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NoStartup.cpp
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NoStartup.cpp
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//===- NoStartup.cpp ------------------------------------------------===//
//
// Copyright (C) 2024 Eightfold
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//===----------------------------------------------------------------===//
#include <Bootstrap/_NtModule.hpp>
#include <Common/Casting.hpp>
#include <Common/InlineMemcpy.hpp>
#include <Common/StrRef.hpp>
#include <Meta/Once.hpp>
#include <Sys/Win/Except.hpp>
#include <xcrt.hpp>
#include <Sys/Win/Console.hpp>
using namespace hc;
using namespace hc::bootstrap;
using namespace hc::sys::win;
static bool SetInDbgPrint() {
if (HcCurrentTEB()->in_debug_print) {
return true;
}
HcCurrentTEB()->in_debug_print = true;
return false;
}
static void UnsetInDbgPrint() {
HcCurrentTEB()->in_debug_print = false;
}
static NtStatus TestPrintI(const char* Str, usize N) {
static constexpr usize PrintException = 0x40010006; // DBG_PRINTEXCEPTION_C
static constexpr usize LoopSize = 512;
if (!ExceptionRecord::CheckDbgStatus())
return -1;
if (SetInDbgPrint())
return 0;
char OutBuf[LoopSize + 2];
OutBuf[LoopSize + 0] = '\n';
OutBuf[LoopSize + 1] = '\0';
auto Record = ExceptionRecord::New(
PrintException, &TestPrintI,
LoopSize + 2, OutBuf
);
while (N >= LoopSize) {
inline_memcpy(OutBuf, Str, LoopSize);
ExceptionRecord::Raise(Record);
Str += LoopSize;
N -= LoopSize;
}
Record.setArgs(N + 2, OutBuf);
inline_memcpy(OutBuf, Str, N);
OutBuf[N + 0] = '\n';
OutBuf[N + 1] = '\0';
ExceptionRecord::Raise(Record);
UnsetInDbgPrint();
return 0;
}
NtStatus TestPrint(StrRef Str) {
return TestPrintI(Str.data(), Str.size());
}
static Win64Addr GetConsoleHandle() {
return boot::HcCurrentPEB()
->process_params
->console_handle;
}
void TestPrintCon(StrRef Str) {
auto fd = FileHandle::New(GetConsoleHandle());
usize written = 0;
auto R = sys::write_console(fd, Str.data(), Str.size(), &written);
if (written != Str.size()) {
TestPrint("Failed to write string!");
TestPrint(Str);
}
}
//////////////////////////////////////////////////////////////////////////
struct Global {
~Global() { TestPrint("Global"); }
};
struct Static {
~Static() { TestPrint("Static"); }
};
static constinit int X = 1;
static constinit int Y = 1;
static constinit int Z = 1;
$Once { ::X = 2; };
$Once { ::Y = 4; };
$Once { ::Z = 8; };
void static_() {
static Static S {};
xcrt::exit(X + Y);
}
Global global {};
int main(int V, char** Args) {
if (V == 0)
return 55;
if (!GetConsoleHandle()) {
TestPrint("No console handle.");
return 1;
}
for (int Ix = 0; Ix < V; ++Ix) {
StrRef S = Args[Ix];
TestPrintCon(S);
// TestPrint(S);
}
static_();
return X + Y + Z; // Returns 14!!
}