c6cda6a44a
Add a new function host_signal_set_pc to set the next pc in an mcontext. The caller should ensure this is a valid PC for execution. Acked-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20211113045603.60391-2-imp@bsdimp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
30 lines
706 B
C
30 lines
706 B
C
/*
|
|
* host-signal.h: signal info dependent on the host architecture
|
|
*
|
|
* Copyright (C) 2021 Linaro Limited
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef X86_64_HOST_SIGNAL_H
|
|
#define X86_64_HOST_SIGNAL_H
|
|
|
|
static inline uintptr_t host_signal_pc(ucontext_t *uc)
|
|
{
|
|
return uc->uc_mcontext.gregs[REG_RIP];
|
|
}
|
|
|
|
static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc)
|
|
{
|
|
uc->uc_mcontext.gregs[REG_RIP] = pc;
|
|
}
|
|
|
|
static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc)
|
|
{
|
|
return uc->uc_mcontext.gregs[REG_TRAPNO] == 0xe
|
|
&& (uc->uc_mcontext.gregs[REG_ERR] & 0x2);
|
|
}
|
|
|
|
#endif
|