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Sprite 1984 - 1993
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Sprite 1984 - 1993.iso
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ds3100.md
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sys
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machSignal.h
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C/C++ Source or Header
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1991-09-03
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/*
* Copyright (c) 1991, Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
* @(#)machSignal.h 7.3 (Berkeley) 5/14/88
* $Header: /sprite/src/lib/include/ds3100.md/sys/RCS/machSignal.h,v 1.1 91/08/26 14:44:23 shirriff Exp Locker: shirriff $
*/
#ifndef _SYS_SIGNAL
#define _SYS_SIGNAL
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. On some systems it is also made
* available to the handler to allow it to properly restore state if a
* non-standard exit is performed. However, user programs should not
* rely on having access to this information.
*/
/*
* WARNING: THE sigcontext MUST BE KEPT CONSISTENT WITH /usr/include/setjmp.h
* AND THE LIBC ROUTINES setjmp() AND longjmp()
*/
/*
* This declaration comes from:
* /sprite/src/kernel/mach/ds3100.md/ultrixSignal.h.
*/
struct sigcontext {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore */
int sc_pc; /* pc at time of signal */
/*
* General purpose registers
*/
int sc_regs[32]; /* processor regs 0 to 31 */
int sc_mdlo; /* mul/div low */
int sc_mdhi; /* mul/div high */
/*
* Floating point coprocessor state
*/
int sc_ownedfp; /* fp has been used */
int sc_fpregs[32]; /* fp regs 0 to 31 */
int sc_fpc_csr; /* floating point control and status reg */
int sc_fpc_eir; /* floating point exception instruction reg */
/*
* END OF REGION THAT MUST AGREE WITH setjmp.h
* END OF jmp_buf REGION
*/
/*
* System coprocessor registers at time of signal
*/
int sc_cause; /* cp0 cause register */
int sc_badvaddr; /* cp0 bad virtual address */
int sc_badpaddr; /* cpu bd bad physical address */
};
#endif /* _SYS_SIGNAL */