mu/318counter.subx
Kartik K. Agaram 8dc3c85a03 .
Minor counter infrastructure. We invoke next-token 1400 times while loading
the shell's data disk, so we're wasting around 1.4MB during tokenization.
2021-05-29 15:40:58 -07:00

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# A rudimentary counter that can be called from anywhere.
== code
count-event:
# . prologue
55/push-ebp
89/<- %ebp 4/r32/esp
#
ff 0/subop/increment *Foo
$count-event:end:
# . epilogue
89/<- %esp 5/r32/ebp
5d/pop-to-ebp
c3/return
count-of-events: # -> _/eax: int
# . prologue
55/push-ebp
89/<- %ebp 4/r32/esp
#
8b/-> *Foo 0/r32/eax
$count-of-events:end:
# . epilogue
89/<- %esp 5/r32/ebp
5d/pop-to-ebp
c3/return
== data
Foo:
0/imm32