Auto merge of #113061 - Amanieu:x86_64-ohos, r=compiler-errors

Add x86_64-unknown-linux-ohos target

This complements the existing `aarch64-unknown-linux-ohos` and `armv7-unknown-linux-ohos` targets.

This should be covered by the existing MCP (https://github.com/rust-lang/compiler-team/issues/568), but I can also create a new MCP if that is preferred.

compiler/rustc_target/src/spec/aarch64_unknown_linux_ohos.rs

@@ -3,9 +3,7 @@ use crate::spec::{Target, TargetOptions};
 use super::SanitizerSet;
 
 pub fn target() -> Target {
-    let mut base = super::linux_musl_base::opts();
-    base.env = "ohos".into();
-    base.crt_static_default = false;
+    let mut base = super::linux_ohos_base::opts();
     base.max_atomic_width = Some(128);
 
     Target {
@@ -17,8 +15,6 @@ pub fn target() -> Target {
         options: TargetOptions {
             features: "+reserve-x18".into(),
             mcount: "\u{1}_mcount".into(),
-            force_emulated_tls: true,
-            has_thread_local: false,
             supported_sanitizers: SanitizerSet::ADDRESS
                 | SanitizerSet::CFI
                 | SanitizerSet::LEAK

compiler/rustc_target/src/spec/armv7_unknown_linux_ohos.rs

@@ -17,12 +17,8 @@ pub fn target() -> Target {
             abi: "eabi".into(),
             features: "+v7,+thumb2,+soft-float,-neon".into(),
             max_atomic_width: Some(64),
-            env: "ohos".into(),
-            crt_static_default: false,
             mcount: "\u{1}mcount".into(),
-            force_emulated_tls: true,
-            has_thread_local: false,
-            ..super::linux_musl_base::opts()
+            ..super::linux_ohos_base::opts()
         },
     }
 }

compiler/rustc_target/src/spec/linux_ohos_base.rs

@@ -0,0 +1,12 @@
+use crate::spec::TargetOptions;
+
+pub fn opts() -> TargetOptions {
+    let mut base = super::linux_base::opts();
+
+    base.env = "ohos".into();
+    base.crt_static_default = false;
+    base.force_emulated_tls = true;
+    base.has_thread_local = false;
+
+    base
+}

compiler/rustc_target/src/spec/mod.rs

@@ -74,6 +74,7 @@ mod l4re_base;
 mod linux_base;
 mod linux_gnu_base;
 mod linux_musl_base;
+mod linux_ohos_base;
 mod linux_uclibc_base;
 mod msvc_base;
 mod netbsd_base;
@@ -1495,6 +1496,7 @@ supported_targets! {
 
     ("aarch64-unknown-linux-ohos", aarch64_unknown_linux_ohos),
     ("armv7-unknown-linux-ohos", armv7_unknown_linux_ohos),
+    ("x86_64-unknown-linux-ohos", x86_64_unknown_linux_ohos),
 }
 
 /// Cow-Vec-Str: Cow<'static, [Cow<'static, str>]>

compiler/rustc_target/src/spec/x86_64_unknown_linux_ohos.rs

@@ -0,0 +1,26 @@
+use crate::spec::{Cc, LinkerFlavor, Lld, SanitizerSet, StackProbeType, Target};
+
+pub fn target() -> Target {
+    let mut base = super::linux_ohos_base::opts();
+    base.cpu = "x86-64".into();
+    base.max_atomic_width = Some(64);
+    base.add_pre_link_args(LinkerFlavor::Gnu(Cc::Yes, Lld::No), &["-m64"]);
+    base.stack_probes = StackProbeType::X86;
+    base.static_position_independent_executables = true;
+    base.supported_sanitizers = SanitizerSet::ADDRESS
+        | SanitizerSet::CFI
+        | SanitizerSet::LEAK
+        | SanitizerSet::MEMORY
+        | SanitizerSet::THREAD;
+    base.supports_xray = true;
+
+    Target {
+        // LLVM 15 doesn't support OpenHarmony yet, use a linux target instead.
+        llvm_target: "x86_64-unknown-linux-musl".into(),
+        pointer_width: 64,
+        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
+            .into(),
+        arch: "x86_64".into(),
+        options: base,
+    }
+}