minix/nbsd_include/arch/i386/include/signal.h

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2011-02-21 14:13:55 +01:00
#ifndef _I386_SIGNAL_H_
#define _I386_SIGNAL_H_
#include <sys/featuretest.h>
typedef int sig_atomic_t;
/* The following structure should match the stackframe_s structure used
* by the kernel's context switching code. Floating point registers should
* be added in a different struct.
*/
#include <machine/stackframe.h>
#include <machine/fpu.h>
typedef struct stackframe_s sigregs;
struct sigframe { /* stack frame created for signalled process */
void (*sf_retadr)(void);
int sf_signo;
int sf_code;
struct sigcontext *sf_scp;
int sf_fp;
void (*sf_retadr2)(void);
struct sigcontext *sf_scpcopy;
};
struct sigcontext {
int sc_flags; /* sigstack state to restore (including
* MF_FPU_INITIALIZED)
*/
long sc_mask; /* signal mask to restore */
sigregs sc_regs; /* register set to restore */
union fpu_state_u sc_fpu_state;
};
#if _WORD_SIZE == 4
#define sc_gs sc_regs.gs
#define sc_fs sc_regs.fs
#endif /* _WORD_SIZE == 4 */
#define sc_es sc_regs.es
#define sc_ds sc_regs.ds
#define sc_di sc_regs.di
#define sc_si sc_regs.si
#define sc_fp sc_regs.bp
#define sc_st sc_regs.st /* stack top -- used in kernel */
#define sc_bx sc_regs.bx
#define sc_dx sc_regs.dx
#define sc_cx sc_regs.cx
#define sc_retreg sc_regs.retreg
#define sc_retadr sc_regs.retadr /* return address to caller of
save -- used in kernel */
#define sc_pc sc_regs.pc
#define sc_cs sc_regs.cs
#define sc_psw sc_regs.psw
#define sc_sp sc_regs.sp
#define sc_ss sc_regs.ss
#ifdef _MINIX
__BEGIN_DECLS
int sigreturn(struct sigcontext *_scp);
__END_DECLS
#endif /* _MINIX */
#endif /* !_I386_SIGNAL_H_ */