Process Startup - Dynamic Program

csu objects still linked in to program
Kernel sets up stack the similar to static programs but also add adds auxiliary vector data to stack
AUXV data includes information interpreter needs:
to inspect the program's elf data structures
address of program entry point
Kernel mmaps the interpreter (ld.so) and transfers control to it instead of the program directly
ld.so's entry point is _dl_start
_dl_start is similar assembly to crt0 but calls ld.so's _dl_boot_bind() and _dl_boot() functions
_dl_boot_bind() relocates ld.so itself and sets up a local copy of the AUXV data
_dl_boot() uses the AUXV data to:
load and relocate the shared libs the program requires
return the program's entry point __start back to _dl_start which then calls the program's entry point