This is the mail archive of the gcc@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns

From: Franz Sirl <Franz dot Sirl-kernel at lauterbach dot com>
To: Lokesh Janghel <lokeshjanghel91 at gmail dot com>
Cc: segher at gcc dot gnu dot org, Umesh Kalappa <umesh dot kalappa0 at gmail dot com>, gcc at gcc dot gnu dot org
Date: Tue, 4 Dec 2018 10:57:20 +0100
Subject: Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns
References: <CACcU4_o9ip3GWvj4YwkrmP9TUnzKZGBRQe_ghn7vuXsjxyH07w@mail.gmail.com> <e03f4c19-9756-8975-d396-497b1a0b72db@lauterbach.com> <CACcU4_pDknGEavyzOk7+PZD0OUCdjUXk3AE_Kfg2Yna0RBdG-w@mail.gmail.com> <17718de5-6ffb-6ad4-612f-247ab4c8d224@lauterbach.com> <CACcU4_pLdzSJSBn7qGbtLd_b8Bzc0e6_eLrren18SjRwD65G6g@mail.gmail.com>

Am 2018-12-04 um 08:14 schrieb Lokesh Janghel:

Thank you Sirl,

-msvr4-struct-return=standard and -msvr4-struct-return=gnu (which would

be the default (-msvr4-struct-return=standard)

by default, you mean using registers to return?


Hi Lokesh,

both return small structs in registers. The question is if the returneddata is left-aligned (-msvr4-struct-return=standard, MSB-aligned) in theregister or if the data is right-aligned (-msvr4-struct-return=gnu,LSB-aligned) in the register.


Franz.

References:
- Re: Bug 84762 - GCC for PowerPC32 violates the SysV ABI spec for small struct returns
  - From: Lokesh Janghel

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]