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