diff --git a/src/segment.rs b/src/segment.rs
index f35b1d6..abb2b29 100644
--- a/src/segment.rs
+++ b/src/segment.rs
@@ -5,6 +5,36 @@ use crate::parse::{ParseAt, ParseError, ParsingTable};
 
 pub type SegmentTable<'data, E> = ParsingTable<'data, E, ProgramHeader>;
 
+/// C-style 32-bit ELF Program Segment Header definition
+///
+/// These C-style definitions are for users who want to implement their own ELF manipulation logic.
+#[repr(C)]
+pub struct Elf32_Phdr {
+    pub p_type: u32,
+    pub p_offset: u32,
+    pub p_vaddr: u32,
+    pub p_paddr: u32,
+    pub p_filesz: u32,
+    pub p_memsz: u32,
+    pub p_flags: u32,
+    pub p_align: u32,
+}
+
+/// C-style 64-bit ELF Program Segment Header definition
+///
+/// These C-style definitions are for users who want to implement their own ELF manipulation logic.
+#[repr(C)]
+pub struct Elf64_Phdr {
+    pub p_type: u32,
+    pub p_flags: u32,
+    pub p_offset: u64,
+    pub p_vaddr: u64,
+    pub p_paddr: u64,
+    pub p_filesz: u64,
+    pub p_memsz: u64,
+    pub p_align: u64,
+}
+
 /// Encapsulates the contents of an ELF Program Header
 ///
 /// The program header table is an array of program header structures describing