Subversion Repositories ao486

`define CMD_BOUND #AUTOGEN_NEXT_CMD

`define CMDEX_BOUND_STEP_FIRST  4'd0

`define CMDEX_BOUND_STEP_LAST   4'd1

dec_ready_modregrm_one && decoder[7:0] == 8'h62

prefix_group_1_lock || `DEC_MODREGRM_IS_MOD_11

`CMD_BOUND

SET(dec_cmdex, `CMDEX_BOUND_STEP_FIRST);

SET(consume_modregrm_one);

SET(dec_is_complex);

`CMDEX_BOUND_STEP_FIRST

LAST(`CMDEX_BOUND_STEP_LAST);

IF(rd_cmd == `CMD_BOUND && rd_cmdex == `CMDEX_BOUND_STEP_FIRST);

    SET(rd_src_is_memory);

    IF(rd_mutex_busy_memory); SET(rd_waiting);

    ELSE();

        SET(read_virtual);

        IF(~(read_for_rd_ready)); SET(rd_waiting); ENDIF();

    ENDIF();

ENDIF();

IF(rd_cmd == `CMD_BOUND && rd_cmdex == `CMDEX_BOUND_STEP_LAST);

    SET(address_ea_buffer);

    SET(rd_dst_is_reg);

    SET(rd_src_is_memory);

    IF(rd_mutex_busy_memory); SET(rd_waiting);

    ELSE();

        SET(read_virtual); // special ea

        IF(~(read_for_rd_ready)); SET(rd_waiting); ENDIF();

    ENDIF();

ENDIF();

IF(exe_cmd == `CMD_BOUND && exe_cmdex == `CMDEX_BOUND_STEP_FIRST);

    SAVE(exe_buffer, src);

ENDIF();

wire signed [31:0] e_bound_min;

wire signed [31:0] e_bound_max;

wire signed [31:0] e_bound_dst;

assign e_bound_min = (exe_operand_16bit)? { {16{exe_buffer[15]}}, exe_buffer[15:0] } : exe_buffer;

assign e_bound_max = (exe_operand_16bit)? { {16{src[15]}},        src[15:0] }        : src;

assign e_bound_dst = (exe_operand_16bit)? { {16{dst[15]}},        dst[15:0] }        : dst;

assign exe_bound_fault = exe_cmd == `CMD_BOUND && exe_cmdex == `CMDEX_BOUND_STEP_LAST &&

    (e_bound_dst < e_bound_min || e_bound_dst > e_bound_max);

IF(exe_cmd == `CMD_BOUND && exe_cmdex == `CMDEX_BOUND_STEP_LAST);

   IF(exe_bound_fault); SET(exe_waiting); ENDIF();

ENDIF();

IF(wr_cmd == `CMD_BOUND && wr_cmdex == `CMDEX_BOUND_STEP_FIRST);

    SET(wr_not_finished);

ENDIF();