initial

CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8)
+
+if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
+  if(DEFINED ENV{VITASDK})
+    set(CMAKE_TOOLCHAIN_FILE "$ENV{VITASDK}/share/vita.toolchain.cmake" CACHE PATH "toolchain file")
+  else()
+    message(FATAL_ERROR "Please define VITASDK to point to your SDK path!")
+  endif()
+endif()
+
+project(ButtonSwap)
+include("${VITASDK}/share/vita.cmake" REQUIRED)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,-q -Wall -O3 -std=gnu99")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -fno-rtti -fno-exceptions")
+
+include_directories(
+)
+
+link_directories(
+  ${CMAKE_CURRENT_BINARY_DIR}
+)
+
+if (NOT ${RELEASE})
+  add_definitions(-DENABLE_LOGGING)
+endif()
+
+add_executable(buttonswap
+  buttonswap.c
+)
+
+target_link_libraries(buttonswap
+  taihen_stub
+  SceLibKernel_stub
+  SceIofilemgr_stub
+)
+
+set_target_properties(buttonswap
+  PROPERTIES LINK_FLAGS "-nostdlib"
+)
+
+vita_create_self(buttonswap.suprx buttonswap
+  CONFIG ${CMAKE_SOURCE_DIR}/buttonswap.yml
+)

README.md

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+# Button Swap
+taiHEN plugin for swapping X and O buttons on PSVita
+
+Installation
+--------------------------------------------------------------------------------
+
+Put "buttonswap.suprx" in 'tai' folder in the root of your Vita.
+
+Change config.txt in that directory to load plugin for title of your choice by adding new lines like below:
+
+```text
+# titleid for your game (this one is for Root//Letter for example)
+*PCSB01019
+ux0:tai/buttonswap.suprx
+```
+
+After that just run the game and your buttons should be swapped (this would work only for this game).

buttonswap.c

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+#include <psp2/kernel/modulemgr.h>
+#include <psp2/ctrl.h>
+#include <taihen.h>
+
+static SceUID g_hooks[3];
+
+static tai_hook_ref_t ref_hook;
+
+static int keys_patched(int port, SceCtrlData *ctrl, int count) {
+
+  int ret;
+
+  if (ref_hook == 0)
+     ret = 1;
+  else
+  {
+     ret = TAI_CONTINUE(int, ref_hook, port, ctrl, count);
+
+     if ((ctrl->buttons & 0x6000) && ((ctrl->buttons & 0x6000) != 0x6000))
+     ctrl->buttons = ctrl->buttons ^ 0x6000;
+
+  }
+  return ret;
+}
+
+static tai_hook_ref_t ref_hook2;
+
+static int keys_patched2(int port, SceCtrlData *ctrl, int count) {
+
+  int ret;
+
+  if (ref_hook2 == 0)
+     ret = 1;
+  else
+  {
+     ret = TAI_CONTINUE(int, ref_hook2, port, ctrl, count);
+
+     if ((ctrl->buttons & 0x6000) && ((ctrl->buttons & 0x6000) != 0x6000))
+     ctrl->buttons = ctrl->buttons ^ 0x6000;
+
+  }
+  return ret;
+}
+
+
+
+void _start() __attribute__ ((weak, alias ("module_start")));
+
+int module_start(SceSize argc, const void *args) {
+
+  ref_hook  = 0;
+  ref_hook2 = 0;
+
+  g_hooks[1] = taiHookFunctionImport(&ref_hook, 
+                                      TAI_MAIN_MODULE,
+                                      TAI_ANY_LIBRARY,
+                                      0xA9C3CED6, // sceCtrlPeekBufferPositive
+                                      keys_patched);
+
+  g_hooks[2] = taiHookFunctionImport(&ref_hook2, 
+                                      TAI_MAIN_MODULE,
+                                      TAI_ANY_LIBRARY,
+                                      0x15F81E8C, // sceCtrlPeekBufferPositive2
+                                      keys_patched2);
+  return SCE_KERNEL_START_SUCCESS;
+}
+
+int module_stop(SceSize argc, const void *args) {
+
+  // free hooks that didn't fail
+  if (g_hooks[1] >= 0) taiHookRelease(g_hooks[1], ref_hook);
+  if (g_hooks[2] >= 0) taiHookRelease(g_hooks[2], ref_hook2);
+
+  return SCE_KERNEL_STOP_SUCCESS;
+}

buttonswap.yml

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+ButtonSwap:
+  attributes: 0
+  version:
+    major: 1
+    minor: 1
+  main:
+    start: module_start
+    stop: module_stop