Various C++ improvements
+ Changed indentation, causes the stats to say there's a lot of lines changed.
+ Should be able to compile multiple times with the same compiler object.
+ Create a CodeBuffer class to hold the code.
+ Create a CodeGenerator class to encapsulate knowlege of the CPU instruction set.
+ Started filling in the code generator.
diff --git a/libacc/tests/bellard.otccex.c b/libacc/tests/bellard.otccex.c
new file mode 100644
index 0000000..e8f0989
--- /dev/null
+++ b/libacc/tests/bellard.otccex.c
@@ -0,0 +1,126 @@
+/* #!/usr/local/bin/otcc */
+/*
+ * Sample OTCC C example. You can uncomment the first line and install
+ * otcc in /usr/local/bin to make otcc scripts !
+ */
+
+/* Any preprocessor directive except #define are ignored. We put this
+ include so that a standard C compiler can compile this code too. */
+#include <stdio.h>
+
+/* defines are handled, but macro arguments cannot be given. No
+ recursive defines are tolerated */
+#define DEFAULT_BASE 10
+
+/*
+ * Only old style K&R prototypes are parsed. Only int arguments are
+ * allowed (implicit types).
+ *
+ * By benchmarking the execution time of this function (for example
+ * for fib(35)), you'll notice that OTCC is quite fast because it
+ * generates native i386 machine code.
+ */
+fib(n)
+{
+ if (n <= 2)
+ return 1;
+ else
+ return fib(n-1) + fib(n-2);
+}
+
+/* Identifiers are parsed the same way as C: begins with letter or
+ '_', and then letters, '_' or digits */
+fact(n)
+{
+ /* local variables can be declared. Only 'int' type is supported */
+ int i, r;
+ r = 1;
+ /* 'while' and 'for' loops are supported */
+ for(i=2;i<=n;i++)
+ r = r * i;
+ return r;
+}
+
+/* Well, we could use printf, but it would be too easy */
+print_num(n, b)
+{
+ int tab, p, c;
+ /* Numbers can be entered in decimal, hexadecimal ('0x' prefix) and
+ octal ('0' prefix) */
+ /* more complex programs use malloc */
+ tab = malloc(0x100);
+ p = tab;
+ while (1) {
+ c = n % b;
+ /* Character constants can be used */
+ if (c >= 10)
+ c = c + 'a' - 10;
+ else
+ c = c + '0';
+ *(char *)p = c;
+ p++;
+ n = n / b;
+ /* 'break' is supported */
+ if (n == 0)
+ break;
+ }
+ while (p != tab) {
+ p--;
+ printf("%c", *(char *)p);
+ }
+ free(tab);
+}
+
+/* 'main' takes standard 'argc' and 'argv' parameters */
+main(argc, argv)
+{
+ /* no local name space is supported, but local variables ARE
+ supported. As long as you do not use a globally defined
+ variable name as local variable (which is a bad habbit), you
+ won't have any problem */
+ int s, n, f, base;
+
+ /* && and || operator have the same semantics as C (left to right
+ evaluation and early exit) */
+ if (argc != 2 && argc != 3) {
+ /* '*' operator is supported with explicit casting to 'int *',
+ 'char *' or 'int (*)()' (function pointer). Of course, 'int'
+ are supposed to be used as pointers too. */
+ s = *(int *)argv;
+ help(s);
+ return 1;
+ }
+ /* Any libc function can be used because OTCC uses dynamic linking */
+ n = atoi(*(int *)(argv + 4));
+ base = DEFAULT_BASE;
+ if (argc >= 3) {
+ base = atoi(*(int *)(argv + 8));
+ if (base < 2 || base > 36) {
+ /* external variables can be used too (here: 'stderr') */
+ fprintf(stderr, "Invalid base\n");
+ return 1;
+ }
+ }
+ printf("fib(%d) = ", n);
+ print_num(fib(n), base);
+ printf("\n");
+
+ printf("fact(%d) = ", n);
+ if (n > 12) {
+ printf("Overflow");
+ } else {
+ /* why not using a function pointer ? */
+ f = &fact;
+ print_num((*(int (*)())f)(n), base);
+ }
+ printf("\n");
+ return 0;
+}
+
+/* functions can be used before being defined */
+help(name)
+{
+ printf("usage: %s n [base]\n", name);
+ printf("Compute fib(n) and fact(n) and output the result in base 'base'\n");
+}
+
diff --git a/libacc/tests/missing-main.c b/libacc/tests/missing-main.c
new file mode 100644
index 0000000..e73eec4
--- /dev/null
+++ b/libacc/tests/missing-main.c
@@ -0,0 +1,4 @@
+/* No main. */
+
+a() {
+}
\ No newline at end of file
diff --git a/libacc/tests/otcc.out-orig b/libacc/tests/otcc.out-orig
index 2cb08ff..3bf7e1f 100644
--- a/libacc/tests/otcc.out-orig
+++ b/libacc/tests/otcc.out-orig
Binary files differ