diff options
Diffstat (limited to 'src/VBox/Runtime/r3/win/nocrt-startup-common-win.cpp')
| -rw-r--r-- | src/VBox/Runtime/r3/win/nocrt-startup-common-win.cpp | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/nocrt-startup-common-win.cpp b/src/VBox/Runtime/r3/win/nocrt-startup-common-win.cpp new file mode 100644 index 00000000..6d93053e --- /dev/null +++ b/src/VBox/Runtime/r3/win/nocrt-startup-common-win.cpp @@ -0,0 +1,211 @@ +/* $Id: nocrt-startup-common-win.cpp $ */ +/** @file + * IPRT - No-CRT - Common Windows startup code. + */ + +/* + * Copyright (C) 2006-2022 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include "internal/nocrt.h" +#include "internal/process.h" + +#include <iprt/nt/nt-and-windows.h> +#ifndef IPRT_NOCRT_WITHOUT_FATAL_WRITE +# include <iprt/assert.h> +#endif +#include <iprt/getopt.h> +#include <iprt/message.h> +#include <iprt/path.h> +#include <iprt/string.h> +#include <iprt/utf16.h> + +#include "internal/compiler-vcc.h" +#include "internal/process.h" + + +#ifdef RT_ARCH_X86 +/** + * NT 3.1 does not know about the IMAGE_SECTION_HEADER::Misc.VirtualSize field + * and will therefore not handle merging initialized and uninitialized data into + * the same section. + * + * We work around this by manually zeroing the uninitialized data before any + * other code has been executed. + */ +void rtVccWinInitBssOnNt3(void *pvImageBase) +{ + /* We are called really early on, so we must figure out the NT version + on our own. It doesn't have to be all that accurate, though, as only + NT 3.10 is affected (3.50 isn't). */ + DWORD const dwRawVer = GetVersion(); + DWORD const uMajorVer = RT_BYTE1(dwRawVer); + DWORD const uMinorVer = RT_BYTE2(dwRawVer); + if (uMajorVer != 3 || uMinorVer >= 50) + return; + + /* + * Locate the NT headers. + */ + PIMAGE_NT_HEADERS pNtHdrs; + PIMAGE_DOS_HEADER pDosHdr = (PIMAGE_DOS_HEADER)pvImageBase; + if (pDosHdr->e_magic == IMAGE_DOS_SIGNATURE) + pNtHdrs = (PIMAGE_NT_HEADERS)((uintptr_t)pvImageBase + pDosHdr->e_lfanew); + else + pNtHdrs = (PIMAGE_NT_HEADERS)pvImageBase; + if (pNtHdrs->Signature == IMAGE_NT_SIGNATURE) + { + /* + * Locate the section table and walk thru it, memsetting anything that + * wasn't loaded from the file. + */ + PIMAGE_SECTION_HEADER paSHdrs = (PIMAGE_SECTION_HEADER)( (uintptr_t)&pNtHdrs->OptionalHeader + + pNtHdrs->FileHeader.SizeOfOptionalHeader); + uint32_t const cSections = pNtHdrs->FileHeader.NumberOfSections; + for (uint32_t i = 0; i < cSections; i++) + { + if (paSHdrs[i].Misc.VirtualSize > paSHdrs[i].SizeOfRawData) + { + /* ASSUMES VirtualAddress is still an RVAs */ + uint8_t *pbToZero = (uint8_t *)pvImageBase + paSHdrs[i].VirtualAddress + paSHdrs[i].SizeOfRawData; + uint32_t const cbToZero = paSHdrs[i].Misc.VirtualSize - paSHdrs[i].SizeOfRawData; + +# if 0 /* very very crude debugging */ + const char *pszHex = "0123456789abcdef"; + char szMsg[128]; + char *psz = szMsg; + *psz++ = 'd'; *psz++ = 'b'; *psz++ = 'g'; *psz++ = ':'; *psz++ = ' '; + for (uint32_t q = 0, u = i; q < 8; q++, u >>= 4) + psz[7 - q] = pszHex[u & 0xf]; + psz += 8; + *psz++ = ':'; + *psz++ = ' '; + for (uint32_t q = 0, u = (uint32_t)pbToZero; q < 8; q++, u >>= 4) + psz[7 - q] = pszHex[u & 0xf]; + psz += 8; + *psz++ = ' '; + *psz++ = 'L'; + *psz++ = 'B'; + *psz++ = ' '; + for (uint32_t q = 0, u = cbToZero; q < 8; q++, u >>= 4) + psz[7 - q] = pszHex[u & 0xf]; + psz += 8; + *psz++ = ' '; + for (uint32_t q = 0; q < 8; q++) + *psz++ = paSHdrs[i].Name[q] ? paSHdrs[i].Name[q] : ' '; + *psz++ = ' '; *psz++ = '/'; *psz++ = ' '; *psz++ = 'v'; *psz++ = 'e'; *psz++ = 'r'; *psz++ = ' '; + *psz++ = pszHex[(uMajorVer >> 4) & 0xf]; + *psz++ = pszHex[uMajorVer & 0xf]; + *psz++ = '.'; + *psz++ = pszHex[(uMinorVer >> 4) & 0xf]; + *psz++ = pszHex[uMinorVer & 0xf]; + *psz++ = '\r'; *psz++ = '\n'; + *psz = '\0'; + DWORD cbIgn; + HANDLE hOut = RTNtCurrentPeb()->ProcessParameters->StandardOutput; + if (hOut == NULL || hOut == INVALID_HANDLE_VALUE) + hOut = RTNtCurrentPeb()->ProcessParameters->StandardError; + if (hOut == NULL || hOut == INVALID_HANDLE_VALUE) + hOut = RTNtCurrentPeb()->ProcessParameters->ConsoleHandle; + if (hOut == NULL || hOut == INVALID_HANDLE_VALUE) + hOut = GetStdHandle(STD_OUTPUT_HANDLE); + WriteFile(hOut, szMsg, psz - szMsg, &cbIgn, NULL); +# endif + + if (paSHdrs[i].Characteristics & IMAGE_SCN_MEM_WRITE) + memset(pbToZero, 0, cbToZero); + else + { + /* The section is not writable, so temporarily make it writable. */ + PVOID pvAligned = pbToZero - ((uintptr_t)pbToZero & PAGE_OFFSET_MASK); + ULONG cbAligned = RT_ALIGN_32(cbToZero + ((uintptr_t)pbToZero & PAGE_OFFSET_MASK), PAGE_SIZE); + ULONG fNewProt = paSHdrs[i].Characteristics & IMAGE_SCN_MEM_EXECUTE + ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE; + ULONG fOldProt = fNewProt; + NTSTATUS rcNt = NtProtectVirtualMemory(NtCurrentProcess(), &pvAligned, &cbAligned, fNewProt, &fOldProt); + if (NT_SUCCESS(rcNt)) + { + memset(pbToZero, 0, cbToZero); + + rcNt = NtProtectVirtualMemory(NtCurrentProcess(), &pvAligned, &cbAligned, fOldProt, &fNewProt); + } + else + RT_BREAKPOINT(); + } + } + } + } + else + RT_BREAKPOINT(); +} +#endif + + +void rtVccWinInitProcExecPath(void) +{ + WCHAR wszPath[RTPATH_MAX]; + UINT cwcPath = GetModuleFileNameW(NULL, wszPath, RT_ELEMENTS(wszPath)); + if (cwcPath) + { + char *pszDst = g_szrtProcExePath; + int rc = RTUtf16ToUtf8Ex(wszPath, cwcPath, &pszDst, sizeof(g_szrtProcExePath), &g_cchrtProcExePath); + if (RT_SUCCESS(rc)) + { + g_cchrtProcExeDir = g_offrtProcName = RTPathFilename(pszDst) - g_szrtProcExePath; + while ( g_cchrtProcExeDir >= 2 + && RTPATH_IS_SLASH(g_szrtProcExePath[g_cchrtProcExeDir - 1]) + && g_szrtProcExePath[g_cchrtProcExeDir - 2] != ':') + g_cchrtProcExeDir--; + } + else + { +#ifdef IPRT_NOCRT_WITHOUT_FATAL_WRITE + RTMsgError("initProcExecPath: RTUtf16ToUtf8Ex failed: %Rrc\n", rc); +#else + rtNoCrtFatalMsgWithRc(RT_STR_TUPLE("initProcExecPath: RTUtf16ToUtf8Ex failed: "), rc); +#endif + } + } + else + { +#ifdef IPRT_NOCRT_WITHOUT_FATAL_WRITE + RTMsgError("initProcExecPath: GetModuleFileNameW failed: %Rhrc\n", GetLastError()); +#else + rtNoCrtFatalWriteBegin(RT_STR_TUPLE("initProcExecPath: GetModuleFileNameW failed: ")); + rtNoCrtFatalWriteWinRc(GetLastError()); + rtNoCrtFatalWrite(RT_STR_TUPLE("\r\n")); +#endif + } +} + |