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guillep committed Aug 19, 2024
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8 changes: 4 additions & 4 deletions Chapters/4-Interpreter/figures/interpreter_activation-ascii.txt
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|| The Stack | |
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -._ +
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+
\/ Down | |
| callerFramePointer |
| method |
Expand All @@ -9,10 +9,10 @@
| temporary 1 |
| temporary 2 |
| ... |
| stack value n (send receiver) ------+--> someObject
| stack value n+1 (send argument 1 ) |
| "stack value n (send receiver)" ----+--> someObject
| "stack value n+1 (send argument 1 ) " |
| ... | ^
| stack value n+m (send argument n ) | |
| "stack value n+m (send argument n )" | |
| instructionPointer | |
framePointer ----->+--------------------------------------+ |
| callerFramePointer | |
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36 changes: 36 additions & 0 deletions Chapters/4-Interpreter/figures/interpreter_dnu-ascii.txt
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@@ -0,0 +1,36 @@
Before | | || The Stack
+._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+ || Grows
+._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+ \/ Down
+---------------------------------------+
framePointer ---->+ callerFramePointer |
| method |
| context |
| flags Caller's frame |
| receiver |
| temporary 1 |
| temporary 2 |
| ... |
| "stack value n (send receiver)" ---+-------------->+--+<-.
| "stack value n+1 (send argument 1)"---+---->+--+<---. +--+ |
| ... | +--+ | |
stackPointer ---->+ "stack value n+m (send argument n)"---+-->+--+<---. | |
+---------------------------------------+ +--+ | | |
| | |
Before Send | | |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + - - - + - - - - - -
After Send | | | +---+<--.
| | | | `-+-1 | |
+._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+ | | +---+ |
+._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+ | `---------+-2 | |
+---------------------------------------+ | +---+ |
framePointer ---->+ callerFramePointer | `-----------+-3 | |
| method | +---+ |
| context | message object |
| flags Caller's frame | .->+---------------+ |
| receiver | | | selector --+-> ... |
| temporary 1 | | | arguments --+----------'
| temporary 2 | | | lookupClass --+-> ...
| ... | | +---------------+
| "stack value n (send receiver)" | |
stackPointer ---->+ "stack value n+1 (send argument 1)"---+-'
+---------------------------------------+
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4 changes: 2 additions & 2 deletions Chapters/4-Interpreter/figures/interpreter_flags-ascii.txt
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@@ -1,7 +1,7 @@
+63 ------------------ 56 +55 - 32 +31 -- 24 +23 ----- 16 +15 --- 8 +7 ----- 0 +
| backjumpCount (JIT VM ) | unused | isBlock | hasContext | numArgs | 00000001 |
| "backjumpCount (JIT VM)"| unused | isBlock | hasContext | numArgs | 00000001 |
+-------------------------+--------+---------+------------+---------+----------+

+31 -------------------------- 24 +23 ----- 16 +15 --- 8 +7 ----- 0 +
| backjumpCount (JIT VM )/isBlock | hasContext | numArgs | 00000001 |
| "backjumpCount (JIT VM)/isBlock"| hasContext | numArgs | 00000001 |
+---------------------------------+------------+---------+----------+
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4 changes: 2 additions & 2 deletions Chapters/4-Interpreter/figures/interpreter_return-ascii.txt
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Before return : After return
:
|| The Stack | | : | |
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -._ + : +._ _ _.- - -._ _ _.- - -._ _ _.- - -._ +
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+ : +._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+
\/ Down +---------------------------------------+ : framePointer ---->+---------------------------------------+
| callerFramePointer | : | callerFramePointer |
| method | : | method |
Expand All @@ -14,7 +14,7 @@
| stack value n "(send receiver)" | : stackPointer ---->| stack value n "(return value)" |
| stack value n+1 "(send argument 1)" | : +---------------------------------------+
| ... | :
| stack value n+m "(send argument n )" | : .--------------.
| stack value n+m "(send argument n)" | : .--------------.
| saved instructionPointer -------------|--. : instructionPointer --. |object header |
framePointer ----->+--------------------------------------+ | : | |literal 0 |
| callerFramePointer | | : | |... |
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12 changes: 6 additions & 6 deletions Chapters/4-Interpreter/figures/interpreter_send-ascii.txt
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@@ -1,17 +1,17 @@
|| The Stack | |
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -._ +
\/ Down +._ _ _.- - -._ _ _.- - -._ _ _.- - -._ +
|| Grows +._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+
\/ Down +._ _ _.- - -._ _ _.- - -._ _ _.- - -.__+
+---------------------------------------+
framePointer ----->+callerFramePointer |
framePointer ---->+ callerFramePointer |
| method |
| context |
| flags Caller's frame |
| receiver |
| temporary 1 |
| temporary 2 |
| ... |
| stack value n (send receiver) +
| stack value n+1 (send argument 1 ) |
| stack value n "(send receiver)" +
| stack value n+1 "(send argument 1 )" |
| ... |
stackPointer -----> stack value n+m (send argument n ) |
stackPointer -----> stack value n+m "(send argument n )" |
+---------------------------------------+
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4 changes: 1 addition & 3 deletions Chapters/4-Interpreter/figures/interpreter_variables-ascii.txt
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framePointer ----------->+---------------------+
stackPointer --------. | callerFramePointer -+---> null (bottom of stack)
stackPointer --------. | callerFramePointer -+---> null "(bottom of stack)"
instructionPointer -. | | method -------------+--.
| | | context | \
| | | flags | '-->.--------------.
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3 changes: 3 additions & 0 deletions Chapters/4-Interpreter/theInterpreter.md
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Expand Up @@ -742,6 +742,9 @@ Then the original message reification is set up by:
- allocating an array to hold all the original arguments
- popping the arguments from the stack and store them in the new array
- allocating a message object and storing in it the original selector, argument array and lookup class
![Reifying the message for does not understand.](figures/interpreter_dnu.pdf?label=dnu_message)
Then, the `messageSelector` interpreter variable is overwritten with the `doesNotUnderstand:` selector found in the special objects array, and the lookup is restarted.
```caption=The lookup method revisited with `doesNotUnderstand:` support
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