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target/tricore: Implement hptof insn

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Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1667
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-ID: <20230828112651.522058-8-kbastian@mail.uni-paderborn.de>
This commit is contained in:
Bastian Koppelmann 2023-08-28 13:26:47 +02:00
parent 815061b9da
commit 5e0e06d9a2
6 changed files with 58 additions and 0 deletions
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36
target/tricore/fpu_helper.c
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@ -373,6 +373,42 @@ uint32_t helper_ftoi(CPUTriCoreState *env, uint32_t arg)
return (uint32_t)result;
}
uint32_t helper_hptof(CPUTriCoreState *env, uint32_t arg)
{
float16 f_arg = make_float16(arg);
uint32_t result = 0;
int32_t flags = 0;
/*
* if we have any NAN we need to move the top 2 and lower 8 input mantissa
* bits to the top 2 and lower 8 output mantissa bits respectively.
* Softfloat on the other hand uses the top 10 mantissa bits.
*/
if (float16_is_any_nan(f_arg)) {
if (float16_is_signaling_nan(f_arg, &env->fp_status)) {
flags |= float_flag_invalid;
}
result = 0;
result = float32_set_sign(result, f_arg >> 15);
result = deposit32(result, 23, 8, 0xff);
result = deposit32(result, 21, 2, extract32(f_arg, 8, 2));
result = deposit32(result, 0, 8, extract32(f_arg, 0, 8));
} else {
set_flush_inputs_to_zero(0, &env->fp_status);
result = float16_to_float32(f_arg, true, &env->fp_status);
set_flush_inputs_to_zero(1, &env->fp_status);
flags = f_get_excp_flags(env);
}
if (flags) {
f_update_psw_flags(env, flags);
} else {
env->FPU_FS = 0;
}
return result;
}
uint32_t helper_ftohp(CPUTriCoreState *env, uint32_t arg)
{
float32 f_arg = make_float32(arg);