add a csky-unknown-linux-gnuabiv2 target

Author: Dirreke

core/src/ffi/mod.rs

@@ -110,7 +110,8 @@ mod c_char_definition {
                     target_arch = "powerpc64",
                     target_arch = "s390x",
                     target_arch = "riscv64",
-                    target_arch = "riscv32"
+                    target_arch = "riscv32",
+                    target_arch = "csky"
                 )
             ),
             all(target_os = "android", any(target_arch = "aarch64", target_arch = "arm")),

std/src/env.rs

@@ -894,6 +894,7 @@ pub mod consts {
     /// - aarch64
     /// - loongarch64
     /// - m68k
+    /// - csky
     /// - mips
     /// - mips64
     /// - powerpc

std/src/os/l4re/raw.rs

@@ -27,6 +27,7 @@ pub use self::arch::{blkcnt_t, blksize_t, ino_t, nlink_t, off_t, stat, time_t};
 #[cfg(any(
     target_arch = "x86",
     target_arch = "m68k",
+    target_arch = "csky",
     target_arch = "powerpc",
     target_arch = "sparc",
     target_arch = "arm",

std/src/os/linux/raw.rs

@@ -27,6 +27,7 @@ pub use self::arch::{blkcnt_t, blksize_t, ino_t, nlink_t, off_t, stat, time_t};
 #[cfg(any(
     target_arch = "x86",
     target_arch = "m68k",
+    target_arch = "csky",
     target_arch = "powerpc",
     target_arch = "sparc",
     target_arch = "arm",

std/src/sys/common/alloc.rs

@@ -8,6 +8,7 @@ use crate::ptr;
     target_arch = "x86",
     target_arch = "arm",
     target_arch = "m68k",
+    target_arch = "csky",
     target_arch = "mips",
     target_arch = "mips32r6",
     target_arch = "powerpc",

std/src/sys/personality/gcc.rs

@@ -67,6 +67,9 @@ const UNWIND_DATA_REG: (i32, i32) = (0, 1); // D0, D1
 ))]
 const UNWIND_DATA_REG: (i32, i32) = (4, 5); // A0, A1
 
+#[cfg(target_arch = "csky")]
+const UNWIND_DATA_REG: (i32, i32) = (0, 1); // R0, R1
+
 #[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
 const UNWIND_DATA_REG: (i32, i32) = (3, 4); // R3, R4 / X3, X4
 

unwind/src/libunwind.rs

@@ -54,6 +54,9 @@ pub const unwinder_private_data_size: usize = 2;
 #[cfg(any(target_arch = "mips", target_arch = "mips32r6"))]
 pub const unwinder_private_data_size: usize = 2;
 
+#[cfg(target_arch = "csky")]
+pub const unwinder_private_data_size: usize = 2;
+
 #[cfg(any(target_arch = "mips64", target_arch = "mips64r6"))]
 pub const unwinder_private_data_size: usize = 2;