mono/mini/helpers.c

   1 /*
   2  * helpers.c: Assorted routines
   3  *
   4  * (C) 2003 Ximian, Inc.
   5  */
   6 #include "mini.h"
   7 #include <ctype.h>
   8 #include <mono/metadata/opcodes.h>
   9
  10 #ifndef PLATFORM_WIN32
  11 #include <unistd.h>
  12 #endif
  13
  14 #ifdef MINI_OP
  15 #undef MINI_OP
  16 #endif
  17
  18 #ifdef HAVE_ARRAY_ELEM_INIT
  19 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
  20 #define MSGSTRFIELD1(line) str##line
  21 static const struct msgstr_t {
  22 #define MINI_OP(a,b,dest,src1,src2) char MSGSTRFIELD(__LINE__) [sizeof (b)];
  23 #include "mini-ops.h"
  24 #undef MINI_OP
  25 } opstr = {
  26 #define MINI_OP(a,b,dest,src1,src2) b,
  27 #include "mini-ops.h"
  28 #undef MINI_OP
  29 };
  30 static const gint16 opidx [] = {
  31 #define MINI_OP(a,b,dest,src1,src2) [a - OP_LOAD] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
  32 #include "mini-ops.h"
  33 #undef MINI_OP
  34 };
  35
  36 #else
  37
  38 #define MINI_OP(a,b,dest,src1,src2) b,
  39 /* keep in sync with the enum in mini.h */
  40 static const char* const
  41 opnames[] = {
  42 #include "mini-ops.h"
  43 };
  44 #undef MINI_OP
  45
  46 #endif
  47
  48 #if defined(__i386__) || defined(__x86_64__)
  49 #define emit_debug_info  TRUE
  50 #else
  51 #define emit_debug_info  FALSE
  52 #endif
  53
  54 const char*
  55 mono_inst_name (int op) {
  56         if (op >= OP_LOAD && op <= OP_LAST)
  57 #ifdef HAVE_ARRAY_ELEM_INIT
  58                 return (const char*)&opstr + opidx [op - OP_LOAD];
  59 #else
  60                 return opnames [op - OP_LOAD];
  61 #endif
  62         if (op < OP_LOAD)
  63                 return mono_opcode_name (op);
  64         g_error ("unknown opcode name for %d", op);
  65         return NULL;
  66 }
  67
  68 void
  69 mono_blockset_print (MonoCompile *cfg, MonoBitSet *set, const char *name, guint idom)
  70 {
  71 #ifndef DISABLE_LOGGING
  72         int i;
  73
  74         if (name)
  75                 g_print ("%s:", name);
  76
  77         mono_bitset_foreach_bit (set, i, cfg->num_bblocks) {
  78                 if (idom == i)
  79                         g_print (" [BB%d]", cfg->bblocks [i]->block_num);
  80                 else
  81                         g_print (" BB%d", cfg->bblocks [i]->block_num);
  82
  83         }
  84         g_print ("\n");
  85 #endif
  86 }
  87
  88 /**
  89  * mono_disassemble_code:
  90  * @cfg: compilation context
  91  * @code: a pointer to the code
  92  * @size: the code size in bytes
  93  *
  94  * Disassemble to code to stdout.
  95  */
  96 void
  97 mono_disassemble_code (MonoCompile *cfg, guint8 *code, int size, char *id)
  98 {
  99 #ifndef DISABLE_LOGGING
 100         GHashTable *offset_to_bb_hash = NULL;
 101         int i, cindex, bb_num;
 102         FILE *ofd;
 103 #ifdef PLATFORM_WIN32
 104         const char *tmp = g_get_tmp_dir ();
 105 #endif
 106         const char *objdump_args = g_getenv ("MONO_OBJDUMP_ARGS");
 107         char *as_file;
 108         char *o_file;
 109         char *cmd;
 110
 111 #ifdef PLATFORM_WIN32
 112         as_file = g_strdup_printf ("%s/test.s", tmp);
 113
 114         if (!(ofd = fopen (as_file, "w")))
 115                 g_assert_not_reached ();
 116 #else
 117         i = g_file_open_tmp (NULL, &as_file, NULL);
 118         ofd = fdopen (i, "w");
 119         g_assert (ofd);
 120 #endif
 121
 122         for (i = 0; id [i]; ++i) {
 123                 if (i == 0 && isdigit (id [i]))
 124                         fprintf (ofd, "_");
 125                 else if (!isalnum (id [i]))
 126                         fprintf (ofd, "_");
 127                 else
 128                         fprintf (ofd, "%c", id [i]);
 129         }
 130         fprintf (ofd, ":\n");
 131
 132         if (emit_debug_info && cfg != NULL) {
 133                 MonoBasicBlock *bb;
 134
 135                 fprintf (ofd, ".stabs   \"\",100,0,0,.Ltext0\n");
 136                 fprintf (ofd, ".stabs   \"<BB>\",100,0,0,.Ltext0\n");
 137                 fprintf (ofd, ".Ltext0:\n");
 138
 139                 offset_to_bb_hash = g_hash_table_new (NULL, NULL);
 140                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
 141                         g_hash_table_insert (offset_to_bb_hash, GINT_TO_POINTER (bb->native_offset), GINT_TO_POINTER (bb->block_num + 1));
 142                 }
 143         }
 144
 145         cindex = 0;
 146         for (i = 0; i < size; ++i) {
 147                 if (emit_debug_info) {
 148                         bb_num = GPOINTER_TO_INT (g_hash_table_lookup (offset_to_bb_hash, GINT_TO_POINTER (i)));
 149                         if (bb_num) {
 150                                 fprintf (ofd, "\n.stabd 68,0,%d\n", bb_num - 1);
 151                                 cindex = 0;
 152                         }
 153                 }
 154                 if (cindex == 0) {
 155                         fprintf (ofd, "\n.byte %d", (unsigned int) code [i]);
 156                 } else {
 157                         fprintf (ofd, ",%d", (unsigned int) code [i]);
 158                 }
 159                 cindex++;
 160                 if (cindex == 64)
 161                         cindex = 0;
 162         }
 163         fprintf (ofd, "\n");
 164         fclose (ofd);
 165
 166 #ifdef __APPLE__
 167 #ifdef __ppc64__
 168 #define DIS_CMD "otool64 -v -t"
 169 #else
 170 #define DIS_CMD "otool -v -t"
 171 #endif
 172 #else
 173 #if defined(sparc) && !defined(__GNUC__)
 174 #define DIS_CMD "dis"
 175 #elif defined(__i386__) || defined(__x86_64__)
 176 #define DIS_CMD "objdump -l -d"
 177 #else
 178 #define DIS_CMD "objdump -d"
 179 #endif
 180 #endif
 181
 182 #if defined(sparc)
 183 #define AS_CMD "as -xarch=v9"
 184 #elif defined(__i386__) || defined(__x86_64__)
 185 #  if defined(__APPLE__)
 186 #    define AS_CMD "as"
 187 #  else
 188 #    define AS_CMD "as -gstabs"
 189 #endif
 190 #elif defined(__mips__) && (_MIPS_SIM == _ABIO32)
 191 #define AS_CMD "as -mips32"
 192 #elif defined(__ppc64__)
 193 #define AS_CMD "as -arch ppc64"
 194 #elif defined(__powerpc64__)
 195 #define AS_CMD "as -mppc64"
 196 #else
 197 #define AS_CMD "as"
 198 #endif
 199
 200 #ifdef PLATFORM_WIN32
 201         o_file = g_strdup_printf ("%s/test.o", tmp);
 202 #else
 203         i = g_file_open_tmp (NULL, &o_file, NULL);
 204         close (i);
 205 #endif
 206
 207         cmd = g_strdup_printf (AS_CMD " %s -o %s", as_file, o_file);
 208         system (cmd);
 209         g_free (cmd);
 210         if (!objdump_args)
 211                 objdump_args = "";
 212
 213 #ifdef __arm__
 214         /*
 215          * The arm assembler inserts ELF directives instructing objdump to display
 216          * everything as data.
 217          */
 218         cmd = g_strdup_printf ("strip -x %s", o_file);
 219         system (cmd);
 220         g_free (cmd);
 221 #endif
 222
 223         cmd = g_strdup_printf (DIS_CMD " %s %s", objdump_args, o_file);
 224         system (cmd);
 225         g_free (cmd);
 226
 227 #ifndef PLATFORM_WIN32
 228         unlink (o_file);
 229         unlink (as_file);
 230 #endif
 231         g_free (o_file);
 232         g_free (as_file);
 233 #endif
 234 }
 235