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bsd-user/signal.c: implement force_sig_fault

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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>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Warner Losh 2022-01-08 15:58:34 -07:00
parent c0d2691ccc
commit 0ef5998973
2 changed files with 32 additions and 0 deletions
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14
bsd-user/signal-common.h Normal file
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@ -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

18
bsd-user/signal.c
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@ -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)
{
}