Merge pull request #1684 from JohnTitor/riscv64

Add `riscv64gc-unknown-linux-gnu` image

Author: JohnTitor

ci/azure.yml

@@ -72,6 +72,8 @@ jobs:
           TARGET: powerpc64le-unknown-linux-gnu
         s390x-unknown-linux-gnu:
           TARGET: s390x-unknown-linux-gnu
+        riscv64gc-unknown-linux-gnu:
+          TARGET: riscv64gc-unknown-linux-gnu
         #wasm32-wasi
         #  TARGET: wasm32-wasi
         sparc64-unknown-linux-gnu:

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

@@ -0,0 +1,12 @@
+FROM ubuntu:20.04
+
+RUN apt-get update && apt-get install -y --no-install-recommends \
+        gcc libc6-dev qemu-user ca-certificates \
+        gcc-riscv64-linux-gnu libc6-dev-riscv64-cross \
+        qemu-system-riscv64 linux-headers-generic
+
+ENV CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_GNU_LINKER=riscv64-linux-gnu-gcc \
+    CARGO_TARGET_RISCV64GC_UNKNOWN_LINUX_GNU_RUNNER="qemu-riscv64 -L /usr/riscv64-linux-gnu" \
+    CC_riscv64gc_unknown_linux_gnu=riscv64-linux-gnu-gcc \
+    CFLAGS_riscv64gc_unknown_linux_gnu="-mabi=lp64d -fPIC" \
+    PATH=$PATH:/rust/bin

libc-test/build.rs

@@ -2231,6 +2231,7 @@ fn test_linux(target: &str) {
     let aarch64_musl = target.contains("aarch64") && musl;
     let gnuabihf = target.contains("gnueabihf");
     let x86_64_gnux32 = target.contains("gnux32") && x86_64;
+    let riscv64 = target.contains("riscv64");
 
     let mut cfg = ctest_cfg();
     cfg.define("_GNU_SOURCE", None);
@@ -2657,7 +2658,7 @@ fn test_linux(target: &str) {
         (struct_ == "timex" && field.starts_with("__unused")) ||
         // FIXME: It now takes mode_t since glibc 2.31 on some targets.
         (struct_ == "ipc_perm" && field == "mode"
-            && ((x86_64 || i686 || arm) && gnu || x86_64_gnux32)
+            && ((x86_64 || i686 || arm || riscv64) && gnu || x86_64_gnux32)
         )
     });
 

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

@@ -17,11 +17,6 @@ s! {
         __size: [::c_ulong; 7],
     }
 
-    pub struct timespec {
-        pub tv_sec: ::time_t,
-        pub tv_nsec: ::c_long,
-    }
-
     pub struct stat {
         pub st_dev: ::dev_t,
         pub st_ino: ::ino_t,
@@ -41,7 +36,7 @@ s! {
         pub st_mtime_nsec: ::c_long,
         pub st_ctime: ::time_t,
         pub st_ctime_nsec: ::c_long,
-        pub __unused: [::c_int; 2usize],
+        __unused: [::c_int; 2usize],
     }
 
     pub struct stat64 {
@@ -63,7 +58,7 @@ s! {
         pub st_mtime_nsec: ::c_long,
         pub st_ctime: ::time_t,
         pub st_ctime_nsec: ::c_long,
-        pub __unused: [::c_int; 2],
+        __unused: [::c_int; 2],
     }
 
     pub struct statfs {
@@ -161,11 +156,11 @@ s! {
         pub cuid: ::uid_t,
         pub cgid: ::gid_t,
         pub mode: ::c_ushort,
-        pub __pad1: ::c_ushort,
+        __pad1: ::c_ushort,
         pub __seq: ::c_ushort,
-        pub __pad2: ::c_ushort,
-        pub __unused1: ::c_ulong,
-        pub __unused2: ::c_ulong,
+        __pad2: ::c_ushort,
+        __unused1: ::c_ulong,
+        __unused2: ::c_ulong,
     }
 
     pub struct shmid_ds {
@@ -177,8 +172,8 @@ s! {
         pub shm_cpid: ::pid_t,
         pub shm_lpid: ::pid_t,
         pub shm_nattch: ::shmatt_t,
-        pub __unused5: ::c_ulong,
-        pub __unused6: ::c_ulong,
+        __unused5: ::c_ulong,
+        __unused6: ::c_ulong,
     }
 
     pub struct flock {