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Misc implementations and fixes. (#250)

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* Implement `sceKernelFtruncate` and `sceKernelUnlink`.

* Remove unused variable.

* Implement `sceKernelReserveVirtualRange`, misc fixes

* Fix `sceKernelReserveVirtualRange`.

* Add TODO on reserve

* Replace comment with assert.

* Add missing copyright header

* Add `UNREACHABLE` for `IOFile::Unlink`.

* Move NT API initialization out of the header

* Fix bug where files were always mapped as read only.

* `clang-format`
This commit is contained in:
Daniel R 2024-07-11 14:35:58 +02:00 • committed by GitHub
parent 989f88837d
commit 914aa10875
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GPG key ID: B5690EEEBB952194
15 changed files with 331 additions and 19 deletions
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55
src/core/memory.cpp
View file

@ -83,6 +83,25 @@ void MemoryManager::Free(PAddr phys_addr, size_t size) {
MergeAdjacent(dmem_map, dmem_area);
}
int MemoryManager::Reserve(void** out_addr, VAddr virtual_addr, size_t size, MemoryMapFlags flags,
u64 alignment) {
std::scoped_lock lk{mutex};
ASSERT_MSG(virtual_addr != 0, "TODO: Reserve address is zero - search for free space");
VAddr mapped_addr = alignment > 0 ? Common::AlignUp(virtual_addr, alignment) : virtual_addr;
// Add virtual memory area
auto& new_vma = AddMapping(mapped_addr, size);
new_vma.disallow_merge = True(flags & MemoryMapFlags::NoCoalesce);
new_vma.prot = MemoryProt::NoAccess;
new_vma.name = "";
new_vma.type = VMAType::Reserved;
*out_addr = std::bit_cast<void*>(mapped_addr);
return ORBIS_OK;
}
int MemoryManager::MapMemory(void** out_addr, VAddr virtual_addr, size_t size, MemoryProt prot,
MemoryMapFlags flags, VMAType type, std::string_view name,
bool is_exec, PAddr phys_addr, u64 alignment) {
@ -146,20 +165,37 @@ int MemoryManager::MapMemory(void** out_addr, VAddr virtual_addr, size_t size, M
int MemoryManager::MapFile(void** out_addr, VAddr virtual_addr, size_t size, MemoryProt prot,
MemoryMapFlags flags, uintptr_t fd, size_t offset) {
ASSERT(virtual_addr == 0);
virtual_addr = impl.VirtualBase();
if (virtual_addr == 0) {
virtual_addr = impl.VirtualBase();
} else {
LOG_INFO(Kernel_Vmm, "Virtual addr {:#x} with size {:#x}", virtual_addr, size);
}
VAddr mapped_addr = 0;
const size_t size_aligned = Common::AlignUp(size, 16_KB);
// Find first free area to map the file.
auto it = FindVMA(virtual_addr);
while (it->second.type != VMAType::Free || it->second.size < size_aligned) {
it++;
if (False(flags & MemoryMapFlags::Fixed)) {
auto it = FindVMA(virtual_addr);
while (it->second.type != VMAType::Free || it->second.size < size_aligned) {
it++;
}
ASSERT(it != vma_map.end());
mapped_addr = it->second.base;
}
if (True(flags & MemoryMapFlags::Fixed)) {
const auto& vma = FindVMA(virtual_addr)->second;
const size_t remaining_size = vma.base + vma.size - virtual_addr;
ASSERT_MSG((vma.type == VMAType::Free || vma.type == VMAType::Reserved) &&
remaining_size >= size);
mapped_addr = virtual_addr;
}
ASSERT(it != vma_map.end());
// Map the file.
const VAddr mapped_addr = it->second.base;
impl.MapFile(mapped_addr, size, offset, fd);
impl.MapFile(mapped_addr, size, offset, std::bit_cast<u32>(prot), fd);
// Add virtual memory area
auto& new_vma = AddMapping(mapped_addr, size_aligned);
@ -303,7 +339,8 @@ VirtualMemoryArea& MemoryManager::AddMapping(VAddr virtual_addr, size_t size) {
ASSERT_MSG(vma_handle != vma_map.end(), "Virtual address not in vm_map");
const VirtualMemoryArea& vma = vma_handle->second;
ASSERT_MSG(vma.type == VMAType::Free && vma.base <= virtual_addr,
ASSERT_MSG((vma.type == VMAType::Free || vma.type == VMAType::Reserved) &&
vma.base <= virtual_addr,
"Adding a mapping to already mapped region");
const VAddr start_in_vma = virtual_addr - vma.base;