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bsd-user/signal.c: implement abstract target / host signal translation

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Implement host_to_target_signal and target_to_host_signal.

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 16:48:03 -07:00
parent 67ccbe798f
commit 1366ef817a
2 changed files with 18 additions and 0 deletions
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2
bsd-user/signal-common.h
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@ -13,8 +13,10 @@ long do_rt_sigreturn(CPUArchState *env);
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr, abi_ulong sp);
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 signal_init(void);
int target_to_host_signal(int sig);
#endif

16
bsd-user/signal.c
View File

@ -2,6 +2,7 @@
* Emulation of BSD signals
*
* Copyright (c) 2003 - 2008 Fabrice Bellard
* Copyright (c) 2013 Stacey Son
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@ -27,6 +28,21 @@
* fork.
*/
/*
* The BSD ABIs use the same singal numbers across all the CPU architectures, so
* (unlike Linux) these functions are just the identity mapping. This might not
* be true for XyzBSD running on AbcBSD, which doesn't currently work.
*/
int host_to_target_signal(int sig)
{
return sig;
}
int target_to_host_signal(int sig)
{
return sig;
}
/*
* Queue a signal so that it will be send to the virtual CPU as soon as
* possible.