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target-tricore: Add div.f instruction

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Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <1457708597-3025-6-git-send-email-kbastian@mail.uni-paderborn.de>
This commit is contained in:
Bastian Koppelmann 2016-03-11 16:03:15 +01:00
parent daab3f7fa8
commit 446ee5b2a8
3 changed files with 30 additions and 0 deletions
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26
target-tricore/fpu_helper.c
View File

@ -132,3 +132,29 @@ uint32_t helper_fmul(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
return (uint32_t)f_result;
}
uint32_t helper_fdiv(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
{
uint32_t flags;
float32 arg1 = make_float32(r1);
float32 arg2 = make_float32(r2);
float32 f_result;
f_result = float32_div(arg1, arg2 , &env->fp_status);
flags = f_get_excp_flags(env);
if (flags) {
/* If the output is a NaN, but the inputs aren't,
we return a unique value. */
if ((flags & float_flag_invalid)
&& !float32_is_any_nan(arg1)
&& !float32_is_any_nan(arg2)) {
f_result = DIV_NAN;
}
f_update_psw_flags(env, flags);
} else {
env->FPU_FS = 0;
}
return (uint32_t)f_result;
}

1
target-tricore/helper.h
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@ -108,6 +108,7 @@ DEF_HELPER_1(unpack, i64, i32)
DEF_HELPER_3(fadd, i32, env, i32, i32)
DEF_HELPER_3(fsub, i32, env, i32, i32)
DEF_HELPER_3(fmul, i32, env, i32, i32)
DEF_HELPER_3(fdiv, i32, env, i32, 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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@ -6675,6 +6675,9 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx)
case OPC2_32_RR_MUL_F:
gen_helper_fmul(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
break;
case OPC2_32_RR_DIV_F:
gen_helper_fdiv(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
break;
default:
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}