General Purpose Register cross reference

This section of the listing shows all references in the program to each of the general registers. Additional flags indicate the type of reference. This is a useful tool in checking the logic of your program; it helps you see if your use of registers is in order.

Figure 1. General Purpose Register cross reference

                                        General Purpose Register Cross Reference                   Page    8
Register  References (M=modified, B=branch, U=USING, D=DROP, N=index)           HLASM R6.0  2008/07/11 17.48
    1       2 
    0(0)  115
    1(1)  118  120  121  122  124  126  127  128  130  131  133  135  136  137
    2(2)   36   37   38   39   40   41   42   43   44M  45   46   47   48   49   50   51
           52M  53   54   55M  56   57   58   59M  60   61   62   63   64   65   66   67
           68   69   70   71   72M  73   74   75   76   77   78   79   80   81   82   83
           84   85   86   87   88   89M  90   91   92   93M  94   95   96   97   98   99
          100  101  102  103  104  105  106  107  108  109  110  111  112
    3(3)  (no references identified)    3 
    4(4)   16M 281
    5(5)  283
    6(6)   66N 167N 170  171  174  178  180N 190  192  193  194  197  199  200  201N
    7(7)  283
    8(8)  283
    9(9)  224  225  226  227
   10(A)  255U 342D
   11(B)  237  238  239N 240  241  242  243N 244  245N 271
   12(C)    8U
   13(D)  261  262  263  264  265  266
   14(E)  209  210  211  212  213  214  215  216
   15(F)   34  144

1

Lists the 16 general registers (0–15).

2

The statements within the program that reference the register. Additional indicators are suffixed to the statement numbers as follows:

(space): Referenced
M: Modified
B: Used as a branch address
U: Used in USING statement
D: Used in DROP statement
N: Used as an index register

3

The assembler indicates when it has not detected any references to a register.

Note: The implicit use of a register to resolve a symbol to a base and displacement does not create a reference in the General Purpose Register Cross Reference.