From f7a12daa4c154542a1c4d53881cca15ba6163e25 Mon Sep 17 00:00:00 2001
From: wwylele <wwylele@gmail.com>
Date: Fri, 15 Jul 2016 10:05:45 +0300
Subject: [PATCH] LDR: CROHelper misc fucntion

---
 src/core/hle/service/ldr_ro.cpp | 38 +++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/src/core/hle/service/ldr_ro.cpp b/src/core/hle/service/ldr_ro.cpp
index 788813199..28a16bad9 100644
--- a/src/core/hle/service/ldr_ro.cpp
+++ b/src/core/hle/service/ldr_ro.cpp
@@ -1679,6 +1679,17 @@ public:
         UnrebaseHeader();
     }
 
+    /**
+     * Verifies module hash by CRR.
+     * @param cro_size the size of the CRO
+     * @param crr the virtual address of the CRR
+     * @returns ResultCode RESULT_SUCCESS on success, otherwise error code.
+     */
+    ResultCode VerifyHash(u32 cro_size, VAddr crr) const {
+        // TODO(wwylele): actually verify the hash
+        return RESULT_SUCCESS;
+    }
+
     /**
      * Links this module with all registered auto-link module.
      * @param crs_address the virtual address of the static module
@@ -1971,6 +1982,33 @@ public:
         return GetField(FixedSize);
     }
 
+    bool IsLoaded() const {
+        u32 magic = GetField(Magic);
+        if (magic != MAGIC_CRO0 && magic != MAGIC_FIXD)
+            return false;
+
+        // TODO(wwylele): verify memory state here after memory aliasing is implemented
+
+        return true;
+    }
+
+    /**
+     * Gets the page address and size of the code segment.
+     * @returns a tuple of (address, size); (0, 0) if the code segment doesn't exist.
+     */
+    std::tuple<VAddr, u32> GetExecutablePages() const {
+        u32 segment_num = GetField(SegmentNum);
+        for (u32 i = 0; i < segment_num; ++i) {
+            SegmentEntry entry;
+            GetEntry(i, entry);
+            if (entry.type == SegmentType::Code && entry.size != 0) {
+                VAddr begin = Common::AlignDown(entry.offset, Memory::PAGE_SIZE);
+                VAddr end = Common::AlignUp(entry.offset + entry.size, Memory::PAGE_SIZE);
+                return std::make_tuple(begin, end - begin);
+            }
+        }
+        return std::make_tuple(0, 0);
+    }
 };
 
 std::array<int, 17> CROHelper::ENTRY_SIZE {{