diff options
Diffstat (limited to 'scripts/generate_rust_target.rs')
| -rw-r--r-- | scripts/generate_rust_target.rs | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/scripts/generate_rust_target.rs b/scripts/generate_rust_target.rs index 0d00ac3723b5..39c82908ff3a 100644 --- a/scripts/generate_rust_target.rs +++ b/scripts/generate_rust_target.rs @@ -165,6 +165,18 @@ impl KernelConfig { let option = "CONFIG_".to_owned() + option; self.0.contains_key(&option) } + + /// Is the rustc version at least `major.minor.patch`? + fn rustc_version_atleast(&self, major: u32, minor: u32, patch: u32) -> bool { + let check_version = 100000 * major + 100 * minor + patch; + let actual_version = self + .0 + .get("CONFIG_RUSTC_VERSION") + .unwrap() + .parse::<u32>() + .unwrap(); + check_version <= actual_version + } } fn main() { @@ -172,7 +184,9 @@ fn main() { let mut ts = TargetSpec::new(); // `llvm-target`s are taken from `scripts/Makefile.clang`. - if cfg.has("ARM64") { + if cfg.has("ARM") { + panic!("arm uses the builtin rustc target"); + } else if cfg.has("ARM64") { panic!("arm64 uses the builtin rustc aarch64-unknown-none target"); } else if cfg.has("RISCV") { if cfg.has("64BIT") { @@ -182,6 +196,9 @@ fn main() { } } else if cfg.has("X86_64") { ts.push("arch", "x86_64"); + if cfg.rustc_version_atleast(1, 86, 0) { + ts.push("rustc-abi", "x86-softfloat"); + } ts.push( "data-layout", "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128", @@ -192,7 +209,7 @@ fn main() { // target feature of the same name plus the other two target features in // `clang/lib/Driver/ToolChains/Arch/X86.cpp`. These should be eventually enabled via // `-Ctarget-feature` when `rustc` starts recognizing them (or via a new dedicated - // flag); see https://github.com/rust-lang/rust/issues/116852. + // flag); see <https://github.com/rust-lang/rust/issues/116852>. features += ",+retpoline-external-thunk"; features += ",+retpoline-indirect-branches"; features += ",+retpoline-indirect-calls"; @@ -201,7 +218,7 @@ fn main() { // The kernel uses `-mharden-sls=all`, which Clang maps to both these target features in // `clang/lib/Driver/ToolChains/Arch/X86.cpp`. These should be eventually enabled via // `-Ctarget-feature` when `rustc` starts recognizing them (or via a new dedicated - // flag); see https://github.com/rust-lang/rust/issues/116851. + // flag); see <https://github.com/rust-lang/rust/issues/116851>. features += ",+harden-sls-ijmp"; features += ",+harden-sls-ret"; } @@ -215,6 +232,9 @@ fn main() { panic!("32-bit x86 only works under UML"); } ts.push("arch", "x86"); + if cfg.rustc_version_atleast(1, 86, 0) { + ts.push("rustc-abi", "x86-softfloat"); + } ts.push( "data-layout", "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128", |