From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on gnuweeb.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=5.0 tests=ALL_TRUSTED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NO_DNS_FOR_FROM,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 Received: from integral2.. (unknown [182.2.69.158]) by gnuweeb.org (Postfix) with ESMTPSA id 64C1B7E308; Tue, 22 Mar 2022 10:21:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gnuweeb.org; s=default; t=1647944500; bh=Y2yOZug2HGJL8VFMD6EqH4ZMxTYA+8NhLWRdkoEiaiI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iU1ZJPKJ6OWuXzbkmXhjXlHLVN4GyQDrbU48G2W/1KGHQV0QAHqrc1/z0dJ43rDql DfHracclBX+ZX2sAsx2bVZ+nI5wZO5CiVd/lcgfmiPB4hVFRPVg9ZxRoiXrOf5cOPF tfxJ0P4OFxBqLjee9lxqOl7Z9NMgFg3i3pw5w6ndmidjveU46MBw6M90u1KeF7Oo82 KoNNkfr9Cor7zJ1DNim0nSE4qkxmHJ7wSN9QWAdcUAjOOk2T3LYyt4I/6MmwiUK3F8 sYMykrXoqDE2mGkWynu80NPF+vZSOOHGfIuygTmQFmfMFlA1yqsTD7UQHR0hfnNGPE j6okpatS7+61A== From: Ammar Faizi To: Willy Tarreau Cc: "Paul E. McKenney" , Alviro Iskandar Setiawan , Nugraha , Linux Kernel Mailing List , GNU/Weeb Mailing List , Ammar Faizi , llvm@lists.linux.dev, Nick Desaulniers Subject: [RFC PATCH v2 2/8] tools/nolibc: Remove .global _start from the entry point code Date: Tue, 22 Mar 2022 17:21:09 +0700 Message-Id: <20220322102115.186179-3-ammarfaizi2@gnuweeb.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20220322102115.186179-1-ammarfaizi2@gnuweeb.org> References: <20220322102115.186179-1-ammarfaizi2@gnuweeb.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit List-Id: Building with clang yields the following error: ``` :3:1: error: _start changed binding to STB_GLOBAL .global _start ^ 1 error generated. ``` Make sure only specify one between `.global _start` and `.weak _start`. Removing `.global _start`. Cc: llvm@lists.linux.dev Cc: Nick Desaulniers Signed-off-by: Ammar Faizi --- @@ Changelog: Link RFC v1: https://lore.kernel.org/llvm/20220320093750.159991-3-ammarfaizi2@gnuweeb.org RFC v1 -> RFC v2: - Remove all `.global _start` for all build (GCC and Clang) instead of removing all `.weak _start` for clang build (Comment from Willy). --- tools/include/nolibc/arch-aarch64.h | 1 - tools/include/nolibc/arch-arm.h | 1 - tools/include/nolibc/arch-i386.h | 1 - tools/include/nolibc/arch-mips.h | 1 - tools/include/nolibc/arch-riscv.h | 1 - tools/include/nolibc/arch-x86_64.h | 1 - 6 files changed, 6 deletions(-) diff --git a/tools/include/nolibc/arch-aarch64.h b/tools/include/nolibc/arch-aarch64.h index 87d9e434820c..2dbd80d633cb 100644 --- a/tools/include/nolibc/arch-aarch64.h +++ b/tools/include/nolibc/arch-aarch64.h @@ -184,7 +184,6 @@ struct sys_stat_struct { /* startup code */ asm(".section .text\n" ".weak _start\n" - ".global _start\n" "_start:\n" "ldr x0, [sp]\n" // argc (x0) was in the stack "add x1, sp, 8\n" // argv (x1) = sp diff --git a/tools/include/nolibc/arch-arm.h b/tools/include/nolibc/arch-arm.h index 001a3c8c9ad5..1191395b5acd 100644 --- a/tools/include/nolibc/arch-arm.h +++ b/tools/include/nolibc/arch-arm.h @@ -177,7 +177,6 @@ struct sys_stat_struct { /* startup code */ asm(".section .text\n" ".weak _start\n" - ".global _start\n" "_start:\n" #if defined(__THUMBEB__) || defined(__THUMBEL__) /* We enter here in 32-bit mode but if some previous functions were in diff --git a/tools/include/nolibc/arch-i386.h b/tools/include/nolibc/arch-i386.h index d7e4d53325a3..125a691fc631 100644 --- a/tools/include/nolibc/arch-i386.h +++ b/tools/include/nolibc/arch-i386.h @@ -176,7 +176,6 @@ struct sys_stat_struct { */ asm(".section .text\n" ".weak _start\n" - ".global _start\n" "_start:\n" "pop %eax\n" // argc (first arg, %eax) "mov %esp, %ebx\n" // argv[] (second arg, %ebx) diff --git a/tools/include/nolibc/arch-mips.h b/tools/include/nolibc/arch-mips.h index c9a6aac87c6d..1a124790c99f 100644 --- a/tools/include/nolibc/arch-mips.h +++ b/tools/include/nolibc/arch-mips.h @@ -192,7 +192,6 @@ struct sys_stat_struct { asm(".section .text\n" ".weak __start\n" ".set nomips16\n" - ".global __start\n" ".set noreorder\n" ".option pic0\n" ".ent __start\n" diff --git a/tools/include/nolibc/arch-riscv.h b/tools/include/nolibc/arch-riscv.h index bc10b7b5706d..511d67fc534e 100644 --- a/tools/include/nolibc/arch-riscv.h +++ b/tools/include/nolibc/arch-riscv.h @@ -185,7 +185,6 @@ struct sys_stat_struct { /* startup code */ asm(".section .text\n" ".weak _start\n" - ".global _start\n" "_start:\n" ".option push\n" ".option norelax\n" diff --git a/tools/include/nolibc/arch-x86_64.h b/tools/include/nolibc/arch-x86_64.h index a7b70ea51b68..84c174181425 100644 --- a/tools/include/nolibc/arch-x86_64.h +++ b/tools/include/nolibc/arch-x86_64.h @@ -199,7 +199,6 @@ struct sys_stat_struct { */ asm(".section .text\n" ".weak _start\n" - ".global _start\n" "_start:\n" "pop %rdi\n" // argc (first arg, %rdi) "mov %rsp, %rsi\n" // argv[] (second arg, %rsi) -- Ammar Faizi