MONDAY, OCTOBER 5, 2026
s390 — Proposed
s390: Add test for .insn pseudo-mnemonic sse
Adds gas test cases and documentation for the .insn sse pseudo-mnemonic on s390.
This patch adds test cases and documentation for the .insn sse pseudo-mnemonic to the s390 GNU Assembler (gas) test suite. The changes update the ESA/390 and z/Architecture operand test files to include specific examples for this mnemonic, ensuring proper assembly and disassembly behavior.
In the Thread
- proposer
Submits patches to add test cases for the .insn sse pseudo-mnemonic in the s390 gas assembler.
“While at it add comments to ESA/390 .insn pseudo-mnemonic test.”
In Details
This patch adds test cases for the '.insn sse' pseudo-mnemonic in the s390 GNU Assembler (gas). It extends the esa-operands and zarch-operands test suites by adding definitions and expected outputs for this specific instruction format, ensuring correct assembly and disassembly.
For Context
- .insn
- A GNU Assembler directive that allows embedding raw machine instructions or pseudo-mnemonics, useful for testing or specific instruction generation.
- pseudo-mnemonic
- An assembly language construct that resembles a machine instruction but is processed by the assembler to generate one or more actual machine instructions or to represent a complex instruction format.
- SSE
- A specific instruction format in IBM s/390 architectures, often used for string operations.