enter

ka/main.k

@@ -5,8 +5,9 @@
 ; Main function
 ;
 main:
-    enter
+    ret
 
+itoa_test:
     mov ax0, .buf
     mov ax1, -9223372036854775807
     mov ax2, 10
@@ -28,7 +29,6 @@ main:
     mov rdi, 8
     lea rbi, b[rdi + rsi * 2 + 1]
 
-    leave
     ret
 
 .buf = [32]

vm/in/INSTRS

@@ -359,17 +359,19 @@ ret
 #
 #       PUSH(RBP)
 #       RBP = RSP
+#       RSP = RSP - $1
 #
 # Throws:
 #       See PUSH
 #
 enter
+enter i
 
 #
 # Leave stack frame (LEAVE)
 #
-#       RBP = *RSP
-#       RSP = RSP + 8
+#       RSP = RBP
+#       POP(RBP)
 #
 leave
 
@@ -377,7 +379,6 @@ leave
 # Supervisor only instructions                                              #
 #---------------------------------------------------------------------------#
 
-
 pushf
 popf
 
@@ -455,7 +456,7 @@ cla
 cln
 
 #
-# Send a character to standard output
+# Send a character to standard output (PRN)
 #
 # Throws:
 #       #PRN if DV text mode enabled

vm/in/stack.c

@@ -41,8 +41,14 @@ IMPL_START_0(enter)
     // We don't CHK_STACK(<) here because ENTER
     // (should) always be preceded by a CALL,
     // which already checks the stack
+
     PUSH(rbp);
     rbp = rsp;
+    
+    if (p1) {
+        GETV(v1, p1);
+        rsp -= v1 * 8;
+    }
 }
 IMPL_END;
 
@@ -50,6 +56,7 @@ IMPL_START_0(leave)
 {
     // Do NOT check stack here
     // (it would always fail)
+    rsp = rbp;
     POP(rbp);
 }
 IMPL_END;

vm/pc/decd.c

@@ -289,11 +289,14 @@ static bool eval_cond(ctx_t *ctx, uint cond)
 //
 // Executes an instruction
 //
-void exec_instr(
-    ctx_t *ctx, instr_t *in,
-    acc_t *p1,  acc_t *p2, 
-    bool lock,  bool rep,
-    uint cond,  ulong pc)
+void exec_instr(ctx_t *ctx,
+                instr_t *in,
+                acc_t *p1,
+                acc_t *p2, 
+                bool lock,
+                bool rep,
+                uint cond,
+                ulong pc)
 {
     bool out;
     ulong r1 = 0, r2 = 0;

vm/pc/dump.c

@@ -64,11 +64,14 @@ static void dump_acc(ctx_t *ctx, acc_t *p)
     }
 }
 
-void dump_instr(
-    ctx_t *ctx, instr_t *in,
-    acc_t *p1,  acc_t *p2,
-    bool lock,  bool rep,
-    uint cond,  ulong pc)
+void dump_instr(ctx_t *ctx,
+                instr_t *in,
+                acc_t *p1,
+                acc_t *p2,
+                bool lock,
+                bool rep,
+                uint cond,
+                ulong pc)
 {
     log("0x%lX: ", pc);