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target-tricore: Added FTOUZ instruction

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Converts a 32-bit floating point number to an unsigned int. The
result is rounded towards zero.

Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Reviewed-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Bastian Koppelmann 2016-10-06 16:46:36 +02:00
parent b44486dfb9
commit 8f75983db8
3 changed files with 31 additions and 0 deletions
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27
target/tricore/fpu_helper.c
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@ -215,3 +215,30 @@ uint32_t helper_itof(CPUTriCoreState *env, uint32_t arg)
}
return (uint32_t)f_result;
}
uint32_t helper_ftouz(CPUTriCoreState *env, uint32_t arg)
{
float32 f_arg = make_float32(arg);
uint32_t result;
int32_t flags;
result = float32_to_uint32_round_to_zero(f_arg, &env->fp_status);
flags = f_get_excp_flags(env);
if (flags & float_flag_invalid) {
flags &= ~float_flag_inexact;
if (float32_is_any_nan(f_arg)) {
result = 0;
}
} else if (float32_lt_quiet(f_arg, 0, &env->fp_status)) {
flags = float_flag_invalid;
result = 0;
}
if (flags) {
f_update_psw_flags(env, flags);
} else {
env->FPU_FS = 0;
}
return result;
}

1
target/tricore/helper.h
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@ -112,6 +112,7 @@ DEF_HELPER_3(fdiv, i32, env, i32, i32)
DEF_HELPER_3(fcmp, i32, env, i32, i32)
DEF_HELPER_2(ftoi, i32, env, i32)
DEF_HELPER_2(itof, i32, env, i32)
DEF_HELPER_2(ftouz, i32, env, i32)
/* dvinit */
DEF_HELPER_3(dvinit_b_13, i64, env, i32, i32)
DEF_HELPER_3(dvinit_b_131, i64, env, i32, i32)

3
target/tricore/translate.c
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@ -6698,6 +6698,9 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx)
case OPC2_32_RR_ITOF:
gen_helper_itof(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
break;
case OPC2_32_RR_FTOUZ:
gen_helper_ftouz(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1]);
break;
default:
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}