From: Richard Henderson <richard.henderson@linaro.org>
To: Peter Maydell <peter.maydell@linaro.org>,
qemu-arm@nongnu.org, qemu-devel@nongnu.org
Cc: patches@linaro.org
Subject: Re: [Qemu-devel] [PATCH 07/20] target/arm: Warn about restoring to unaligned stack
Date: Thu, 5 Oct 2017 12:28:13 -0400 [thread overview]
Message-ID: <021427db-f8cb-9416-31bb-85f0bbb80e2d@linaro.org> (raw)
In-Reply-To: <1506092407-26985-8-git-send-email-peter.maydell@linaro.org>
On 09/22/2017 10:59 AM, Peter Maydell wrote:
> Attempting to do an exception return with an exception frame that
> is not 8-aligned is UNPREDICTABLE in v8M; warn about this.
> (It is not UNPREDICTABLE in v7M, and our implementation can
> handle the merely-4-aligned case fine, so we don't need to
> do anything except warn.)
>
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> target/arm/helper.c | 7 +++++++
> 1 file changed, 7 insertions(+)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
r~
next prev parent reply other threads:[~2017-10-05 16:28 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-22 14:59 [Qemu-devel] [PATCH 00/20] ARM v8M: exception entry, exit and security Peter Maydell
2017-09-22 14:59 ` [Qemu-devel] [PATCH 01/20] nvic: Clear the vector arrays and prigroup on reset Peter Maydell
2017-09-23 0:34 ` Richard Henderson
2017-09-29 21:03 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-09-22 14:59 ` [Qemu-devel] [PATCH 02/20] target/arm: Don't switch to target stack early in v7M exception return Peter Maydell
2017-10-05 4:44 ` Philippe Mathieu-Daudé
2017-10-05 16:04 ` Richard Henderson
2017-10-05 16:20 ` Peter Maydell
2017-10-06 13:22 ` Peter Maydell
2017-10-06 13:24 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 03/20] target/arm: Prepare for CONTROL.SPSEL being nonzero in Handler mode Peter Maydell
2017-10-05 3:25 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 16:09 ` [Qemu-devel] " Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 04/20] target/arm: Restore security state on exception return Peter Maydell
2017-10-05 16:14 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 05/20] target/arm: Restore SPSEL to correct CONTROL register " Peter Maydell
2017-10-05 16:18 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 06/20] target/arm: Check for xPSR mismatch usage faults earlier for v8M Peter Maydell
2017-10-05 16:25 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 07/20] target/arm: Warn about restoring to unaligned stack Peter Maydell
2017-09-29 21:05 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 16:28 ` Richard Henderson [this message]
2017-09-22 14:59 ` [Qemu-devel] [PATCH 08/20] target/arm: Don't warn about exception return with PC low bit set for v8M Peter Maydell
2017-09-29 21:07 ` Philippe Mathieu-Daudé
2017-10-05 16:32 ` Richard Henderson
2017-10-05 16:34 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 09/20] target/arm: Add new-in-v8M SFSR and SFAR Peter Maydell
2017-10-05 16:39 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 10/20] target/arm: Update excret sanity checks for v8M Peter Maydell
2017-10-05 17:16 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 11/20] target/arm: Add support for restoring v8M additional state context Peter Maydell
2017-10-05 17:30 ` Richard Henderson
2017-09-22 14:59 ` [Qemu-devel] [PATCH 12/20] target/arm: Add v8M support to exception entry code Peter Maydell
2017-10-05 18:31 ` Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 13/20] nvic: Implement Security Attribution Unit registers Peter Maydell
2017-10-05 18:33 ` Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 14/20] target/arm: Implement security attribute lookups for memory accesses Peter Maydell
2017-10-05 18:39 ` Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 15/20] target/arm: Fix calculation of secure mm_idx values Peter Maydell
2017-10-05 4:46 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 18:41 ` [Qemu-devel] " Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 16/20] target/arm: Factor out "get mmuidx for specified security state" Peter Maydell
2017-10-05 3:29 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 18:42 ` [Qemu-devel] " Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 17/20] target/arm: Implement SG instruction Peter Maydell
2017-09-22 17:18 ` [Qemu-devel] [Qemu-arm] " Peter Maydell
2017-10-05 18:50 ` [Qemu-devel] " Richard Henderson
2017-10-05 18:55 ` Peter Maydell
2017-10-05 18:57 ` Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 18/20] target/arm: Implement BLXNS Peter Maydell
2017-10-05 13:07 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 18:56 ` [Qemu-devel] " Richard Henderson
2017-10-05 19:40 ` Peter Maydell
2017-09-22 15:00 ` [Qemu-devel] [PATCH 19/20] target/arm: Implement secure function return Peter Maydell
2017-10-05 13:11 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 19:00 ` [Qemu-devel] " Richard Henderson
2017-09-22 15:00 ` [Qemu-devel] [PATCH 20/20] nvic: Add missing code for writing SHCSR.HARDFAULTPENDED bit Peter Maydell
2017-10-05 4:33 ` [Qemu-devel] [Qemu-arm] " Philippe Mathieu-Daudé
2017-10-05 19:01 ` [Qemu-devel] " Richard Henderson
2017-10-05 4:51 ` [Qemu-devel] [Qemu-arm] [PATCH 00/20] ARM v8M: exception entry, exit and security Philippe Mathieu-Daudé
2017-10-06 13:29 ` Peter Maydell
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