Rollup merge of rust-lang#81455 - Amanieu:aarch64_ilp32, r=sanxiyn

Add AArch64 big-endian and ILP32 targets

This PR adds 3 new AArch64 targets:
- `aarch64_be-unknown-linux-gnu`
- `aarch64-unknown-linux-gnu_ilp32`
- `aarch64_be-unknown-linux-gnu_ilp32`

It also fixes some ABI issues on big-endian ARM and AArch64.

Author: jackh726

std/src/os/linux/raw.rs

@@ -247,17 +247,17 @@ mod arch {
     use crate::os::raw::{c_int, c_long};
 
     #[stable(feature = "raw_ext", since = "1.1.0")]
-    pub type blkcnt_t = u64;
+    pub type blkcnt_t = i64;
     #[stable(feature = "raw_ext", since = "1.1.0")]
-    pub type blksize_t = u64;
+    pub type blksize_t = i32;
     #[stable(feature = "raw_ext", since = "1.1.0")]
     pub type ino_t = u64;
     #[stable(feature = "raw_ext", since = "1.1.0")]
-    pub type nlink_t = u64;
+    pub type nlink_t = u32;
     #[stable(feature = "raw_ext", since = "1.1.0")]
-    pub type off_t = u64;
+    pub type off_t = i64;
     #[stable(feature = "raw_ext", since = "1.1.0")]
-    pub type time_t = i64;
+    pub type time_t = c_long;
 
     #[repr(C)]
     #[derive(Clone)]
@@ -288,15 +288,15 @@ mod arch {
         #[stable(feature = "raw_ext", since = "1.1.0")]
         pub st_blocks: i64,
         #[stable(feature = "raw_ext", since = "1.1.0")]
-        pub st_atime: i64,
+        pub st_atime: time_t,
         #[stable(feature = "raw_ext", since = "1.1.0")]
         pub st_atime_nsec: c_long,
         #[stable(feature = "raw_ext", since = "1.1.0")]
-        pub st_mtime: i64,
+        pub st_mtime: time_t,
         #[stable(feature = "raw_ext", since = "1.1.0")]
         pub st_mtime_nsec: c_long,
         #[stable(feature = "raw_ext", since = "1.1.0")]
-        pub st_ctime: i64,
+        pub st_ctime: time_t,
         #[stable(feature = "raw_ext", since = "1.1.0")]
         pub st_ctime_nsec: c_long,
         #[stable(feature = "raw_ext", since = "1.1.0")]

unwind/src/libunwind.rs

@@ -36,9 +36,12 @@ pub const unwinder_private_data_size: usize = 20;
 #[cfg(all(target_arch = "arm", target_os = "ios"))]
 pub const unwinder_private_data_size: usize = 5;
 
-#[cfg(target_arch = "aarch64")]
+#[cfg(all(target_arch = "aarch64", target_pointer_width = "64"))]
 pub const unwinder_private_data_size: usize = 2;
 
+#[cfg(all(target_arch = "aarch64", target_pointer_width = "32"))]
+pub const unwinder_private_data_size: usize = 5;
+
 #[cfg(target_arch = "mips")]
 pub const unwinder_private_data_size: usize = 2;