Add jpt_end symbol for jpt in middle of code

bfd/i386omf.c

@@ -971,6 +971,8 @@ i386omf_read_segdef(bfd *abfd, bfd_byte const *p, bfd_size_type reclen, int is32
         char const *segment_name;
         bfd_vma absolute_addr, seglen;
         bfd_byte attr;
+        int seg_count;
+        char *seg_name;
 
         attr = *p;
 
@@ -1034,6 +1036,7 @@ i386omf_read_segdef(bfd *abfd, bfd_byte const *p, bfd_size_type reclen, int is32
         if (seg->linnums == NULL)
             return false;
 
+        seg_count = strtab_size(tdata->segdef);
         strtab_add(tdata->segdef, seg);
 
         segment_name = i386omf_lookup_string(tdata->lnames,
@@ -1044,13 +1047,14 @@ i386omf_read_segdef(bfd *abfd, bfd_byte const *p, bfd_size_type reclen, int is32
             return false;
         }
 
-        seg->asect = bfd_make_section_anyway(abfd, segment_name);
+        seg_name = bfd_alloc(abfd, strlen(segment_name)+16);
+        sprintf(seg_name, "%s%d", segment_name, seg_count);
+        seg->asect = bfd_make_section_anyway(abfd, seg_name);
         seg_sym = (struct i386omf_symbol *) seg->asect->symbol;
-        seg_sym->name.len = strlen(segment_name);
-        seg_sym->name.data = bfd_alloc(abfd, seg_sym->name.len + 1);
+        seg_sym->name.len = strlen(seg_name);
+        seg_sym->name.data = seg_name;
         if (seg_sym->name.data == NULL)
             return false;
-        strcpy(seg_sym->name.data, segment_name);
         seg_sym->type_index = 0;
         seg_sym->seg = seg;
         seg_sym->group = NULL;
@@ -1838,6 +1842,34 @@ i386omf_teardown_tdata (bfd *abfd)
 #endif
 }
 
+static int
+find_jump_table_size (struct i386omf_relent *relocs, int jpt_offset)
+{
+  struct i386omf_relent *relent;
+  int i;
+  int size = 0;
+
+  /*Assume relocs are ordered by addr*/
+  for (i = 0; (relent = strtab_lookup (relocs, i)) != NULL; i++)
+  {
+    if (relent->base.howto->type == R_I386OMF_WRT_FRAME)
+      continue;
+
+    if (relent->base.address == jpt_offset)
+    {
+      size = 1<<bfd_get_reloc_size (relent->base.howto);
+    }
+    else if(size != 0)
+    {
+      if (relent->base.address == jpt_offset+size)
+        size += 1<<bfd_get_reloc_size (relent->base.howto);
+      else
+        return size;
+    }
+  }
+  return size;
+}
+
 static bool
 add_fake_jump_table_sym (bfd *abfd)
 {
@@ -1852,34 +1884,66 @@ add_fake_jump_table_sym (bfd *abfd)
   {
     for (j = 0; (relent = strtab_lookup (seg->relocs, j)) != NULL; j++)
     {
-      /*OFF16	CODE_SEGMENT_TEXT*/
-      if (relent->base.howto->type == R_I386OMF_OFF16 &&
-          !relent->base.howto->pc_relative &&
-          !strcmp(relent->symbol->name, seg->asect->name))
-      {
-        pp = &seg->asect->contents[relent->base.address];
+      if (relent->base.howto->type != R_I386OMF_OFF16 && relent->base.howto->type != R_I386OMF_OFF32)
+        continue;
+
+      if (relent->base.howto->pc_relative || strcmp(relent->symbol->name, seg->asect->name))
+        continue;
+
+      pp = &seg->asect->contents[relent->base.address];
 
-        /*jmp *%cs:offset(%reg)*/
-        if(bfd_get_8(abfd, pp-3) != 0x2E) /*cs prefix*/
-          continue;
-        if(bfd_get_8(abfd, pp-2) != 0xFF) /*jmp*/
-          continue;
+      /*jmp *%cs:offset(%reg)*/
+      if(bfd_get_8(abfd, pp-3) != 0x2E) /*cs prefix*/
+        continue;
+      if(bfd_get_8(abfd, pp-2) != 0xFF) /*jmp*/
+        continue;
+
+      pubdef = (struct i386omf_symbol *) bfd_make_empty_symbol (abfd);
+      pubdef->base.name = bfd_alloc (abfd, 32);
+      if (pubdef->base.name == NULL)
+        continue;
 
+      if (relent->base.howto->type == R_I386OMF_OFF16)
+      {
         offset = bfd_get_16(abfd, pp);
-        pubdef = (struct i386omf_symbol *) bfd_make_empty_symbol (abfd);
-
-        pubdef->base.name = bfd_alloc (abfd, 16);
-        if (pubdef->base.name == NULL)
-          break;
-
-        sprintf(pubdef->base.name, "jpt_%.4X", offset);
-        pubdef->base.flags |= BSF_OBJECT;
-        pubdef->base.value = offset;
-        pubdef->seg = seg;
-        pubdef->base.section = pubdef->seg->asect;
-        pubdef->group = NULL; /*TODO?*/
-        strtab_add (seg->pubdef, pubdef);
+        sprintf(pubdef->base.name, "jpt_%.4X_start", offset);
+      }
+      else
+      {
+        offset = bfd_get_32(abfd, pp);
+        sprintf(pubdef->base.name, "jpt_%.8X_start", offset);
       }
+
+      pubdef->name.data = pubdef->base.name;
+      pubdef->name.len = strlen(pubdef->base.name);
+      pubdef->base.flags |= BSF_OBJECT;
+      pubdef->base.value = offset;
+      pubdef->seg = seg;
+      pubdef->base.section = pubdef->seg->asect;
+      pubdef->group = NULL; /*TODO?*/
+      strtab_add (seg->pubdef, pubdef);
+
+      offset = find_jump_table_size(seg->relocs, offset);
+      offset += pubdef->base.value;
+
+      pubdef = (struct i386omf_symbol *) bfd_make_empty_symbol (abfd);
+      pubdef->base.name = bfd_alloc (abfd, 32);
+      if (pubdef->base.name == NULL)
+        continue;
+
+      if (relent->base.howto->type == R_I386OMF_OFF16)
+        sprintf(pubdef->base.name, "jpt_%.4X_end", offset);
+      else
+        sprintf(pubdef->base.name, "jpt_%.8X_end", offset);
+
+      pubdef->name.data = pubdef->base.name;
+      pubdef->name.len = strlen(pubdef->base.name);
+      pubdef->base.flags |= BSF_FUNCTION;
+      pubdef->base.value = offset;
+      pubdef->seg = seg;
+      pubdef->base.section = pubdef->seg->asect;
+      pubdef->group = NULL; /*TODO?*/
+      strtab_add (seg->pubdef, pubdef);
     }
   }
 }

binutils/objdump.c

@@ -3991,6 +3991,7 @@ disassemble_section (bfd *abfd, asection *section, void *inf)
 #define is_valid_next_sym(SYM) \
   (strcmp (bfd_section_name ((SYM)->section), bfd_section_name (section)) == 0 \
    && (bfd_asymbol_value (SYM) > bfd_asymbol_value (sym)) \
+   /*&& (sym_ok (true, abfd, place, section, inf))*/ \
    && pinfo->symbol_is_valid (SYM, pinfo))
 
 	  /* Search forward for the next appropriate symbol in