src/librustc_target/spec/thumbv7a_pc_windows_msvc.rs

   1 use crate::spec::{LinkerFlavor, LldFlavor, PanicStrategy, Target, TargetOptions, TargetResult};
   2
   3 pub fn target() -> TargetResult {
   4     let mut base = super::windows_msvc_base::opts();
   5
   6     // Prevent error LNK2013: BRANCH24(T) fixup overflow
   7     // The LBR optimization tries to eliminate branch islands,
   8     // but if the displacement is larger than can fit
   9     // in the instruction, this error will occur. The linker
  10     // should be smart enough to insert branch islands only
  11     // where necessary, but this is not the observed behavior.
  12     // Disabling the LBR optimization works around the issue.
  13     let pre_link_args_msvc = "/OPT:NOLBR".to_string();
  14     base.pre_link_args.get_mut(&LinkerFlavor::Msvc).unwrap().push(pre_link_args_msvc.clone());
  15     base.pre_link_args
  16         .get_mut(&LinkerFlavor::Lld(LldFlavor::Link))
  17         .unwrap()
  18         .push(pre_link_args_msvc);
  19
  20     // FIXME(jordanrh): use PanicStrategy::Unwind when SEH is
  21     // implemented for windows/arm in LLVM
  22     base.panic_strategy = PanicStrategy::Abort;
  23
  24     Ok(Target {
  25         llvm_target: "thumbv7a-pc-windows-msvc".to_string(),
  26         target_endian: "little".to_string(),
  27         target_pointer_width: "32".to_string(),
  28         target_c_int_width: "32".to_string(),
  29         data_layout: "e-m:w-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64".to_string(),
  30         arch: "arm".to_string(),
  31         target_os: "windows".to_string(),
  32         target_env: "msvc".to_string(),
  33         target_vendor: "pc".to_string(),
  34         linker_flavor: LinkerFlavor::Msvc,
  35
  36         options: TargetOptions {
  37             features: "+vfp3,+neon".to_string(),
  38             cpu: "generic".to_string(),
  39             max_atomic_width: Some(64),
  40             abi_blacklist: super::arm_base::abi_blacklist(),
  41             ..base
  42         },
  43     })
  44 }