We can tell that a decodetree input file is "secondary" when it
uses an argument set marked "!extern". This indicates that at
least one of the insn translation functions will have already
been declared by the "primary" input file, but given only the
secondary we cannot tell which.
Avoid redundant declaration warnings by suppressing them with pragmas.
Backports commit c692079597d98337b6f25deff7599afe39b2a468 from qemu
Typo comparing the sign of the field, twice, instead of also comparing
the mask of the field (which itself encodes both position and length).
Backports commit 2c7d442743854d2c1f5475446e088bd523f4bb20 from qemu
Assuming that the ISA clearly describes how to determine
the length of the instruction, and the ISA has a reasonable
maximum instruction length, the input to the decoder can be
right-justified in an appropriate insn word.
This is not 100% convenient, as out-of-line %fields are
numbered relative to the maximum instruction length, but
this appears to still be usable.
Backports commit 17560e9349ff1fcce814184b37993f92378cf0c4 from qemu
Previously this would result in an exception for shifting
the field mask by a negative number.
Backports commit 2decfc95583dc28add69810eaca6ada7b4b44d3a from qemu
This is interesting for bisection, where an output file is plumbed,
but does not yet have patterns.
Backports commit 82bfac1c06cadeb5c7252734dc695d951185916c from qemu
As a consequence, the 'return false' gets pushed up one level.
This will allow us to perform some other action when the
translator returns failure.
Backports commit eb6b87fac70dd62e3f1286703db20c012e7a9611 from qemu
Python 3 versions earlier than 3.4 do not have it, use the
same workaround that is in place for 3.0.
Backports commit 651514df88fd53d537b3b78a7548663cc0816b1b from qemu
While it would be possible to concatenate input files with make,
passing the original input files to decodetree.py allows us to
generate error messages which allows compilation environments
(read: emacs) to next-error to the correct input file.
Backports commit 6699ae6a8e74381583622502db8bd47fac381c9e from qemu
This allows trans_* expanders to be shared between decoders
for 32 and 16-bit insns, by not tying the expander to the
size of the insn that produced it.
This change requires adjusting the two existing users to match.
Backports commit 3a7be5546506be62d5c6c4b804119cedf9e367d6 from qemu
Allow argument sets to be shared between two decoders by avoiding
a re-declaration error. Make sure that anonymous argument sets
and anonymous formats have unique names.
Backports commit abd04f9290094f4eb7f3c07335766bbac3de22bb from qemu
Including only 4, as-yet unimplemented, instruction patterns
so that the whole thing compiles.
Backports commit 38388f7ee3adc04a7e7246c04352451c4f8d00fb from qemu
