Support for instruction movzw without suffix in "GNU as" was added in commit [1] and stabilized in binutils 2.27, released in August 2016. Earlier systems don't accept this instruction without a suffix, making range_decoder.h's inline assembly unable to build on old systems such as Ubuntu 16.04, creating error messages like:
lzma_decoder.c: Assembler messages:
lzma_decoder.c:371: Error: no such instruction: `movzw 2(%r11),%esi'
lzma_decoder.c:373: Error: no such instruction: `movzw 4(%r11),%edi'
lzma_decoder.c:388: Error: no such instruction: `movzw 6(%r11),%edx'
lzma_decoder.c:398: Error: no such instruction: `movzw (%r11,%r14,4),%esi'
This has been reported by at least 3 different users. Since xz and liblzma are base system tools and are often required in system upgrades themselves, compatibility with old systems shall be kept. This commit changes movzw to movzwl for compatibility.
Support for instruction
movzwwithout suffix in "GNU as" was added in commit [1] and stabilized in binutils 2.27, released in August 2016. Earlier systems don't accept this instruction without a suffix, making range_decoder.h's inline assembly unable to build on old systems such as Ubuntu 16.04, creating error messages like:This has been reported by at least 3 different users. Since xz and liblzma are base system tools and are often required in system upgrades themselves, compatibility with old systems shall be kept. This commit changes
movzwtomovzwlfor compatibility.[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=c07315e0c610e0e3317b4c02266f81793df253d2