From patchwork Wed Aug 17 20:46:37 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [032/111] m68k: add linkl instruction Date: Wed, 17 Aug 2011 10:46:37 -0000 From: Bryce Lanham X-Patchwork-Id: 110469 Message-Id: <1313614076-28878-33-git-send-email-blanham@gmail.com> To: qemu-devel@nongnu.org Cc: Laurent Vivier From: Laurent Vivier This patch add support for link instruction with 32bit stack frame size Signed-off-by: Laurent Vivier --- target-m68k/translate.c | 20 ++++++++++++++++++-- 1 files changed, 18 insertions(+), 2 deletions(-) diff --git a/target-m68k/translate.c b/target-m68k/translate.c index 38be7ab..896e187 100644 --- a/target-m68k/translate.c +++ b/target-m68k/translate.c @@ -1744,8 +1744,23 @@ DISAS_INSN(link) TCGv reg; TCGv tmp; - offset = ldsw_code(s->pc); - s->pc += 2; + offset = read_im16(s); + reg = AREG(insn, 0); + tmp = tcg_temp_new(); + tcg_gen_subi_i32(tmp, QREG_SP, 4); + gen_store(s, OS_LONG, tmp, reg); + if ((insn & 7) != 7) + tcg_gen_mov_i32(reg, tmp); + tcg_gen_addi_i32(QREG_SP, tmp, offset); +} + +DISAS_INSN(linkl) +{ + int32_t offset; + TCGv reg; + TCGv tmp; + + offset = read_im32(s); reg = AREG(insn, 0); tmp = tcg_temp_new(); tcg_gen_subi_i32(tmp, QREG_SP, 4); @@ -3778,6 +3793,7 @@ void register_m68k_insns (CPUM68KState *env) INSN(not, 4600, ff00, M68000); INSN(undef, 46c0, ffc0, M68000); INSN(move_to_sr, 46c0, ffc0, CF_ISA_A); + INSN(linkl, 4808, fff8, M68000); INSN(pea, 4840, ffc0, CF_ISA_A); INSN(pea, 4840, ffc0, M68000); INSN(swap, 4840, fff8, CF_ISA_A);