s390x linux_raw support (#1179)

Author: taiki-e

.github/workflows/main.yml

@@ -510,7 +510,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -549,6 +549,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: stable
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: stable
@@ -640,7 +649,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        build: [powerpc64le-linux]
+        build: [powerpc64le-linux, s390x-linux]
         include:
           - build: powerpc64le-linux
             os: ubuntu-latest
@@ -651,11 +660,21 @@ jobs:
             qemu: qemu-ppc64le
             qemu_args: -L /usr/powerpc64le-linux-gnu
             qemu_target: ppc64le-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
     env:
       # -D warnings is commented out in our install-rust action; re-add it here.
       RUSTFLAGS: --cfg rustix_use_experimental_asm -D warnings -D elided-lifetimes-in-paths
       RUSTDOCFLAGS: --cfg rustix_use_experimental_asm
       CARGO_TARGET_POWERPC64LE_UNKNOWN_LINUX_GNU_RUSTFLAGS: --cfg rustix_use_experimental_asm
+      CARGO_TARGET_S390X_UNKNOWN_LINUX_GNU_RUSTFLAGS: --cfg rustix_use_experimental_asm
       QEMU_BUILD_VERSION: 8.1.2
     steps:
     - uses: actions/checkout@v4

.github/workflows/test-users.yml

@@ -12,7 +12,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -69,6 +69,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -177,7 +186,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -234,6 +243,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -324,7 +342,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -381,6 +399,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -503,7 +530,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -560,6 +587,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -647,7 +683,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -702,6 +738,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -789,7 +834,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -844,6 +889,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -931,7 +985,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -986,6 +1040,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -1073,7 +1136,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -1128,6 +1191,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -1215,7 +1287,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -1272,6 +1344,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -1362,7 +1443,7 @@ jobs:
       QEMU_BUILD_VERSION: 7.0.0
     strategy:
       matrix:
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux, macos-latest]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -1419,6 +1500,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly
@@ -1576,7 +1666,7 @@ jobs:
     strategy:
       matrix:
         # cap-std-ext only builds on Linux at the moment.
-        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, mipsel-linux, mips64el-linux, arm-linux]
+        build: [ubuntu, i686-linux, aarch64-linux, powerpc64le-linux, riscv64-linux, s390x-linux, mipsel-linux, mips64el-linux, arm-linux]
         include:
           - build: ubuntu
             os: ubuntu-latest
@@ -1633,6 +1723,15 @@ jobs:
             qemu: qemu-riscv64
             qemu_args: -L /usr/riscv64-linux-gnu
             qemu_target: riscv64-linux-user
+          - build: s390x-linux
+            os: ubuntu-latest
+            rust: nightly
+            target: s390x-unknown-linux-gnu
+            gcc_package: gcc-s390x-linux-gnu
+            gcc: s390x-linux-gnu-gcc
+            qemu: qemu-s390x
+            qemu_args: -L /usr/s390x-linux-gnu
+            qemu_target: s390x-linux-user
           - build: arm-linux
             os: ubuntu-latest
             rust: nightly

Cargo.toml

@@ -35,7 +35,7 @@ once_cell = { version = "1.5.2", optional = true }
 # addition to the libc backend. The linux_raw backend is used by default. The
 # libc backend can be selected via adding `--cfg=rustix_use_libc` to
 # `RUSTFLAGS` or enabling the `use-libc` cargo feature.
-[target.'cfg(all(not(rustix_use_libc), not(miri), target_os = "linux", target_endian = "little", any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64"))))'.dependencies]
+[target.'cfg(all(not(rustix_use_libc), not(miri), target_os = "linux", any(target_endian = "little", target_arch = "s390x"), any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "s390x"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64"))))'.dependencies]
 linux-raw-sys = { version = "0.4.14", default-features = false, features = ["general", "errno", "ioctl", "no_std", "elf"] }
 libc_errno = { package = "errno", version = "0.3.8", default-features = false, optional = true }
 libc = { version = "0.2.156", default-features = false, optional = true }
@@ -44,15 +44,15 @@ libc = { version = "0.2.156", default-features = false, optional = true }
 #
 # On all other Unix-family platforms, and under Miri, we always use the libc
 # backend, so enable its dependencies unconditionally.
-[target.'cfg(all(not(windows), any(rustix_use_libc, miri, not(all(target_os = "linux", target_endian = "little", any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64")))))))'.dependencies]
+[target.'cfg(all(not(windows), any(rustix_use_libc, miri, not(all(target_os = "linux", any(target_endian = "little", target_arch = "s390x"), any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "s390x"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64")))))))'.dependencies]
 libc_errno = { package = "errno", version = "0.3.8", default-features = false }
 libc = { version = "0.2.156", default-features = false }
 
 # Additional dependencies for Linux with the libc backend:
 #
 # Some syscalls do not have libc wrappers, such as in `io_uring`. For these,
 # the libc backend uses the linux-raw-sys ABI and `libc::syscall`.
-[target.'cfg(all(any(target_os = "android", target_os = "linux"), any(rustix_use_libc, miri, not(all(target_os = "linux", target_endian = "little", any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64")))))))'.dependencies]
+[target.'cfg(all(any(target_os = "android", target_os = "linux"), any(rustix_use_libc, miri, not(all(target_os = "linux", any(target_endian = "little", target_arch = "s390x"), any(target_arch = "arm", all(target_arch = "aarch64", target_pointer_width = "64"), target_arch = "riscv64", all(rustix_use_experimental_asm, target_arch = "powerpc64"), all(rustix_use_experimental_asm, target_arch = "s390x"), all(rustix_use_experimental_asm, target_arch = "mips"), all(rustix_use_experimental_asm, target_arch = "mips32r6"), all(rustix_use_experimental_asm, target_arch = "mips64"), all(rustix_use_experimental_asm, target_arch = "mips64r6"), target_arch = "x86", all(target_arch = "x86_64", target_pointer_width = "64")))))))'.dependencies]
 linux-raw-sys = { version = "0.4.14", default-features = false, features = ["general", "ioctl", "no_std"] }
 
 # For the libc backend on Windows, use the Winsock API in windows-sys.

build.rs

@@ -95,7 +95,8 @@ fn main() {
         || !inline_asm_name_present
         || is_unsupported_abi
         || miri
-        || ((arch == "powerpc64" || arch.starts_with("mips")) && !rustix_use_experimental_asm);
+        || ((arch == "powerpc64" || arch == "s390x" || arch.starts_with("mips"))
+            && !rustix_use_experimental_asm);
     if libc {
         // Use the libc backend.
         use_feature("libc");

src/backend/linux_raw/arch/mod.rs

@@ -32,6 +32,7 @@
 #[cfg_attr(target_arch = "mips64r6", path = "mips64r6.rs")]
 #[cfg_attr(target_arch = "powerpc64", path = "powerpc64.rs")]
 #[cfg_attr(target_arch = "riscv64", path = "riscv64.rs")]
+#[cfg_attr(target_arch = "s390x", path = "s390x.rs")]
 #[cfg_attr(target_arch = "x86", path = "x86.rs")]
 #[cfg_attr(target_arch = "x86_64", path = "x86_64.rs")]
 pub(in crate::backend) mod asm;
@@ -47,6 +48,7 @@ pub(in crate::backend) mod asm;
     target_arch = "mips64r6",
     target_arch = "powerpc64",
     target_arch = "riscv64",
+    target_arch = "s390x",
     target_arch = "x86_64",
 ))]
 pub(in crate::backend) use self::asm as choose;