--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/decode-mixed-mode.c	Sun Oct 19 22:48:24 2025 -0400
@@ -0,0 +1,73 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <inttypes.h>
+
+static void decode_size(unsigned long x)
+{
+    const char *lut[] = {"No", "One", "Two", "Four"};
+
+    printf("k%sByteCode", lut[x & 3]);
+}
+
+int main(int argc, char *argv[])
+{
+    unsigned long x;
+
+    if (argc < 2) {
+        fprintf(stderr, "usage: decrypt-mixed-call <param>\n");
+        return 1;
+    }
+
+    x = strtoul(argv[1], NULL, 0);
+
+    switch (x & 15) {
+    case 0:
+        printf("kPascalStackBased");
+        break;
+    case 1:
+        printf("kCStackBased");
+        break;
+    case 2:
+        printf("I'm too lazy for this!");
+        return 1;
+    case 5:
+        printf("kThinkCStackBased");
+        break;
+    case 8:
+        printf("kD0DispatchedPascalStackBased");
+        break;
+    case 9:
+        printf("kD0DispatchedCStackBased");
+        break;
+    case 12:
+        printf("kD1DispatchedPascalStackBased");
+        break;
+    case 14:
+        printf("kStackDispatchedPascalStackBased");
+        break;
+    default:
+        /* Invalid */
+        return 1;
+    }
+
+    x >>= 4;
+
+    printf(" | RESULT_SIZE(");
+    decode_size(x);
+    printf(")");
+
+    /* trim the fat */
+    x >>= 2;
+
+    /* hopefully we're using stack, since that's the ONLY thing i'm handling */
+    for (uint32_t i = 1; i < 13 && x; i++, x >>= 2) {
+        printf(" | STACK_ROUTINE_PARAMETER(%" PRIu32 ", ", i);
+        decode_size(x);
+        printf(")");
+    }
+
+    puts("");
+
+    return 0;
+}