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[111.98.113.1]) by smtp.gmail.com with ESMTPSA id v6-20020a170903238600b001d97fe26d47sm6487737plh.34.2024.02.20.09.56.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Feb 2024 09:56:38 -0800 (PST) From: Tatsuyuki Ishi To: binutils@sourceware.org Cc: i@maskray.me, nelson@rivosinc.com, rui314@gmail.com, ruiu@bluewhale.systems, Tatsuyuki Ishi Subject: [PATCH v4 7/9] RISC-V: Unify TLS handling in check_relocs. Date: Wed, 21 Feb 2024 02:55:54 +0900 Message-ID: <20240220175556.304692-8-ishitatsuyuki@gmail.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240220175556.304692-1-ishitatsuyuki@gmail.com> References: <20230817180852.121628-2-ishitatsuyuki@gmail.com> <20240220175556.304692-1-ishitatsuyuki@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-11.3 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,GIT_PATCH_0,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,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: With the introduction of transition, multiple relocation types may map to GOT_TLS_IE or GOT_TLS_LE and it makes more sense to unify the code path to perform checks common to them. bfd/ * elfnn-riscv.c (riscv_elf_check_relocs): Merge switch cases for TLS relocs. --- bfd/elfnn-riscv.c | 64 +++++++++++++++++++++++++++-------------------- 1 file changed, 37 insertions(+), 27 deletions(-) diff --git a/bfd/elfnn-riscv.c b/bfd/elfnn-riscv.c index 1594856ccef..1fbb0698ce1 100644 --- a/bfd/elfnn-riscv.c +++ b/bfd/elfnn-riscv.c @@ -662,6 +662,24 @@ riscv_elf_copy_indirect_symbol (struct bfd_link_info *info, _bfd_elf_link_hash_copy_indirect (info, dir, ind); } +static char +riscv_elf_tls_type_from_hi_reloc (unsigned int r_type) +{ + switch (r_type) + { + case R_RISCV_TLS_GD_HI20: + return GOT_TLS_GD; + case R_RISCV_TLS_GOT_HI20: + return GOT_TLS_IE; + case R_RISCV_TLSDESC_HI20: + return GOT_TLSDESC; + case R_RISCV_TPREL_HI20: + return GOT_TLS_LE; + default: + abort (); + } +} + static bool riscv_elf_record_tls_type (bfd *abfd, struct bfd_link_info *info, struct elf_link_hash_entry *h, @@ -843,19 +861,26 @@ riscv_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, switch (r_type) { - case R_RISCV_TLS_GD_HI20: - if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx) - || !riscv_elf_record_tls_type (abfd, info, h, r_symndx, - GOT_TLS_GD)) - return false; - break; + case R_RISCV_TLS_GD_HI20: + case R_RISCV_TLS_GOT_HI20: + case R_RISCV_TLSDESC_HI20: + case R_RISCV_TPREL_HI20: + { + char tls_type = riscv_elf_tls_type_from_hi_reloc (r_type); - case R_RISCV_TLS_GOT_HI20: - if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx) - || !riscv_elf_record_tls_type (abfd, info, h, r_symndx, - GOT_TLS_IE)) - return false; - break; + /* Local exec is only allowed for executables. */ + if (tls_type == GOT_TLS_LE && !bfd_link_executable (info)) + return bad_static_reloc (abfd, r_type, h); + + if (tls_type != GOT_TLS_LE + && !riscv_elf_record_got_reference (abfd, info, h, r_symndx)) + return false; + if ((tls_type != GOT_TLS_LE || h != NULL) + && !riscv_elf_record_tls_type (abfd, info, h, r_symndx, + tls_type)) + return false; + break; + } case R_RISCV_GOT_HI20: if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx) @@ -864,12 +889,6 @@ riscv_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, return false; break; - case R_RISCV_TLSDESC_HI20: - if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx) - || !riscv_elf_record_tls_type (abfd, info, h, r_symndx, - GOT_TLSDESC)) - return false; - break; case R_RISCV_CALL: case R_RISCV_CALL_PLT: @@ -953,15 +972,6 @@ riscv_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, break; goto static_reloc; - case R_RISCV_TPREL_HI20: - /* This is not allowed in the pic, but okay in pie. */ - if (!bfd_link_executable (info)) - return bad_static_reloc (abfd, r_type, h); - if (h != NULL - && !riscv_elf_record_tls_type (abfd, info, h, r_symndx, GOT_TLS_LE)) - return false; - break; - case R_RISCV_HI20: if (bfd_link_pic (info)) return bad_static_reloc (abfd, r_type, h); -- 2.43.2