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// Copyright 2014 Citra Emulator Project / PPSSPP Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#include <stdio.h>
#include <list>
#include <vector>
#include <map>
#include <string>
#include "common/common.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/thread.h"
// Real CTR struct, don't change the fields.
struct NativeThread {
//u32 Pointer to vtable
//u32 Reference count
//KProcess* Process the thread belongs to (virtual address)
//u32 Thread id
//u32* ptr = *(KThread+0x8C) - 0xB0
//u32* End-address of the page for this thread allocated in the 0xFF4XX000 region. Thus,
// if the beginning of this mapped page is 0xFF401000, this ptr would be 0xFF402000.
//KThread* Previous ? (virtual address)
//KThread* Next ? (virtual address)
};
struct ThreadWaitInfo {
u32 wait_value;
u32 timeout_ptr;
};
class Thread : public KernelObject {
public:
/*const char *GetName() { return nt.name; }*/
const char *GetTypeName() { return "Thread"; }
//void GetQuickInfo(char *ptr, int size)
//{
// sprintf(ptr, "pc= %08x sp= %08x %s %s %s %s %s %s (wt=%i wid=%i wv= %08x )",
// context.pc, context.r[13], // 13 is stack pointer
// (nt.status & THREADSTATUS_RUNNING) ? "RUN" : "",
// (nt.status & THREADSTATUS_READY) ? "READY" : "",
// (nt.status & THREADSTATUS_WAIT) ? "WAIT" : "",
// (nt.status & THREADSTATUS_SUSPEND) ? "SUSPEND" : "",
// (nt.status & THREADSTATUS_DORMANT) ? "DORMANT" : "",
// (nt.status & THREADSTATUS_DEAD) ? "DEAD" : "",
// nt.waitType,
// nt.waitID,
// waitInfo.waitValue);
//}
//static u32 GetMissingErrorCode() { return SCE_KERNEL_ERROR_UNKNOWN_THID; }
//static int GetStaticIDType() { return SCE_KERNEL_TMID_Thread; }
//int GetIDType() const { return SCE_KERNEL_TMID_Thread; }
//bool AllocateStack(u32 &stack_size) {
// FreeStack();
// bool fromTop = (nt.attr & PSP_THREAD_ATTR_LOW_STACK) == 0;
// if (nt.attr & PSP_THREAD_ATTR_KERNEL)
// {
// // Allocate stacks for kernel threads (idle) in kernel RAM
// currentStack.start = kernelMemory.Alloc(stack_size, fromTop, (std::string("stack/") + nt.name).c_str());
// }
// else
// {
// currentStack.start = userMemory.Alloc(stack_size, fromTop, (std::string("stack/") + nt.name).c_str());
// }
// if (currentStack.start == (u32)-1)
// {
// currentStack.start = 0;
// nt.initialStack = 0;
// ERROR_LOG(KERNEL, "Failed to allocate stack for thread");
// return false;
// }
// nt.initialStack = currentStack.start;
// nt.stack_size = stack_size;
// return true;
//}
//bool FillStack() {
// // Fill the stack.
// if ((nt.attr & PSP_THREAD_ATTR_NO_FILLSTACK) == 0) {
// Memory::Memset(currentStack.start, 0xFF, nt.stack_size);
// }
// context.r[MIPS_REG_SP] = currentStack.start + nt.stack_size;
// currentStack.end = context.r[MIPS_REG_SP];
// // The k0 section is 256 bytes at the top of the stack.
// context.r[MIPS_REG_SP] -= 256;
// context.r[MIPS_REG_K0] = context.r[MIPS_REG_SP];
// u32 k0 = context.r[MIPS_REG_K0];
// Memory::Memset(k0, 0, 0x100);
// Memory::Write_U32(GetUID(), k0 + 0xc0);
// Memory::Write_U32(nt.initialStack, k0 + 0xc8);
// Memory::Write_U32(0xffffffff, k0 + 0xf8);
// Memory::Write_U32(0xffffffff, k0 + 0xfc);
// // After k0 comes the arguments, which is done by sceKernelStartThread().
// Memory::Write_U32(GetUID(), nt.initialStack);
// return true;
//}
//void FreeStack() {
// if (currentStack.start != 0) {
// DEBUG_LOG(KERNEL, "Freeing thread stack %s", nt.name);
// if ((nt.attr & PSP_THREAD_ATTR_CLEAR_STACK) != 0 && nt.initialStack != 0) {
// Memory::Memset(nt.initialStack, 0, nt.stack_size);
// }
// if (nt.attr & PSP_THREAD_ATTR_KERNEL) {
// kernelMemory.Free(currentStack.start);
// }
// else {
// userMemory.Free(currentStack.start);
// }
// currentStack.start = 0;
// }
//}
//bool PushExtendedStack(u32 size) {
// u32 stack = userMemory.Alloc(size, true, (std::string("extended/") + nt.name).c_str());
// if (stack == (u32)-1)
// return false;
// pushed_stacks.push_back(currentStack);
// currentStack.start = stack;
// currentStack.end = stack + size;
// nt.initialStack = currentStack.start;
// nt.stack_size = currentStack.end - currentStack.start;
// // We still drop the threadID at the bottom and fill it, but there's no k0.
// Memory::Memset(currentStack.start, 0xFF, nt.stack_size);
// Memory::Write_U32(GetUID(), nt.initialStack);
// return true;
//}
//bool PopExtendedStack() {
// if (pushed_stacks.size() == 0) {
// return false;
// }
// userMemory.Free(currentStack.start);
// currentStack = pushed_stacks.back();
// pushed_stacks.pop_back();
// nt.initialStack = currentStack.start;
// nt.stack_size = currentStack.end - currentStack.start;
// return true;
//}
Thread() {
currentStack.start = 0;
}
// Can't use a destructor since savestates will call that too.
//void Cleanup() {
// // Callbacks are automatically deleted when their owning thread is deleted.
// for (auto it = callbacks.begin(), end = callbacks.end(); it != end; ++it)
// kernelObjects.Destroy<Callback>(*it);
// if (pushed_stacks.size() != 0)
// {
// WARN_LOG(KERNEL, "Thread ended within an extended stack");
// for (size_t i = 0; i < pushed_stacks.size(); ++i)
// userMemory.Free(pushed_stacks[i].start);
// }
// FreeStack();
//}
void setReturnValue(u32 retval);
void setReturnValue(u64 retval);
void resumeFromWait();
//bool isWaitingFor(WaitType type, int id);
//int getWaitID(WaitType type);
ThreadWaitInfo getWaitInfo();
// Utils
//inline bool isRunning() const { return (nt.status & THREADSTATUS_RUNNING) != 0; }
//inline bool isStopped() const { return (nt.status & THREADSTATUS_DORMANT) != 0; }
//inline bool isReady() const { return (nt.status & THREADSTATUS_READY) != 0; }
//inline bool isWaiting() const { return (nt.status & THREADSTATUS_WAIT) != 0; }
//inline bool isSuspended() const { return (nt.status & THREADSTATUS_SUSPEND) != 0; }
NativeThread nt;
ThreadWaitInfo waitInfo;
UID moduleId;
bool isProcessingCallbacks;
u32 currentMipscallId;
UID currentCallbackId;
ThreadContext context;
std::vector<UID> callbacks;
std::list<u32> pending_calls;
struct StackInfo {
u32 start;
u32 end;
};
// This is a stack of... stacks, since sceKernelExtendThreadStack() can recurse.
// These are stacks that aren't "active" right now, but will pop off once the func returns.
std::vector<StackInfo> pushed_stacks;
StackInfo currentStack;
// For thread end.
std::vector<UID> waiting_threads;
// Key is the callback id it was for, or if no callback, the thread id.
std::map<UID, u64> paused_waits;
};
void __KernelThreadingInit() {
}
void __KernelThreadingShutdown() {
}
//const char *__KernelGetThreadName(UID threadID);
//
//void __KernelSaveContext(ThreadContext *ctx);
//void __KernelLoadContext(ThreadContext *ctx);
//void __KernelSwitchContext(Thread *target, const char *reason);
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