IAR Embedded Workbench for Arm 9.70.xIAR C/C++ DevelopmentSection referenceDescriptions of sections and blocks.tdata.tdataIn this section: DescriptionHolds thread-local initialized static and global variables for the primary thread. If the linker option ‑‑threaded_lib is not used, these are treated as .data.See alsoManaging a multithreaded environment.