2 * dis-cil.c: Disassembles CIL byte codes
5 * Miguel de Icaza (miguel@ximian.com)
7 * (C) 2001 Ximian, Inc.
20 #include "mono/metadata/opcodes.h"
21 #include "mono/metadata/class-internals.h"
22 #include "mono/utils/mono-compiler.h"
34 klass = fpclass (num);
44 #error "Don't know how to implement isinf for this platform."
49 #define CODE_INDENT g_assert (indent_level < 512); \
50 indent[indent_level*2] = ' '; \
51 indent[indent_level*2+1] = ' '; \
53 indent[indent_level*2] = 0;
54 #define CODE_UNINDENT g_assert (indent_level); \
56 indent[indent_level*2] = 0;
59 disassemble_cil (MonoImage *m, MonoMethodHeader *mh, MonoGenericContainer *container)
61 const unsigned char *start = mh->code;
62 int size = mh->code_size;
63 const unsigned char *end = start + size;
64 const unsigned char *ptr = start;
65 const MonoOpcode *entry;
67 int i, j, indent_level = 0;
68 gboolean in_fault = 0;
69 const char *clause_names[] = {"catch", "filter", "finally", "", "fault"};
70 gboolean *trys = NULL;
74 for (i = 0; i < mh->num_clauses; ++i) {
75 #define clause mh->clauses [i]
76 g_print ("/* out clause %d: from %d len=%d, handler at %d, %d */\n",
77 clause.flags, clause.try_offset, clause.try_len, clause.handler_offset, clause.handler_len);
82 if (mh->num_clauses) {
83 trys = g_malloc0 (sizeof (gboolean) * mh->num_clauses);
85 for (i=1; i < mh->num_clauses; ++i) {
86 #define jcl mh->clauses [j]
87 #define cl mh->clauses [i]
89 for (j = 0; j < i; j++) {
90 if (cl.try_offset == jcl.try_offset && cl.try_len == jcl.try_len) {
101 for (i = mh->num_clauses - 1; i >= 0 ; --i) {
102 if (ptr == start + mh->clauses[i].try_offset && trys [i]) {
103 fprintf (output, "\t%s.try { // %d\n", indent, i);
107 if (ptr == start + mh->clauses[i].handler_offset) {
108 if (mh->clauses[i].flags == MONO_EXCEPTION_CLAUSE_FILTER) {
110 fprintf (output, "\t%s} { // %d\n", indent, i);
112 char * klass = mh->clauses[i].flags ? g_strdup ("") :
113 dis_stringify_object_with_class (m, mh->clauses[i].data.catch_class,
115 fprintf (output, "\t%s%s %s { // %d\n", indent,
116 clause_names [mh->clauses[i].flags], klass, i);
120 if (mh->clauses[i].flags == MONO_EXCEPTION_CLAUSE_FAULT)
123 if (mh->clauses[i].flags == MONO_EXCEPTION_CLAUSE_FILTER && ptr == start + mh->clauses[i].data.filter_offset) {
124 fprintf (output, "\t%s%s {\n", indent, clause_names[1]);
128 fprintf (output, "\t%sIL_%04x: ", indent, (int) (ptr - start));
134 entry = &mono_opcodes [i];
136 if (in_fault && entry->opval == 0xDC)
137 fprintf (output, " %s", "endfault");
139 fprintf (output, " %s ", mono_opcode_name (i));
141 switch (entry->argument){
142 case MonoInlineBrTarget: {
143 gint target = read32 (ptr);
144 fprintf (output, "IL_%04x\n", ((int) (ptr - start)) + 4 + target);
149 case MonoInlineField: {
150 guint32 token = read32 (ptr);
153 s = get_field (m, token, container);
154 fprintf (output, "%s", s);
161 int value = read32 (ptr);
163 fprintf (output, "%d", value);
169 gint64 top = read64 (ptr);
171 fprintf (output, "0x%llx", (long long) top);
176 case MonoInlineMethod: {
177 guint32 token = read32 (ptr);
180 s = get_method (m, token, container);
181 fprintf (output, "%s", s);
196 fprintf (output, "(00 00 00 00 00 00 f0 ff)"); /* negative infinity */
198 fprintf (output, "(00 00 00 00 00 00 f0 7f)"); /* positive infinity */
200 fprintf (output, "(00 00 00 00 00 00 f8 ff)"); /* NaN */
202 char *str = stringify_double (r);
203 fprintf (output, "%s", str);
210 case MonoInlineSig: {
211 guint32 token = read32 (ptr);
212 fprintf (output, "signature-0x%08x", token);
217 case MonoInlineString: {
218 guint32 token = read32 (ptr);
219 const char *us_ptr = mono_metadata_user_string (m, token & 0xffffff);
220 int len = mono_metadata_decode_blob_size (us_ptr, (const char**)&us_ptr);
222 char *s = get_encoded_user_string_or_bytearray ((const guchar*)us_ptr, len);
225 * See section 23.1.4 on the encoding of the #US heap
227 fprintf (output, "%s", s);
233 case MonoInlineSwitch: {
234 guint32 count = read32 (ptr);
235 const unsigned char *endswitch;
239 endswitch = ptr + sizeof (guint32) * count;
240 fprintf (output, count > 0 ? "(\n" : "( )");
242 for (n = 0; n < count; n++){
243 fprintf (output, "\t%sIL_%04x%s", indent,
244 (int)(endswitch-start+read32 (ptr)),
245 n == count - 1 ? ")" : ",\n");
252 case MonoInlineTok: {
253 guint32 token = read32 (ptr);
256 s = get_token (m, token, container);
257 fprintf (output, "%s", s);
264 case MonoInlineType: {
265 guint32 token = read32 (ptr);
266 char *s = get_token_type (m, token, container);
267 fprintf (output, "%s", s);
273 case MonoInlineVar: {
274 guint16 var_idx = read16 (ptr);
276 fprintf (output, "%d\n", var_idx);
281 case MonoShortInlineBrTarget: {
282 signed char x = *ptr;
284 fprintf (output, "IL_%04x\n", (int)(ptr - start + 1 + x));
289 case MonoShortInlineI: {
292 fprintf (output, "0x%02x", x);
297 case MonoShortInlineR: {
305 fprintf (output, "(00 00 80 ff)"); /* negative infinity */
307 fprintf (output, "(00 00 80 7f)"); /* positive infinity */
309 fprintf (output, "(00 00 c0 ff)"); /* NaN */
311 char *str = stringify_double ((double) f);
312 fprintf (output, "%s", str);
319 case MonoShortInlineVar: {
320 unsigned char x = *ptr;
322 fprintf (output, "%d", (int) x);
330 fprintf (output, "\n");
331 for (i = 0; i < mh->num_clauses; ++i) {
332 if (ptr == start + mh->clauses[i].try_offset + mh->clauses[i].try_len && trys [i]) {
334 fprintf (output, "\t%s} // end .try %d\n", indent, i);
336 if (ptr == start + mh->clauses[i].handler_offset + mh->clauses[i].handler_len) {
338 fprintf (output, "\t%s} // end handler %d\n", indent, i);
339 if (mh->clauses[i].flags == MONO_EXCEPTION_CLAUSE_FAULT)