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target-tricore: Add cmp.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: <1457708597-3025-7-git-send-email-kbastian@mail.uni-paderborn.de>
This commit is contained in:
Bastian Koppelmann 2016-03-11 16:03:16 +01:00
parent 446ee5b2a8
commit 743cd09dd7
3 changed files with 27 additions and 0 deletions
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23
target-tricore/fpu_helper.c
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@ -158,3 +158,26 @@ uint32_t helper_fdiv(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
return (uint32_t)f_result;
}
uint32_t helper_fcmp(CPUTriCoreState *env, uint32_t r1, uint32_t r2)
{
uint32_t result, flags;
float32 arg1 = make_float32(r1);
float32 arg2 = make_float32(r2);
set_flush_inputs_to_zero(0, &env->fp_status);
result = 1 << (float32_compare_quiet(arg1, arg2, &env->fp_status) + 1);
result |= f_is_denormal(arg1) << 4;
result |= f_is_denormal(arg2) << 5;
flags = f_get_excp_flags(env);
if (flags) {
f_update_psw_flags(env, flags);
} else {
env->FPU_FS = 0;
}
set_flush_inputs_to_zero(1, &env->fp_status);
return result;
}

1
target-tricore/helper.h
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@ -109,6 +109,7 @@ 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)
DEF_HELPER_3(fcmp, 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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@ -6678,6 +6678,9 @@ static void decode_rr_divide(CPUTriCoreState *env, DisasContext *ctx)
case OPC2_32_RR_DIV_F:
gen_helper_fdiv(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
break;
case OPC2_32_RR_CMP_F:
gen_helper_fcmp(cpu_gpr_d[r3], cpu_env, cpu_gpr_d[r1], cpu_gpr_d[r2]);
break;
default:
generate_trap(ctx, TRAPC_INSN_ERR, TIN2_IOPC);
}