src/librustc_target/spec/x86_64_fortanix_unknown_sgx.rs

   1 use std::iter;
   2
   3 use super::{LinkerFlavor, PanicStrategy, Target, TargetOptions};
   4
   5 pub fn target() -> Result<Target, String> {
   6     const PRE_LINK_ARGS: &[&str] = &[
   7         "-Wl,--as-needed",
   8         "-Wl,-z,noexecstack",
   9         "-m64",
  10         "-fuse-ld=gold",
  11         "-nostdlib",
  12         "-shared",
  13         "-Wl,-e,sgx_entry",
  14         "-Wl,-Bstatic",
  15         "-Wl,--gc-sections",
  16         "-Wl,-z,text",
  17         "-Wl,-z,norelro",
  18         "-Wl,--rosegment",
  19         "-Wl,--no-undefined",
  20         "-Wl,--error-unresolved-symbols",
  21         "-Wl,--no-undefined-version",
  22         "-Wl,-Bsymbolic",
  23         "-Wl,--export-dynamic",
  24     ];
  25
  26     const EXPORT_SYMBOLS: &[&str] = &[
  27         "sgx_entry",
  28         "HEAP_BASE",
  29         "HEAP_SIZE",
  30         "RELA",
  31         "RELACOUNT",
  32         "ENCLAVE_SIZE",
  33         "CFGDATA_BASE",
  34         "DEBUG",
  35         "EH_FRM_HDR_BASE",
  36         "EH_FRM_HDR_SIZE",
  37         "TEXT_BASE",
  38         "TEXT_SIZE",
  39     ];
  40     let opts = TargetOptions {
  41         dynamic_linking: false,
  42         executables: true,
  43         linker_is_gnu: true,
  44         max_atomic_width: Some(64),
  45         panic_strategy: PanicStrategy::Unwind,
  46         cpu: "x86-64".into(),
  47         features: "+rdrnd,+rdseed".into(),
  48         position_independent_executables: true,
  49         pre_link_args: iter::once((
  50             LinkerFlavor::Gcc,
  51             PRE_LINK_ARGS.iter().cloned().map(String::from).collect(),
  52         ))
  53         .collect(),
  54         post_link_objects: vec!["libunwind.a".into()],
  55         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(String::from).collect()),
  56         ..Default::default()
  57     };
  58     Ok(Target {
  59         llvm_target: "x86_64-unknown-linux-gnu".into(),
  60         target_endian: "little".into(),
  61         target_pointer_width: "64".into(),
  62         target_c_int_width: "32".into(),
  63         target_os: "unknown".into(),
  64         target_env: "sgx".into(),
  65         target_vendor: "fortanix".into(),
  66         data_layout: "e-m:e-i64:64-f80:128-n8:16:32:64-S128".into(),
  67         arch: "x86_64".into(),
  68         linker_flavor: LinkerFlavor::Gcc,
  69         options: opts,
  70     })
  71 }