96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
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/*====================================================================
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filename: gdsp_interpreter.h
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project: GCemu
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created: 2004-6-18
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mail: duddie@walla.com
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Copyright (c) 2005 Duddie & Tratax
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (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 _GDSP_INTERPRETER_H
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#define _GDSP_INTERPRETER_H
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#include "Globals.h"
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#define DSP_IRAM_SIZE (0x1000)
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#define DSP_IRAM_MASK (0x0fff)
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#define DSP_IROM_SIZE (0x1000)
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#define DSP_IROM_MASK (0x0fff)
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#define DSP_DRAM_SIZE (0x1000)
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#define DSP_DRAM_MASK (0x0fff)
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#define DSP_DROM_SIZE (0x1000)
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#define DSP_DROM_MASK (0x0fff)
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#define DSP_COEF_SIZE (0x1000)
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#define DSP_COEF_MASK (0x0fff)
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#define DSP_RESET_VECTOR (0x8000)
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#define DSP_STACK_DEPTH 0x20
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#define DSP_STACK_MASK 0x1f
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struct SDSP
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{
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static uint16 r[32];
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static uint16 pc;
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static uint16 err_pc;
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static uint16* iram;
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static uint16* dram;
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static uint16* irom;
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static uint16* drom;
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static uint16* coef;
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static uint8* cpu_ram;
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static uint16 cr;
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static uint8 reg_stack_ptr[4];
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// lets make stack depth to 32 for now
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static uint16 reg_stack[4][DSP_STACK_DEPTH];
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static void (* irq_request)(void);
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// for debugger only
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static uint32 iram_crc;
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static uint64 step_counter;
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static bool exception_in_progress_hack;
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};
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extern SDSP g_dsp;
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void gdsp_init(void);
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void gdsp_reset(void);
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bool gdsp_load_rom(char* fname);
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bool gdsp_load_coef(char* fname);
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// steps through DSP code, returns false if error occured
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void gdsp_step(void);
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void gdsp_loop_step();
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bool gdsp_run(void);
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bool gdsp_runx(uint16 cnt);
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void gdsp_stop(void);
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void gdsp_write_cr(uint16 val);
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uint16 gdsp_read_cr(void);
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uint16* gdsp_get_iram(void);
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uint16* gdsp_get_irom(void);
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uint16* gdsp_get_dram(void);
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uint16* gdsp_get_drom(void);
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#endif
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