Added tests for debug.pvvs.

[vvhitespace] / stdlib / README.md

diff --git a/stdlib/README.md b/stdlib/README.md
index 099a70e..2bd317e 100644 (file)
--- a/stdlib/README.md
+++ b/stdlib/README.md
@@ -19,9 +19,9 @@ following reservations:
 ## Heap and Pointers ##
 
 The first 16 heap addresses (`0-15`) are reserved when using the stdlib.
 ## Heap and Pointers ##
 
 The first 16 heap addresses (`0-15`) are reserved when using the stdlib.

-Within that reservation, heap[0] is used by `random` and heap[15] is used
-by `spewreg`. The remaining 14 locations, heap[1]-heap[14] are used as
-general-purpose registers.
+Within that reservation, heap[0] is used by `random` and the block
+heap[2]-heap[15] by the stack rotation subroutines which time-share these
+pseudo-registers between the various stdlib subroutines.

 
 By convention, functions which return a pointer will use the address `0` to
 represent a `NULL` pointer.
 
 By convention, functions which return a pointer will use the address `0` to
 represent a `NULL` pointer.


@@ -63,9 +63,12 @@ header comment for each function to learn the call and return stack.
          111xxx - debug functions
          111000 ----- dump heap                     (debug.pvvs)
          111001 ----- dump stack                    (debug.pvvs)
          111xxx - debug functions
          111000 ----- dump heap                     (debug.pvvs)
          111001 ----- dump stack                    (debug.pvvs)

+         111010 ----- print sign                    (debug.pvvs)
+         111011 ----- print magnitude               (debug.pvvs)
+         111100 ----- print string                  (debug.pvvs)

         1xxxxxx - reserved for less common entry points
         1xxxxxx - reserved for less common entry points

-        1000000 ----- <empty>
-        1000001 ----- <empty>
+        1000000 ----- lowbitand                     (logic.pvvs)
+        1000001 ----- isnegative                    (math.pvvs)

         1000010 ----- print sign of number          (stdio.pvvs)
         1000011 ----- print magnitude of number     (stdio.pvvs)
         1000100 ----- print string from stack       (stdio.pvvs)
         1000010 ----- print sign of number          (stdio.pvvs)
         1000011 ----- print magnitude of number     (stdio.pvvs)
         1000100 ----- print string from stack       (stdio.pvvs)