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[37.24.206.209]) by smtp.gmail.com with ESMTPSA id y6-20020a6be506000000b007bf5113d0acsm4231930ioc.2.2024.01.23.01.03.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 23 Jan 2024 01:03:51 -0800 (PST) Message-ID: <708903a7-3c5d-4b2e-b280-be88aa72822b@suse.com> Date: Tue, 23 Jan 2024 10:03:48 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: RFC: Formalization of the Intel assembly syntax (PR53929) Content-Language: en-US To: LIU Hao Cc: binutils@sourceware.org, GCC Development References: <95e373fb-24f3-4b10-9ad1-948597ed9d67@suse.com> <40ae7cb2-c094-4594-859d-470e7a7fce49@126.com> <112d6607-3f35-4679-9ba8-d9257d2d20c7@suse.com> <1999d6bb-757f-41f4-ad8c-e2d54d14ee4b@suse.com> <38e2198d-ee2d-4b91-92d3-0890779bf0dd@126.com> <3d65b2cb-c717-4199-a652-58ce02c3d661@126.com> From: Jan Beulich Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <3d65b2cb-c717-4199-a652-58ce02c3d661@126.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-3025.7 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 23.01.2024 10:00, LIU Hao wrote: > 在 2024-01-23 16:38, Jan Beulich 写道: >> Right, but this is very "draft". You can't blindly assume the gas you use >> actually can deal with quotation. > > Let's assume that for the time being, but there's something else; see below. > > >>> .refptr.bx: >>> .quad bx >> >> Sure, this one needs quoting then, too. > > The attached patch contains `&& name[0] != '*'` with a reason: In the function `assemble_name_raw` > in 'gcc/varasm.cc', if `name` starts with a `*`, then its remaining part is output without > decoration. I have no idea what `*` means; this `.quad bx` thing apparently results from something like > > assemble_name_raw (file, "*bx"); > > Quoting this would break the i686 DWARF2 code, which may contain an arithmetic expression like > > .long LXXYY-1 # "LXXYY" minus one > > If it was quoted like `.long "LXXYY-1"`, it would mean something very different and cause linker errors. Hmm, that would suggest to me that the Dwarf code abuses the interface. A "name" certainly shouldn't be an expression. And hence the result of the example ought to be .long "LXXYY"-1 # "LXXYY" minus one Jan