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Received: from VE1PR04MB6560.eurprd04.prod.outlook.com (2603:10a6:803:122::25) by AS8PR04MB9094.eurprd04.prod.outlook.com (2603:10a6:20b:445::22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5834.9; Fri, 18 Nov 2022 09:08:36 +0000 Received: from VE1PR04MB6560.eurprd04.prod.outlook.com ([fe80::4da2:ea8b:e71e:b8d8]) by VE1PR04MB6560.eurprd04.prod.outlook.com ([fe80::4da2:ea8b:e71e:b8d8%4]) with mapi id 15.20.5813.018; Fri, 18 Nov 2022 09:08:36 +0000 Message-ID: Date: Fri, 18 Nov 2022 10:08:34 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Subject: Re: aarch64-pe can't fill 16 bytes in section .text Content-Language: en-US To: zac.walker@linaro.org Cc: 'Nick Clifton' , binutils@sourceware.org, 'Alan Modra' References: <1fc98550-06e7-284e-3f1c-dda991bdd0e5@redhat.com> <584ecd9c-7876-8e2f-4610-8b51cab366b8@linaro.org> <22f1fa23-8d3d-dedf-e7fd-2f3a0ecf9928@linaro.org> <022601d8fb2b$0ae69a00$20b3ce00$@linaro.org> From: Jan Beulich In-Reply-To: <022601d8fb2b$0ae69a00$20b3ce00$@linaro.org> Content-Type: text/plain; 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(Was a holiday here yesterday) > > I am still investigating another alignment problem so might be another follow up patch. This code from OpenBLAS: > > data_ar: > .word 0x3e44fae6 > data_ai: > .word 0x3d320fa2 > start: > ldr s20, data_ar > ldr s21, data_ai > > Produces: > > zscal-min.s:2: Warning: value 0x3e44fae6 truncated to 0xfae6 > zscal-min.s:4: Warning: value 0x3d320fa2 truncated to 0xfa2 > zscal-min.s:7: Error: pc-relative load offset not word aligned > > Works ok with clang. I am not sure if .word data should be aligned by default in gas or this is just a difference in behaviour. .word is overridden by tc-aarch64.c only for ELF. So in your COFF (aiui) case .word emits just two bytes instead of the expected four. Hence also the warnings, not just the error. Jan