Commit 355d4d1c authored by Pavel Dovgalyuk's avatar Pavel Dovgalyuk Committed by Laurent Vivier
Browse files

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: default avatarPavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
Reviewed-by: default avatarLaurent Vivier <laurent@vivier.eu>
Message-Id: <20180418064152.24606.71975.stgit@pasha-VirtualBox>
Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
parent c2c76850

target/m68k/translate.c

+2 −2
Original line number Diff line number Diff line
@@ -3166,11 +3166,11 @@ DISAS_INSN(subx_mem) 
    opsize = insn_opsize(insn);



    addr_src = AREG(insn, 0);

    tcg_gen_subi_i32(addr_src, addr_src, opsize);

    tcg_gen_subi_i32(addr_src, addr_src, opsize_bytes(opsize));

    src = gen_load(s, opsize, addr_src, 1, IS_USER(s));



    addr_dest = AREG(insn, 9);

    tcg_gen_subi_i32(addr_dest, addr_dest, opsize);

    tcg_gen_subi_i32(addr_dest, addr_dest, opsize_bytes(opsize));

    dest = gen_load(s, opsize, addr_dest, 1, IS_USER(s));



    gen_subx(s, src, dest, opsize);