compiler/rustc_target/src/spec/x86_64_fortanix_unknown_sgx.rs

   1 use std::borrow::Cow;
   2
   3 use crate::spec::cvs;
   4
   5 use super::{LinkerFlavor, LldFlavor, Target, TargetOptions};
   6
   7 pub fn target() -> Target {
   8     let pre_link_args = TargetOptions::link_args(
   9         LinkerFlavor::Ld,
  10         &[
  11             "-e",
  12             "elf_entry",
  13             "-Bstatic",
  14             "--gc-sections",
  15             "-z",
  16             "text",
  17             "-z",
  18             "norelro",
  19             "--no-undefined",
  20             "--error-unresolved-symbols",
  21             "--no-undefined-version",
  22             "-Bsymbolic",
  23             "--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             "-u",
  27             "__rust_abort",
  28             "-u",
  29             "__rust_c_alloc",
  30             "-u",
  31             "__rust_c_dealloc",
  32             "-u",
  33             "__rust_print_err",
  34             "-u",
  35             "__rust_rwlock_rdlock",
  36             "-u",
  37             "__rust_rwlock_unlock",
  38             "-u",
  39             "__rust_rwlock_wrlock",
  40         ],
  41     );
  42
  43     const EXPORT_SYMBOLS: &[&str] = &[
  44         "sgx_entry",
  45         "HEAP_BASE",
  46         "HEAP_SIZE",
  47         "RELA",
  48         "RELACOUNT",
  49         "ENCLAVE_SIZE",
  50         "CFGDATA_BASE",
  51         "DEBUG",
  52         "EH_FRM_HDR_OFFSET",
  53         "EH_FRM_HDR_LEN",
  54         "EH_FRM_OFFSET",
  55         "EH_FRM_LEN",
  56         "TEXT_BASE",
  57         "TEXT_SIZE",
  58     ];
  59     let opts = TargetOptions {
  60         os: "unknown".into(),
  61         env: "sgx".into(),
  62         vendor: "fortanix".into(),
  63         abi: "fortanix".into(),
  64         linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
  65         linker: Some("rust-lld".into()),
  66         max_atomic_width: Some(64),
  67         cpu: "x86-64".into(),
  68         features: "+rdrnd,+rdseed,+lvi-cfi,+lvi-load-hardening".into(),
  69         llvm_args: cvs!["--x86-experimental-lvi-inline-asm-hardening"],
  70         position_independent_executables: true,
  71         pre_link_args,
  72         override_export_symbols: Some(EXPORT_SYMBOLS.iter().cloned().map(Cow::from).collect()),
  73         relax_elf_relocations: true,
  74         ..Default::default()
  75     };
  76     Target {
  77         llvm_target: "x86_64-elf".into(),
  78         pointer_width: 64,
  79         data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  80             .into(),
  81         arch: "x86_64".into(),
  82         options: opts,
  83     }
  84 }