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