From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47880) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay3Da-0005Bd-J0 for qemu-devel@nongnu.org; Wed, 04 May 2016 16:16:28 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ay3DO-0004ox-SM for qemu-devel@nongnu.org; Wed, 04 May 2016 16:16:17 -0400 Received: from smtp1-g21.free.fr ([212.27.42.1]:37375) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ay3DO-0004hu-LB for qemu-devel@nongnu.org; Wed, 04 May 2016 16:16:10 -0400 From: Laurent Vivier Date: Wed, 4 May 2016 22:12:10 +0200 Message-Id: <1462392752-17703-31-git-send-email-laurent@vivier.eu> In-Reply-To: <1462392752-17703-1-git-send-email-laurent@vivier.eu> References: <1462392752-17703-1-git-send-email-laurent@vivier.eu> Subject: [Qemu-devel] [PATCH 30/52] target-m68k: add scc/dbcc List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: gerg@uclinux.org, schwab@linux-m68k.org, agraf@suse.de, rth@twiddle.net, Laurent Vivier Signed-off-by: Laurent Vivier --- target-m68k/translate.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/target-m68k/translate.c b/target-m68k/translate.c index 5914185..cd656fe 100644 --- a/target-m68k/translate.c +++ b/target-m68k/translate.c @@ -1096,6 +1096,49 @@ static void gen_jmp_tb(DisasContext *s, int n, uint32_t dest) s->is_jmp = DISAS_TB_JUMP; } +DISAS_INSN(scc_mem) +{ + TCGLabel *l1; + int cond; + TCGv dest; + + l1 = gen_new_label(); + cond = (insn >> 8) & 0xf; + dest = tcg_temp_local_new(); + tcg_gen_movi_i32(dest, 0); + gen_jmpcc(s, cond ^ 1, l1); + tcg_gen_movi_i32(dest, 0xff); + gen_set_label(l1); + DEST_EA(env, insn, OS_BYTE, dest, NULL); + tcg_temp_free(dest); +} + +DISAS_INSN(dbcc) +{ + TCGLabel *l1; + TCGv reg; + TCGv tmp; + int16_t offset; + uint32_t base; + + reg = DREG(insn, 0); + base = s->pc; + offset = (int16_t)read_im16(env, s); + l1 = gen_new_label(); + gen_jmpcc(s, (insn >> 8) & 0xf, l1); + + tmp = tcg_temp_new(); + tcg_gen_ext16s_i32(tmp, reg); + tcg_gen_addi_i32(tmp, tmp, -1); + gen_partset_reg(OS_WORD, reg, tmp); + tcg_gen_brcondi_i32(TCG_COND_EQ, tmp, -1, l1); + update_cc_op(s); + gen_jmp_tb(s, 1, base + offset); + gen_set_label(l1); + update_cc_op(s); + gen_jmp_tb(s, 0, s->pc); +} + DISAS_INSN(undef_mac) { gen_exception(s, s->pc - 2, EXCP_LINEA); @@ -3292,6 +3335,9 @@ void register_m68k_insns (CPUM68KState *env) INSN(addsubq, 5000, f080, M68000); INSN(addsubq, 5080, f0c0, M68000); INSN(scc, 50c0, f0f8, CF_ISA_A); + INSN(scc_mem, 50c0, f0c0, M68000); + INSN(scc, 50c0, f0f8, M68000); + INSN(dbcc, 50c8, f0f8, M68000); INSN(addsubq, 5080, f1c0, CF_ISA_A); INSN(tpf, 51f8, fff8, CF_ISA_A); -- 2.5.5