Position Independent Code - 2022.1 English

Vitis Unified Software Platform Documentation: Embedded Software Development (UG1400)

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2022.1 English

The GNU compiler for MicroBlaze supports the -fPIC and -fpic switches. These switches enable position independent code (PIC) generation in the compiler. This feature is used by the Linux operating system only for MicroBlaze to implement shared libraries and relocatable executables. The scheme uses a global offset table (GOT) to relocate all data accesses in the generated code and a procedure linkage table (PLT) for making function calls into shared libraries. This is the standard convention in GNU-based platforms for generating relocatable code and for dynamically linking against shared libraries.