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10edeea4b4
Add a new 'pc' option to -Z branch-protection for aarch64 that enables the use of PC as a diversifier in PAC branch protection code. When the pauth-lr target feature is enabled in combination with -Z branch-protection=pac-ret,pc, the new 9.5-a instructions (pacibsppc, retaasppc, etc) will be generated.
41 lines
1.6 KiB
Rust
41 lines
1.6 KiB
Rust
// `-Z branch protection` is an unstable compiler feature which adds pointer-authentication
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// code (PAC), a useful hashing measure for verifying that pointers have not been modified.
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// This test checks that compilation and execution is successful when this feature is activated,
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// with some of its possible extra arguments (bti, pac-ret, pc, leaf, b-key).
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// See https://github.com/rust-lang/rust/pull/88354
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//@ only-aarch64
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// Reason: branch protection is not supported on other architectures
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//@ ignore-cross-compile
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// Reason: the compiled binary is executed
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use run_make_support::{build_native_static_lib, cc, is_msvc, llvm_ar, run, rustc};
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fn main() {
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build_native_static_lib("test");
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rustc().arg("-Zbranch-protection=bti,pac-ret,leaf").input("test.rs").run();
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run("test");
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cc().arg("-v")
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.arg("-c")
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.out_exe("test")
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.input("test.c")
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.arg("-mbranch-protection=bti+pac-ret+leaf")
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.run();
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let obj_file = if is_msvc() { "test.obj" } else { "test" };
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llvm_ar().obj_to_ar().output_input("libtest.a", &obj_file).run();
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rustc().arg("-Zbranch-protection=bti,pac-ret,leaf").input("test.rs").run();
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run("test");
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// FIXME: +pc was only recently added to LLVM
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// cc().arg("-v")
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// .arg("-c")
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// .out_exe("test")
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// .input("test.c")
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// .arg("-mbranch-protection=bti+pac-ret+pc+leaf")
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// .run();
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// let obj_file = if is_msvc() { "test.obj" } else { "test" };
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// llvm_ar().obj_to_ar().output_input("libtest.a", &obj_file).run();
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// rustc().arg("-Zbranch-protection=bti,pac-ret,pc,leaf").input("test.rs").run();
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// run("test");
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}
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