Re: The tale of -mrtd in GCC and Clang

To: debian-68k@lists.debian.org, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>, debian-68k <debian-68k@lists.debian.org>
Cc: linux-m68k <linux-m68k@lists.linux-m68k.org>
Subject: Re: The tale of -mrtd in GCC and Clang
From: Richard Z <rz@linux-m68k.org>
Date: Wed, 10 May 2023 14:39:50 +0000
Message-id: <[🔎] 8D41D99B-B817-4478-9D7C-3434E50DC355@linux-m68k.org>
In-reply-to: <[🔎] 5a46ed40ce55b04b7a53591b10cfcc925b468501.camel@physik.fu-berlin.de>
References: <[🔎] 5a46ed40ce55b04b7a53591b10cfcc925b468501.camel@physik.fu-berlin.de>

Hi,

very interesting. Somewhere deep in my memory I have the idea that the mrtd option or rtd instruction was designed for Modula 2 which was modern at that time. It was probably pretty useless for a classical K&R c compiler that didn't even understand prototypes until 1989 or so... I assume GCC -mrtd predated c prototypes.

Richard

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References:
- The tale of -mrtd in GCC and Clang
  - From: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>

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