mirror of
https://github.com/reactos/reactos.git
synced 2024-07-15 00:46:06 +00:00
162 lines
3.2 KiB
C
162 lines
3.2 KiB
C
#include "w32knapi.h"
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HINSTANCE g_hInstance;
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HMODULE g_hModule = NULL;
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INT g_nOs;
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PSYSCALL_ENTRY g_SyscallTable;
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BOOL
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InitOsVersion()
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{
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OSVERSIONINFOW osv;
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LPWSTR pszRos;
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osv.dwOSVersionInfoSize = sizeof(osv);
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GetVersionExW(&osv);
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pszRos = osv.szCSDVersion + wcslen(osv.szCSDVersion) + 1;
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/* make sure the string is zero terminated */
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osv.szCSDVersion[127] = 0;
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/* Is ReactOS? */
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if (wcsstr(pszRos, L"ReactOS") != NULL)
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{
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printf("Running on %ls\n", pszRos);
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g_hModule = LoadLibraryW(L"w32kdll.dll");
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if (!g_hModule)
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{
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printf("w32kdll.dll not found!\n");
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return FALSE;
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}
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g_nOs = OS_REACTOS;
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return TRUE;
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}
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if (osv.dwPlatformId != VER_PLATFORM_WIN32_NT)
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{
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printf("Unsupported OS\n");
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return FALSE;
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}
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if (osv.dwMajorVersion == 5 && osv.dwMinorVersion == 1 && osv.dwBuildNumber == 2600)
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{
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printf("Running on Windows XP, build 2600\n");
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g_nOs = OS_WINDOWS;
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g_SyscallTable = SyscallTable_XP_2600;
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return TRUE;
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}
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printf("Unsupported OS\n");
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return FALSE;
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}
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static BOOL
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RosSyscall(LPWSTR lpszFunction, int cParams, void* pParams, DWORD* pResult)
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{
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DWORD ret;
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char szFunctionName[MAX_PATH];
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int ParamSize = cParams * 4;
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sprintf(szFunctionName, "%ls", lpszFunction);
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FARPROC proc = (FARPROC)GetProcAddress(g_hModule, szFunctionName);
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if (!proc)
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{
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printf("Couldn't find proc: %s\n", szFunctionName);
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return FALSE;
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}
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asm volatile
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(
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"subl %%eax, %%esp;" // calculate new stack pos
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"movl %%esp, %%edi;" // destination is stackpointer
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"cld;" // clear direction flag
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"rep movsd;" // copy params to the stack
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"call *%%edx" // call function
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: "=a" (ret)
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: "c" (cParams), "a" (ParamSize), "S"(pParams), "d"(proc)
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);
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*pResult = ret;
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return TRUE;
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}
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static PSYSCALL_ENTRY
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GetSyscallEntry(LPWSTR lpszFunction)
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{
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INT i;
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for (i = 0; g_SyscallTable[i].lpszFunction != NULL; i++)
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{
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if (wcscmp(g_SyscallTable[i].lpszFunction, lpszFunction) == 0)
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{
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return &g_SyscallTable[i];
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}
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}
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return NULL;
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}
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static BOOL
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WinSyscall(LPWSTR pszFunction, void* pParams, void* pResult)
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{
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PSYSCALL_ENTRY pEntry = GetSyscallEntry(pszFunction);
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DWORD ret;
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asm volatile ("int $0x2e\n" : "=a"(ret): "a" (pEntry->nSyscallNum), "d" (pParams));\
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*((DWORD*)pResult) = ret;
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return FALSE;
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}
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DWORD
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Syscall(LPWSTR pszFunction, int cParams, void* pParams)
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{
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DWORD dwRet = 0;
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if (g_nOs == OS_REACTOS)
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{
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RosSyscall(pszFunction, cParams, pParams, &dwRet);
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}
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else
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{
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WinSyscall(pszFunction, pParams, &dwRet);
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}
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return dwRet;
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}
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BOOL
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IsFunctionPresent(LPWSTR lpszFunction)
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{
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if (g_nOs == OS_REACTOS)
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{
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char szFunctionName[MAX_PATH];
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sprintf(szFunctionName, "%ls", lpszFunction);
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return (GetProcAddress(g_hModule, szFunctionName) != NULL);
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}
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return (GetSyscallEntry(lpszFunction) != NULL);
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}
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int APIENTRY
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WinMain(HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPSTR lpCmdLine,
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int nCmdShow)
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{
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g_hInstance = hInstance;
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printf("Win32k native API test\n");
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/* Convert to gui thread */
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IsGUIThread(TRUE);
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if (!InitOsVersion())
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{
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return 0;
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}
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printf("\n");
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TestMain(L"w32knapi.exe");
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return 0;
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}
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