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# 07jun12abu
# (c) Software Lab. Alexander Burger
### Primary data types ###
cnt xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxS010
big xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxS100
sym xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx1000
pair xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx0000
Bignum
|
V
+-----+-----+
| DIG | | |
+-----+--+--+
|
V
+-----+-----+
| DIG | | |
+-----+--+--+
|
V
+-----+-----+
| DIG | CNT |
+-----+-----+
Pair
|
V
+-----+-----+
| CAR | CDR |
+-----+-----+
Symbol
|
V
+-----+-----+ +-----+-----+
| | | VAL | |'cba'|'fed'|
+--+--+-----+ +-----+-----+
| tail ^
| |
V | name
+-----+-----+ +-----+-----+ +-----+--+--+
| | | ---+---> | KEY | ---+---> | | | | |
+--+--+-----+ +-----+-----+ +--+--+-----+
| |
V V
+-----+-----+ +-----+-----+
| VAL | KEY | | VAL | KEY |
+-----+-----+ +-----+-----+
NIL: /
|
V
+-----+-----+-----+-----+
|'LIN'| / | / | / |
+-----+--+--+-----+-----+
Symbol tail
Internal/Transient
0010 Short name
0100 Long name
0000 Properties
External
1010 Short name
1000 Properties
Name final short
Internals, Transients
0000.xxxxxxx.xxxxxxx.xxxxxxx.xxxxxxx.xxxxxxx.xxxxxxx.xxxxxxx0010
60 52 44 36 28 20 12 4
Externals
42 bit Object (4 Tera objects)
16 bit File (64 K files)
2 bit Status
Loaded 01........
Dirty 10........
Deleted 11........
1+2 Bytes: 1 file, 64K objects {177777}
1+3 Bytes: 16 files, 1M objects {O3777777}
1+4 Bytes: 256 files, 16M objects {OO77777777}
1+5 Bytes: 256 files, 4G objects {OO37777777777}
1+6 Bytes: 65536 files, 4G objects {OOOO37777777777}
1+8 Bytes: 65536 files, 4T objects {OOOO77777777777777}
(2 + 10 + 8 + 12 + 8 + 20)
xx.xxxxxxxxx.xxxxxxx.xxxxxxxxxxx.xxxxxxx.xxxxxxxxxxxxxxxxxxxE010
obj file obj file obj
^6 ^5 ^4 ^3 ^2
### Heap ###
Heaps Avail
| |
| | +-----------------------+
| | | |
V V | V
+-----+-----+--+--+-----+-----+-----+-----+-----+--- ---+-----+
| | | | | | / | | ... | | |
+-----+-----+-----+-----+-----+-----+-----+-----+--- ---+--+--+
|
|
+----->
### Stack ###
Saved values:
^
|
+---> LINK ----+
| val1
| val2
| ...
| valN
+---- LINK <-- L
Bind frame:
^
Bind |
+---> LINK ----+
| val1
| sym1
| ...
| valN
| symN
+---- LINK <-- L <-- Bind
eswp
VarArgs frame:
^
Bind |
+---> LINK ----+
| val1
| sym1
| ...
| valN
| symN
+---- LINK <---+ <-- Bind
eswp |
Next |
Args |
+---> LINK ----+ <-- Next
| arg1
| ...
| argN <-- Args
+---- LINK <-- L
Apply args:
^
|
+---> LINK ----+
| ...
| fun <-- Y
| arg1
| ...
| argN <-- Z
| ...
+---- LINK <-- L
Apply frame:
^
Apply |
+---> LINK ----+
| ...
| valN <-+ (gc)
| zero |
| NIL | (gc)
| carN --+ <-+
| ... |
| val1 <-+ | (gc)
| zero | |
| cdr1 --|---+ (gc)
| +-> car1 --+
| +-- cdr (gc)
| fun <-- exe
+---- LINK <-- L <-- Apply
Catch frame:
^
X |
Y |
Z |
L |
<III> [env] |
<II> fin |
<I> tag |
LINK ----+ <-- Catch
I/O frame:
^
<III> put/get |
<II> pid |
<I> fd |
LINK ----+ <-- inFrames, outFrames, errFrames, ctlFrames
Coroutine frame:
^
X |
Y |
Z |
L |
<III> [env] |
<II> seg |
<I> lim |
LINK ----+ <-- co7
Stack segment:
<-I> tag # Tag
<-II> stk # Stack pointer --+
[env] # Environment |
Stack ... |
X |
Y |
Z |
L <-----------------------+
### Memory ###
inFile:
--> fd # File descriptor
<I> ix # Read index
<II> cnt # Buffer count
<III> next # Next character
<IV> line # Line number
<V> src # Source line number
<VI> name # Filename
<VII> buf # Buffer [BUFSIZ]
outFile:
--> fd # File descriptor
<I> ix # Read index
<II> tty # TTY flag
<III> buf # Buffer [BUFSIZ]
child:
--> pid # Process ID
<I> hear # Pipe read end
<II> tell # Pipe write end
<III> ofs # Buffer offset
<IV> cnt # Buffer count
<V> buf # Buffer pointer
+--------------------------+ Mic
|
| +-----------------+ Tell <Child>
| |
| +-----------------> Hear
<Parent> | |
| |
Spkr <---+ |
| |
| |
| +-----------------+ Tell
| |
| +-----------------> Hear <Child>
|
+--------------------------+ Mic
### Database file ###
+-------------+-+-------------+-+----+
Block 0: | Free 0| Next 0| << |
+-------------+-+-------------+-+----+
0 BLK 2*Blk+1
+-------------+-+
Free: | Link 0|
+-------------+-+
0
+-------------+-+----
ID-Block: | Link 1| Data
+-------------+-+----
0 BLK
+-------------+-+----
EXT-Block: | Link n| Data
+-------------+-+----
0 BLK
dbFile: # Size VIII (64 bytes)
--> fd # File descriptor
<I> db # File number
<II> sh # Block shift
<III> siz # Block size (64 << sh)
<IV> flgs # Flags: Lock(0), Dirty(1)
<V> marks # Mark vector size
<VI> mark # Mark bit vector
<VII> fluse # Free list use count
### Assumptions ###
- 8 bit per byte
- 64 bit per word
- Stack grows downwards, aligned to 64 bit
- Memory access legal also at 4-byte boundaries
|
