Commit | Line | Data |
---|---|---|
9899b113 TL |
1 | # |
2 | /* | |
3 | * | |
4 | * UNIX debugger | |
5 | * | |
6 | */ | |
7 | ||
8 | #include "defs.h" | |
9 | #include "a.out.h" | |
10 | SCCSID(@(#)setup.c 2.5); | |
11 | ||
12 | ||
13 | MSG BADNAM; | |
14 | MSG BADMAG; | |
15 | ||
16 | MAP txtmap; | |
17 | MAP datmap; | |
18 | SYMSLAVE *symvec; | |
19 | INT wtflag; | |
20 | INT fcor; | |
21 | INT fsym; | |
22 | L_INT maxfile; | |
23 | L_INT maxstor; | |
24 | L_INT txtsiz; | |
25 | L_INT datsiz; | |
26 | L_INT datbas; | |
27 | L_INT stksiz; | |
28 | STRING errflg; | |
29 | INT magic; | |
30 | L_INT symbas; | |
31 | L_INT symnum; | |
32 | L_INT entrypt; | |
33 | ||
34 | INT argcount; | |
35 | INT signo; | |
36 | struct user u; | |
37 | ||
38 | STRING symfil = "a.out"; | |
39 | STRING corfil = "core"; | |
40 | ||
41 | #define TXTHDRSIZ (sizeof(txthdr)) | |
42 | ||
43 | #ifndef EDDT | |
44 | readl(f,p,n) int f,n; long * p;{ | |
45 | #ifndef vax | |
46 | int t=0; | |
47 | do {t += read(f,&(p->loword),2); t += read(f,&(p->hiword),2); p++;} while (--n); | |
48 | return(t); | |
49 | #else | |
50 | return(read(f,p,n*sizeof(long))); | |
51 | #endif | |
52 | } | |
53 | #endif | |
54 | ||
55 | setsym() | |
56 | { | |
57 | #ifndef EDDT | |
58 | INT relflg; | |
59 | INT symval, symflg; | |
60 | SYMSLAVE *symptr; | |
61 | SYMPTR symp; | |
62 | TXTHDR txthdr; | |
63 | ||
64 | fsym=getfile(symfil,1); | |
65 | txtmap.ufd=fsym; | |
66 | IF readl(fsym, txthdr, TXTHDRSIZ/sizeof(txthdr[0]))==TXTHDRSIZ | |
67 | THEN magic=txthdr[0]; | |
68 | IF magic!=0411 ANDF magic!=0410 ANDF magic!=0407 ANDF magic!=0405 | |
69 | THEN magic=0; | |
70 | ELSE symnum=txthdr[4]/SYMTABSIZ; | |
71 | txtsiz=txthdr[1]; | |
72 | datsiz=txthdr[2]; | |
73 | symbas=txtsiz+datsiz; | |
74 | txtmap.b1=0; | |
75 | txtmap.e1=(magic==0407?symbas:txtsiz); | |
76 | txtmap.f1 = TXTHDRSIZ; | |
77 | txtmap.b2=datbas=(magic==0410?round(txtsiz,TXTRNDSIZ):0); | |
78 | txtmap.e2=txtmap.b2+(magic==0407?symbas:datsiz); | |
79 | txtmap.f2 = TXTHDRSIZ+(magic==0407?0:txtmap.e1); | |
80 | entrypt=txthdr[5]; | |
81 | /* relflg=txthdr[7]; | |
82 | /* IF relflg!=1 THEN symbas =<< 1; FI | |
83 | */ | |
84 | symbas += txthdr[6]+txthdr[7]; | |
85 | symbas += TXTHDRSIZ; | |
86 | ||
87 | /* set up symvec */ | |
88 | symvec=sbrk(shorten((1+symnum))*sizeof (SYMSLAVE)); | |
89 | IF (symptr=symvec)==-1 | |
90 | THEN printf("%s\n",BADNAM); | |
91 | symptr=symvec=sbrk(sizeof (SYMSLAVE)); | |
92 | ELSE symset(); | |
93 | WHILE (symp=symget()) ANDF errflg==0 | |
94 | DO | |
95 | symflg=symp->symf; | |
96 | symptr->valslave=symp->symv; | |
97 | symptr->typslave=SYMTYPE(symflg); | |
98 | IF (symflg & STABTYPES) != 0 | |
99 | THEN | |
100 | symptr->typslave=XSYM; | |
101 | FI | |
102 | symptr++; | |
103 | OD | |
104 | FI | |
105 | symptr->typslave=ESYM; | |
106 | FI | |
107 | FI | |
108 | IF magic==0 THEN txtmap.e1=maxfile; FI | |
109 | #endif | |
110 | } | |
111 | ||
112 | setcor() | |
113 | { | |
114 | #ifndef EDDT | |
115 | fcor=getfile(corfil,2); | |
116 | datmap.ufd=fcor; | |
117 | IF read(fcor, &u, ctob(4))==ctob(4) | |
118 | ANDF (u.u_pcb.pcb_ksp & 0xF0000000L)==0x80000000L | |
119 | ANDF (u.u_pcb.pcb_usp & 0xF0000000L)==0x70000000L | |
120 | THEN signo = u.u_arg[0]&017; | |
121 | txtsiz = ctob(u.u_tsize); | |
122 | datsiz = ctob(u.u_dsize); | |
123 | stksiz = ctob(u.u_ssize); | |
124 | datmap.b1 = datbas = (magic==0410?round(txtsiz,TXTRNDSIZ):0); | |
125 | datmap.e1=(magic==0407?txtsiz:datmap.b1)+datsiz; | |
126 | datmap.f1 = ctob(USIZE); | |
127 | datmap.b2 = maxstor-stksiz; | |
128 | datmap.e2 = maxstor; | |
129 | datmap.f2 = ctob(USIZE)+(magic==0410?datsiz:datmap.e1); | |
130 | signo = *(ADDR *)(((ADDR)&u)+ctob(4)-4*4); | |
131 | IF magic ANDF magic!=u.u_exdata.ux_mag | |
132 | THEN printf("%s\n",BADMAG); | |
133 | FI | |
134 | ELSE datmap.e1 = maxfile; | |
135 | FI | |
136 | #endif | |
137 | } | |
138 | ||
139 | #ifndef EDDT | |
140 | create(f) | |
141 | STRING f; | |
142 | { int fd; | |
143 | IF (fd=creat(f,0644))>=0 | |
144 | THEN close(fd); return(open(f,wtflag)); | |
145 | ELSE return(-1); | |
146 | FI | |
147 | } | |
148 | ||
149 | getfile(filnam,cnt) | |
150 | STRING filnam; | |
151 | { | |
152 | REG INT fsym; | |
153 | ||
154 | IF !eqstr("-",filnam) | |
155 | THEN fsym=open(filnam,wtflag); | |
156 | IF fsym<0 ANDF argcount>cnt | |
157 | THEN IF wtflag | |
158 | THEN fsym=create(filnam); | |
159 | FI | |
160 | IF fsym<0 | |
161 | THEN printf("cannot open `%s'\n", filnam); | |
162 | FI | |
163 | FI | |
164 | ELSE fsym = -1; | |
165 | FI | |
166 | return(fsym); | |
167 | } | |
168 | #endif |