From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-help-return-7538-listarch-gcc-help=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 21847 invoked by alias); 20 Dec 2001 00:10:25 -0000
Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-help/>
List-Post: <mailto:gcc-help@gcc.gnu.org>
List-Help: <mailto:gcc-help-help@gcc.gnu.org>
Sender: gcc-help-owner@gcc.gnu.org
Received: (qmail 21402 invoked from network); 20 Dec 2001 00:09:07 -0000
Received: from unknown (HELO mail.pathwayconnect.com) (209.91.95.13)
  by sources.redhat.com with SMTP; 20 Dec 2001 00:09:07 -0000
Received: (qmail 1426 invoked from network); 20 Dec 2001 00:09:02 -0000
Received: from unknown (HELO dazed) (192.168.0.149)
  by 0 with SMTP; 20 Dec 2001 00:09:02 -0000
Received: from dazed
	([127.0.0.1] helo=there ident=sjackman)
	by dazed with smtp (Exim 3.32 #1 (Debian))
	id 16GqlD-0007qA-00
	for <gcc-help@gcc.gnu.org>; Wed, 19 Dec 2001 17:08:31 -0700
Content-Type: text/plain;
  charset="iso-8859-1"
From: Shaun Jackman <sjackman@pathwayconnect.com>
Organization: Pathway Connectivity
To: gcc-help@gcc.gnu.org
Subject: attribute((interfacearm))
Date: Wed, 19 Dec 2001 16:10:00 -0000
X-Mailer: KMail [version 1.3.2]
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Message-Id: <E16GqlD-0007qA-00@dazed>
X-SW-Source: 2001-12/txt/msg00133.txt.bz2

In gcc/config/arm/README-interworking the attribute((interfacearm)) is 
mentioned as a way of supporting non-interworking arm routines that need to 
call a thumb routine.

Here's the source.
int __attribute__((interfacearm)) 
sys_write( int fd, const void* buf, unsigned count)
{
	(void)fd;
	gnputs( buf, count);
	return 0;
}

Here's the error
$ arm-elf-gcc -I. -Wall -Werror -g -DINVERTDISP -DTARGET_PATHPORT 
-DTARGET_ARM -DTARGET_PATHPORT_REV1 -mcpu=arm7tdmi -mlittle-endian 
-mthumb-interwork -mthumb  -I../include     -c -o lcd.o lcd.c
cc1: warnings being treated as errors
lcd.c:415: warning: `interfacearm' attribute directive ignored

If I use the alternate declspec(interfacearm) syntax I get
$ arm-elf-gcc -I. -Wall -Werror -g -DINVERTDISP unsigned -DTARGET_PATHPORT 
-DTARGET_ARM -DTARGET_PATHPORT_REV1 -mcpu=arm7tdmi -mlittle-endian 
-mthumb-interwork -mthumb  -I../include     -c -o lcd.o lcd.c
lcd.c:414: parse error before "sys_write"
cc1: warnings being treated as errors
lcd.c:415: warning: return type defaults to `int'

Is this attribute actually supported in gcc 3.0.2?

Thanks,
Shaun