I like to code in assembler as well-structured, even though that's not the maximum possible efficiency. For example, I'll break up the program into subroutines even when the subroutine is only executed from one place.
In COBOL this actually is optimal, since the optimizer will inline the instructions. You get the benefit of an easy to understand and maintain program with no loss in performance. In assembler, the oldest programs I inherited still used BAL logic for such routines, with a register save area. Later code may use a BAS/JAS with a register but not save the register, if that register isn't needed by the subroutine. Now I have subroutine macros that will call and return from such routine using a Jump. What I'm wondering is, is there a reasonable way to have HLASM inline the code? I mean, the code would be written as: Instruction Instruction * here's where I want to insert ROUTINE_A Instruction : : ROUTINE_A EQU * Routine A's instructions *end of routine A But it would assemble routine A in the place in the instruction stream where it was "called". I'm thinking it should be possible with LOCTR but I've never actually used that, and it isn't clear how. Note: If I were to actually do this, I'd do it by having the subroutine entry/exit/call macros generate the desired code.
