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target/arm: Use ror32 instead of open-coding the operation
The helper function is more documentary, and also already handles the case of rotate by zero. Backports commit dd861b3f29be97a9e3cdb9769dcbc0c7d7825185 from qemu
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@ -8147,8 +8147,7 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn)
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/* CPSR = immediate */
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val = insn & 0xff;
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shift = ((insn >> 8) & 0xf) * 2;
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if (shift)
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val = (val >> shift) | (val << (32 - shift));
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val = ror32(val, shift);
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i = ((insn & (1 << 22)) != 0);
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if (gen_set_psr_im(s, msr_mask(s, (insn >> 16) & 0xf, i),
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i, val)) {
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@ -8411,9 +8410,7 @@ static void disas_arm_insn(DisasContext *s, unsigned int insn)
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/* immediate operand */
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val = insn & 0xff;
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shift = ((insn >> 8) & 0xf) * 2;
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if (shift) {
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val = (val >> shift) | (val << (32 - shift));
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}
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val = ror32(val, shift);
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tmp2 = tcg_temp_new_i32(tcg_ctx);
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tcg_gen_movi_i32(tcg_ctx, tmp2, val);
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if (logic_cc && shift) {
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