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Re: Builtin: stack pointer
- From: Andreas Schwab <schwab at suse dot de>
- To: Renato Golin <renato dot golin at linaro dot org>
- Cc: gcc <gcc at gcc dot gnu dot org>, "Compiling the Linux Kernel with Clang\/LLVM" <llvmlinux at lists dot linuxfoundation dot org>
- Date: Thu, 27 Mar 2014 11:29:23 +0100
- Subject: Re: Builtin: stack pointer
- Authentication-results: sourceware.org; auth=none
- References: <CAMSE1kc3FJOq+mh=AD-FQhrGW+aVpVkWFdhfHCM+c=ZgN6Kpug at mail dot gmail dot com> <mvm61n0j6h6 dot fsf at hawking dot suse dot de> <CAMSE1kdyg5VaVTiNJ0t=+5Epstb=vPf48f_YBzM5KrQtan8MYQ at mail dot gmail dot com>
Renato Golin <renato.golin@linaro.org> writes:
> On 27 March 2014 10:12, Andreas Schwab <schwab@suse.de> wrote:
>> Can't you use __builtin_frame_address (0) instead?
>
> That would give me the frame pointer, not the stack pointer, and the
> user would have to calculate manually the offset to get the actual
> stack pointer, which would be target-specific, possibly making it even
> worse. Is that what you meant?
Depends on what you need the value for.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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