NetBSD PR#2761 (wrong fmovem emulation) from Takeshi Nakayama

(takeshi@sakabe.nuie.nagoya-u.ac.jp).  Untested by me, but it
looks correct against the FP User's manual.

diff --git a/sys/arch/m68k/fpe/fpu_emulate.c b/sys/arch/m68k/fpe/fpu_emulate.c
index 172f393..472ec39 100644 (file)
--- a/sys/arch/m68k/fpe/fpu_emulate.c
+++ b/sys/arch/m68k/fpe/fpu_emulate.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: fpu_emulate.c,v 1.4 1996/05/29 11:29:30 niklas Exp $  */
+/*     $OpenBSD: fpu_emulate.c,v 1.5 1996/09/18 02:09:29 briggs Exp $  */
 /*     $NetBSD: fpu_emulate.c,v 1.6 1996/05/15 07:31:55 leo Exp $      */
 
 /*
@@ -446,7 +446,7 @@ fpu_emul_fmovm(fe, insn)
     int word1, sig;
     int reglist, regmask, regnum;
     int fpu_to_mem, order;
-    int w1_post_incr;          /* XXX - FP regs order? */
+    int w1_post_incr;
     int *fpregs;
 
     insn->is_advance = 4;
@@ -488,7 +488,11 @@ fpu_emul_fmovm(fe, insn)
     }
 
     while ((0 <= regnum) && (regnum < 8)) {
-       regmask = 1 << regnum;
+       if (w1_post_incr) {
+           regmask = 0x80 >> regnum;
+       } else {
+           regmask = 1 << regnum;
+       }
        if (regmask & reglist) {
            if (fpu_to_mem) {
                sig = fpu_store_ea(frame, insn, &insn->is_ea0,