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Re: [Qemu-devel] [Qemu-arm] [PATCH] target-arm: Implement new HLT trap f

From: Peter Maydell
Subject: Re: [Qemu-devel] [Qemu-arm] [PATCH] target-arm: Implement new HLT trap for semihosting
Date: Fri, 6 Jan 2017 12:14:31 +0000

On 18 October 2016 at 13:16, Peter Maydell <address@hidden> wrote:
> Version 2.0 of the semihosting specification introduces new trap
> instructions for AArch32: HLT 0xF000 for A32 and HLT 0x3C for T32.
> Implement these (in the same way we implement the existing HLT
> semihosting trap for A64).
> The old traps via SVC and BKPT are unaffected.
> Signed-off-by: Peter Maydell <address@hidden>
> ---
> The public doc for the new spec is not quite done yet, but I
> wanted to get support for the new trap insns into QEMU 2.8
> (they're the only thing where a semihosting user can't probe
> to see whether the new-in-2.0 feature they want is present).

Just for the record, the public doc is now up:


-- PMM

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