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| From: | Richard Henderson |
| Subject: | Re: [Qemu-devel] [PATCH 05/10] armv7m: honour CCR.STACKALIGN on exception entry |
| Date: | Tue, 24 Jan 2017 11:33:55 -0800 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.6.0 |
On 01/24/2017 11:16 AM, Peter Maydell wrote:
> The CCR.STACKALIGN bit controls whether the CPU is supposed to force
> 8-alignment of the stack pointer on entry to the exception handler.
8...
> + /* Align stack pointer if the guest wants that */
> + if ((env->regs[13] & 4) && (env->v7m.ccr & R_V7M_CCR_STKALIGN_MASK)) {
4...
> env->regs[13] -= 4;
Not alignment. "&= -4"?
r~
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