From 0de8f77c7189cde4c8c91be16283ca45cf97553a Mon Sep 17 00:00:00 2001
From: GaryOderNichts <12049776+GaryOderNichts@users.noreply.github.com>
Date: Sun, 4 Apr 2021 04:52:15 +0200
Subject: [PATCH] Add kernel_syscall_0x81 to instant_patches

---
 source/ios_kernel/source/instant_patches.c | 2 ++
 source/ios_kernel/source/kernel_patches.c  | 2 +-
 source/ios_kernel/source/kernel_patches.h  | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/source/ios_kernel/source/instant_patches.c b/source/ios_kernel/source/instant_patches.c
index 20049fb..c512dd4 100644
--- a/source/ios_kernel/source/instant_patches.c
+++ b/source/ios_kernel/source/instant_patches.c
@@ -45,6 +45,8 @@ void instant_patches_setup(void) {
     // apply IOS ELF launch hook
     *(volatile u32 *) 0x0812A120 = ARM_BL(0x0812A120, kernel_launch_ios);
 
+    *(volatile u32 *) 0x0812CD2C = ARM_B(0x0812CD2C, kernel_syscall_0x81);
+
     // patch FSA raw access
     *(volatile u32 *) 0x1070FAE8 = 0x05812070;
     *(volatile u32 *) 0x1070FAEC = 0xEAFFFFF9;
diff --git a/source/ios_kernel/source/kernel_patches.c b/source/ios_kernel/source/kernel_patches.c
index c7712b8..776d842 100644
--- a/source/ios_kernel/source/kernel_patches.c
+++ b/source/ios_kernel/source/kernel_patches.c
@@ -52,7 +52,7 @@ static const u32 KERNEL_MCP_IOMAPPINGS_STRUCT[] =
                 0x00000001                  // pid (MCP)
         };
 
-static int kernel_syscall_0x81(u32 command, u32 arg1, u32 arg2, u32 arg3) {
+int kernel_syscall_0x81(u32 command, u32 arg1, u32 arg2, u32 arg3) {
     switch (command) {
         case KERNEL_READ32: {
             return *(volatile u32 *) arg1;
diff --git a/source/ios_kernel/source/kernel_patches.h b/source/ios_kernel/source/kernel_patches.h
index aa0d6dd..03240fd 100644
--- a/source/ios_kernel/source/kernel_patches.h
+++ b/source/ios_kernel/source/kernel_patches.h
@@ -26,6 +26,8 @@
 
 int kernel_init_otp_buffer(u32 sd_sector, int tagValid);
 
+int kernel_syscall_0x81(u32 command, u32 arg1, u32 arg2, u32 arg3);
+
 void kernel_launch_ios(u32 launch_address, u32 L, u32 C, u32 H);
 
 void kernel_run_patches(u32 ios_elf_start);