* autoload.h: Eliminate.
* autoload.cc: Pull in autoload.h. Eliminate many macros. Rewrite to avoid necessity of initialization routines. Just use a standard one. (wsock_init): New function. Moved from net.cc. * net.cc (wsock_init): Move to autoload.cc. (wsadata): Make global. * dtable.cc (dtable::build_fhandler): Use more reliable method for checking if net stuff has been loaded.
This commit is contained in:
Christopher Faylor
parent
2b0a111fcf
commit
d61b1993b3
@ -1,3 +1,14 @@
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Wed May 16 01:01:48 2001 Christopher Faylor <cgf@cygnus.com>
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* autoload.h: Eliminate.
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* autoload.cc: Pull in autoload.h. Eliminate many macros. Rewrite to
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avoid necessity of initialization routines. Just use a standard one.
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(wsock_init): New function. Moved from net.cc.
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* net.cc (wsock_init): Move to autoload.cc.
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(wsadata): Make global.
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* dtable.cc (dtable::build_fhandler): Use more reliable method for
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checking if net stuff has been loaded.
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Tue May 15 19:52:00 2001 Corinna Vinschen <corinna@vinschen.de>
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* fork.cc (fork): Eliminate superfluous call to getuid().
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@ -94,7 +105,7 @@ Fri May 11 01:04:17 2001 Christopher Faylor <cgf@cygnus.com>
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win32-style environment if they don't already exist.
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2001-05-10 Kazuhiro Fujieda <fujieda@jaist.ac.jp>
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* path.cc (mount_info::conv_to_win32_path): Treat UNC paths the same as
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paths including `:' or `\'.
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@ -262,7 +273,7 @@ Mon Apr 30 22:09:00 2001 Corinna Vinschen <corinna@vinschen.de>
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* autoload.cc: Add LoadDLLinitfunc for secur32.dll.
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Add LoadDLLfuncEx statements for AllocateLocallyUniqueId@4,
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DuplicateTokenEx@24, LsaNtStatusToWinError@4,
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DuplicateTokenEx@24, LsaNtStatusToWinError@4,
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LsaDeregisterLogonProcess@4, LsaFreeReturnBuffer@4,
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LsaLogonUser@56, LsaLookupAuthenticationPackage@12,
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LsaRegisterLogonProcess@12,
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@ -401,7 +412,7 @@ Fri Apr 27 14:02:24 2001 Christopher Faylor <cgf@cygnus.com>
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2001-04-26 Kazuhiro Fujieda <fujieda@jaist.ac.jp>
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* security.cc (alloc_sd): Add unrelated ACCESS_ALLOWED_ACE behind
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* security.cc (alloc_sd): Add unrelated ACCESS_ALLOWED_ACE behind
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the `everyone' ACE.
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Wed Apr 25 15:07:37 2001 Christopher Faylor <cgf@cygnus.com>
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@ -580,7 +591,7 @@ Sun Apr 22 00:22:00 2001 Robert Collins <rbtcollins@hotmail.com>
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(__pthread_mutex_unlock): Ditto.
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(__pthread_mutex_destroy): Ditto.
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(__pthread_mutex_setprioceiling): Ditto.
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(__pthread_mutexattr_setpshared): Support PTHREAD_PROCESS_PSHARED requests.
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(__pthread_mutexattr_setpshared): Support PTHREAD_PROCESS_PSHARED requests.
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Fri Apr 20 19:38:29 2001 Christopher Faylor <cgf@cygnus.com>
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@ -595,7 +606,7 @@ Fri Apr 20 22:25:00 2001 Corinna Vinschen <corinna@vinschen.de>
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* security.h: Add prototype for `set_process_privileges'.
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2001-04-19 Egor Duda <deo@logos-m.ru>
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* path.cc (path_conv::check): Always initialize member variables.
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Fri Apr 20 12:27:49 2001 Christopher Faylor <cgf@cygnus.com>
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@ -9,66 +9,258 @@ Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "autoload.h"
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#define USE_SYS_TYPES_FD_SET
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#include <winsock2.h>
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/* Macro for defining "auto-load" functions.
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* Note that this is self-modifying code *gasp*.
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* The first invocation of a routine will trigger the loading of
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* the DLL. This will then be followed by the discovery of
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* the procedure's entry point, which is placed into the location
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* pointed to by the stack pointer. This code then changes
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* the "call" operand which invoked it to a "jmp" which will
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* transfer directly to the DLL function on the next invocation.
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*
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* Subsequent calls to routines whose transfer address has not been
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* determined will skip the "load the dll" step, starting at the
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* "discovery of the entry point" step.
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*
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* So, immediately following the the call to one of the above routines
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* we have:
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* DLL info (4 bytes) Pointer to a block of information concerning
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* the DLL (see below).
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* DLL args (4 bytes) The number of arguments pushed on the stack by
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* the call. If this is an odd value then this
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* is a flag that non-existence of this function
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* is not a fatal error
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* func name (n bytes) asciz string containing the name of the function
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* to be loaded.
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*
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* The DLL info block consists of the following
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* load_state (4 bytes) Pointer to a word containing the routine used
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* to eventually invoke the function. Initially
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* points to an init function which loads the
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* DLL, gets the process's load address,
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* changes the contents here to point to the
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* function address, and changes the call *(%eax)
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* to a jmp func. If the initialization has been
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* done, only the load part is done.
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* DLL handle (4 bytes) The handle to use when loading the DLL.
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* DLL locker (4 bytes) Word to use to avoid multi-thread access during
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* initialization.
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* extra init (4 bytes) Extra initialization function.
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* DLL name (n bytes) asciz string containing the name of the DLL.
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*/
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/* LoadDLLprime is used to prime the DLL info information, providing an
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additional initialization routine to call prior to calling the first
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function. */
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#define LoadDLLprime(dllname, init_also) __asm__ (" \n\
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.section ." #dllname "_info,\"w\" \n\
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.linkonce \n\
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.long std_dll_init \n\
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.long 0 \n\
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.long -1 \n\
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.long " #init_also " \n\
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.asciz \"" #dllname "\" \n\
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.text \n\
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");
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/* Create a "decorated" name */
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#define mangle(name, n) #name "@" #n
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/* Standard DLL load macro. Invokes a fatal warning if the function isn't
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found. */
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#define LoadDLLfunc(name, n, dllname) LoadDLLfuncEx (name, n, dllname, 0)
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/* Main DLL setup stuff. */
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#define LoadDLLfuncEx(name, n, dllname, notimp) __asm__ ("\
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.section ." #dllname "_info,\"w\" \n\
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.linkonce \n\
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.long std_dll_init \n\
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.long 0 \n\
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.long -1 \n\
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.long dll_func_load \n\
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.asciz \"" #dllname "\" \n\
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\n\
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.section ." #dllname "_text,\"wx\" \n\
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.global _" mangle (name, n) " \n\
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.global _win32_" mangle (name, n) " \n\
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.align 8 \n\
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_" mangle (name, n) ": \n\
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_win32_" mangle (name, n) ": \n\
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movl (1f),%eax \n\
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call *(%eax) \n\
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1:.long ." #dllname "_info \n\
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.long " #n "+" #notimp " \n\
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.asciz \"" #name "\" \n\
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.text \n\
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");
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/* DLL loader helper functions used during initialization. */
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/* The function which finds the address, given the name and overwrites
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the call so that future invocations go straight to the function in
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the DLL. */
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extern "C" void dll_func_load () __asm__ ("dll_func_load");
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/* Called by the primary initialization function "init_std_dll" to
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setup the stack and eliminate future calls to init_std_dll for other
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functions from this DLL. */
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extern "C" void dll_chain () __asm__ ("dll_chain");
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/* called by the secondary initialization function to call dll_func_load. */
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extern "C" void dll_chain1 () __asm__ ("dll_chain1");
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extern "C" {
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/* This struct is unused, but it illustrates the layout of a DLL
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information block. */
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struct DLLinfo
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{
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char jmpinst[4];
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HANDLE h;
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DWORD flag;
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char name[0];
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};
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/* FIXME: This is not thread-safe! */
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__asm__ ("\n\
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msg1:\n\
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.ascii \"couldn't dynamically determine load address for '%s' (handle %p), %E\\0\"\n\
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\n\
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.align 32\n\
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noload:\n\
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popl %edx # Get the address of the information block\n\
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movl 8(%edx),%eax # Should we 'ignore' the lack\n\
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test $1,%eax # of this function?\n\
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jz 1f # Nope.\n\
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decl %eax # Yes. This is the # of bytes + 1\n\
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popl %edx # Caller's caller\n\
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addl %eax,%esp # Pop off bytes\n\
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xor %eax,%eax # Zero functional return\n\
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jmp *%edx # Return\n\
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1:\n\
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movl 4(%edx),%eax # Handle value\n\
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pushl (%eax)\n\
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leal 12(%edx),%eax # Location of name of function\n\
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push %eax\n\
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push $msg1 # The message\n\
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call ___api_fatal # Print message. Never returns\n\
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\n\
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.globl cygwin_dll_func_load\n\
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cygwin_dll_func_load:\n\
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movl (%esp),%eax # 'Return address' contains load info\n\
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addl $12,%eax # Address of name of function to load\n\
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pushl %eax # Second argument\n\
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movl -8(%eax),%eax # Address of Handle to DLL\n\
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pushl (%eax) # Handle to DLL\n\
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call _GetProcAddress@8# Load it\n\
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test %eax,%eax # Success?\n\
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jne gotit # Yes\n\
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jmp noload # Issue an error or return\n\
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gotit:\n\
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popl %ecx # Pointer to 'return address'\n\
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movb $0xe0,-1(%ecx) # Turn preceding call to a jmp *%eax\n\
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movl %eax,(%ecx) # Point dispatch to address loaded above\n\
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jmp *%eax\n\
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/* FIXME: This is not thread-safe? */
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__asm__ (" \n\
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msg1: \n\
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.ascii \"couldn't dynamically determine load address for '%s' (handle %p), %E\\0\"\n\
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\n\
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.align 32 \n\
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noload: \n\
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popl %edx # Get the address of the information block\n\
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movl 4(%edx),%eax # Should we 'ignore' the lack \n\
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test $1,%eax # of this function? \n\
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jz 1f # Nope. \n\
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decl %eax # Yes. This is the # of bytes + 1 \n\
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popl %edx # Caller's caller \n\
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addl %eax,%esp # Pop off bytes \n\
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movl $127,%eax # ERROR_PROC_NOT_FOUND \n\
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pushl %eax # First argument \n\
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call _SetLastError@4 # Set it \n\
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xor %eax,%eax # Zero functional return \n\
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jmp *%edx # Return \n\
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1: \n\
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movl (%edx),%eax # Handle value \n\
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pushl 4(%eax) \n\
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leal 8(%edx),%eax # Location of name of function \n\
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push %eax \n\
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push $msg1 # The message \n\
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call ___api_fatal # Print message. Never returns \n\
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\n\
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.globl dll_func_load \n\
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dll_func_load: \n\
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movl (%esp),%eax # 'Return address' contains load info \n\
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addl $8,%eax # Address of name of function to load \n\
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pushl %eax # Second argument \n\
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movl -8(%eax),%eax # Where handle lives \n\
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movl 4(%eax),%eax # Address of Handle to DLL \n\
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pushl %eax # Handle to DLL \n\
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call _GetProcAddress@8# Load it \n\
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test %eax,%eax # Success? \n\
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jne gotit # Yes \n\
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jmp noload # Issue an error or return \n\
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gotit: \n\
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popl %ecx # Pointer to 'return address' \n\
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movb $0xe9,-7(%ecx) # Turn preceding call to a jmp *%eax \n\
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movl %eax,%edx # Save \n\
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subl %ecx,%eax # Make it relative \n\
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addl $2,%eax # Tweak \n\
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movl %eax,-6(%ecx) # Move relative address after jump \n\
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jmp *%edx # Jump to actual function \n\
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\n\
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.global dll_chain \n\
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dll_chain: \n\
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pushl %eax # Restore 'return address' \n\
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movl (%eax),%eax # Get address of DLL info block \n\
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movl $dll_func_load,(%eax) # Just load func now \n\
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jmp *%edx # Jump to next init function \n\
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||||
\n\
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dll_chain1: \n\
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||||
pushl %eax # Restore 'return address' \n\
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||||
jmp *%edx # Jump to next init function \n\
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||||
");
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||||
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||||
int
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std_dll_init (HANDLE &dll_handle, const char *dll_name, LONG &here)
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/* C representations of the two info blocks described above.
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||||
FIXME: These structures confuse gdb for some reason. GDB can print
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||||
the whole structure but has problems with the name field? */
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||||
struct dll_info
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||||
{
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||||
DWORD load_state;
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||||
HANDLE handle;
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||||
LONG here;
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||||
void (*init) ();
|
||||
char name[];
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||||
};
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||||
|
||||
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;
|
||||
extern WSADATA wsadata;
|
||||
struct func_info *func = (struct func_info *) __builtin_return_address (0);
|
||||
struct dll_info *dll = func->dll;
|
||||
retchain ret;
|
||||
|
||||
__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))
|
||||
{
|
||||
@ -76,48 +268,46 @@ std_dll_init (HANDLE &dll_handle, const char *dll_name, LONG &here)
|
||||
Sleep (0);
|
||||
}
|
||||
|
||||
if (dll_handle)
|
||||
/* nothing to do */;
|
||||
else if ((h = LoadLibrary (dll_name)) != NULL)
|
||||
dll_handle = h;
|
||||
else
|
||||
api_fatal ("could not load %s, %E", dll_name);
|
||||
if (!wsock_started && (wsock32_handle || ws2_32_handle))
|
||||
{
|
||||
/* 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);
|
||||
return 0;
|
||||
|
||||
/* Kludge alert. Redirects the return address to dll_chain1. */
|
||||
__asm__ __volatile__ (" \n\
|
||||
movl $dll_chain1,4(%ebp) \n\
|
||||
");
|
||||
|
||||
/* Set "arguments for dll_chain1. */
|
||||
ret.low = (long) dll_func_load;
|
||||
ret.high = (long) func;
|
||||
return ret.ll;
|
||||
}
|
||||
|
||||
LoadDLLinitfunc (advapi32)
|
||||
LoadDLLinitfunc (netapi32)
|
||||
LoadDLLinitfunc (ntdll)
|
||||
LoadDLLinitfunc (secur32)
|
||||
LoadDLLinitfunc (user32)
|
||||
LoadDLLinitfunc (iphlpapi)
|
||||
LoadDLLinitfunc (ole32)
|
||||
LoadDLLinitfunc (kernel32)
|
||||
LoadDLLinitfunc (winmm)
|
||||
LoadDLLprime (wsock32, wsock_init)
|
||||
LoadDLLprime (ws2_32, wsock_init)
|
||||
|
||||
extern void wsock_init ();
|
||||
|
||||
LoadDLLinitfuncdef (wsock32)
|
||||
{
|
||||
LoadDLLstdfunc (wsock32);
|
||||
wsock_init ();
|
||||
return 0;
|
||||
}
|
||||
|
||||
LoadDLLinitfuncdef (ws2_32)
|
||||
{
|
||||
LoadDLLstdfunc (ws2_32);
|
||||
wsock_init ();
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void __stdcall dummy_autoload (void) __attribute__ ((unused));
|
||||
static void __stdcall
|
||||
dummy_autoload (void)
|
||||
{
|
||||
LoadDLLinit (advapi32)
|
||||
LoadDLLfunc (AddAccessAllowedAce, 16, advapi32)
|
||||
LoadDLLfunc (AddAccessDeniedAce, 16, advapi32)
|
||||
LoadDLLfunc (AddAce, 20, advapi32)
|
||||
@ -174,12 +364,10 @@ LoadDLLfunc (SetSecurityDescriptorGroup, 12, advapi32)
|
||||
LoadDLLfunc (SetSecurityDescriptorOwner, 12, advapi32)
|
||||
LoadDLLfunc (SetTokenInformation, 16, advapi32)
|
||||
|
||||
LoadDLLinit (netapi32)
|
||||
LoadDLLfunc (NetWkstaUserGetInfo, 12, netapi32)
|
||||
LoadDLLfunc (NetUserGetInfo, 16, netapi32)
|
||||
LoadDLLfunc (NetApiBufferFree, 4, netapi32)
|
||||
|
||||
LoadDLLinit (ntdll)
|
||||
LoadDLLfuncEx (NtMapViewOfSection, 40, ntdll, 1)
|
||||
LoadDLLfuncEx (NtOpenSection, 12, ntdll, 1)
|
||||
LoadDLLfuncEx (NtQuerySystemInformation, 16, ntdll, 1)
|
||||
@ -188,14 +376,12 @@ LoadDLLfuncEx (RtlInitUnicodeString, 8, ntdll, 1)
|
||||
LoadDLLfuncEx (RtlNtStatusToDosError, 4, ntdll, 1)
|
||||
LoadDLLfuncEx (ZwQuerySystemInformation, 16, ntdll, 1)
|
||||
|
||||
LoadDLLinit (secur32)
|
||||
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)
|
||||
|
||||
LoadDLLinit (user32)
|
||||
LoadDLLfunc (CharToOemA, 8, user32)
|
||||
LoadDLLfunc (CharToOemBuffA, 12, user32)
|
||||
LoadDLLfunc (CloseClipboard, 0, user32)
|
||||
@ -226,7 +412,6 @@ LoadDLLfunc (SetClipboardData, 8, user32)
|
||||
LoadDLLfunc (SetTimer, 16, user32)
|
||||
LoadDLLfunc (SetUserObjectSecurity, 12, user32)
|
||||
|
||||
LoadDLLinit (wsock32)
|
||||
LoadDLLfunc (WSAAsyncSelect, 16, wsock32)
|
||||
LoadDLLfunc (WSACleanup, 0, wsock32)
|
||||
LoadDLLfunc (WSAGetLastError, 0, wsock32)
|
||||
@ -264,7 +449,6 @@ LoadDLLfunc (setsockopt, 20, wsock32)
|
||||
LoadDLLfunc (shutdown, 8, wsock32)
|
||||
LoadDLLfunc (socket, 12, wsock32)
|
||||
|
||||
LoadDLLinit (ws2_32)
|
||||
LoadDLLfuncEx (WSACloseEvent, 4, ws2_32, 1)
|
||||
LoadDLLfuncEx (WSACreateEvent, 0, ws2_32, 1)
|
||||
LoadDLLfuncEx (WSADuplicateSocketA, 12, ws2_32, 1)
|
||||
@ -277,19 +461,15 @@ LoadDLLfuncEx (WSASetEvent, 4, ws2_32, 1)
|
||||
LoadDLLfuncEx (WSASocketA, 24, ws2_32, 1)
|
||||
LoadDLLfuncEx (WSAWaitForMultipleEvents, 20, ws2_32, 1)
|
||||
|
||||
LoadDLLinit (iphlpapi)
|
||||
LoadDLLfuncEx (GetIfTable, 12, iphlpapi, 1)
|
||||
LoadDLLfuncEx (GetIpAddrTable, 12, iphlpapi, 1)
|
||||
|
||||
LoadDLLinit (ole32)
|
||||
LoadDLLfunc (CoInitialize, 4, ole32)
|
||||
LoadDLLfunc (CoUninitialize, 0, ole32)
|
||||
LoadDLLfunc (CoCreateInstance, 20, ole32)
|
||||
|
||||
LoadDLLinit (kernel32)
|
||||
LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1)
|
||||
|
||||
LoadDLLinit (winmm)
|
||||
LoadDLLfuncEx (waveOutGetNumDevs, 0, winmm, 1)
|
||||
LoadDLLfuncEx (waveOutOpen, 24, winmm, 1)
|
||||
LoadDLLfuncEx (waveOutReset, 4, winmm, 1)
|
||||
@ -300,4 +480,3 @@ LoadDLLfuncEx (waveOutUnprepareHeader, 12, winmm, 1)
|
||||
LoadDLLfuncEx (waveOutPrepareHeader, 12, winmm, 1)
|
||||
LoadDLLfuncEx (waveOutWrite, 12, winmm, 1)
|
||||
}
|
||||
}
|
||||
|
||||
@ -1,92 +0,0 @@
|
||||
/* autoload.h: Define functions for auto-loading symbols from a DLL.
|
||||
|
||||
Copyright 1999, 2000 Cygnus Solutions.
|
||||
|
||||
Written by Christopher Faylor <cgf@cygnus.com>
|
||||
|
||||
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. */
|
||||
|
||||
#define LoadDLLinitfunc(dllname) \
|
||||
LoadDLLinitfuncdef(dllname) \
|
||||
{ \
|
||||
return LoadDLLstdfunc(dllname); \
|
||||
}
|
||||
|
||||
#define LoadDLLinitfuncdef(dllname) \
|
||||
HANDLE NO_COPY dllname ## _handle = NULL; \
|
||||
LONG NO_COPY dllname ## _here = -1L; \
|
||||
/*static*/ int dllname ## _init () __asm__ (#dllname "_init"); \
|
||||
/*static*/ int dllname ## _init ()
|
||||
|
||||
#define LoadDLLstdfunc(dllname) \
|
||||
std_dll_init (dllname ## _handle, #dllname ".dll", dllname ## _here)
|
||||
|
||||
#define LoadDLLinitnow(dllname) \
|
||||
({__asm__ ("movl $cygwin_dll_func_load, " #dllname "_init_holder"); dllname##_init ();})
|
||||
|
||||
#define _LoadDLLinitnow(dllname) \
|
||||
__asm__ ("movl $cygwin_dll_func_load, " #dllname "_init_holder"); \
|
||||
__asm__ ("call " #dllname "_init"); \
|
||||
|
||||
#define LoadDLLinit(dllname) \
|
||||
__asm__ (".section .data_cygwin_nocopy,\"w\""); \
|
||||
__asm__ (#dllname "_init_holder: .long " #dllname "_init_and_load"); \
|
||||
__asm__ (".text"); \
|
||||
__asm__ (#dllname "_init_and_load:"); \
|
||||
_LoadDLLinitnow (dllname); \
|
||||
__asm__ ("jmp cygwin_dll_func_load");
|
||||
|
||||
|
||||
/* 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 DLL" step.
|
||||
*
|
||||
* So, immediately following the the call to one of the above routines
|
||||
* we have:
|
||||
* foojmp (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 %eax. If the initialization has been
|
||||
* done, only the load part is done.
|
||||
* DLL handle (4 bytes) The handle to use when loading the DLL.
|
||||
* flag (4 bytes) If "TRUE" then it is not a fatal error if this
|
||||
* function cannot be found. Instead, error is set
|
||||
* to ERROR_PROC_NOT_FOUND and 0 is returned.
|
||||
* func name (n bytes) asciz string containing the name of the function
|
||||
* to be loaded.
|
||||
*/
|
||||
|
||||
#define LoadDLLmangle(name, n) #name "@" #n
|
||||
#define LoadDLLfunc(name, n, dllname) LoadDLLfuncEx (name, n, dllname, 0)
|
||||
#define LoadDLLfuncEx(name, n, dllname, notimp) \
|
||||
__asm__ (".section .data_cygwin_nocopy,\"w\""); \
|
||||
__asm__ (".global _" LoadDLLmangle (name, n)); \
|
||||
__asm__ (".global _win32_" LoadDLLmangle (name, n)); \
|
||||
__asm__ (".align 8"); \
|
||||
__asm__ ("_" LoadDLLmangle (name, n) ":"); \
|
||||
__asm__ ("_win32_" LoadDLLmangle (name, n) ":"); \
|
||||
__asm__ ("movl (" #name "jump),%eax"); \
|
||||
__asm__ ("call *(%eax)"); \
|
||||
__asm__ (#name "jump: .long " #dllname "_init_holder"); \
|
||||
__asm__ (" .long _" #dllname "_handle"); \
|
||||
__asm__ (" .long " #n "+" #notimp); \
|
||||
__asm__ (".asciz \"" #name "\""); \
|
||||
__asm__ (".text"); \
|
||||
|
||||
extern "C" void cygwin_dll_func_load () __asm__ ("cygwin_dll_func_load");
|
||||
@ -217,6 +217,7 @@ dtable::build_fhandler (int fd, const char *name, HANDLE handle)
|
||||
{
|
||||
int unit;
|
||||
DWORD devn;
|
||||
extern bool wsock_started;
|
||||
|
||||
if ((devn = get_device_number (name, unit)) == FH_BAD)
|
||||
{
|
||||
@ -231,7 +232,7 @@ dtable::build_fhandler (int fd, const char *name, HANDLE handle)
|
||||
devn = FH_CONIN;
|
||||
else if (GetConsoleScreenBufferInfo (handle, &cinfo))
|
||||
devn= FH_CONOUT;
|
||||
else if (wsock32_handle && getpeername ((SOCKET) handle, &sa, &sal))
|
||||
else if (wsock_started && getpeername ((SOCKET) handle, &sa, &sal))
|
||||
devn = FH_SOCKET;
|
||||
else if (GetFileType (handle) == FILE_TYPE_PIPE)
|
||||
devn = FH_PIPE;
|
||||
|
||||
@ -103,7 +103,7 @@ wsock_event::wait (int socket, LPDWORD flags)
|
||||
return ret;
|
||||
}
|
||||
|
||||
static WSADATA wsadata;
|
||||
WSADATA wsadata;
|
||||
|
||||
/* Cygwin internal */
|
||||
static SOCKET __stdcall
|
||||
@ -2065,42 +2065,3 @@ extern "C" void
|
||||
endhostent (void)
|
||||
{
|
||||
}
|
||||
|
||||
extern "C" void
|
||||
wsock_init ()
|
||||
{
|
||||
static LONG NO_COPY here = -1L;
|
||||
static int NO_COPY wsock_started = 0;
|
||||
|
||||
while (InterlockedIncrement (&here))
|
||||
{
|
||||
InterlockedDecrement (&here);
|
||||
Sleep (0);
|
||||
}
|
||||
if (!wsock_started && (wsock32_handle || ws2_32_handle))
|
||||
{
|
||||
/* Don't use autoload to load WSAStartup to eliminate recursion. */
|
||||
int (*wsastartup) (int, WSADATA *);
|
||||
|
||||
wsastartup = (int (*)(int, WSADATA *))
|
||||
GetProcAddress ((HMODULE) (wsock32_handle ?: ws2_32_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);
|
||||
}
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user