Implement reading Build ID from Go ELF binaries

src/elf.rs

@@ -1835,6 +1835,10 @@ pub const NT_SOLARIS_PAGESIZE_HINT: u32 = 1;
 /// GNU entries in the note section have this name.
 pub const ELF_NOTE_GNU: &[u8] = b"GNU";
 
+/// Go entries in the note section have this name.
+// See https://go-review.googlesource.com/9520 and https://go-review.googlesource.com/10704.
+pub const ELF_NOTE_GO: &[u8] = b"Go";
+
 // Note types for `ELF_NOTE_GNU`.
 
 /// ABI information.
@@ -1870,6 +1874,12 @@ pub const NT_GNU_HWCAP: u32 = 2;
 /// The descriptor consists of any nonzero number of bytes.
 pub const NT_GNU_BUILD_ID: u32 = 3;
 
+/// Build ID bits as generated by Go's gc compiler.
+///
+/// The descriptor consists of any nonzero number of bytes.
+// See https://go-review.googlesource.com/10707.
+pub const NT_GO_BUILD_ID: u32 = 4;
+
 /// Version note generated by GNU gold containing a version string.
 pub const NT_GNU_GOLD_VERSION: u32 = 4;
 

src/read/elf/file.rs

@@ -370,10 +370,12 @@ where
         let mut notes = self.notes();
         while let Some(mut notes) = notes.next().transpose()? {
             while let Some(note) = notes.next()? {
-                if note.name() == elf::ELF_NOTE_GNU
-                    && note.n_type(self.endian) == elf::NT_GNU_BUILD_ID
-                {
-                    return Ok(Some(note.desc()));
+                match (note.name(), note.n_type(self.endian())) {
+                    (elf::ELF_NOTE_GNU, elf::NT_GNU_BUILD_ID)
+                    | (elf::ELF_NOTE_GO, elf::NT_GO_BUILD_ID) => {
+                        return Ok(Some(note.desc()));
+                    }
+                    _ => {}
                 }
             }
         }