ci: Test riscv64gc-unknown-linux-musl

.github/workflows/ci.yaml

@@ -228,6 +228,10 @@ jobs:
             env: { TEST_MUSL_V1_2: 1 }
             artifact-tag: new-musl
           - target: riscv64gc-unknown-linux-gnu
+          - target: riscv64gc-unknown-linux-musl
+          - target: riscv64gc-unknown-linux-musl
+            env: { TEST_MUSL_V1_2: 1 }
+            artifact-tag: new-musl
           - target: s390x-unknown-linux-gnu
           - target: sparc64-unknown-linux-gnu
           - target: wasm32-unknown-emscripten

Cargo.toml

@@ -52,6 +52,7 @@ targets = [
     "powerpc64le-unknown-linux-gnu",
     "powerpc64le-unknown-linux-musl",
     "riscv64gc-unknown-linux-gnu",
+    "riscv64gc-unknown-linux-musl",
     "s390x-unknown-linux-gnu",
     "sparcv9-sun-solaris",
     "x86_64-apple-darwin",
@@ -85,7 +86,6 @@ targets = [
     "i686-unknown-freebsd",
     "i686-unknown-linux-musl",
     "nvptx64-nvidia-cuda",
-    "riscv64gc-unknown-linux-musl",
     "sparc64-unknown-linux-gnu",
     "thumbv7neon-linux-androideabi",
     "thumbv7neon-unknown-linux-gnueabihf",

ci/docker/riscv64gc-unknown-linux-musl/Dockerfile

@@ -0,0 +1,24 @@
+FROM ubuntu:26.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    curl \
+    gcc \
+    gcc-riscv64-linux-gnu \
+    git \
+    libc6-dev \
+    make \
+    patch \
+    rsync \
+    qemu-user \
+    xz-utils
+
+ARG MUSL_VERSION
+COPY . /ci
+RUN ci/install-musl.sh riscv64 "$MUSL_VERSION"
+
+ENV PATH=$PATH:/musl-riscv64/bin:/rust/bin \
+    CC_riscv64gc_unknown_linux_musl=musl-gcc \
+    CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_MUSL_LINKER=musl-gcc \
+    CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_MUSL_RUNNER="qemu-riscv64 -L /musl-riscv64" \
+    EXTRA_RUSTFLAGS="-Ctarget-feature=+crt-static -Clink-args=-L/musl-riscv64/lib"

ci/install-musl.sh

@@ -107,6 +107,13 @@ case ${1} in
             ./configure --prefix="/musl-${musl_arch}" --enable-wrapper=yes
         make install -j4
         ;;
+    riscv64)
+        musl_arch=riscv64
+        kernel_arch=riscv
+        CC=riscv64-linux-gnu-gcc \
+            ./configure --prefix="/musl-${musl_arch}" --enable-wrapper=yes
+        make install -j4
+        ;;
     *)
         echo "Unknown target arch: \"${1}\""
         exit 1

ci/verify-build.py

@@ -108,6 +108,7 @@ class TargetResult:
     Target("powerpc64le-unknown-linux-gnu"),
     Target("powerpc64le-unknown-linux-musl", min_toolchain=Toolchain.STABLE),
     Target("riscv64gc-unknown-linux-gnu"),
+    Target("riscv64gc-unknown-linux-musl", min_toolchain=Toolchain.STABLE),
     Target("s390x-unknown-linux-gnu"),
     Target("sparcv9-sun-solaris"),
     Target("x86_64-apple-darwin"),
@@ -141,7 +142,6 @@ class TargetResult:
     Target("i686-unknown-freebsd"),
     Target("i686-unknown-linux-musl"),
     Target("nvptx64-nvidia-cuda", min_toolchain=Toolchain.STABLE),
-    Target("riscv64gc-unknown-linux-musl", min_toolchain=Toolchain.STABLE),
     Target("sparc64-unknown-linux-gnu"),
     Target("thumbv7neon-linux-androideabi", min_toolchain=Toolchain.STABLE),
     Target("thumbv7neon-unknown-linux-gnueabihf", min_toolchain=Toolchain.STABLE),

src/unix/linux_like/linux/musl/b64/riscv64/mod.rs

@@ -52,12 +52,10 @@ s! {
         pub gid: crate::gid_t,
         pub cuid: crate::uid_t,
         pub cgid: crate::gid_t,
-        pub mode: c_ushort,
-        __pad1: Padding<c_ushort>,
-        pub __seq: c_ushort,
-        __pad2: Padding<c_ushort>,
-        __unused1: Padding<c_ulong>,
-        __unused2: Padding<c_ulong>,
+        pub mode: crate::mode_t,
+        pub __ipc_perm_seq: c_int,
+        __pad1: Padding<c_long>,
+        __pad2: Padding<c_long>,
     }
 
     #[repr(align(8))]
@@ -78,7 +76,7 @@ s! {
 
 s_no_extra_traits! {
     pub struct ucontext_t {
-        pub __uc_flags: c_ulong,
+        pub uc_flags: c_ulong,
         pub uc_link: *mut ucontext_t,
         pub uc_stack: crate::stack_t,
         pub uc_sigmask: crate::sigset_t,
@@ -414,6 +412,7 @@ pub const SYS_mount_setattr: c_long = 442;
 pub const SYS_landlock_create_ruleset: c_long = 444;
 pub const SYS_landlock_add_rule: c_long = 445;
 pub const SYS_landlock_restrict_self: c_long = 446;
+pub const SYS_futex_waitv: c_long = 449;
 
 pub const O_APPEND: c_int = 1024;
 pub const O_DIRECT: c_int = 0x4000;
@@ -649,12 +648,3 @@ pub const TOSTOP: crate::tcflag_t = 0x00000100;
 pub const FLUSHO: crate::tcflag_t = 0x00001000;
 
 pub const NGREG: usize = 32;
-pub const REG_PC: usize = 0;
-pub const REG_RA: usize = 1;
-pub const REG_SP: usize = 2;
-pub const REG_TP: usize = 4;
-pub const REG_S0: usize = 8;
-pub const REG_S1: usize = 9;
-pub const REG_A0: usize = 10;
-pub const REG_S2: usize = 18;
-pub const REG_NARGS: usize = 8;