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target/sparc: Fix RETURN

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Perform window restore before pc update. Required in order
to recognize any window underflow trap with the current pc.

Fixes: 86b82fe021 ("target/sparc: Move JMPL, RETT, RETURN to decodetree")
Reported-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Acked-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-11-08 12:47:00 -08:00
parent e2faabee78
commit 0dfae4f948
1 changed files with 1 additions and 1 deletions
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2
target/sparc/translate.c
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@ -4096,12 +4096,12 @@ TRANS(RETT, 32, do_add_special, a, do_rett)
static bool do_return(DisasContext *dc, int rd, TCGv src)
{
gen_check_align(dc, src, 3);
gen_helper_restore(tcg_env);
gen_mov_pc_npc(dc);
tcg_gen_mov_tl(cpu_npc, src);
gen_address_mask(dc, cpu_npc);
gen_helper_restore(tcg_env);
dc->npc = DYNAMIC_PC_LOOKUP;
return true;
}