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