X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=base-target-features.lisp-expr;h=e469fdaa90d5ff0811288362de5b57ccb0d9a3e6;hb=711f75f20284c41f53485fda882fc7cc9e8e930f;hp=680e29d4433cdb23a01fd2fecc6b0ada4e40db9a;hpb=ebb604b4422ba886e70ce2e531c1f4d28d44e721;p=sbcl.git

diff --git a/base-target-features.lisp-expr b/base-target-features.lisp-expr
index 680e29d..e469fda 100644
--- a/base-target-features.lisp-expr
+++ b/base-target-features.lisp-expr
@@ -152,6 +152,11 @@
  ; :sb-hash-table-debug
 
  ;; Enabled automatically by make-config.sh for platforms which implement
+ ;; short vector SIMD intrinsics.
+ ;;
+ ; :sb-simd-pack
+
+ ;; Enabled automatically by make-config.sh for platforms which implement
  ;; the %READ-CYCLE-COUNTER VOP. Can be disabled manually: affects TIME.
  ;;
  ;; FIXME: Should this be :SB-CYCLE-COUNTER instead? If so, then the same goes
@@ -238,7 +243,7 @@
  ;; thread local storage) is not reliably preserved in signal
  ;; handlers, so we need to restore its value from the pthread thread
  ;; local storage.
- ; :restore-tls-segment-register-from-tls
+ ; :restore-fs-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
@@ -272,6 +277,11 @@
  ;; It'll increase the core size by major 5-6mB, though.
  ; :sb-xref-for-internals
 
+ ;; We support package local nicknames. No :sb-prefix here as we vainly
+ ;; believe our API is worth copying to other implementations as well.
+ ;; This doesn't affect the build at all, merely declares how things are.
+ :package-local-nicknames
+
  ;; This affects the definition of a lot of things in bignum.lisp. It
  ;; doesn't seem to be documented anywhere what systems it might apply
  ;; to. It doesn't seem to be needed for X86 systems anyway.
@@ -327,6 +337,7 @@
  ;; for the purpose of stopping and starting the world around GC can be
  ;; performed using safepoints instead of signals.  Enable this feature
  ;; to compile with safepoints and to use them for GC.
+ ;; (Replaces use of SIG_STOP_FOR_GC.)
  ; :sb-safepoint
 
  ;; When compiling with safepoints, the INTERRUPT-THREAD mechanism can
@@ -334,8 +345,17 @@
  ;; can be interrupted safely, instead of using a signal for this
  ;; purpose.  Enable this feature in addition to :SB-SAFEPOINT to enable
  ;; such behaviour.
+ ;; (Replaces use of SIGPIPE, except to wake up syscalls.)
  ; :sb-thruption
 
+ ;; When compiling with safepoints and thruptions, the TIMER facility
+ ;; can replace its use of setitimer with a background thread.
+ ;; (Replaces use of SIGALRM.)
+ ; :sb-wtimer
+
+ ;; This platform implements VOPs for %ash/right, variable-width shift right
+ ; :ash-right-vops
+
  ;;
  ;; miscellaneous notes on other things which could have special significance
  ;; in the *FEATURES* list