Some common SPARC assembly errors - and what they will look like

  missing symbol

        /var/tmp/ccdWtiwt.o: In function `main':
        /var/tmp/ccdWtiwt.o(.text+0x10): undefined reference to `loop'
        collect2: ld returned 1 exit status

  multiply-defined symbol (note the line number in the second message)

        test.s: Assembler messages:
        test.s:15: Fatal error: Symbol loop already defined.

  forgot to use % to mark registers (note the line number)

        test.s: Assembler messages:
        test.s:12: Error: Illegal operands

  forgot to run m4

        test.s: Assembler messages:
        test.s:2: Fatal error: Unknown opcode: `define(ptr_r,l0)'

  didn't use quotes when redefining a register name macro (e.g., in the
     main routine of your program you use define(ptr_r,l0), then in a
     subroutine you use define(ptr_r,o0); but, since the second define
     doesn't use ptr_r in quotes, that symbol remains defined as l0.)

        <no error message during macro processing or assembly --
        results in a logic error during execution>


later in the semester, you might encounter these...

  used "mov x,%o0" instead of the proper "set x,%o0"

        /var/tmp/ccs3HM3o.o: In function `main':
        /var/tmp/ccs3HM3o.o(.text+0x4): relocation truncated to fit:
                R_SPARC_13 data
        collect2: ld returned 1 exit status

  forgot to use .section ".data" directive and then you store to data
     that is assembled into the default ".text" section

        <no error message during macro processing or assembly>

        Segmentation fault (core dumped)

  load/store to unaligned operand 

        <no error message during macro processing or assembly>

        Bus error (core dumped)