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kern: implement process(pagetable) init

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This commit is contained in:
Michael Scire
2020-02-19 01:22:27 -08:00
parent fba8fb539d
commit 05a3e95834
16 changed files with 502 additions and 24 deletions
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62
libraries/libmesosphere/source/kern_k_process.cpp
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@@ -17,10 +17,72 @@
namespace ams::kern {
namespace {
constexpr u64 InitialProcessIdMin = 1;
constexpr u64 InitialProcessIdMax = 0x50;
std::atomic<u64> g_initial_process_id = InitialProcessIdMin;
}
void KProcess::Finalize() {
MESOSPHERE_TODO_IMPLEMENT();
}
Result KProcess::Initialize(const ams::svc::CreateProcessParameter &params) {
MESOSPHERE_TODO_IMPLEMENT();
}
Result KProcess::Initialize(const ams::svc::CreateProcessParameter &params, const KPageGroup &pg, const u32 *caps, s32 num_caps, KResourceLimit *res_limit, KMemoryManager::Pool pool) {
MESOSPHERE_ASSERT_THIS();
MESOSPHERE_ASSERT(res_limit != nullptr);
MESOSPHERE_ABORT_UNLESS((params.code_num_pages * PageSize) / PageSize == params.code_num_pages);
/* Set members. */
this->memory_pool = pool;
this->resource_limit = resource_limit;
this->system_resource_address = Null<KVirtualAddress>;
this->system_resource_num_pages = 0;
/* Setup page table. */
/* NOTE: Nintendo passes process ID despite not having set it yet. */
/* This goes completely unused, but even so... */
{
const auto as_type = static_cast<ams::svc::CreateProcessFlag>(params.flags & ams::svc::CreateProcessFlag_AddressSpaceMask);
const bool enable_aslr = (params.flags & ams::svc::CreateProcessFlag_EnableAslr);
const bool is_app = (params.flags & ams::svc::CreateProcessFlag_IsApplication);
auto *mem_block_manager = std::addressof(is_app ? Kernel::GetApplicationMemoryBlockManager() : Kernel::GetSystemMemoryBlockManager());
auto *block_info_manager = std::addressof(Kernel::GetBlockInfoManager());
auto *pt_manager = std::addressof(Kernel::GetPageTableManager());
R_TRY(this->page_table.Initialize(this->process_id, as_type, enable_aslr, !enable_aslr, pool, params.code_address, params.code_num_pages * PageSize, mem_block_manager, block_info_manager, pt_manager));
}
auto pt_guard = SCOPE_GUARD { this->page_table.Finalize(); };
/* Ensure we can insert the code region. */
R_UNLESS(this->page_table.CanContain(params.code_address, params.code_num_pages * PageSize, KMemoryState_Code), svc::ResultInvalidMemoryRegion());
/* Map the code region. */
R_TRY(this->page_table.MapPageGroup(params.code_address, pg, KMemoryState_Code, KMemoryPermission_KernelRead));
/* Initialize capabilities. */
R_TRY(this->capabilities.Initialize(caps, num_caps, std::addressof(this->page_table)));
/* Initialize the process id. */
this->process_id = g_initial_process_id++;
MESOSPHERE_ABORT_UNLESS(InitialProcessIdMin <= this->process_id);
MESOSPHERE_ABORT_UNLESS(this->process_id <= InitialProcessIdMax);
/* Initialize the rest of the process. */
R_TRY(this->Initialize(params));
/* Open a reference to the resource limit. */
this->resource_limit->Open();
/* We succeeded! */
pt_guard.Cancel();
return ResultSuccess();
}
void KProcess::DoWorkerTask() {
MESOSPHERE_TODO_IMPLEMENT();
}