/*
 * Generic sigframe bits.
 */

#ifndef __CR_SIGFRAME_H__
#define __CR_SIGFRAME_H__

#include "asm/types.h"
#include "protobuf/core.pb-c.h"

struct rt_sigframe;

/* sigframe should be aligned on 64 byte for x86 and 8 bytes for arm */
#define RESTORE_STACK_SIGFRAME ALIGN(sizeof(struct rt_sigframe) + SIGFRAME_OFFSET, 64)

#ifndef __ARCH_SI_PREAMBLE_SIZE
#define __ARCH_SI_PREAMBLE_SIZE	(3 * sizeof(int))
#endif

#define SI_MAX_SIZE	128
#ifndef SI_PAD_SIZE
#define SI_PAD_SIZE	((SI_MAX_SIZE - __ARCH_SI_PREAMBLE_SIZE) / sizeof(int))
#endif

typedef struct rt_siginfo {
	int	si_signo;
	int	si_errno;
	int	si_code;
	int	_pad[SI_PAD_SIZE];
} rt_siginfo_t;

typedef struct rt_sigaltstack {
	void	*ss_sp;
	int	ss_flags;
	size_t	ss_size;
} rt_stack_t;

struct rt_ucontext {
	unsigned long		uc_flags;
	struct rt_ucontext	*uc_link;
	rt_stack_t		uc_stack;
	struct rt_sigcontext	uc_mcontext;
	k_rtsigset_t		uc_sigmask;	/* mask last for extensibility */
	int                     __unused[32 - (sizeof (k_rtsigset_t) / sizeof (int))];
	unsigned long           uc_regspace[128] __attribute__((__aligned__(8)));
};

extern int construct_sigframe(struct rt_sigframe *sigframe,
			      struct rt_sigframe *rsigframe,
			      CoreEntry *core);

/*
 * FIXME Convert it to inline helper, which requires
 *	 to unweave types mess we've generated for
 *	 run-time data.
 */
#define setup_sas(sigframe, sas)											\
do {															\
	if ((sas)) {													\
		RT_SIGFRAME_UC((sigframe)).uc_stack.ss_sp	= (void *)decode_pointer((sas)->ss_sp);			\
		RT_SIGFRAME_UC((sigframe)).uc_stack.ss_flags	= (int)(sas)->ss_flags;					\
		RT_SIGFRAME_UC((sigframe)).uc_stack.ss_size	= (size_t)(sas)->ss_size;				\
	}														\
} while (0)

#endif /* __CR_SIGFRAME_H__ */