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m68k: broken constraints on mulu.l

PATCH In review Al Viro 1 participant 1 message Dec 22, 2005 m68k architecture

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Al Viro

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PATCH 15/36 m68k: broken constraints on mulu.l

From: Al Viro <[email protected]>
Date: 1133436151 -0500

too permissive constraint on mulu.l - the first argument should not be an a-register. Fixed by replacing "g" with "dm"; with older gcc we got lucky and it had never attempted mulu.l %a0, %d1:%d0. These days it does, with predictable objections from as(1).

---

 arch/m68k/math-emu/multi_arith.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

9148d1c507b37d890fa6690d6d3c3cd461cecbcf

arch/m68k/math-emu/multi_arith.h +1 -1
index 02251e5..4ad0ca9 100644
@@ -366,7 +366,7 @@ static inline void fp_submant(struct fp_
 
 #define fp_mul64(desth, destl, src1, src2) ({				\
 	asm ("mulu.l %2,%1:%0" : "=d" (destl), "=d" (desth)		\
-		: "g" (src1), "0" (src2));				\
+		: "dm" (src1), "0" (src2));				\
 })
 #define fp_div64(quot, rem, srch, srcl, div)				\
 	asm ("divu.l %2,%1:%0" : "=d" (quot), "=d" (rem)		\
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