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// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "core/core.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/svc.h"
namespace Kernel::Svc {
/// Set the process heap to a given Size. It can both extend and shrink the heap.
Result SetHeapSize(Core::System& system, VAddr* out_address, u64 size) {
LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", size);
// Validate size.
R_UNLESS(Common::IsAligned(size, HeapSizeAlignment), ResultInvalidSize);
R_UNLESS(size < MainMemorySizeMax, ResultInvalidSize);
// Set the heap size.
R_TRY(system.Kernel().CurrentProcess()->PageTable().SetHeapSize(out_address, size));
return ResultSuccess;
}
Result SetHeapSize32(Core::System& system, u32* heap_addr, u32 heap_size) {
VAddr temp_heap_addr{};
const Result result{SetHeapSize(system, &temp_heap_addr, heap_size)};
*heap_addr = static_cast<u32>(temp_heap_addr);
return result;
}
/// Maps memory at a desired address
Result MapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);
if (!Common::Is4KBAligned(addr)) {
LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
return ResultInvalidAddress;
}
if (!Common::Is4KBAligned(size)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size);
return ResultInvalidSize;
}
if (size == 0) {
LOG_ERROR(Kernel_SVC, "Size is zero");
return ResultInvalidSize;
}
if (!(addr < addr + size)) {
LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address");
return ResultInvalidMemoryRegion;
}
KProcess* const current_process{system.Kernel().CurrentProcess()};
auto& page_table{current_process->PageTable()};
if (current_process->GetSystemResourceSize() == 0) {
LOG_ERROR(Kernel_SVC, "System Resource Size is zero");
return ResultInvalidState;
}
if (!page_table.IsInsideAddressSpace(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Address is not within the address space, addr=0x{:016X}, size=0x{:016X}", addr,
size);
return ResultInvalidMemoryRegion;
}
if (page_table.IsOutsideAliasRegion(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Address is not within the alias region, addr=0x{:016X}, size=0x{:016X}", addr,
size);
return ResultInvalidMemoryRegion;
}
return page_table.MapPhysicalMemory(addr, size);
}
Result MapPhysicalMemory32(Core::System& system, u32 addr, u32 size) {
return MapPhysicalMemory(system, addr, size);
}
/// Unmaps memory previously mapped via MapPhysicalMemory
Result UnmapPhysicalMemory(Core::System& system, VAddr addr, u64 size) {
LOG_DEBUG(Kernel_SVC, "called, addr=0x{:016X}, size=0x{:X}", addr, size);
if (!Common::Is4KBAligned(addr)) {
LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, 0x{:016X}", addr);
return ResultInvalidAddress;
}
if (!Common::Is4KBAligned(size)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, 0x{:X}", size);
return ResultInvalidSize;
}
if (size == 0) {
LOG_ERROR(Kernel_SVC, "Size is zero");
return ResultInvalidSize;
}
if (!(addr < addr + size)) {
LOG_ERROR(Kernel_SVC, "Size causes 64-bit overflow of address");
return ResultInvalidMemoryRegion;
}
KProcess* const current_process{system.Kernel().CurrentProcess()};
auto& page_table{current_process->PageTable()};
if (current_process->GetSystemResourceSize() == 0) {
LOG_ERROR(Kernel_SVC, "System Resource Size is zero");
return ResultInvalidState;
}
if (!page_table.IsInsideAddressSpace(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Address is not within the address space, addr=0x{:016X}, size=0x{:016X}", addr,
size);
return ResultInvalidMemoryRegion;
}
if (page_table.IsOutsideAliasRegion(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Address is not within the alias region, addr=0x{:016X}, size=0x{:016X}", addr,
size);
return ResultInvalidMemoryRegion;
}
return page_table.UnmapPhysicalMemory(addr, size);
}
Result UnmapPhysicalMemory32(Core::System& system, u32 addr, u32 size) {
return UnmapPhysicalMemory(system, addr, size);
}
} // namespace Kernel::Svc
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