Initial commit

README.md

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+# Sysident
+
+Playstation Vita plugin to show system information in the settings app.
+
+Made by Princess of Sleeping.

SysidentKernel/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 "$ENV{VITASDK}/share/vita.toolchain.cmake" CACHE PATH "toolchain file")
+  else()
+    message(FATAL_ERROR "Please define VITASDK to point to your SDK path!")
+  endif()
+endif()
+
+project(SysidentKernel)
+include("${VITASDK}/share/vita.cmake" REQUIRED)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,-q -Wall -O3 -fno-inline")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti -fno-exceptions")
+
+enable_language(C ASM)
+
+add_executable(SysidentKernel
+  src/main.c
+)
+
+target_link_libraries(SysidentKernel
+  SceDebugForDriver_stub
+  SceIofilemgrForDriver_stub
+  SceSblSsMgrForDriver_stub
+  SceSysclibForDriver_stub
+  SceSysmemForDriver_stub
+  SceThreadmgrForDriver_stub
+  taihenForKernel_stub
+  taihenModuleUtils_stub
+)
+
+set_target_properties(SysidentKernel
+  PROPERTIES LINK_FLAGS "-nostdlib"
+  COMPILE_FLAGS "-D__VITA_KERNEL__"
+)
+
+vita_create_self(sysident.skprx SysidentKernel
+  CONFIG exports.yml
+  UNSAFE
+)
+
+vita_create_stubs(stubs SysidentKernel ${CMAKE_SOURCE_DIR}/exports.yml KERNEL)

SysidentKernel/exports.yml

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+SysidentKernel:
+  attributes: 0
+  version:
+    major: 1
+    minor: 0
+  main:
+    start: module_start
+    stop: module_stop
+  modules:
+    SysidentForUser:
+      syscall: true
+      functions:
+        - sysidentGetBootloaderRevision

SysidentKernel/src/main.c

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+/*
+ * Sysident Kernel
+ * Copyright (C) 2020, 浅倉麗子, sysie, Princess of Sleeping
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <psp2kern/kernel/cpu.h>
+#include <psp2kern/kernel/modulemgr.h>
+#include <psp2kern/kernel/threadmgr.h>
+#include <psp2kern/kernel/sysmem.h>
+#include <psp2kern/io/fcntl.h>
+#include <psp2kern/io/stat.h>
+#include <taihen.h>
+
+#include "sysident_helper.h"
+#include "sysroot.h"
+
+#define HookExport(module_name, library_nid, func_nid, func_name) taiHookFunctionExportForKernel(0x10005, &func_name ## _ref, module_name, library_nid, func_nid, func_name ## _patched)
+#define HookImport(module_name, library_nid, func_nid, func_name) taiHookFunctionImportForKernel(0x10005, &func_name ## _ref, module_name, library_nid, func_nid, func_name ## _patched)
+#define HookOffset(modid, offset, thumb, func_name) taiHookFunctionOffsetForKernel(0x10005, &func_name ## _ref, modid, 0, offset, thumb, func_name ## _patched)
+
+#define HookRelease(hook_uid, hook_func_name) ({ \
+	(hook_uid > 0) ? taiHookReleaseForKernel(hook_uid, hook_func_name ## _ref) : -1; \
+})
+
+int module_get_export_func(SceUID pid, const char *modname, unsigned int lib_nid, unsigned int func_nid, uintptr_t *func);
+
+#define GetExport(modname, lib_nid, func_nid, func) module_get_export_func(KERNEL_PID, modname, lib_nid, func_nid, (uintptr_t *)func)
+
+// #define printf ksceDebugPrintf
+#define printf(...)
+
+// old name is sceKernelGetSysrootBuffer
+SceBootArgs *(* sceKernelSysrootGetKblParam)(void);
+
+int sysidentGetBootloaderRevision(int *pRev){
+
+	int state, res;
+
+	ENTER_SYSCALL(state);
+
+	if(pRev == NULL){
+		res = 0x80020006;
+	}else{
+		res = ksceKernelMemcpyKernelToUser((uintptr_t)pRev, (const void *)&sceKernelSysrootGetKblParam()->bootldr_revision, 4);
+	}
+
+	EXIT_SYSCALL(state);
+
+	return res;
+}
+
+void _start() __attribute__ ((weak, alias ("module_start")));
+int module_start(SceSize argc, const void *args){
+
+	if(GetExport("SceSysmem", 0x3691DA45, 0x9DB56D1F, &sceKernelSysrootGetKblParam) < 0)
+		return SCE_KERNEL_START_NO_RESIDENT;
+
+	return SCE_KERNEL_START_SUCCESS;
+}
+
+__attribute__((noinline))
+int module_stop(SceSize argc, const void *args){
+	return SCE_KERNEL_STOP_SUCCESS;
+}

SysidentKernel/src/sysident_helper.h

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+/*
+ * Sysident Helper header
+ * Copyright (C) 2020, 浅倉麗子, sysie, Princess of Sleeping
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 3 of the License.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef _SYSIDENT_KERNEL_H_
+#define _SYSIDENT_KERNEL_H_
+
+int sysidentGetBootloaderRevision(int *rev);
+
+#endif // _SYSIDENT_KERNEL_H_

SysidentKernel/src/sysroot.h

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+
+#ifndef _PSP2_KERNEL_SYSROOT_H_
+#define _PSP2_KERNEL_SYSROOT_H_
+
+#include <psp2kern/types.h>
+
+typedef struct SceBootArgs {
+	unsigned short version;
+	unsigned short size;
+	int current_fw_version;
+	int factory_fw_version;
+	uint8_t unk_C[0x14];
+	uint8_t qa_flags[0x10];
+	uint8_t boot_flags[0x10];
+
+	// Begin Dipsw
+	uint32_t devkit_cp_timestamp_1;
+	uint16_t devkit_cp_version;
+	uint16_t devkit_cp_build_id;
+	uint32_t devkit_cp_timestamp_2;
+	uint32_t aslr_seed;
+	uint32_t devkit_boot_parameters;
+	uint32_t unk_54;
+	uint32_t devkit_unk_flags;
+	uint32_t devkit_flags_3;
+	// End Dipsw
+
+	unsigned int dram_base;
+	SceSize dram_size;
+	uint32_t unk_68;
+	uint32_t boot_type_indicator_1;
+	uint8_t open_psid[0x10];
+
+	unsigned int secure_kernel_enp_addr;
+	SceSize      secure_kernel_enp_size;
+	unsigned int context_auth_sm_self_addr;
+	SceSize      context_auth_sm_self_size;
+	unsigned int kprx_auth_sm_self_addr;
+	SceSize      kprx_auth_sm_self_size;
+	unsigned int prog_rvk_srvk_addr;
+	SceSize      prog_rvk_srvk_size;
+
+	uint8_t pscode[0x8];
+	uint8_t unk_A8[0x8];
+	uint8_t session_id[0x10];
+	uint32_t unk_C0;
+	uint32_t wakeup_factor;
+	uint32_t unk_C8;
+	uint32_t unk_CC;
+	unsigned int resume_context_addr;
+	uint32_t hardware_info;
+	uint32_t boot_type_indicator_2;
+	uint8_t unk_DC[0xC];
+	uint8_t hardware_flags[0x10];
+	uint32_t bootldr_revision;
+	uint32_t magic;
+	uint8_t session_key[0x20];
+	uint8_t unused[0xE0];
+} __attribute__((packed)) SceBootArgs;
+
+#endif // _PSP2_KERNEL_SYSROOT_H_

SysidentUser/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 "$ENV{VITASDK}/share/vita.toolchain.cmake" CACHE PATH "toolchain file")
+  else()
+    message(FATAL_ERROR "Please define VITASDK to point to your SDK path!")
+  endif()
+endif()
+
+project(SysidentUser)
+include("${VITASDK}/share/vita.cmake" REQUIRED)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wl,-q -Wall -O3 -fno-inline")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -fno-rtti -fno-exceptions")
+
+enable_language(C ASM)
+
+include_directories(
+)
+
+link_directories(
+  ${CMAKE_CURRENT_BINARY_DIR}
+)
+
+add_executable(SysidentUser
+  src/main.c
+  src/taihen_min.c
+  src/i2f.S
+)
+
+target_link_libraries(SysidentUser
+  SceLibKernel_stub
+  SceSblSsMgr_stub
+  SceSblPostSsMgr_stub
+  SceKernelModulemgr_stub
+  SceKernelThreadMgr_stub
+  SceSysmem_stub
+  SceVshBridge_stub
+  taihen_stub
+  ${CMAKE_CURRENT_BINARY_DIR}/../SysidentKernel/libSysidentKernel_stub_weak.a
+)
+
+set_target_properties(SysidentUser
+  PROPERTIES LINK_FLAGS "-nostdlib"
+)
+
+vita_create_self(sysident.suprx SysidentUser
+  CONFIG exports.yml
+  UNSAFE
+)
+

SysidentUser/exports.yml

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

SysidentUser/src/i2f.S

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+
+	.align 4
+	.text
+	.cpu cortex-a9
+	.arch armv7-a
+	.syntax unified
+	.thumb
+	.thumb_func
+	.fpu neon
+
+	.global i2f
+	.type   i2f, %function
+
+@ int i2f(float *dst, uint32_t val);
+
+i2f:
+	// 1024
+	movs r3, #0
+	movt r3, #0x4480
+
+	vmov s0, r3
+
+	vmov s1, r1
+	vcvt.f32.u32 s1, s1
+
+	vdiv.f32 s0, s1, s0
+
+	vstr s0, [r0]
+
+	bx lr
+
+	.data