linux: riscv32: Add support for the 64-bit time_t RV32 glibc port

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

src/unix/linux_like/linux/align.rs

@@ -8,7 +8,8 @@ macro_rules! expand_align {
                            target_arch = "s390x",
                            target_arch = "sparc64",
                            target_arch = "aarch64",
-                           target_arch = "riscv64"),
+                           target_arch = "riscv64",
+                           target_arch = "riscv32"),
                        repr(align(4)))]
             #[cfg_attr(not(any(target_pointer_width = "32",
                                target_arch = "x86_64",
@@ -17,7 +18,8 @@ macro_rules! expand_align {
                                target_arch = "s390x",
                                target_arch = "sparc64",
                                target_arch = "aarch64",
-                               target_arch = "riscv64")),
+                               target_arch = "riscv64",
+                               target_arch = "riscv32")),
                        repr(align(8)))]
             pub struct pthread_mutexattr_t {
                 #[doc(hidden)]

src/unix/linux_like/linux/gnu/b32/mod.rs

@@ -278,6 +278,9 @@ cfg_if! {
     } else if #[cfg(target_arch = "sparc")] {
         mod sparc;
         pub use self::sparc::*;
+    } else if #[cfg(any(target_arch = "riscv32"))] {
+        mod riscv32;
+        pub use self::riscv32::*;
     } else {
         // Unknown target_arch
     }

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

@@ -1213,7 +1213,8 @@ cfg_if! {
         target_arch = "x86",
         target_arch = "x86_64",
         target_arch = "s390x",
-        target_arch = "riscv64"
+        target_arch = "riscv64",
+        target_arch = "riscv32"
     ))] {
         pub const PTHREAD_STACK_MIN: ::size_t = 16384;
     } else if #[cfg(any(
@@ -1453,7 +1454,8 @@ cfg_if! {
                  target_arch = "arm",
                  target_arch = "mips",
                  target_arch = "powerpc",
-                 target_arch = "sparc"))] {
+                 target_arch = "sparc",
+                 target_arch = "riscv32"))] {
         mod b32;
         pub use self::b32::*;
     } else if #[cfg(any(target_arch = "x86_64",

src/unix/linux_like/linux/no_align.rs

@@ -8,6 +8,7 @@ macro_rules! expand_align {
                           target_arch = "s390x",
                           target_arch = "sparc64",
                           target_arch = "riscv64",
+                          target_arch = "riscv32",
                           all(target_arch = "aarch64",
                               target_env = "musl")))]
                 __align: [::c_int; 0],
@@ -17,6 +18,7 @@ macro_rules! expand_align {
                               target_arch = "s390x",
                               target_arch = "sparc64",
                               target_arch = "riscv64",
+                              target_arch = "riscv32",
                               all(target_arch = "aarch64",
                                   target_env = "musl"))))]
                 __align: [::c_long; 0],