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[PATCH 02/30] bsd-user/signal.c: implement force_sig_fault
From: |
Warner Losh |
Subject: |
[PATCH 02/30] bsd-user/signal.c: implement force_sig_fault |
Date: |
Sun, 9 Jan 2022 09:18:55 -0700 |
Start to implement the force_sig_fault code. This currently just calls
queue_signal(). The bsd-user fork version of that will handle this the
synchronous nature of this call. Add signal-common.h to hold signal
helper functions like force_sig_fault.
Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
---
bsd-user/signal-common.h | 14 ++++++++++++++
bsd-user/signal.c | 18 ++++++++++++++++++
2 files changed, 32 insertions(+)
create mode 100644 bsd-user/signal-common.h
diff --git a/bsd-user/signal-common.h b/bsd-user/signal-common.h
new file mode 100644
index 00000000000..6207417d39e
--- /dev/null
+++ b/bsd-user/signal-common.h
@@ -0,0 +1,14 @@
+/*
+ * Emulation of BSD signals
+ *
+ * Copyright (c) 2013 Stacey Son
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef SIGNAL_COMMON_H
+#define SIGNAL_COMMON_H
+
+void force_sig_fault(int sig, int code, abi_ulong addr);
+
+#endif
diff --git a/bsd-user/signal.c b/bsd-user/signal.c
index 05b277c6422..1206d0d728c 100644
--- a/bsd-user/signal.c
+++ b/bsd-user/signal.c
@@ -19,6 +19,7 @@
#include "qemu/osdep.h"
#include "qemu.h"
+#include "signal-common.h"
/*
* Stubbed out routines until we merge signal support from bsd-user
@@ -34,6 +35,23 @@ void queue_signal(CPUArchState *env, int sig,
target_siginfo_t *info)
qemu_log_mask(LOG_UNIMP, "No signal queueing, dropping signal %d\n", sig);
}
+/*
+ * Force a synchronously taken QEMU_SI_FAULT signal. For QEMU the
+ * 'force' part is handled in process_pending_signals().
+ */
+void force_sig_fault(int sig, int code, abi_ulong addr)
+{
+ CPUState *cpu = thread_cpu;
+ CPUArchState *env = cpu->env_ptr;
+ target_siginfo_t info = {};
+
+ info.si_signo = sig;
+ info.si_errno = 0;
+ info.si_code = code;
+ info.si_addr = addr;
+ queue_signal(env, sig, &info);
+}
+
void signal_init(void)
{
}
--
2.33.1
- [PATCH 00/30] bsd-user: upstream our signal implementation, Warner Losh, 2022/01/09
- [PATCH 01/30] bsd-user/arm/target_arch_cpu.h: Move EXCP_ATOMIC to match linux-user, Warner Losh, 2022/01/09
- [PATCH 04/30] bsd-user/signal.c: implement cpu_loop_exit_sigbus, Warner Losh, 2022/01/09
- [PATCH 02/30] bsd-user/signal.c: implement force_sig_fault,
Warner Losh <=
- [PATCH 03/30] bsd-user/signal.c: Implement cpu_loop_exit_sigsegv, Warner Losh, 2022/01/09
- [PATCH 07/30] bsd-user/arm/target_arch_cpu.h: Use force_sig_fault for EXCP_UDEF, Warner Losh, 2022/01/09
- [PATCH 05/30] bsd-user/arm/arget_arch_cpu.h: Move EXCP_DEBUG and EXCP_BKPT together, Warner Losh, 2022/01/09