Debugging 64-bit Applications

All of the Solaris debugging tools have been updated to work with 64-bit applications. This includes the truss(1) command, the /proc tools (proc(1)) and mdb.

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