freebsd i686 add ucontext/mcontext

close #3196.

src/unix/bsd/freebsdlike/freebsd/x86.rs

@@ -6,6 +6,41 @@ pub type time_t = i32;
 pub type suseconds_t = i32;
 pub type register_t = i32;
 
+s_no_extra_traits! {
+    pub struct mcontext_t {
+        pub mc_onstack: register_t,
+        pub mc_gs: register_t,
+        pub mc_fs: register_t,
+        pub mc_es: register_t,
+        pub mc_ds: register_t,
+        pub mc_edi: register_t,
+        pub mc_esi: register_t,
+        pub mc_ebp: register_t,
+        pub mc_isp: register_t,
+        pub mc_ebx: register_t,
+        pub mc_edx: register_t,
+        pub mc_ecx: register_t,
+        pub mc_eax: register_t,
+        pub mc_trapno: register_t,
+        pub mc_err: register_t,
+        pub mc_eip: register_t,
+        pub mc_cs: register_t,
+        pub mc_eflags: register_t,
+        pub mc_esp: register_t,
+        pub mc_ss: register_t,
+        pub mc_len: ::c_int,
+        pub mc_fpformat: ::c_int,
+        pub mc_ownedfp: ::c_int,
+        pub mc_flags: register_t,
+        pub mc_fpstate: [[::c_int; 32]; 4],
+        pub mc_fsbase: register_t,
+        pub mc_gsbase: register_t,
+        pub mc_xfpustate: register_t,
+        pub mc_xfpustate_len: register_t,
+        pub mc_spare2: [::c_int; 4],
+    }
+}
+
 s! {
     pub struct stat {
         pub st_dev: ::dev_t,
@@ -31,6 +66,15 @@ s! {
         pub st_birthtime_nsec: ::c_long,
         __unused: [u8; 8],
     }
+
+    pub struct ucontext_t {
+        pub uc_sigmask: ::sigset_t,
+        pub uc_mcontext: ::mcontext_t,
+        pub uc_link: *mut ::ucontext_t,
+        pub uc_stack: ::stack_t,
+        pub uc_flags: ::c_int,
+        __spare__: [::c_int; 4],
+    }
 }
 
 // should be pub(crate), but that requires Rust 1.18.0
@@ -43,4 +87,115 @@ cfg_if! {
         pub const _ALIGNBYTES: usize = 4 - 1;
     }
 }
+
+cfg_if! {
+    if #[cfg(feature = "extra_traits")] {
+        impl PartialEq for mcontext_t {
+            fn eq(&self, other: &mcontext_t) -> bool {
+                self.mc_onstack == other.mc_onstack &&
+                self.mc_gs == other.mc_gs &&
+                self.mc_fs == other.mc_fs &&
+                self.mc_es == other.mc_es &&
+                self.mc_ds == other.mc_ds &&
+                self.mc_edi == other.mc_edi &&
+                self.mc_esi == other.mc_esi &&
+                self.mc_ebp == other.mc_ebp &&
+                self.mc_isp == other.mc_isp &&
+                self.mc_ebx == other.mc_ebx &&
+                self.mc_edx == other.mc_edx &&
+                self.mc_ecx == other.mc_ecx &&
+                self.mc_eax == other.mc_eax &&
+                self.mc_trapno == other.mc_trapno &&
+                self.mc_err == other.mc_err &&
+                self.mc_eip == other.mc_eip &&
+                self.mc_cs == other.mc_cs &&
+                self.mc_eflags == other.mc_eflags &&
+                self.mc_esp == other.mc_esp &&
+                self.mc_ss == other.mc_ss &&
+                self.mc_len == other.mc_len &&
+                self.mc_fpformat == other.mc_fpformat &&
+                self.mc_ownedfp == other.mc_ownedfp &&
+                self.mc_flags == other.mc_flags &&
+                self.mc_fpstate.iter().zip(other.mc_fpstate.iter()).all(|(a, b)| a == b) &&
+                self.mc_fsbase == other.mc_fsbase &&
+                self.mc_gsbase == other.mc_gsbase &&
+                self.mc_xfpustate == other.mc_xfpustate &&
+                self.mc_xfpustate_len == other.mc_xfpustate_len &&
+                self.mc_spare2.iter().zip(other.mc_spare2.iter()).all(|(a, b)| a == b)
+            }
+        }
+        impl Eq for mcontext_t {}
+        impl ::fmt::Debug for mcontext_t {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("mcontext_t")
+                    .field("mc_onstack", &self.mc_onstack)
+                    .field("mc_gs", &self.mc_gs)
+                    .field("mc_fs", &self.mc_fs)
+                    .field("mc_es", &self.mc_es)
+                    .field("mc_ds", &self.mc_ds)
+                    .field("mc_edi", &self.mc_edi)
+                    .field("mc_esi", &self.mc_esi)
+                    .field("mc_ebp", &self.mc_ebp)
+                    .field("mc_isp", &self.mc_isp)
+                    .field("mc_ebx", &self.mc_ebx)
+                    .field("mc_edx", &self.mc_edx)
+                    .field("mc_ecx", &self.mc_ecx)
+                    .field("mc_eax", &self.mc_eax)
+                    .field("mc_trapno", &self.mc_trapno)
+                    .field("mc_err", &self.mc_err)
+                    .field("mc_eip", &self.mc_eip)
+                    .field("mc_cs", &self.mc_cs)
+                    .field("mc_eflags", &self.mc_eflags)
+                    .field("mc_esp", &self.mc_esp)
+                    .field("mc_ss", &self.mc_ss)
+                    .field("mc_len", &self.mc_len)
+                    .field("mc_fpformat", &self.mc_fpformat)
+                    .field("mc_ownedfp", &self.mc_ownedfp)
+                    .field("mc_flags", &self.mc_flags)
+                    .field("mc_fpstate", &self.mc_fpstate)
+                    .field("mc_fsbase", &self.mc_fsbase)
+                    .field("mc_gsbase", &self.mc_gsbase)
+                    .field("mc_xfpustate", &self.mc_xfpustate)
+                    .field("mc_xfpustate_len", &self.mc_xfpustate_len)
+                    .field("mc_spare2", &self.mc_spare2)
+                    .finish()
+            }
+        }
+        impl ::hash::Hash for mcontext_t {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.mc_onstack.hash(state);
+                self.mc_gs.hash(state);
+                self.mc_fs.hash(state);
+                self.mc_es.hash(state);
+                self.mc_ds.hash(state);
+                self.mc_edi.hash(state);
+                self.mc_esi.hash(state);
+                self.mc_ebp.hash(state);
+                self.mc_isp.hash(state);
+                self.mc_ebx.hash(state);
+                self.mc_edx.hash(state);
+                self.mc_ecx.hash(state);
+                self.mc_eax.hash(state);
+                self.mc_trapno.hash(state);
+                self.mc_err.hash(state);
+                self.mc_eip.hash(state);
+                self.mc_cs.hash(state);
+                self.mc_eflags.hash(state);
+                self.mc_esp.hash(state);
+                self.mc_ss.hash(state);
+                self.mc_len.hash(state);
+                self.mc_fpformat.hash(state);
+                self.mc_ownedfp.hash(state);
+                self.mc_flags.hash(state);
+                self.mc_fpstate.hash(state);
+                self.mc_fsbase.hash(state);
+                self.mc_gsbase.hash(state);
+                self.mc_xfpustate.hash(state);
+                self.mc_xfpustate_len.hash(state);
+                self.mc_spare2.hash(state);
+            }
+        }
+    }
+}
+
 pub const MINSIGSTKSZ: ::size_t = 2048; // 512 * 4