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         // The following symbols are needed by libunwind, which is linked after
  25         // libstd. Make sure they're included in the link.
  26         "-Wl,-u,__rust_abort",
  27         "-Wl,-u,__rust_c_alloc",
  28         "-Wl,-u,__rust_c_dealloc",
  29         "-Wl,-u,__rust_print_err",
  30         "-Wl,-u,__rust_rwlock_rdlock",
  31         "-Wl,-u,__rust_rwlock_unlock",
  32         "-Wl,-u,__rust_rwlock_wrlock",
  33     ];
  34
  35     const EXPORT_SYMBOLS: &[&str] = &[
  36         "sgx_entry",
  37         "HEAP_BASE",
  38         "HEAP_SIZE",
  39         "RELA",
  40         "RELACOUNT",
  41         "ENCLAVE_SIZE",
  42         "CFGDATA_BASE",
  43         "DEBUG",
  44         "EH_FRM_HDR_BASE",
  45         "EH_FRM_HDR_SIZE",
  46         "TEXT_BASE",
  47         "TEXT_SIZE",
  48     ];
  49     let opts = TargetOptions {
  50         dynamic_linking: false,
  51         executables: true,
  52         linker_is_gnu: true,
  53         max_atomic_width: Some(64),
  54         panic_strategy: PanicStrategy::Unwind,
  55         cpu: "x86-64".into(),
  56         features: "+rdrnd,+rdseed".into(),
  57         position_independent_executables: true,
  58         pre_link_args: iter::once((
  59             LinkerFlavor::Gcc,
  60             PRE_LINK_ARGS.iter().cloned().map(String::from).collect(),
  61         ))
  62         .collect(),
  63         post_link_objects: vec!["libunwind.a".into()],
  64         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(String::from).collect()),
  65         ..Default::default()
  66     };
  67     Ok(Target {
  68         llvm_target: "x86_64-unknown-linux-gnu".into(),
  69         target_endian: "little".into(),
  70         target_pointer_width: "64".into(),
  71         target_c_int_width: "32".into(),
  72         target_os: "unknown".into(),
  73         target_env: "sgx".into(),
  74         target_vendor: "fortanix".into(),
  75         data_layout: "e-m:e-i64:64-f80:128-n8:16:32:64-S128".into(),
  76         arch: "x86_64".into(),
  77         linker_flavor: LinkerFlavor::Gcc,
  78         options: opts,
  79     })
  80 }