Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
this commit adds 4 new target definitions to the compiler for easier cross compilation to ARM Cortex-M devices. - `thumbv6m-none-eabi` - For the Cortex-M0, Cortex-M0+ and Cortex-M1 - This architecture doesn't have hardware support (instructions) for atomics. Hence, the `Atomic*` structs are not available for this target. - `thumbv7m-none-eabi` - For the Cortex-M3 - `thumbv7em-none-eabi` - For the FPU-less variants of the Cortex-M4 and Cortex-M7 - On this target, all the floating point operations will be lowered software routines (intrinsics) - `thumbv7em-none-eabihf` - For the variants of the Cortex-M4 and Cortex-M7 that do have a FPU. - On this target, all the floating point operations will be lowered to hardware instructions No binary releases of standard crates, like `core`, are planned for these targets because Cargo, in the future, will compile e.g. the `core` crate on the fly as part of the `cargo build` process. In the meantime, you'll have to compile the `core` crate yourself. [Xargo] is the easiest way to do that as in handles the compilation of `core` automatically and can be used just like Cargo: `xargo build --target thumbv6m-none-eabi` is all that's needed. [Xargo]: https://crates.io/crates/xargo
- Loading branch information
Jorge Aparicio
committed
Oct 2, 2016
1 parent
8991ffc
commit 901c5f2
Showing
7 changed files
with
163 additions
and
2 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,20 @@ | ||
// 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::TargetOptions; | ||
use std::default::Default; | ||
|
||
pub fn opts() -> TargetOptions { | ||
TargetOptions { | ||
executables: true, | ||
linker: "arm-none-eabi-gcc".to_string(), | ||
.. Default::default() | ||
} | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -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 { | ||
Ok(Target { | ||
llvm_target: "thumbv6m-none-eabi".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: "none".to_string(), | ||
target_env: "".to_string(), | ||
target_vendor: "".to_string(), | ||
|
||
options: TargetOptions { | ||
// The ARMv6-M architecture doesn't support unaligned loads/stores so we disable them | ||
// with +strict-align. | ||
features: "+strict-align".to_string(), | ||
// There are no atomic instructions available in the instruction set of the ARMv6-M | ||
// architecture | ||
max_atomic_width: 0, | ||
.. super::thumb_base::opts() | ||
} | ||
}) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,29 @@ | ||
// 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 { | ||
Ok(Target { | ||
llvm_target: "thumbv7em-none-eabi".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: "none".to_string(), | ||
target_env: "".to_string(), | ||
target_vendor: "".to_string(), | ||
|
||
options: TargetOptions { | ||
max_atomic_width: 32, | ||
.. super::thumb_base::opts() | ||
}, | ||
}) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,31 @@ | ||
// 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 { | ||
Ok(Target { | ||
llvm_target: "thumbv7em-none-eabihf".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: "none".to_string(), | ||
target_env: "".to_string(), | ||
target_vendor: "".to_string(), | ||
|
||
options: TargetOptions { | ||
// vfp4 lowest common denominator between the Cortex-M4 (vfp4) and the Cortex-M7 (vfp5) | ||
features: "+vfp4".to_string(), | ||
max_atomic_width: 32, | ||
.. super::thumb_base::opts() | ||
} | ||
}) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,29 @@ | ||
// 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 { | ||
Ok(Target { | ||
llvm_target: "thumbv7m-none-eabi".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: "none".to_string(), | ||
target_env: "".to_string(), | ||
target_vendor: "".to_string(), | ||
|
||
options: TargetOptions { | ||
max_atomic_width: 32, | ||
.. super::thumb_base::opts() | ||
}, | ||
}) | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,5 @@ | ||
-include ../tools.mk | ||
|
||
# The target used below doesn't support atomic operations. Verify that's the case | ||
all: | ||
rustc --print cfg --target thumbv6m-none-eabi | grep -qv target_has_atomic |