System Debug Reference Manual (32650-90888)

Appendix C 541
Emulated/Translated CM Code
Executing a Translated Section
Executing a Translated Section
The following diagram indicates that the NM program counter (pc >) is located at the start
(node point) of a NM translated section of code.
When all of the instructions in this section are executed, (that is, when pc advances to the
next node point at PROC+%6), then the state of the machine is exactly the same as if the
four original CM object code instructions had been executed (PROC+%2 through PROC+%6).
Original CM Translated
Object Code Object Code
Translated
Into
CM Instructions NM Instructions
+-------------+
| PROC+%0 | N
| |
| ----------- | ----+ | |
N | PROC+%2 | | | |
| PROC+%3 | +---- | ----------- |
| PROC+%4 | pc > | PROC+%2 | N
| PROC+%5 | | |
| ----------- | ----+ | Translated |
| | Section |
| | |
+---- | ----------- |
| PROC+%6 | N
| |
| |
| |
| ----------- |
| PROC+%13 | N
| |
| |
| |
| |
| |
| |
| |
+-------------+
Note that if, for example, only half of the NM translated section has been executed, it is not
equivalent to emulating the first half of the original CM object code instructions.
NOTE There may not be any correspondence between the relative position and sizes
of emulated versus translated code sections.