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BSD 3 development
[unix-history] / usr / src / cmd / sdb / docomm.c
#include <signal.h>
#include "head.h"
#include <a.out.h>
struct user u;
L_INT cntval;
INT signo;
INT adrflg;
INT pid;
ADDR userpc;
char *s;
enum {NOCOM, PRCOM, DSCOM} lastcom;
docommand() {
register char *p;
register int i;
register ADDR addr, bkaddr;
struct proct *procp;
cntval = 1;
adrflg = 0;
errflg = 0;
if (scallf) {
doscall();
setcur(1);
lastcom = NOCOM;
return;
}
if (reflag) { /* search for regular expression */
dore();
lastcom = PRCOM;
return;
}
if (cmd == '\0') {
if (integ != 0 && var[0] != '\0') {
error("Invalid command (1)");
return;
}
if (integ != 0) { /* print line number */
ffind(integ);
fprint();
lastcom = PRCOM;
return;
}
if (var[0] != 0) {
printf("Unexpected null command\n");
return;
}
}
switch (cmd) {
case 'Y':
debug = !debug;
break;
case 'V':
version();
break;
case 'a':
if (integ) {
cpstr(args, "l\n");
} else if (proc[0]) {
cpall(args, "T\n");
} else {
error("Bad arguments");
break;
}
goto setbrk;
break;
case 'l':
setcur(1);
lastcom = NOCOM;
break;
case 'T':
prfrx(1);
lastcom = NOCOM;
break;
case 't':
prframe();
lastcom = NOCOM;
break;
case 'e':
p = args;
if (*p == '\0') {
printf("%.8s() in \"%s\"\n",
curproc()->pname, curfile);
break;
}
while (*p != '\0')
if (*p++ == '.') goto l1;
/* argument is procedure name */
procp = findproc(args);
if ((procp->pname[0] != '\0') && (procp->sfptr != badfile)) {
finit(adrtofilep(procp->paddr)->sfilename);
ffind(procp->lineno);
}
else printf("Can't find %s\n", args);
printf("%.8s() in \"%s\"\n", curproc()->pname, curfile);
lastcom = NOCOM;
break;
l1: /* argument is filename */
finit(args);
printf("\"%s\"\n", curfile);
lastcom = NOCOM;
break;
case 'p':
if (integ) ffind(integ);
fprint();
lastcom = PRCOM;
break;
case 'q':
exit(0);
case 'w':
if (integ) ffind(integ);
i = fline;
fback(WINDOW/2);
fprintn(WINDOW);
ffind(i);
lastcom = PRCOM;
break;
case 'X':
prdebug();
break;
case 'z':
if (integ) ffind(integ);
fprintn(WINDOW);
lastcom = PRCOM;
break;
case '-':
fback(integ ? integ : 1);
fpargs();
lastcom = PRCOM;
break;
case '+':
fforward(integ ? integ : 1);
fpargs();
lastcom = PRCOM;
break;
case '\n':
switch (lastcom) {
case PRCOM:
fforward(1);
fprint();
break;
case DSCOM:
oaddr += oincr ? oincr : typetosize(otype, WORDSIZE);
printf("0x%x/ ", oaddr);
dispf((ADDR) oaddr, odesc,
oclass == N_RSYM ? oclass : N_GSYM, otype, 0, 0);
break;
}
break;
case '\004':
fforward(1);
printf("\b");
fprintn(WINDOW);
lastcom = PRCOM;
break;
case 'r':
if (args[0] == '\0') getargs();
case 'R':
signo = 0;
cpstr(oldargs, args);
if (debug) error("calling dopcs");
if (integ) cntval = integ;
if (!executing) {
executing = TRUE;
if (integ) cntval = integ;
dopcs('r');
executing = FALSE;
}
if (debug) error("exiting dopcs");
bkaddr = -1;
goto f1;
case 'c':
signo = 0;
case 'C':
if (proc[0] != '\0' || integ != 0) {
dot = getaddr(proc, integ);
if (dot == -1) {
error("Cannot set temporary breakpoint");
break;
}
dopcs('b');
bkaddr = dot;
} else
bkaddr = -1;
integ = atoi(args);
f1: if (debug) error("calling dopcs");
if (integ) cntval = integ;
dopcs('c');
if (debug) error("exiting dopcs");
if (bkaddr != -1) {
ADDR dotsave;
dotsave = dot;
dot = bkaddr;
dopcs('d');
dot = dotsave;
}
if (!signo) printf("Breakpoint");
printf(" at\n");
setcur(1);
lastcom = NOCOM;
break;
case 'S':
case 's':
signo = 0;
integ = atoi(args);
singstep(integ ? integ : 1, cmd);
if (signo) printf("\n");
setcur(1);
lastcom = NOCOM;
break;
case 'g':
if (pid == 0 || signo) {
error("Not stopped at breakpoint");
}
dot = getaddr(proc, integ);
if (dot == -1) {
error("Bad address");
break;
}
adrflg = 1;
integ = atoi(args);
if (integ) cntval = integ;
dopcs('c');
if (!signo) printf("Breakpoint");
printf(" at\n");
setcur(1);
lastcom = NOCOM;
break;
case 'k':
if (scallx) {
userpc = dot = *(ADDR *)(((ADDR)&u)+PC) = pcs;
*(ADDR *)(((ADDR)&u)+FP) = fps;
*(ADDR *)(((ADDR)&u)+AP) = aps;
if (bkpts)
bkpts->flag = flagss;
scallx = 0;
error("Procedure killed");
longjmp(env, 0);
} else {
dopcs('k');
printf("\n");
lastcom = NOCOM;
break;
}
case 'B':
prbkpt();
break;
case 'b':
setbrk:
if (proc[0] == '\0' && integ == 0) {
integ = fline;
}
dot = getaddr(proc,integ);
if (dot == -1 || dot == 0) {
error("Cannot set breakpoint");
break;
}
dopcs('b');
s = " b\n";
s[1] = cmd;
printbkpt(s, adrtoprocp(dot)->pname,
adrtolineno(dot));
break;
case 'd':
if (proc[0] == '\0' && integ == 0) {
idbkpt();
break;
}
dot = getaddr(proc,integ);
if (dot == -1) {
error("Non existent breakpoint");
break;
}
dopcs('d');
break;
case 'D':
dabkpt();
error("All breakpoints deleted");
break;
case 'm':
addr = varaddr(proc[0] ? proc : curproc()->pname, var);
printf("stopped with value %d\n", monex(addr, 'd'));
setcur(1);
lastcom = NOCOM;
break;
case '/':
if (var[0] == '.' && var[1] == '\0') {
if (integ == 0) integ = oaddr;
dispf((ADDR) integ, args[0] ? args : odesc,
oclass == N_RSYM ? oclass : N_GSYM, otype, 0, 0);
oaddr = integ;
} else
if (integ && (var[0] == '\0')) {
dispf((ADDR) integ, args, N_GSYM, 0, 0, 0);
oaddr = integ;
cpstr(odesc, args);
oclass = N_GSYM;
otype = 0;
} else
dispvar(proc, var, args);
lastcom = DSCOM;
break;
case '=':
if (var[0] == '\0') {
if (proc[0]) {
addr = getaddr(proc, integ);
if (addr == -1) {
error("Unknown address");
break;
}
}
else
addr = integ;
dispf(addr, args[0] ? args : "x", 0, -1, 0, 0);
} else
findvar(proc, var, args[0] ? args : "x", 2);
break;
case '!':
if (var[0] == '\0')
addr = getaddr(proc, integ);
else
addr = varaddr(proc, var);
if (addr == -1)
error("Unknown variable");
else {
if (number(args[0]) || eqany(args[0], ".-")) {
char *p;
double atof();
union {
struct{
int w1, w2;
};
struct {
double d;
};
} dbl;
p = (args[0] == '-') ? args+1 : args;
for (; *p != '.' && *p != 'e'; p++) {
if (!number(*p)) goto l2;
}
dbl.d = atof(args);
putval(addr, 'd', dbl.w1);
if (typetodesc(sl_type,0)[0] == 'g')
putval(addr+WORDSIZE, 'd', dbl.w2);
break;
}
l2: if (sl_class == N_RSYM && addr < 16)
putreg(addr,typetodesc(sl_type,subflag)[0],
argvalue(args));
else
putval(addr,typetodesc(sl_type,subflag)[0],
argvalue(args));
}
lastcom = NOCOM;
break;
case '"':
printf(args);
break;
}
}
fpargs() {
register int i;
switch(args[0]) {
case 'p':
case '\0':
fprint();
break;
case 'w':
i = fline;
fback(WINDOW/2);
fprintn(WINDOW);
ffind(i);
break;
case 'z':
fprintn(WINDOW);
break;
}
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.