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[/] [ao486/] [trunk/] [rtl/] [ao486/] [commands/] [CMD_PUSHA.txt] - Rev 2
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<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>