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target-arm: A64: Fix decoding of iss_sf in disas_ld_lit

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Fix the decoding of iss_sf in disas_ld_lit.
The SF (Sixty-Four) field in the ISS (Instruction Specific Syndrome)
is a bit that specifies the width of the register that the
instruction loads to.

If cleared it specifies 32 bits.
If set it specifies 64 bits.

Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Message-id: 1475230780-8669-1-git-send-email-edgar.iglesias@gmail.com
[PMM: tweaked phrasing per on-list discussion]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Edgar E. Iglesias 2016-10-04 13:28:10 +01:00 committed by Peter Maydell
parent 79b2ac8f28
commit 173ff58580
1 changed files with 1 additions and 1 deletions
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target-arm/translate-a64.c
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@ -2025,7 +2025,7 @@ static void disas_ld_lit(DisasContext *s, uint32_t insn)
do_fp_ld(s, rt, tcg_addr, size);
} else {
/* Only unsigned 32bit loads target 32bit registers. */
bool iss_sf = opc == 0 ? 32 : 64;
bool iss_sf = opc != 0;
do_gpr_ld(s, tcg_rt, tcg_addr, size, is_signed, false,
true, rt, iss_sf, false);