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I know when it’s a matter of accessing memory of a stack frame it’ll be through using stack frame pointer but I wonder about how the access to data, BSS segments containing global/static data will be, through using a pointer like stack frame pointer indicating starting point of those segments or instructions address pieces of those segments directly so that each time application starts the system will have to write address parts of instructions in text segment?
Virtual memory means that these segments always appear in the same location in virtual-address space, so their addresses can be hardcoded into the executable code.
(Note, this is not true for ASLR).