From nobody Fri Oct 08 01:16:49 2021 X-Original-To: dev-commits-src-branches@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 5929F12D1AAA; Fri, 8 Oct 2021 01:16:57 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4HQVdz5HHgz3tv0; Fri, 8 Oct 2021 01:16:55 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id EF7241D951; Fri, 8 Oct 2021 01:16:49 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1981Gnl2011054; Fri, 8 Oct 2021 01:16:49 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1981Gnqb011053; Fri, 8 Oct 2021 01:16:49 GMT (envelope-from git) Date: Fri, 8 Oct 2021 01:16:49 GMT Message-Id: <202110080116.1981Gnqb011053@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Kyle Evans Subject: git: 72f29c6a1e45 - stable/12 - Reuse the amd64 loader relocation code on arm64 List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-branches@freebsd.org X-BeenThere: dev-commits-src-branches@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kevans X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 72f29c6a1e45d7dab25a8a32c483265e3fb41c15 Auto-Submitted: auto-generated X-ThisMailContainsUnwantedMimeParts: N The branch stable/12 has been updated by kevans: URL: https://cgit.FreeBSD.org/src/commit/?id=72f29c6a1e45d7dab25a8a32c483265e3fb41c15 commit 72f29c6a1e45d7dab25a8a32c483265e3fb41c15 Author: Andrew Turner AuthorDate: 2021-01-17 18:11:11 +0000 Commit: Kyle Evans CommitDate: 2021-10-08 01:16:00 +0000 Reuse the amd64 loader relocation code on arm64 There is no need to keep multiple copies of the relocation code. The amd64 code works on arm64 with a few small changes to relocation types. (cherry picked from commit f6f0b849fb2683feebf2416a793964be0bd05cc5) --- stand/common/reloc_elf.c | 35 ++++++++++++++++++++++------------- 1 file changed, 22 insertions(+), 13 deletions(-) diff --git a/stand/common/reloc_elf.c b/stand/common/reloc_elf.c index b45c3295966e..c7dd11eac904 100644 --- a/stand/common/reloc_elf.c +++ b/stand/common/reloc_elf.c @@ -77,7 +77,8 @@ __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr, const void *reldata, } return (0); -#elif (defined(__i386__) || defined(__amd64__)) && __ELF_WORD_SIZE == 64 +#elif (defined(__aarch64__) || defined(__amd64__) || defined(__i386__)) && \ + __ELF_WORD_SIZE == 64 Elf64_Addr *where, val; Elf_Addr addend, addr; Elf_Size rtype, symidx; @@ -112,12 +113,29 @@ __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr, const void *reldata, if (reltype == ELF_RELOC_REL) addend = *where; +#if defined(__aarch64__) +#define RELOC_RELATIVE R_AARCH64_RELATIVE +#define RELOC_IRELATIVE R_AARCH64_IRELATIVE +#elif defined(__amd64__) || defined(__i386__) /* XXX, definitions not available on i386. */ #define R_X86_64_64 1 #define R_X86_64_RELATIVE 8 #define R_X86_64_IRELATIVE 37 +#define RELOC_RELATIVE R_X86_64_RELATIVE +#define RELOC_IRELATIVE R_X86_64_IRELATIVE +#endif + switch (rtype) { + case RELOC_RELATIVE: + addr = (Elf_Addr)addend + relbase; + val = addr; + memcpy(where, &val, sizeof(val)); + break; + case RELOC_IRELATIVE: + /* leave it to kernel */ + break; +#if defined(__amd64__) || defined(__i386__) case R_X86_64_64: /* S + A */ addr = symaddr(ef, symidx); if (addr == 0) @@ -125,14 +143,7 @@ __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr, const void *reldata, val = addr + addend; *where = val; break; - case R_X86_64_RELATIVE: - addr = (Elf_Addr)addend + relbase; - val = addr; - *where = val; - break; - case R_X86_64_IRELATIVE: - /* leave it to kernel */ - break; +#endif default: printf("\nunhandled relocation type %u\n", (u_int)rtype); return (EFTYPE); @@ -200,7 +211,7 @@ __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr, const void *reldata, } return (0); -#elif defined(__aarch64__) || defined(__powerpc__) || defined(__riscv) +#elif defined(__powerpc__) || defined(__riscv) Elf_Size w; const Elf_Rela *rela; @@ -210,9 +221,7 @@ __elfN(reloc)(struct elf_file *ef, symaddr_fn *symaddr, const void *reldata, if (relbase + rela->r_offset >= dataaddr && relbase + rela->r_offset < dataaddr + len) { switch (ELF_R_TYPE(rela->r_info)) { -#if defined(__aarch64__) - case R_AARCH64_RELATIVE: -#elif defined(__powerpc__) +#if defined(__powerpc__) case R_PPC_RELATIVE: #elif defined(__riscv) case R_RISCV_RELATIVE: