forked from suyu/suyu
125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
// Copyright 2015 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include "common/assert.h"
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#include "common/common_funcs.h"
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#include "common/logging/log.h"
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#include "common/make_unique.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/kernel/resource_limit.h"
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#include "core/hle/kernel/thread.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/mem_map.h"
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#include "core/memory.h"
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namespace Kernel {
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SharedPtr<CodeSet> CodeSet::Create(std::string name, u64 program_id) {
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SharedPtr<CodeSet> codeset(new CodeSet);
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codeset->name = std::move(name);
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codeset->program_id = program_id;
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return codeset;
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}
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CodeSet::CodeSet() {}
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CodeSet::~CodeSet() {}
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u32 Process::next_process_id;
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SharedPtr<Process> Process::Create(SharedPtr<CodeSet> code_set) {
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SharedPtr<Process> process(new Process);
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process->codeset = std::move(code_set);
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process->flags.raw = 0;
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process->flags.memory_region = MemoryRegion::APPLICATION;
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process->address_space = Common::make_unique<VMManager>();
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Memory::InitLegacyAddressSpace(*process->address_space);
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return process;
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}
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void Process::ParseKernelCaps(const u32* kernel_caps, size_t len) {
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for (size_t i = 0; i < len; ++i) {
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u32 descriptor = kernel_caps[i];
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u32 type = descriptor >> 20;
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if (descriptor == 0xFFFFFFFF) {
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// Unused descriptor entry
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continue;
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} else if ((type & 0xF00) == 0xE00) { // 0x0FFF
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// Allowed interrupts list
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LOG_WARNING(Loader, "ExHeader allowed interrupts list ignored");
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} else if ((type & 0xF80) == 0xF00) { // 0x07FF
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// Allowed syscalls mask
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unsigned int index = ((descriptor >> 24) & 7) * 24;
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u32 bits = descriptor & 0xFFFFFF;
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while (bits && index < svc_access_mask.size()) {
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svc_access_mask.set(index, bits & 1);
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++index; bits >>= 1;
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}
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} else if ((type & 0xFF0) == 0xFE0) { // 0x00FF
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// Handle table size
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handle_table_size = descriptor & 0x3FF;
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} else if ((type & 0xFF8) == 0xFF0) { // 0x007F
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// Misc. flags
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flags.raw = descriptor & 0xFFFF;
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} else if ((type & 0xFFE) == 0xFF8) { // 0x001F
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// Mapped memory range
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if (i+1 >= len || ((kernel_caps[i+1] >> 20) & 0xFFE) != 0xFF8) {
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LOG_WARNING(Loader, "Incomplete exheader memory range descriptor ignored.");
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continue;
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}
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u32 end_desc = kernel_caps[i+1];
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++i; // Skip over the second descriptor on the next iteration
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AddressMapping mapping;
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mapping.address = descriptor << 12;
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mapping.size = (end_desc << 12) - mapping.address;
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mapping.writable = (descriptor & (1 << 20)) != 0;
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mapping.unk_flag = (end_desc & (1 << 20)) != 0;
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address_mappings.push_back(mapping);
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} else if ((type & 0xFFF) == 0xFFE) { // 0x000F
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// Mapped memory page
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AddressMapping mapping;
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mapping.address = descriptor << 12;
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mapping.size = Memory::PAGE_SIZE;
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mapping.writable = true; // TODO: Not sure if correct
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mapping.unk_flag = false;
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} else if ((type & 0xFE0) == 0xFC0) { // 0x01FF
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// Kernel version
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int minor = descriptor & 0xFF;
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int major = (descriptor >> 8) & 0xFF;
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LOG_INFO(Loader, "ExHeader kernel version ignored: %d.%d", major, minor);
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} else {
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LOG_ERROR(Loader, "Unhandled kernel caps descriptor: 0x%08X", descriptor);
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}
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}
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}
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void Process::Run(s32 main_thread_priority, u32 stack_size) {
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auto MapSegment = [&](CodeSet::Segment& segment, VMAPermission permissions, MemoryState memory_state) {
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auto vma = address_space->MapMemoryBlock(segment.addr, codeset->memory,
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segment.offset, segment.size, memory_state).Unwrap();
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address_space->Reprotect(vma, permissions);
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};
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MapSegment(codeset->code, VMAPermission::ReadExecute, MemoryState::Code);
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MapSegment(codeset->rodata, VMAPermission::Read, MemoryState::Code);
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MapSegment(codeset->data, VMAPermission::ReadWrite, MemoryState::Private);
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address_space->LogLayout(Log::Level::Debug);
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Kernel::SetupMainThread(codeset->entrypoint, main_thread_priority);
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}
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Kernel::Process::Process() {}
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Kernel::Process::~Process() {}
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SharedPtr<Process> g_current_process;
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}
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