On Thu, 18 Apr 2019, Mathieu Desnoyers wrote: > The approach above should work for arm32 be8 vs be32 linker weirdness. > > For aarch64, I think we can simply do: > > /* > * aarch64 -mbig-endian generates mixed endianness code vs data: > * little-endian code and big-endian data. Ensure the RSEQ_SIG signature > * matches code endianness. > */ > #define RSEQ_SIG_CODE 0xd428bc00 /* BRK #0x45E0. */ > > #ifdef __ARM_BIG_ENDIAN > #define RSEQ_SIG_DATA 0x00bc28d4 /* BRK #0x45E0. */ > #else > #define RSEQ_SIG_DATA RSEQ_SIG_CODE > #endif > > #define RSEQ_SIG RSEQ_SIG_DATA > > Feedback is most welcome, You'll also need __ASSEMBLER__ conditionals in the installed sys/rseq.h header so that it only defines constants and doesn't include any C declarations in that case, if RSEQ_SIG_CODE is meant to be usable in .S files rather than just inline asm in C files. -- Joseph S. Myers joseph@xxxxxxxxxxxxxxxx
