diff options
Diffstat (limited to 'm68k_core_x86.c')
| -rw-r--r-- | m68k_core_x86.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/m68k_core_x86.c b/m68k_core_x86.c index bb3c702..f23c51d 100644 --- a/m68k_core_x86.c +++ b/m68k_core_x86.c @@ -1312,6 +1312,39 @@ void translate_m68k_cmp(m68k_options * opts, m68kinst * inst) translate_m68k_arith(opts, inst, N|Z|V|C, &src_op, &dst_op); } +void translate_m68k_tas(m68k_options *opts, m68kinst *inst) +{ + code_info *code = &opts->gen.code; + host_ea op; + translate_m68k_op(inst, &op, opts, 1); + if (op.mode == MODE_REG_DIRECT) { + cmp_ir(code, 0, op.base, SZ_B); + } else { + cmp_irdisp(code, 0, op.base, op.disp, SZ_B); + } + update_flags(opts, N|Z|V0|C0); + if (inst->dst.addr_mode == MODE_REG) { + cycles(&opts->gen, BUS); + if (op.mode == MODE_REG_DIRECT) { + bts_ir(code, 7, op.base, SZ_B); + } else { + bts_irdisp(code, 7, op.base, op.disp, SZ_B); + } + } else { + if (opts->gen.flags & M68K_OPT_BROKEN_READ_MODIFY) { + //2 cycles for processing + //4 for failed writeback + //4 for prefetch + cycles(&opts->gen, BUS * 2 + 2); + } else { + cycles(&opts->gen, 2); + bts_ir(code, 7, op.base, SZ_B); + m68k_save_result(inst, opts); + cycles(&opts->gen, BUS); + } + } +} + void op_r(code_info *code, m68kinst *inst, uint8_t dst, uint8_t size) { switch(inst->op) |