Rollup merge of #50864 - jakllsch:add-netbsd-arm-target-specs, r=alexcrichton

Add NetBSD/arm target specs

src/bootstrap/native.rs

@@ -596,8 +596,10 @@ impl Step for Openssl {
             "arm-linux-androideabi" => "android",
             "arm-unknown-linux-gnueabi" => "linux-armv4",
             "arm-unknown-linux-gnueabihf" => "linux-armv4",
+            "armv6-unknown-netbsd-eabihf" => "BSD-generic32",
             "armv7-linux-androideabi" => "android-armv7",
             "armv7-unknown-linux-gnueabihf" => "linux-armv4",
+            "armv7-unknown-netbsd-eabihf" => "BSD-generic32",
             "i586-unknown-linux-gnu" => "linux-elf",
             "i586-unknown-linux-musl" => "linux-elf",
             "i686-apple-darwin" => "darwin-i386-cc",

src/libpanic_unwind/gcc.rs

@@ -143,7 +143,7 @@ const UNWIND_DATA_REG: (i32, i32) = (24, 25); // I0, I1
 // The personality routine for most of our targets, except ARM, which has a slightly different ABI
 // (however, iOS goes here as it uses SjLj unwinding).  Also, the 64-bit Windows implementation
 // lives in seh64_gnu.rs
-#[cfg(all(any(target_os = "ios", not(target_arch = "arm"))))]
+#[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm"))))]
 #[lang = "eh_personality"]
 #[no_mangle]
 #[allow(unused)]
@@ -184,7 +184,7 @@ unsafe extern "C" fn rust_eh_personality(version: c_int,
 
 // ARM EHABI personality routine.
 // http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038b/IHI0038B_ehabi.pdf
-#[cfg(all(target_arch = "arm", not(target_os = "ios")))]
+#[cfg(all(target_arch = "arm", not(target_os = "ios"), not(target_os = "netbsd")))]
 #[lang = "eh_personality"]
 #[no_mangle]
 unsafe extern "C" fn rust_eh_personality(state: uw::_Unwind_State,

src/librustc_target/spec/armv6_unknown_netbsd_eabihf.rs

@@ -0,0 +1,34 @@
+// 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 spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
+
+pub fn target() -> TargetResult {
+    let mut base = super::netbsd_base::opts();
+    base.max_atomic_width = Some(64);
+    Ok(Target {
+        llvm_target: "armv6-unknown-netbsdelf-eabihf".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        target_c_int_width: "32".to_string(),
+        data_layout: "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
+        arch: "arm".to_string(),
+        target_os: "netbsd".to_string(),
+        target_env: "eabihf".to_string(),
+        target_vendor: "unknown".to_string(),
+        linker_flavor: LinkerFlavor::Gcc,
+
+        options: TargetOptions {
+            features: "+v6,+vfp2".to_string(),
+            abi_blacklist: super::arm_base::abi_blacklist(),
+            .. base
+        }
+    })
+}

src/librustc_target/spec/armv7_unknown_netbsd_eabihf.rs

@@ -0,0 +1,35 @@
+// Copyright 2016 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 spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
+
+pub fn target() -> TargetResult {
+    let base = super::netbsd_base::opts();
+    Ok(Target {
+        llvm_target: "armv7-unknown-netbsdelf-eabihf".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        target_c_int_width: "32".to_string(),
+        data_layout: "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
+        arch: "arm".to_string(),
+        target_os: "netbsd".to_string(),
+        target_env: "eabihf".to_string(),
+        target_vendor: "unknown".to_string(),
+        linker_flavor: LinkerFlavor::Gcc,
+
+        options: TargetOptions {
+            features: "+v7,+vfp3,+d16,+thumb2,-neon".to_string(),
+            cpu: "generic".to_string(),
+            max_atomic_width: Some(64),
+            abi_blacklist: super::arm_base::abi_blacklist(),
+            .. base
+        }
+    })
+}

src/librustc_target/spec/mod.rs

@@ -317,6 +317,8 @@ supported_targets! {
     ("i686-unknown-openbsd", i686_unknown_openbsd),
     ("x86_64-unknown-openbsd", x86_64_unknown_openbsd),
 
+    ("armv6-unknown-netbsd-eabihf", armv6_unknown_netbsd_eabihf),
+    ("armv7-unknown-netbsd-eabihf", armv7_unknown_netbsd_eabihf),
     ("i686-unknown-netbsd", i686_unknown_netbsd),
     ("powerpc-unknown-netbsd", powerpc_unknown_netbsd),
     ("sparc64-unknown-netbsd", sparc64_unknown_netbsd),

src/libunwind/libunwind.rs

@@ -93,7 +93,7 @@ extern "C" {
 }
 
 cfg_if! {
-if #[cfg(all(any(target_os = "ios", not(target_arch = "arm"))))] {
+if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm"))))] {
     // Not ARM EHABI
     #[repr(C)]
     #[derive(Copy, Clone, PartialEq)]