The dbx debugger, capable of debugging 64-bit applications, is available as part of the Sun Studio tool suites. The remaining tools are included with the Solaris release.
The options for all these tools are unchanged. A number of enhancements are available in mdb for debugging 64-bit programs. As expected, using “*” to dereference a pointer will dereference 8 bytes for 64-bit programs and 4 bytes for 32-bit programs. In addition, the following modifiers are available:
Additional ?, /, = modifiers: g (8) Display 8 bytes in unsigned octal G (8) Display 8 bytes in signed octal e (8) Display 8 bytes in signed decimal E (8) Display 8 bytes in unsigned decimal J (8) Display 8 bytes in hexadecimal K (n) Print pointer or long in hexadecimal Display 4 bytes for 32-bit programs and 8 bytes for 64-bit programs. y (8) Print 8 bytes in date format Additional ? and / modifiers: M <value> <mask> Apply <mask> and compare for 8-byte value; move '.' to matching location. Z (8) write 8 bytes