Michael Ellerman <m...@ellerman.id.au> writes: > On Wed, Nov 20, 2013 at 10:15:00PM +1100, Anton Blanchard wrote: >> From: Rusty Russell <ru...@rustcorp.com.au> >> >> Little endian ppc64 is getting an exciting new ABI. This is reflected >> by the bottom two bits of e_flags in the ELF header: >> >> 0 == legacy binaries (v1 ABI) >> 1 == binaries using the old ABI (compiled with a new toolchain) >> 2 == binaries using the new ABI. > > Just to be ridiculously clear for stupid people like me, you refer here > to the "v1 ABI" and "the old ABI" - they are the same thing - right?
Sorry for delay, was off for a week. Yes, same thing. >> diff --git a/arch/powerpc/include/asm/thread_info.h >> b/arch/powerpc/include/asm/thread_info.h >> index ba7b197..05a3030 100644 >> --- a/arch/powerpc/include/asm/thread_info.h >> +++ b/arch/powerpc/include/asm/thread_info.h >> @@ -107,6 +107,9 @@ static inline struct thread_info >> *current_thread_info(void) >> #define TIF_EMULATE_STACK_STORE 16 /* Is an instruction emulation >> for stack store? */ >> #define TIF_MEMDIE 17 /* is terminating due to OOM killer */ >> +#if defined(CONFIG_PPC64) >> +#define TIF_ELF2ABI 18 /* function descriptors must die! */ >> +#endif > > This is the first TIF flag we #ifdef for 32 vs 64, is that just because > we don't want to waste a flag on 32 bit? No, it's because I wanted to make damn sure that there wasn't anyone testing this in 32-bit code, since ELF2 is currently a 64-bit only option. Cheers, Rusty. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
