* [Qemu-devel] Arm sbcs bugfix
@ 2005-02-02 15:41 Paul Brook
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From: Paul Brook @ 2005-02-02 15:41 UTC (permalink / raw)
To: qemu-devel
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The logic for setting CF in the arm sbcs instruction was wrong. The attached
patch fixes it. Found while testing some soft-float code.
Paul
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Index: target-arm/op.c
===================================================================
RCS file: /cvsroot/qemu/qemu/target-arm/op.c,v
retrieving revision 1.6
diff -u -p -r1.6 op.c
--- target-arm/op.c 31 Jan 2005 20:43:28 -0000 1.6
+++ target-arm/op.c 2 Feb 2005 15:25:49 -0000
@@ -190,10 +190,10 @@ void OPPROTO op_ ## sbc ## l_T0_T1_cc(vo
src1 = T0; \
if (!env->CF) { \
T0 = T0 - T1 - 1; \
- env->CF = src1 >= T1; \
+ env->CF = src1 > T1; \
} else { \
T0 = T0 - T1; \
- env->CF = src1 > T1; \
+ env->CF = src1 >= T1; \
} \
env->VF = (src1 ^ T1) & (src1 ^ T0); \
env->NZF = T0; \
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2005-02-02 15:41 [Qemu-devel] Arm sbcs bugfix Paul Brook
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