Add definitions in ucontext.h in Android for x86_64

Ref: https://android.googlesource.com/platform/bionic/+/refs/tags/ndk-r20/libc/include/sys/ucontext.h

Author: Yuji Yamamoto

src/unix/linux_like/android/b64/mod.rs

@@ -126,6 +126,10 @@ s_no_extra_traits! {
         attr: i32,
         __reserved: [::c_char; 36],
     }
+
+    pub struct sigset64_t {
+        __bits: [::c_ulong; 1]
+    }
 }
 
 cfg_if! {
@@ -228,6 +232,14 @@ cfg_if! {
                 self.__reserved.hash(state);
             }
         }
+
+        impl ::fmt::Debug for sigset64_t {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("sigset64_t")
+                    .field("__bits", &self.__bits)
+                    .finish()
+            }
+        }
     }
 }
 

src/unix/linux_like/android/b64/x86_64/mod.rs

@@ -1,5 +1,6 @@
 pub type c_char = i8;
 pub type wchar_t = i32;
+pub type greg_t = i64;
 
 s! {
     pub struct stat {
@@ -41,6 +42,218 @@ s! {
         pub st_ctime_nsec: ::c_long,
         __unused: [::c_long; 3],
     }
+
+    pub struct _libc_xmmreg {
+        pub element: [u32; 4],
+    }
+}
+
+cfg_if! {
+    if #[cfg(libc_union)] {
+        s_no_extra_traits! {
+            pub union __c_anonymous_uc_sigmask {
+                uc_sigmask: ::sigset_t,
+                uc_sigmask64: ::sigset64_t,
+            }
+        }
+
+        cfg_if! {
+            if #[cfg(feature = "extra_traits")] {
+                impl PartialEq for __c_anonymous_uc_sigmask {
+                    fn eq(&self, other: &__c_anonymous_uc_sigmask) -> bool {
+                        unsafe { self.uc_sigmask == other.uc_sigmask }
+                    }
+                }
+                impl Eq for __c_anonymous_uc_sigmask {}
+                impl ::fmt::Debug for __c_anonymous_uc_sigmask {
+                    fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                        f.debug_struct("uc_sigmask")
+                            .field("uc_sigmask", unsafe { &self.uc_sigmask })
+                            .finish()
+                    }
+                }
+                impl ::hash::Hash for __c_anonymous_uc_sigmask {
+                    fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                        unsafe { self.uc_sigmask.hash(state) }
+                    }
+                }
+            }
+        }
+    }
+}
+
+s_no_extra_traits! {
+    pub struct _libc_fpxreg {
+        pub significand: [u16; 4],
+        pub exponent: u16,
+        __padding: [u16; 3],
+    }
+
+    pub struct _libc_fpstate {
+        pub cwd: u16,
+        pub swd: u16,
+        pub ftw: u16,
+        pub fop: u16,
+        pub rip: u64,
+        pub rdp: u64,
+        pub mxcsr: u32,
+        pub mxcr_mask: u32,
+        pub _st: [_libc_fpxreg; 8],
+        pub _xmm: [_libc_xmmreg; 16],
+        __private: [u32; 24],
+    }
+
+    pub struct mcontext_t {
+        pub gregs: [greg_t; 23],
+        pub fpregs: *mut _libc_fpstate,
+        __private: [u64; 8],
+    }
+
+    pub struct ucontext_t {
+        pub uc_flags: ::c_ulong,
+        pub uc_link: *mut ucontext_t,
+        pub uc_stack: ::stack_t,
+        pub uc_mcontext: mcontext_t,
+        pub uc_sigmask64: __c_anonymous_uc_sigmask,
+        __fpregs_mem: _libc_fpstate,
+    }
+}
+
+cfg_if! {
+    if #[cfg(feature = "extra_traits")] {
+        impl PartialEq for _libc_fpxreg {
+            fn eq(&self, other: &Self) -> bool {
+                self.significand == other.significand
+                    && self.exponent == other.exponent
+                    // Ignore padding field
+            }
+        }
+        impl Eq for _libc_fpxreg {}
+        impl ::fmt::Debug for _libc_fpxreg {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("_libc_fpxreg")
+                    .field("significand", &self.significand)
+                    .field("exponent", &self.exponent)
+                    // Ignore padding field
+                    .finish()
+            }
+        }
+        impl ::hash::Hash for _libc_fpxreg {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.significand.hash(state);
+                self.exponent.hash(state);
+                // Ignore padding field
+            }
+        }
+
+        impl PartialEq for _libc_fpstate {
+            fn eq(&self, other: &Self) -> bool {
+                self.cwd == other.cwd
+                    && self.swd == other.swd
+                    && self.ftw == other.ftw
+                    && self.fop == other.fop
+                    && self.rip == other.rip
+                    && self.rdp == other.rdp
+                    && self.mxcsr == other.mxcsr
+                    && self.mxcr_mask == other.mxcr_mask
+                    && self._st == other._st
+                    && self._xmm == other._xmm
+                    // Ignore padding field
+            }
+        }
+        impl Eq for _libc_fpstate {}
+        impl ::fmt::Debug for _libc_fpstate {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("_libc_fpstate")
+                    .field("cwd", &self.cwd)
+                    .field("swd", &self.swd)
+                    .field("ftw", &self.ftw)
+                    .field("fop", &self.fop)
+                    .field("rip", &self.rip)
+                    .field("rdp", &self.rdp)
+                    .field("mxcsr", &self.mxcsr)
+                    .field("mxcr_mask", &self.mxcr_mask)
+                    .field("_st", &self._st)
+                    .field("_xmm", &self._xmm)
+                    // Ignore padding field
+                    .finish()
+            }
+        }
+        impl ::hash::Hash for _libc_fpstate {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.cwd.hash(state);
+                self.swd.hash(state);
+                self.ftw.hash(state);
+                self.fop.hash(state);
+                self.rip.hash(state);
+                self.rdp.hash(state);
+                self.mxcsr.hash(state);
+                self.mxcr_mask.hash(state);
+                self._st.hash(state);
+                self._xmm.hash(state);
+                // Ignore padding field
+            }
+        }
+
+        impl PartialEq for mcontext_t {
+            fn eq(&self, other: &Self) -> bool {
+                self.gregs == other.gregs
+                    && self.fpregs == other.fpregs
+                    // Ignore padding field
+            }
+        }
+        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("gregs", &self.gregs)
+                    .field("fpregs", &self.fpregs)
+                    // Ignore padding field
+                    .finish()
+            }
+        }
+        impl ::hash::Hash for mcontext_t {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.gregs.hash(state);
+                self.fpregs.hash(state);
+                // Ignore padding field
+            }
+        }
+
+        impl PartialEq for ucontext_t {
+            fn eq(&self, other: &Self) -> bool {
+                self.uc_flags == other.uc_flags
+                    && self.uc_link == other.uc_link
+                    && self.uc_stack == other.uc_stack
+                    && self.uc_mcontext == other.uc_mcontext
+                    && self.uc_sigmask64 == other.uc_sigmask64
+                    // Ignore padding field
+            }
+        }
+        impl Eq for ucontext_t {}
+        impl ::fmt::Debug for ucontext_t {
+            fn fmt(&self, f: &mut ::fmt::Formatter) -> ::fmt::Result {
+                f.debug_struct("ucontext_t")
+                    .field("uc_flags", &self.uc_flags)
+                    .field("uc_link", &self.uc_link)
+                    .field("uc_stack", &self.uc_stack)
+                    .field("uc_mcontext", &self.uc_mcontext)
+                    .field("uc_sigmask64", &self.uc_sigmask64)
+                    // Ignore padding field
+                    .finish()
+            }
+        }
+        impl ::hash::Hash for ucontext_t {
+            fn hash<H: ::hash::Hasher>(&self, state: &mut H) {
+                self.uc_flags.hash(state);
+                self.uc_link.hash(state);
+                self.uc_stack.hash(state);
+                self.uc_mcontext.hash(state);
+                self.uc_sigmask64.hash(state);
+                // Ignore padding field
+            }
+        }
+    }
 }
 
 pub const O_DIRECT: ::c_int = 0x4000;
@@ -419,6 +632,31 @@ pub const ES: ::c_int = 24;
 pub const FS: ::c_int = 25;
 pub const GS: ::c_int = 26;
 
+// offsets in mcontext_t.gregs from sys/ucontext.h
+pub const REG_R8: ::c_int = 0;
+pub const REG_R9: ::c_int = 1;
+pub const REG_R10: ::c_int = 2;
+pub const REG_R11: ::c_int = 3;
+pub const REG_R12: ::c_int = 4;
+pub const REG_R13: ::c_int = 5;
+pub const REG_R14: ::c_int = 6;
+pub const REG_R15: ::c_int = 7;
+pub const REG_RDI: ::c_int = 8;
+pub const REG_RSI: ::c_int = 9;
+pub const REG_RBP: ::c_int = 10;
+pub const REG_RBX: ::c_int = 11;
+pub const REG_RDX: ::c_int = 12;
+pub const REG_RAX: ::c_int = 13;
+pub const REG_RCX: ::c_int = 14;
+pub const REG_RSP: ::c_int = 15;
+pub const REG_RIP: ::c_int = 16;
+pub const REG_EFL: ::c_int = 17;
+pub const REG_CSGSFS: ::c_int = 18;
+pub const REG_ERR: ::c_int = 19;
+pub const REG_TRAPNO: ::c_int = 20;
+pub const REG_OLDMASK: ::c_int = 21;
+pub const REG_CR2: ::c_int = 22;
+
 cfg_if! {
     if #[cfg(libc_align)] {
         mod align;