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target/arm: Simplify aa32 DISAS_WFI

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The length of the previous insn may be computed from
the difference of start and end addresses.
Use tcg_constant_i32 while we're at it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2022-04-17 10:43:42 -07:00 committed by Peter Maydell
parent 099d1c2088
commit c89a9d139b
1 changed files with 4 additions and 8 deletions
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12
target/arm/translate.c
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@ -9870,18 +9870,14 @@ static void arm_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
/* nothing more to generate */
break;
case DISAS_WFI:
{
TCGv_i32 tmp = tcg_const_i32((dc->thumb &&
!(dc->insn & (1U << 31))) ? 2 : 4);
gen_helper_wfi(cpu_env, tmp);
tcg_temp_free_i32(tmp);
/* The helper doesn't necessarily throw an exception, but we
gen_helper_wfi(cpu_env,
tcg_constant_i32(dc->base.pc_next - dc->pc_curr));
/*
* The helper doesn't necessarily throw an exception, but we
* must go back to the main loop to check for interrupts anyway.
*/
tcg_gen_exit_tb(NULL, 0);
break;
}
case DISAS_WFE:
gen_helper_wfe(cpu_env);
break;