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Auto merge of #75406 - mati865:mingw-aslr, r=Mark-Simulacrum

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Enable ASLR for windows-gnu

Fixes https://github.com/rust-lang/rust/issues/16514
Fixes https://github.com/rust-lang/rust/issues/16593
Fixes https://github.com/rust-lang/rust/issues/17684

Passes the tests for me with x86_64 toolchain.
This commit is contained in:
bors 2020-10-13 14:12:08 +00:00
commit d65c08e9cc
3 changed files with 12 additions and 2 deletions
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4
compiler/rustc_target/src/spec/windows_gnu_base.rs
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@ -11,6 +11,10 @@ pub fn opts() -> TargetOptions {
"-fno-use-linker-plugin".to_string(),
// Always enable DEP (NX bit) when it is available
"-Wl,--nxcompat".to_string(),
// Enable ASLR
"-Wl,--dynamicbase".to_string(),
// ASLR will rebase it anyway so leaving that option enabled only leads to confusion
"-Wl,--disable-auto-image-base".to_string(),
],
);

5
compiler/rustc_target/src/spec/x86_64_pc_windows_gnu.rs
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@ -3,7 +3,10 @@ use crate::spec::{LinkerFlavor, LldFlavor, Target};
pub fn target() -> Target {
let mut base = super::windows_gnu_base::opts();
base.cpu = "x86-64".to_string();
base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-m64".to_string());
let gcc_pre_link_args = base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap();
gcc_pre_link_args.push("-m64".to_string());
// Use high-entropy 64 bit address space for ASLR
gcc_pre_link_args.push("-Wl,--high-entropy-va".to_string());
base.pre_link_args
.insert(LinkerFlavor::Lld(LldFlavor::Ld), vec!["-m".to_string(), "i386pep".to_string()]);
base.max_atomic_width = Some(64);

5
compiler/rustc_target/src/spec/x86_64_uwp_windows_gnu.rs
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@ -3,7 +3,10 @@ use crate::spec::{LinkerFlavor, LldFlavor, Target};
pub fn target() -> Target {
let mut base = super::windows_uwp_gnu_base::opts();
base.cpu = "x86-64".to_string();
base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap().push("-m64".to_string());
let gcc_pre_link_args = base.pre_link_args.get_mut(&LinkerFlavor::Gcc).unwrap();
gcc_pre_link_args.push("-m64".to_string());
// Use high-entropy 64 bit address space for ASLR
gcc_pre_link_args.push("-Wl,--high-entropy-va".to_string());
base.pre_link_args
.insert(LinkerFlavor::Lld(LldFlavor::Ld), vec!["-m".to_string(), "i386pep".to_string()]);
base.max_atomic_width = Some(64);