compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs

   1 use std::iter;
   2
   3 use super::{LinkerFlavor, LldFlavor, PanicStrategy, Target, TargetOptions};
   4
   5 pub fn target() -> Target {
   6     const PRE_LINK_ARGS: &[&str] = &[
   7         "--as-needed",
   8         "-z",
   9         "noexecstack",
  10         "-e",
  11         "elf_entry",
  12         "-Bstatic",
  13         "--gc-sections",
  14         "-z",
  15         "text",
  16         "-z",
  17         "norelro",
  18         "--no-undefined",
  19         "--error-unresolved-symbols",
  20         "--no-undefined-version",
  21         "-Bsymbolic",
  22         "--export-dynamic",
  23         // The following symbols are needed by libunwind, which is linked after
  24         // libstd. Make sure they're included in the link.
  25         "-u",
  26         "__rust_abort",
  27         "-u",
  28         "__rust_c_alloc",
  29         "-u",
  30         "__rust_c_dealloc",
  31         "-u",
  32         "__rust_print_err",
  33         "-u",
  34         "__rust_rwlock_rdlock",
  35         "-u",
  36         "__rust_rwlock_unlock",
  37         "-u",
  38         "__rust_rwlock_wrlock",
  39     ];
  40
  41     const EXPORT_SYMBOLS: &[&str] = &[
  42         "sgx_entry",
  43         "HEAP_BASE",
  44         "HEAP_SIZE",
  45         "RELA",
  46         "RELACOUNT",
  47         "ENCLAVE_SIZE",
  48         "CFGDATA_BASE",
  49         "DEBUG",
  50         "EH_FRM_HDR_OFFSET",
  51         "EH_FRM_HDR_LEN",
  52         "EH_FRM_OFFSET",
  53         "EH_FRM_LEN",
  54         "TEXT_BASE",
  55         "TEXT_SIZE",
  56     ];
  57     let opts = TargetOptions {
  58         os: "unknown".into(),
  59         env: "sgx".into(),
  60         vendor: "fortanix".into(),
  61         linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
  62         dynamic_linking: false,
  63         executables: true,
  64         linker_is_gnu: true,
  65         linker: Some("rust-lld".to_owned()),
  66         max_atomic_width: Some(64),
  67         panic_strategy: PanicStrategy::Unwind,
  68         cpu: "x86-64".into(),
  69         features: "+rdrnd,+rdseed,+lvi-cfi,+lvi-load-hardening".into(),
  70         llvm_args: vec!["--x86-experimental-lvi-inline-asm-hardening".into()],
  71         position_independent_executables: true,
  72         pre_link_args: iter::once((
  73             LinkerFlavor::Lld(LldFlavor::Ld),
  74             PRE_LINK_ARGS.iter().cloned().map(String::from).collect(),
  75         ))
  76         .collect(),
  77         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(String::from).collect()),
  78         relax_elf_relocations: true,
  79         ..Default::default()
  80     };
  81     Target {
  82         llvm_target: "x86_64-elf".into(),
  83         pointer_width: 64,
  84         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  85             .into(),
  86         arch: "x86_64".into(),
  87         options: opts,
  88     }
  89 }