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Date: Tue, 11 Jun 2013 00:13:00 -0000
Message-ID: <CAKOQZ8z+0+c3P3Pt_4gihVHOM2hLMtpKHBnVsVnj30ucvwkuLw@mail.gmail.com>
Subject: Re: Thumb inline assembly
From: Ian Lance Taylor <iant@google.com>
To: Kalai Rajah N <kalairajah@gmail.com>
Cc: "gcc-help@gcc.gnu.org" <gcc-help@gcc.gnu.org>
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On Mon, Jun 10, 2013 at 5:06 PM, Kalai Rajah N <kalairajah@gmail.com> wrote:
> Do you mean push is not supported or the specific parameters used by
> push in this code?
>
> But, from ARM's page, it seems the instruction is fine ...
>
> http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dui0283b/Babefbce.html

That page says that in Thumb mode the push instruction only supports
the lo registers.

Ian

> On Mon, Jun 10, 2013 at 4:51 PM, Ian Lance Taylor <iant@google.com> wrote:
>> On Mon, Jun 10, 2013 at 4:19 PM, Kalai Rajah N <kalairajah@gmail.com> wrote:
>>>
>>> .thumb_func
>>
>> This is a Thumb function.
>>
>>> push {r4, r5, r6, r7, r8}
>>
>> As far as I know this is not a Thumb instruction.
>>
>> I don't know how this gets through the assembler.
>>
>> Ian