When browsing sparc64 assembler I can see most handwritten assembler routines are aligned with ".align 32". But there is also a bunch of routines that uses "ENTRY(foo) - ENDPROC(foo). They are all aligned with ".align 4,0x90" (see include/linux/linkage.h). I have tried to find something that mandates the 32 byte alignment - so far no luck. Are there any good reasosn for the use of the 32 bytes alignment? I also tried to decode 0x90 in the SPARC world - it is NOP in x86. I did not manage to decode it - but then I did not try very hard either. I would expect that .align 4,0x40 would be a better choice for sparc because 0x40 is sethi 0, %g0 aka nop. See https://en.wikipedia.org/wiki/NOP And 4 seems to be the necessary aligmnet for both sparc32 and sparc64. But I am left with an impression that I am missing something since so many routines uses 32 bytes. Sam -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
