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The calling convention of a given program's language may differ from the calling convention of the underlying platform, OS, or of some library being linked to. For example, on 32-bit Windows, operating system calls have the stdcall calling convention, whereas many C programs that run there use the cdecl calling convention. To accommodate these ...
In assembly, C, C++, Pascal, Modula2 and other languages, a callback function is stored internally as a function pointer. Using the same storage allows different languages to directly share callbacks without a design-time or runtime interoperability layer. For example, the Windows API is accessible via multiple languages, compilers and assemblers.
The call to d->f1() passes a B1 pointer as a parameter. The call to d->f2() passes a B2 pointer as a parameter. This second call requires a fixup to produce the correct pointer. The location of B2::f2 is not in the virtual method table for D. By comparison, a call to d->fnonvirtual() is much simpler: (*
madCodeHook is a commercial x86 and x64 API hooking and DLL injection library for C++ and Delphi. EasyHook is an open source hooking engine supporting x86 and x64 in Windows in both user and kernel land. SpyStudio Application Trace SpyStudio is an Application tracer which hook calls, displaying the results in a structured way.
Jami, with GTK/Qt GUI, also supports IAX2 protocol, for Linux, OS X, Windows GPL; Jitsi, a Java VoIP and Instant Messaging client with ZRTP encryption, for FreeBSD, Linux, OS X, Windows; LGPL; Linphone, with a core/UI separation, the GUI is using Qt libraries, for Linux, OS X, Windows, and mobile phones (Android, iPhone, Windows Phone, BlackBerry)
The Windows API is a C language-based API. [12] Functions and data structures are consumable via C syntax by including windows.h, but the API can be consumed via any programming language that can inter-operate with the API data structures and calling conventions for function calls and callbacks.
caller:; make new call frame; (some compilers may produce an 'enter' instruction instead) push ebp; save old call frame mov ebp, esp; initialize new call frame; push call arguments, in reverse; (some compilers may subtract the required space from the stack pointer,; then write each argument directly, see below.
An early 21st century mobile phone being used for a phone call. A typical phone call using a traditional phone is placed by picking the phone handset up off the base. The caller then rotary dials or presses buttons for the phone number needed to complete the call, and the call is routed to the phone which has that number. The second phone makes ...