diff options
Diffstat (limited to 'winsup/cygwin/autoload.cc')
| -rw-r--r-- | winsup/cygwin/autoload.cc | 497 |
1 files changed, 0 insertions, 497 deletions
diff --git a/winsup/cygwin/autoload.cc b/winsup/cygwin/autoload.cc deleted file mode 100644 index 020ab44..0000000 --- a/winsup/cygwin/autoload.cc +++ /dev/null @@ -1,497 +0,0 @@ -/* autoload.cc: all dynamic load stuff. - - Copyright 2000, 2001 Red Hat, Inc. - -This file is part of Cygwin. - -This software is a copyrighted work licensed under the terms of the -Cygwin license. Please consult the file "CYGWIN_LICENSE" for -details. */ - -#include "winsup.h" -#define USE_SYS_TYPES_FD_SET -#include <winsock2.h> - -/* Macro for defining "auto-load" functions. - * Note that this is self-modifying code *gasp*. - * The first invocation of a routine will trigger the loading of - * the DLL. This will then be followed by the discovery of - * the procedure's entry point, which is placed into the location - * pointed to by the stack pointer. This code then changes - * the "call" operand which invoked it to a "jmp" which will - * transfer directly to the DLL function on the next invocation. - * - * Subsequent calls to routines whose transfer address has not been - * determined will skip the "load the dll" step, starting at the - * "discovery of the entry point" step. - * - * So, immediately following the the call to one of the above routines - * we have: - * DLL info (4 bytes) Pointer to a block of information concerning - * the DLL (see below). - * DLL args (4 bytes) The number of arguments pushed on the stack by - * the call. If this is an odd value then this - * is a flag that non-existence of this function - * is not a fatal error - * func name (n bytes) asciz string containing the name of the function - * to be loaded. - * - * The DLL info block consists of the following - * load_state (4 bytes) Pointer to a word containing the routine used - * to eventually invoke the function. Initially - * points to an init function which loads the - * DLL, gets the process's load address, - * changes the contents here to point to the - * function address, and changes the call *(%eax) - * to a jmp func. If the initialization has been - * done, only the load part is done. - * DLL handle (4 bytes) The handle to use when loading the DLL. - * DLL locker (4 bytes) Word to use to avoid multi-thread access during - * initialization. - * extra init (4 bytes) Extra initialization function. - * DLL name (n bytes) asciz string containing the name of the DLL. - */ - -/* LoadDLLprime is used to prime the DLL info information, providing an - additional initialization routine to call prior to calling the first - function. */ -#define LoadDLLprime(dllname, init_also) __asm__ (" \n\ - .section ." #dllname "_info,\"w\" \n\ - .linkonce \n\ - .long std_dll_init \n\ - .long 0 \n\ - .long -1 \n\ - .long " #init_also " \n\ - .asciz \"" #dllname "\" \n\ - .text \n\ -"); - -/* Create a "decorated" name */ -#define mangle(name, n) #name "@" #n - -/* Standard DLL load macro. Invokes a fatal warning if the function isn't - found. */ -#define LoadDLLfunc(name, n, dllname) LoadDLLfuncEx (name, n, dllname, 0) - -/* Main DLL setup stuff. */ -#define LoadDLLfuncEx(name, n, dllname, notimp) \ - LoadDLLprime (dllname, dll_func_load) \ - __asm__ (" \n\ - .section ." #dllname "_text,\"wx\" \n\ - .global _" mangle (name, n) " \n\ - .global _win32_" mangle (name, n) " \n\ - .align 8 \n\ -_" mangle (name, n) ": \n\ -_win32_" mangle (name, n) ": \n\ - movl (1f),%eax \n\ - call *(%eax) \n\ -1:.long ." #dllname "_info \n\ - .long " #n "+" #notimp " \n\ - .asciz \"" #name "\" \n\ - .text \n\ -"); - -/* DLL loader helper functions used during initialization. */ - -/* The function which finds the address, given the name and overwrites - the call so that future invocations go straight to the function in - the DLL. */ -extern "C" void dll_func_load () __asm__ ("dll_func_load"); - -/* Called by the primary initialization function "init_std_dll" to - setup the stack and eliminate future calls to init_std_dll for other - functions from this DLL. */ -extern "C" void dll_chain () __asm__ ("dll_chain"); - -/* called by the secondary initialization function to call dll_func_load. */ -extern "C" void dll_chain1 () __asm__ ("dll_chain1"); - -extern "C" { - -/* FIXME: This is not thread-safe? */ -__asm__ (" \n\ -msg1: \n\ - .ascii \"couldn't dynamically determine load address for '%s' (handle %p), %E\\0\"\n\ - \n\ - .align 32 \n\ -noload: \n\ - popl %edx # Get the address of the information block\n\ - movl 4(%edx),%eax # Should we 'ignore' the lack \n\ - test $1,%eax # of this function? \n\ - jz 1f # Nope. \n\ - decl %eax # Yes. This is the # of bytes + 1 \n\ - popl %edx # Caller's caller \n\ - addl %eax,%esp # Pop off bytes \n\ - movl $127,%eax # ERROR_PROC_NOT_FOUND \n\ - pushl %eax # First argument \n\ - call _SetLastError@4 # Set it \n\ - xor %eax,%eax # Zero functional return \n\ - jmp *%edx # Return \n\ -1: \n\ - movl (%edx),%eax # Handle value \n\ - pushl 4(%eax) \n\ - leal 8(%edx),%eax # Location of name of function \n\ - push %eax \n\ - push $msg1 # The message \n\ - call ___api_fatal # Print message. Never returns \n\ - \n\ - .globl dll_func_load \n\ -dll_func_load: \n\ - movl (%esp),%eax # 'Return address' contains load info \n\ - addl $8,%eax # Address of name of function to load \n\ - pushl %eax # Second argument \n\ - movl -8(%eax),%eax # Where handle lives \n\ - movl 4(%eax),%eax # Address of Handle to DLL \n\ - pushl %eax # Handle to DLL \n\ - call _GetProcAddress@8# Load it \n\ - test %eax,%eax # Success? \n\ - jne gotit # Yes \n\ - jmp noload # Issue an error or return \n\ -gotit: \n\ - popl %ecx # Pointer to 'return address' \n\ - movb $0xe9,-7(%ecx) # Turn preceding call to a jmp *%eax \n\ - movl %eax,%edx # Save \n\ - subl %ecx,%eax # Make it relative \n\ - addl $2,%eax # Tweak \n\ - movl %eax,-6(%ecx) # Move relative address after jump \n\ - jmp *%edx # Jump to actual function \n\ - \n\ - .global dll_chain \n\ -dll_chain: \n\ - pushl %eax # Restore 'return address' \n\ - movl (%eax),%eax # Get address of DLL info block \n\ - movl $dll_func_load,(%eax) # Just load func now \n\ - jmp *%edx # Jump to next init function \n\ - \n\ -dll_chain1: \n\ - pushl %eax # Restore 'return address' \n\ - jmp *%edx # Jump to next init function \n\ -"); - -/* C representations of the two info blocks described above. - FIXME: These structures confuse gdb for some reason. GDB can print - the whole structure but has problems with the name field? */ -struct dll_info -{ - DWORD load_state; - HANDLE handle; - LONG here; - void (*init) (); - char name[]; -}; - -struct func_info -{ - struct dll_info *dll; - LONG decoration; - char name[]; -}; - -/* Mechanism for setting up info for passing to dll_chain routines. */ -union retchain -{ - struct {long high; long low;}; - long long ll; -}; - -/* The standard DLL initialization routine. */ -static long long std_dll_init () __asm__ ("std_dll_init") __attribute__ ((unused)); -static long long -std_dll_init () -{ - HANDLE h; - struct func_info *func = (struct func_info *) __builtin_return_address (0); - struct dll_info *dll = func->dll; - retchain ret; - - if (InterlockedIncrement (&dll->here)) - do - { - InterlockedDecrement (&dll->here); - Sleep (0); - } - while (InterlockedIncrement (&dll->here)); - else if (!dll->handle) - { - if ((h = LoadLibrary (dll->name)) != NULL) - dll->handle = h; - else if (!(func->decoration & 1)) - api_fatal ("could not load %s, %E", dll->name); - else - dll->handle = INVALID_HANDLE_VALUE; - } - - InterlockedDecrement (&dll->here); - - /* Kludge alert. Redirects the return address to dll_chain. */ - __asm__ __volatile__ (" \n\ - movl $dll_chain,4(%ebp) \n\ - "); - - /* Set "arguments for dll_chain. */ - ret.low = (long) dll->init; - ret.high = (long) func; - return ret.ll; -} - -/* Initialization function for winsock stuff. */ -static long long wsock_init () __asm__ ("wsock_init") __attribute__ ((unused, regparm(1))); -bool NO_COPY wsock_started = 0; -static long long -wsock_init () -{ - static LONG NO_COPY here = -1L; - struct func_info *func = (struct func_info *) __builtin_return_address (0); - struct dll_info *dll = func->dll; - - __asm__ (" \n\ - .section .ws2_32_info \n\ - .equ _ws2_32_handle,.ws2_32_info + 4 \n\ - .global _ws2_32_handle \n\ - .section .wsock32_info \n\ - .equ _wsock32_handle,.wsock32_info + 4 \n\ - .global _wsock32_handle \n\ - .text \n\ - "); - - while (InterlockedIncrement (&here)) - { - InterlockedDecrement (&here); - Sleep (0); - } - - if (!wsock_started && (winsock_active || winsock2_active)) - { - /* Don't use autoload to load WSAStartup to eliminate recursion. */ - int (*wsastartup) (int, WSADATA *); - - wsastartup = (int (*)(int, WSADATA *)) - GetProcAddress ((HMODULE) (dll->handle), "WSAStartup"); - if (wsastartup) - { - int res = wsastartup ((2<<8) | 2, &wsadata); - - debug_printf ("res %d", res); - debug_printf ("wVersion %d", wsadata.wVersion); - debug_printf ("wHighVersion %d", wsadata.wHighVersion); - debug_printf ("szDescription %s", wsadata.szDescription); - debug_printf ("szSystemStatus %s", wsadata.szSystemStatus); - debug_printf ("iMaxSockets %d", wsadata.iMaxSockets); - debug_printf ("iMaxUdpDg %d", wsadata.iMaxUdpDg); - debug_printf ("lpVendorInfo %d", wsadata.lpVendorInfo); - - wsock_started = 1; - } - } - - InterlockedDecrement (&here); - - /* Kludge alert. Redirects the return address to dll_chain1. */ - __asm__ __volatile__ (" \n\ - movl $dll_chain1,4(%ebp) \n\ - "); - - volatile retchain ret; - /* Set "arguments for dll_chain1. */ - ret.low = (long) dll_func_load; - ret.high = (long) func; - return ret.ll; -} - -LoadDLLprime (wsock32, wsock_init) -LoadDLLprime (ws2_32, wsock_init) - -LoadDLLfunc (AddAccessAllowedAce, 16, advapi32) -LoadDLLfunc (AddAccessDeniedAce, 16, advapi32) -LoadDLLfunc (AddAce, 20, advapi32) -LoadDLLfunc (AdjustTokenPrivileges, 24, advapi32) -LoadDLLfuncEx (AllocateLocallyUniqueId, 4, advapi32, 1) -LoadDLLfunc (CopySid, 12, advapi32) -LoadDLLfunc (CreateProcessAsUserA, 44, advapi32) -LoadDLLfuncEx (CryptAcquireContextA, 20, advapi32, 1) -LoadDLLfuncEx (CryptGenRandom, 12, advapi32, 1) -LoadDLLfuncEx (CryptReleaseContext, 8, advapi32, 1) -LoadDLLfunc (DeregisterEventSource, 4, advapi32) -LoadDLLfuncEx (DuplicateTokenEx, 24, advapi32, 1) -LoadDLLfunc (EqualSid, 8, advapi32) -LoadDLLfunc (GetAce, 12, advapi32) -LoadDLLfunc (GetFileSecurityA, 20, advapi32) -LoadDLLfunc (GetLengthSid, 4, advapi32) -LoadDLLfunc (GetSecurityDescriptorDacl, 16, advapi32) -LoadDLLfunc (GetSecurityDescriptorGroup, 12, advapi32) -LoadDLLfunc (GetSecurityDescriptorOwner, 12, advapi32) -LoadDLLfunc (GetSidIdentifierAuthority, 4, advapi32) -LoadDLLfunc (GetSidSubAuthority, 8, advapi32) -LoadDLLfunc (GetSidSubAuthorityCount, 4, advapi32) -LoadDLLfunc (GetTokenInformation, 20, advapi32) -LoadDLLfunc (GetUserNameA, 8, advapi32) -LoadDLLfunc (ImpersonateLoggedOnUser, 4, advapi32) -LoadDLLfunc (InitializeAcl, 12, advapi32) -LoadDLLfunc (InitializeSecurityDescriptor, 8, advapi32) -LoadDLLfunc (InitializeSid, 12, advapi32) -LoadDLLfunc (IsValidSid, 4, advapi32) -LoadDLLfunc (LogonUserA, 24, advapi32) -LoadDLLfunc (LookupAccountNameA, 28, advapi32) -LoadDLLfunc (LookupAccountNameW, 28, advapi32) -LoadDLLfunc (LookupAccountSidA, 28, advapi32) -LoadDLLfunc (LookupPrivilegeValueA, 12, advapi32) -LoadDLLfunc (LsaClose, 4, advapi32) -LoadDLLfunc (LsaEnumerateAccountRights, 16, advapi32) -LoadDLLfunc (LsaFreeMemory, 4, advapi32) -LoadDLLfunc (LsaNtStatusToWinError, 4, advapi32) -LoadDLLfunc (LsaOpenPolicy, 16, advapi32) -LoadDLLfunc (LsaQueryInformationPolicy, 12, advapi32) -LoadDLLfunc (MakeSelfRelativeSD, 12, advapi32) -LoadDLLfunc (OpenProcessToken, 12, advapi32) -LoadDLLfunc (RegCloseKey, 4, advapi32) -LoadDLLfunc (RegCreateKeyExA, 36, advapi32) -LoadDLLfunc (RegDeleteKeyA, 8, advapi32) -LoadDLLfunc (RegDeleteValueA, 8, advapi32) -LoadDLLfunc (RegLoadKeyA, 12, advapi32) -LoadDLLfunc (RegEnumKeyExA, 32, advapi32) -LoadDLLfunc (RegEnumValueA, 32, advapi32) -LoadDLLfunc (RegOpenKeyExA, 20, advapi32) -LoadDLLfunc (RegQueryValueExA, 24, advapi32) -LoadDLLfunc (RegSetValueExA, 24, advapi32) -LoadDLLfunc (RegisterEventSourceA, 8, advapi32) -LoadDLLfunc (ReportEventA, 36, advapi32) -LoadDLLfunc (RevertToSelf, 0, advapi32) -LoadDLLfunc (SetKernelObjectSecurity, 12, advapi32) -LoadDLLfunc (SetSecurityDescriptorControl, 12, advapi32) -LoadDLLfunc (SetSecurityDescriptorDacl, 16, advapi32) -LoadDLLfunc (SetSecurityDescriptorGroup, 12, advapi32) -LoadDLLfunc (SetSecurityDescriptorOwner, 12, advapi32) -LoadDLLfunc (SetTokenInformation, 16, advapi32) - -LoadDLLfunc (NetApiBufferFree, 4, netapi32) -LoadDLLfunc (NetLocalGroupEnum, 28, netapi32) -LoadDLLfunc (NetLocalGroupGetMembers, 32, netapi32) -LoadDLLfunc (NetServerEnum, 36, netapi32) -LoadDLLfunc (NetUserGetGroups, 28, netapi32) -LoadDLLfunc (NetUserGetInfo, 16, netapi32) -LoadDLLfunc (NetWkstaUserGetInfo, 12, netapi32) - -LoadDLLfuncEx (NtCreateToken, 52, ntdll, 1) -LoadDLLfuncEx (NtMapViewOfSection, 40, ntdll, 1) -LoadDLLfuncEx (NtOpenFile, 24, ntdll, 1) -LoadDLLfuncEx (NtOpenSection, 12, ntdll, 1) -LoadDLLfuncEx (NtQuerySystemInformation, 16, ntdll, 1) -LoadDLLfuncEx (NtUnmapViewOfSection, 8, ntdll, 1) -LoadDLLfuncEx (RtlInitUnicodeString, 8, ntdll, 1) -LoadDLLfuncEx (RtlNtStatusToDosError, 4, ntdll, 1) -LoadDLLfuncEx (ZwQuerySystemInformation, 16, ntdll, 1) - -LoadDLLfuncEx (GetProcessMemoryInfo, 12, psapi, 1) - -LoadDLLfuncEx (LsaDeregisterLogonProcess, 4, secur32, 1) -LoadDLLfuncEx (LsaFreeReturnBuffer, 4, secur32, 1) -LoadDLLfuncEx (LsaLogonUser, 56, secur32, 1) -LoadDLLfuncEx (LsaLookupAuthenticationPackage, 12, secur32, 1) -LoadDLLfuncEx (LsaRegisterLogonProcess, 12, secur32, 1) - -LoadDLLfunc (CharToOemA, 8, user32) -LoadDLLfunc (CharToOemBuffA, 12, user32) -LoadDLLfunc (CloseClipboard, 0, user32) -LoadDLLfunc (CreateWindowExA, 48, user32) -LoadDLLfunc (DefWindowProcA, 16, user32) -LoadDLLfunc (DispatchMessageA, 4, user32) -LoadDLLfunc (EmptyClipboard, 0, user32) -LoadDLLfunc (FindWindowA, 8, user32) -LoadDLLfunc (GetClipboardData, 4, user32) -LoadDLLfunc (GetKeyboardLayout, 4, user32) -LoadDLLfunc (GetMessageA, 16, user32) -LoadDLLfunc (GetPriorityClipboardFormat, 8, user32) -LoadDLLfunc (GetProcessWindowStation, 0, user32) -LoadDLLfunc (GetThreadDesktop, 4, user32) -LoadDLLfunc (GetUserObjectInformationA, 20, user32) -LoadDLLfunc (KillTimer, 8, user32) -LoadDLLfunc (MessageBoxA, 16, user32) -LoadDLLfunc (MsgWaitForMultipleObjects, 20, user32) -LoadDLLfunc (OemToCharBuffA, 12, user32) -LoadDLLfunc (OpenClipboard, 4, user32) -LoadDLLfunc (PeekMessageA, 20, user32) -LoadDLLfunc (PostMessageA, 16, user32) -LoadDLLfunc (PostQuitMessage, 4, user32) -LoadDLLfunc (RegisterClassA, 4, user32) -LoadDLLfunc (RegisterClipboardFormatA, 4, user32) -LoadDLLfunc (SendMessageA, 16, user32) -LoadDLLfunc (SetClipboardData, 8, user32) -LoadDLLfunc (SetTimer, 16, user32) -LoadDLLfunc (SetUserObjectSecurity, 12, user32) - -LoadDLLfuncEx (load_wsock32, 0, wsock32, 1) // non-existent function forces wsock32 load -LoadDLLfunc (WSAAsyncSelect, 16, wsock32) -LoadDLLfunc (WSACleanup, 0, wsock32) -LoadDLLfunc (WSAGetLastError, 0, wsock32) -LoadDLLfunc (WSASetLastError, 4, wsock32) -// LoadDLLfunc (WSAStartup, 8, wsock32) -LoadDLLfunc (__WSAFDIsSet, 8, wsock32) -LoadDLLfunc (accept, 12, wsock32) -LoadDLLfunc (bind, 12, wsock32) -LoadDLLfunc (closesocket, 4, wsock32) -LoadDLLfunc (connect, 12, wsock32) -LoadDLLfunc (gethostbyaddr, 12, wsock32) -LoadDLLfunc (gethostbyname, 4, wsock32) -LoadDLLfunc (gethostname, 8, wsock32) -LoadDLLfunc (getpeername, 12, wsock32) -LoadDLLfunc (getprotobyname, 4, wsock32) -LoadDLLfunc (getprotobynumber, 4, wsock32) -LoadDLLfunc (getservbyname, 8, wsock32) -LoadDLLfunc (getservbyport, 8, wsock32) -LoadDLLfunc (getsockname, 12, wsock32) -LoadDLLfunc (getsockopt, 20, wsock32) -LoadDLLfunc (inet_addr, 4, wsock32) -LoadDLLfunc (inet_network, 4, wsock32) -LoadDLLfunc (inet_ntoa, 4, wsock32) -LoadDLLfunc (ioctlsocket, 12, wsock32) -LoadDLLfunc (listen, 8, wsock32) -LoadDLLfunc (rcmd, 24, wsock32) -LoadDLLfunc (recv, 16, wsock32) -LoadDLLfunc (recvfrom, 24, wsock32) -LoadDLLfunc (rexec, 24, wsock32) -LoadDLLfunc (rresvport, 4, wsock32) -LoadDLLfunc (select, 20, wsock32) -LoadDLLfunc (send, 16, wsock32) -LoadDLLfunc (sendto, 24, wsock32) -LoadDLLfunc (setsockopt, 20, wsock32) -LoadDLLfunc (shutdown, 8, wsock32) -LoadDLLfunc (socket, 12, wsock32) - -LoadDLLfuncEx (WSACloseEvent, 4, ws2_32, 1) -LoadDLLfuncEx (WSACreateEvent, 0, ws2_32, 1) -LoadDLLfuncEx (WSADuplicateSocketA, 12, ws2_32, 1) -LoadDLLfuncEx (WSAGetOverlappedResult, 20, ws2_32, 1) -LoadDLLfuncEx (WSARecv, 28, ws2_32, 1) -LoadDLLfuncEx (WSARecvFrom, 36, ws2_32, 1) -LoadDLLfuncEx (WSASend, 28, ws2_32, 1) -LoadDLLfuncEx (WSASendTo, 36, ws2_32, 1) -LoadDLLfuncEx (WSASetEvent, 4, ws2_32, 1) -LoadDLLfuncEx (WSASocketA, 24, ws2_32, 1) -LoadDLLfuncEx (WSAWaitForMultipleEvents, 20, ws2_32, 1) - -LoadDLLfuncEx (GetIfTable, 12, iphlpapi, 1) -LoadDLLfuncEx (GetIpAddrTable, 12, iphlpapi, 1) - -LoadDLLfunc (CoInitialize, 4, ole32) -LoadDLLfunc (CoUninitialize, 0, ole32) -LoadDLLfunc (CoCreateInstance, 20, ole32) - -LoadDLLfuncEx (CancelIo, 4, kernel32, 1) -LoadDLLfuncEx (CreateHardLinkA, 12, kernel32, 1) -LoadDLLfuncEx (CreateToolhelp32Snapshot, 8, kernel32, 1) -LoadDLLfuncEx (IsDebuggerPresent, 0, kernel32, 1) -LoadDLLfuncEx (Process32First, 8, kernel32, 1) -LoadDLLfuncEx (Process32Next, 8, kernel32, 1) -LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1) -LoadDLLfunc (TryEnterCriticalSection, 4, kernel32) - -LoadDLLfuncEx (waveOutGetNumDevs, 0, winmm, 1) -LoadDLLfuncEx (waveOutOpen, 24, winmm, 1) -LoadDLLfuncEx (waveOutReset, 4, winmm, 1) -LoadDLLfuncEx (waveOutClose, 4, winmm, 1) -LoadDLLfuncEx (waveOutGetVolume, 8, winmm, 1) -LoadDLLfuncEx (waveOutSetVolume, 8, winmm, 1) -LoadDLLfuncEx (waveOutUnprepareHeader, 12, winmm, 1) -LoadDLLfuncEx (waveOutPrepareHeader, 12, winmm, 1) -LoadDLLfuncEx (waveOutWrite, 12, winmm, 1) -} |