c93cbac1f4
target_sigemptyset: resets a set to having no bits set target_sigaddset: adds a signal to a set target_sigismember: returns true when signal is a member host_to_target_sigset_internal: convert host sigset to target host_to_target_sigset: convert host sigset to target target_to_host_sigset_internal: convert target sigset to host target_to_host_sigset: convert target sigset to host 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: Richard Henderson <richard.henderson@linaro.org>
49 lines
2.0 KiB
C
49 lines
2.0 KiB
C
/*
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* Emulation of BSD signals
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*
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* Copyright (c) 2013 Stacey Son
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef SIGNAL_COMMON_H
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#define SIGNAL_COMMON_H
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long do_rt_sigreturn(CPUArchState *env);
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abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
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long do_sigreturn(CPUArchState *env);
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void force_sig_fault(int sig, int code, abi_ulong addr);
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int host_to_target_signal(int sig);
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void host_to_target_sigset(target_sigset_t *d, const sigset_t *s);
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void process_pending_signals(CPUArchState *env);
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void queue_signal(CPUArchState *env, int sig, int si_type,
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target_siginfo_t *info);
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void signal_init(void);
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int target_to_host_signal(int sig);
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void target_to_host_sigset(sigset_t *d, const target_sigset_t *s);
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/*
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* Within QEMU the top 8 bits of si_code indicate which of the parts of the
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* union in target_siginfo is valid. This only applies between
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* host_to_target_siginfo_noswap() and tswap_siginfo(); it does not appear
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* either within host siginfo_t or in target_siginfo structures which we get
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* from the guest userspace program. Linux kenrels use this internally, but BSD
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* kernels don't do this, but its a useful abstraction.
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*
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* The linux-user version of this uses the top 16 bits, but FreeBSD's SI_USER
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* and other signal indepenent SI_ codes have bit 16 set, so we only use the top
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* byte instead.
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*
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* For FreeBSD, we have si_pid, si_uid, si_status, and si_addr always. Linux and
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* {Open,Net}BSD have a different approach (where their reason field is larger,
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* but whose siginfo has fewer fields always).
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*/
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#define QEMU_SI_NOINFO 0 /* nothing other than si_signo valid */
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#define QEMU_SI_FAULT 1 /* _fault is valid in _reason */
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#define QEMU_SI_TIMER 2 /* _timer is valid in _reason */
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#define QEMU_SI_MESGQ 3 /* _mesgq is valid in _reason */
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#define QEMU_SI_POLL 4 /* _poll is valid in _reason */
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#define QEMU_SI_CAPSICUM 5 /* _capsicum is valid in _reason */
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#endif
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