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Tue, 1 Oct 2024 15:36:24 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DA22F20040; Tue, 1 Oct 2024 15:36:23 +0000 (GMT) Received: from li-1de7cd4c-3205-11b2-a85c-d27f97db1fe1.fritz.box (unknown [9.171.30.227]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 1 Oct 2024 15:36:23 +0000 (GMT) From: Marc Hartmayer To: , Thomas Huth Cc: qemu-s390x , Christian Borntraeger , Jens Remus Subject: [PATCH v1 1/3] pc-bios/s390-ccw: Clarify alignment is in bytes Date: Tue, 1 Oct 2024 17:36:16 +0200 Message-ID: <20241001153618.17791-2-mhartmay@linux.ibm.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241001153618.17791-1-mhartmay@linux.ibm.com> References: <20241001153618.17791-1-mhartmay@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: QBB2fVHnhiREZ4XnlC0_pAVhjrniVIJa X-Proofpoint-ORIG-GUID: puY83N4d7MqcvybWTw-RGvq7JfrycrD7 X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-01_11,2024-09-30_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 malwarescore=0 adultscore=0 spamscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 mlxlogscore=999 mlxscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2410010099 Received-SPF: pass client-ip=148.163.158.5; envelope-from=mhartmay@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: Jens Remus The assembler directive .align [1] has architecture-dependent behavior, which may be ambiguous for the reader. Some architectures perform the alignment in bytes, others in power of two. s390 does in bytes. Use the directive .balign [2] instead, to clarify that the alignment request is in bytes. No functional change. [1] https://sourceware.org/binutils/docs/as/Align.html [2] https://sourceware.org/binutils/docs/as/Balign.html Signed-off-by: Jens Remus Reviewed-by: Marc Hartmayer --- pc-bios/s390-ccw/start.S | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index 061b06591cff..576fc12c06e8 100644 --- a/pc-bios/s390-ccw/start.S +++ b/pc-bios/s390-ccw/start.S @@ -112,7 +112,7 @@ io_new_code: lctlg %c6,%c6,0(%r15) br %r14 - .align 8 + .balign 8 bss_start_literal: .quad __bss_start disabled_wait_psw: @@ -125,7 +125,7 @@ io_new_mask: .quad 0x0000000180000000 .bss - .align 8 + .balign 8 stack: .space STACK_SIZE .size stack,STACK_SIZE From patchwork Tue Oct 1 15:36:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Hartmayer X-Patchwork-Id: 13818294 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 201DBCEACDD for ; 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Tue, 1 Oct 2024 15:36:30 GMT Received: from smtprelay04.fra02v.mail.ibm.com ([9.218.2.228]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 41xwmk5578-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 01 Oct 2024 15:36:30 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay04.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 491FaOof17301956 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 1 Oct 2024 15:36:24 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 901A720043; Tue, 1 Oct 2024 15:36:24 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4829020040; Tue, 1 Oct 2024 15:36:24 +0000 (GMT) Received: from li-1de7cd4c-3205-11b2-a85c-d27f97db1fe1.fritz.box (unknown [9.171.30.227]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 1 Oct 2024 15:36:24 +0000 (GMT) From: Marc Hartmayer To: , Thomas Huth Cc: qemu-s390x , Christian Borntraeger , Jens Remus Subject: [PATCH v1 2/3] pc-bios/s390-ccw: Don't generate TEXTRELs Date: Tue, 1 Oct 2024 17:36:17 +0200 Message-ID: <20241001153618.17791-3-mhartmay@linux.ibm.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241001153618.17791-1-mhartmay@linux.ibm.com> References: <20241001153618.17791-1-mhartmay@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: MUa31YAqcDgCpHBOZQC4zfnALsUbXHhl X-Proofpoint-ORIG-GUID: GH_eRofEq1T46387UwRVnobiGvU9JdEm X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-01_11,2024-09-30_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 spamscore=0 phishscore=0 mlxlogscore=999 adultscore=0 priorityscore=1501 malwarescore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2410010099 Received-SPF: pass client-ip=148.163.158.5; envelope-from=mhartmay@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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: Jens Remus Commit 7cd50cbe4ca3 ("pc-bios/s390-ccw: Don't use __bss_start with the "larl" instruction") introduced the address constant bss_start_literal for __bss_start in the .text section, which introduced a relocation in code (i.e. TEXTREL). The dedicated constant is required, as __bss_start may not necessarily be aligned on a 2-byte boundary (see subject commit for details). Move the constant to the .data section to get rid of the relocation in the .text section. Add the linker option -z text to prevent TEXTRELs to get introduced in the future. Note that the R_390_RELATIVE relocations are taken care of by function glue() in include/hw/elf_ops.h.inc introduced by commit 5dce07e1cb67 ("elf-loader: Provide the possibility to relocate s390 ELF files"). Reported-by: Marc Hartmayer Signed-off-by: Jens Remus Reviewed-by: Marc Hartmayer --- pc-bios/s390-ccw/Makefile | 2 +- pc-bios/s390-ccw/start.S | 7 +++++-- 2 files changed, 6 insertions(+), 3 deletions(-) diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile index 6207911b53aa..ab6bd1edf41e 100644 --- a/pc-bios/s390-ccw/Makefile +++ b/pc-bios/s390-ccw/Makefile @@ -40,7 +40,7 @@ EXTRA_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -fno-common -fPIE EXTRA_CFLAGS += -fwrapv -fno-strict-aliasing -fno-asynchronous-unwind-tables EXTRA_CFLAGS += -msoft-float EXTRA_CFLAGS += -std=gnu99 -LDFLAGS += -Wl,-pie -nostdlib -z noexecstack +LDFLAGS += -Wl,-pie -nostdlib -z noexecstack -z text cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>/dev/null cc-option = if $(call cc-test, $1); then \ diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index 576fc12c06e8..b70213e41246 100644 --- a/pc-bios/s390-ccw/start.S +++ b/pc-bios/s390-ccw/start.S @@ -113,8 +113,6 @@ io_new_code: br %r14 .balign 8 -bss_start_literal: - .quad __bss_start disabled_wait_psw: .quad 0x0002000180000000,0x0000000000000000 enabled_wait_psw: @@ -124,6 +122,11 @@ external_new_mask: io_new_mask: .quad 0x0000000180000000 +.data + .balign 8 +bss_start_literal: + .quad __bss_start + .bss .balign 8 stack: From patchwork Tue Oct 1 15:36:18 2024 Content-Type: text/plain; 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Tue, 1 Oct 2024 15:36:24 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A14D520040; Tue, 1 Oct 2024 15:36:24 +0000 (GMT) Received: from li-1de7cd4c-3205-11b2-a85c-d27f97db1fe1.fritz.box (unknown [9.171.30.227]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 1 Oct 2024 15:36:24 +0000 (GMT) From: Marc Hartmayer To: , Thomas Huth Cc: qemu-s390x , Christian Borntraeger , Jens Remus Subject: [PATCH v1 3/3] pc-bios/s390-ccw: Introduce `EXTRA_LDFLAGS` Date: Tue, 1 Oct 2024 17:36:18 +0200 Message-ID: <20241001153618.17791-4-mhartmay@linux.ibm.com> X-Mailer: git-send-email 2.46.2 In-Reply-To: <20241001153618.17791-1-mhartmay@linux.ibm.com> References: <20241001153618.17791-1-mhartmay@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: GZsDp5Tv87nw38iczhg-FY5tCtpF4hRg X-Proofpoint-GUID: QgwUv-xkVO3JtDbWQ1MHRaKzp0AZBjPV X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.62.30 definitions=2024-10-01_11,2024-09-30_01,2024-09-30_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 mlxlogscore=638 impostorscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 bulkscore=0 priorityscore=1501 phishscore=0 suspectscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2410010099 Received-SPF: pass client-ip=148.163.156.1; envelope-from=mhartmay@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, 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 Some packaging tools want to override `LDFLAGS` when building QEMU, this will result in a build error as most likely no `-nostdlib` flag is passed. Introduce `EXTRA_LDFLAGS` so that the packager can override `LDFLAGS` without breaking the build. Signed-off-by: Marc Hartmayer --- Note: Normally, I would rather use ALL_LDFLAGS, but adding EXTRA_LDFLAGS matches with the current Makefile style. --- pc-bios/s390-ccw/netboot.mak | 2 +- pc-bios/s390-ccw/Makefile | 5 +++-- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/pc-bios/s390-ccw/netboot.mak b/pc-bios/s390-ccw/netboot.mak index 046aa35587ac..b1bc12603d99 100644 --- a/pc-bios/s390-ccw/netboot.mak +++ b/pc-bios/s390-ccw/netboot.mak @@ -6,7 +6,7 @@ NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include LIBNET_INC := -I$(SLOF_DIR)/lib/libnet -NETLDFLAGS := $(LDFLAGS) -Wl,-Ttext=0x7800000 +NETLDFLAGS := $(EXTRA_LDFLAGS) $(LDFLAGS) -Wl,-Ttext=0x7800000 $(NETOBJS): EXTRA_CFLAGS += $(LIBC_INC) $(LIBNET_INC) diff --git a/pc-bios/s390-ccw/Makefile b/pc-bios/s390-ccw/Makefile index ab6bd1edf41e..56c971462992 100644 --- a/pc-bios/s390-ccw/Makefile +++ b/pc-bios/s390-ccw/Makefile @@ -4,6 +4,7 @@ all: build-all include config-host.mak CFLAGS = -O2 -g +LDFLAGS ?= MAKEFLAGS += -rR GIT_SUBMODULES = roms/SLOF @@ -40,7 +41,7 @@ EXTRA_CFLAGS += -ffreestanding -fno-delete-null-pointer-checks -fno-common -fPIE EXTRA_CFLAGS += -fwrapv -fno-strict-aliasing -fno-asynchronous-unwind-tables EXTRA_CFLAGS += -msoft-float EXTRA_CFLAGS += -std=gnu99 -LDFLAGS += -Wl,-pie -nostdlib -z noexecstack -z text +EXTRA_LDFLAGS += -Wl,-pie -nostdlib -z noexecstack -z text cc-test = $(CC) -Werror $1 -c -o /dev/null -xc /dev/null >/dev/null 2>/dev/null cc-option = if $(call cc-test, $1); then \ @@ -58,7 +59,7 @@ config-cc.mak: Makefile build-all: s390-ccw.img s390-netboot.img s390-ccw.elf: $(OBJECTS) - $(call quiet-command,$(CC) $(LDFLAGS) -o $@ $(OBJECTS),Linking) + $(call quiet-command,$(CC) $(EXTRA_LDFLAGS) $(LDFLAGS) -o $@ $(OBJECTS),Linking) s390-ccw.img: s390-ccw.elf $(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,Stripping $< into)