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Greetings, I have been dealing with this issue for a while now and I believe to have narrowed down the cause to an issue with the %hi() operator. I am working with the sparc-leon3-linux target in gas versions 2.26.20160125 and 2.23. In the following assembly statements, the numbers come from macro expansions by the C preprocessor. These statements fail to assemble with the error "Error: missing ')' sethi %hi(((((0x40000000U + 0x40000000U) - 160)-(8192U-160))-32U)), %fp or %g0, %lo(((((0x40000000U +0x40000000U) - 160)-(8192U-160))-32U)), %fp However, the following assembles just fine: sethi %hi(((((0x40000000 + 0x40000000) - 160)-(8192-160))-32)), %fp or %g0, %lo(((((0x40000000 +0x40000000) - 160)-(8192-160))-32)), %fp The statements are exactly the same, except that the numbers are now treated as signed. I have further simplified this to: sethi %hi(0x40000000U + 0x40000000U), %fp # does not assemble sethi %hi(0x40000000 + 0x40000000), %fp # assembles The same error behaviour can be obtained with the 'set' pseudoinstruction. I could leave the U out of the macro definitions, but then gcc complains of overflows in the macros (which is not a show stopper, but it is ugly, as these macros get used repeatedly throughout the codebase). Have I overlooked something in the documentation/bugtracker or is this a parsing bug in gas? Thank you for your time. Cheers, Orlando.
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