i'd stash all of this but it's less effort to commit

waterbox/pizza/Makefile

@@ -1,18 +1,42 @@
-CFLAGS=-O3
+CC = x86_64-nt64-midipix-gcc
-ifeq ($(OS),Windows_NT)
-    LIBS=-lrt `sdl2-config --libs`
-    CFLAGS+=-w 
-else
-    LIBS=-lrt -lSDL2 -pthread
-endif
 
-all: libpizza.a
+CCFLAGS:=-Ilib \
-	gcc $(CFLAGS) pizza.c -I lib lib/libpizza.a -o emu-pizza $(LIBS)
+	-I../emulibc \
+	-Wall -Werror=pointer-to-int-cast -Werror=int-to-pointer-cast -Werror=implicit-function-declaration \
+	-std=c99 -fomit-frame-pointer -fvisibility=hidden \
+	-DLSB_FIRST -DUSE_32BPP_RENDERING -DINLINE=static\ __inline__ \
+	-O0 -flto
 
-libpizza.a:
+TARGET = pizza.wbx
-	make -C lib
+
+LDFLAGS = -Wl,--dynamicbase,--export-all-symbols
+
+ROOT_DIR:=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+SRCS:=$(shell find $(ROOT_DIR) -type f -name '*.c')
+OBJ_DIR:=$(ROOT_DIR)/obj
+
+_OBJS:=$(SRCS:.c=.o)
+OBJS:=$(patsubst $(ROOT_DIR)%,$(OBJ_DIR)%,$(_OBJS))
+
+$(OBJ_DIR)/%.o: %.c
+	@mkdir -p $(@D)
+	@$(CC) -c -o $@ $< $(CCFLAGS)
+
+all: $(TARGET)
+
+.PHONY: clean all
+
+$(TARGET).in: $(OBJS)
+	@$(CC) -o $@ $(LDFLAGS) $(CCFLAGS) $(OBJS) ../emulibc/libemuhost.so
+
+$(TARGET): $(TARGET).in
+#	strip $< -o $@ -R /4 -R /14 -R /29 -R /41 -R /55 -R /67 -R /78 -R /89 -R /104
+	cp $< $@
 
 clean:
-	rm -f *.o
+	rm -rf $(OBJ_DIR)
-	make -C cpu clean
+	rm -f $(TARGET).in
-	make -C system clean
+	rm -f $(TARGET)
+
+#install:
+#	$(CP) $(TARGET) $(DEST_$(ARCH))

waterbox/pizza/lib/Makefile

@@ -1,9 +0,0 @@
-SRCS=$(wildcard *.c)
-CFLAGS=-I.. -c -pthread -O3 -Wall
-
-all: 
-	gcc $(CFLAGS) $(SRCS)
-	ar rcs libpizza.a *.o
-
-clean: 
-	rm -f *.o

waterbox/pizza/lib/cartridge.c

@@ -35,35 +35,19 @@ uint8_t rom[2 << 24];
 char file_sav[1024];
 char file_rtc[1024];
 
-/* internal use prototype */
-int __mkdirp (char *path, mode_t omode);
-
-
 /* guess what              */
 /* return values           */
 /* 0: OK                   */
 /* 1: Can't open/read file */
 /* 2: Unknown cartridge    */
 
-char cartridge_load(char *file_gb) 
+char cartridge_load(const void* data, size_t sz) 
 {
-    FILE *fp;
     int i,z = 0;
 
-    /* open ROM file */
+    if (sz < 1 || sz > 2 << 24)
-    if ((fp = fopen(file_gb, "r")) == NULL) 
         return 1;
 
-    /* read all the content into rom buffer */
-    size_t sz = fread(rom, 1, (2 << 24), fp);
-
-    /* check for errors   */
-    if (sz < 1) 
-        return 1;
-
-    /* close */
-    fclose(fp);
- 
     /* gameboy color? */
     if (rom[0x143] == 0xC0 || rom[0x143] == 0x80)
     {
@@ -169,9 +153,6 @@ char cartridge_load(char *file_gb)
         case 0x05: mmu_init_ram(1 << 16); utils_log("64 kB\n"); break;
     }
 
-    /* save base name of the rom */
-    strncpy(global_rom_name, basename(file_gb), 256);
-
     /* restore saved RAM if it's the case */
     mmu_restore_ram(file_sav);
 

waterbox/pizza/lib/cycles.c

@@ -17,8 +17,6 @@
 
 */
 
-#include <semaphore.h>
-#include <signal.h>
 #include <string.h>
 #include <time.h>
 
@@ -32,12 +30,6 @@
 #include "interrupt.h"
 #include "utils.h"
 
-/* timer stuff */
-struct itimerspec cycles_timer;
-timer_t           cycles_timer_id = 0;
-struct sigevent   cycles_te;
-struct sigaction  cycles_sa;
-
 interrupts_flags_t *cycles_if;
 
 /* instance of the main struct */
@@ -45,9 +37,6 @@ cycles_t cycles = { 0, 0, 0, 0 };
 
 #define CYCLES_PAUSES 256
 
-/* sync timing */
-struct timespec deadline;
-
 /* hard sync stuff (for remote connection) */
 uint8_t  cycles_hs_mode = 0;
 
@@ -96,6 +85,13 @@ void cycles_set_speed(char dbl)
     cycles_change_emulation_speed();
 }
 
+/* set emulation speed */
+void cycles_change_emulation_speed()
+{
+            cycles.step = ((4194304 / CYCLES_PAUSES) 
+                          << global_cpu_double_speed);
+}
+
 void cycles_closest_next()
 {
     int_fast32_t diff = cycles.cnt - cycles.next;
@@ -163,16 +159,6 @@ void cycles_step()
     /* 65536 == cpu clock / CYCLES_PAUSES pauses every second */
     if (cycles.cnt == cycles.next) 
     {
-        deadline.tv_nsec += 1000000000 / CYCLES_PAUSES;
-
-        if (deadline.tv_nsec > 1000000000)
-        {
-            deadline.tv_sec += 1;
-            deadline.tv_nsec -= 1000000000;
-        }
-
-        clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &deadline, NULL);
-        
         cycles.next += cycles.step;
 
         /* update current running seconds */
@@ -328,9 +314,6 @@ void cycles_hdma()
 
 char cycles_init()
 {
-    /* CLOCK */
-    clock_gettime(CLOCK_MONOTONIC, &deadline);
-
     cycles.inited = 1;
 
     /* interrupt registers */
@@ -347,21 +330,3 @@ char cycles_init()
 
     return 0;
 }
-
-char cycles_start_timer()
-{
-    /* just pick new time reference */
-    clock_gettime(CLOCK_MONOTONIC, &deadline);
-
-    return 0;
-}
-
-void cycles_stop_timer()
-{
-    if (cycles.inited == 0)
-        return;
-}
-
-void cycles_term()
-{
-}

waterbox/pizza/lib/cycles.h

@@ -65,10 +65,8 @@ void cycles_hdma();
 char cycles_init();
 void cycles_set_speed(char dbl);
 void cycles_start_hs();
-char cycles_start_timer();
 void cycles_step();
 void cycles_stop_hs();
-void cycles_stop_timer();
 void cycles_term();
 void cycles_vblank();
 

waterbox/pizza/lib/gameboy.c

@@ -121,8 +121,10 @@ void gameboy_init()
     state.sp = 0xFFFE;
     *state.f = 0xB0;
 
-    /* init semaphore for pauses */
+    /* reset counter */
-    sem_init(&gameboy_sem, 0, 0);
+    cycles.cnt = 0;
+    /* start at normal speed */
+    global_cpu_double_speed = 0;
 
     /* mark as inited */
     gameboy_inited = 1;
@@ -130,41 +132,10 @@ void gameboy_init()
     return;
 } 
 
-void gameboy_set_pause(char pause)
-{
-    if (!gameboy_inited)
-        return;
-
-    if (pause == global_pause)
-        return;
-
-    global_pause = pause;
-
-    if (pause)
-    {
-        /* wait a bit - i need the main cycle fall into global_pause check */
-        usleep(100000);
-
-        /* stop timer */
-        cycles_stop_timer();
-    }
-    else
-    {
-        /* restart timer */
-        cycles_start_timer();
-
-        /* wake up */
-        sem_post(&gameboy_sem);
-    }
-}
-
 void gameboy_run()
 {
     uint8_t op;
 
-    /* reset counter */
-    cycles.cnt = 0;
-
     /* get interrupt flags and interrupt enables */
     uint8_t *int_e;
     uint8_t *int_f;
@@ -173,9 +144,6 @@ void gameboy_run()
     int_e = mmu_addr(0xFFFF);
     int_f = mmu_addr(0xFF0F);
 
-    /* start at normal speed */
-    global_cpu_double_speed = 0;
-
     /* run stuff!                                                          */
     /* mechanism is simple.                                                */
     /* 1) execute instruction 2) update cycles counter 3) check interrupts */
@@ -188,10 +156,6 @@ void gameboy_run()
             global_slow_down = 0;
         }*/
 
-        /* pause? */
-        while (global_pause)
-            sem_wait(&gameboy_sem);
-
         /* get op */
         op = mmu_read(state.pc);
 
@@ -290,28 +254,5 @@ void gameboy_run()
         }
     }
 
-    /* terminate all the stuff */
-    cartridge_term();
-    sound_term();
-    mmu_term();
-
     return; 
 }
-
-void gameboy_stop() 
-{
-    global_quit = 1;
-
-    /* wake up */
-    if (global_pause) 
-    {
-        global_pause = 0;
-        sem_post(&gameboy_sem);
-    }
-
-    /* unlock threads stuck during reading */
-    sound_term();
-
-    /* shutdown semaphore limitator */
-    cycles_term();
-}

waterbox/pizza/lib/global.c

@@ -27,26 +27,18 @@ char global_cgb;
 char global_cpu_double_speed;
 char global_debug;
 char global_next_frame;
-char global_pause;
-char global_quit;
-char global_record_audio;
-char global_rom_name[256];
 char global_rumble;
 char global_slow_down;
 char global_window;
 
 void global_init()
 {
-    global_quit = 0;
-    global_pause = 0;
     global_window = 1;
     global_debug = 0;
     global_cgb = 0;
     global_cpu_double_speed = 0;
     global_slow_down = 0;
-    global_record_audio = 0;
     global_next_frame = 0;
     global_rumble = 0;
-    bzero(global_rom_name, 256);
     sprintf(global_cart_name, "NOCARTIRDGE");
 }

waterbox/pizza/lib/global.h

@@ -20,8 +20,6 @@
 #ifndef __GLOBAL__
 #define __GLOBAL__
 
-extern char global_quit;
-extern char global_pause;
 extern char global_window;
 extern char global_debug;
 extern char global_cgb;
@@ -29,9 +27,7 @@ extern char global_next_frame;
 // extern char global_started;
 extern char global_cpu_double_speed;
 extern char global_slow_down;
-extern char global_record_audio;
 extern char global_rumble;
-extern char global_rom_name[256];
 extern char global_cart_name[256];
 
 /* prototypes */

waterbox/pizza/lib/serial.c

@@ -17,8 +17,6 @@
 
 */
 
-#include <pthread.h>
-
 #include "cycles.h"
 #include "interrupt.h"
 #include "mmu.h"
@@ -33,10 +31,6 @@ serial_data_send_cb_t serial_data_send_cb;
 
 interrupts_flags_t *serial_if;
 
-/* mutexes for serial sync */
-pthread_cond_t    serial_cond;
-pthread_mutex_t   serial_mutex;
-
 /* second message before the first was handled? */
 uint8_t serial_second_set = 0;
 uint8_t serial_second_data = 0;
@@ -86,17 +80,10 @@ void serial_init()
 
     /* start as not connected */
     serial.peer_connected = 0;
-
-    /* init semaphore for sync */
-    pthread_mutex_init(&serial_mutex, NULL);
-    pthread_cond_init(&serial_cond, NULL);
 }
 
 void serial_write_reg(uint16_t a, uint8_t v)
 {
-    /* lock the serial */
-    pthread_mutex_lock(&serial_mutex);
-
     switch (a)
     {
     case 0xFF01: 
@@ -122,8 +109,6 @@ void serial_write_reg(uint16_t a, uint8_t v)
     } 
 
 end:
-    /* unlock the serial */
-    pthread_mutex_unlock(&serial_mutex);
 }
 
 uint8_t serial_read_reg(uint16_t a)
@@ -144,9 +129,6 @@ uint8_t serial_read_reg(uint16_t a)
 
 void serial_recv_byte(uint8_t v, uint8_t clock, uint8_t transfer_start)
 {
-    /* lock the serial */
-    pthread_mutex_lock(&serial_mutex);
-
     /* second message during same span time? */
     if (serial.data_recv)
     {
@@ -166,20 +148,14 @@ void serial_recv_byte(uint8_t v, uint8_t clock, uint8_t transfer_start)
     serial.data_recv_transfer_start = transfer_start;
 
     /* notify main thread in case it's waiting */
-    if (serial_waiting_data)
+    //if (serial_waiting_data)
-        pthread_cond_signal(&serial_cond);
+        //pthread_cond_signal(&serial_cond);
 
 end:
-
-    /* unlock the serial */
-    pthread_mutex_unlock(&serial_mutex);
 }
 
 void serial_send_byte()
 {
-    /* lock the serial */
-    pthread_mutex_lock(&serial_mutex);
-
     serial.data_sent = 1;
     serial.data_to_send = serial.data; 
     serial.data_sent_clock = serial.clock; 
@@ -188,9 +164,6 @@ void serial_send_byte()
     if (serial_data_send_cb)
         (*serial_data_send_cb) (serial.data, serial.clock, 
                                 serial.transfer_start);
-
-    /* unlock the serial */
-    pthread_mutex_unlock(&serial_mutex);
 }
 
 void serial_set_send_cb(serial_data_send_cb_t cb)
@@ -200,9 +173,6 @@ void serial_set_send_cb(serial_data_send_cb_t cb)
 
 void serial_wait_data()
 {
-    /* lock the serial */
-    pthread_mutex_lock(&serial_mutex);
-
     if (serial.data_sent && serial.data_recv == 0)
     {
         /* wait max 3 seconds */
@@ -217,12 +187,9 @@ void serial_wait_data()
         serial_waiting_data = 1;
 
         /* notify something has arrived */
-        pthread_cond_timedwait(&serial_cond, &serial_mutex, &wait);
+        // pthread_cond_timedwait(&serial_cond, &serial_mutex, &wait);
 
         /* not waiting anymore */
         serial_waiting_data = 0;
     }
-
-    /* unlock the serial */
-    pthread_mutex_unlock(&serial_mutex);
 }

waterbox/pizza/lib/sound.c

@@ -396,18 +396,12 @@ void sound_push_samples(int16_t l, int16_t r)
     {
         unsigned int i;
 
-	    /* since we're accessing a shared buffer, lock it */
-        pthread_mutex_lock(&sound_mutex);
-
         /* put them in circular shared buffer */
 	    for (i=0; i<SOUND_BUF_TMP_SZ; i++)
             sound_push_sample(sound.buf_tmp[i]);
 
 	    /* reset counter */
 	    sound.buf_tmp_wr = 0;
-   
-        /* set it free */	
-        pthread_mutex_unlock(&sound_mutex);
     }	    
 }
 
@@ -431,7 +425,7 @@ void sound_push_sample(int16_t s)
     {
         sound.buf_empty = 0;
 
-        pthread_cond_signal(&sound_cond); 
+        //pthread_cond_signal(&sound_cond); 
     }
 
     /* wait for the audio to be played */
@@ -460,24 +454,14 @@ size_t sound_available_samples()
 /* read a block of data from circular buffer */
 void sound_read_samples(int to_read, int16_t *buf)
 {
-    /* lock the buffer */
-    pthread_mutex_lock(&sound_mutex);
-
-    /* am i shutting down? exit */
-    if (global_quit)
-    {
-        pthread_mutex_unlock(&sound_mutex);
-        return;
-    }
-
     /* not enough samples? read what we got */
     if (sound.buf_available < to_read)
     {
         /* stop until we got enough samples */
         sound.buf_empty = 1;
 
-        while (sound.buf_empty && !global_quit)
+        //while (sound.buf_empty && !global_quit)
-            pthread_cond_wait(&sound_cond, &sound_mutex);
+            //pthread_cond_wait(&sound_cond, &sound_mutex);
     }
 
     if (sound.buf_rd + to_read >= SOUND_BUF_SZ)
@@ -503,9 +487,6 @@ void sound_read_samples(int to_read, int16_t *buf)
 
     /* update avaiable samples */
     sound.buf_available -= to_read;
-
-    /* unlock the buffer */
-    pthread_mutex_unlock(&sound_mutex);
 }
 
 /* calc the new frequency by sweep module */
@@ -1426,12 +1407,3 @@ void sound_rebuild_wave()
         sound.channel_three.wave[sound.channel_three.index];
 
 }
-
-void sound_term()
-{
-    if (sound.buf_empty)
-    {
-        sound.buf_empty = 0;
-        pthread_cond_signal(&sound_cond);
-    }
-}

waterbox/pizza/lib/sound.h

@@ -325,7 +325,6 @@ void     sound_step_ch2();
 void     sound_step_ch3();
 void     sound_step_ch4();
 void     sound_step_sample();
-void     sound_term();
 void     sound_write_reg(uint16_t a, uint8_t v);
 
 #endif

waterbox/pizza/pizza.c

@@ -336,84 +336,3 @@ void rumble_cb(uint8_t rumble)
     if (rumble)
         printf("RUMBLE\n");
 }
-
-
-/*
- *  Returns 1 if a directory has been created,
- *  2 if it already existed, and 0 on failure.
- */
-int __mkdirp (char *path, mode_t omode)
-{
-    struct stat sb;
-    mode_t numask, oumask;
-    int first, last, retval;
-    char *p;
-
-    p = path;
-    oumask = 0;
-    retval = 1;
-
-    if (p[0] == '/')        /* Skip leading '/'. */
-        ++p;
-
-    for (first = 1, last = 0; !last ; ++p)
-    {
-        if (p[0] == '\0')
-            last = 1;
-        else if (p[0] != '/')
-            continue;
-
-        *p = '\0';
-
-        if (!last && p[1] == '\0')
-            last = 1;
-
-        if (first)
-        {
-            oumask = umask(0);
-            numask = oumask & ~(S_IWUSR | S_IXUSR);
-            (void) umask(numask);
-            first = 0;
-        }
-
-        if (last)
-            (void) umask(oumask);
-
-        if (mkdir(path, last ? omode : S_IRWXU | S_IRWXG | S_IRWXO) < 0)
-        {
-            if (errno == EEXIST || errno == EISDIR)
-            {
-                if (stat(path, &sb) < 0)
-                {
-                    retval = 0;
-                    break;
-                }
-                else if (!S_ISDIR(sb.st_mode))
-                {
-                    if (last)
-                        errno = EEXIST;
-                    else
-                        errno = ENOTDIR;
-
-                    retval = 0;
-                    break;
-                }
-
-                if (last)
-                    retval = 2;
-            }
-            else
-            {
-                retval = 0;
-                break;
-            }
-        }
-        if (!last)
-            *p = '/';
-    }
-
-    if (!first && !last)
-        (void) umask(oumask);
-
-    return retval;
-}