src/librustc_target/spec/x86_64_fortanix_unknown_sgx.rs

   1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 use std::iter;
  12
  13 use super::{LinkerFlavor, Target, TargetOptions, PanicStrategy};
  14
  15 pub fn target() -> Result<Target, String> {
  16     const PRE_LINK_ARGS: &[&str] = &[
  17         "-Wl,--as-needed",
  18         "-Wl,-z,noexecstack",
  19         "-m64",
  20          "-fuse-ld=gold",
  21          "-nostdlib",
  22          "-shared",
  23          "-Wl,-e,sgx_entry",
  24          "-Wl,-Bstatic",
  25          "-Wl,--gc-sections",
  26          "-Wl,-z,text",
  27          "-Wl,-z,norelro",
  28          "-Wl,--rosegment",
  29          "-Wl,--no-undefined",
  30          "-Wl,--error-unresolved-symbols",
  31          "-Wl,--no-undefined-version",
  32          "-Wl,-Bsymbolic",
  33          "-Wl,--export-dynamic",
  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     ];
  45     let opts = TargetOptions {
  46         dynamic_linking: false,
  47         executables: true,
  48         linker_is_gnu: true,
  49         max_atomic_width: Some(64),
  50         panic_strategy: PanicStrategy::Abort,
  51         cpu: "x86-64".into(),
  52         position_independent_executables: true,
  53         pre_link_args: iter::once(
  54                 (LinkerFlavor::Gcc, PRE_LINK_ARGS.iter().cloned().map(String::from).collect())
  55         ).collect(),
  56         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(String::from).collect()),
  57         ..Default::default()
  58     };
  59     Ok(Target {
  60         llvm_target: "x86_64-unknown-linux-gnu".into(),
  61         target_endian: "little".into(),
  62         target_pointer_width: "64".into(),
  63         target_c_int_width: "32".into(),
  64         target_os: "unknown".into(),
  65         target_env: "sgx".into(),
  66         target_vendor: "fortanix".into(),
  67         data_layout: "e-m:e-i64:64-f80:128-n8:16:32:64-S128".into(),
  68         arch: "x86_64".into(),
  69         linker_flavor: LinkerFlavor::Gcc,
  70         options: opts,
  71     })
  72 }