ported Brainfuck interpreter.

1 files changed, 21 insertions, 7 deletions

diff --git a/userspace/brainfuck.c b/userspace/brainfuck.c
index 03ce4f5..c363693 100644
--- a/userspace/brainfuck.c
+++ b/userspace/brainfuck.c
@@ -25,7 +25,7 @@
 
 // by brainfuck standards (doesn't that sound funny?), the data pointer has
 // 30,000 bytes at its disposal, but I hate hard-coding such stuff.
-#define DATA_SIZE 30000
+#define DATA_SIZE 3000
 
 void usage() {
     puts(
@@ -34,13 +34,14 @@ void usage() {
     );
 }
 
-int main(int argc, char **argv) {
-
-    // ADDED BY FOOLOS: we will show usage anyway
-     usage();
+int main(int argc, char **argv) 
+{
+    //added by FOOLOS
+    syscalls_init();
 
     // used by the bf program
     unsigned char *dataptr = malloc(sizeof(char) * DATA_SIZE);
+
     // position of the data pointer
     unsigned int datapos = 0;
     // input file
@@ -51,6 +52,8 @@ int main(int argc, char **argv) {
     // we will read chars from the input into r
     unsigned char r;
     
+    /* uncommented by FOOLOS 
+     
     // determine input
     if (argc == 2) {
         if (strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-h") == 0) {
@@ -69,16 +72,26 @@ int main(int argc, char **argv) {
         usage();
         return EXIT_FAILURE;
     }
-    
+
+    */
+
+    // added by FOOLOS
+    input=fopen(1,"r");
+    puts("Welcome to the BRAINFUCK by Felix Oghina");
+    puts("Compiled for FoolOS");
+    printf("dataptr: 0x%08X\n",dataptr);
+
     // zero the data pointer
     for (i=0; i < DATA_SIZE; i++) {
         dataptr[i] = 0;
     }
-    
+
     // start interpreting
     rewind(input);
+
     while (!feof(input)) {
         r = (unsigned char) fgetc(input);
+//	printf("%c",r);
         switch(r) {
         case '>':
             if (datapos < DATA_SIZE - 1) datapos++;
@@ -129,5 +142,6 @@ int main(int argc, char **argv) {
             break;
         }
     }
+    puts("brainfuck: finishing!");
     return EXIT_SUCCESS;
 }