[cmucl-commit] [git] CMU Common Lisp branch master updated. snapshot-2012-02-12-gc623db6

[Raymond Toy]

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- Log -----------------------------------------------------------------
commit c623db61db3f9538b79582a1331d86f22d03e7ac
Author: Raymond Toy <toy.raymond at gmail.com>
Date:   Sat Feb 11 18:16:23 2012 -0800

    Add the fpu type to kernel.core on x86.  Needed to set the fpu_mode
    when it's loaded so that the C code knows what to do.  In particular
    call_into_lisp needs to know to save the correct fpu state.

diff --git a/src/compiler/generic/new-genesis.lisp b/src/compiler/generic/new-genesis.lisp
index d356c36..ee417f4 100644
--- a/src/compiler/generic/new-genesis.lisp
+++ b/src/compiler/generic/new-genesis.lisp
@@ -2925,9 +2925,22 @@
       ;; Write the Version entry.
       ;; 
       (write-long version-entry-type-code)
-      (write-long 3)
-      (write-long version)
 
+      ;; For x86, identify the core as using either x87 or sse2
+      ;; instructions.
+      (cond ((and (eql (c:backend-fasl-file-implementation c:*backend*)
+		       c:x86-fasl-file-implementation)
+		  (c:backend-featurep :sse2))
+	     (write-long 4)
+	     (write-long version)
+	     ;; See the definition of fpu_mode_t in lisp.h for correct
+	     ;; values to use here.
+	     (write-long (if (c:backend-featurep :sse2)
+			     2		; fpu_mode_t = SSE2
+			     1)))
+	    (t
+	     (write-long 3)
+	     (write-long version)))
       ;; Write the New Directory entry header.
       ;; 
       (write-long new-directory-entry-type-code)

-----------------------------------------------------------------------

Summary of changes:
 src/compiler/generic/new-genesis.lisp |   17 +++++++++++++++--
 1 files changed, 15 insertions(+), 2 deletions(-)


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