diff options
Diffstat (limited to 'compiler/rustc_target/src/spec/armv7a_none_eabi.rs')
-rw-r--r-- | compiler/rustc_target/src/spec/armv7a_none_eabi.rs | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/compiler/rustc_target/src/spec/armv7a_none_eabi.rs b/compiler/rustc_target/src/spec/armv7a_none_eabi.rs new file mode 100644 index 000000000..cb5cbe158 --- /dev/null +++ b/compiler/rustc_target/src/spec/armv7a_none_eabi.rs @@ -0,0 +1,40 @@ +// Generic ARMv7-A target for bare-metal code - floating point disabled +// +// This is basically the `armv7-unknown-linux-gnueabi` target with some changes +// (listed below) to bring it closer to the bare-metal `thumb` & `aarch64` +// targets: +// +// - `TargetOptions.features`: added `+strict-align`. rationale: unaligned +// memory access is disabled on boot on these cores +// - linker changed to LLD. rationale: C is not strictly needed to build +// bare-metal binaries (the `gcc` linker has the advantage that it knows where C +// libraries and crt*.o are but it's not much of an advantage here); LLD is also +// faster +// - `panic_strategy` set to `abort`. rationale: matches `thumb` targets +// - `relocation-model` set to `static`; also no PIE, no relro and no dynamic +// linking. rationale: matches `thumb` targets + +use super::{LinkerFlavor, LldFlavor, PanicStrategy, RelocModel, Target, TargetOptions}; + +pub fn target() -> Target { + let opts = TargetOptions { + abi: "eabi".into(), + linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld), + linker: Some("rust-lld".into()), + features: "+v7,+thumb2,+soft-float,-neon,+strict-align".into(), + relocation_model: RelocModel::Static, + disable_redzone: true, + max_atomic_width: Some(64), + panic_strategy: PanicStrategy::Abort, + emit_debug_gdb_scripts: false, + c_enum_min_bits: 8, + ..Default::default() + }; + Target { + llvm_target: "armv7a-none-eabi".into(), + pointer_width: 32, + data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".into(), + arch: "arm".into(), + options: opts, + } +} |