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target-arm/translate-a64.c: Use extract32 in disas_ldst_reg_imm9 

Use extract32 instead of open coding the bit masking when decoding
is_signed and is_extended. This streamlines the decoding with some
of the other ldst variants.

No functional change.

Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1461931684-1867-6-git-send-email-edgar.iglesias@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
master
Edgar E. Iglesias 2016-05-12 13:22:27 +01:00 committed by Peter Maydell
parent 094d028a79
commit 026a19c312
1 changed files with 2 additions and 2 deletions
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4
target-arm/translate-a64.c
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@ -2128,8 +2128,8 @@ static void disas_ldst_reg_imm9(DisasContext *s, uint32_t insn)
return;
}
is_store = (opc == 0);
is_signed = opc & (1<<1);
is_extended = (size < 3) && (opc & 1);
is_signed = extract32(opc, 1, 1);
is_extended = (size < 3) && extract32(opc, 0, 1);
}
switch (idx) {