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BSD 4_1c_2 release
[unix-history] / usr / src / bin / adb / print.c
static char sccsid[] = "@(#)print.c 4.5 7/23/82";
/*
*
* UNIX debugger
*
*/
#include "defs.h"
MSG LONGFIL;
MSG NOTOPEN;
MSG A68BAD;
MSG A68LNK;
MSG BADMOD;
MAP txtmap;
MAP datmap;
ADDR lastframe;
ADDR callpc;
INT infile;
INT outfile;
CHAR *lp;
L_INT maxoff;
L_INT maxpos;
INT radix;
/* symbol management */
L_INT localval;
/* breakpoints */
BKPTR bkpthead;
REGLIST reglist [] = {
"p1lr", P1LR, &pcb.pcb_p1lr,
"p1br", P1BR, &pcb.pcb_p1br,
"p0lr", P0LR, &pcb.pcb_p0lr,
"p0br", P0BR, &pcb.pcb_p0br,
"ksp", KSP, &pcb.pcb_ksp,
"esp", ESP, &pcb.pcb_esp,
"ssp", SSP, &pcb.pcb_ssp,
"psl", PSL, &pcb.pcb_psl,
"pc", PC, &pcb.pcb_pc,
"usp", USP, &pcb.pcb_usp,
"fp", FP, &pcb.pcb_fp,
"ap", AP, &pcb.pcb_ap,
"r11", R11, &pcb.pcb_r11,
"r10", R10, &pcb.pcb_r10,
"r9", R9, &pcb.pcb_r9,
"r8", R8, &pcb.pcb_r8,
"r7", R7, &pcb.pcb_r7,
"r6", R6, &pcb.pcb_r6,
"r5", R5, &pcb.pcb_r5,
"r4", R4, &pcb.pcb_r4,
"r3", R3, &pcb.pcb_r3,
"r2", R2, &pcb.pcb_r2,
"r1", R1, &pcb.pcb_r1,
"r0", R0, &pcb.pcb_r0,
};
char lastc;
INT fcor;
STRING errflg;
INT signo;
INT sigcode;
L_INT dot;
L_INT var[];
STRING symfil;
STRING corfil;
INT pid;
L_INT adrval;
INT adrflg;
L_INT cntval;
INT cntflg;
STRING signals[] = {
"",
"hangup",
"interrupt",
"quit",
"illegal instruction",
"trace/BPT",
"IOT",
"EMT",
"floating exception",
"killed",
"bus error",
"memory fault",
"bad system call",
"broken pipe",
"alarm call",
"terminated",
"signal 16",
"stop (signal)",
"stop (tty)",
"continue (signal)",
"child termination",
"stop (tty input)",
"stop (tty output)",
"input available (signal)",
"cpu timelimit",
"file sizelimit",
"signal 26",
"signal 27",
"signal 28",
"signal 29",
"signal 30",
"signal 31",
};
/* general printing routines ($) */
printtrace(modif)
{
INT narg, i, stat, name, limit;
POS dynam;
REG BKPTR bkptr;
CHAR hi, lo;
ADDR word;
STRING comptr;
ADDR argp, frame, link;
register struct nlist *sp;
INT stack;
INT ntramp;
IF cntflg==0 THEN cntval = -1; FI
switch (modif) {
case '<':
IF cntval == 0
THEN WHILE readchar() != EOR
DO OD
lp--;
break;
FI
IF rdc() == '<'
THEN stack = 1;
ELSE stack = 0; lp--;
FI
/* fall through */
case '>':
{CHAR file[64];
CHAR Ifile[128];
extern CHAR *Ipath;
INT index;
index=0;
IF rdc()!=EOR
THEN REP file[index++]=lastc;
IF index>=63 THEN error(LONGFIL); FI
PER readchar()!=EOR DONE
file[index]=0;
IF modif=='<'
THEN IF Ipath THEN
strcpy(Ifile, Ipath);
strcat(Ifile, "/");
strcat(Ifile, file);
FI
IF strcmp(file, "-")!=0
THEN iclose(stack, 0);
infile=open(file,0);
IF infile<0
THEN infile=open(Ifile,0);
FI
ELSE lseek(infile, 0L, 0);
FI
IF infile<0
THEN infile=0; error(NOTOPEN);
ELSE IF cntflg
THEN var[9] = cntval;
ELSE var[9] = 1;
FI
FI
ELSE oclose();
outfile=open(file,1);
IF outfile<0
THEN outfile=creat(file,0644);
#ifndef EDDT
ELSE lseek(outfile,0L,2);
#endif
FI
FI
ELSE IF modif == '<'
THEN iclose(-1, 0);
ELSE oclose();
FI
FI
lp--;
}
break;
case 'p':
IF kernel == 0 THEN
printf("not debugging kernel\n");
ELSE
IF adrflg THEN
int pte = access(RD, dot, DSP, 0);
masterpcbb = (pte&PG_PFNUM)*512;
FI
getpcb();
FI
break;
case 'd':
if (adrflg) {
if (adrval<2 || adrval>16) {printf("must have 2 <= radix <= 16"); break;}
printf("radix=%d base ten",radix=adrval);
}
break;
case 'q': case 'Q': case '%':
done();
case 'w': case 'W':
maxpos=(adrflg?adrval:MAXPOS);
break;
case 's': case 'S':
maxoff=(adrflg?adrval:MAXOFF);
break;
case 'v': case 'V':
prints("variables\n");
FOR i=0;i<=35;i++
DO IF var[i]
THEN printc((i<=9 ? '0' : 'a'-10) + i);
printf(" = %X\n",var[i]);
FI
OD
break;
case 'm': case 'M':
printmap("? map",&txtmap);
printmap("/ map",&datmap);
break;
case 0: case '?':
IF pid
THEN printf("pcs id = %d\n",pid);
ELSE prints("no process\n");
FI
sigprint(); flushbuf();
case 'r': case 'R':
printregs();
return;
case 'c': case 'C':
IF adrflg
THEN frame=adrval;
word=get(adrval+6,DSP)&0xFFFF;
IF word&0x2000
THEN /* 'calls', can figure out argp */
argp=adrval+20+((word>>14)&3); word &= 0xFFF;
WHILE word DO IF word&1 THEN argp+=4; FI word>>=1; OD
ELSE /* 'callg', can't tell where argp is */ argp=frame;
FI
callpc=get(frame+16,DSP);
ELIF kcore THEN
argp = pcb.pcb_ap;
frame = pcb.pcb_fp;
callpc = pcb.pcb_pc;
ELSE argp= *(ADDR *)(((ADDR)&u)+AP);
frame= *(ADDR *)(((ADDR)&u)+FP);
callpc= *(ADDR *)(((ADDR)&u)+PC);
FI
lastframe=0;
ntramp = 0;
WHILE cntval--
DO char *name;
chkerr();
if (callpc > 0x80000000 - 0x200 * UPAGES) {
name = "sigtramp";
ntramp++;
} else {
ntramp = 0;
findsym(callpc,ISYM);
if (cursym &&
!strcmp(cursym->n_un.n_name, "start"))
break;
if (cursym)
name = cursym->n_un.n_name;
else
name = "?";
}
printf("%s(", name);
narg = get(argp,DSP); IF narg&~0xFF THEN narg=0; FI
LOOP IF narg==0 THEN break; FI
printf("%R", get(argp += 4, DSP));
IF --narg!=0 THEN printc(','); FI
POOL
printf(") from %X\n",callpc); /* jkf mod */
IF modif=='C'
THEN WHILE localsym(frame,argp)
DO word=get(localval,DSP);
printf("%8t%s:%10t", cursym->n_un.n_name);
IF errflg THEN prints("?\n"); errflg=0; ELSE printf("%R\n",word); FI
OD
FI
if (ntramp == 1)
callpc=get(frame+64, DSP);
else
callpc=get(frame+16, DSP);
argp=get(frame+8, DSP);
lastframe=frame;
frame=get(frame+12, DSP)&EVEN;
IF frame==0 ORF (!adrflg ANDF !INSTACK(frame))
THEN break;
FI
OD
break;
/*print externals*/
case 'e': case 'E':
for (sp = symtab; sp < esymtab; sp++) {
if (sp->n_type==(N_DATA|N_EXT) ORF sp->n_type==(N_BSS|N_EXT))
printf("%s:%12t%R\n", sp->n_un.n_name, get(sp->n_value,DSP));
}
break;
case 'a': case 'A':
error("No algol 68 on VAX");
/*NOTREACHED*/
/*print breakpoints*/
case 'b': case 'B':
printf("breakpoints\ncount%8tbkpt%24tcommand\n");
for (bkptr=bkpthead; bkptr; bkptr=bkptr->nxtbkpt)
if (bkptr->flag) {
printf("%-8.8d",bkptr->count);
psymoff(leng(bkptr->loc),ISYM,"%24t");
comptr=bkptr->comm;
WHILE *comptr DO printc(*comptr++); OD
}
break;
default: error(BADMOD);
}
}
printmap(s,amap)
STRING s; MAP *amap;
{
int file;
file=amap->ufd;
printf("%s%12t`%s'\n",s,(file<0 ? "-" : (file==fcor ? corfil : symfil)));
printf("b1 = %-16R",amap->b1);
printf("e1 = %-16R",amap->e1);
printf("f1 = %-16R",amap->f1);
printf("\nb2 = %-16R",amap->b2);
printf("e2 = %-16R",amap->e2);
printf("f2 = %-16R",amap->f2);
printc(EOR);
}
printregs()
{
REG REGPTR p;
L_INT v;
FOR p=reglist; p < &reglist[24]; p++
DO v = kcore ? *p->rkern : *(ADDR *)(((ADDR)&u)+p->roffs);
printf("%s%6t%R %16t", p->rname, v);
valpr(v,(p->roffs==PC?ISYM:DSYM));
printc(EOR);
OD
printpc();
}
getreg(regnam) {
REG REGPTR p;
REG STRING regptr;
CHAR *olp;
CHAR regnxt;
olp=lp;
FOR p=reglist; p < &reglist[24]; p++
DO regptr=p->rname;
IF (regnam == *regptr++)
THEN
WHILE *regptr
DO IF (regnxt=readchar()) != *regptr++
THEN --regptr; break;
FI
OD
IF *regptr
THEN lp=olp;
ELSE
int i = kcore ? (int)p->rkern : p->roffs;
return (i);
FI
FI
OD
lp=olp;
return(0);
}
printpc()
{
dot= *(ADDR *)(((ADDR)&u)+PC);
psymoff(dot,ISYM,":%16t"); printins(0,ISP,chkget(dot,ISP));
printc(EOR);
}
char *illinames[] = {
"reserved addressing fault",
"priviliged instruction fault",
"reserved operand fault"
};
char *fpenames[] = {
0,
"integer overflow trap",
"integer divide by zero trap",
"floating overflow trap",
"floating/decimal divide by zero trap",
"floating underflow trap",
"decimal overflow trap",
"subscript out of range trap",
"floating overflow fault",
"floating divide by zero fault",
"floating undeflow fault"
};
sigprint()
{
IF (signo>=0) ANDF (signo<sizeof signals/sizeof signals[0])
THEN prints(signals[signo]); FI
switch (signo) {
case SIGFPE:
IF (sigcode > 0 &&
sigcode < sizeof fpenames / sizeof fpenames[0]) THEN
prints(" ("); prints(fpenames[sigcode]); prints(")");
FI
break;
case SIGILL:
IF (sigcode >= 0 &&
sigcode < sizeof illinames / sizeof illinames[0]) THEN
prints(" ("); prints(illinames[sigcode]); prints(")");
FI
break;
}
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.