forked from luck/tmp_suning_uos_patched
s390/bpf,jit: add support MOD instruction
Add support for MOD operation for s390's JIT. Same as280050cc
"x86 bpf_jit: support MOD operation" for x86 which adds JIT support for the generic new MOD operation introduced withb6069a9570
"filter: add MOD operation". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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@ -341,6 +341,27 @@ static int bpf_jit_insn(struct bpf_jit *jit, struct sock_filter *filter,
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/* lr %r5,%r4 */
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EMIT2(0x1854);
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break;
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case BPF_S_ALU_MOD_X: /* A %= X */
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jit->seen |= SEEN_XREG | SEEN_RET0;
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/* ltr %r12,%r12 */
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EMIT2(0x12cc);
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/* jz <ret0> */
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EMIT4_PCREL(0xa7840000, (jit->ret0_ip - jit->prg));
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/* lhi %r4,0 */
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EMIT4(0xa7480000);
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/* dr %r4,%r12 */
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EMIT2(0x1d4c);
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/* lr %r5,%r4 */
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EMIT2(0x1854);
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break;
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case BPF_S_ALU_MOD_K: /* A %= K */
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/* lhi %r4,0 */
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EMIT4(0xa7480000);
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/* d %r4,<d(K)>(%r13) */
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EMIT4_DISP(0x5d40d000, EMIT_CONST(K));
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/* lr %r5,%r4 */
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EMIT2(0x1854);
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break;
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case BPF_S_ALU_AND_X: /* A &= X */
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jit->seen |= SEEN_XREG;
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/* nr %r5,%r12 */
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