From cd227830a42f96dc5ca12079f3c3ee72b1f209c2 Mon Sep 17 00:00:00 2001
From: Nathaniel McCallum <nathaniel@mccallum.life>
Date: Sun, 5 Sep 2021 01:18:08 -0400
Subject: [PATCH] elf: Add PF_MASKOS and PF_MASKPROC (#281)

These masks indicate program header flag bits that are reserved for OS
and processor specific usage. See the ELF specification for details.

Signed-off-by: Nathaniel McCallum <nathaniel@congru.us>
---
 src/elf/program_header.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/elf/program_header.rs b/src/elf/program_header.rs
index 1fd8a277..328847a9 100644
--- a/src/elf/program_header.rs
+++ b/src/elf/program_header.rs
@@ -51,6 +51,10 @@ pub const PF_X: u32 = 1;
 pub const PF_W: u32 = 1 << 1;
 /// Segment is readable
 pub const PF_R: u32 = 1 << 2;
+/// Bits reserved for OS-specific usage
+pub const PF_MASKOS: u32 = 0x0ff0_0000;
+/// Bits reserved for processor-specific usage
+pub const PF_MASKPROC: u32 = 0xf000_0000;
 
 pub fn pt_to_str(pt: u32) -> &'static str {
     match pt {