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author | Kartik Agaram <vc@akkartik.com> | 2020-01-01 17:04:37 -0800 |
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committer | Kartik Agaram <vc@akkartik.com> | 2020-01-01 17:04:37 -0800 |
commit | 2a4088119cf41175457414dfa59bd4064b8f0562 (patch) | |
tree | 64fe184e399f9870ebd481a90eec34d51e5dff68 /archive/2.transect/compiler2 | |
parent | 23fd294d85959c6b476bcdc35ed6ad508cc99b8f (diff) | |
download | mu-2a4088119cf41175457414dfa59bd4064b8f0562.tar.gz |
5852
Diffstat (limited to 'archive/2.transect/compiler2')
-rw-r--r-- | archive/2.transect/compiler2 | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/archive/2.transect/compiler2 b/archive/2.transect/compiler2 new file mode 100644 index 00000000..5c06cc4f --- /dev/null +++ b/archive/2.transect/compiler2 @@ -0,0 +1,27 @@ +to dereference a heap allocation + copy handle to stack + perform lookup to stack + +lookup x in *(ESP+4) of type (handle T) + + reg <- copy *(ESP+5) : (address T stack) + payload alloc id <- copy *reg + address alloc id <- copy *(ESP+4) + compare payload alloc id, address alloc id + jump if not equal to print stack trace and panic + address <- add reg, 1 + +types: + + address T reg + address T stack + address T heap + address T global + +copy down this spectrum is not permitted, but up is. + +addresses aren't allowed in types, globals and on the heap. Only handles. +addresses are only for temporary manipulations. + + +*(address T) <- copy T |