Commit b64d2e57 authored by Artyom Tarasenko's avatar Artyom Tarasenko Committed by Mark Cave-Ayland
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target-sparc: fix register corruption in ldstub if there is no write permission 



Signed-off-by: default avatarArtyom Tarasenko <atar4qemu@gmail.com>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
Signed-off-by: default avatarMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
parent a01aef5d

target-sparc/translate.c

+4 −1
Original line number Diff line number Diff line
@@ -4679,12 +4679,15 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn) 
                case 0xd:       /* ldstub -- XXX: should be atomically */

                    {

                        TCGv r_const;

                        TCGv tmp = tcg_temp_new();



                        gen_address_mask(dc, cpu_addr);

                        tcg_gen_qemu_ld8u(cpu_val, cpu_addr, dc->mem_idx);

                        tcg_gen_qemu_ld8u(tmp, cpu_addr, dc->mem_idx);

                        r_const = tcg_const_tl(0xff);

                        tcg_gen_qemu_st8(r_const, cpu_addr, dc->mem_idx);

                        tcg_gen_mov_tl(cpu_val, tmp);

                        tcg_temp_free(r_const);

                        tcg_temp_free(tmp);

                    }

                    break;

                case 0x0f: