0.8.6.14:

[sbcl.git] / src / compiler / generic / early-objdef.lisp

diff --git a/src/compiler/generic/early-objdef.lisp b/src/compiler/generic/early-objdef.lisp
index 7407e4a..f639f6c 100644 (file)
--- a/src/compiler/generic/early-objdef.lisp
+++ b/src/compiler/generic/early-objdef.lisp
@@ -27,6 +27,15 @@
 ;;;   * LIST-POINTER-LOWTAG + 4 = OTHER-POINTER-LOWTAG: NIL is both a
 ;;;     cons and a symbol (at the same address) and depends on this.
 ;;;     See the definition of SYMBOL in objdef.lisp
+;;;   * OTHER-POINTER-LOWTAG > 4: Some code in the SPARC backend,
+;;;     which uses bit 2 of the ALLOC register to indicate that
+;;;     PSEUDO-ATOMIC is on, doesn't strip the low bits of reg_ALLOC
+;;;     before ORing in OTHER-POINTER-LOWTAG within a PSEUDO-ATOMIC
+;;;     section.
+;;; (These are just the ones we know about as of sbcl-0.7.1.22. There
+;;; might easily be more, since these values have stayed highly
+;;; constrained for more than a decade, an inviting target for
+;;; inventive abstraction-phobic maintainers.:-)
 (eval-when (:compile-toplevel :load-toplevel :execute)
   ;; The EVAL-WHEN is necessary (at least for Lispworks), because the
   ;; second DEFENUM uses the value of OTHER-IMMEDIATE-0-LOWTAG, which is
@@ -63,13 +72,18 @@
   #!+long-float complex-long-float
 
   simple-array
-  simple-string
+  simple-array-nil
+  simple-base-string
   simple-bit-vector
   simple-vector
   simple-array-unsigned-byte-2
   simple-array-unsigned-byte-4
+  simple-array-unsigned-byte-7
   simple-array-unsigned-byte-8
+  simple-array-unsigned-byte-15
   simple-array-unsigned-byte-16
+  simple-array-unsigned-byte-29
+  simple-array-unsigned-byte-31
   simple-array-unsigned-byte-32
   simple-array-signed-byte-8
   simple-array-signed-byte-16
@@ -81,7 +95,8 @@
   simple-array-complex-single-float
   simple-array-complex-double-float
   #!+long-float simple-array-complex-long-float
-  complex-string
+  complex-base-string
+  complex-vector-nil
   complex-bit-vector
   complex-vector
   complex-array
@@ -90,7 +105,7 @@
   simple-fun-header
   closure-header
   funcallable-instance-header
-  closure-fun-header
+  nil ; this was closure-fun-header; remove when +FASL-FILE-VERSION+ will increase
 
   return-pc-header
   value-cell-header