From 157ac25cc09ac65fdcadf02ffd5e797841a68cb3 Mon Sep 17 00:00:00 2001
From: Dan Johnson <computerdruid@google.com>
Date: Tue, 18 Apr 2023 14:20:25 -0700
Subject: fuchsia: add definitions for riscv64

---
 src/fuchsia/aarch64.rs |  1 +
 src/fuchsia/mod.rs     |  3 +++
 src/fuchsia/riscv64.rs | 44 ++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 src/fuchsia/riscv64.rs

diff --git a/src/fuchsia/aarch64.rs b/src/fuchsia/aarch64.rs
index 259893c0fa..33e3934d66 100644
--- a/src/fuchsia/aarch64.rs
+++ b/src/fuchsia/aarch64.rs
@@ -62,5 +62,6 @@ s! {
     }
 }
 
+// From https://cs.opensource.google/fuchsia/fuchsia/+/main:zircon/third_party/ulib/musl/include/bits/signal.h;l=20-21;drc=0827b18ab9540c46f8037f407d17ea15a79e9ba7
 pub const MINSIGSTKSZ: ::size_t = 6144;
 pub const SIGSTKSZ: ::size_t = 12288;
diff --git a/src/fuchsia/mod.rs b/src/fuchsia/mod.rs
index ea1ae466b2..6b12185413 100644
--- a/src/fuchsia/mod.rs
+++ b/src/fuchsia/mod.rs
@@ -4260,6 +4260,9 @@ cfg_if! {
     } else if #[cfg(any(target_arch = "x86_64"))] {
         mod x86_64;
         pub use self::x86_64::*;
+    } else if #[cfg(any(target_arch = "riscv64"))] {
+        mod riscv64;
+        pub use self::riscv64::*;
     } else {
         // Unknown target_arch
     }
diff --git a/src/fuchsia/riscv64.rs b/src/fuchsia/riscv64.rs
new file mode 100644
index 0000000000..de2b7197d7
--- /dev/null
+++ b/src/fuchsia/riscv64.rs
@@ -0,0 +1,44 @@
+// From psABI Calling Convention for RV64
+pub type c_char = u8;
+pub type __u64 = ::c_ulonglong;
+pub type wchar_t = i32;
+
+pub type nlink_t = ::c_ulong;
+pub type blksize_t = ::c_long;
+
+pub type stat64 = stat;
+s! {
+    pub struct stat {
+        pub st_dev: ::dev_t,
+        pub st_ino: ::ino_t,
+        pub st_nlink: ::nlink_t,
+        pub st_mode: ::mode_t,
+        pub st_uid: ::uid_t,
+        pub st_gid: ::gid_t,
+        __pad0: ::c_int,
+        pub st_rdev: ::dev_t,
+        pub st_size: ::off_t,
+        pub st_blksize: ::blksize_t,
+        pub st_blocks: ::blkcnt_t,
+        pub st_atime: ::time_t,
+        pub st_atime_nsec: ::c_long,
+        pub st_mtime: ::time_t,
+        pub st_mtime_nsec: ::c_long,
+        pub st_ctime: ::time_t,
+        pub st_ctime_nsec: ::c_long,
+        __unused: [::c_long; 3],
+    }
+
+    // Not actually used, IPC calls just return ENOSYS
+    pub struct ipc_perm {
+        pub __ipc_perm_key: ::key_t,
+        pub uid: ::uid_t,
+        pub gid: ::gid_t,
+        pub cuid: ::uid_t,
+        pub cgid: ::gid_t,
+        pub mode: ::mode_t,
+        pub __seq: ::c_ushort,
+        __unused1: ::c_ulong,
+        __unused2: ::c_ulong,
+    }
+}
-- 
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