Target {
         target_pointer_width: "32".to_string(),
         arch: "x86".to_string(),
         target_os: "ios".to_string(),
-
-        options: super::apple_base::opts()
+        options: opts(Arch::I386)
     }
 }

src/librustc_back/target/mod.rs

@@ -53,16 +53,19 @@ use std::io::fs::PathExtensions;
 mod windows_base;
 mod linux_base;
 mod apple_base;
+mod apple_ios_base;
 mod freebsd_base;
 mod dragonfly_base;
 
-mod arm_apple_ios;
+mod armv7_apple_ios;
+mod armv7s_apple_ios;
+mod i386_apple_ios;
+
 mod arm_linux_androideabi;
 mod arm_unknown_linux_gnueabi;
 mod arm_unknown_linux_gnueabihf;
 mod aarch64_unknown_linux_gnu;
 mod i686_apple_darwin;
-mod i386_apple_ios;
 mod i686_pc_windows_gnu;
 mod i686_unknown_dragonfly;
 mod i686_unknown_linux_gnu;
@@ -346,8 +349,10 @@ impl Target {
 
             x86_64_apple_darwin,
             i686_apple_darwin,
+
             i386_apple_ios,
-            arm_apple_ios,
+            armv7_apple_ios,
+            armv7s_apple_ios,
 
             x86_64_pc_windows_gnu,
             i686_pc_windows_gnu