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Add target thumbv7neon-unknown-linux-musleabihf #66103

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Nov 6, 2019
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1 change: 1 addition & 0 deletions src/librustc_target/spec/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -362,6 +362,7 @@ supported_targets! {
("armv7-unknown-linux-gnueabi", armv7_unknown_linux_gnueabi),
("armv7-unknown-linux-gnueabihf", armv7_unknown_linux_gnueabihf),
("thumbv7neon-unknown-linux-gnueabihf", thumbv7neon_unknown_linux_gnueabihf),
("thumbv7neon-unknown-linux-musleabihf", thumbv7neon_unknown_linux_musleabihf),
("armv7-unknown-linux-musleabi", armv7_unknown_linux_musleabi),
("armv7-unknown-linux-musleabihf", armv7_unknown_linux_musleabihf),
("aarch64-unknown-linux-gnu", aarch64_unknown_linux_gnu),
Expand Down
37 changes: 37 additions & 0 deletions src/librustc_target/spec/thumbv7neon_unknown_linux_musleabihf.rs
Original file line number Diff line number Diff line change
@@ -0,0 +1,37 @@
use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult};

// This target is for musl Linux on ARMv7 with thumb mode enabled
// (for consistency with Android and Debian-based distributions)
// and with NEON unconditionally enabled and, therefore, with 32 FPU
// registers enabled as well. See section A2.6.2 on page A2-56 in
// https://static.docs.arm.com/ddi0406/cd/DDI0406C_d_armv7ar_arm.pdf

pub fn target() -> TargetResult {
let base = super::linux_musl_base::opts();
Ok(Target {
// It's important we use "gnueabihf" and not "musleabihf" here. LLVM
// uses it to determine the calling convention and float ABI, and LLVM
// doesn't support the "musleabihf" value.
llvm_target: "armv7-unknown-linux-gnueabihf".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-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
arch: "arm".to_string(),
target_os: "linux".to_string(),
target_env: "musl".to_string(),
target_vendor: "unknown".to_string(),
linker_flavor: LinkerFlavor::Gcc,

// Most of these settings are copied from the thumbv7neon_unknown_linux_gnueabihf
// target.
options: TargetOptions {
features: "+v7,+thumb-mode,+thumb2,+vfp3,+neon".to_string(),
cpu: "generic".to_string(),
max_atomic_width: Some(64),
abi_blacklist: super::arm_base::abi_blacklist(),
target_mcount: "\u{1}mcount".to_string(),
.. base
}
})
}