X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=019b37efcf557566e2bcaf737fa6d9bfdab31db8;hb=05bb9b2b4ff04fb85067aa31c84d205b7a00c390;hp=60161d41f93cc3646431b34864bd7fd8e3bf6c6e;hpb=1baab0bfb9538caec57262ed37f693507f6f33ec;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index 60161d4..019b37e 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -237,6 +237,11 @@
  ;; local storage.
  ; :restore-tls-segment-register-from-tls
 
+ ;; On some x86oid operating systems (darwin) SIGTRAP is not reliably
+ ;; delivered for the INT3 instruction, so we use the UD2 instruction
+ ;; which generates SIGILL instead.
+ ; :ud2-breakpoints
+
  ;; Support for detection of unportable code (when applied to the
  ;; COMMON-LISP package, or SBCL-internal pacakges) or bad-neighbourly
  ;; code (when applied to user-level packages), relating to material
@@ -304,6 +309,17 @@
  ;; foreign code that uses a 32-bit off_t.
  ; :largefile
 
+ ;; Enabled automatically on platforms that have VOPs to compute the
+ ;; high half of a full word-by-word multiplication.  When disabled,
+ ;; SB-KERNEL:%MULTIPLY-HIGH is implemented in terms of
+ ;; SB-BIGNUM:%MULTIPLY.
+ ; :multiply-high-vops
+
+ ;; SBCL has optional support for zlib-based compressed core files.  Enable
+ ;; this feature to compile it in.  Obviously, doing so adds a dependency
+ ;; on zlib.
+ ; :sb-core-compression
+
  ;;
  ;; miscellaneous notes on other things which could have special significance
  ;; in the *FEATURES* list
@@ -385,6 +401,10 @@
  ;;   :compare-and-swap-vops
  ;;     The backend implements compare-and-swap VOPs.
  ;;
+ ;;   :memory-barrier-vops
+ ;;     Memory barriers (for multi-threaded synchronization) have been
+ ;;     implemented for this platform.
+ ;;
  ;; operating system features:
  ;;   :unix    = We're intended to run under some Unix-like OS. (This is not
  ;;              exclusive with the features which indicate which particular