[src/trunk]: src/sys/arch/mips/mips Fix cvt.d.s per analysis by Marcus Comste...

[tsutsui <tsutsui%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f33cb3c35765
branches:  trunk
changeset: 762669:f33cb3c35765
user:      tsutsui <tsutsui%NetBSD.org@localhost>
date:      Fri Feb 25 11:44:56 2011 +0000

description:
Fix cvt.d.s per analysis by Marcus Comstedt in PR port-mips/36251.
Confirmed on ews4800mips.

diffstat:

 sys/arch/mips/mips/fp.S |  4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diffs (18 lines):

diff -r edbb30324164 -r f33cb3c35765 sys/arch/mips/mips/fp.S
--- a/sys/arch/mips/mips/fp.S   Fri Feb 25 10:59:32 2011 +0000
+++ b/sys/arch/mips/mips/fp.S   Fri Feb 25 11:44:56 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fp.S,v 1.39 2011/02/24 16:49:15 tsutsui Exp $  */
+/*     $NetBSD: fp.S,v 1.40 2011/02/25 11:44:56 tsutsui Exp $  */
 
 /*
  * Copyright (c) 1992, 1993
@@ -1827,6 +1827,8 @@
        beq     t2, zero, result_fs_d           # is FS zero?
        jal     _C_LABEL(renorm_fs_s)
        move    t9, zero
+       sll     t3, t2, 32 - 3                  # convert S fraction to D
+       srl     t2, t2, 3
        b       norm_d
 2:
        addu    t1, t1, DEXP_BIAS - SEXP_BIAS   # bias exponent correctly