compiler/rustc_target/src/spec/thumbv7neon_unknown_linux_musleabihf.rs

   1 use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
   2
   3 // This target is for musl Linux on ARMv7 with thumb mode enabled
   4 // (for consistency with Android and Debian-based distributions)
   5 // and with NEON unconditionally enabled and, therefore, with 32 FPU
   6 // registers enabled as well. See section A2.6.2 on page A2-56 in
   7 // https://static.docs.arm.com/ddi0406/cd/DDI0406C_d_armv7ar_arm.pdf
   8
   9 pub fn target() -> TargetResult {
  10     let base = super::linux_musl_base::opts();
  11     Ok(Target {
  12         // It's important we use "gnueabihf" and not "musleabihf" here. LLVM
  13         // uses it to determine the calling convention and float ABI, and LLVM
  14         // doesn't support the "musleabihf" value.
  15         llvm_target: "armv7-unknown-linux-gnueabihf".to_string(),
  16         target_endian: "little".to_string(),
  17         target_pointer_width: "32".to_string(),
  18         target_c_int_width: "32".to_string(),
  19         data_layout: "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
  20         arch: "arm".to_string(),
  21         target_os: "linux".to_string(),
  22         target_env: "musl".to_string(),
  23         target_vendor: "unknown".to_string(),
  24         linker_flavor: LinkerFlavor::Gcc,
  25
  26         // Most of these settings are copied from the thumbv7neon_unknown_linux_gnueabihf
  27         // target.
  28         options: TargetOptions {
  29             features: "+v7,+thumb-mode,+thumb2,+vfp3,+neon".to_string(),
  30             cpu: "generic".to_string(),
  31             max_atomic_width: Some(64),
  32             unsupported_abis: super::arm_base::unsupported_abis(),
  33             target_mcount: "\u{1}mcount".to_string(),
  34             ..base
  35         },
  36     })
  37 }