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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Jun 2024 11:49:51.6686 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 981f365b-7c26-48e4-221a-08dc83c3473b X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[63.35.35.123];Helo=[64aa7808-outbound-1.mta.getcheckrecipient.com] X-MS-Exchange-CrossTenant-AuthSource: DU2PEPF00028D13.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR08MB8351 X-Spam-Status: No, score=-13.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE,TXREP,T_SCC_BODY_TEXT_LINE,UNPARSEABLE_RELAY,UPPERCASE_50_75 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: --------------2.34.1 Content-Type: text/plain; charset="UTF-8"; format=fixed Content-Transfer-Encoding: 8bit >From armv6 onwards a lot of cores started to come with a physical VFP implementation; but many still did not and in some cases there are both variants. For the cores that lacked a physical VFP we would fall back to FPU_NONE if the platform/ABI did not mandate something else. To make matters worse, FPU_NONE is internal state used to imply soft-fpa (ie a mixed-endian double format), so any use of .double in hand-written assembly is almost certainly generating incorrect output. That's undesirable, all these cores should really default to a softvfp model. --- gas/config/tc-arm.c | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) --------------2.34.1 Content-Type: text/x-patch; name="0003-arm-default-to-softvfp-on-armv6-or-later-cores.patch" Content-Transfer-Encoding: 8bit Content-Disposition: attachment; filename="0003-arm-default-to-softvfp-on-armv6-or-later-cores.patch" diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c index 12e8f7cfc84..8452ea17a02 100644 --- a/gas/config/tc-arm.c +++ b/gas/config/tc-arm.c @@ -31458,10 +31458,10 @@ static const struct arm_cpu_option_table arm_cpus[] = FPU_ARCH_VFP_V2), ARM_CPU_OPT ("arm1136js", "ARM1136J-S", ARM_ARCH_V6, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("arm1136j-s", NULL, ARM_ARCH_V6, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("arm1136jfs", "ARM1136JF-S", ARM_ARCH_V6, ARM_ARCH_NONE, FPU_ARCH_VFP_V2), @@ -31473,22 +31473,22 @@ static const struct arm_cpu_option_table arm_cpus[] = FPU_ARCH_VFP_V2), ARM_CPU_OPT ("mpcorenovfp", "MPCore", ARM_ARCH_V6K, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("arm1156t2-s", NULL, ARM_ARCH_V6T2, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("arm1156t2f-s", NULL, ARM_ARCH_V6T2, ARM_ARCH_NONE, FPU_ARCH_VFP_V2), ARM_CPU_OPT ("arm1176jz-s", NULL, ARM_ARCH_V6KZ, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("arm1176jzf-s", NULL, ARM_ARCH_V6KZ, ARM_ARCH_NONE, FPU_ARCH_VFP_V2), ARM_CPU_OPT ("cortex-a5", "Cortex-A5", ARM_ARCH_V7A, ARM_FEATURE_CORE_LOW (ARM_EXT_MP | ARM_EXT_SEC), - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-a7", "Cortex-A7", ARM_ARCH_V7VE, ARM_ARCH_NONE, FPU_ARCH_NEON_VFP_V4), @@ -31559,13 +31559,13 @@ static const struct arm_cpu_option_table arm_cpus[] = FPU_ARCH_CRYPTO_NEON_VFP_ARMV8_DOTPROD), ARM_CPU_OPT ("cortex-r4", "Cortex-R4", ARM_ARCH_V7R, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-r4f", "Cortex-R4F", ARM_ARCH_V7R, ARM_ARCH_NONE, FPU_ARCH_VFP_V3D16), ARM_CPU_OPT ("cortex-r5", "Cortex-R5", ARM_ARCH_V7R, ARM_FEATURE_CORE_LOW (ARM_EXT_ADIV), - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-r7", "Cortex-R7", ARM_ARCH_V7R, ARM_FEATURE_CORE_LOW (ARM_EXT_ADIV), FPU_ARCH_VFP_V3D16), @@ -31580,31 +31580,31 @@ static const struct arm_cpu_option_table arm_cpus[] = FPU_ARCH_NEON_VFP_ARMV8), ARM_CPU_OPT ("cortex-m35p", "Cortex-M35P", ARM_ARCH_V8M_MAIN, ARM_FEATURE_CORE_LOW (ARM_EXT_V5ExP | ARM_EXT_V6_DSP), - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m33", "Cortex-M33", ARM_ARCH_V8M_MAIN, ARM_FEATURE_CORE_LOW (ARM_EXT_V5ExP | ARM_EXT_V6_DSP), - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m23", "Cortex-M23", ARM_ARCH_V8M_BASE, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m7", "Cortex-M7", ARM_ARCH_V7EM, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m4", "Cortex-M4", ARM_ARCH_V7EM, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m3", "Cortex-M3", ARM_ARCH_V7M, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m1", "Cortex-M1", ARM_ARCH_V6SM, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m0", "Cortex-M0", ARM_ARCH_V6SM, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-m0plus", "Cortex-M0+", ARM_ARCH_V6SM, ARM_ARCH_NONE, - FPU_NONE), + FPU_ARCH_SOFTVFP), ARM_CPU_OPT ("cortex-x1", "Cortex-X1", ARM_ARCH_V8_2A, ARM_FEATURE_CORE_HIGH (ARM_EXT2_FP16_INST | ARM_EXT2_SB), FPU_ARCH_DOTPROD_NEON_VFP_ARMV8), --------------2.34.1--