m68k: fix subx mem, mem instruction
This patch fixes decrement of the pointers for subx mem, mem instructions. Without the patch pointers are decremented by OS_* constant value instead of retrieving the corresponding data size and using it as a decrement. Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180418064152.24606.71975.stgit@pasha-VirtualBox> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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@ -3166,11 +3166,11 @@ DISAS_INSN(subx_mem)
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opsize = insn_opsize(insn);
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addr_src = AREG(insn, 0);
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tcg_gen_subi_i32(addr_src, addr_src, opsize);
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tcg_gen_subi_i32(addr_src, addr_src, opsize_bytes(opsize));
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src = gen_load(s, opsize, addr_src, 1, IS_USER(s));
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addr_dest = AREG(insn, 9);
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tcg_gen_subi_i32(addr_dest, addr_dest, opsize);
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tcg_gen_subi_i32(addr_dest, addr_dest, opsize_bytes(opsize));
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dest = gen_load(s, opsize, addr_dest, 1, IS_USER(s));
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gen_subx(s, src, dest, opsize);
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