mirror of
https://github.com/mozilla/gecko-dev.git
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143 lines
3.3 KiB
C++
143 lines
3.3 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// This file is a .cpp file meant to be included in nsBrowserApp.cpp and other
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// similar bootstrap code. It converts wide-character windows wmain into UTF-8
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// narrow-character strings.
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#ifndef XP_WIN
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#error This file only makes sense on Windows.
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#endif
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#include "nsUTF8Utils.h"
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#include <intrin.h>
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#include <math.h>
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#include "mozilla/WindowsVersion.h"
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#ifndef XRE_DONT_PROTECT_DLL_LOAD
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#include "nsSetDllDirectory.h"
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#endif
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#if defined(__GNUC__)
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#define XRE_DONT_SUPPORT_XPSP2
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#endif
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#ifndef XRE_DONT_SUPPORT_XPSP2
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#include "WindowsCrtPatch.h"
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#endif
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#ifdef __MINGW32__
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/* MingW currently does not implement a wide version of the
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startup routines. Workaround is to implement something like
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it ourselves. See bug 411826 */
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#include <shellapi.h>
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int wmain(int argc, WCHAR **argv);
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int main(int argc, char **argv)
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{
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LPWSTR commandLine = GetCommandLineW();
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int argcw = 0;
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LPWSTR *argvw = CommandLineToArgvW(commandLine, &argcw);
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if (!argvw)
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return 127;
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int result = wmain(argcw, argvw);
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LocalFree(argvw);
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return result;
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}
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#endif /* __MINGW32__ */
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#define main NS_internal_main
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#ifndef XRE_WANT_ENVIRON
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int main(int argc, char **argv);
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#else
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int main(int argc, char **argv, char **envp);
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#endif
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static char*
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AllocConvertUTF16toUTF8(char16ptr_t arg)
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{
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// be generous... UTF16 units can expand up to 3 UTF8 units
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int len = wcslen(arg);
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char *s = new char[len * 3 + 1];
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if (!s)
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return nullptr;
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ConvertUTF16toUTF8 convert(s);
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convert.write(arg, len);
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convert.write_terminator();
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return s;
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}
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static void
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FreeAllocStrings(int argc, char **argv)
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{
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while (argc) {
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--argc;
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delete [] argv[argc];
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}
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delete [] argv;
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}
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int wmain(int argc, WCHAR **argv)
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{
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#if !defined(XRE_DONT_SUPPORT_XPSP2)
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WindowsCrtPatch::Init();
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#endif
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#if defined(_MSC_VER) && _MSC_VER < 1900 && defined(_M_X64)
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// Disable CRT use of FMA3 on non-AVX2 CPUs and on Win7RTM due to bug 1160148
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int cpuid0[4] = {0};
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int cpuid7[4] = {0};
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__cpuid(cpuid0, 0); // Get the maximum supported CPUID function
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__cpuid(cpuid7, 7); // AVX2 is function 7, subfunction 0, EBX, bit 5
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if (cpuid0[0] < 7 || !(cpuid7[1] & 0x20) || !mozilla::IsWin7SP1OrLater()) {
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_set_FMA3_enable(0);
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}
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#endif
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#ifndef XRE_DONT_PROTECT_DLL_LOAD
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mozilla::SanitizeEnvironmentVariables();
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SetDllDirectoryW(L"");
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#endif
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char **argvConverted = new char*[argc + 1];
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if (!argvConverted)
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return 127;
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for (int i = 0; i < argc; ++i) {
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argvConverted[i] = AllocConvertUTF16toUTF8(argv[i]);
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if (!argvConverted[i]) {
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return 127;
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}
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}
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argvConverted[argc] = nullptr;
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// need to save argvConverted copy for later deletion.
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char **deleteUs = new char*[argc+1];
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if (!deleteUs) {
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FreeAllocStrings(argc, argvConverted);
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return 127;
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}
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for (int i = 0; i < argc; i++)
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deleteUs[i] = argvConverted[i];
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#ifndef XRE_WANT_ENVIRON
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int result = main(argc, argvConverted);
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#else
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// Force creation of the multibyte _environ variable.
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getenv("PATH");
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int result = main(argc, argvConverted, _environ);
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#endif
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delete[] argvConverted;
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FreeAllocStrings(argc, deleteUs);
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return result;
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}
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