From 1cf90f45704373cd61d274d1e3c4dc6e5be87eaa Mon Sep 17 00:00:00 2001
From: Lioncash <mathew1800@gmail.com>
Date: Fri, 22 Mar 2019 13:04:41 -0400
Subject: file_sys/patch_manager: Deduplicate NSO header

This source file was utilizing its own version of the NSO header.
Instead of keeping this around, we can have the patch manager also use
the version of the header that we have defined in loader/nso.h
---
 src/core/loader/nso.h | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

(limited to 'src/core/loader/nso.h')

diff --git a/src/core/loader/nso.h b/src/core/loader/nso.h
index 167c8a694..4674c3724 100644
--- a/src/core/loader/nso.h
+++ b/src/core/loader/nso.h
@@ -4,7 +4,9 @@
 
 #pragma once
 
+#include <array>
 #include <optional>
+#include <type_traits>
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "core/file_sys/patch_manager.h"
@@ -16,6 +18,43 @@ class Process;
 
 namespace Loader {
 
+struct NSOSegmentHeader {
+    u32_le offset;
+    u32_le location;
+    u32_le size;
+    union {
+        u32_le alignment;
+        u32_le bss_size;
+    };
+};
+static_assert(sizeof(NSOSegmentHeader) == 0x10, "NsoSegmentHeader has incorrect size.");
+
+struct NSOHeader {
+    using SHA256Hash = std::array<u8, 0x20>;
+
+    struct RODataRelativeExtent {
+        u32_le data_offset;
+        u32_le size;
+    };
+
+    u32_le magic;
+    u32_le version;
+    u32 reserved;
+    u32_le flags;
+    std::array<NSOSegmentHeader, 3> segments; // Text, RoData, Data (in that order)
+    std::array<u8, 0x20> build_id;
+    std::array<u32_le, 3> segments_compressed_size;
+    std::array<u8, 0x1C> padding;
+    RODataRelativeExtent api_info_extent;
+    RODataRelativeExtent dynstr_extent;
+    RODataRelativeExtent dynsyn_extent;
+    std::array<SHA256Hash, 3> segment_hashes;
+
+    bool IsSegmentCompressed(size_t segment_num) const;
+};
+static_assert(sizeof(NSOHeader) == 0x100, "NSOHeader has incorrect size.");
+static_assert(std::is_trivially_copyable_v<NSOHeader>, "NSOHeader must be trivially copyable.");
+
 constexpr u64 NSO_ARGUMENT_DATA_ALLOCATION_SIZE = 0x9000;
 
 struct NSOArgumentHeader {
-- 
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