diff options
| author | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2005-05-13 22:45:23 +0000 |
|---|---|---|
| committer | bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162> | 2005-05-13 22:45:23 +0000 |
| commit | ff8263a951c5ce22bef919c792d20e5cbf5066b3 (patch) | |
| tree | 1a1eef28450d113a8d054660fd5bbdeda62e00a3 /target-arm/op.c | |
| parent | 04d81be884925127e2ebee994e4a89ce44eab06e (diff) | |
| download | qemu-ff8263a951c5ce22bef919c792d20e5cbf5066b3.zip | |
ARM saturating arithmetic fixes (Paul Brook)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1431 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-arm/op.c')
| -rw-r--r-- | target-arm/op.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/target-arm/op.c b/target-arm/op.c index 0a3811ed2f..8a82def79a 100644 --- a/target-arm/op.c +++ b/target-arm/op.c @@ -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) { |