Subversion Repositories ao486

<defines>
`define CMD_PUSHA       #AUTOGEN_NEXT_CMD
    
`define CMDEX_PUSHA_STEP_0  4'd0
`define CMDEX_PUSHA_STEP_1  4'd1
`define CMDEX_PUSHA_STEP_2  4'd2
`define CMDEX_PUSHA_STEP_3  4'd3
`define CMDEX_PUSHA_STEP_4  4'd4
`define CMDEX_PUSHA_STEP_5  4'd5
`define CMDEX_PUSHA_STEP_6  4'd6
`define CMDEX_PUSHA_STEP_7  4'd7
</defines>

<decode>
dec_ready_one && decoder[7:0] == 8'h60
`CMD_PUSHA
SET(dec_cmdex, `CMDEX_PUSHA_STEP_0);
SET(consume_one);
SET(dec_is_complex);
</decode>

<microcode>
IF(mc_cmd == `CMD_PUSHA && mc_step < 6'd7);
    DIRECT(mc_cmd, mc_step[3:0]);
ENDIF();

IF(mc_cmd == `CMD_PUSHA && mc_step == 6'd7);
    LAST(`CMDEX_PUSHA_STEP_7);
ENDIF();
</microcode>

<read>
IF(rd_cmd == `CMD_PUSHA);
    
    SET(rd_src_is_cmdex);
        
    SET(rd_req_esp);
    SET(rd_req_memory);

    IF((rd_cmdex == `CMDEX_PUSHA_STEP_0 && rd_mutex_busy_eax) || (rd_cmdex == `CMDEX_PUSHA_STEP_1 && rd_mutex_busy_ecx) || (rd_cmdex == `CMDEX_PUSHA_STEP_2 && rd_mutex_busy_edx)); SET(rd_waiting); ENDIF();
ENDIF();
</read>

<execute>
IF(exe_cmd == `CMD_PUSHA);
    
    IF(exe_cmdex[2:0] == 3'd4);
        SET(exe_result_push, wr_esp_prev);
    ELSE();
        SET(exe_result_push, src);
    ENDIF();

    IF(exe_mutex_current[`MUTEX_ESP_BIT]); SET(exe_waiting); ENDIF();
ENDIF();
</execute>

<write>
IF(wr_cmd == `CMD_PUSHA);

    SET(wr_push_ss_fault_check);
    SET(wr_one_cycle_wait);
    
    IF(~(write_for_wr_ready)); SET(wr_waiting); ENDIF();
    
    IF(wr_cmdex[2:0] == 3'd0); SET(wr_make_esp_speculative); ENDIF();
    
    IF(wr_cmdex[2:0] < 3'd7);
        SET(wr_not_finished);
    ENDIF();
    
    IF(~(wr_push_ss_fault));
        SET(write_stack_virtual);
        SAVE(esp, wr_stack_esp);
    ENDIF();
    
    IF(wr_cmdex[2:0] == 3'd7 && write_for_wr_ready && ~(wr_push_ss_fault));
        SET(wr_make_esp_commit);
    ENDIF();
    
ENDIF();
</write>