[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH 3/4] tools/tests/x86_emulator: fix build on clang-21
- To: Jan Beulich <jbeulich@xxxxxxxx>, Edwin Török <edwin.torok@xxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Mon, 23 Feb 2026 16:06:10 +0000
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=citrix.com; dmarc=pass action=none header.from=citrix.com; dkim=pass header.d=citrix.com; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=cIxAVvVpUm+kbIMfFSG5+bVoCzxPD9fCqbPI+jiKJSA=; b=Nse4N86bLZtPt1V7E82nv0J+PVFLaku1XyEv82fcN9f+PnbeWhuQwf5pCw24TO3B7wFS2EFIM7IHYCnUGPelfZu434KvwsEZHmEqhqq1CB+zVvR9XDAMY/hQv/DiV2h769MalCfYLVrJhLQm2XGnSSz77SFLEplGd93+Burs6torN2Uhm+ECXVK/PkcNx+bksXMEgzjLPpqCUv/5BwqpaDWRqiG/5lyDU8ReoIvh+vQnqWwilp3oRfCewOgnrXwxQDz3Kf7RDPmdo7zRe8vatqk3w7r5HGvQPTs9e3lmftsMkKq3KeaAnR82UZgH9JwG2lvvQaK2yf7riOqpw7qhxw==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=dm1fK+e1NM5SVja27lfGeVWTmVwJzWmAJpn/qWmCxOs4W4uVT9wgwhlozrdvljBkjTQnuBdYs9oK4dGxFXB1zahceL9PCWkdzgnjSTpUMdSfXNp3nuxMWU2HqeY4U0PgGDMzzIq9QxFnn5hin21tN2hLSOecmv2TCpOmDdl9hVLTMD65diitcEtapOM7btvUjXJXpsxDGaGD6PvawGMhWz3kNWpF0L4pIaN3xOuaonUgHfhkWiGYGAYn60aR/Kc7ADrMbiuWYxXPhCzdnZXTGkghsvBy8RtgCWWUlhQrLbmjOtZdODRDkXJRRUXVnoW7xhQELyTUTSbAC0r+CzEnng==
- Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=citrix.com;
- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 23 Feb 2026 16:06:21 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 23/02/2026 4:02 pm, Jan Beulich wrote:
> On 23.02.2026 11:04, Edwin Török wrote:
>> clang-21's built-in assembler is enabled by default, but it doesn't
>> support some mnemonics:
>> ```
>> test_x86_emulator.c:2636:36: error: invalid instruction mnemonic 'fsaves'
>> 2636 | "fidivs %1\n\t"
>> test_x86_emulator.c:2640:24: error: invalid instruction mnemonic 'frstors'
>> 2640 | asm volatile ( "frstors %0" :: "m" (res[25]) : "memory" );
>> | ^
>> test_x86_emulator.c:4251:24: error: invalid instruction mnemonic
>> 'vpcmpestriq'
>> 4251 | put_insn(vpcmpestri,
>> | ^
>> ```
> Was this reported to them as a bug (or perhaps even two)?
Looking at just one of these, the mnemonic is FRSTOR without an S, and
Clang 21 is happy with that.
What is the trailing S supposed to signify to GAS?
~Andrew
|
