register save area
A memory region where CPU register contents are saved during context switches, interrupts, or function calls. Used in low-level programming and operating system design.
When an interrupt occurs, the processor saves the current register values in the register save area.
A stack is a general data structure for temporary storage, often used for saving return addresses and local variables, while a register save area is specifically for preserving register contents.
Compound of レジスタ (register) + 退避 (evacuation, saving) + 領域 (area, region). A direct calque from English 'register save area'.