1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1988 AT&T
24*0Sstevel@tonic-gate * All Rights Reserved
25*0Sstevel@tonic-gate *
26*0Sstevel@tonic-gate *
27*0Sstevel@tonic-gate * Copyright (c) 1998 by Sun Microsystems, Inc.
28*0Sstevel@tonic-gate * All rights reserved.
29*0Sstevel@tonic-gate */
30*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.2 */
31*0Sstevel@tonic-gate
32*0Sstevel@tonic-gate #include <ctype.h>
33*0Sstevel@tonic-gate #include <setjmp.h>
34*0Sstevel@tonic-gate #include <stdlib.h>
35*0Sstevel@tonic-gate #include <string.h>
36*0Sstevel@tonic-gate #include <thread.h>
37*0Sstevel@tonic-gate #include <note.h>
38*0Sstevel@tonic-gate #include "elf_dem.h"
39*0Sstevel@tonic-gate #include "String.h"
40*0Sstevel@tonic-gate #include "msg.h"
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate /* The variable "hold" contains the pointer to the array initially
43*0Sstevel@tonic-gate * handed to demangle. It is returned if it is not possible to
44*0Sstevel@tonic-gate * demangle the string. NULL is returned if a memory allocation
45*0Sstevel@tonic-gate * problem is encountered. Thus one can do the following:
46*0Sstevel@tonic-gate *
47*0Sstevel@tonic-gate * char *mn = "Some mangled name";
48*0Sstevel@tonic-gate * char *dm = mangle(mn);
49*0Sstevel@tonic-gate * if (dm == NULL)
50*0Sstevel@tonic-gate * printf("allocation error\n");
51*0Sstevel@tonic-gate * else if (dm == mn)
52*0Sstevel@tonic-gate * printf("name could not be demangled\n");
53*0Sstevel@tonic-gate * else
54*0Sstevel@tonic-gate * printf("demangled name is: %s\n",dm);
55*0Sstevel@tonic-gate */
56*0Sstevel@tonic-gate static char *hold;
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate /* this String is the working buffer for the demangle
59*0Sstevel@tonic-gate * routine. A pointer into this String is returned
60*0Sstevel@tonic-gate * from demangle when it is possible to demangle the
61*0Sstevel@tonic-gate * String. For this reason, the pointer should not
62*0Sstevel@tonic-gate * be saved between calls of demangle(), nor freed.
63*0Sstevel@tonic-gate */
64*0Sstevel@tonic-gate static String *s = 0;
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate static int
getint(c)67*0Sstevel@tonic-gate getint(c)
68*0Sstevel@tonic-gate char **c;
69*0Sstevel@tonic-gate {
70*0Sstevel@tonic-gate return strtol(*c, c, 10);
71*0Sstevel@tonic-gate }
72*0Sstevel@tonic-gate
73*0Sstevel@tonic-gate /* If a mangled name has a __
74*0Sstevel@tonic-gate * that is not at the very beginning
75*0Sstevel@tonic-gate * of the string, then this routine
76*0Sstevel@tonic-gate * is called to demangle that part
77*0Sstevel@tonic-gate * of the name. All overloaded functions,
78*0Sstevel@tonic-gate * and class members fall into this category.
79*0Sstevel@tonic-gate *
80*0Sstevel@tonic-gate * c should start with two underscores followed by a non-zero digit or an F.
81*0Sstevel@tonic-gate */
82*0Sstevel@tonic-gate static char *
second(c)83*0Sstevel@tonic-gate second(c)
84*0Sstevel@tonic-gate char *c;
85*0Sstevel@tonic-gate {
86*0Sstevel@tonic-gate int n;
87*0Sstevel@tonic-gate if(strncmp(c, MSG_ORIG(MSG_STR_DBLUNDBAR), 2))
88*0Sstevel@tonic-gate return hold;
89*0Sstevel@tonic-gate c += 2;
90*0Sstevel@tonic-gate
91*0Sstevel@tonic-gate if (!(isdigit(*c) || *c == 'F'))
92*0Sstevel@tonic-gate return hold;
93*0Sstevel@tonic-gate
94*0Sstevel@tonic-gate if (isdigit(*c)) {
95*0Sstevel@tonic-gate /* a member */
96*0Sstevel@tonic-gate n = getint(&c);
97*0Sstevel@tonic-gate if (n == 0 || (int) strlen(c) < n)
98*0Sstevel@tonic-gate return hold;
99*0Sstevel@tonic-gate s = prep_String(MSG_ORIG(MSG_STR_DBLCOL), s);
100*0Sstevel@tonic-gate s = nprep_String(c,s,n);
101*0Sstevel@tonic-gate c += n;
102*0Sstevel@tonic-gate }
103*0Sstevel@tonic-gate if(*c == 'F') {
104*0Sstevel@tonic-gate /* an overloaded function */
105*0Sstevel@tonic-gate switch (*++c) {
106*0Sstevel@tonic-gate case '\0':
107*0Sstevel@tonic-gate return hold;
108*0Sstevel@tonic-gate case 'v':
109*0Sstevel@tonic-gate s = app_String(s, MSG_ORIG(MSG_STR_OPENCLOSEPAR));
110*0Sstevel@tonic-gate break;
111*0Sstevel@tonic-gate default:
112*0Sstevel@tonic-gate if(demangle_doargs(&s,c) < 0)
113*0Sstevel@tonic-gate return hold;
114*0Sstevel@tonic-gate }
115*0Sstevel@tonic-gate }
116*0Sstevel@tonic-gate return PTR(s);
117*0Sstevel@tonic-gate }
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate char *
demangle(c)120*0Sstevel@tonic-gate demangle(c)
121*0Sstevel@tonic-gate char *c;
122*0Sstevel@tonic-gate {
123*0Sstevel@tonic-gate register int i = 0;
124*0Sstevel@tonic-gate extern jmp_buf jbuf;
125*0Sstevel@tonic-gate static mutex_t mlock = DEFAULTMUTEX;
126*0Sstevel@tonic-gate
127*0Sstevel@tonic-gate NOTE(MUTEX_PROTECTS_DATA(mlock, String))
128*0Sstevel@tonic-gate (void) mutex_lock(&mlock);
129*0Sstevel@tonic-gate
130*0Sstevel@tonic-gate if (setjmp(jbuf)) {
131*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
132*0Sstevel@tonic-gate return 0;
133*0Sstevel@tonic-gate }
134*0Sstevel@tonic-gate
135*0Sstevel@tonic-gate hold = c;
136*0Sstevel@tonic-gate s = mk_String(s);
137*0Sstevel@tonic-gate s = set_String(s, MSG_ORIG(MSG_STR_EMPTY));
138*0Sstevel@tonic-gate
139*0Sstevel@tonic-gate if(c == 0 || *c == 0) {
140*0Sstevel@tonic-gate c = hold;
141*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
142*0Sstevel@tonic-gate return c;
143*0Sstevel@tonic-gate }
144*0Sstevel@tonic-gate
145*0Sstevel@tonic-gate if(strncmp(c, MSG_ORIG(MSG_STR_DBLUNDBAR), 2) != 0) {
146*0Sstevel@tonic-gate /* If a name does not begin with a __
147*0Sstevel@tonic-gate * but it does contain one, it is either
148*0Sstevel@tonic-gate * a member or an overloaded function.
149*0Sstevel@tonic-gate */
150*0Sstevel@tonic-gate while(c[i] && strncmp(c+i, MSG_ORIG(MSG_STR_DBLUNDBAR), 2))
151*0Sstevel@tonic-gate i++;
152*0Sstevel@tonic-gate if (c[i]) {
153*0Sstevel@tonic-gate /* Advance to first non-underscore */
154*0Sstevel@tonic-gate while (c[i+2] == '_')
155*0Sstevel@tonic-gate i++;
156*0Sstevel@tonic-gate }
157*0Sstevel@tonic-gate if(strncmp(c+i, MSG_ORIG(MSG_STR_DBLUNDBAR), 2) == 0) {
158*0Sstevel@tonic-gate /* Copy the simple name */
159*0Sstevel@tonic-gate s = napp_String(s,c,i);
160*0Sstevel@tonic-gate /* Process the signature */
161*0Sstevel@tonic-gate c = second(c+i);
162*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
163*0Sstevel@tonic-gate return c;
164*0Sstevel@tonic-gate } else {
165*0Sstevel@tonic-gate c = hold;
166*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
167*0Sstevel@tonic-gate return c;
168*0Sstevel@tonic-gate }
169*0Sstevel@tonic-gate } else {
170*0Sstevel@tonic-gate const char * x;
171*0Sstevel@tonic-gate int oplen;
172*0Sstevel@tonic-gate
173*0Sstevel@tonic-gate c += 2;
174*0Sstevel@tonic-gate
175*0Sstevel@tonic-gate /* For automatic variables, or internal static
176*0Sstevel@tonic-gate * variables, a __(number) is prepended to the
177*0Sstevel@tonic-gate * name. If this is encountered, strip this off
178*0Sstevel@tonic-gate * and return.
179*0Sstevel@tonic-gate */
180*0Sstevel@tonic-gate if(isdigit(*c)) {
181*0Sstevel@tonic-gate while(isdigit(*c))
182*0Sstevel@tonic-gate c++;
183*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
184*0Sstevel@tonic-gate return c;
185*0Sstevel@tonic-gate }
186*0Sstevel@tonic-gate
187*0Sstevel@tonic-gate /* Handle operator functions -- this
188*0Sstevel@tonic-gate * automatically calls second, since
189*0Sstevel@tonic-gate * all operator functions are overloaded.
190*0Sstevel@tonic-gate */
191*0Sstevel@tonic-gate if(x = findop(c, &oplen)) {
192*0Sstevel@tonic-gate s = app_String(s, MSG_ORIG(MSG_STR_OPERATOR_1));
193*0Sstevel@tonic-gate s = app_String(s,x);
194*0Sstevel@tonic-gate c += oplen;
195*0Sstevel@tonic-gate c = second(c);
196*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
197*0Sstevel@tonic-gate return c;
198*0Sstevel@tonic-gate }
199*0Sstevel@tonic-gate
200*0Sstevel@tonic-gate /* Operator cast does not fit the mould
201*0Sstevel@tonic-gate * of the other operators. Its type name
202*0Sstevel@tonic-gate * is encoded. The cast function must
203*0Sstevel@tonic-gate * take a void as an argument.
204*0Sstevel@tonic-gate */
205*0Sstevel@tonic-gate if(strncmp(c, MSG_ORIG(MSG_STR_OP), 2) == 0) {
206*0Sstevel@tonic-gate int r;
207*0Sstevel@tonic-gate s = app_String(s, MSG_ORIG(MSG_STR_OPERATOR_2));
208*0Sstevel@tonic-gate c += 2;
209*0Sstevel@tonic-gate r = demangle_doarg(&s,c);
210*0Sstevel@tonic-gate if(r < 0) {
211*0Sstevel@tonic-gate c = hold;
212*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
213*0Sstevel@tonic-gate return c;
214*0Sstevel@tonic-gate }
215*0Sstevel@tonic-gate c += r;
216*0Sstevel@tonic-gate c = second(c);
217*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
218*0Sstevel@tonic-gate return c;
219*0Sstevel@tonic-gate }
220*0Sstevel@tonic-gate
221*0Sstevel@tonic-gate /* Constructors and Destructors are also
222*0Sstevel@tonic-gate * a special case of operator name. Note
223*0Sstevel@tonic-gate * that the destructor, while overloaded,
224*0Sstevel@tonic-gate * must always take the same arguments --
225*0Sstevel@tonic-gate * none.
226*0Sstevel@tonic-gate */
227*0Sstevel@tonic-gate if ((*c == 'c' || *c == 'd') && strncmp(c+1,
228*0Sstevel@tonic-gate MSG_ORIG(MSG_STR_TDBLUNDBAR), 3) == 0) {
229*0Sstevel@tonic-gate int n;
230*0Sstevel@tonic-gate char *c2 = c+2;
231*0Sstevel@tonic-gate char cx = c[0];
232*0Sstevel@tonic-gate c += 4;
233*0Sstevel@tonic-gate n = getint(&c);
234*0Sstevel@tonic-gate if(n == 0) {
235*0Sstevel@tonic-gate c = hold;
236*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
237*0Sstevel@tonic-gate return c;
238*0Sstevel@tonic-gate }
239*0Sstevel@tonic-gate s = napp_String(s,c,n);
240*0Sstevel@tonic-gate if(cx == 'd')
241*0Sstevel@tonic-gate s = prep_String(MSG_ORIG(MSG_STR_TILDE), s);
242*0Sstevel@tonic-gate c = second(c2);
243*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
244*0Sstevel@tonic-gate return c;
245*0Sstevel@tonic-gate }
246*0Sstevel@tonic-gate c = hold;
247*0Sstevel@tonic-gate (void) mutex_unlock(&mlock);
248*0Sstevel@tonic-gate return c;
249*0Sstevel@tonic-gate }
250*0Sstevel@tonic-gate }
251