From patchwork Tue Mar 7 09:10:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Hartmayer X-Patchwork-Id: 13163054 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC889C678DB for ; Tue, 7 Mar 2023 09:11:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230298AbjCGJL3 (ORCPT ); Tue, 7 Mar 2023 04:11:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53998 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230251AbjCGJLV (ORCPT ); Tue, 7 Mar 2023 04:11:21 -0500 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BC40052934 for ; Tue, 7 Mar 2023 01:11:13 -0800 (PST) Received: from pps.filterd (m0127361.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3277gOP5030658 for ; Tue, 7 Mar 2023 09:11:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding; s=pp1; bh=XxKPJTd2L5GIjADK1WRww3bpPjxJLjQIBvYps2w4IQo=; b=S19os1ldyxu6Gm3s9LmdFVJiezA34YRKb9p6IiCnsxpCpxQYql5rNGVkPPQVMci1pweT TlLhUr0VqS6c2/+vDXH8re8gEKS7o6AnpNVwdwP+p0ft8ULWH26ogL5M+Moce3gGb9nz wnzOYAOKWF1sqjJTxUf/GH874qPAWIsV0dM4UurFbrf0yTEC+dpRP9OUcZdzNdi+Noyw sUm5TFRy90fubjAGZ7pIeRHr4F2/ELwgtrKWBojMRMpn8xUOysfuD8AVeUAEyYBGpLSM 2BNqZ0txvwspOBrV/rAZSuKjY14vRzp0qd3+Iq3aNtlR3s+lbBBvif019OJKLwpwSg93 MA== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3p513ff2jw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT) for ; Tue, 07 Mar 2023 09:11:12 +0000 Received: from m0127361.ppops.net (m0127361.ppops.net [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3279BCKI022949 for ; Tue, 7 Mar 2023 09:11:12 GMT Received: from ppma01fra.de.ibm.com (46.49.7a9f.ip4.static.sl-reverse.com [159.122.73.70]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 3p513ff2j6-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Mar 2023 09:11:12 +0000 Received: from pps.filterd (ppma01fra.de.ibm.com [127.0.0.1]) by ppma01fra.de.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 326MkTum001841; Tue, 7 Mar 2023 09:11:10 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma01fra.de.ibm.com (PPS) with ESMTPS id 3p4192b4cq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Mar 2023 09:11:10 +0000 Received: from smtpav04.fra02v.mail.ibm.com (smtpav04.fra02v.mail.ibm.com [10.20.54.103]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 3279B60G983710 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 7 Mar 2023 09:11:07 GMT Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D4BB220043; Tue, 7 Mar 2023 09:11:06 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4C0EF20040; Tue, 7 Mar 2023 09:11:06 +0000 (GMT) Received: from li-1de7cd4c-3205-11b2-a85c-d27f97db1fe1.ibm.com.com (unknown [9.171.61.17]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 7 Mar 2023 09:11:06 +0000 (GMT) From: Marc Hartmayer To: Cc: Janosch Frank , David Hildenbrand , Claudio Imbrenda , Nina Schoetterl-Glausch , Nico Boehr , Thomas Huth Subject: [kvm-unit-tests PATCH v3 6/7] s390x: define a macro for the stack frame size Date: Tue, 7 Mar 2023 10:10:50 +0100 Message-Id: <20230307091051.13945-7-mhartmay@linux.ibm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307091051.13945-1-mhartmay@linux.ibm.com> References: <20230307091051.13945-1-mhartmay@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Mlg2uiSoigOlGhqjxGyoevKH_kas20-X X-Proofpoint-GUID: RUIslHlhCH266Su5DEcGzO5UWAuGoMuY X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-03-07_02,2023-03-06_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxscore=0 bulkscore=0 spamscore=0 adultscore=0 malwarescore=0 clxscore=1015 suspectscore=0 mlxlogscore=999 phishscore=0 priorityscore=1501 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2303070082 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Define and use a macro for the stack frame size. While at it, fix whitespace in the `gs_handler_asm` block. Signed-off-by: Marc Hartmayer Co-developed-by: Nina Schoetterl-Glausch Reviewed-by: Claudio Imbrenda Reviewed-by: Nina Schoetterl-Glausch --- lib/s390x/asm-offsets.c | 1 + s390x/Makefile | 2 +- s390x/cstart64.S | 2 +- s390x/flat.lds.S | 4 +++- s390x/gs.c | 38 +++++++++++++++++++++---------------- s390x/macros.S | 4 ++-- s390x/snippets/c/flat.lds.S | 6 ++++-- 7 files changed, 34 insertions(+), 23 deletions(-) diff --git a/lib/s390x/asm-offsets.c b/lib/s390x/asm-offsets.c index f612f3277a95..188dd2e51181 100644 --- a/lib/s390x/asm-offsets.c +++ b/lib/s390x/asm-offsets.c @@ -87,6 +87,7 @@ int main(void) OFFSET(STACK_FRAME_INT_GRS0, stack_frame_int, grs0); OFFSET(STACK_FRAME_INT_GRS1, stack_frame_int, grs1); DEFINE(STACK_FRAME_INT_SIZE, sizeof(struct stack_frame_int)); + DEFINE(STACK_FRAME_SIZE, sizeof(struct stack_frame)); return 0; } diff --git a/s390x/Makefile b/s390x/Makefile index e13a04eecb3e..fc8201f7762b 100644 --- a/s390x/Makefile +++ b/s390x/Makefile @@ -160,7 +160,7 @@ $(SNIPPET_DIR)/c/%.gbin: $(SNIPPET_DIR)/c/%.o $(snippet_lib) $(FLATLIBS) $(SNIPP $(OBJCOPY) -I binary -O elf64-s390 -B "s390:64-bit" $< $@ lds-autodepend-flags = -MMD -MF $(dir $*).$(notdir $*).d -MT $@ -%.lds: %.lds.S +%.lds: %.lds.S $(asm-offsets) $(CPP) $(lds-autodepend-flags) $(CPPFLAGS) -P -C -o $@ $< .SECONDEXPANSION: diff --git a/s390x/cstart64.S b/s390x/cstart64.S index 6f83da2a6c0a..468ace3ea4df 100644 --- a/s390x/cstart64.S +++ b/s390x/cstart64.S @@ -38,7 +38,7 @@ start: /* setup stack */ larl %r15, stackptr /* Clear first stack frame */ - xc 0(160,%r15), 0(%r15) + xc 0(STACK_FRAME_SIZE,%r15), 0(%r15) /* setup initial PSW mask + control registers*/ larl %r1, initial_psw lpswe 0(%r1) diff --git a/s390x/flat.lds.S b/s390x/flat.lds.S index 952f6cd457ed..0cb7e383cc76 100644 --- a/s390x/flat.lds.S +++ b/s390x/flat.lds.S @@ -1,3 +1,5 @@ +#include + SECTIONS { .lowcore : { @@ -44,6 +46,6 @@ SECTIONS /* * stackptr set with initial stack frame preallocated */ - stackptr = . - 160; + stackptr = . - STACK_FRAME_SIZE; stacktop = .; } diff --git a/s390x/gs.c b/s390x/gs.c index 4993eb8f43a9..9ae893eaf89a 100644 --- a/s390x/gs.c +++ b/s390x/gs.c @@ -9,6 +9,7 @@ * Janosch Frank */ #include +#include #include #include #include @@ -35,22 +36,27 @@ static inline unsigned long load_guarded(unsigned long *p) /* guarded-storage event handler and finally it calls gs_handler */ extern void gs_handler_asm(void); - asm(".globl gs_handler_asm\n" - "gs_handler_asm:\n" - " lgr %r14,%r15\n" /* Save current stack address in r14 */ - " aghi %r15,-320\n" /* Allocate stack frame */ - " stmg %r0,%r13,192(%r15)\n" /* Store regs to save area */ - " stg %r14,312(%r15)\n" - " la %r2,160(%r15)\n" /* Store gscb address in this_cb */ - " .insn rxy,0xe30000000049,0,160(%r15)\n" /* stgsc */ - " lg %r14,24(%r2)\n" /* Get GSEPLA from GSCB*/ - " lg %r14,40(%r14)\n" /* Get GSERA from GSEPL*/ - " stg %r14,304(%r15)\n" /* Store GSERA in r14 of reg save area */ - " brasl %r14,gs_handler\n" /* Jump to gs_handler */ - " lmg %r0,%r15,192(%r15)\n" /* Restore regs */ - " aghi %r14, 6\n" /* Add lgg instr len to GSERA */ - " br %r14\n" /* Jump to next instruction after lgg */ - " .size gs_handler_asm,.-gs_handler_asm\n"); + asm ( ".macro STGSC args:vararg\n" + " .insn rxy,0xe30000000049,\\args\n" + " .endm\n" + " .globl gs_handler_asm\n" + "gs_handler_asm:\n" + " lgr %r14,%r15\n" /* Save current stack address in r14 */ + ".Lgs_handler_frame = 16*8+32+" xstr(STACK_FRAME_SIZE) "\n" + " aghi %r15,-(.Lgs_handler_frame)\n" /* Allocate stack frame */ + " stmg %r0,%r13,192(%r15)\n" /* Store regs to save area */ + " stg %r14,312(%r15)\n" + " la %r2," xstr(STACK_FRAME_SIZE) "(%r15)\n" /* Store gscb address in this_cb */ + " STGSC %r0," xstr(STACK_FRAME_SIZE) "(%r15)\n" + " lg %r14,24(%r2)\n" /* Get GSEPLA from GSCB*/ + " lg %r14,40(%r14)\n" /* Get GSERA from GSEPL*/ + " stg %r14,304(%r15)\n" /* Store GSERA in r14 of reg save area */ + " brasl %r14,gs_handler\n" /* Jump to gs_handler */ + " lmg %r0,%r15,192(%r15)\n" /* Restore regs */ + " aghi %r14, 6\n" /* Add lgg instr len to GSERA */ + " br %r14\n" /* Jump to next instruction after lgg */ + ".size gs_handler_asm,.-gs_handler_asm\n" + ); void gs_handler(struct gs_cb *this_cb) { diff --git a/s390x/macros.S b/s390x/macros.S index 13cff299488f..e2a56a366c70 100644 --- a/s390x/macros.S +++ b/s390x/macros.S @@ -21,14 +21,14 @@ /* Save the stack address in GR2 which is the first function argument */ lgr %r2, %r15 /* Allocate stack space for called C function, as specified in s390 ELF ABI */ - slgfi %r15, 160 + slgfi %r15, STACK_FRAME_SIZE /* * Save the address of the interrupt stack into the back chain * of the called function. */ stg %r2, STACK_FRAME_INT_BACKCHAIN(%r15) brasl %r14, \c_func - algfi %r15, 160 + algfi %r15, STACK_FRAME_SIZE RESTORE_REGS_STACK lpswe \old_psw .endm diff --git a/s390x/snippets/c/flat.lds.S b/s390x/snippets/c/flat.lds.S index 9e5eb66bec23..468b5f1eebe8 100644 --- a/s390x/snippets/c/flat.lds.S +++ b/s390x/snippets/c/flat.lds.S @@ -1,3 +1,5 @@ +#include + SECTIONS { .lowcore : { @@ -18,9 +20,9 @@ SECTIONS . = 0x4000; /* * The stack grows down from 0x4000 to 0x2000, we pre-allocoate - * a frame via the -160. + * a frame via the -STACK_FRAME_SIZE. */ - stackptr = . - 160; + stackptr = . - STACK_FRAME_SIZE; stacktop = .; /* Start text 0x4000 */ .text : {