1 /* 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * All advertising materials mentioning features or use of this software 10 * must display the following acknowledgement: 11 * This product includes software developed by the University of 12 * California, Lawrence Berkeley Laboratory. 13 * 14 * %sccs.include.redist.c% 15 * 16 * @(#)signal.h 7.3 (Berkeley) 04/20/93 17 * 18 * from: $Header: signal.h,v 1.5 92/11/26 02:04:46 torek Exp $ 19 */ 20 21 #ifndef LOCORE 22 /* 23 * Information pushed on stack when a signal is delivered. 24 * This is used by the kernel to restore state following 25 * execution of the signal handler. It is also made available 26 * to the handler to allow it to restore state properly if 27 * a non-standard exit is performed. 28 * 29 * All machines must have an sc_onstack and sc_mask. 30 */ 31 struct sigcontext { 32 int sc_onstack; /* sigstack state to restore */ 33 int sc_mask; /* signal mask to restore */ 34 /* begin machine dependent portion */ 35 int sc_sp; /* %sp to restore */ 36 int sc_pc; /* pc to restore */ 37 int sc_npc; /* npc to restore */ 38 int sc_psr; /* psr to restore */ 39 int sc_g1; /* %g1 to restore */ 40 int sc_o0; /* %o0 to restore */ 41 }; 42 #else /* LOCORE */ 43 #define SC_SP_OFFSET 8 44 #define SC_PC_OFFSET 12 45 #define SC_NPC_OFFSET 16 46 #define SC_PSR_OFFSET 20 47 #define SC_G1_OFFSET 24 48 #define SC_O0_OFFSET 28 49 #endif /* LOCORE */ 50 51 /* 52 * `Code' arguments to signal handlers. The names, and the funny numbering. 53 * are defined so as to match up with what SunOS uses; I have no idea why 54 * they did the numbers that way, except maybe to match up with the 68881. 55 */ 56 #define FPE_INTOVF_TRAP 0x01 /* integer overflow */ 57 #define FPE_INTDIV_TRAP 0x14 /* integer divide by zero */ 58 #define FPE_FLTINEX_TRAP 0xc4 /* inexact */ 59 #define FPE_FLTDIV_TRAP 0xc8 /* divide by zero */ 60 #define FPE_FLTUND_TRAP 0xcc /* underflow */ 61 #define FPE_FLTOPERR_TRAP 0xd0 /* operand error */ 62 #define FPE_FLTOVF_TRAP 0xd4 /* overflow */ 63