The aim is to create a Forth word in the dictionary and then print out the memory content of that word. The first step is easy. The : main word is created like described in tutorial. After creating the word, the dictionary pointer is moved to the next position, so I have to subtract some items from it and now it's possible to dump out the memory area in which the word was created:
\ create a dummy routine
: main 1 dup + . ;
\ put dictionary pointer to the stack
\ and subtract 50 indizies
dp 50 -
\ print out 20 cells to the screen from dp-50 until dp+50
\ but where is my newly created routine ": main"?
100 dump
bye
------
gforth "a.fs"
7F81DF443FC6: 00 00 20 17 12 AF 60 55 - 00 00 04 00 00 00 00 00 .. ...`U........
7F81DF443FD6: 00 00 A0 58 14 AF 60 55 - 00 00 10 00 00 00 00 00 ...X..`U........
7F81DF443FE6: 00 00 FF FF FF FF FF FF - FF FF 00 00 00 00 00 00 ................
7F81DF443FF6: 00 00 50 82 49 DF 81 7F - 00 00 F8 3F 44 DF 81 7F ..P.I......?D...
7F81DF444006: 00 00 08 82 49 DF 81 7F - 00 00 F0 81 49 DF 81 7F ....I.......I...
7F81DF444016: 00 00 32 00 00 00 00 00 - 00 00 00 00 00 00 00 00 ..2.............
7F81DF444026: 00 00 00 00
Unfortunately, the memory region shown by the dump command doesn't have a section which starts with : main and the statements inside the word 1 dup ... are also missing. So where exactly is the newly created word? How can I see the raw bytes in the memory?
1) There is a predefined word see which should do what you want and looking into the respective sources should give you a hint.
2) Your approach only works for a certain memory model, i. e. putting names and code into the same region, which is far from guaranteed. (I'm not sure, whether it would work for Gforth). From dup, 1, +, etc. you would recognize nothing, since they are replaced by the corresponding addresses or call instructions.