From c8d2e6ed99e77c4ba6f911e6dbeeffb8cefe2e95 Mon Sep 17 00:00:00 2001
From: Alex <skiffaw@g.cofc.edu>
Date: Mon, 28 Jun 2021 10:31:54 -0400
Subject: [PATCH 1/2] fix warnings and fix return values for nop/blr. Add
 post-build event

---
 libpsutil/encryption/rc4.cpp | 10 ++++++++--
 libpsutil/libpsutil.vcxproj  | 12 +++++++++++-
 libpsutil/system/memory.cpp  |  4 ++--
 3 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/libpsutil/encryption/rc4.cpp b/libpsutil/encryption/rc4.cpp
index 9d97dab..36a5421 100644
--- a/libpsutil/encryption/rc4.cpp
+++ b/libpsutil/encryption/rc4.cpp
@@ -26,11 +26,14 @@ namespace libpsutil
                 for (int i = 0; i < N; i++)
                     S[i] = i;
 
-                for (int i = 0; i < N; i++) {
+                for (int i = 0; i < N; i++)
+                {
                     j = (j + S[i] + key[i % len]) % N;
 
                     swap(&S[i], &S[j]);
                 }
+
+                return 0;
             }
 
             int PRGA(unsigned char* S, char* plaintext, unsigned char* ciphertext)
@@ -48,8 +51,9 @@ namespace libpsutil
                     int rnd = S[(S[i] + S[j]) % N];
 
                     ciphertext[n] = rnd ^ plaintext[n];
-
                 }
+
+                return 0;
             }
         }
         
@@ -59,6 +63,8 @@ namespace libpsutil
             KSA(key, S);
 
             PRGA(S, plaintext, ciphertext);
+
+            return 0;
         }
 	}
 }
\ No newline at end of file
diff --git a/libpsutil/libpsutil.vcxproj b/libpsutil/libpsutil.vcxproj
index 5914bbf..f26b8a4 100644
--- a/libpsutil/libpsutil.vcxproj
+++ b/libpsutil/libpsutil.vcxproj
@@ -34,7 +34,7 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
   </ImportGroup>
   <PropertyGroup Label="UserMacros" />
-  <PropertyGroup />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|PS3'" />
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|PS3'">
     <ClCompile>
       <PreprocessorDefinitions>NDEBUG;%(PreprocessorDefinitions);</PreprocessorDefinitions>
@@ -42,6 +42,16 @@
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <CppLanguageStd>Cpp11</CppLanguageStd>
     </ClCompile>
+    <CustomBuildStep>
+      <Command>
+      </Command>
+    </CustomBuildStep>
+    <PostBuildEvent>
+      <Command>copy /y "$(TargetPath)" "$(SCE_PS3_ROOT)/target/ppu/lib/"</Command>
+    </PostBuildEvent>
+    <PostBuildEvent>
+      <Message>Copy Lib to SCE Lib Directory</Message>
+    </PostBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="encryption\rc4.cpp" />
diff --git a/libpsutil/system/memory.cpp b/libpsutil/system/memory.cpp
index b0f9ca6..6c96b12 100644
--- a/libpsutil/system/memory.cpp
+++ b/libpsutil/system/memory.cpp
@@ -31,12 +31,12 @@ namespace libpsutil
 
 		bool nop(uint32_t address)
 		{
-			return set<uint32_t>(address, 0x60000000) == SUCCEEDED;
+			return memory::set<uint32_t>(address, 0x60000000);
 		}
 
 		bool blr(uint32_t address)
 		{
-			return set<uint32_t>(address, 0x4E800020) == SUCCEEDED;
+			return memory::set<uint32_t>(address, 0x4E800020);
 		}
 
 		void jump(uint32_t address, uint32_t destination, bool linked)

From 7b0a608ffdce69befcaecfb9ea8ed49c5171dbfe Mon Sep 17 00:00:00 2001
From: Alex <skiffaw@g.cofc.edu>
Date: Wed, 30 Jun 2021 19:22:13 -0400
Subject: [PATCH 2/2] add a safe jump to detours to fix hooks using r0

---
 libpsutil/system/memory.cpp | 20 ++++++++++++++++++--
 libpsutil/system/memory.hpp |  1 +
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/libpsutil/system/memory.cpp b/libpsutil/system/memory.cpp
index 6c96b12..b7fb16a 100644
--- a/libpsutil/system/memory.cpp
+++ b/libpsutil/system/memory.cpp
@@ -51,6 +51,22 @@ namespace libpsutil
 			memory::set(address, instructions, sizeof(uint32_t) * 4);
 		}
 
+		void jump_safe(uint32_t address, uint32_t destination, bool linked)
+		{
+			uint32_t instructions[8] = { 0 };
+
+			instructions[0] = 0xF821FFF9;
+			instructions[1] = 0xF8010000;
+			instructions[2] = 0x3C000000 + ((destination >> 16) & 0xFFFF);
+			instructions[3] = 0x60000000 + (destination & 0xFFFF);
+			instructions[4] = 0x7C0903A6;
+			instructions[5] = 0xE8010000;
+			instructions[6] = 0x38210008;
+			instructions[7] = 0x4E800420 + (linked ? 1 : 0);
+
+			memory::set(address, instructions, sizeof(uint32_t) * 8);
+		}
+
 		uint32_t get_game_toc()
 		{
 			uint32_t* entry_point = *reinterpret_cast<uint32_t**>(0x1001C); //ElfHeader->e_entry 
@@ -65,7 +81,7 @@ namespace libpsutil
 				stub_section = reinterpret_cast<uint8_t*>(detour::force_stub_addr);
 			}
 
-			auto stub_address = reinterpret_cast<uint32_t>(&stub_section[this->hook_count * 0x80]);
+			auto stub_address = reinterpret_cast<uint32_t>(&stub_section[this->hook_count * 0x90]);
 			this->hook_count++;
 
 			return stub_address;
@@ -111,7 +127,7 @@ namespace libpsutil
 				}
 			}
 
-			memory::jump(reinterpret_cast<uint32_t>(&stub_address[instruction_count]), address + 0x10, false);
+			memory::jump_safe(reinterpret_cast<uint32_t>(&stub_address[instruction_count]), address + 0x10, false);
 			memory::jump(address, *reinterpret_cast<uint32_t*>(destination), false);
 
 			this->stub_opd[0] = reinterpret_cast<uint32_t>(stub_address);
diff --git a/libpsutil/system/memory.hpp b/libpsutil/system/memory.hpp
index c7556d4..b6c8f2f 100644
--- a/libpsutil/system/memory.hpp
+++ b/libpsutil/system/memory.hpp
@@ -17,6 +17,7 @@ namespace libpsutil
 		bool blr(uint32_t address);
 
 		void jump(uint32_t address, uint32_t destination, bool linked = false);
+		void jump_safe(uint32_t address, uint32_t destination, bool linked = false);
 
 		uint32_t get_game_toc();