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Message-ID: <20160404104108.GY9862@port70.net> Date: Mon, 4 Apr 2016 12:41:08 +0200 From: Szabolcs Nagy <nsz@...t70.net> To: musl@...ts.openwall.com Subject: Re: [PATCH 2/2] add powerpc64 port * Bobby Bingham <koorogi@...rogi.info> [2016-04-03 23:03:54 -0500]: > On Sun, Mar 27, 2016 at 10:18:56PM -0400, Rich Felker wrote: > > > > > diff --git a/arch/powerpc64/reloc.h b/arch/powerpc64/reloc.h > > > > > new file mode 100644 > > > > > index 0000000..8e60b31 > > > > > --- /dev/null > > > > > +++ b/arch/powerpc64/reloc.h > > > > > @@ -0,0 +1,32 @@ > > > > > +#include <endian.h> > > > > > + > > > > > +#if __BYTE_ORDER == __LITTLE_ENDIAN > > > > > +#define ENDIAN_SUFFIX "le" > > > > > +#else > > > > > +#define ENDIAN_SUFFIX "" > > > > > +#endif > > > > > + > > > > > +#define LDSO_ARCH "powerpc64" ENDIAN_SUFFIX > > > > > > > > Is it intentional that the "default" subarch variant be suffixed with > > > > "le" and a non-default/unused one be the bare "powerpc64"? I don't > > > > object to that but it's contrary to usual conventions that the bare > > > > arch be the canonical ABI, and it might be contrary to what GCC is > > > > doing now (haven't checked) for the dynamic linker name. > > > > > > I'll double check, but I skimmed the gcc code here, and it looked like > > > it uses an "le" suffix. Admittedly, I didn't read it closely enough to > > > be absolutely sure yet. > > > > OK, sounds good. Also note that CRTJMP here needs fixing. > > I checked again, and gcc does indeed use the "le" suffix. > > gcc/config/rs6000/linux64.h has: > > #define MUSL_DYNAMIC_LINKER64 \ > "/lib/ld-musl-powerpc64" MUSL_DYNAMIC_LINKER_E "%{msoft-float:-sf}.so.1" > > > The two places that define MUSL_DYNAMIC_LINKER_E define it like so: > > gcc/config/rs6000/sysv4.h: > > #define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("", "le", "") > > gcc/config/rs6000/sysv4le.h: > > #define MUSL_DYNAMIC_LINKER_E ENDIAN_SELECT("", "le", "le") > i think i just followed the 32bit logic because 32bit and 64bit use a lot of common code in gcc i dont know what's the convention. i hope this works.
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