77 lines
3.0 KiB
C++
77 lines
3.0 KiB
C++
#include "SceTypes.hpp"
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <cstdlib>
|
|
|
|
extern "C" {
|
|
int APS5_VABI scePthreadCreate(Pthread* thread, const PthreadAttr* attr, PthreadEntry entry, void* arg, const char* name);
|
|
int APS5_VABI scePthreadJoin(Pthread thread, void** retval);
|
|
int APS5_VABI scePthreadAttrInit(PthreadAttr* attr);
|
|
int APS5_VABI scePthreadAttrDestroy(PthreadAttr* attr);
|
|
int APS5_VABI scePthreadAttrGet(Pthread thread, PthreadAttr* attr);
|
|
int APS5_VABI scePthreadAttrSetstacksize(PthreadAttr* attr, std::size_t stackSize);
|
|
int APS5_VABI scePthreadAttrGetstack(const PthreadAttr* attr, void** stackAddress, std::size_t* stackSize);
|
|
Pthread APS5_VABI scePthreadSelf();
|
|
}
|
|
|
|
static constexpr int SCE_OK = 0;
|
|
static constexpr std::size_t FRAME_SIZE = 4096;
|
|
static constexpr std::size_t FRAME_MARGIN = 2 * FRAME_SIZE;
|
|
static constexpr std::size_t STACK_SIZES[] = {16384, 65536, 1u << 20, 16u << 20};
|
|
|
|
thread_local unsigned char threadLocalBlock[512 * 1024];
|
|
|
|
static void Require(bool value) { if (!value) std::abort(); }
|
|
|
|
static std::uintptr_t Descend(std::uintptr_t floor);
|
|
static std::uintptr_t (*volatile descend)(std::uintptr_t) = Descend;
|
|
|
|
static std::uintptr_t Descend(std::uintptr_t floor) {
|
|
volatile unsigned char frame[FRAME_SIZE];
|
|
frame[0] = 0x5a;
|
|
frame[FRAME_SIZE - 1] = 0xa5;
|
|
const auto here = reinterpret_cast<std::uintptr_t>(&frame[0]);
|
|
const auto deepest = here < floor + FRAME_MARGIN ? here : descend(floor);
|
|
Require(frame[0] == 0x5a && frame[FRAME_SIZE - 1] == 0xa5);
|
|
return deepest;
|
|
}
|
|
|
|
static void* APS5_VABI Worker(void* arg) {
|
|
const auto requested = *static_cast<const std::size_t*>(arg);
|
|
threadLocalBlock[0] = 1;
|
|
threadLocalBlock[sizeof(threadLocalBlock) - 1] = 2;
|
|
|
|
PthreadAttr attr = nullptr;
|
|
Require(scePthreadAttrInit(&attr) == SCE_OK);
|
|
Require(scePthreadAttrGet(scePthreadSelf(), &attr) == SCE_OK);
|
|
void* address = nullptr;
|
|
std::size_t size = 0;
|
|
Require(scePthreadAttrGetstack(&attr, &address, &size) == SCE_OK);
|
|
Require(scePthreadAttrDestroy(&attr) == SCE_OK);
|
|
Require(size == requested);
|
|
|
|
const auto begin = reinterpret_cast<std::uintptr_t>(address);
|
|
const auto local = reinterpret_cast<std::uintptr_t>(&size);
|
|
Require(local > begin && local < begin + size);
|
|
Require(local - begin + FRAME_SIZE >= requested);
|
|
const auto deepest = Descend(begin);
|
|
Require(deepest >= begin && deepest < begin + FRAME_MARGIN);
|
|
|
|
Require(threadLocalBlock[0] == 1 && threadLocalBlock[sizeof(threadLocalBlock) - 1] == 2);
|
|
return arg;
|
|
}
|
|
|
|
int main() {
|
|
for (auto stackSize : STACK_SIZES) {
|
|
PthreadAttr attr = nullptr;
|
|
Require(scePthreadAttrInit(&attr) == SCE_OK);
|
|
Require(scePthreadAttrSetstacksize(&attr, stackSize) == SCE_OK);
|
|
Pthread thread = nullptr;
|
|
Require(scePthreadCreate(&thread, &attr, Worker, &stackSize, nullptr) == SCE_OK);
|
|
Require(scePthreadAttrDestroy(&attr) == SCE_OK);
|
|
void* result = nullptr;
|
|
Require(scePthreadJoin(thread, &result) == SCE_OK);
|
|
Require(result == &stackSize);
|
|
}
|
|
}
|