diff options
Diffstat (limited to 'bsd-user/signal-common.h')
| -rw-r--r-- | bsd-user/signal-common.h | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/bsd-user/signal-common.h b/bsd-user/signal-common.h index efed23d9ef..80e9503238 100644 --- a/bsd-user/signal-common.h +++ b/bsd-user/signal-common.h @@ -15,8 +15,32 @@ long do_sigreturn(CPUArchState *env); void force_sig_fault(int sig, int code, abi_ulong addr); int host_to_target_signal(int sig); void process_pending_signals(CPUArchState *env); -void queue_signal(CPUArchState *env, int sig, target_siginfo_t *info); +void queue_signal(CPUArchState *env, int sig, int si_type, + target_siginfo_t *info); void signal_init(void); int target_to_host_signal(int sig); +/* + * Within QEMU the top 8 bits of si_code indicate which of the parts of the + * union in target_siginfo is valid. This only applies between + * host_to_target_siginfo_noswap() and tswap_siginfo(); it does not appear + * either within host siginfo_t or in target_siginfo structures which we get + * from the guest userspace program. Linux kenrels use this internally, but BSD + * kernels don't do this, but its a useful abstraction. + * + * The linux-user version of this uses the top 16 bits, but FreeBSD's SI_USER + * and other signal indepenent SI_ codes have bit 16 set, so we only use the top + * byte instead. + * + * For FreeBSD, we have si_pid, si_uid, si_status, and si_addr always. Linux and + * {Open,Net}BSD have a different approach (where their reason field is larger, + * but whose siginfo has fewer fields always). + */ +#define QEMU_SI_NOINFO 0 /* nothing other than si_signo valid */ +#define QEMU_SI_FAULT 1 /* _fault is valid in _reason */ +#define QEMU_SI_TIMER 2 /* _timer is valid in _reason */ +#define QEMU_SI_MESGQ 3 /* _mesgq is valid in _reason */ +#define QEMU_SI_POLL 4 /* _poll is valid in _reason */ +#define QEMU_SI_CAPSICUM 5 /* _capsicum is valid in _reason */ + #endif |