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memory: Clean up code

pull/15/merge
yzct12345 4 years ago
committed by GitHub
parent
a1cb453470
commit
6df9611059
No known key found for this signature in database GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 81 additions and 329 deletions
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  1. 306
      src/core/memory.cpp
  2. 104
      src/core/memory.h

306
src/core/memory.cpp
View File

@ -1,11 +1,9 @@
// Copyright 2015 Citra Emulator Project
// Copyright 2021 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <cstring>
#include <optional>
#include <utility>
#include "common/assert.h"
#include "common/atomic_ops.h"
@ -14,12 +12,10 @@
#include "common/page_table.h"
#include "common/settings.h"
#include "common/swap.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/device_memory.h"
#include "core/hle/kernel/k_page_table.h"
#include "core/hle/kernel/k_process.h"
#include "core/hle/kernel/physical_memory.h"
#include "core/memory.h"
#include "video_core/gpu.h"
@ -62,17 +58,7 @@ struct Memory::Impl {
}
}
bool IsValidVirtualAddress(const Kernel::KProcess& process, const VAddr vaddr) const {
const auto& page_table = process.PageTable().PageTableImpl();
const auto [pointer, type] = page_table.pointers[vaddr >> PAGE_BITS].PointerType();
return pointer != nullptr || type == Common::PageType::RasterizerCachedMemory;
}
bool IsValidVirtualAddress(VAddr vaddr) const {
return IsValidVirtualAddress(*system.CurrentProcess(), vaddr);
}
u8* GetPointerFromRasterizerCachedMemory(VAddr vaddr) const {
[[nodiscard]] u8* GetPointerFromRasterizerCachedMemory(VAddr vaddr) const {
const PAddr paddr{current_page_table->backing_addr[vaddr >> PAGE_BITS]};
if (!paddr) {
@ -82,7 +68,7 @@ struct Memory::Impl {
return system.DeviceMemory().GetPointer(paddr) + vaddr;
}
u8* GetPointer(const VAddr vaddr) const {
[[nodiscard]] u8* GetPointer(const VAddr vaddr) const {
const uintptr_t raw_pointer = current_page_table->pointers[vaddr >> PAGE_BITS].Raw();
if (u8* const pointer = Common::PageTable::PageInfo::ExtractPointer(raw_pointer)) {
return pointer + vaddr;
@ -179,7 +165,7 @@ struct Memory::Impl {
std::string string;
string.reserve(max_length);
for (std::size_t i = 0; i < max_length; ++i) {
const char c = Read8(vaddr);
const char c = Read<s8>(vaddr);
if (c == '\0') {
break;
}
@ -190,15 +176,14 @@ struct Memory::Impl {
return string;
}
void ReadBlock(const Kernel::KProcess& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
void WalkBlock(const Kernel::KProcess& process, VAddr addr, const std::size_t size,
auto on_unmapped, auto on_memory, auto on_rasterizer, auto increment) {
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = src_addr >> PAGE_BITS;
std::size_t page_offset = src_addr & PAGE_MASK;
std::size_t page_index = addr >> PAGE_BITS;
std::size_t page_offset = addr & PAGE_MASK;
while (remaining_size > 0) {
while (remaining_size) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
@ -206,22 +191,18 @@ struct Memory::Impl {
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
switch (type) {
case Common::PageType::Unmapped: {
LOG_ERROR(HW_Memory,
"Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
current_vaddr, src_addr, size);
std::memset(dest_buffer, 0, copy_amount);
on_unmapped(copy_amount, current_vaddr);
break;
}
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
std::memcpy(dest_buffer, src_ptr, copy_amount);
u8* mem_ptr = pointer + page_offset + (page_index << PAGE_BITS);
on_memory(copy_amount, mem_ptr);
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().FlushRegion(current_vaddr, copy_amount);
std::memcpy(dest_buffer, host_ptr, copy_amount);
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
on_rasterizer(current_vaddr, copy_amount, host_ptr);
break;
}
default:
@ -230,199 +211,98 @@ struct Memory::Impl {
page_index++;
page_offset = 0;
dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
addr += static_cast<VAddr>(copy_amount);
increment(copy_amount);
remaining_size -= copy_amount;
}
}
void ReadBlockUnsafe(const Kernel::KProcess& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = src_addr >> PAGE_BITS;
std::size_t page_offset = src_addr & PAGE_MASK;
while (remaining_size > 0) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
switch (type) {
case Common::PageType::Unmapped: {
template <bool UNSAFE>
void ReadBlockImpl(const Kernel::KProcess& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
WalkBlock(
process, src_addr, size,
[src_addr, size, &dest_buffer](const std::size_t copy_amount,
const VAddr current_vaddr) {
LOG_ERROR(HW_Memory,
"Unmapped ReadBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
current_vaddr, src_addr, size);
std::memset(dest_buffer, 0, copy_amount);
break;
}
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
const u8* const src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
},
[&dest_buffer](const std::size_t copy_amount, const u8* const src_ptr) {
std::memcpy(dest_buffer, src_ptr, copy_amount);
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
},
[&system = system, &dest_buffer](const VAddr current_vaddr,
const std::size_t copy_amount,
const u8* const host_ptr) {
if (!UNSAFE) {
system.GPU().FlushRegion(current_vaddr, copy_amount);
}
std::memcpy(dest_buffer, host_ptr, copy_amount);
break;
}
default:
UNREACHABLE();
}
page_index++;
page_offset = 0;
dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
remaining_size -= copy_amount;
}
},
[&dest_buffer](const std::size_t copy_amount) {
dest_buffer = static_cast<u8*>(dest_buffer) + copy_amount;
});
}
void ReadBlock(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
ReadBlock(*system.CurrentProcess(), src_addr, dest_buffer, size);
ReadBlockImpl<false>(*system.CurrentProcess(), src_addr, dest_buffer, size);
}
void ReadBlockUnsafe(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
ReadBlockUnsafe(*system.CurrentProcess(), src_addr, dest_buffer, size);
ReadBlockImpl<true>(*system.CurrentProcess(), src_addr, dest_buffer, size);
}
void WriteBlock(const Kernel::KProcess& process, const VAddr dest_addr, const void* src_buffer,
const std::size_t size) {
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
while (remaining_size > 0) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
switch (type) {
case Common::PageType::Unmapped: {
template <bool UNSAFE>
void WriteBlockImpl(const Kernel::KProcess& process, const VAddr dest_addr,
const void* src_buffer, const std::size_t size) {
WalkBlock(
process, dest_addr, size,
[dest_addr, size](const std::size_t copy_amount, const VAddr current_vaddr) {
LOG_ERROR(HW_Memory,
"Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
current_vaddr, dest_addr, size);
break;
}
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
},
[&src_buffer](const std::size_t copy_amount, u8* const dest_ptr) {
std::memcpy(dest_ptr, src_buffer, copy_amount);
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().InvalidateRegion(current_vaddr, copy_amount);
std::memcpy(host_ptr, src_buffer, copy_amount);
break;
}
default:
UNREACHABLE();
}
page_index++;
page_offset = 0;
src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
remaining_size -= copy_amount;
}
}
void WriteBlockUnsafe(const Kernel::KProcess& process, const VAddr dest_addr,
const void* src_buffer, const std::size_t size) {
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
while (remaining_size > 0) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
switch (type) {
case Common::PageType::Unmapped: {
LOG_ERROR(HW_Memory,
"Unmapped WriteBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
current_vaddr, dest_addr, size);
break;
}
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
std::memcpy(dest_ptr, src_buffer, copy_amount);
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
},
[&system = system, &src_buffer](const VAddr current_vaddr,
const std::size_t copy_amount, u8* const host_ptr) {
if (!UNSAFE) {
system.GPU().InvalidateRegion(current_vaddr, copy_amount);
}
std::memcpy(host_ptr, src_buffer, copy_amount);
break;
}
default:
UNREACHABLE();
}
page_index++;
page_offset = 0;
src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
remaining_size -= copy_amount;
}
},
[&src_buffer](const std::size_t copy_amount) {
src_buffer = static_cast<const u8*>(src_buffer) + copy_amount;
});
}
void WriteBlock(const VAddr dest_addr, const void* src_buffer, const std::size_t size) {
WriteBlock(*system.CurrentProcess(), dest_addr, src_buffer, size);
WriteBlockImpl<false>(*system.CurrentProcess(), dest_addr, src_buffer, size);
}
void WriteBlockUnsafe(const VAddr dest_addr, const void* src_buffer, const std::size_t size) {
WriteBlockUnsafe(*system.CurrentProcess(), dest_addr, src_buffer, size);
WriteBlockImpl<true>(*system.CurrentProcess(), dest_addr, src_buffer, size);
}
void ZeroBlock(const Kernel::KProcess& process, const VAddr dest_addr, const std::size_t size) {
const auto& page_table = process.PageTable().PageTableImpl();
std::size_t remaining_size = size;
std::size_t page_index = dest_addr >> PAGE_BITS;
std::size_t page_offset = dest_addr & PAGE_MASK;
while (remaining_size > 0) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
const auto [pointer, type] = page_table.pointers[page_index].PointerType();
switch (type) {
case Common::PageType::Unmapped: {
WalkBlock(
process, dest_addr, size,
[dest_addr, size](const std::size_t copy_amount, const VAddr current_vaddr) {
LOG_ERROR(HW_Memory,
"Unmapped ZeroBlock @ 0x{:016X} (start address = 0x{:016X}, size = {})",
current_vaddr, dest_addr, size);
break;
}
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
u8* const dest_ptr = pointer + page_offset + (page_index << PAGE_BITS);
},
[](const std::size_t copy_amount, u8* const dest_ptr) {
std::memset(dest_ptr, 0, copy_amount);
break;
}
case Common::PageType::RasterizerCachedMemory: {
u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
},
[&system = system](const VAddr current_vaddr, const std::size_t copy_amount,
u8* const host_ptr) {
system.GPU().InvalidateRegion(current_vaddr, copy_amount);
std::memset(host_ptr, 0, copy_amount);
break;
}
default:
UNREACHABLE();
}
page_index++;
page_offset = 0;
remaining_size -= copy_amount;
}
}
void ZeroBlock(const VAddr dest_addr, const std::size_t size) {
ZeroBlock(*system.CurrentProcess(), dest_addr, size);
},
[](const std::size_t copy_amount) {});
}
void CopyBlock(const Kernel::KProcess& process, VAddr dest_addr, VAddr src_addr,
@ -432,7 +312,7 @@ struct Memory::Impl {
std::size_t page_index = src_addr >> PAGE_BITS;
std::size_t page_offset = src_addr & PAGE_MASK;
while (remaining_size > 0) {
while (remaining_size) {
const std::size_t copy_amount =
std::min(static_cast<std::size_t>(PAGE_SIZE) - page_offset, remaining_size);
const auto current_vaddr = static_cast<VAddr>((page_index << PAGE_BITS) + page_offset);
@ -449,13 +329,13 @@ struct Memory::Impl {
case Common::PageType::Memory: {
DEBUG_ASSERT(pointer);
const u8* src_ptr = pointer + page_offset + (page_index << PAGE_BITS);
WriteBlock(process, dest_addr, src_ptr, copy_amount);
WriteBlockImpl<false>(process, dest_addr, src_ptr, copy_amount);
break;
}
case Common::PageType::RasterizerCachedMemory: {
const u8* const host_ptr{GetPointerFromRasterizerCachedMemory(current_vaddr)};
system.GPU().FlushRegion(current_vaddr, copy_amount);
WriteBlock(process, dest_addr, host_ptr, copy_amount);
WriteBlockImpl<false>(process, dest_addr, host_ptr, copy_amount);
break;
}
default:
@ -470,10 +350,6 @@ struct Memory::Impl {
}
}
void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size) {
return CopyBlock(*system.CurrentProcess(), dest_addr, src_addr, size);
}
void RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached) {
if (vaddr == 0) {
return;
@ -517,7 +393,6 @@ struct Memory::Impl {
case Common::PageType::Unmapped:
// It is not necessary for a process to have this region mapped into its address
// space, for example, a system module need not have a VRAM mapping.
break;
case Common::PageType::Memory:
// There can be more than one GPU region mapped per CPU region, so it's common
// that this area is already unmarked as cached.
@ -789,12 +664,11 @@ void Memory::UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size) {
impl->UnmapRegion(page_table, base, size);
}
bool Memory::IsValidVirtualAddress(const Kernel::KProcess& process, const VAddr vaddr) const {
return impl->IsValidVirtualAddress(process, vaddr);
}
bool Memory::IsValidVirtualAddress(const VAddr vaddr) const {
return impl->IsValidVirtualAddress(vaddr);
const Kernel::KProcess& process = *system.CurrentProcess();
const auto& pageTable = process.PageTable().PageTableImpl();
const auto [pointer, type] = pageTable.pointers[vaddr >> PAGE_BITS].PointerType();
return pointer != nullptr || type == Common::PageType::RasterizerCachedMemory;
}
u8* Memory::GetPointer(VAddr vaddr) {
@ -863,64 +737,38 @@ std::string Memory::ReadCString(VAddr vaddr, std::size_t max_length) {
void Memory::ReadBlock(const Kernel::KProcess& process, const VAddr src_addr, void* dest_buffer,
const std::size_t size) {
impl->ReadBlock(process, src_addr, dest_buffer, size);
impl->ReadBlockImpl<false>(process, src_addr, dest_buffer, size);
}
void Memory::ReadBlock(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
impl->ReadBlock(src_addr, dest_buffer, size);
}
void Memory::ReadBlockUnsafe(const Kernel::KProcess& process, const VAddr src_addr,
void* dest_buffer, const std::size_t size) {
impl->ReadBlockUnsafe(process, src_addr, dest_buffer, size);
}
void Memory::ReadBlockUnsafe(const VAddr src_addr, void* dest_buffer, const std::size_t size) {
impl->ReadBlockUnsafe(src_addr, dest_buffer, size);
}
void Memory::WriteBlock(const Kernel::KProcess& process, VAddr dest_addr, const void* src_buffer,
std::size_t size) {
impl->WriteBlock(process, dest_addr, src_buffer, size);
impl->WriteBlockImpl<false>(process, dest_addr, src_buffer, size);
}
void Memory::WriteBlock(const VAddr dest_addr, const void* src_buffer, const std::size_t size) {
impl->WriteBlock(dest_addr, src_buffer, size);
}
void Memory::WriteBlockUnsafe(const Kernel::KProcess& process, VAddr dest_addr,
const void* src_buffer, std::size_t size) {
impl->WriteBlockUnsafe(process, dest_addr, src_buffer, size);
}
void Memory::WriteBlockUnsafe(const VAddr dest_addr, const void* src_buffer,
const std::size_t size) {
impl->WriteBlockUnsafe(dest_addr, src_buffer, size);
}
void Memory::ZeroBlock(const Kernel::KProcess& process, VAddr dest_addr, std::size_t size) {
impl->ZeroBlock(process, dest_addr, size);
}
void Memory::ZeroBlock(VAddr dest_addr, std::size_t size) {
impl->ZeroBlock(dest_addr, size);
}
void Memory::CopyBlock(const Kernel::KProcess& process, VAddr dest_addr, VAddr src_addr,
const std::size_t size) {
impl->CopyBlock(process, dest_addr, src_addr, size);
}
void Memory::CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size) {
impl->CopyBlock(dest_addr, src_addr, size);
}
void Memory::RasterizerMarkRegionCached(VAddr vaddr, u64 size, bool cached) {
impl->RasterizerMarkRegionCached(vaddr, size, cached);
}
bool IsKernelVirtualAddress(const VAddr vaddr) {
return KERNEL_REGION_VADDR <= vaddr && vaddr < KERNEL_REGION_END;
}
} // namespace Core::Memory

104
src/core/memory.h
View File

@ -1,4 +1,4 @@
// Copyright 2014 Citra Emulator Project
// Copyright 2021 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
@ -39,11 +39,6 @@ enum : VAddr {
/// Application stack
DEFAULT_STACK_SIZE = 0x100000,
/// Kernel Virtual Address Range
KERNEL_REGION_VADDR = 0xFFFFFF8000000000,
KERNEL_REGION_SIZE = 0x7FFFE00000,
KERNEL_REGION_END = KERNEL_REGION_VADDR + KERNEL_REGION_SIZE,
};
/// Central class that handles all memory operations and state.
@ -56,7 +51,7 @@ public:
Memory& operator=(const Memory&) = delete;
Memory(Memory&&) = default;
Memory& operator=(Memory&&) = default;
Memory& operator=(Memory&&) = delete;
/**
* Resets the state of the Memory system.
@ -90,17 +85,6 @@ public:
*/
void UnmapRegion(Common::PageTable& page_table, VAddr base, u64 size);
/**
* Checks whether or not the supplied address is a valid virtual
* address for the given process.
*
* @param process The emulated process to check the address against.
* @param vaddr The virtual address to check the validity of.
*
* @returns True if the given virtual address is valid, false otherwise.
*/
bool IsValidVirtualAddress(const Kernel::KProcess& process, VAddr vaddr) const;
/**
* Checks whether or not the supplied address is a valid virtual
* address for the current process.
@ -109,7 +93,7 @@ public:
*
* @returns True if the given virtual address is valid, false otherwise.
*/
bool IsValidVirtualAddress(VAddr vaddr) const;
[[nodiscard]] bool IsValidVirtualAddress(VAddr vaddr) const;
/**
* Gets a pointer to the given address.
@ -134,7 +118,7 @@ public:
* @returns The pointer to the given address, if the address is valid.
* If the address is not valid, nullptr will be returned.
*/
const u8* GetPointer(VAddr vaddr) const;
[[nodiscard]] const u8* GetPointer(VAddr vaddr) const;
template <typename T>
const T* GetPointer(VAddr vaddr) const {
@ -327,27 +311,6 @@ public:
void ReadBlock(const Kernel::KProcess& process, VAddr src_addr, void* dest_buffer,
std::size_t size);
/**
* Reads a contiguous block of bytes from a specified process' address space.
* This unsafe version does not trigger GPU flushing.
*
* @param process The process to read the data from.
* @param src_addr The virtual address to begin reading from.
* @param dest_buffer The buffer to place the read bytes into.
* @param size The amount of data to read, in bytes.
*
* @note If a size of 0 is specified, then this function reads nothing and
* no attempts to access memory are made at all.
*
* @pre dest_buffer must be at least size bytes in length, otherwise a
* buffer overrun will occur.
*
* @post The range [dest_buffer, size) contains the read bytes from the
* process' address space.
*/
void ReadBlockUnsafe(const Kernel::KProcess& process, VAddr src_addr, void* dest_buffer,
std::size_t size);
/**
* Reads a contiguous block of bytes from the current process' address space.
*
@ -408,26 +371,6 @@ public:
void WriteBlock(const Kernel::KProcess& process, VAddr dest_addr, const void* src_buffer,
std::size_t size);
/**
* Writes a range of bytes into a given process' address space at the specified
* virtual address.
* This unsafe version does not invalidate GPU Memory.
*
* @param process The process to write data into the address space of.
* @param dest_addr The destination virtual address to begin writing the data at.
* @param src_buffer The data to write into the process' address space.
* @param size The size of the data to write, in bytes.
*
* @post The address range [dest_addr, size) in the process' address space
* contains the data that was within src_buffer.
*
* @post If an attempt is made to write into an unmapped region of memory, the writes
* will be ignored and an error will be logged.
*
*/
void WriteBlockUnsafe(const Kernel::KProcess& process, VAddr dest_addr, const void* src_buffer,
std::size_t size);
/**
* Writes a range of bytes into the current process' address space at the specified
* virtual address.
@ -467,29 +410,6 @@ public:
*/
void WriteBlockUnsafe(VAddr dest_addr, const void* src_buffer, std::size_t size);
/**
* Fills the specified address range within a process' address space with zeroes.
*
* @param process The process that will have a portion of its memory zeroed out.
* @param dest_addr The starting virtual address of the range to zero out.
* @param size The size of the address range to zero out, in bytes.
*
* @post The range [dest_addr, size) within the process' address space is
* filled with zeroes.
*/
void ZeroBlock(const Kernel::KProcess& process, VAddr dest_addr, std::size_t size);
/**
* Fills the specified address range within the current process' address space with zeroes.
*
* @param dest_addr The starting virtual address of the range to zero out.
* @param size The size of the address range to zero out, in bytes.
*
* @post The range [dest_addr, size) within the current process' address space is
* filled with zeroes.
*/
void ZeroBlock(VAddr dest_addr, std::size_t size);
/**
* Copies data within a process' address space to another location within the
* same address space.
@ -505,19 +425,6 @@ public:
void CopyBlock(const Kernel::KProcess& process, VAddr dest_addr, VAddr src_addr,
std::size_t size);
/**
* Copies data within the current process' address space to another location within the
* same address space.
*
* @param dest_addr The destination virtual address to begin copying the data into.
* @param src_addr The source virtual address to begin copying the data from.
* @param size The size of the data to copy, in bytes.
*
* @post The range [dest_addr, size) within the current process' address space
* contains the same data within the range [src_addr, size).
*/
void CopyBlock(VAddr dest_addr, VAddr src_addr, std::size_t size);
/**
* Marks each page within the specified address range as cached or uncached.
*
@ -535,7 +442,4 @@ private:
std::unique_ptr<Impl> impl;
};
/// Determines if the given VAddr is a kernel address
bool IsKernelVirtualAddress(VAddr vaddr);
} // namespace Core::Memory
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