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