compiler: Add {x86_64,aarch64,riscv64gc}-unknown-managarm-mlibc targets

Co-authored-by: Dennis Bonke <[email protected]>

Author: no92

compiler/rustc_target/src/spec/base/managarm_mlibc.rs

@@ -0,0 +1,17 @@
+use crate::spec::{RelroLevel, TargetOptions, cvs};
+
+pub(crate) fn opts() -> TargetOptions {
+    TargetOptions {
+        os: "managarm".into(),
+        env: "mlibc".into(),
+        dynamic_linking: true,
+        executables: true,
+        families: cvs!["unix"],
+        has_rpath: true,
+        position_independent_executables: true,
+        relro_level: RelroLevel::Full,
+        has_thread_local: true,
+        crt_static_respected: true,
+        ..Default::default()
+    }
+}

compiler/rustc_target/src/spec/base/mod.rs

@@ -20,6 +20,7 @@ pub(crate) mod linux_ohos;
 pub(crate) mod linux_uclibc;
 pub(crate) mod linux_wasm;
 pub(crate) mod lynxos178;
+pub(crate) mod managarm_mlibc;
 pub(crate) mod msvc;
 pub(crate) mod netbsd;
 pub(crate) mod nto_qnx;

compiler/rustc_target/src/spec/mod.rs

@@ -2032,6 +2032,10 @@ supported_targets! {
     ("i586-unknown-redox", i586_unknown_redox),
     ("x86_64-unknown-redox", x86_64_unknown_redox),
 
+    ("x86_64-unknown-managarm-mlibc", x86_64_unknown_managarm_mlibc),
+    ("aarch64-unknown-managarm-mlibc", aarch64_unknown_managarm_mlibc),
+    ("riscv64gc-unknown-managarm-mlibc", riscv64gc_unknown_managarm_mlibc),
+
     ("i386-apple-ios", i386_apple_ios),
     ("x86_64-apple-ios", x86_64_apple_ios),
     ("aarch64-apple-ios", aarch64_apple_ios),

compiler/rustc_target/src/spec/targets/aarch64_unknown_managarm_mlibc.rs

@@ -0,0 +1,22 @@
+use crate::spec::{StackProbeType, Target, base};
+
+pub(crate) fn target() -> Target {
+    let mut base = base::managarm_mlibc::opts();
+    base.max_atomic_width = Some(128);
+    base.stack_probes = StackProbeType::Inline;
+    base.features = "+v8a".into();
+
+    Target {
+        llvm_target: "aarch64-unknown-managarm-mlibc".into(),
+        metadata: crate::spec::TargetMetadata {
+            description: Some("managarm/aarch64".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(false),
+        },
+        pointer_width: 64,
+        data_layout: "e-m:e-p270:32:32-p271:32:32-p272:64:64-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-Fn32".into(),
+        arch: "aarch64".into(),
+        options: base
+    }
+}

compiler/rustc_target/src/spec/targets/riscv64gc_unknown_managarm_mlibc.rs

@@ -0,0 +1,24 @@
+use crate::spec::{CodeModel, Target, TargetOptions, base};
+
+pub(crate) fn target() -> Target {
+    Target {
+        llvm_target: "riscv64-unknown-managarm-mlibc".into(),
+        metadata: crate::spec::TargetMetadata {
+            description: Some("managarm/riscv64".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(false),
+        },
+        pointer_width: 64,
+        data_layout: "e-m:e-p:64:64-i64:64-i128:128-n32:64-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),
+            ..base::managarm_mlibc::opts()
+        },
+    }
+}

compiler/rustc_target/src/spec/targets/x86_64_unknown_managarm_mlibc.rs

@@ -0,0 +1,24 @@
+use crate::spec::{Cc, LinkerFlavor, Lld, StackProbeType, Target, base};
+
+pub(crate) fn target() -> Target {
+    let mut base = base::managarm_mlibc::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::Inline;
+
+    Target {
+        llvm_target: "x86_64-unknown-managarm-mlibc".into(),
+        metadata: crate::spec::TargetMetadata {
+            description: Some("managarm/amd64".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(false),
+        },
+        pointer_width: 64,
+        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".into(),
+        arch: "x86_64".into(),
+        options: base,
+    }
+}

src/tools/build-manifest/src/main.rs

@@ -71,6 +71,7 @@ static TARGETS: &[&str] = &[
     "aarch64-unknown-none-softfloat",
     "aarch64-unknown-redox",
     "aarch64-unknown-uefi",
+    "aarch64-unknown-managarm-mlibc",
     "amdgcn-amd-amdhsa",
     "arm64e-apple-darwin",
     "arm64e-apple-ios",
@@ -155,6 +156,7 @@ static TARGETS: &[&str] = &[
     "riscv64gc-unknown-none-elf",
     "riscv64gc-unknown-linux-gnu",
     "riscv64gc-unknown-linux-musl",
+    "riscv64gc-unknown-managarm-mlibc",
     "s390x-unknown-linux-gnu",
     "sparc64-unknown-linux-gnu",
     "sparcv9-sun-solaris",
@@ -194,6 +196,7 @@ static TARGETS: &[&str] = &[
     "x86_64-unknown-redox",
     "x86_64-unknown-hermit",
     "x86_64-unknown-uefi",
+    "x86_64-unknown-managarm-mlibc",
 ];
 
 /// This allows the manifest to contain rust-docs for hosts that don't build

tests/assembly-llvm/targets/targets-elf.rs

@@ -52,6 +52,9 @@
 //@ revisions: aarch64_unknown_linux_ohos
 //@ [aarch64_unknown_linux_ohos] compile-flags: --target aarch64-unknown-linux-ohos
 //@ [aarch64_unknown_linux_ohos] needs-llvm-components: aarch64
+//@ revisions: aarch64_unknown_managarm_mlibc
+//@ [aarch64_unknown_managarm_mlibc] compile-flags: --target aarch64-unknown-managarm-mlibc
+//@ [aarch64_unknown_managarm_mlibc] needs-llvm-components: aarch64
 //@ revisions: aarch64_unknown_netbsd
 //@ [aarch64_unknown_netbsd] compile-flags: --target aarch64-unknown-netbsd
 //@ [aarch64_unknown_netbsd] needs-llvm-components: aarch64
@@ -490,6 +493,9 @@
 //@ revisions: riscv64gc_unknown_linux_musl
 //@ [riscv64gc_unknown_linux_musl] compile-flags: --target riscv64gc-unknown-linux-musl
 //@ [riscv64gc_unknown_linux_musl] needs-llvm-components: riscv
+//@ revisions: riscv64gc_unknown_managarm_mlibc
+//@ [riscv64gc_unknown_managarm_mlibc] compile-flags: --target riscv64gc-unknown-managarm-mlibc
+//@ [riscv64gc_unknown_managarm_mlibc] needs-llvm-components: riscv
 //@ revisions: riscv64gc_unknown_netbsd
 //@ [riscv64gc_unknown_netbsd] compile-flags: --target riscv64gc-unknown-netbsd
 //@ [riscv64gc_unknown_netbsd] needs-llvm-components: riscv
@@ -649,6 +655,9 @@
 //@ revisions: x86_64_unknown_linux_none
 //@ [x86_64_unknown_linux_none] compile-flags: --target x86_64-unknown-linux-none
 //@ [x86_64_unknown_linux_none] needs-llvm-components: x86
+//@ revisions: x86_64_unknown_managarm_mlibc
+//@ [x86_64_unknown_managarm_mlibc] compile-flags: --target x86_64-unknown-managarm-mlibc
+//@ [x86_64_unknown_managarm_mlibc] needs-llvm-components: x86
 //@ revisions: x86_64_unknown_netbsd
 //@ [x86_64_unknown_netbsd] compile-flags: --target x86_64-unknown-netbsd
 //@ [x86_64_unknown_netbsd] needs-llvm-components: x86

tests/ui/attributes/auxiliary/used_pre_main_constructor.rs

@@ -20,6 +20,7 @@
         target_os = "nto",
         target_os = "openbsd",
         target_os = "fuchsia",
+        target_os = "managarm",
     ),
     link_section = ".init_array"
 )]

tests/ui/check-cfg/cfg-crate-features.stderr

@@ -24,7 +24,7 @@ warning: unexpected `cfg` condition value: `does_not_exist`
 LL | #![cfg(not(target(os = "does_not_exist")))]
    |                   ^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `redox`, `rtems`, `solaris`, `solid_asp3`, `teeos`, `trusty`, `tvos`, and `uefi` and 10 more
+   = note: expected values for `target_os` are: `aix`, `amdhsa`, `android`, `cuda`, `cygwin`, `dragonfly`, `emscripten`, `espidf`, `freebsd`, `fuchsia`, `haiku`, `hermit`, `horizon`, `hurd`, `illumos`, `ios`, `l4re`, `linux`, `lynxos178`, `macos`, `managarm`, `netbsd`, `none`, `nto`, `nuttx`, `openbsd`, `psp`, `psx`, `redox`, `rtems`, `solaris`, `solid_asp3`, `teeos`, `trusty`, and `tvos` and 11 more
    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration
    = note: `#[warn(unexpected_cfgs)]` on by default