1 /*
2  * host-signal.h: signal info dependent on the host architecture
3  *
4  * Copyright (c) 2003-2005 Fabrice Bellard
5  * Copyright (c) 2021 Linaro Limited
6  *
7  * This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
8  * See the COPYING file in the top-level directory.
9  */
10 
11 #ifndef PPC_HOST_SIGNAL_H
12 #define PPC_HOST_SIGNAL_H
13 
14 /* Needed for PT_* constants */
15 #include <asm/ptrace.h>
16 
17 /* The third argument to a SA_SIGINFO handler is ucontext_t. */
18 typedef ucontext_t host_sigcontext;
19 
20 static inline uintptr_t host_signal_pc(host_sigcontext *uc)
21 {
22     return uc->uc_mcontext.gp_regs[PT_NIP];
23 }
24 
25 static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
26 {
27     uc->uc_mcontext.gp_regs[PT_NIP] = pc;
28 }
29 
30 static inline void *host_signal_mask(host_sigcontext *uc)
31 {
32     return &uc->uc_sigmask;
33 }
34 
35 static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
36 {
37     return uc->uc_mcontext.gp_regs[PT_TRAP] != 0x400
38         && (uc->uc_mcontext.gp_regs[PT_DSISR] & 0x02000000);
39 }
40 
41 #endif
42