Hello, this series adds limited support for FLIX instructions. FLIX (flexible length instruction extensions) allows bundling multiple opcodes in a single instruction. Each opcode is executed as if it was the only opcode in the instruction. Opcodes may not simultaneously modify same resource (register or state). Multiple branches, even non-taken, are also not allowed in one instruction. Instructions with opcodes that have circular dependencies between used resources (e.g. opcode A uses resource U and modifies resource M, while opcode B uses resource M and modifies resource U) are not supported in this series.
Max Filippov (3): target/xtensa: sort FLIX instruction opcodes target/xtensa: add generic instruction post-processing target/xtensa: move WINDOW_BASE SR update to postprocessing target/xtensa/cpu.h | 5 + target/xtensa/helper.h | 3 +- target/xtensa/translate.c | 265 +++++++++++++++++++++++++++++++++++++++++---- target/xtensa/win_helper.c | 14 +-- 4 files changed, 251 insertions(+), 36 deletions(-) -- 2.11.0
