126 lines
2.5 KiB
C
126 lines
2.5 KiB
C
/* Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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Copyright (C) 1998, Cygnus Solutions
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _ENGINE_C_
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#define _ENGINE_C_
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#include "sim-inline.c"
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#include "sim-main.h"
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#include "itable.h"
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#include "idecode.h"
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#include "semantics.h"
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#include "icache.h"
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#include "engine.h"
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#include "support.h"
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#include "sim-assert.h"
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#include "hardware.h"
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enum {
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/* greater or equal to zero => table */
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function_entry = -1,
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boolean_entry = -2,
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};
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typedef struct _idecode_table_entry {
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int shift;
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unsigned32 mask;
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unsigned32 value;
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void *function_or_table;
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} idecode_table_entry;
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INLINE_ENGINE\
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(void) engine_run
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(SIM_DESC sd,
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int next_cpu_nr,
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int siggnal)
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{
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sim_cpu *processor = NULL;
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instruction_address cia;
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int current_cpu = next_cpu_nr;
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instruction_word instruction_0;
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/* Hard coded main loop. Not pretty, but should work. */
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ASSERT(current_cpu >= 0 && current_cpu < NUMBER_CPUS);
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cia = CPU_CIA (0); /* Only the 5900 uses this. */
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processor = STATE_CPU (sd, 0); /* Only the 5900 uses this. */
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switch(current_cpu)
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{
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case 0:
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goto cpu_0;
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case 1:
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goto cpu_1;
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case 2:
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goto cpu_2;
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case 3:
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goto cpu_3;
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case 4:
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goto cpu_4;
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}
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while (1)
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{
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cpu_0:
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cia = CPU_CIA (processor);
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instruction_0 = IMEM (cia);
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#if defined (ENGINE_ISSUE_PREFIX_HOOK)
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ENGINE_ISSUE_PREFIX_HOOK();
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#endif
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cia = idecode_issue(sd, instruction_0, cia);
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#if defined (ENGINE_ISSUE_POSTFIX_HOOK)
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ENGINE_ISSUE_POSTFIX_HOOK();
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#endif
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/* Update the instruction address */
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CPU_CIA (processor) = cia;
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cpu_1:
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pke0_issue();
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cpu_2:
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pke1_issue();
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cpu_3:
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vu0_issue();
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cpu_4:
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vu1_issue();
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events:
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/* process any events */
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if (sim_events_tick (sd))
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{
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sim_events_process (sd);
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}
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}
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}
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#endif /* _ENGINE_C_*/
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