[mupen64plus-pandora.git] / source / mupen64plus-core / src / r4300 / interupt.c

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 *   Mupen64plus - interupt.c                                              *
 *   Mupen64Plus homepage: http://code.google.com/p/mupen64plus/           *
 *   Copyright (C) 2002 Hacktarux                                          *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.          *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

#include <stdlib.h>

#include <SDL.h>

#define M64P_CORE_PROTOTYPES 1
#include "api/m64p_types.h"
#include "api/callbacks.h"
#include "api/m64p_vidext.h"
#include "api/vidext.h"
#include "memory/memory.h"
#include "main/rom.h"
#include "main/main.h"
#include "main/savestates.h"
#include "main/cheat.h"
#include "osd/osd.h"
#include "plugin/plugin.h"

#include "interupt.h"
#include "r4300.h"
#include "macros.h"
#include "exception.h"
#include "reset.h"
#include "new_dynarec/new_dynarec.h"

#ifdef WITH_LIRC
#include "main/lirc.h"
#endif

unsigned int next_vi;
int vi_field=0;
static int vi_counter=0;

int interupt_unsafe_state = 0;

typedef struct _interupt_queue
{
   int type;
   unsigned int count;
   struct _interupt_queue *next;
} interupt_queue;

static interupt_queue *q = NULL;

static void clear_queue(void)
{
    while(q != NULL)
    {
        interupt_queue *aux = q->next;
        free(q);
        q = aux;
    }
}

/*static void print_queue(void)
{
    interupt_queue *aux;
    //if (Count < 0x7000000) return;
    DebugMessage(M64MSG_INFO, "------------------ 0x%x", (unsigned int)Count);
    aux = q;
    while (aux != NULL)
    {
        DebugMessage(M64MSG_INFO, "Count:%x, %x", (unsigned int)aux->count, aux->type);
        aux = aux->next;
    }
}*/

static int SPECIAL_done = 0;

static int before_event(unsigned int evt1, unsigned int evt2, int type2)
{
    if(evt1 - Count < 0x80000000)
    {
        if(evt2 - Count < 0x80000000)
        {
            if((evt1 - Count) < (evt2 - Count)) return 1;
            else return 0;
        }
        else
        {
            if((Count - evt2) < 0x10000000)
            {
                switch(type2)
                {
                    case SPECIAL_INT:
                        if(SPECIAL_done) return 1;
                        else return 0;
                        break;
                    default:
                        return 0;
                }
            }
            else return 1;
        }
    }
    else return 0;
}

void add_interupt_event(int type, unsigned int delay)
{
    unsigned int count = Count + delay/**2*/;
    int special = 0;
    interupt_queue *aux = q;
   
    if(type == SPECIAL_INT /*|| type == COMPARE_INT*/) special = 1;
    if(Count > 0x80000000) SPECIAL_done = 0;
   
    if (get_event(type)) {
        DebugMessage(M64MSG_WARNING, "two events of type 0x%x in interrupt queue", type);
    }
   
    if (q == NULL)
    {
        q = (interupt_queue *) malloc(sizeof(interupt_queue));
        q->next = NULL;
        q->count = count;
        q->type = type;
        next_interupt = q->count;
        //print_queue();
        return;
    }
   
    if(before_event(count, q->count, q->type) && !special)
    {
        q = (interupt_queue *) malloc(sizeof(interupt_queue));
        q->next = aux;
        q->count = count;
        q->type = type;
        next_interupt = q->count;
        //print_queue();
        return;
    }
   
    while (aux->next != NULL && (!before_event(count, aux->next->count, aux->next->type) || special))
        aux = aux->next;
   
    if (aux->next == NULL)
    {
        aux->next = (interupt_queue *) malloc(sizeof(interupt_queue));
        aux = aux->next;
        aux->next = NULL;
        aux->count = count;
        aux->type = type;
    }
    else
    {
        interupt_queue *aux2;
        if (type != SPECIAL_INT)
            while(aux->next != NULL && aux->next->count == count)
                aux = aux->next;
        aux2 = aux->next;
        aux->next = (interupt_queue *) malloc(sizeof(interupt_queue));
        aux = aux->next;
        aux->next = aux2;
        aux->count = count;
        aux->type = type;
    }
}

void add_interupt_event_count(int type, unsigned int count)
{
    add_interupt_event(type, (count - Count)/*/2*/);
}

static void remove_interupt_event(void)
{
    interupt_queue *aux = q->next;
    if(q->type == SPECIAL_INT) SPECIAL_done = 1;
    free(q);
    q = aux;
    if (q != NULL && (q->count > Count || (Count - q->count) < 0x80000000))
        next_interupt = q->count;
    else
        next_interupt = 0;
}

unsigned int get_event(int type)
{
    interupt_queue *aux = q;
    if (q == NULL) return 0;
    if (q->type == type)
        return q->count;
    while (aux->next != NULL && aux->next->type != type)
        aux = aux->next;
    if (aux->next != NULL)
        return aux->next->count;
    return 0;
}

int get_next_event_type(void)
{
    if (q == NULL) return 0;
    return q->type;
}

void remove_event(int type)
{
    interupt_queue *aux = q;
    if (q == NULL) return;
    if (q->type == type)
    {
        aux = aux->next;
        free(q);
        q = aux;
        return;
    }
    while (aux->next != NULL && aux->next->type != type)
        aux = aux->next;
    if (aux->next != NULL) // it's a type int
    {
        interupt_queue *aux2 = aux->next->next;
        free(aux->next);
        aux->next = aux2;
    }
}

void translate_event_queue(unsigned int base)
{
    interupt_queue *aux;
    remove_event(COMPARE_INT);
    remove_event(SPECIAL_INT);
    aux=q;
    while (aux != NULL)
    {
        aux->count = (aux->count - Count)+base;
        aux = aux->next;
    }
    add_interupt_event_count(COMPARE_INT, Compare);
    add_interupt_event_count(SPECIAL_INT, 0);
}

int save_eventqueue_infos(char *buf)
{
    int len = 0;
    interupt_queue *aux = q;
    if (q == NULL)
    {
        *((unsigned int*)&buf[0]) = 0xFFFFFFFF;
        return 4;
    }
    while (aux != NULL)
    {
        memcpy(buf+len  , &aux->type , 4);
        memcpy(buf+len+4, &aux->count, 4);
        len += 8;
        aux = aux->next;
    }
    *((unsigned int*)&buf[len]) = 0xFFFFFFFF;
    return len+4;
}

void load_eventqueue_infos(char *buf)
{
    int len = 0;
    clear_queue();
    while (*((unsigned int*)&buf[len]) != 0xFFFFFFFF)
    {
        int type = *((unsigned int*)&buf[len]);
        unsigned int count = *((unsigned int*)&buf[len+4]);
        add_interupt_event_count(type, count);
        len += 8;
    }
}

void init_interupt(void)
{
    SPECIAL_done = 1;
    next_vi = next_interupt = 5000;
    vi_register.vi_delay = next_vi;
    vi_field = 0;
    clear_queue();
    add_interupt_event_count(VI_INT, next_vi);
    add_interupt_event_count(SPECIAL_INT, 0);
}

void check_interupt(void)
{
    if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
        Cause = (Cause | 0x400) & 0xFFFFFF83;
    else
        Cause &= ~0x400;
    if ((Status & 7) != 1) return;
    if (Status & Cause & 0xFF00)
    {
        if(q == NULL)
        {
            q = (interupt_queue *) malloc(sizeof(interupt_queue));
            q->next = NULL;
            q->count = Count;
            q->type = CHECK_INT;
        }
        else
        {
            interupt_queue* aux = (interupt_queue *) malloc(sizeof(interupt_queue));
            aux->next = q;
            aux->count = Count;
            aux->type = CHECK_INT;
            q = aux;
        }
        next_interupt = Count;
    }
}

void gen_interupt(void)
{
    if (stop == 1)
    {
        vi_counter = 0; // debug
        dyna_stop();
    }

    if (!interupt_unsafe_state)
    {
        if (savestates_get_job() == savestates_job_load)
        {
            savestates_load();
            return;
        }

        if (reset_hard_job)
        {
            reset_hard();
            reset_hard_job = 0;
            return;
        }
    }
   
    if (skip_jump)
    {
        unsigned int dest = skip_jump;
        skip_jump = 0;

        if (q->count > Count || (Count - q->count) < 0x80000000)
            next_interupt = q->count;
        else
            next_interupt = 0;
        
        last_addr = dest;
        generic_jump_to(dest);
        return;
    } 

    switch(q->type)
    {
        case SPECIAL_INT:
            if (Count > 0x10000000) return;
            remove_interupt_event();
            add_interupt_event_count(SPECIAL_INT, 0);
            return;
            break;
        case VI_INT:
            if(vi_counter < 60)
            {
                if (vi_counter == 0)
                    cheat_apply_cheats(ENTRY_BOOT);
                vi_counter++;
            }
            else
            {
                cheat_apply_cheats(ENTRY_VI);
            }
            gfx.updateScreen();
#ifdef WITH_LIRC
            lircCheckInput();
#endif
            SDL_PumpEvents();

            refresh_stat();

            // if paused, poll for input events
            if(rompause)
            {
                osd_render();  // draw Paused message in case gfx.updateScreen didn't do it
                VidExt_GL_SwapBuffers();
                while(rompause)
                {
                    SDL_Delay(10);
                    SDL_PumpEvents();
#ifdef WITH_LIRC
                    lircCheckInput();
#endif //WITH_LIRC
                }
            }

            new_vi();
            if (vi_register.vi_v_sync == 0) vi_register.vi_delay = 500000;
            else vi_register.vi_delay = ((vi_register.vi_v_sync + 1)*1500);
            next_vi += vi_register.vi_delay;
            if (vi_register.vi_status&0x40) vi_field=1-vi_field;
            else vi_field=0;

            remove_interupt_event();
            add_interupt_event_count(VI_INT, next_vi);
    
            MI_register.mi_intr_reg |= 0x08;
            if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                Cause = (Cause | 0x400) & 0xFFFFFF83;
            else
                return;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;
    
        case COMPARE_INT:
            remove_interupt_event();
            Count+=2;
            add_interupt_event_count(COMPARE_INT, Compare);
            Count-=2;
    
            Cause = (Cause | 0x8000) & 0xFFFFFF83;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;
    
        case CHECK_INT:
            remove_interupt_event();
            break;
    
        case SI_INT:
#ifdef WITH_LIRC
            lircCheckInput();
#endif //WITH_LIRC
            SDL_PumpEvents();
            PIF_RAMb[0x3F] = 0x0;
            remove_interupt_event();
            MI_register.mi_intr_reg |= 0x02;
            si_register.si_stat |= 0x1000;
            if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                Cause = (Cause | 0x400) & 0xFFFFFF83;
            else
                return;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;
    
        case PI_INT:
            remove_interupt_event();
            MI_register.mi_intr_reg |= 0x10;
            pi_register.read_pi_status_reg &= ~3;
            if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                Cause = (Cause | 0x400) & 0xFFFFFF83;
            else
                return;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;
    
        case AI_INT:
            if (ai_register.ai_status & 0x80000000) // full
            {
                unsigned int ai_event = get_event(AI_INT);
                remove_interupt_event();
                ai_register.ai_status &= ~0x80000000;
                ai_register.current_delay = ai_register.next_delay;
                ai_register.current_len = ai_register.next_len;
                add_interupt_event_count(AI_INT, ai_event+ai_register.next_delay);
         
                MI_register.mi_intr_reg |= 0x04;
                if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                    Cause = (Cause | 0x400) & 0xFFFFFF83;
                else
                    return;
                if ((Status & 7) != 1) return;
                if (!(Status & Cause & 0xFF00)) return;
            }
            else
            {
                remove_interupt_event();
                ai_register.ai_status &= ~0x40000000;

                //-------
                MI_register.mi_intr_reg |= 0x04;
                if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                    Cause = (Cause | 0x400) & 0xFFFFFF83;
                else
                    return;
                if ((Status & 7) != 1) return;
                if (!(Status & Cause & 0xFF00)) return;
            }
            break;

        case SP_INT:
            remove_interupt_event();
            sp_register.sp_status_reg |= 0x203;
            // sp_register.sp_status_reg |= 0x303;
    
            if (!(sp_register.sp_status_reg & 0x40)) return; // !intr_on_break
            MI_register.mi_intr_reg |= 0x01;
            if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                Cause = (Cause | 0x400) & 0xFFFFFF83;
            else
                return;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;
    
        case DP_INT:
            remove_interupt_event();
            dpc_register.dpc_status &= ~2;
            dpc_register.dpc_status |= 0x81;
            MI_register.mi_intr_reg |= 0x20;
            if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
                Cause = (Cause | 0x400) & 0xFFFFFF83;
            else
                return;
            if ((Status & 7) != 1) return;
            if (!(Status & Cause & 0xFF00)) return;
            break;

        case HW2_INT:
            // Hardware Interrupt 2 -- remove interrupt event from queue
            remove_interupt_event();
            // setup r4300 Status flags: reset TS, and SR, set IM2
            Status = (Status & ~0x00380000) | 0x1000;
            Cause = (Cause | 0x1000) & 0xFFFFFF83;
            /* the exception_general() call below will jump to the interrupt vector (0x80000180) and setup the
             * interpreter or dynarec
             */
            break;

        case NMI_INT:
            // Non Maskable Interrupt -- remove interrupt event from queue
            remove_interupt_event();
            // setup r4300 Status flags: reset TS and SR, set BEV, ERL, and SR
            Status = (Status & ~0x00380000) | 0x00500004;
            Cause  = 0x00000000;
            // simulate the soft reset code which would run from the PIF ROM
            r4300_reset_soft();
            // clear all interrupts, reset interrupt counters back to 0
            Count = 0;
            vi_counter = 0;
            init_interupt();
            // clear the audio status register so that subsequent write_ai() calls will work properly
            ai_register.ai_status = 0;
            // set ErrorEPC with the last instruction address
            ErrorEPC = PC->addr;
            // reset the r4300 internal state
            if (r4300emu != CORE_PURE_INTERPRETER)
            {
                // clear all the compiled instruction blocks and re-initialize
                free_blocks();
                init_blocks();
            }
            // adjust ErrorEPC if we were in a delay slot, and clear the delay_slot and dyna_interp flags
            if(delay_slot==1 || delay_slot==3)
            {
                ErrorEPC-=4;
            }
            delay_slot = 0;
            dyna_interp = 0;
            // set next instruction address to reset vector
            last_addr = 0xa4000040;
            generic_jump_to(0xa4000040);
            return;

        default:
            DebugMessage(M64MSG_ERROR, "Unknown interrupt queue event type %.8X.", q->type);
            remove_interupt_event();
            break;
    }

#ifdef NEW_DYNAREC
    if (r4300emu == CORE_DYNAREC) {
        EPC = pcaddr;
        pcaddr = 0x80000180;
        Status |= 2;
        Cause &= 0x7FFFFFFF;
        pending_exception=1;
    } else {
        exception_general();
    }
#else
    exception_general();
#endif

    if (!interupt_unsafe_state)
    {
        if (savestates_get_job() == savestates_job_save)
        {
            savestates_save();
            return;
        }
    }
}
Commit	Line	Data
451ab91e	1	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
	2	* Mupen64plus - interupt.c *
	3	* Mupen64Plus homepage: http://code.google.com/p/mupen64plus/ *
	4	* Copyright (C) 2002 Hacktarux *
	5	* *
	6	* This program is free software; you can redistribute it and/or modify *
	7	* it under the terms of the GNU General Public License as published by *
	8	* the Free Software Foundation; either version 2 of the License, or *
	9	* (at your option) any later version. *
	10	* *
	11	* This program is distributed in the hope that it will be useful, *
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of *
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
	14	* GNU General Public License for more details. *
	15	* *
	16	* You should have received a copy of the GNU General Public License *
	17	* along with this program; if not, write to the *
	18	* Free Software Foundation, Inc., *
	19	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *
	20	* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
	21
	22	#include <stdlib.h>
	23
	24	#include <SDL.h>
	25
	26	#define M64P_CORE_PROTOTYPES 1
	27	#include "api/m64p_types.h"
	28	#include "api/callbacks.h"
	29	#include "api/m64p_vidext.h"
	30	#include "api/vidext.h"
	31	#include "memory/memory.h"
	32	#include "main/rom.h"
	33	#include "main/main.h"
	34	#include "main/savestates.h"
	35	#include "main/cheat.h"
	36	#include "osd/osd.h"
	37	#include "plugin/plugin.h"
	38
	39	#include "interupt.h"
	40	#include "r4300.h"
	41	#include "macros.h"
	42	#include "exception.h"
	43	#include "reset.h"
	44	#include "new_dynarec/new_dynarec.h"
	45
	46	#ifdef WITH_LIRC
	47	#include "main/lirc.h"
	48	#endif
	49
	50	unsigned int next_vi;
	51	int vi_field=0;
	52	static int vi_counter=0;
	53
	54	int interupt_unsafe_state = 0;
	55
	56	typedef struct _interupt_queue
	57	{
	58	int type;
	59	unsigned int count;
	60	struct _interupt_queue *next;
	61	} interupt_queue;
	62
	63	static interupt_queue *q = NULL;
	64
65	static void clear_queue(void)
66	{
67	while(q != NULL)
68	{
69	interupt_queue *aux = q->next;
70	free(q);
71	q = aux;
72	}
73	}
74
75	/*static void print_queue(void)
76	{
77	interupt_queue *aux;
78	//if (Count < 0x7000000) return;
79	DebugMessage(M64MSG_INFO, "------------------ 0x%x", (unsigned int)Count);
80	aux = q;
81	while (aux != NULL)
82	{
83	DebugMessage(M64MSG_INFO, "Count:%x, %x", (unsigned int)aux->count, aux->type);
84	aux = aux->next;
85	}
86	}*/
87
88	static int SPECIAL_done = 0;
89
90	static int before_event(unsigned int evt1, unsigned int evt2, int type2)
91	{
92	if(evt1 - Count < 0x80000000)
93	{
94	if(evt2 - Count < 0x80000000)
95	{
96	if((evt1 - Count) < (evt2 - Count)) return 1;
97	else return 0;
98	}
99	else
100	{
101	if((Count - evt2) < 0x10000000)
102	{
103	switch(type2)
104	{
105	case SPECIAL_INT:
106	if(SPECIAL_done) return 1;
107	else return 0;
108	break;
109	default:
110	return 0;
111	}
112	}
113	else return 1;
114	}
115	}
116	else return 0;
117	}
118
119	void add_interupt_event(int type, unsigned int delay)
120	{
121	unsigned int count = Count + delay/*2/;
122	int special = 0;
123	interupt_queue *aux = q;
124
125	if(type == SPECIAL_INT /\|\| type == COMPARE_INT/) special = 1;
126	if(Count > 0x80000000) SPECIAL_done = 0;
127
128	if (get_event(type)) {
129	DebugMessage(M64MSG_WARNING, "two events of type 0x%x in interrupt queue", type);
130	}
131
132	if (q == NULL)
133	{
134	q = (interupt_queue *) malloc(sizeof(interupt_queue));
135	q->next = NULL;
136	q->count = count;
137	q->type = type;
138	next_interupt = q->count;
139	//print_queue();
140	return;
141	}
142
143	if(before_event(count, q->count, q->type) && !special)
144	{
145	q = (interupt_queue *) malloc(sizeof(interupt_queue));
146	q->next = aux;
147	q->count = count;
148	q->type = type;
149	next_interupt = q->count;
150	//print_queue();
151	return;
152	}
153
154	while (aux->next != NULL && (!before_event(count, aux->next->count, aux->next->type) \|\| special))
155	aux = aux->next;
156
157	if (aux->next == NULL)
158	{
159	aux->next = (interupt_queue *) malloc(sizeof(interupt_queue));
160	aux = aux->next;
161	aux->next = NULL;
162	aux->count = count;
163	aux->type = type;
164	}
165	else
166	{
167	interupt_queue *aux2;
168	if (type != SPECIAL_INT)
169	while(aux->next != NULL && aux->next->count == count)
170	aux = aux->next;
171	aux2 = aux->next;
172	aux->next = (interupt_queue *) malloc(sizeof(interupt_queue));
173	aux = aux->next;
174	aux->next = aux2;
175	aux->count = count;
176	aux->type = type;
177	}
178	}
179
180	void add_interupt_event_count(int type, unsigned int count)
181	{
182	add_interupt_event(type, (count - Count)//2/);
183	}
184
185	static void remove_interupt_event(void)
186	{
187	interupt_queue *aux = q->next;
188	if(q->type == SPECIAL_INT) SPECIAL_done = 1;
189	free(q);
190	q = aux;
191	if (q != NULL && (q->count > Count \|\| (Count - q->count) < 0x80000000))
192	next_interupt = q->count;
193	else
194	next_interupt = 0;
195	}
196
197	unsigned int get_event(int type)
198	{
199	interupt_queue *aux = q;
200	if (q == NULL) return 0;
201	if (q->type == type)
202	return q->count;
203	while (aux->next != NULL && aux->next->type != type)
204	aux = aux->next;
205	if (aux->next != NULL)
206	return aux->next->count;
207	return 0;
208	}
209
210	int get_next_event_type(void)
211	{
212	if (q == NULL) return 0;
213	return q->type;
214	}
215
216	void remove_event(int type)
217	{
218	interupt_queue *aux = q;
219	if (q == NULL) return;
220	if (q->type == type)
221	{
222	aux = aux->next;
223	free(q);
224	q = aux;
225	return;
226	}
227	while (aux->next != NULL && aux->next->type != type)
228	aux = aux->next;
229	if (aux->next != NULL) // it's a type int
230	{
231	interupt_queue *aux2 = aux->next->next;
232	free(aux->next);
233	aux->next = aux2;
234	}
235	}
236
237	void translate_event_queue(unsigned int base)
238	{
239	interupt_queue *aux;
240	remove_event(COMPARE_INT);
241	remove_event(SPECIAL_INT);
242	aux=q;
243	while (aux != NULL)
244	{
245	aux->count = (aux->count - Count)+base;
246	aux = aux->next;
247	}
248	add_interupt_event_count(COMPARE_INT, Compare);
249	add_interupt_event_count(SPECIAL_INT, 0);
250	}
251
252	int save_eventqueue_infos(char *buf)
253	{
254	int len = 0;
255	interupt_queue *aux = q;
256	if (q == NULL)
257	{
258	((unsigned int)&buf[0]) = 0xFFFFFFFF;
259	return 4;
260	}
261	while (aux != NULL)
262	{
263	memcpy(buf+len , &aux->type , 4);
264	memcpy(buf+len+4, &aux->count, 4);
265	len += 8;
266	aux = aux->next;
267	}
268	((unsigned int)&buf[len]) = 0xFFFFFFFF;
269	return len+4;
270	}
271
272	void load_eventqueue_infos(char *buf)
273	{
274	int len = 0;
275	clear_queue();
276	while (((unsigned int)&buf[len]) != 0xFFFFFFFF)
277	{
278	int type = ((unsigned int)&buf[len]);
279	unsigned int count = ((unsigned int)&buf[len+4]);
280	add_interupt_event_count(type, count);
281	len += 8;
282	}
283	}
284
285	void init_interupt(void)
286	{
287	SPECIAL_done = 1;
288	next_vi = next_interupt = 5000;
289	vi_register.vi_delay = next_vi;
290	vi_field = 0;
291	clear_queue();
292	add_interupt_event_count(VI_INT, next_vi);
293	add_interupt_event_count(SPECIAL_INT, 0);
294	}
295
296	void check_interupt(void)
297	{
298	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
299	Cause = (Cause \| 0x400) & 0xFFFFFF83;
300	else
301	Cause &= ~0x400;
302	if ((Status & 7) != 1) return;
303	if (Status & Cause & 0xFF00)
304	{
305	if(q == NULL)
306	{
307	q = (interupt_queue *) malloc(sizeof(interupt_queue));
308	q->next = NULL;
309	q->count = Count;
310	q->type = CHECK_INT;
311	}
312	else
313	{
314	interupt_queue* aux = (interupt_queue *) malloc(sizeof(interupt_queue));
315	aux->next = q;
316	aux->count = Count;
317	aux->type = CHECK_INT;
318	q = aux;
319	}
320	next_interupt = Count;
321	}
322	}
323
324	void gen_interupt(void)
325	{
326	if (stop == 1)
327	{
328	vi_counter = 0; // debug
329	dyna_stop();
330	}
331
332	if (!interupt_unsafe_state)
333	{
334	if (savestates_get_job() == savestates_job_load)
335	{
336	savestates_load();
337	return;
338	}
339
340	if (reset_hard_job)
341	{
342	reset_hard();
343	reset_hard_job = 0;
344	return;
345	}
346	}
347
348	if (skip_jump)
349	{
350	unsigned int dest = skip_jump;
351	skip_jump = 0;
352
353	if (q->count > Count \|\| (Count - q->count) < 0x80000000)
354	next_interupt = q->count;
355	else
356	next_interupt = 0;
357
358	last_addr = dest;
359	generic_jump_to(dest);
360	return;
361	}
362
363	switch(q->type)
364	{
365	case SPECIAL_INT:
366	if (Count > 0x10000000) return;
367	remove_interupt_event();
368	add_interupt_event_count(SPECIAL_INT, 0);
369	return;
370	break;
371	case VI_INT:
372	if(vi_counter < 60)
373	{
374	if (vi_counter == 0)
375	cheat_apply_cheats(ENTRY_BOOT);
376	vi_counter++;
377	}
378	else
379	{
380	cheat_apply_cheats(ENTRY_VI);
381	}
382	gfx.updateScreen();
383	#ifdef WITH_LIRC
384	lircCheckInput();
385	#endif
386	SDL_PumpEvents();
387
388	refresh_stat();
389
390	// if paused, poll for input events
391	if(rompause)
392	{
393	osd_render(); // draw Paused message in case gfx.updateScreen didn't do it
394	VidExt_GL_SwapBuffers();
395	while(rompause)
396	{
397	SDL_Delay(10);
398	SDL_PumpEvents();
399	#ifdef WITH_LIRC
400	lircCheckInput();
401	#endif //WITH_LIRC
402	}
403	}
404
405	new_vi();
406	if (vi_register.vi_v_sync == 0) vi_register.vi_delay = 500000;
407	else vi_register.vi_delay = ((vi_register.vi_v_sync + 1)*1500);
408	next_vi += vi_register.vi_delay;
409	if (vi_register.vi_status&0x40) vi_field=1-vi_field;
410	else vi_field=0;
411
412	remove_interupt_event();
413	add_interupt_event_count(VI_INT, next_vi);
414
415	MI_register.mi_intr_reg \|= 0x08;
416	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
417	Cause = (Cause \| 0x400) & 0xFFFFFF83;
418	else
419	return;
420	if ((Status & 7) != 1) return;
421	if (!(Status & Cause & 0xFF00)) return;
422	break;
423
424	case COMPARE_INT:
425	remove_interupt_event();
426	Count+=2;
427	add_interupt_event_count(COMPARE_INT, Compare);
428	Count-=2;
429
430	Cause = (Cause \| 0x8000) & 0xFFFFFF83;
431	if ((Status & 7) != 1) return;
432	if (!(Status & Cause & 0xFF00)) return;
433	break;
434
435	case CHECK_INT:
436	remove_interupt_event();
437	break;
438
439	case SI_INT:
440	#ifdef WITH_LIRC
441	lircCheckInput();
442	#endif //WITH_LIRC
443	SDL_PumpEvents();
444	PIF_RAMb[0x3F] = 0x0;
445	remove_interupt_event();
446	MI_register.mi_intr_reg \|= 0x02;
447	si_register.si_stat \|= 0x1000;
448	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
449	Cause = (Cause \| 0x400) & 0xFFFFFF83;
450	else
451	return;
452	if ((Status & 7) != 1) return;
453	if (!(Status & Cause & 0xFF00)) return;
454	break;
455
456	case PI_INT:
457	remove_interupt_event();
458	MI_register.mi_intr_reg \|= 0x10;
459	pi_register.read_pi_status_reg &= ~3;
460	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
461	Cause = (Cause \| 0x400) & 0xFFFFFF83;
462	else
463	return;
464	if ((Status & 7) != 1) return;
465	if (!(Status & Cause & 0xFF00)) return;
466	break;
467
468	case AI_INT:
469	if (ai_register.ai_status & 0x80000000) // full
470	{
471	unsigned int ai_event = get_event(AI_INT);
472	remove_interupt_event();
473	ai_register.ai_status &= ~0x80000000;
474	ai_register.current_delay = ai_register.next_delay;
475	ai_register.current_len = ai_register.next_len;
476	add_interupt_event_count(AI_INT, ai_event+ai_register.next_delay);
477
478	MI_register.mi_intr_reg \|= 0x04;
479	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
480	Cause = (Cause \| 0x400) & 0xFFFFFF83;
481	else
482	return;
483	if ((Status & 7) != 1) return;
484	if (!(Status & Cause & 0xFF00)) return;
485	}
486	else
487	{
488	remove_interupt_event();
489	ai_register.ai_status &= ~0x40000000;
490
491	//-------
492	MI_register.mi_intr_reg \|= 0x04;
493	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
494	Cause = (Cause \| 0x400) & 0xFFFFFF83;
495	else
496	return;
497	if ((Status & 7) != 1) return;
498	if (!(Status & Cause & 0xFF00)) return;
499	}
500	break;
501
502	case SP_INT:
503	remove_interupt_event();
504	sp_register.sp_status_reg \|= 0x203;
505	// sp_register.sp_status_reg \|= 0x303;
506
507	if (!(sp_register.sp_status_reg & 0x40)) return; // !intr_on_break
508	MI_register.mi_intr_reg \|= 0x01;
509	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
510	Cause = (Cause \| 0x400) & 0xFFFFFF83;
511	else
512	return;
513	if ((Status & 7) != 1) return;
514	if (!(Status & Cause & 0xFF00)) return;
515	break;
516
517	case DP_INT:
518	remove_interupt_event();
519	dpc_register.dpc_status &= ~2;
520	dpc_register.dpc_status \|= 0x81;
521	MI_register.mi_intr_reg \|= 0x20;
522	if (MI_register.mi_intr_reg & MI_register.mi_intr_mask_reg)
523	Cause = (Cause \| 0x400) & 0xFFFFFF83;
524	else
525	return;
526	if ((Status & 7) != 1) return;
527	if (!(Status & Cause & 0xFF00)) return;
528	break;
529
530	case HW2_INT:
531	// Hardware Interrupt 2 -- remove interrupt event from queue
532	remove_interupt_event();
533	// setup r4300 Status flags: reset TS, and SR, set IM2
534	Status = (Status & ~0x00380000) \| 0x1000;
535	Cause = (Cause \| 0x1000) & 0xFFFFFF83;
536	/* the exception_general() call below will jump to the interrupt vector (0x80000180) and setup the
537	* interpreter or dynarec
538	*/
539	break;
540
541	case NMI_INT:
542	// Non Maskable Interrupt -- remove interrupt event from queue
543	remove_interupt_event();
544	// setup r4300 Status flags: reset TS and SR, set BEV, ERL, and SR
545	Status = (Status & ~0x00380000) \| 0x00500004;
546	Cause = 0x00000000;
547	// simulate the soft reset code which would run from the PIF ROM
548	r4300_reset_soft();
549	// clear all interrupts, reset interrupt counters back to 0
550	Count = 0;
551	vi_counter = 0;
552	init_interupt();
553	// clear the audio status register so that subsequent write_ai() calls will work properly
554	ai_register.ai_status = 0;
555	// set ErrorEPC with the last instruction address
556	ErrorEPC = PC->addr;
557	// reset the r4300 internal state
558	if (r4300emu != CORE_PURE_INTERPRETER)
559	{
560	// clear all the compiled instruction blocks and re-initialize
561	free_blocks();
562	init_blocks();
563	}
564	// adjust ErrorEPC if we were in a delay slot, and clear the delay_slot and dyna_interp flags
565	if(delay_slot==1 \|\| delay_slot==3)
566	{
567	ErrorEPC-=4;
568	}
569	delay_slot = 0;
570	dyna_interp = 0;
571	// set next instruction address to reset vector
572	last_addr = 0xa4000040;
573	generic_jump_to(0xa4000040);
574	return;
575
576	default:
577	DebugMessage(M64MSG_ERROR, "Unknown interrupt queue event type %.8X.", q->type);
578	remove_interupt_event();
579	break;
580	}
581
582	#ifdef NEW_DYNAREC
583	if (r4300emu == CORE_DYNAREC) {
584	EPC = pcaddr;
585	pcaddr = 0x80000180;
586	Status \|= 2;
587	Cause &= 0x7FFFFFFF;
588	pending_exception=1;
589	} else {
590	exception_general();
591	}
592	#else
593	exception_general();
594	#endif
595
596	if (!interupt_unsafe_state)
597	{
598	if (savestates_get_job() == savestates_job_save)
599	{
600	savestates_save();
601	return;
602	}
603	}
604	}
605