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Wed, 21 Dec 2022 11:27:01 +0000 From: "Victor L. Do Nascimento" To: CC: Richard Earnshaw Subject: [PATCH v5 6/8] newlib: libc: aeabi_memmove M-profile PACBTI-enablement In-Reply-To: (Victor Do Nascimento's message of "Wed, 21 Dec 2022 11:03:41 +0000") References: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux) Date: Wed, 21 Dec 2022 11:27:01 +0000 Message-ID: MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 1 X-MS-TrafficTypeDiagnostic: VI1EUR03FT065:EE_|DB8PR08MB5404:EE_|VI1EUR03FT057:EE_|AS4PR08MB8117:EE_ X-MS-Office365-Filtering-Correlation-Id: a74c5b78-e1c0-4678-cc6a-08dae3464fa6 x-checkrecipientrouted: true NoDisclaimer: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam-Untrusted: BCL:0; X-Microsoft-Antispam-Message-Info-Original: 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 X-Forefront-Antispam-Report-Untrusted: CIP:40.67.248.234;CTRY:IE;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:nebula.arm.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230022)(4636009)(376002)(346002)(136003)(39860400002)(396003)(451199015)(36840700001)(46966006)(82310400005)(40480700001)(86362001)(36756003)(186003)(26005)(478600001)(47076005)(2616005)(2906002)(336012)(426003)(81166007)(6916009)(356005)(8676002)(316002)(4326008)(41300700001)(8936002)(83380400001)(70586007)(82740400003)(70206006)(5660300002)(36860700001)(36900700001);DIR:OUT;SFP:1101; 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X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 21 Dec 2022 11:27:14.8800 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a74c5b78-e1c0-4678-cc6a-08dae3464fa6 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: VI1EUR03FT057.eop-EUR03.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS4PR08MB8117 X-Spam-Status: No, score=-12.9 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,FORGED_SPF_HELO,GIT_PATCH_0,KAM_DMARC_NONE,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE,TXREP,UNPARSEABLE_RELAY 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: Add function prologue/epilogue to conditionally add BTI landing pads and/or PAC code generation & authentication instructions depending on compilation flags. --- newlib/libc/machine/arm/aeabi_memmove-thumb2.S | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/newlib/libc/machine/arm/aeabi_memmove-thumb2.S b/newlib/libc/machine/arm/aeabi_memmove-thumb2.S index e9504437b..20ca993e5 100644 --- a/newlib/libc/machine/arm/aeabi_memmove-thumb2.S +++ b/newlib/libc/machine/arm/aeabi_memmove-thumb2.S @@ -26,6 +26,8 @@ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ +#include "arm_asm.h" + .thumb .syntax unified .global __aeabi_memmove @@ -33,8 +35,10 @@ ASM_ALIAS __aeabi_memmove4 __aeabi_memmove ASM_ALIAS __aeabi_memmove8 __aeabi_memmove __aeabi_memmove: + .fnstart + .cfi_startproc + prologue 4 cmp r0, r1 - push {r4} bls 3f adds r3, r1, r2 cmp r0, r3 @@ -48,9 +52,10 @@ __aeabi_memmove: strb r4, [r1, #-1]! bne 1b 2: - pop {r4} - bx lr + .cfi_remember_state + epilogue 4 3: + .cfi_restore_state cmp r2, #0 beq 2b add r2, r2, r1 @@ -60,6 +65,8 @@ __aeabi_memmove: cmp r2, r1 strb r4, [r3, #1]! bne 4b - pop {r4} - bx lr + epilogue 4 + .cfi_endproc + .cantunwind + .fnend .size __aeabi_memmove, . - __aeabi_memmove -- 2.36.1