From 1de5b226782361d9ea1929fd619f4fc2aaab1094 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?S=C3=A9bastien=20Marie?= Date: Sun, 28 Aug 2022 05:22:21 +0000 Subject: [PATCH] add riscv64gc-unknown-openbsd support (target riscv64-unknown-openbsd on OpenBSD) - add platform-support documentation - add riscv64gc-unknown-openbsd spec - do not try to link with -latomic on openbsd --- compiler/rustc_llvm/build.rs | 4 ++-- compiler/rustc_target/src/spec/mod.rs | 1 + .../src/spec/riscv64gc_unknown_openbsd.rs | 18 ++++++++++++++++++ src/bootstrap/native.rs | 5 +++-- src/doc/rustc/src/platform-support.md | 1 + src/doc/rustc/src/platform-support/openbsd.md | 1 + 6 files changed, 26 insertions(+), 4 deletions(-) create mode 100644 compiler/rustc_target/src/spec/riscv64gc_unknown_openbsd.rs diff --git a/compiler/rustc_llvm/build.rs b/compiler/rustc_llvm/build.rs index abb68f3afe527..28e092c1eb72c 100644 --- a/compiler/rustc_llvm/build.rs +++ b/compiler/rustc_llvm/build.rs @@ -342,10 +342,10 @@ fn main() { }; // RISC-V GCC erroneously requires libatomic for sub-word - // atomic operations. FreeBSD uses Clang as its system + // atomic operations. Some BSD uses Clang as its system // compiler and provides no libatomic in its base system so // does not want this. - if !target.contains("freebsd") && target.starts_with("riscv") { + if target.starts_with("riscv") && !target.contains("freebsd") && !target.contains("openbsd") { println!("cargo:rustc-link-lib=atomic"); } diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs index d579508768313..d1bffa2e6ee30 100644 --- a/compiler/rustc_target/src/spec/mod.rs +++ b/compiler/rustc_target/src/spec/mod.rs @@ -895,6 +895,7 @@ supported_targets! { ("i686-unknown-openbsd", i686_unknown_openbsd), ("powerpc-unknown-openbsd", powerpc_unknown_openbsd), ("powerpc64-unknown-openbsd", powerpc64_unknown_openbsd), + ("riscv64gc-unknown-openbsd", riscv64gc_unknown_openbsd), ("sparc64-unknown-openbsd", sparc64_unknown_openbsd), ("x86_64-unknown-openbsd", x86_64_unknown_openbsd), diff --git a/compiler/rustc_target/src/spec/riscv64gc_unknown_openbsd.rs b/compiler/rustc_target/src/spec/riscv64gc_unknown_openbsd.rs new file mode 100644 index 0000000000000..cd10f3afaac06 --- /dev/null +++ b/compiler/rustc_target/src/spec/riscv64gc_unknown_openbsd.rs @@ -0,0 +1,18 @@ +use crate::spec::{CodeModel, Target, TargetOptions}; + +pub fn target() -> Target { + Target { + llvm_target: "riscv64-unknown-openbsd".into(), + pointer_width: 64, + data_layout: "e-m:e-p:64:64-i64:64-i128:128-n64-S128".into(), + arch: "riscv64".into(), + options: TargetOptions { + code_model: Some(CodeModel::Medium), + cpu: "generic-rv64".into(), + features: "+m,+a,+f,+d,+c".into(), + llvm_abiname: "lp64d".into(), + max_atomic_width: Some(64), + ..super::openbsd_base::opts() + }, + } +} diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs index 7ecf74d3068d0..e1cc8d671d7fe 100644 --- a/src/bootstrap/native.rs +++ b/src/bootstrap/native.rs @@ -432,12 +432,13 @@ impl Step for Llvm { cfg.define("LLVM_LINK_LLVM_DYLIB", "ON"); } - if target.starts_with("riscv") && !target.contains("freebsd") { + if target.starts_with("riscv") && !target.contains("freebsd") && !target.contains("openbsd") + { // RISC-V GCC erroneously requires linking against // `libatomic` when using 1-byte and 2-byte C++ // atomics but the LLVM build system check cannot // detect this. Therefore it is set manually here. - // FreeBSD uses Clang as its system compiler and + // Some BSD uses Clang as its system compiler and // provides no libatomic in its base system so does // not want this. ldflags.exe.push(" -latomic"); diff --git a/src/doc/rustc/src/platform-support.md b/src/doc/rustc/src/platform-support.md index 34bd201d1cd07..742fbe11d9c6f 100644 --- a/src/doc/rustc/src/platform-support.md +++ b/src/doc/rustc/src/platform-support.md @@ -285,6 +285,7 @@ target | std | host | notes `riscv32imc-esp-espidf` | ✓ | | RISC-V ESP-IDF `riscv64gc-unknown-freebsd` | | | RISC-V FreeBSD `riscv64gc-unknown-linux-musl` | | | RISC-V Linux (kernel 4.20, musl 1.2.0) +[`riscv64gc-unknown-openbsd`](platform-support/openbsd.md) | ✓ | ✓ | OpenBSD/riscv64 `s390x-unknown-linux-musl` | | | S390x Linux (kernel 3.2, MUSL) `sparc-unknown-linux-gnu` | ✓ | | 32-bit SPARC Linux `sparc64-unknown-netbsd` | ✓ | ✓ | NetBSD/sparc64 diff --git a/src/doc/rustc/src/platform-support/openbsd.md b/src/doc/rustc/src/platform-support/openbsd.md index 432d8a9999419..4ce80157dbf9c 100644 --- a/src/doc/rustc/src/platform-support/openbsd.md +++ b/src/doc/rustc/src/platform-support/openbsd.md @@ -13,6 +13,7 @@ The target names follow this format: `$ARCH-unknown-openbsd`, where `$ARCH` spec | `aarch64-unknown-openbsd` | libc++ | [64-bit ARM systems](https://www.openbsd.org/arm64.html) | | `i686-unknown-openbsd` | libc++ | [Standard PC and clones based on the Intel i386 architecture and compatible processors](https://www.openbsd.org/i386.html) | | `powerpc64-unknown-openbsd` | libc++ | [IBM POWER-based PowerNV systems](https://www.openbsd.org/powerpc64.html) | +| `riscv64gc-unknown-openbsd` | libc++ | [64-bit RISC-V systems](https://www.openbsd.org/riscv64.html) | | `sparc64-unknown-openbsd` | estdc++ | [Sun UltraSPARC and Fujitsu SPARC64 systems](https://www.openbsd.org/sparc64.html) | | `x86_64-unknown-openbsd` | libc++ | [AMD64-based systems](https://www.openbsd.org/amd64.html) |