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From: Peter Wemm <peter@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 37623 for review
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http://perforce.freebsd.org/chv.cgi?CH=37623

Change 37623 by peter@peter_hammer on 2003/09/05 15:54:13

	update fpjmp_buf with real offsets

Affected files ...

.. //depot/projects/ezm3/libs/m3core/src/C/FBSD_AMD64/Csetjmp.i3#4 edit

Differences ...

==== //depot/projects/ezm3/libs/m3core/src/C/FBSD_AMD64/Csetjmp.i3#4 (text+ko) ====

@@ -14,9 +14,11 @@
   jmp_buf = ARRAY [0..11] OF long; (* actually, this is a sigjmp_buf,
                                      just in case *)
 
+  (* We use a special state for context switching due to floating point,
+     which setjmp/longjmp do not deal with. Record length = 72 longs. *)
   fpjmp_buf = RECORD
-    int_stuff: ARRAY [0..79] OF long;
-    fp_stuff:  ARRAY [xx .. yy] OF long_double;
+    int_stuff: ARRAY [0..7] OF long; (* integer registers *)
+    fp_stuff:  ARRAY [0..31] OF long_double; (* floating point fxsave *)
   END;
 
 <*EXTERNAL "setjmp"   *> PROCEDURE setjmp (VAR env: jmp_buf): int;