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target-s390: Convert LFPC, SFPC

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Note that we were failing to set the rounding mode in fpu_status.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2012-08-24 07:44:43 -07:00
parent 102bf2c635
commit 8379bfdbca
4 changed files with 31 additions and 57 deletions
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17
target-s390x/fpu_helper.c
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@ -577,3 +577,20 @@ uint64_t HELPER(sqxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
handle_exceptions(env, GETPC());
return RET128(ret);
}
/* set fpc */
void HELPER(sfpc)(CPUS390XState *env, uint64_t fpc)
{
static const int rnd[4] = {
float_round_nearest_even,
float_round_to_zero,
float_round_up,
float_round_down
};
/* Install everything in the main FPC. */
env->fpc = fpc;
/* Install the rounding mode in the shadow fpu_status. */
set_float_rounding_mode(rnd[fpc & 3], &env->fpu_status);
}