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authorIrene Knapp <ireneista@irenes.space>2026-05-14 21:02:02 -0700
committerIrene Knapp <ireneista@irenes.space>2026-05-14 21:02:02 -0700
commit64d4667d9ffec1f3386400f03e3b781733acd9b3 (patch)
treef1531de8198a3c9cc0c0dd82185e76c446facfb6 /quine.asm
parent31d2a4d52330bb72f282333531594b48e1589975 (diff)
add a next-source field, as-yet unused, to the input buffer metadata
this will support transformations

Force-Push: yes
Change-Id: I741e8f18eef456c836d8eb1b01ec4463a6c8898c
Diffstat (limited to 'quine.asm')
-rw-r--r--quine.asm27
1 files changed, 23 insertions, 4 deletions
diff --git a/quine.asm b/quine.asm
index 5419cd2..df771db 100644
--- a/quine.asm
+++ b/quine.asm
@@ -6254,6 +6254,18 @@ cold_start:
   dq litstring, "exit", early_find, entry_to_execution_token, early_comma
   dq early_here, fetch, lit, 8, packalign, early_here_store
 
+  ; In:
+  ;   pointer to input buffer metadata
+  ; Out:
+  ;   pointer to input buffer "next-source" field
+  dq litstring, "input-buffer-next-source", 0, early_create
+  dq early_docol_codeword
+  dq litstring, "lit", early_find, entry_to_execution_token, early_comma
+  dq lit, 5*8, early_comma
+  dq litstring, "+", early_find, entry_to_execution_token, early_comma
+  dq litstring, "exit", early_find, entry_to_execution_token, early_comma
+  dq early_here, fetch, lit, 8, packalign, early_here_store
+
   ;   Given an initialized buffer (input or otherwise), sets its logical-start
   ; and logical-length fields to indicate the buffer is empty. This relies on
   ; the buffer having a backing store attached, but does not alter the backing
@@ -6319,13 +6331,20 @@ cold_start:
   dq lit, 0, early_comma
   dq litstring, "swap", early_find, entry_to_execution_token, early_comma
   dq litstring, "!", early_find, entry_to_execution_token, early_comma
-  ; Notice the absence of a dup this time.
+  dq litstring, "dup", early_find, entry_to_execution_token, early_comma
   dq litstring, "input-buffer-refill", early_find, entry_to_execution_token
   dq early_comma
   dq litstring, "lit", early_find, entry_to_execution_token, early_comma
   dq lit, 0, early_comma
   dq litstring, "swap", early_find, entry_to_execution_token, early_comma
   dq litstring, "!", early_find, entry_to_execution_token, early_comma
+  ; Notice the absence of a dup this time.
+  dq litstring, "input-buffer-next-source", 0, early_find
+  dq entry_to_execution_token, early_comma
+  dq litstring, "lit", early_find, entry_to_execution_token, early_comma
+  dq lit, 0, early_comma
+  dq litstring, "swap", early_find, entry_to_execution_token, early_comma
+  dq litstring, "!", early_find, entry_to_execution_token, early_comma
   dq litstring, "exit", early_find, entry_to_execution_token, early_comma
   dq early_here, fetch, lit, 8, packalign, early_here_store
 
@@ -6337,7 +6356,7 @@ cold_start:
   dq litstring, "allocate-input-buffer-metadata", early_create
   dq early_docol_codeword
   dq litstring, "lit", early_find, entry_to_execution_token, early_comma
-  dq lit, 5*8, early_comma
+  dq lit, 6*8, early_comma
   dq litstring, "allocate", 0, early_find, entry_to_execution_token
   dq early_comma
   dq litstring, "dup", early_find, entry_to_execution_token, early_comma
@@ -6356,7 +6375,7 @@ cold_start:
   dq litstring, "allocate-input-buffer", early_create, early_docol_codeword
   dq litstring, "dup", early_find, entry_to_execution_token, early_comma
   dq litstring, "lit", early_find, entry_to_execution_token, early_comma
-  dq lit, 5*8, early_comma
+  dq lit, 6*8, early_comma
   dq litstring, "+", early_find, entry_to_execution_token, early_comma
   dq litstring, "allocate", 0, early_find, entry_to_execution_token
   dq early_comma
@@ -6367,7 +6386,7 @@ cold_start:
   dq litstring, "dup", early_find, entry_to_execution_token, early_comma
   dq litstring, "dup", early_find, entry_to_execution_token, early_comma
   dq litstring, "lit", early_find, entry_to_execution_token, early_comma
-  dq lit, 5*8, early_comma
+  dq lit, 6*8, early_comma
   dq litstring, "+", early_find, entry_to_execution_token, early_comma
   ; (capacity in bytes, metadata pointer, metadata pointer, physical start)
   dq litstring, "swap", early_find, entry_to_execution_token, early_comma