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Migration Guide
===============
When switching from vacall+trampoline to callback, you need to make the
following changes to your code:
vacall+trampoline callback
----------------- --------
-- Include files --
#include "vacall/vacall.h" #include "callback/callback.h"
#include "trampoline/trampoline.h"
-- Variable declarations --
static void* trampvar;
-- Callback declaration --
static void static void
mycallback (va_alist args) mycallback (void* data, va_alist args)
{ {
void* data = trampvar; ...
...
-- Initialization --
vacall_function = &mycallback;
-- Allocating a callback --
void* trampoline = void* trampoline =
alloc_trampoline( alloc_callback(&mycallback,data);
(__TR_function)&vacall,
&trampvar,
data);
-- Testing for a callback --
if if
(is_trampoline(address) (is_callback(address)
&& (trampoline_address(address) && (callback_address(address)
== (__TR_function)&vacall) == &mycallback)
&& (trampoline_variable(address) )
== &trampvar)
)
void* data = trampoline_data(address); void* data = callback_data(address);
-- Deallocating a callback --
free_trampoline(address); free_callback(address);
-- Libraries --
libvacall.a libtrampoline.a libcallback.a
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