From 094981352ce27bc36018c009d07ddf974c9725f5 Mon Sep 17 00:00:00 2001
From: Miguel Ojeda <ojeda@kernel.org>
Date: Thu, 4 Aug 2022 12:16:44 +0200
Subject: x86: enable initial Rust support
Note that only x86_64 is covered and not all features nor mitigations
are handled, but it is enough as a starting point and showcases
the basics needed to add Rust support for a new architecture.
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com>
Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com>
Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com>
Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com>
Co-developed-by: David Gow <davidgow@google.com>
Signed-off-by: David Gow <davidgow@google.com>
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
---
scripts/generate_rust_target.rs | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
(limited to 'scripts')
diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs
index 7256c9606cf0..3c6cbe2b278d 100644
--- a/scripts/generate_rust_target.rs
+++ b/scripts/generate_rust_target.rs
@@ -148,8 +148,19 @@ fn main() {
let mut ts = TargetSpec::new();
// `llvm-target`s are taken from `scripts/Makefile.clang`.
- if cfg.has("DUMMY_ARCH") {
- ts.push("arch", "dummy_arch");
+ if cfg.has("X86_64") {
+ ts.push("arch", "x86_64");
+ ts.push(
+ "data-layout",
+ "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128",
+ );
+ let mut features = "-3dnow,-3dnowa,-mmx,+soft-float".to_string();
+ if cfg.has("RETPOLINE") {
+ features += ",+retpoline-external-thunk";
+ }
+ ts.push("features", features);
+ ts.push("llvm-target", "x86_64-linux-gnu");
+ ts.push("target-pointer-width", "64");
} else {
panic!("Unsupported architecture");
}
--
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