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ARM saturating arithmetic fixes (Paul Brook)

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1431 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2005-05-13 22:45:23 +00:00
parent 04d81be884
commit ff8263a951
2 changed files with 22 additions and 10 deletions
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17
target-arm/op.c
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@ -805,6 +805,23 @@ void OPPROTO op_subl_T0_T1_saturate(void)
FORCE_RET();
}
void OPPROTO op_double_T1_saturate(void)
{
int32_t val;
val = T1;
if (val >= 0x40000000) {
T1 = 0x7fffffff;
env->QF = 1;
} else if (val <= (int32_t)0xc0000000) {
T1 = 0x80000000;
env->QF = 1;
} else {
T1 = val << 1;
}
FORCE_RET();
}
/* thumb shift by immediate */
void OPPROTO op_shll_T0_im_thumb(void)
{