Auto merge of #2192 - devnexen:netbsd_auxinfo, r=JohnTitor

netbsd mapping auxiliary vectors type

src/unix/bsd/netbsdlike/netbsd/mod.rs

@@ -36,10 +36,14 @@ cfg_if! {
         type Elf_Addr = Elf64_Addr;
         type Elf_Half = Elf64_Half;
         type Elf_Phdr = Elf64_Phdr;
+        // Mainly code consumer is _dlauxinfo
+        type AuxInfo = Aux64Info;
     } else if #[cfg(target_pointer_width = "32")] {
         type Elf_Addr = Elf32_Addr;
         type Elf_Half = Elf32_Half;
         type Elf_Phdr = Elf32_Phdr;
+        // Mainly code consumer is _dlauxinfo
+        type AuxInfo = Aux32Info;
     }
 }
 
@@ -403,6 +407,16 @@ s! {
         pub p_align: Elf64_Xword,
     }
 
+    pub struct Aux32Info {
+        pub a_type: Elf32_Word,
+        pub a_v: Elf32_Word,
+    }
+
+    pub struct Aux64Info {
+        pub a_type: Elf64_Word,
+        pub a_v: Elf64_Xword,
+    }
+
     // link.h
 
     pub struct dl_phdr_info {
@@ -2074,6 +2088,10 @@ extern "C" {
         data: *mut ::c_void,
     ) -> ::c_int;
 
+    // dlfcn.h
+
+    pub fn _dlauxinfo() -> *mut ::c_void;
+
     pub fn iconv_open(tocode: *const ::c_char, fromcode: *const ::c_char) -> iconv_t;
     pub fn iconv(
         cd: iconv_t,