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 <s...@freebsd.org>
Signed-off-by: Kyle Evans <kev...@freebsd.org>
Signed-off-by: Warner Losh <i...@bsdimp.com>
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
---
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
