From patchwork Tue Nov 19 06:04:06 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13879422 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E8A1CD591A6 for ; Tue, 19 Nov 2024 06:06:04 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tDHM1-00019J-8u; Tue, 19 Nov 2024 01:04:49 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tDHLx-00016i-Ke; Tue, 19 Nov 2024 01:04:45 -0500 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tDHLv-0004fO-HR; Tue, 19 Nov 2024 01:04:45 -0500 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id 063B5A6268; Tue, 19 Nov 2024 09:04:15 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 2D4391738DD; Tue, 19 Nov 2024 09:04:19 +0300 (MSK) Received: (nullmailer pid 2368948 invoked by uid 1000); Tue, 19 Nov 2024 06:04:18 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: qemu-stable@nongnu.org, Richard Henderson , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Michael Tokarev Subject: [Stable-9.1.2 65/72] linux-user/arm: Select vdso for be8 and be32 modes Date: Tue, 19 Nov 2024 09:04:06 +0300 Message-Id: <20241119060418.2368866-8-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.5 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Richard Henderson In be8 mode, instructions are little-endian. In be32 mode, instructions are big-endian. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2333 Reviewed-by: Philippe Mathieu-Daudé Signed-off-by: Richard Henderson (cherry picked from commit 95c9e2209cc09453cfd49e91321df254ccbf466f) Signed-off-by: Michael Tokarev diff --git a/linux-user/arm/Makefile.vdso b/linux-user/arm/Makefile.vdso index 8a24b0e534..ede489e236 100644 --- a/linux-user/arm/Makefile.vdso +++ b/linux-user/arm/Makefile.vdso @@ -3,15 +3,18 @@ include $(BUILD_DIR)/tests/tcg/arm-linux-user/config-target.mak SUBDIR = $(SRC_PATH)/linux-user/arm VPATH += $(SUBDIR) -all: $(SUBDIR)/vdso-be.so $(SUBDIR)/vdso-le.so +all: $(SUBDIR)/vdso-be8.so $(SUBDIR)/vdso-be32.so $(SUBDIR)/vdso-le.so # Adding -use-blx disables unneeded interworking without actually using blx. LDFLAGS = -nostdlib -shared -Wl,-use-blx -Wl,-z,max-page-size=4096 \ -Wl,-h,linux-vdso.so.1 -Wl,--build-id=sha1 \ -Wl,--hash-style=both -Wl,-T,$(SUBDIR)/vdso.ld -$(SUBDIR)/vdso-be.so: vdso.S vdso.ld vdso-asmoffset.h - $(CC) -o $@ $(LDFLAGS) -mbig-endian $< +$(SUBDIR)/vdso-be8.so: vdso.S vdso.ld vdso-asmoffset.h + $(CC) -o $@ $(LDFLAGS) -mbig-endian -mbe8 $< + +$(SUBDIR)/vdso-be32.so: vdso.S vdso.ld vdso-asmoffset.h + $(CC) -o $@ $(LDFLAGS) -mbig-endian -mbe32 $< $(SUBDIR)/vdso-le.so: vdso.S vdso.ld vdso-asmoffset.h $(CC) -o $@ $(LDFLAGS) -mlittle-endian $< diff --git a/linux-user/arm/meson.build b/linux-user/arm/meson.build index c4bb9af5b8..348ffb810d 100644 --- a/linux-user/arm/meson.build +++ b/linux-user/arm/meson.build @@ -10,10 +10,17 @@ syscall_nr_generators += { # is always true as far as source_set.apply() is concerned. Always build # both header files and include the right one via #if. -vdso_be_inc = gen_vdso.process('vdso-be.so', - extra_args: ['-s', 'sigreturn_codes']) +vdso_be8_inc = gen_vdso.process('vdso-be8.so', + extra_args: ['-s', 'sigreturn_codes', + '-p', 'vdso_be8']) + +vdso_be32_inc = gen_vdso.process('vdso-be32.so', + extra_args: ['-s', 'sigreturn_codes', + '-p', 'vdso_be32']) vdso_le_inc = gen_vdso.process('vdso-le.so', extra_args: ['-s', 'sigreturn_codes']) -linux_user_ss.add(when: 'TARGET_ARM', if_true: [vdso_be_inc, vdso_le_inc]) +linux_user_ss.add(when: 'TARGET_ARM', if_true: [ + vdso_be8_inc, vdso_be32_inc, vdso_le_inc +]) diff --git a/linux-user/arm/vdso-be32.so b/linux-user/arm/vdso-be32.so new file mode 100755 index 0000000000..b896d3d545 Binary files /dev/null and b/linux-user/arm/vdso-be32.so differ diff --git a/linux-user/arm/vdso-be.so b/linux-user/arm/vdso-be8.so similarity index 95% rename from linux-user/arm/vdso-be.so rename to linux-user/arm/vdso-be8.so index bed02804a4..784b7bdb2a 100755 Binary files a/linux-user/arm/vdso-be.so and b/linux-user/arm/vdso-be8.so differ diff --git a/linux-user/elfload.c b/linux-user/elfload.c index 3b8db721e2..1deaf904e9 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -659,6 +659,23 @@ static const char *get_elf_platform(void) #undef END } +#if TARGET_BIG_ENDIAN +#include "elf.h" +#include "vdso-be8.c.inc" +#include "vdso-be32.c.inc" + +static const VdsoImageInfo *vdso_image_info(uint32_t elf_flags) +{ + return (EF_ARM_EABI_VERSION(elf_flags) >= EF_ARM_EABI_VER4 + && (elf_flags & EF_ARM_BE8) + ? &vdso_be8_image_info + : &vdso_be32_image_info); +} +#define vdso_image_info vdso_image_info +#else +# define VDSO_HEADER "vdso-le.c.inc" +#endif + #else /* 64 bit ARM definitions */ @@ -958,14 +975,14 @@ const char *elf_hwcap2_str(uint32_t bit) #undef GET_FEATURE_ID -#endif /* not TARGET_AARCH64 */ - #if TARGET_BIG_ENDIAN # define VDSO_HEADER "vdso-be.c.inc" #else # define VDSO_HEADER "vdso-le.c.inc" #endif +#endif /* not TARGET_AARCH64 */ + #endif /* TARGET_ARM */ #ifdef TARGET_SPARC @@ -3519,12 +3536,14 @@ static void load_elf_interp(const char *filename, struct image_info *info, load_elf_image(filename, &src, info, &ehdr, NULL); } +#ifndef vdso_image_info #ifdef VDSO_HEADER #include VDSO_HEADER -#define vdso_image_info() &vdso_image_info +#define vdso_image_info(flags) &vdso_image_info #else -#define vdso_image_info() NULL -#endif +#define vdso_image_info(flags) NULL +#endif /* VDSO_HEADER */ +#endif /* vdso_image_info */ static void load_elf_vdso(struct image_info *info, const VdsoImageInfo *vdso) { @@ -3855,7 +3874,7 @@ int load_elf_binary(struct linux_binprm *bprm, struct image_info *info) * Load a vdso if available, which will amongst other things contain the * signal trampolines. Otherwise, allocate a separate page for them. */ - const VdsoImageInfo *vdso = vdso_image_info(); + const VdsoImageInfo *vdso = vdso_image_info(info->elf_flags); if (vdso) { load_elf_vdso(&vdso_info, vdso); info->vdso = vdso_info.load_bias;