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target-m68k: add linkl
Backports commit c630e436c0ed3adc3a858c328119daf6d1b3357f from qemu
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59d6a1a744
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@ -1763,22 +1763,37 @@ DISAS_INSN(mull)
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gen_logic_cc(s, dest, OS_LONG);
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}
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DISAS_INSN(link)
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static void gen_link(DisasContext *s, uint16_t insn, int32_t offset)
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{
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TCGContext *tcg_ctx = s->uc->tcg_ctx;
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int16_t offset;
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TCGv reg;
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TCGv tmp;
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offset = cpu_ldsw_code(env, s->pc);
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s->pc += 2;
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reg = AREG(insn, 0);
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tmp = tcg_temp_new(tcg_ctx);
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tcg_gen_subi_i32(tcg_ctx, tmp, QREG_SP, 4);
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gen_store(s, OS_LONG, tmp, reg);
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if ((insn & 7) != 7)
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if ((insn & 7) != 7) {
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tcg_gen_mov_i32(tcg_ctx, reg, tmp);
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}
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tcg_gen_addi_i32(tcg_ctx, QREG_SP, tmp, offset);
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tcg_temp_free(tcg_ctx, tmp);
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}
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DISAS_INSN(link)
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{
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int16_t offset;
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offset = read_im16(env, s);
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gen_link(s, insn, offset);
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}
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DISAS_INSN(linkl)
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{
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int32_t offset;
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offset = read_im32(env, s);
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gen_link(s, insn, offset);
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}
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DISAS_INSN(unlk)
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@ -3136,6 +3151,7 @@ void register_m68k_insns (CPUM68KState *env)
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INSN(not, 4600, ff00, M68000);
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INSN(undef, 46c0, ffc0, M68000);
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INSN(move_to_sr, 46c0, ffc0, CF_ISA_A);
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INSN(linkl, 4808, fff8, M68000);
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BASE(pea, 4840, ffc0);
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BASE(swap, 4840, fff8);
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INSN(bkpt, 4848, fff8, BKPT);
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