usr/src/sys/tahoe/include/kdbparam.h

/*      kdbparam.h      7.4     86/11/23        */

#include <sys/vm.h>

#define DBNAME "kdb\n"
#define LPRMODE "%R"
#define OFFMODE "+%R"

#define MAXINT  0x7fffffff
#define MAXSTOR (KERNBASE - ctob(UPAGES))

#define ENTRYMASK       1                       /* check for entry masks */
#define ishiddenreg(p)  ((p) <= &reglist[8])

#define BPT     0x30
#define KCALL   0xcf
#define CASEL   0xfc
#define TBIT    0x10

#define clrsstep()      (pcb.pcb_psl &= ~TBIT)
#define setsstep()      (pcb.pcb_psl |= TBIT)

#define SETBP(ins)      ((BPT<<24) | ((ins) & 0xffffff))

#define getprevpc(fp)   get((fp)-8, DSP)        /* pc of caller */
#define getprevframe(fp) (get((fp), DSP)&~3)    /* fp of caller */
#define getnargs(fp)    (((get((fp)-4, DSP)&0xffff)-4)/4)
#define nextarg(ap)     ((ap) + 4)              /* next argument in list */
#define NOFRAME         0                       /* fp at top of call stack */

#define issignalpc(pc)  (MAXSTOR < (pc) && (pc) < MAXSTOR+ctob(UPAGES))
#define getsignalpc(fp) get((fp)+44, DSP)       /* pc of caller before signal */

#define leng(a)         ((long)((unsigned)(a)))
#define shorten(a)      (((a) >> 16) & 0xffff)
#define itol(a,b)       (((a) << 16) | ((b) & 0xffff))
#define byte(a)         (((a) >> 24) & 0xff)
#define btol(a)         ((a) << 24)

/* 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)      (((int)(x)&0xf0000000) == 0xb0000000)
#define INUDOT(x)       (((int)(x)&0xf0000000) == 0xb0000000)
#define INKERNEL(x)     (((int)(x)&0xf0000000) == 0xc0000000)

#define KERNBASE        0xc0000000
#define KERNOFF         (KERNBASE + 0x800)      /* start of kernel's text */
#define KVTOPH(x)       ((x)&~ 0xc0000000)