These sections are used to define the exit code executed after return from main() or a call to exit(). These all are subparts of the .text section.

The .finiN sections are executed in descending order from 9 to 0.

.finit9:

Unused. User definable. This is effectively where _exit() starts.

.fini8:

Unused. User definable.

.fini7:

Unused. User definable.

.fini6:

Unused for C programs, but used for destructors in C++ programs.

.fini5:

Unused. User definable.

.fini4:

Unused. User definable.

.fini3:

Unused. User definable.

.fini2:

Unused. User definable.

.fini1:

Unused. User definable.

.fini0:

Goes into an infinite loop after program termination and completion of any _exit() code (execution of code in the .fini9 -> .fini1 sections).