Rollup merge of rust-lang#37615 - atilag:armv5te-support, r=alexcrichton

Add support for ARMv5TE architecture

Author: eddyb

mk/cfg/armv5te-unknown-linux-gnueabi.mk

@@ -0,0 +1,26 @@
+# armv5-unknown-linux-gnueabi configuration
+CROSS_PREFIX_armv5te-unknown-linux-gnueabi=arm-linux-gnueabi-
+CC_armv5te-unknown-linux-gnueabi=gcc
+CXX_armv5te-unknown-linux-gnueabi=g++
+CPP_armv5te-unknown-linux-gnueabi=gcc -E
+AR_armv5te-unknown-linux-gnueabi=ar
+CFG_LIB_NAME_armv5te-unknown-linux-gnueabi=lib$(1).so
+CFG_STATIC_LIB_NAME_armv5te-unknown-linux-gnueabi=lib$(1).a
+CFG_LIB_GLOB_armv5te-unknown-linux-gnueabi=lib$(1)-*.so
+CFG_LIB_DSYM_GLOB_armv5te-unknown-linux-gnueabi=lib$(1)-*.dylib.dSYM
+CFG_JEMALLOC_CFLAGS_armv5te-unknown-linux-gnueabi := -D__arm__ -mfloat-abi=soft  $(CFLAGS) -march=armv5te -marm
+CFG_GCCISH_CFLAGS_armv5te-unknown-linux-gnueabi := -Wall -g -fPIC -D__arm__ -mfloat-abi=soft $(CFLAGS) -march=armv5te -marm
+CFG_GCCISH_CXXFLAGS_armv5te-unknown-linux-gnueabi := -fno-rtti $(CXXFLAGS)
+CFG_GCCISH_LINK_FLAGS_armv5te-unknown-linux-gnueabi := -shared -fPIC -g
+CFG_GCCISH_DEF_FLAG_armv5te-unknown-linux-gnueabi := -Wl,--export-dynamic,--dynamic-list=
+CFG_LLC_FLAGS_armv5te-unknown-linux-gnueabi :=
+CFG_INSTALL_NAME_ar,-unknown-linux-gnueabi =
+CFG_EXE_SUFFIX_armv5te-unknown-linux-gnueabi :=
+CFG_WINDOWSY_armv5te-unknown-linux-gnueabi :=
+CFG_UNIXY_armv5te-unknown-linux-gnueabi := 1
+CFG_LDPATH_armv5te-unknown-linux-gnueabi :=
+CFG_RUN_armv5te-unknown-linux-gnueabi=$(2)
+CFG_RUN_TARG_armv5te-unknown-linux-gnueabi=$(call CFG_RUN_armv5te-unknown-linux-gnueabi,,$(2))
+RUSTC_FLAGS_armv5te-unknown-linux-gnueabi :=
+RUSTC_CROSS_FLAGS_armv5te-unknown-linux-gnueabi :=
+CFG_GNU_TRIPLE_armv5te-unknown-linux-gnueabi := armv5te-unknown-linux-gnueabi

src/librustc_back/target/armv5te_unknown_linux_gnueabi.rs

@@ -0,0 +1,34 @@
+// 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 target::{Target, TargetOptions, TargetResult};
+
+pub fn target() -> TargetResult {
+    let base = super::linux_base::opts();
+    Ok(Target {
+        llvm_target: "armv5te-unknown-linux-gnueabi".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_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: "linux".to_string(),
+        target_env: "gnu".to_string(),
+        target_vendor: "unknown".to_string(),
+
+        options: TargetOptions {
+            features: "+soft-float".to_string(),
+            // No atomic instructions on ARMv5
+            max_atomic_width: Some(0),
+            abi_blacklist: super::arm_base::abi_blacklist(),
+            .. base
+        }
+    })
+}
+

src/librustc_back/target/mod.rs

@@ -145,6 +145,7 @@ supported_targets! {
     ("arm-unknown-linux-gnueabihf", arm_unknown_linux_gnueabihf),
     ("arm-unknown-linux-musleabi", arm_unknown_linux_musleabi),
     ("arm-unknown-linux-musleabihf", arm_unknown_linux_musleabihf),
+    ("armv5te-unknown-linux-gnueabi", armv5te_unknown_linux_gnueabi),
     ("armv7-unknown-linux-gnueabihf", armv7_unknown_linux_gnueabihf),
     ("armv7-unknown-linux-musleabihf", armv7_unknown_linux_musleabihf),
     ("aarch64-unknown-linux-gnu", aarch64_unknown_linux_gnu),