rst@tardis.UUCP (Robert Thau) (02/08/85)
Adb, as distributed by SRI, does not work with networking kernels. It is incapable of reading or writing registers, and horrible things happen when you try to use core files. Two fixes are needed to get something that will work out of the compiler. The first, in pcs.c, is to replace the line POS corhdr[512]; with POS corhdr[ctob(UPAGES)/sizeof(POS)]; Secondly, in defs.h, replace #define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */ with the following: #ifdef UCB_NET #define UAR0 (&corhdr[01775])/* default address of r0 (u.u_ar0) */ #else #define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */ #endif Finally, before recompiling, make sure that /usr/include/sys/param.h is up-to-date (i.e. it defines UCB_NET), since otherwise the above changes make no difference at all. (Unfortunately, there's no trivial six-line change which will give an adb binary that works with both kinds of kernel). Robert Thau rst@tardis.ARPA
ps@uok.UUCP (02/17/85)
This set of modifications seem to make adb work fairly well for me. I
don't use adb very much except for the occassional debugging session,
and not much at all on kernel dumps anymore. (I have a version of
crash that is much better and easier to use.)
*** defs.h.1 Sun Nov 4 13:09:59 1984
--- defs.h Sun Nov 4 13:34:03 1984
***************
*** 109,114
* If it doesn't correspond to reality, use pstat -u on a core file to get uar0,
* subtract 0140000, and divide by 2 (sizeof int).
*/
#define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */
#define KR0 2 /* location of r0 in kernel dump */
--- 109,116 -----
* If it doesn't correspond to reality, use pstat -u on a core file to get uar0,
* subtract 0140000, and divide by 2 (sizeof int).
*/
+ #define UAR0 (&corhdr[ctob(USIZE)/sizeof(POS) - 3]) /* default address of r0 (u.u_ar0) */
+ #ifdef old_and_notused_anymore
#define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */
#endif
***************
*** 110,115
* subtract 0140000, and divide by 2 (sizeof int).
*/
#define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */
#define KR0 2 /* location of r0 in kernel dump */
#define KR1 3
--- 112,118 -----
#define UAR0 (&corhdr[ctob(USIZE)/sizeof(POS) - 3]) /* default address of r0 (u.u_ar0) */
#ifdef old_and_notused_anymore
#define UAR0 (&corhdr[509]) /* default address of r0 (u.u_ar0) */
+ #endif
#define KR0 2 /* location of r0 in kernel dump */
#define KR1 3
*** pcs.c.1 Sun Nov 4 13:20:13 1984
--- pcs.c Sun Nov 4 13:18:20 1984
***************
*** 19,25
CHAR *lp;
CHAR lastc;
! POS corhdr[512];
POS *endhdr;
MAP txtmap;
--- 19,25 -----
CHAR *lp;
CHAR lastc;
! POS corhdr[ctob(USIZE)/sizeof(POS)]; /* was just 512 */
POS *endhdr;
MAP txtmap;
*** setup.c.1 Sun Nov 4 13:24:52 1984
--- setup.c Tue Nov 6 10:04:50 1984
***************
*** 36,42
long tell();
INT argcount;
INT signo;
! POS corhdr[512];
POS *uar0 = UAR0;
STRING symfil "a.out";
--- 36,42 -----
long tell();
INT argcount;
INT signo;
! POS corhdr[ctob(USIZE)/sizeof(POS)]; /* was just 512 */
POS *uar0 = UAR0;
STRING symfil "a.out";
***************
*** 109,115
txtmap.bo = round(txtsiz, TXTRNDSIZ);
txtmap.eo = 0;
txtmap.fo = 0;
! FOR ovly = 0; ovly < 7; ovly++
DO ovloff[ovly] = ovlsiz + txtsiz
+TXTHDRSIZ+OVLHDRSIZ;
ovlsiz += ovlseg.ov[ovly];
--- 109,115 -----
txtmap.bo = round(txtsiz, TXTRNDSIZ);
txtmap.eo = 0;
txtmap.fo = 0;
! FOR ovly = 0; ovly < NOVL; ovly++
DO ovloff[ovly] = ovlsiz + txtsiz
+TXTHDRSIZ+OVLHDRSIZ;
ovlsiz += ovlseg.ov[ovly];
***************
*** 173,179
datmap.b2 = maxstor-stksiz;
datmap.e2 = maxstor;
ELSE datsiz = round(datsiz+bss,64L);
! stksiz = 02000L;
datmap.f1 = 0;
datmap.b2 = 0140000L;
datmap.e2 = 0142000L;
--- 173,179 -----
datmap.b2 = maxstor-stksiz;
datmap.e2 = maxstor;
ELSE datsiz = round(datsiz+bss,64L);
! stksiz = (long)(ctob(USIZE));
datmap.f1 = 0;
datmap.b2 = 0140000L;
datmap.e2 = 0140000L + stksiz;
***************
*** 176,182
stksiz = 02000L;
datmap.f1 = 0;
datmap.b2 = 0140000L;
! datmap.e2 = 0142000L;
FI
switch (magic)
{
--- 176,182 -----
stksiz = (long)(ctob(USIZE));
datmap.f1 = 0;
datmap.b2 = 0140000L;
! datmap.e2 = 0140000L + stksiz;
FI
switch (magic)
{
***************
*** 239,245
else if (magic) {
register POS *ar0;
ar0 = (POS *)(((U *)corhdr)->u_ar0);
! if ((ar0>(POS *)0140000) & (ar0<(POS *)0142000)
&& !(ar0&01))
uar0 = ar0 - 0140000 + (unsigned)corhdr;
if (overlay) {
--- 239,245 -----
else if (magic) {
register POS *ar0;
ar0 = (POS *)(((U *)corhdr)->u_ar0);
! if ((ar0>(POS *)0140000) & (ar0<(POS *)(0140000+ctob(USIZE)))
&& !(ar0&01))
uar0 = ar0 - 0140000 + (unsigned)corhdr;
if (overlay) {