From f18d454eb6a6912b93664ee43b7f377a9ddd0215 Mon Sep 17 00:00:00 2001 From: Yuri Kunde Schlesner Date: Fri, 5 May 2017 23:11:06 -0700 Subject: Kernel: Map special regions according to ExHeader This replaces the hardcoded VRAM/DSP mappings with ones made based on the ExHeader ARM11 Kernel caps list. While this has no visible effect for most applications (since they use a standard set of mappings) it does improve support for system modules and n3DS exclusives. --- src/core/hle/kernel/memory.cpp | 117 +++++++++++++++++++++++++++------------- src/core/hle/kernel/memory.h | 10 ++-- src/core/hle/kernel/process.cpp | 23 ++++++-- src/core/hle/kernel/process.h | 2 +- 4 files changed, 102 insertions(+), 50 deletions(-) (limited to 'src/core/hle') diff --git a/src/core/hle/kernel/memory.cpp b/src/core/hle/kernel/memory.cpp index be7c7513f..8250a90b5 100644 --- a/src/core/hle/kernel/memory.cpp +++ b/src/core/hle/kernel/memory.cpp @@ -2,11 +2,13 @@ // Licensed under GPLv2 or any later version // Refer to the license.txt file included. +#include #include #include #include #include #include "audio_core/audio_core.h" +#include "common/assert.h" #include "common/common_types.h" #include "common/logging/log.h" #include "core/hle/config_mem.h" @@ -92,57 +94,96 @@ MemoryRegionInfo* GetMemoryRegion(MemoryRegion region) { UNREACHABLE(); } } -} - -namespace Memory { -namespace { +std::array vram; +std::array n3ds_extra_ram; + +void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping) { + using namespace Memory; + + struct MemoryArea { + VAddr vaddr_base; + PAddr paddr_base; + u32 size; + }; + + // The order of entries in this array is important. The VRAM and IO VAddr ranges overlap, and + // VRAM must be tried first. + static constexpr MemoryArea memory_areas[] = { + {VRAM_VADDR, VRAM_PADDR, VRAM_SIZE}, + {IO_AREA_VADDR, IO_AREA_PADDR, IO_AREA_SIZE}, + {DSP_RAM_VADDR, DSP_RAM_PADDR, DSP_RAM_SIZE}, + {N3DS_EXTRA_RAM_VADDR, N3DS_EXTRA_RAM_PADDR, N3DS_EXTRA_RAM_SIZE - 0x20000}, + }; + + VAddr mapping_limit = mapping.address + mapping.size; + if (mapping_limit < mapping.address) { + LOG_CRITICAL(Loader, "Mapping size overflowed: address=0x%08" PRIX32 " size=0x%" PRIX32, + mapping.address, mapping.size); + return; + } -struct MemoryArea { - u32 base; - u32 size; - const char* name; -}; + auto area = + std::find_if(std::begin(memory_areas), std::end(memory_areas), [&](const auto& area) { + return mapping.address >= area.vaddr_base && + mapping_limit <= area.vaddr_base + area.size; + }); + if (area == std::end(memory_areas)) { + LOG_ERROR(Loader, "Unhandled special mapping: address=0x%08" PRIX32 " size=0x%" PRIX32 + " read_only=%d unk_flag=%d", + mapping.address, mapping.size, mapping.read_only, mapping.unk_flag); + return; + } -// We don't declare the IO regions in here since its handled by other means. -static MemoryArea memory_areas[] = { - {VRAM_VADDR, VRAM_SIZE, "VRAM"}, // Video memory (VRAM) -}; -} + u32 offset_into_region = mapping.address - area->vaddr_base; + if (area->paddr_base == IO_AREA_PADDR) { + LOG_ERROR(Loader, "MMIO mappings are not supported yet. phys_addr=0x%08" PRIX32, + area->paddr_base + offset_into_region); + return; + } -void Init() { - InitMemoryMap(); - LOG_DEBUG(HW_Memory, "initialized OK"); -} + // TODO(yuriks): Use GetPhysicalPointer when that becomes independent of the virtual + // mappings. + u8* target_pointer = nullptr; + switch (area->paddr_base) { + case VRAM_PADDR: + target_pointer = vram.data(); + break; + case DSP_RAM_PADDR: + target_pointer = AudioCore::GetDspMemory().data(); + break; + case N3DS_EXTRA_RAM_PADDR: + target_pointer = n3ds_extra_ram.data(); + break; + default: + UNREACHABLE(); + } -void InitLegacyAddressSpace(Kernel::VMManager& address_space) { - using namespace Kernel; + // TODO(yuriks): This flag seems to have some other effect, but it's unknown what + MemoryState memory_state = mapping.unk_flag ? MemoryState::Static : MemoryState::IO; - for (MemoryArea& area : memory_areas) { - auto block = std::make_shared>(area.size); - address_space - .MapMemoryBlock(area.base, std::move(block), 0, area.size, MemoryState::Private) - .Unwrap(); - } + auto vma = address_space + .MapBackingMemory(mapping.address, target_pointer + offset_into_region, + mapping.size, memory_state) + .MoveFrom(); + address_space.Reprotect(vma, + mapping.read_only ? VMAPermission::Read : VMAPermission::ReadWrite); +} +void MapSharedPages(VMManager& address_space) { auto cfg_mem_vma = address_space - .MapBackingMemory(CONFIG_MEMORY_VADDR, (u8*)&ConfigMem::config_mem, - CONFIG_MEMORY_SIZE, MemoryState::Shared) + .MapBackingMemory(Memory::CONFIG_MEMORY_VADDR, + reinterpret_cast(&ConfigMem::config_mem), + Memory::CONFIG_MEMORY_SIZE, MemoryState::Shared) .MoveFrom(); address_space.Reprotect(cfg_mem_vma, VMAPermission::Read); auto shared_page_vma = address_space - .MapBackingMemory(SHARED_PAGE_VADDR, (u8*)&SharedPage::shared_page, - SHARED_PAGE_SIZE, MemoryState::Shared) + .MapBackingMemory(Memory::SHARED_PAGE_VADDR, + reinterpret_cast(&SharedPage::shared_page), + Memory::SHARED_PAGE_SIZE, MemoryState::Shared) .MoveFrom(); address_space.Reprotect(shared_page_vma, VMAPermission::Read); - - auto& dsp_ram = AudioCore::GetDspMemory(); - auto dsp_vma = address_space - .MapBackingMemory(DSP_RAM_VADDR, dsp_ram.data(), dsp_ram.size(), - Kernel::MemoryState::IO) - .MoveFrom(); - address_space.Reprotect(dsp_vma, Kernel::VMAPermission::ReadWrite); } -} // namespace +} // namespace Kernel diff --git a/src/core/hle/kernel/memory.h b/src/core/hle/kernel/memory.h index 4e1856a41..08c1a9989 100644 --- a/src/core/hle/kernel/memory.h +++ b/src/core/hle/kernel/memory.h @@ -23,11 +23,7 @@ struct MemoryRegionInfo { void MemoryInit(u32 mem_type); void MemoryShutdown(); MemoryRegionInfo* GetMemoryRegion(MemoryRegion region); -} -namespace Memory { - -void Init(); -void InitLegacyAddressSpace(Kernel::VMManager& address_space); - -} // namespace +void HandleSpecialMapping(VMManager& address_space, const AddressMapping& mapping); +void MapSharedPages(VMManager& address_space); +} // namespace Kernel diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp index ba80fe7f8..32cb25fb7 100644 --- a/src/core/hle/kernel/process.cpp +++ b/src/core/hle/kernel/process.cpp @@ -35,7 +35,6 @@ SharedPtr Process::Create(SharedPtr code_set) { process->codeset = std::move(code_set); process->flags.raw = 0; process->flags.memory_region.Assign(MemoryRegion::APPLICATION); - Memory::InitLegacyAddressSpace(process->vm_manager); return process; } @@ -78,8 +77,15 @@ void Process::ParseKernelCaps(const u32* kernel_caps, size_t len) { AddressMapping mapping; mapping.address = descriptor << 12; - mapping.size = (end_desc << 12) - mapping.address; - mapping.writable = (descriptor & (1 << 20)) != 0; + VAddr end_address = end_desc << 12; + + if (mapping.address < end_address) { + mapping.size = end_address - mapping.address; + } else { + mapping.size = 0; + } + + mapping.read_only = (descriptor & (1 << 20)) != 0; mapping.unk_flag = (end_desc & (1 << 20)) != 0; address_mappings.push_back(mapping); @@ -88,8 +94,10 @@ void Process::ParseKernelCaps(const u32* kernel_caps, size_t len) { AddressMapping mapping; mapping.address = descriptor << 12; mapping.size = Memory::PAGE_SIZE; - mapping.writable = true; // TODO: Not sure if correct + mapping.read_only = false; mapping.unk_flag = false; + + address_mappings.push_back(mapping); } else if ((type & 0xFE0) == 0xFC0) { // 0x01FF // Kernel version kernel_version = descriptor & 0xFFFF; @@ -131,6 +139,12 @@ void Process::Run(s32 main_thread_priority, u32 stack_size) { misc_memory_used += stack_size; memory_region->used += stack_size; + // Map special address mappings + MapSharedPages(vm_manager); + for (const auto& mapping : address_mappings) { + HandleSpecialMapping(vm_manager, mapping); + } + vm_manager.LogLayout(Log::Level::Debug); Kernel::SetupMainThread(codeset->entrypoint, main_thread_priority); } @@ -138,6 +152,7 @@ void Process::Run(s32 main_thread_priority, u32 stack_size) { VAddr Process::GetLinearHeapAreaAddress() const { return kernel_version < 0x22C ? Memory::LINEAR_HEAP_VADDR : Memory::NEW_LINEAR_HEAP_VADDR; } + VAddr Process::GetLinearHeapBase() const { return GetLinearHeapAreaAddress() + memory_region->base; } diff --git a/src/core/hle/kernel/process.h b/src/core/hle/kernel/process.h index b566950b0..b52211d2a 100644 --- a/src/core/hle/kernel/process.h +++ b/src/core/hle/kernel/process.h @@ -20,7 +20,7 @@ struct AddressMapping { // Address and size must be page-aligned VAddr address; u32 size; - bool writable; + bool read_only; bool unk_flag; }; -- cgit v1.2.3