/*-
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* This module is believed to contain source code proprietary to AT&T.
* Use and redistribution is subject to the Berkeley Software License
* Agreement and your Software Agreement with AT&T (Western Electric).
*
* @(#)kdbparam.h 7.4 (Berkeley) 5/8/91
*/
#define DBNAME "kdb\n"
#define LPRMODE "%R"
#define OFFMODE "+%R"
#define KDB_IPL 0xf /* highest priority software interrupt */
#define setsoftkdb() mtpr(SIRR, KDB_IPL)
#define MAXINT 0x7fffffff
#define MAXSTOR (KERNBASE - ctob(UPAGES))
#define ENTRYMASK 1 /* check for entry masks */
#define ishiddenreg(p) ((p) <= &kdbreglist[8])
#define BPT 03
#define TBIT 020
#define clrsstep() (kdbpcb.pcb_psl &= ~TBIT)
#define setsstep() (kdbpcb.pcb_psl |= TBIT)
#define SETBP(ins) (BPT | ((ins) & ~0xff))
#define getprevpc(fp) kdbget((fp)+16, DSP) /* pc of caller */
#define getprevframe(fp) (kdbget((fp)+12, DSP)&~2) /* fp of caller */
#define NOFRAME 0 /* fp at top of call stack */
#define issignalpc(pc) (MAXSTOR < (pc) && (pc) < MAXSTOR+ctob(UPAGES))
#define getsignalpc(fp) kdbget((fp)+92, DSP) /* pc of caller before signal */
/* long to ints and back (puns) */
union {
int I[2];
long L;
} itolws;
#define leng(a) itol(0,a)
#define shorten(a) ((short)(a))
#define itol(a,b) (itolws.I[0]=(b), itolws.I[1]=(a), itolws.L)
#define byte(a) ((a) & 0xff)
#define btol(a) ((a))
/* check for address wrap around */
#define addrwrap(oaddr,newaddr) (((oaddr)^(newaddr)) >> 24)
/*
* INSTACK tells whether its argument is a stack address.
* INUDOT tells whether its argument is in the (extended) u. area.
* These are used for consistency checking and dont have to be exact.
*
* INKERNEL tells whether its argument is a kernel space address.
* KVTOPH trims a kernel virtal address back to its offset
* in the kernel address space.
*/
#define INSTACK(x) (((x)&0xf0000000) == 0x70000000)
#define INUDOT(x) (((x)&0xf0000000) == 0x70000000)
#define INKERNEL(x) (((x)&0xf0000000) == 0x80000000)
#define KVTOPH(x) ((x)&~ 0x80000000)
#define KERNOFF 0x80000000