HP 3000 Manuals HP 3000 Manuals
STATEMENT_NUMBER
STATEMENT_NUMBER is an HP Pascal Option.
When the STATEMENT_NUMBER compiler option is ON, the compiler generates a
special instruction to identify a code sequence with its corresponding
Pascal statement.
Syntax
$STATEMENT_NUMBER {ON }$
{OFF}
Default OFF
Location Anywhere.
The special instruction that the compiler generates is a LoaD Immediate
Left (LDIL) instruction with destination register R0. It is equivalent
to a No OPeration (NOP) instruction. The immediate field contains the
statement number. When the debugger displays the mnemonic for the
instruction, it shows the statement number instead of the LDIL
instruction.
NOTE The STATEMENT_NUMBER compiler option is ignored when optimization
is in effect.
Example
$STATEMENT_NUMBER ON$
$LIST_CODE ON$
PROGRAM a (output);
BEGIN
writeln('Hi, mom!');
END.
The listing for the preceding program is:
0 1.000 0 $statement_number on$
0 2.000 0 $list_code on$
0 3.000 0 program x;
0 4.000 0 var
0 5.000 0 i,j,k : integer;
3 6.000 1 begin
3 7.000 1 i := 0;
4 8.000 1 j := i;
5 9.000 1 k := j + i;
6 10.000 1 end.
PROGRAM
0 STW 2,_20(0,30) 34 LDW 12(0,27),31
4 LDO 48(30),30 38 LDW 16(0,27),19
8 STW 0,-4(0,30) 3C ADDO 31,19,20
C BL P_INIT_ARGS,2 40 STW 20,8(0,27)
10 NOP 00002711
14 BL U_INIT_TRAPS,2 44 BL P_TERMINATE,2
18 NOP 48 NOP
1C *** Stmt 3 4C NOP
20 STW 0,16(0,27) 50 BL U_EXIT,2
24 *** Stmt 4 54 NOP
28 LDW 16(0,27),1 58 LDW -68(O,30),2
2C STW 1,12 (0,27) 5C BV 0(2)
30 *** Stmt 5 60 LDO -48(30),30