Initial commit of zxbox - a ZX Spectrum emulator ported by Anton Romanov. It theoretically runs on all targets, but I have not included it in the Archos builds because it is just too slow to be usable.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10950 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/zxbox/helpers.c

@@ -0,0 +1,55 @@
+#include "zxconfig.h"
+
+int my_getc(int fd){
+    unsigned char c;
+    if ( rb->read(fd, &c, 1) )
+        return c;
+    else
+        return EOF;
+}
+
+off_t my_ftell(int fd){
+    return rb->lseek(fd, 0, SEEK_CUR);
+}
+
+int my_putc(char c , int fd){
+    return rb->write(fd,&c,1);
+}
+
+void *my_malloc(size_t size)
+{
+    static char *offset = NULL;
+    static int totalSize = 0;
+    char *ret;
+
+    int remainder = size % 4;
+
+    size = size + 4-remainder;
+
+    if (offset == NULL)
+    {
+        offset = rb->plugin_get_audio_buffer(&totalSize);
+    }
+
+    if (size + 4 > abs(totalSize) )
+    {
+  /*      printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");
+        printf("\nMALLOC BARF");*/
+        /* We've made our point. */
+
+        return NULL;
+    }
+
+    ret = offset + 4;
+    *((unsigned int *)offset) = size;
+
+    offset += size + 4;
+    totalSize -= size + 4;
+    return ret;
+
+}