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OCTOBER 12, 2026
s390 — Proposed

s390: Enhance documentation of instruction operands

Update s390 assembler documentation for instruction operands.

This patch enhances the documentation for s390 instruction operands in the GAS assembler. It clarifies the types of registers that can be used and provides more detail on how operands are specified, particularly for register and storage operands. This aims to improve clarity and accuracy for developers working with s390 assembly.

In Details

This commit updates gas/doc/c-s390.texi to refine the description of instruction operands for the s390 architecture. It adds mentions of vector registers and clarifies the R field and RXB field for register identification. The documentation for storage operands also sees minor adjustments. This is a documentation-only change for the assembler.

Filed Under: documentations390gas