This is all "#if defined(__i386__) && __GNUC__ >= 2":

This is all "#if defined(__i386__) && __GNUC__ >= 2":

Add support for GCC's --test-coverage --profile-arcs options.

Add code to call the functions listed in the .ctors section, these are
used to string the per .o file counter blocks into a linked list.

Add empty __bb_fork_func() to cope with GCC magic gandling of exec*()
named functions.

To add support for other platforms should be trivial, but involves
determining the exact data-types gcc uses on that platform.