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kernel/svc: Implement svcMapProcessCodeMemory

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This is utilized for mapping code modules into memory. Notably, the
ldr service would call this in order to map objects into memory.
This commit is contained in:
Lioncash
2019-04-11 23:21:13 -04:00
parent ea80e2bc57
commit 76a2465655
4 changed files with 131 additions and 1 deletions
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29
src/core/hle/kernel/vm_manager.cpp
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@ -302,6 +302,35 @@ ResultVal<VAddr> VMManager::SetHeapSize(u64 size) {
return MakeResult<VAddr>(heap_region_base);
}
ResultCode VMManager::MapCodeMemory(VAddr dst_address, VAddr src_address, u64 size) {
constexpr auto ignore_attribute = MemoryAttribute::LockedForIPC | MemoryAttribute::DeviceMapped;
const auto src_check_result = CheckRangeState(
src_address, size, MemoryState::All, MemoryState::Heap, VMAPermission::All,
VMAPermission::ReadWrite, MemoryAttribute::Mask, MemoryAttribute::None, ignore_attribute);
if (src_check_result.Failed()) {
return src_check_result.Code();
}
const auto mirror_result =
MirrorMemory(dst_address, src_address, size, MemoryState::ModuleCode);
if (mirror_result.IsError()) {
return mirror_result;
}
// Ensure we lock the source memory region.
const auto src_vma_result = CarveVMARange(src_address, size);
if (src_vma_result.Failed()) {
return src_vma_result.Code();
}
auto src_vma_iter = *src_vma_result;
src_vma_iter->second.attribute = MemoryAttribute::Locked;
Reprotect(src_vma_iter, VMAPermission::Read);
// The destination memory region is fine as is, however we need to make it read-only.
return ReprotectRange(dst_address, size, VMAPermission::Read);
}
MemoryInfo VMManager::QueryMemory(VAddr address) const {
const auto vma = FindVMA(address);
MemoryInfo memory_info{};