New features:

• The htonl(), htonll(), htons(), ntohl(), ntohll(), and ntohs() subroutines have been implemented.

• String comparison has been implemented.

• The strchr(), strrchr(), index(), rindex(), strstr(), and lltostr() subroutines have been implemented.

• Support has been added to be able to resolve symbols in compressed kernel modules.

• Speculative tracing has been implemented. Full support for the speculate(), commit(), and discard() actions is available, as is support for the speculaton() subroutine.

• It is now possible to run dtrace under valgrind.

Bugfixes:

• Symbol resolution for loadable modules was broken. This has been corrected.

Internal changes:

• Support has been added for the endianness conversion BPF instruction.

• All uses of perf_event_open() now specify the PERF_FLAG_FD_CLOEXEC flag.

Known problems:

• String sizes greater than 128 characters may pose problems with some string operations due to BPF verifier limitations.