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 other than registers (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 (13):
target/xtensa: move xtensa_finalize_config to xtensa_core_class_init
target/xtensa: don't require opcode table sorting
target/xtensa: allow multiple names for single opcode
target/xtensa: implement wide branches and loops
target/xtensa: sort FLIX instruction opcodes
target/xtensa: add generic instruction post-processing
target/xtensa: move WINDOW_BASE SR update to postprocessing
target/xtensa: only rotate window in the retw helper
target/xtensa: reorganize register handling in translators
target/xtensa: reorganize access to MAC16 registers
target/xtensa: reorganize access to boolean registers
target/xtensa: break circular register dependencies
target/xtensa: prioritize load/store in FLIX bundles
target/xtensa/cpu.h | 37 +-
target/xtensa/helper.c | 93 ++-
target/xtensa/helper.h | 5 +-
target/xtensa/overlay_tool.h | 1 -
target/xtensa/translate.c | 1595 +++++++++++++++++++++++++++---------------
target/xtensa/win_helper.c | 22 +-
6 files changed, 1162 insertions(+), 591 deletions(-)
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2.11.0