compiler/rustc_target/src/spec/x86_64_unknown_none.rs

   1 // Generic x86-64 target for bare-metal code - Floating point disabled
   2 //
   3 // Can be used in conjunction with the `target-feature` and
   4 // `target-cpu` compiler flags to opt-in more hardware-specific
   5 // features.
   6
   7 use super::{CodeModel, LinkerFlavor, LldFlavor, PanicStrategy};
   8 use super::{RelroLevel, StackProbeType, Target, TargetOptions};
   9
  10 pub fn target() -> Target {
  11     let opts = TargetOptions {
  12         cpu: "x86-64".into(),
  13         max_atomic_width: Some(64),
  14         // don't use probe-stack=inline-asm until rust#83139 and rust#84667 are resolved
  15         stack_probes: StackProbeType::Call,
  16         position_independent_executables: true,
  17         static_position_independent_executables: true,
  18         relro_level: RelroLevel::Full,
  19         linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
  20         linker: Some("rust-lld".into()),
  21         features:
  22             "-mmx,-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-3dnow,-3dnowa,-avx,-avx2,+soft-float"
  23                 .into(),
  24         disable_redzone: true,
  25         panic_strategy: PanicStrategy::Abort,
  26         code_model: Some(CodeModel::Kernel),
  27         ..Default::default()
  28     };
  29     Target {
  30         llvm_target: "x86_64-unknown-none-elf".into(),
  31         pointer_width: 64,
  32         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  33             .into(),
  34         arch: "x86_64".into(),
  35         options: opts,
  36     }
  37 }