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From: Jon Masters <jonathan@jonmasters.org>
To: loody <miloody@gmail.com>, Catalin Marinas <catalin.marinas@arm.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: some question about aarch32 for ARM64
Date: Mon, 16 Mar 2015 06:01:42 -0400	[thread overview]
Message-ID: <5506AA06.5070204@jonmasters.org> (raw)
In-Reply-To: <CANudz+ujtoK6vD+O2z6fTHGK5aLeWdX4u1fD8-i59y8ZP0wBZA@mail.gmail.com>

On 2/24/15, 12:19 AM, loody wrote:

>>> PS:Below is my compile error message:
>>> #aarch64-linux-gnu-gcc -mabi=ilp32 test.c
>>
>> -mabi=ilp32 is entirely different from an AArch32 compiler. The above
>> still generates AArch64 but with the ILP32 ABI (sizeof int/long/pointer
>> is 32-bit).
> so per your explanation, AArch32 binary could be created by any
> arm-linux-gnu-gcc which support armv7 and previous instructions.
> And -mabi=ilp32 is still aarch64 but with ILP32 ABI.
> appreciate your kind help ^^

This is the correct summary.

Jon.


      reply	other threads:[~2015-03-16 10:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-23 12:28 some question about aarch32 for ARM64 loody
2015-02-23 13:27 ` Catalin Marinas
2015-02-24  5:19   ` loody
2015-03-16 10:01     ` Jon Masters [this message]

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