Re: [musl] Re: New powerpc vdso calling convention

2020-04-29 Thread Michael Ellerman
Rich Felker writes: > On Sat, Apr 25, 2020 at 08:56:54PM +1000, Nicholas Piggin wrote: >> >> The ELF v2 ABI convention would suit it well, because the caller already >> >> requires the function address for ctr, so having it in r12 will >> >> eliminate the need for address calculation, which suits

Re: [musl] Re: New powerpc vdso calling convention

2020-04-25 Thread Nicholas Piggin
Excerpts from Rich Felker's message of April 26, 2020 2:22 am: > On Sat, Apr 25, 2020 at 08:56:54PM +1000, Nicholas Piggin wrote: >> >> The ELF v2 ABI convention would suit it well, because the caller already >> >> requires the function address for ctr, so having it in r12 will >> >> eliminate the

Re: [musl] Re: New powerpc vdso calling convention

2020-04-25 Thread Rich Felker
On Sat, Apr 25, 2020 at 08:56:54PM +1000, Nicholas Piggin wrote: > >> The ELF v2 ABI convention would suit it well, because the caller already > >> requires the function address for ctr, so having it in r12 will > >> eliminate the need for address calculation, which suits the vdso data > >> page ac