3 quick FreeBSD for powerpc (32-bit) questions:
A) For PowerPC (32-bit) what is the stack alignment requirement by the ABI(s) that FreeBSD targets? B) Are signal handlers supposed to be given that alignment? I ask because signal handlers are at times begin given just 4-byte alignment but clang 3.8.0 powerpc's code generation can depend on the alignment being more than 4. clang 3.8.0 can calculate addresses by, for example, masking in a 0x4 relative to what would need to be an aligned address with alignment 8 or more instead of adding 0x4 to a more arbitrary address. So far I've only seen less than 8 byte stack alignment via signal handler activity. C) Which should be blamed for problems here: clang's code generation, FreeBSD's stack alignment handling for signals, or both? === Mark Millard markmi at dsl-only.net _______________________________________________ freebsd-toolchain@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-toolchain To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
