memory: Cleanups and refactors (#324)

* memory: Various fixes

* Added (Partial) sceKernelBatchMap/sceKernelBatchMap2

* memory: Rename and implement batch unmap

* memory: Remove uneeded assert

* memory: Commonize free search routine

* memory: Contains check is inclusive

* memory: Address some alignment issues

* clang format

---------

Co-authored-by: raziel1000 <ckraziel@gmail.com>

src/core/linker.cpp

@@ -320,11 +320,15 @@ void Linker::InitTlsForThread(bool is_primary) {
     static constexpr size_t TlsAllocAlign = 0x20;
     const size_t total_tls_size = Common::AlignUp(static_tls_size, TlsAllocAlign) + TcbSize;
 
+    // If sceKernelMapNamedFlexibleMemory is being called from libkernel and addr = 0
+    // it automatically places mappings in system reserved area instead of managed.
+    static constexpr VAddr KernelAllocBase = 0x880000000ULL;
+
     // The kernel module has a few different paths for TLS allocation.
     // For SDK < 1.7 it allocates both main and secondary thread blocks using libc mspace/malloc.
     // In games compiled with newer SDK, the main thread gets mapped from flexible memory,
     // with addr = 0, so system managed area. Here we will only implement the latter.
-    void* addr_out{};
+    void* addr_out{reinterpret_cast<void*>(KernelAllocBase)};
     if (is_primary) {
         const size_t tls_aligned = Common::AlignUp(total_tls_size, 16_KB);
         const int ret = Libraries::Kernel::sceKernelMapNamedFlexibleMemory(