diff --git a/src/core/PS4/HLE/LibKernel.cpp b/src/core/PS4/HLE/LibKernel.cpp
index a7599afad..4e7eee753 100644
--- a/src/core/PS4/HLE/LibKernel.cpp
+++ b/src/core/PS4/HLE/LibKernel.cpp
@@ -3,6 +3,7 @@
 #include <Util/log.h>
 #include <debug.h>
 #include <windows.h>
+#include <io.h>
 
 #include "Emulator/Util/singleton.h"
 #include "../Loader/Elf.h"
@@ -26,6 +27,51 @@ int32_t PS4_SYSV_ABI sceKernelReleaseDirectMemory(off_t start, size_t len) {
 static PS4_SYSV_ABI void stack_chk_fail() { BREAKPOINT(); }
 
 int PS4_SYSV_ABI sceKernelMunmap(void* addr, size_t len) { BREAKPOINT(); }
+
+static thread_local int libc_error;
+PS4_SYSV_ABI int* __Error() { return &libc_error; }
+
+#define PROT_READ 0x1
+#define PROT_WRITE 0x2
+
+int PS4_SYSV_ABI sceKernelMmap(void* addr, u64 len, int prot, int flags, int fd, off_t offset, void** res) {
+    DWORD flProtect;
+    if (prot & PROT_WRITE) {
+        flProtect = PAGE_READWRITE;
+    }
+    off_t end = len + offset;
+    HANDLE mmap_fd, h;
+    if (fd == -1)
+        mmap_fd = INVALID_HANDLE_VALUE;
+    else
+        mmap_fd = (HANDLE)_get_osfhandle(fd);
+    h = CreateFileMapping(mmap_fd, NULL, flProtect, 0, end, NULL);
+    int k = GetLastError();
+    if (NULL == h) return -1;
+    DWORD dwDesiredAccess;
+    if (prot & PROT_WRITE)
+        dwDesiredAccess = FILE_MAP_WRITE;
+    else
+        dwDesiredAccess = FILE_MAP_READ;
+    void* ret = MapViewOfFile(h, dwDesiredAccess, 0, offset, len);
+    if (ret == NULL) {
+        CloseHandle(h);
+        ret = nullptr;
+    }
+    *res = ret;
+    return 0;
+}
+
+PS4_SYSV_ABI void* mmap(void* addr, u64 len, int prot, int flags, int fd, u64 offset) {
+    void* ptr;
+    // posix call the difference is that there is a different behaviour when it doesn't return 0 or SCE_OK
+    int result = sceKernelMmap(addr, len, prot, flags, fd, offset, &ptr);
+    if (result != 0) {
+        BREAKPOINT();
+    }
+    return ptr;
+}
+
 void LibKernel_Register(SymbolsResolver* sym) {
     // obj
     LIB_OBJ("f7uOxY9mM1U", "libkernel", 1, "libkernel", 1, 1, &HLE::Libs::LibKernel::g_stack_chk_guard);
@@ -41,6 +87,10 @@ void LibKernel_Register(SymbolsResolver* sym) {
     // misc
     LIB_FUNCTION("WslcK1FQcGI", "libkernel", 1, "libkernel", 1, 1, CPUManagement::sceKernelIsNeoMode);
     LIB_FUNCTION("Ou3iL1abvng", "libkernel", 1, "libkernel", 1, 1, stack_chk_fail);
+
+    LIB_FUNCTION("9BcDykPmo1I", "libkernel", 1, "libkernel", 1, 1, __Error);
+
+    LIB_FUNCTION("BPE9s9vQQXo", "libkernel", 1, "libkernel", 1, 1, mmap);
     
     Core::Libraries::LibKernel::fileSystemSymbolsRegister(sym);
     Core::Libraries::LibKernel::timeSymbolsRegister(sym);