diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 489b82adb84b9..bbfa9db150dde 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -1462,6 +1462,7 @@ pub const TIOCISPTMASTER: ::c_ulong = 0x20007455;
 pub const TIOCMODG: ::c_ulong = 0x40047403;
 pub const TIOCMODS: ::c_ulong = 0x80047404;
 pub const TIOCREMOTE: ::c_ulong = 0x80047469;
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
 
 // Constants used by "at" family of system calls.
 pub const AT_FDCWD: ::c_int = 0xFFFAFDCD; // invalid file descriptor
diff --git a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
index d240eb001ad5d..05fe64b5c0c8a 100644
--- a/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/aarch64.rs
@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
+pub type clock_t = i32;
 pub type wchar_t = u32;
 pub type time_t = i64;
 pub type suseconds_t = i64;
@@ -133,5 +134,8 @@ cfg_if! {
     }
 }
 
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 4096; // 1024 * 4
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/arm.rs b/src/unix/bsd/freebsdlike/freebsd/arm.rs
index 58cf6263310a6..1325b930902b0 100644
--- a/src/unix/bsd/freebsdlike/freebsd/arm.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/arm.rs
@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type c_long = i32;
 pub type c_ulong = u32;
+pub type clock_t = u32;
 pub type wchar_t = u32;
 pub type time_t = i64;
 pub type suseconds_t = i32;
@@ -50,5 +51,8 @@ cfg_if! {
 }
 
 pub(crate) const _ALIGNBYTES: usize = ::mem::size_of::<::c_int>() - 1;
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 4096; // 1024 * 4
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs b/src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs
index 118404e8b089b..e6cc1fad0b591 100644
--- a/src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/freebsd13/mod.rs
@@ -41,7 +41,10 @@ s! {
     }
 
     pub struct __c_anonymous_domainset {
-        _priv: [::uintptr_t; 4],
+        #[cfg(target_pointer_width = "64")]
+        _priv: [::c_ulong; 4],
+        #[cfg(target_pointer_width = "32")]
+        _priv: [::c_ulong; 8],
     }
 
     pub struct kinfo_proc {
diff --git a/src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs b/src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs
index e624dd7201b0a..1c58bb4b5afcf 100644
--- a/src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/freebsd14/mod.rs
@@ -41,7 +41,10 @@ s! {
     }
 
     pub struct __c_anonymous_domainset {
-        _priv: [::uintptr_t; 4],
+        #[cfg(target_pointer_width = "64")]
+        _priv: [::c_ulong; 4],
+        #[cfg(target_pointer_width = "32")]
+        _priv: [::c_ulong; 8],
     }
 
     pub struct kinfo_proc {
diff --git a/src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs b/src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs
index a299af7d5d53e..00ea22a041a7d 100644
--- a/src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/freebsd15/mod.rs
@@ -41,7 +41,10 @@ s! {
     }
 
     pub struct __c_anonymous_domainset {
-        _priv: [::uintptr_t; 4],
+        #[cfg(target_pointer_width = "64")]
+        _priv: [::c_ulong; 4],
+        #[cfg(target_pointer_width = "32")]
+        _priv: [::c_ulong; 8],
     }
 
     pub struct kinfo_proc {
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index fc01d8e5463b8..91f4879e3453c 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -1,5 +1,4 @@
 pub type fflags_t = u32;
-pub type clock_t = i32;
 
 pub type vm_prot_t = u_char;
 pub type kvaddr_t = u64;
@@ -1630,7 +1629,7 @@ s_no_extra_traits! {
         pub kf_flags: ::c_int,
         _kf_pad0: ::c_int,
         pub kf_offset: i64,
-        _priv: [::uintptr_t; 38], // FIXME if needed
+        _priv: [u8; 304],   // FIXME: this is really a giant union
         pub kf_status: u16,
         _kf_pad1: u16,
         _kf_ispare0: ::c_int,
@@ -3145,9 +3144,22 @@ pub const H4DISC: ::c_int = 0x7;
 
 pub const VM_TOTAL: ::c_int = 1;
 
-pub const BIOCSETFNR: ::c_ulong = 0x80104282;
+cfg_if! {
+    if #[cfg(target_pointer_width = "64")] {
+        pub const BIOCSETFNR: ::c_ulong = 0x80104282;
+    } else {
+        pub const BIOCSETFNR: ::c_ulong = 0x80084282;
+    }
+}
+
+cfg_if! {
+    if #[cfg(target_pointer_width = "64")] {
+        pub const FIODGNAME: ::c_ulong = 0x80106678;
+    } else {
+        pub const FIODGNAME: ::c_ulong = 0x80086678;
+    }
+}
 
-pub const FIODGNAME: ::c_ulong = 0x80106678;
 pub const FIONWRITE: ::c_ulong = 0x40046677;
 pub const FIONSPACE: ::c_ulong = 0x40046676;
 pub const FIOSEEKDATA: ::c_ulong = 0xc0086661;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
index 17d48d5c42cfc..9690cb13cd310 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc.rs
@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type c_long = i32;
 pub type c_ulong = u32;
+pub type clock_t = u32;
 pub type wchar_t = i32;
 pub type time_t = i64;
 pub type suseconds_t = i32;
@@ -69,5 +70,8 @@ cfg_if! {
 }
 
 pub(crate) const _ALIGNBYTES: usize = ::mem::size_of::<::c_int>() - 1;
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 2048; // 512 * 4
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
index c98fa3b027173..08e7ad12c9c9b 100644
--- a/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/powerpc64.rs
@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
+pub type clock_t = u32;
 pub type wchar_t = i32;
 pub type time_t = i64;
 pub type suseconds_t = i64;
@@ -69,5 +70,8 @@ cfg_if! {
 }
 
 pub(crate) const _ALIGNBYTES: usize = ::mem::size_of::<::c_long>() - 1;
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 2048; // 512 * 4
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
index c5ea8ee203a72..542c95b54453c 100644
--- a/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/riscv64.rs
@@ -1,6 +1,7 @@
 pub type c_char = u8;
 pub type c_long = i64;
 pub type c_ulong = u64;
+pub type clock_t = i32;
 pub type wchar_t = ::c_int;
 pub type time_t = i64;
 pub type suseconds_t = ::c_long;
@@ -141,5 +142,8 @@ cfg_if! {
     }
 }
 
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 4096; // 1024 * 4
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86.rs b/src/unix/bsd/freebsdlike/freebsd/x86.rs
index 71bdb88b9f2a1..8a2721e62d71b 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86.rs
@@ -1,12 +1,14 @@
 pub type c_char = i8;
 pub type c_long = i32;
 pub type c_ulong = u32;
+pub type clock_t = ::c_ulong;
 pub type wchar_t = i32;
 pub type time_t = i32;
 pub type suseconds_t = i32;
 pub type register_t = i32;
 
 s_no_extra_traits! {
+    #[repr(align(16))]
     pub struct mcontext_t {
         pub mc_onstack: register_t,
         pub mc_gs: register_t,
@@ -32,7 +34,7 @@ s_no_extra_traits! {
         pub mc_fpformat: ::c_int,
         pub mc_ownedfp: ::c_int,
         pub mc_flags: register_t,
-        pub mc_fpstate: [[::c_int; 32]; 4],
+        pub mc_fpstate: [::c_int; 128],
         pub mc_fsbase: register_t,
         pub mc_gsbase: register_t,
         pub mc_xfpustate: register_t,
@@ -155,4 +157,7 @@ cfg_if! {
 
 pub const MINSIGSTKSZ: ::size_t = 2048; // 512 * 4
 
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8008426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4008426e;
 pub const KINFO_FILE_SIZE: ::c_int = 1392;
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40087459;
diff --git a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
index aa33345f3113f..4ff9469086cb6 100644
--- a/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/x86_64/mod.rs
@@ -1,6 +1,7 @@
 pub type c_char = i8;
 pub type c_long = i64;
 pub type c_ulong = u64;
+pub type clock_t = i32;
 pub type wchar_t = i32;
 pub type time_t = i64;
 pub type suseconds_t = i64;
@@ -220,6 +221,9 @@ cfg_if! {
 
 pub(crate) const _ALIGNBYTES: usize = ::mem::size_of::<::c_long>() - 1;
 
+pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
+pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
+
 pub const MAP_32BIT: ::c_int = 0x00080000;
 pub const MINSIGSTKSZ: ::size_t = 2048; // 512 * 4
 
@@ -236,5 +240,7 @@ pub const _MC_FPOWNED_PCB: c_long = 0x20002;
 
 pub const KINFO_FILE_SIZE: ::c_int = 1392;
 
+pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
+
 mod align;
 pub use self::align::*;
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index af0632882cdbc..0d049272ab2ae 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -1224,7 +1224,6 @@ pub const TIOCGETD: ::c_ulong = 0x4004741a;
 pub const TIOCSETD: ::c_ulong = 0x8004741b;
 pub const TIOCGDRAINWAIT: ::c_ulong = 0x40047456;
 pub const TIOCSDRAINWAIT: ::c_ulong = 0x80047457;
-pub const TIOCTIMESTAMP: ::c_ulong = 0x40107459;
 pub const TIOCMGDTRWAIT: ::c_ulong = 0x4004745a;
 pub const TIOCMSDTRWAIT: ::c_ulong = 0x8004745b;
 pub const TIOCDRAIN: ::c_ulong = 0x2000745e;
@@ -1279,10 +1278,15 @@ pub const BIOCSRSIG: ::c_ulong = 0x80044273;
 pub const BIOCSDLT: ::c_ulong = 0x80044278;
 pub const BIOCGSEESENT: ::c_ulong = 0x40044276;
 pub const BIOCSSEESENT: ::c_ulong = 0x80044277;
-pub const BIOCSETF: ::c_ulong = 0x80104267;
-pub const BIOCGDLTLIST: ::c_ulong = 0xc0104279;
-pub const BIOCSRTIMEOUT: ::c_ulong = 0x8010426d;
-pub const BIOCGRTIMEOUT: ::c_ulong = 0x4010426e;
+cfg_if! {
+    if #[cfg(target_pointer_width = "64")] {
+        pub const BIOCGDLTLIST: ::c_ulong = 0xc0104279;
+        pub const BIOCSETF: ::c_ulong = 0x80104267;
+    } else if #[cfg(target_pointer_width = "32")] {
+        pub const BIOCGDLTLIST: ::c_ulong = 0xc0084279;
+        pub const BIOCSETF: ::c_ulong = 0x80084267;
+    }
+}
 
 pub const FIODTYPE: ::c_ulong = 0x4004667a;
 pub const FIOGETLBA: ::c_ulong = 0x40046679;