1 files changed, 112 insertions, 0 deletions
diff --git a/sys/cmd/cc/bits.c b/sys/cmd/cc/bits.c
new file mode 100644
index 0000000..19adf52
--- /dev/null
+++ b/sys/cmd/cc/bits.c
@@ -0,0 +1,112 @@
+#include "cc.h"
+
+// -----------------------------------------------------------------------
+// Architecture
+
+enum 
+{
+    arch·x64,
+    numarch,
+};
+
+// -----------------------------------------------------------------------
+// Types
+
+/* 
+ * enumerated type specifers 
+ * see https://en.wikipedia.org/wiki/C_data_types
+ */
+#define VOID      X(Tvoid, 0)
+
+#define BOOL      X(Tbool, 1)
+#define CHAR      X(Tchar, 2)
+#define SCHAR     X(Tsign|Tchar, 3)
+#define UCHAR     X(Tunsign|Tchar, 4)
+
+#define SHORT     X(Tshort, 5), X(Tshort|Tint, 5)
+#define SSHORT    X(Tsign|Tshort, 6), X(Tsign|Tshort|Tint, 6)
+#define USHORT    X(Tunsign|Tshort, 7), X(Tunsign|Tshort|Tint, 7)
+
+#define INT       X(0, 8), X(Tint, 8)
+#define SINT      X(Tsign, 9), X(Tsign|Tint, 9)
+#define UINT      X(Tunsign, 10), X(Tunsign|Tint, 10)
+
+#define LONG      X(Tlong, 11), X(Tlong|Tint, 11)
+#define SLONG     X(Tsign|Tlong, 12), X(Tsign|Tlong|Tint, 12)
+#define ULONG     X(Tunsign|Tlong, 13), X(Tunsign|Tlong|Tint, 13)
+
+#define VLONG     X(Tvlong, 14), X(Tvlong|Tint, 14)
+#define SVLONG    X(Tsign|Tvlong, 15), X(Tsign|Tvlong|Tint, 15)
+#define UVLONG    X(Tunsign|Tvlong, 16), X(Tunsign|Tvlong|Tint, 16)
+
+#define FLOAT     X(Tfloat, 17)
+#define DOUBLE    X(Tdouble, 18)
+#define LONGDB    X(Tlong|Tdouble, 19)
+#define COMPLEX   X(Tcmplx, 20)
+#define IMAGINARY X(Timag, 21)
+
+/* fixed width definitions */
+#define DEF(name, sz, aln, mx, sgn) {.ident=#name, .size=sz, .align=aln, .max=mx, .sign=sgn }
+
+#define  INT8(name)  DEF(name, 1, 1, 0x7f, 0)
+#define UINT8(name)  DEF(name, 1, 1, 0xff, 1)
+
+#define  INT16(name) DEF(name, 2, 2, 0x7fff, 0)
+#define UINT16(name) DEF(name, 2, 2, 0xffff, 1)
+
+#define  INT32(name) DEF(name, 4, 4, 0x7fffffff, 0)
+#define UINT32(name) DEF(name, 4, 4, 0xffffffff, 1)
+
+#define  INT64(name) DEF(name, 8, 8, 0x7fffffffffffffff, 0)
+#define UINT64(name) DEF(name, 8, 8, 0xffffffffffffffff, 1)
+
+/* architecture specific definitions */
+// TODO: max value should be able to take floats
+#define TYPES                                    \
+    TYPE(DEF(void, 0, 0, 0, 0), VOID)            \
+    TYPE(INT8(bool), BOOL)                       \
+    TYPE(UINT8(char), CHAR)                      \
+    TYPE(INT8(signed char), SCHAR)               \
+    TYPE(UINT8(unsigned char), UCHAR)            \
+    TYPE(INT16(short), SHORT)                    \
+    TYPE(INT16(signed short), SSHORT)            \
+    TYPE(UINT16(unsigned short), USHORT)         \
+    TYPE(INT32(int), INT)                        \
+    TYPE(INT32(signed int), SINT)                \
+    TYPE(UINT32(unsigned int), UINT)             \
+    TYPE(INT64(long), LONG)                      \
+    TYPE(INT64(signed long), SLONG)              \
+    TYPE(UINT64(unsigned long), ULONG)           \
+    TYPE(INT64(long long), VLONG)                \
+    TYPE(INT64(signed long long), SVLONG)        \
+    TYPE(UINT64(unsigned long long), UVLONG)     \
+    TYPE(DEF(float, 4, 4, 0, 0), FLOAT)          \
+    TYPE(DEF(double, 8, 8, 0, 0), DOUBLE)        \
+    TYPE(DEF(long double, 16, 16, 0, 0), LONGDB) \
+    TYPE(DEF(complex, 8, 8, 0, 0), COMPLEX)      \
+    TYPE(DEF(imaginary, 4, 4, 0, 0), IMAGINARY)  \
+
+Type pointer = {.ident = "<pointer>", .size=8, .align=8, .max=0xffffffffffffffff, .sign=0};
+
+/* pack architecture specific definitions into exported arrays */
+#define TYPE(a, ...) a,
+Type basetypes[] = {
+    TYPES
+};
+#undef TYPE
+
+#define TYPE(a, ...) __VA_ARGS__,
+#define X(a, b) a
+uint64 validtypespec[40] = {
+    TYPES
+    Tstruct, Tunion, Tenum, Tname,
+};
+#undef X
+
+#define X(a, b) b
+int indextypespec[40] = {
+    TYPES
+    -1, -1, -1, -1,
+};
+#undef X
+#undef TYPE