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Wed, 4 Aug 2021 17:55:10 +0000 To: gcc-patches@gcc.gnu.org Subject: [PATCH 4/7] btf: expose get_btf_id Date: Wed, 4 Aug 2021 10:54:08 -0700 Message-Id: <20210804175411.6783-5-david.faust@oracle.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210804175411.6783-1-david.faust@oracle.com> References: <20210804175411.6783-1-david.faust@oracle.com> X-ClientProxiedBy: SA0PR11CA0203.namprd11.prod.outlook.com (2603:10b6:806:1bc::28) To SA2PR10MB4458.namprd10.prod.outlook.com (2603:10b6:806:f8::24) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from sequence.us.oracle.com (2606:b400:8004:44::1f) by SA0PR11CA0203.namprd11.prod.outlook.com (2603:10b6:806:1bc::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4394.17 via Frontend Transport; Wed, 4 Aug 2021 17:55:09 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3724deaa-dd48-4c43-10eb-08d957710075 X-MS-TrafficTypeDiagnostic: SA2PR10MB4555: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:7219; 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This enables the BPF CO-RE machinery in the BPF backend to lookup BTF type IDs, in order to create CO-RE relocation records. A prototype is added in ctfc.h gcc/ChangeLog: * btfout.c (get_btf_id): Function is no longer static. * ctfc.h: Expose it here. --- gcc/btfout.c | 2 +- gcc/ctfc.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/gcc/btfout.c b/gcc/btfout.c index 8cdd9905fb6..cdc6c6378c0 100644 --- a/gcc/btfout.c +++ b/gcc/btfout.c @@ -156,7 +156,7 @@ init_btf_id_map (size_t len) /* Return the BTF type ID of CTF type ID KEY, or BTF_INVALID_TYPEID if the CTF type with ID KEY does not map to a BTF type. */ -static inline ctf_id_t +ctf_id_t get_btf_id (ctf_id_t key) { return btf_id_map[key]; diff --git a/gcc/ctfc.h b/gcc/ctfc.h index 14180c1e5de..a0b7e4105a8 100644 --- a/gcc/ctfc.h +++ b/gcc/ctfc.h @@ -431,6 +431,7 @@ extern int ctf_add_variable (ctf_container_ref, const char *, ctf_id_t, dw_die_ref, unsigned int); extern ctf_id_t ctf_lookup_tree_type (ctf_container_ref, const tree); +extern ctf_id_t get_btf_id (ctf_id_t); /* CTF section does not emit location information; at this time, location information is needed for BTF CO-RE use-cases. */