It would, of course, help matters if you mentioned what CPU you are targeting. 
For CodeWarrior for PPCs, go the the project's settings panel (type Alt-F7 to get there), then select the EPPC Disassembler settings panel. Check the Show Source Code option. Now when you disassemble a source file, you'll get a dump that contains the source code lines mixed with the assembly instructions generated for each source line. You can check some of the other options (such as Show Headers and Show Symbol Tables) to get even more information with the disassembly dump.
For CodeWarrior for ColdFire, go to the project's settings panel (type Alt-F7 as before) and select the ELF disassembler panel. Check the Show Source Code option, plus any others in that group to add as much detail as you need to the disassembly dump.
---Tom