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 HOST_WIN32
  11 #include <unistd.h>
  12 #endif
  13
  14 #ifndef DISABLE_LOGGING
  15
  16 #ifdef MINI_OP
  17 #undef MINI_OP
  18 #endif
  19 #ifdef MINI_OP3
  20 #undef MINI_OP3
  21 #endif
  22
  23 #ifdef HAVE_ARRAY_ELEM_INIT
  24 #define MSGSTRFIELD(line) MSGSTRFIELD1(line)
  25 #define MSGSTRFIELD1(line) str##line
  26 static const struct msgstr_t {
  27 #define MINI_OP(a,b,dest,src1,src2) char MSGSTRFIELD(__LINE__) [sizeof (b)];
  28 #define MINI_OP3(a,b,dest,src1,src2,src3) char MSGSTRFIELD(__LINE__) [sizeof (b)];
  29 #include "mini-ops.h"
  30 #undef MINI_OP
  31 #undef MINI_OP3
  32 } opstr = {
  33 #define MINI_OP(a,b,dest,src1,src2) b,
  34 #define MINI_OP3(a,b,dest,src1,src2,src3) b,
  35 #include "mini-ops.h"
  36 #undef MINI_OP
  37 #undef MINI_OP3
  38 };
  39 static const gint16 opidx [] = {
  40 #define MINI_OP(a,b,dest,src1,src2) [a - OP_LOAD] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
  41 #define MINI_OP3(a,b,dest,src1,src2,src3) [a - OP_LOAD] = offsetof (struct msgstr_t, MSGSTRFIELD(__LINE__)),
  42 #include "mini-ops.h"
  43 #undef MINI_OP
  44 #undef MINI_OP3
  45 };
  46
  47 #else
  48
  49 #define MINI_OP(a,b,dest,src1,src2) b,
  50 #define MINI_OP3(a,b,dest,src1,src2,src3) b,
  51 /* keep in sync with the enum in mini.h */
  52 static const char* const
  53 opnames[] = {
  54 #include "mini-ops.h"
  55 };
  56 #undef MINI_OP
  57 #undef MINI_OP3
  58
  59 #endif
  60
  61 #endif /* DISABLE_LOGGING */
  62
  63 #if defined(__i386__) || defined(__x86_64__)
  64 #define emit_debug_info  TRUE
  65 #else
  66 #define emit_debug_info  FALSE
  67 #endif
  68
  69 #define ARCH_PREFIX ""
  70 //#define ARCH_PREFIX "powerpc64-linux-gnu-"
  71
  72 const char*
  73 mono_inst_name (int op) {
  74 #ifndef DISABLE_LOGGING
  75         if (op >= OP_LOAD && op <= OP_LAST)
  76 #ifdef HAVE_ARRAY_ELEM_INIT
  77                 return (const char*)&opstr + opidx [op - OP_LOAD];
  78 #else
  79                 return opnames [op - OP_LOAD];
  80 #endif
  81         if (op < OP_LOAD)
  82                 return mono_opcode_name (op);
  83         g_error ("unknown opcode name for %d", op);
  84         return NULL;
  85 #else
  86         g_assert_not_reached ();
  87 #endif
  88 }
  89
  90 void
  91 mono_blockset_print (MonoCompile *cfg, MonoBitSet *set, const char *name, guint idom)
  92 {
  93 #ifndef DISABLE_LOGGING
  94         int i;
  95
  96         if (name)
  97                 g_print ("%s:", name);
  98
  99         mono_bitset_foreach_bit (set, i, cfg->num_bblocks) {
 100                 if (idom == i)
 101                         g_print (" [BB%d]", cfg->bblocks [i]->block_num);
 102                 else
 103                         g_print (" BB%d", cfg->bblocks [i]->block_num);
 104
 105         }
 106         g_print ("\n");
 107 #endif
 108 }
 109
 110 /**
 111  * mono_disassemble_code:
 112  * @cfg: compilation context
 113  * @code: a pointer to the code
 114  * @size: the code size in bytes
 115  *
 116  * Disassemble to code to stdout.
 117  */
 118 void
 119 mono_disassemble_code (MonoCompile *cfg, guint8 *code, int size, char *id)
 120 {
 121 #ifndef DISABLE_LOGGING
 122         GHashTable *offset_to_bb_hash = NULL;
 123         int i, cindex, bb_num;
 124         FILE *ofd;
 125 #ifdef HOST_WIN32
 126         const char *tmp = g_get_tmp_dir ();
 127 #endif
 128         const char *objdump_args = g_getenv ("MONO_OBJDUMP_ARGS");
 129         char *as_file;
 130         char *o_file;
 131         char *cmd;
 132
 133 #ifdef HOST_WIN32
 134         as_file = g_strdup_printf ("%s/test.s", tmp);
 135
 136         if (!(ofd = fopen (as_file, "w")))
 137                 g_assert_not_reached ();
 138 #else
 139         i = g_file_open_tmp (NULL, &as_file, NULL);
 140         ofd = fdopen (i, "w");
 141         g_assert (ofd);
 142 #endif
 143
 144         for (i = 0; id [i]; ++i) {
 145                 if (i == 0 && isdigit (id [i]))
 146                         fprintf (ofd, "_");
 147                 else if (!isalnum (id [i]))
 148                         fprintf (ofd, "_");
 149                 else
 150                         fprintf (ofd, "%c", id [i]);
 151         }
 152         fprintf (ofd, ":\n");
 153
 154         if (emit_debug_info && cfg != NULL) {
 155                 MonoBasicBlock *bb;
 156
 157                 fprintf (ofd, ".stabs   \"\",100,0,0,.Ltext0\n");
 158                 fprintf (ofd, ".stabs   \"<BB>\",100,0,0,.Ltext0\n");
 159                 fprintf (ofd, ".Ltext0:\n");
 160
 161                 offset_to_bb_hash = g_hash_table_new (NULL, NULL);
 162                 for (bb = cfg->bb_entry; bb; bb = bb->next_bb) {
 163                         g_hash_table_insert (offset_to_bb_hash, GINT_TO_POINTER (bb->native_offset), GINT_TO_POINTER (bb->block_num + 1));
 164                 }
 165         }
 166
 167         cindex = 0;
 168         for (i = 0; i < size; ++i) {
 169                 if (emit_debug_info && cfg != NULL) {
 170                         bb_num = GPOINTER_TO_INT (g_hash_table_lookup (offset_to_bb_hash, GINT_TO_POINTER (i)));
 171                         if (bb_num) {
 172                                 fprintf (ofd, "\n.stabd 68,0,%d\n", bb_num - 1);
 173                                 cindex = 0;
 174                         }
 175                 }
 176                 if (cindex == 0) {
 177                         fprintf (ofd, "\n.byte %d", (unsigned int) code [i]);
 178                 } else {
 179                         fprintf (ofd, ",%d", (unsigned int) code [i]);
 180                 }
 181                 cindex++;
 182                 if (cindex == 64)
 183                         cindex = 0;
 184         }
 185         fprintf (ofd, "\n");
 186         fclose (ofd);
 187
 188 #ifdef __APPLE__
 189 #ifdef __ppc64__
 190 #define DIS_CMD "otool64 -v -t"
 191 #else
 192 #define DIS_CMD "otool -v -t"
 193 #endif
 194 #else
 195 #if defined(sparc) && !defined(__GNUC__)
 196 #define DIS_CMD "dis"
 197 #elif defined(__i386__) || defined(__x86_64__)
 198 #define DIS_CMD "objdump -l -d"
 199 #else
 200 #define DIS_CMD "objdump -d"
 201 #endif
 202 #endif
 203
 204 #if defined(sparc)
 205 #define AS_CMD "as -xarch=v9"
 206 #elif defined(__i386__) || defined(__x86_64__)
 207 #  if defined(__APPLE__)
 208 #    define AS_CMD "as"
 209 #  else
 210 #    define AS_CMD "as -gstabs"
 211 #endif
 212 #elif defined(__mips__) && (_MIPS_SIM == _ABIO32)
 213 #define AS_CMD "as -mips32"
 214 #elif defined(__ppc64__)
 215 #define AS_CMD "as -arch ppc64"
 216 #elif defined(__powerpc64__)
 217 #define AS_CMD "as -mppc64"
 218 #else
 219 #define AS_CMD "as"
 220 #endif
 221
 222 #ifdef HOST_WIN32
 223         o_file = g_strdup_printf ("%s/test.o", tmp);
 224 #else
 225         i = g_file_open_tmp (NULL, &o_file, NULL);
 226         close (i);
 227 #endif
 228
 229         cmd = g_strdup_printf (ARCH_PREFIX AS_CMD " %s -o %s", as_file, o_file);
 230         system (cmd);
 231         g_free (cmd);
 232         if (!objdump_args)
 233                 objdump_args = "";
 234
 235 #ifdef __arm__
 236         /*
 237          * The arm assembler inserts ELF directives instructing objdump to display
 238          * everything as data.
 239          */
 240         cmd = g_strdup_printf (ARCH_PREFIX "strip -x %s", o_file);
 241         system (cmd);
 242         g_free (cmd);
 243 #endif
 244
 245         cmd = g_strdup_printf (ARCH_PREFIX DIS_CMD " %s %s", objdump_args, o_file);
 246         system (cmd);
 247         g_free (cmd);
 248
 249 #ifndef HOST_WIN32
 250         unlink (o_file);
 251         unlink (as_file);
 252 #endif
 253         g_free (o_file);
 254         g_free (as_file);
 255 #endif
 256 }
 257