Tag · Linker scripts

Extend class9's static PIE with GOT slots, the supported mov relaxation, a TLS template, and supplied startup code that installs main-thread TLS.

Linker scripts organize input sections and define the address contract for an image. Distinguish file offsets, VMA, and LMA; explain startup mappings, data copying, and BSS clearing; then examine kernel layouts, embedded data, section retention, alignment, and script assertions.

Build the bridge from input sections to loadable segments. Compare GNU ld and LLD layouts, calculate file offsets and virtual addresses, trace section garbage collection, and test what happens when a linker script gets page permissions wrong.