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authorIvan Kokshaysky <ink@jurassic.park.msu.ru>2008-01-17 15:21:13 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-01-17 15:38:59 -0800
commit6b2d2cec1081a979e0efd6a1e9559e5a01a3c10e (patch)
treecf54841ec279d46c7535f096ded597808f690589 /arch/alpha/math-emu
parentf63dcda197bd71c6565c2121bf70e3d371539f90 (diff)
downloadlinux-6b2d2cec1081a979e0efd6a1e9559e5a01a3c10e.tar.gz
alpha: fix conversion from denormal float to double
The trap handler does properly update the fraction, but not the exponent... Thanks to Paolo Bonzini for the bug report and the testcase. Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Paolo Bonzini <bonzini@gnu.org> Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/alpha/math-emu')
-rw-r--r--arch/alpha/math-emu/math.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/alpha/math-emu/math.c b/arch/alpha/math-emu/math.c
index ae79dd970b02..58c2669a1dd4 100644
--- a/arch/alpha/math-emu/math.c
+++ b/arch/alpha/math-emu/math.c
@@ -225,7 +225,7 @@ alpha_fp_emul (unsigned long pc)
FP_UNPACK_SP(SB, &vb);
DR_c = DB_c;
DR_s = DB_s;
- DR_e = DB_e;
+ DR_e = DB_e + (1024 - 128);
DR_f = SB_f << (52 - 23);
goto pack_d;
}