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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug tdep/29543] [gdb/tdep, ppc] inferior call with long double
 vararg not handled correctly
Date: Sun, 04 Sep 2022 07:56:45 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29543

--- Comment #6 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Tom de Vries from comment #5)
> This fixes it for me:
> ...
> $ git diff
> diff --git a/gdb/ppc-sysv-tdep.c b/gdb/ppc-sysv-tdep.c
> index 1fe81b95f6c..8d68f90df51 100644
> --- a/gdb/ppc-sysv-tdep.c
> +++ b/gdb/ppc-sysv-tdep.c
> @@ -1444,7 +1444,7 @@ ppc64_sysv_abi_push_param (struct gdbarch *gdbarch,
>           =3D=3D floatformats_ieee_quad))
>      {
>        /* IEEE FLOAT128, args in vector registers.  */
> -      ppc64_sysv_abi_push_val (gdbarch, val, TYPE_LENGTH (type), 0, argp=
os);
> +      ppc64_sysv_abi_push_val (gdbarch, val, TYPE_LENGTH (type), 16,
> argpos);
>        ppc64_sysv_abi_push_vreg (gdbarch, val, argpos);
>      }
>    else if (type->code () =3D=3D TYPE_CODE_FLT
> ...

Hmm, we still had 16 in v2 ( PR29247 comment 16 ), but it became 0 in v3 (
PR29247 comment 18 ).

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