Szabolcs Nagy <szabolcs.n...@arm.com> writes:
> Add the musl dynamic linker names for mips r6.
>
> It seems DRIVER_SELF_SPECS sets the default mips isa
> (MIPS_DEFAULT_ISA_LEVEL_SPEC) on *-mti-linux* or *-mti-elf, but not on
> gnu linux targets (see config/mips/mti-linux.h vs config/mips/gnu-
> user.h).
>
> Is that ok? It seems broken, but i didn't try to fix that.
The default ISA for a non-vendor configuration normally comes from a
--with-arch=<blah> configure time option which gets injected irrespective
of the MIPS_ISA_DEFAULT option. You are right that there is an
inconsistency where the driver self-specs are not aware of the default
ISA when it is specified as part of the cpu in the triple. I generally
advise people to specify the target ISA via --with-arch so hopefully most
people won't be affected. I'll look at fixing this when I do some multilib
work I have pending.
> If the toolchain is configured with mipsisa32r6-linux-musl the dynlinker
> name is wrong unless one explicitly passes
> -mips32r6 to gcc (same for the assembler and linker: they don't get -
> mips32r6 by default).
>
> gcc/
> 2016-08-24 Szabolcs Nagy <szabolcs.n...@arm.com>
>
> * config/mips/linux.h (MUSL_DYNAMIC_LINKER32): Update.
> (MUSL_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKERN32): Update.
diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
index fa253b6..2d79715 100644
--- a/gcc/config/mips/linux.h
+++ b/gcc/config/mips/linux.h
@@ -38,10 +38,13 @@ along with GCC; see the file COPYING3. If not see
"%{mnan=2008:/lib32/ld-uClibc-mipsn8.so.0;:/lib32/ld-uClibc.so.0}"
#undef MUSL_DYNAMIC_LINKER32
-#define MUSL_DYNAMIC_LINKER32
"/lib/ld-musl-mips%{EL:el}%{msoft-float:-sf}.so.1"
+#define MUSL_DYNAMIC_LINKER32 \
+ "/lib/ld-musl-mips%{mips32r6:r6}%{EL:el}%{msoft-float:-sf}.so.1
This should be %{mips32r6|mips64r6:r6} as you can target o32 from a 64-bit
architecture.
Otherwise, OK.
Thanks for the patch,
Matthew
