sim: bfin: handle the MM flag in M_IU/M_TFU modes with dsp insns
Our handling of the M_IU/M_TFU modes are missing signed saturation when the MM flag is set, so add it to match the hardware behavior. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
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@ -1,3 +1,9 @@
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2011-06-18 Robin Getz <robin.getz@analog.com>
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* bfin-sim.c (extract_mult): Call saturate_s32 when MM is set
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and mmod is M_IU. Call saturate_s16 when MM is set and mmod
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is M_TFU.
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2011-06-18 Robin Getz <robin.getz@analog.com>
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2011-06-18 Robin Getz <robin.getz@analog.com>
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* bfin-sim.c (decode_multfunc): Call new is_macmod_signed, and
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* bfin-sim.c (decode_multfunc): Call new is_macmod_signed, and
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@ -1516,6 +1516,8 @@ extract_mult (SIM_CPU *cpu, bu64 res, int mmod, int MM,
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case M_IS:
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case M_IS:
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return saturate_s32 (res, overflow);
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return saturate_s32 (res, overflow);
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case M_IU:
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case M_IU:
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if (MM)
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return saturate_s32 (res, overflow);
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return saturate_u32 (res, overflow);
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return saturate_u32 (res, overflow);
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case M_FU:
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case M_FU:
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if (MM)
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if (MM)
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@ -1559,6 +1561,8 @@ extract_mult (SIM_CPU *cpu, bu64 res, int mmod, int MM,
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case M_T:
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case M_T:
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return saturate_s16 (trunc16 (res), overflow);
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return saturate_s16 (trunc16 (res), overflow);
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case M_TFU:
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case M_TFU:
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if (MM)
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return saturate_s16 (trunc16 (res), overflow);
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return saturate_u16 (trunc16 (res), overflow);
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return saturate_u16 (trunc16 (res), overflow);
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case M_S2RND:
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case M_S2RND:
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