compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs

   1 use std::borrow::Cow;
   2
   3 use super::{cvs, Cc, LinkerFlavor, Lld, Target, TargetOptions};
   4
   5 pub fn target() -> Target {
   6     let pre_link_args = TargetOptions::link_args(
   7         LinkerFlavor::Gnu(Cc::No, Lld::No),
   8         &[
   9             "-e",
  10             "elf_entry",
  11             "-Bstatic",
  12             "--gc-sections",
  13             "-z",
  14             "text",
  15             "-z",
  16             "norelro",
  17             "--no-undefined",
  18             "--error-unresolved-symbols",
  19             "--no-undefined-version",
  20             "-Bsymbolic",
  21             "--export-dynamic",
  22             // The following symbols are needed by libunwind, which is linked after
  23             // libstd. Make sure they're included in the link.
  24             "-u",
  25             "__rust_abort",
  26             "-u",
  27             "__rust_c_alloc",
  28             "-u",
  29             "__rust_c_dealloc",
  30             "-u",
  31             "__rust_print_err",
  32             "-u",
  33             "__rust_rwlock_rdlock",
  34             "-u",
  35             "__rust_rwlock_unlock",
  36             "-u",
  37             "__rust_rwlock_wrlock",
  38         ],
  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         abi: "fortanix".into(),
  62         linker_flavor: LinkerFlavor::Gnu(Cc::No, Lld::Yes),
  63         linker: Some("rust-lld".into()),
  64         max_atomic_width: Some(64),
  65         cpu: "x86-64".into(),
  66         features: "+rdrnd,+rdseed,+lvi-cfi,+lvi-load-hardening".into(),
  67         llvm_args: cvs!["--x86-experimental-lvi-inline-asm-hardening"],
  68         position_independent_executables: true,
  69         pre_link_args,
  70         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(Cow::from).collect()),
  71         relax_elf_relocations: true,
  72         ..Default::default()
  73     };
  74     Target {
  75         llvm_target: "x86_64-elf".into(),
  76         pointer_width: 64,
  77         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  78             .into(),
  79         arch: "x86_64".into(),
  80         options: opts,
  81     }
  82 }