| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20260127153331.2902504-5-jremus@linux.ibm.com>
Date: Tue, 27 Jan 2026 16:33:30 +0100
From: Jens Remus <jremus@...ux.ibm.com>
To: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org,
linux-s390@...r.kernel.org, bpf@...r.kernel.org, x86@...nel.org,
Steven Rostedt <rostedt@...nel.org>
Cc: Jens Remus <jremus@...ux.ibm.com>, Heiko Carstens <hca@...ux.ibm.com>,
Vasily Gorbik <gor@...ux.ibm.com>,
Ilya Leoshkevich <iii@...ux.ibm.com>,
Josh Poimboeuf <jpoimboe@...nel.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...nel.org>,
Jiri Olsa <jolsa@...nel.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Andrii Nakryiko <andrii@...nel.org>,
Indu Bhagat <indu.bhagat@...cle.com>,
"Jose E. Marchesi" <jemarch@....org>,
Beau Belgrave <beaub@...ux.microsoft.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Florian Weimer <fweimer@...hat.com>, Kees Cook <kees@...nel.org>,
"Carlos O'Donell" <codonell@...hat.com>, Sam James <sam@...too.org>,
Dylan Hatch <dylanbhatch@...gle.com>
Subject: [RFC PATCH v1 4/5] s390/signal: Move struct [rt_]sigframe to asm/sigframe.h
This enables use of struct sigframe and struct rt_sigframe elsewhere,
such as unwind user.
Signed-off-by: Jens Remus <jremus@...ux.ibm.com>
---
arch/s390/include/asm/sigframe.h | 78 ++++++++++++++++++++++++++++++++
arch/s390/kernel/signal.c | 71 +----------------------------
2 files changed, 79 insertions(+), 70 deletions(-)
create mode 100644 arch/s390/include/asm/sigframe.h
diff --git a/arch/s390/include/asm/sigframe.h b/arch/s390/include/asm/sigframe.h
new file mode 100644
index 000000000000..7539fd802675
--- /dev/null
+++ b/arch/s390/include/asm/sigframe.h
@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: GPL-2.0
+#ifndef _ASM_S390_SIGFRAME_H
+#define _ASM_S390_SIGFRAME_H
+
+#include <uapi/asm/sigcontext.h>
+#include <asm/ucontext.h>
+
+/*
+ * Layout of an old-style signal-frame:
+ * -----------------------------------------
+ * | save area (_SIGNAL_FRAMESIZE) |
+ * -----------------------------------------
+ * | struct sigcontext |
+ * | oldmask |
+ * | _sigregs * |
+ * -----------------------------------------
+ * | _sigregs with |
+ * | _s390_regs_common |
+ * | _s390_fp_regs |
+ * -----------------------------------------
+ * | int signo |
+ * -----------------------------------------
+ * | _sigregs_ext with |
+ * | gprs_high 64 byte (opt) |
+ * | vxrs_low 128 byte (opt) |
+ * | vxrs_high 256 byte (opt) |
+ * | reserved 128 byte (opt) |
+ * -----------------------------------------
+ * | __u16 svc_insn |
+ * -----------------------------------------
+ * The svc_insn entry with the sigreturn system call opcode does not
+ * have a fixed position and moves if gprs_high or vxrs exist.
+ * Future extensions will be added to _sigregs_ext.
+ */
+struct sigframe
+{
+ __u8 callee_used_stack[__SIGNAL_FRAMESIZE];
+ struct sigcontext sc;
+ _sigregs sregs;
+ int signo;
+ _sigregs_ext sregs_ext;
+ __u16 svc_insn; /* Offset of svc_insn is NOT fixed! */
+};
+
+/*
+ * Layout of an rt signal-frame:
+ * -----------------------------------------
+ * | save area (_SIGNAL_FRAMESIZE) |
+ * -----------------------------------------
+ * | svc __NR_rt_sigreturn 2 byte |
+ * -----------------------------------------
+ * | struct siginfo |
+ * -----------------------------------------
+ * | struct ucontext_extended with |
+ * | unsigned long uc_flags |
+ * | struct ucontext *uc_link |
+ * | stack_t uc_stack |
+ * | _sigregs uc_mcontext with |
+ * | _s390_regs_common |
+ * | _s390_fp_regs |
+ * | sigset_t uc_sigmask |
+ * | _sigregs_ext uc_mcontext_ext |
+ * | gprs_high 64 byte (opt) |
+ * | vxrs_low 128 byte (opt) |
+ * | vxrs_high 256 byte (opt)|
+ * | reserved 128 byte (opt) |
+ * -----------------------------------------
+ * Future extensions will be added to _sigregs_ext.
+ */
+struct rt_sigframe
+{
+ __u8 callee_used_stack[__SIGNAL_FRAMESIZE];
+ __u16 svc_insn;
+ struct siginfo info;
+ struct ucontext_extended uc;
+};
+
+#endif /* _ASM_S390_SIGFRAME_H */
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 4874de5edea0..42675066399f 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -32,78 +32,9 @@
#include <asm/vdso-symbols.h>
#include <asm/access-regs.h>
#include <asm/lowcore.h>
+#include <asm/sigframe.h>
#include "entry.h"
-/*
- * Layout of an old-style signal-frame:
- * -----------------------------------------
- * | save area (_SIGNAL_FRAMESIZE) |
- * -----------------------------------------
- * | struct sigcontext |
- * | oldmask |
- * | _sigregs * |
- * -----------------------------------------
- * | _sigregs with |
- * | _s390_regs_common |
- * | _s390_fp_regs |
- * -----------------------------------------
- * | int signo |
- * -----------------------------------------
- * | _sigregs_ext with |
- * | gprs_high 64 byte (opt) |
- * | vxrs_low 128 byte (opt) |
- * | vxrs_high 256 byte (opt) |
- * | reserved 128 byte (opt) |
- * -----------------------------------------
- * | __u16 svc_insn |
- * -----------------------------------------
- * The svc_insn entry with the sigreturn system call opcode does not
- * have a fixed position and moves if gprs_high or vxrs exist.
- * Future extensions will be added to _sigregs_ext.
- */
-struct sigframe
-{
- __u8 callee_used_stack[__SIGNAL_FRAMESIZE];
- struct sigcontext sc;
- _sigregs sregs;
- int signo;
- _sigregs_ext sregs_ext;
- __u16 svc_insn; /* Offset of svc_insn is NOT fixed! */
-};
-
-/*
- * Layout of an rt signal-frame:
- * -----------------------------------------
- * | save area (_SIGNAL_FRAMESIZE) |
- * -----------------------------------------
- * | svc __NR_rt_sigreturn 2 byte |
- * -----------------------------------------
- * | struct siginfo |
- * -----------------------------------------
- * | struct ucontext_extended with |
- * | unsigned long uc_flags |
- * | struct ucontext *uc_link |
- * | stack_t uc_stack |
- * | _sigregs uc_mcontext with |
- * | _s390_regs_common |
- * | _s390_fp_regs |
- * | sigset_t uc_sigmask |
- * | _sigregs_ext uc_mcontext_ext |
- * | gprs_high 64 byte (opt) |
- * | vxrs_low 128 byte (opt) |
- * | vxrs_high 256 byte (opt)|
- * | reserved 128 byte (opt) |
- * -----------------------------------------
- * Future extensions will be added to _sigregs_ext.
- */
-struct rt_sigframe
-{
- __u8 callee_used_stack[__SIGNAL_FRAMESIZE];
- __u16 svc_insn;
- struct siginfo info;
- struct ucontext_extended uc;
-};
-
/* Store registers needed to create the signal frame */
static void store_sigregs(void)
{
--
2.51.0
Powered by blists - more mailing lists