Assembly Language for Beginners

9.5. ORACLE RDBMS: .SYM-FILES

// additional offset

assert (sscanf (argv[2], "%X", &offset)==1);

// get file length

assert ((h=open (argv[1], _O_RDONLY | _O_BINARY, 0))!=-1);

assert ((file_len=lseek (h, 0, SEEK_END))!=-1);

assert (lseek (h, 0, SEEK_SET)!=-1);

// read signature

assert (read (h, &sig, 4)==4);

// read count

assert (read (h, &cnt, 4)==4);

assert (sig==0x4D59534F); // OSYM

// skip timedatestamp (for 11g)

//_lseek (h, 4, 1);

array_size_in_bytes=cnt*sizeof(uint32_t);

// load symbol addresses array

d1=(uint32_t*)malloc (array_size_in_bytes);

assert (d1);

assert (read (h, d1, array_size_in_bytes)==array_size_in_bytes);

// load string offsets array

d2=(uint32_t*)malloc (array_size_in_bytes);

assert (d2);

assert (read (h, d2, array_size_in_bytes)==array_size_in_bytes);

// calculate strings block size

remain=file_len-(8+4)-(cnt*8);

// load strings block

assert (d3=(char*)malloc (remain));

assert (read (h, d3, remain)==remain);

printf ("#include <idc.idc>\n\n");

printf ("static main() {\n");

for (i=0; i<cnt; i++)

printf ("\tMakeName(0x%08X, \"%s\");\n", offset + d1[i], &d3[d2[i]]);

printf ("}\n");

close (h);
free (d1); free (d2); free (d3);
};

Here is an example of its work:

#include <idc.idc>

static main() {
MakeName(0x60351000, "_ax_reg");
MakeName(0x60351080, "_ax_unreg");
MakeName(0x603510F0, "_loaddll");
MakeName(0x60351150, "_wtcsrin0");
MakeName(0x60351160, "_wtcsrin");
MakeName(0x603511C0, "_wtcsrfre");
MakeName(0x603511D0, "_wtclkm");
MakeName(0x60351370, "_wtcstu");
...
}

The example files were used in this example are here:beginners.re.