date and time created 81/05/14 15:19:41 by root

SCCS-vsn: old/adb/adb.vax/command.c 4.1

diff --git a/usr/src/old/adb/adb.vax/command.c b/usr/src/old/adb/adb.vax/command.c
new file mode 100644 (file)
index 0000000..7e7e654
--- /dev/null
+++ b/usr/src/old/adb/adb.vax/command.c
@@ -0,0 +1,214 @@
+#
+/*
+ *
+ *     UNIX debugger
+ *
+ */
+
+#include "defs.h"
+static char sccsid[] = "@(#)command.c 4.1 %G%";
+
+MSG            BADEQ;
+MSG            NOMATCH;
+MSG            BADVAR;
+MSG            BADCOM;
+
+MAP            txtmap;
+MAP            datmap;
+INT            executing;
+CHAR           *lp;
+INT            fcor;
+INT            fsym;
+INT            mkfault;
+STRING         errflg;
+
+CHAR           lastc;
+CHAR           eqformat[512] = "z";
+CHAR           stformat[512] = "X\"= \"^i";
+
+L_INT          dot;
+L_INT          ditto;
+INT            dotinc;
+INT            lastcom = '=';
+L_INT          var[];
+L_INT          locval;
+L_INT          locmsk;
+INT            pid;
+L_INT          expv;
+L_INT          adrval;
+INT            adrflg;
+L_INT          cntval;
+INT            cntflg;
+
+
+
+
+/* command decoding */
+
+command(buf,defcom)
+STRING         buf;
+CHAR           defcom;
+{
+       INT             itype, ptype, modifier, regptr;
+       BOOL            longpr, eqcom;
+       CHAR            wformat[1];
+       CHAR            savc;
+       L_INT           w, savdot;
+       STRING          savlp=lp;
+       IF buf
+       THEN IF *buf==EOR
+            THEN return(FALSE);
+            ELSE lp=buf;
+            FI
+       FI
+
+       REP
+       IF adrflg=expr(0)
+       THEN dot=expv; ditto=dot;
+       FI
+       adrval=dot;
+       IF rdc()==',' ANDF expr(0)
+       THEN cntflg=TRUE; cntval=expv;
+       ELSE cntflg=FALSE; cntval=1; lp--;
+       FI
+
+       IF !eol(rdc())
+       THEN lastcom=lastc;
+       ELSE IF adrflg==0 THEN dot=inkdot(dotinc); FI
+            lp--; lastcom=defcom;
+       FI
+
+       switch(lastcom&STRIP) {
+
+           case '/':
+               itype=DSP; ptype=DSYM;
+               goto trystar;
+
+           case '=':
+               itype=NSP; ptype=0;
+               goto trypr;
+
+           case '?':
+               itype=ISP; ptype=ISYM;
+               goto trystar;
+
+           trystar:
+               IF rdc()=='*' THEN lastcom |= QUOTE; ELSE lp--; FI
+               IF lastcom&QUOTE
+               THEN itype |= STAR; ptype = (DSYM+ISYM)-ptype;
+               FI
+
+           trypr:
+               longpr=FALSE; eqcom=lastcom=='=';
+               switch (rdc()) {
+
+                       case 'm':
+                           {/*reset map data*/
+                           INT         fcount;
+                           MAP         *smap;
+                           UNION{MAP *m; L_INT *mp;}amap;
+
+                           IF eqcom THEN error(BADEQ); FI
+                           smap=(itype&DSP?&datmap:&txtmap);
+                           amap.m=smap; fcount=3;
+                           IF itype&STAR
+                           THEN amap.mp += 3;
+                           FI
+                           WHILE fcount-- ANDF expr(0)
+                           DO *(amap.mp)++ = expv; OD
+                           IF rdc()=='?' THEN smap->ufd=fsym;
+                           ELIF lastc == '/' THEN smap->ufd=fcor;
+                           ELSE lp--;
+                           FI
+                           }
+                           break;
+
+                       case 'L':
+                           longpr=TRUE;
+                       case 'l':
+                           /*search for exp*/
+                           IF eqcom THEN error(BADEQ); FI
+                           dotinc=(longpr?4:2); savdot=dot;
+                           expr(1); locval=expv;
+                           IF expr(0) THEN locmsk=expv; ELSE locmsk = -1L; FI
+                               IF !longpr THEN locmsk &= 0xFFFF; locval &= 0xFFFF; FI
+                           LOOP w=get(dot,itype);
+                                IF errflg ORF mkfault ORF (w&locmsk)==locval THEN break; FI
+                                dot=inkdot(dotinc);
+                           POOL
+                           IF errflg
+                           THEN dot=savdot; errflg=NOMATCH;
+                           FI
+                           psymoff(dot,ptype,"");
+                           break;
+
+                       case 'W':
+                           longpr=TRUE;
+                       case 'w':
+                           IF eqcom THEN error(BADEQ); FI
+                           wformat[0]=lastc; expr(1);
+                           REP  savdot=dot; psymoff(dot,ptype,":%16t"); exform(1,wformat,itype,ptype);
+                                errflg=0; dot=savdot;
+                                IF longpr
+                                THEN put(dot,itype,expv);
+                                ELSE put(dot,itype,itol(get(dot+2,itype),expv));
+                                FI
+                                savdot=dot;
+                                printf("=%8t"); exform(1,wformat,itype,ptype);
+                                newline();
+                           PER  expr(0) ANDF errflg==0 DONE
+                           dot=savdot;
+                           chkerr();
+                           break;
+
+                       default:
+                           lp--;
+                           getformat(eqcom ? eqformat : stformat);
+                           IF !eqcom
+                           THEN psymoff(dot,ptype,":%16t");
+                           FI
+                           scanform(cntval,(eqcom?eqformat:stformat),itype,ptype);
+               }
+               break;
+
+           case '>':
+               lastcom=0; savc=rdc();
+               IF regptr=getreg(savc)
+               THEN * (ADDR *) (((ADDR)&u)+regptr)=dot;
+                    ptrace(WUREGS,pid,regptr,* (ADDR *) (((ADDR)&u)+regptr));
+               ELIF (modifier=varchk(savc)) != -1
+               THEN    var[modifier]=dot;
+               ELSE    error(BADVAR);
+               FI
+               break;
+
+           case '!':
+               lastcom=0;
+               shell(); break;
+
+           case '$':
+               lastcom=0;
+               printtrace(nextchar()); break;
+
+           case ':':
+               IF !executing
+               THEN executing=TRUE;
+                    subpcs(nextchar());
+                    executing=FALSE;
+                    lastcom=0;
+               FI
+               break;
+
+           case 0:
+               prints(DBNAME);
+               break;
+
+           default: error(BADCOM);
+       }
+
+       flushbuf();
+       PER rdc()==';' DONE
+       IF buf THEN lp=savlp; ELSE lp--; FI
+       return(adrflg ANDF dot!=0);
+}
+