From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9109DC433FE for ; Thu, 28 Apr 2022 03:35:09 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 30FDD6B0078; Wed, 27 Apr 2022 23:35:09 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 248BD6B007B; Wed, 27 Apr 2022 23:35:09 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 111DA6B007D; Wed, 27 Apr 2022 23:35:09 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.28]) by kanga.kvack.org (Postfix) with ESMTP id 022FA6B0078 for ; Wed, 27 Apr 2022 23:35:09 -0400 (EDT) Received: from smtpin22.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id DC307294F3 for ; Thu, 28 Apr 2022 03:35:08 +0000 (UTC) X-FDA: 79404871896.22.25E364A Received: from sin.source.kernel.org (sin.source.kernel.org [145.40.73.55]) by imf13.hostedemail.com (Postfix) with ESMTP id C6E3420057 for ; Thu, 28 Apr 2022 03:35:00 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sin.source.kernel.org (Postfix) with ESMTPS id 07808CE290E; Thu, 28 Apr 2022 03:35:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14D2BC385AE; Thu, 28 Apr 2022 03:35:00 +0000 (UTC) From: Greg Ungerer To: linux-m68k@vger.kernel.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, dalias@libc.org, Greg Ungerer Subject: [PATCH 3/4] m68knommu: add definitions to support elf_fdpic program loader Date: Thu, 28 Apr 2022 13:33:18 +1000 Message-Id: <20220428033319.239341-4-gerg@linux-m68k.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220428033319.239341-1-gerg@linux-m68k.org> References: <20220428033319.239341-1-gerg@linux-m68k.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: h4whm7jrcyopxrtjdwk1nqorop1zsxgp Authentication-Results: imf13.hostedemail.com; dkim=none; spf=pass (imf13.hostedemail.com: domain of "SRS0=aK2k=VG=linux-m68k.org=gerg@kernel.org" designates 145.40.73.55 as permitted sender) smtp.mailfrom="SRS0=aK2k=VG=linux-m68k.org=gerg@kernel.org"; dmarc=none X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: C6E3420057 X-HE-Tag: 1651116900-177148 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Add a few required defines to support using the binfmt_elf_fdpic loader on the m68k architecture. The values are defined to be consistent with those used on arm and sh which support this too. The most important m68k specific change is the register initialization. The pt_reg structure only contains a subset of the architecture general registers, so we are more limited than to be expected on what can be used. Signed-off-by: Greg Ungerer --- arch/m68k/include/asm/elf.h | 9 +++++++++ arch/m68k/include/uapi/asm/ptrace.h | 5 +++++ 2 files changed, 14 insertions(+) diff --git a/arch/m68k/include/asm/elf.h b/arch/m68k/include/asm/elf.h index 3d387ceaea3f..2def06a99b08 100644 --- a/arch/m68k/include/asm/elf.h +++ b/arch/m68k/include/asm/elf.h @@ -60,6 +60,13 @@ typedef struct user_m68kfp_struct elf_fpregset_t; is actually used on ASV. */ #define ELF_PLAT_INIT(_r, load_addr) _r->a1 = 0 +#define ELF_FDPIC_PLAT_INIT(_r, _exec_map_addr, _interp_map_addr, dynamic_addr) \ + do { \ + (_r)->d3 = _exec_map_addr; \ + (_r)->d4 = _interp_map_addr; \ + (_r)->d5 = dynamic_addr; \ + } while(0) + #if defined(CONFIG_SUN3) || defined(CONFIG_COLDFIRE) #define ELF_EXEC_PAGESIZE 8192 #else @@ -114,4 +121,6 @@ typedef struct user_m68kfp_struct elf_fpregset_t; #define ELF_PLATFORM (NULL) +#define ELF_FDPIC_CORE_EFLAGS 0 + #endif diff --git a/arch/m68k/include/uapi/asm/ptrace.h b/arch/m68k/include/uapi/asm/ptrace.h index 19a1b9d0d858..5b50ea592e00 100644 --- a/arch/m68k/include/uapi/asm/ptrace.h +++ b/arch/m68k/include/uapi/asm/ptrace.h @@ -74,7 +74,12 @@ struct switch_stack { #define PTRACE_GET_THREAD_AREA 25 +#define PTRACE_GETFDPIC 31 + #define PTRACE_SINGLEBLOCK 33 /* resume execution until next branch */ +#define PTRACE_GETFDPIC_EXEC 0 +#define PTRACE_GETFDPIC_INTERP 1 + #endif /* __ASSEMBLY__ */ #endif /* _UAPI_M68K_PTRACE_H */ -- 2.25.1