Bss Section

It was originally an acronym for the block storage start instruction from the ibm 704 assembly language circa 1957 and the acronym has stuck.
Bss section. In computer programming the block starting symbol abbreviated to bss or bss is the portion of an object file executable or assembly language code that contains statically allocated variables that are declared but have not been assigned a value yet. Sometimes you can find where the bss started edata. The bss section in the executable is simply a number.
Typically only the length of the bss section but no data is stored in the. The syntax for declaring bss section is section bss the text section. There is no distinction made in the runtime memory.
The bss section is used for declaring variables. On operating systems with memory protection the bss section needs to be stored in some way so the loader can arrange for writable memory at that location. The bss segment also known as uninitialized data is usually adjacent to the data segment.
This section must begin with the declaration global start which tells the kernel where the program execution begins. A simple way to remember the difference between the data and bss sections is to think of bss as an abbreviation for better save space. The bss contains all the uninitalized data.
Uninitialized data segment often called the bss segment named after an ancient assembler operator that stood for block started by symbol data in this segment is initialized by the kernel to arithmetic 0 before the program starts executing. In computer programming the name bss or bss is used by many compilers and linkers for a part of the data segment containing statically allocated variables represented solely by zero valued bits initially. It is often referred to as the bss section or bss segment.
The bss section is used for declaring variables. Would be contained in the bss segment. Uninitialized static data both variables and constants the bss section is a static memory section that contains buffers for data to be declared at runtime.