no f/b stubs

brainfuck.asm

@@ -73,33 +73,26 @@ bf_instructions:
         jmp rbx
         align 8
     times 8*('['-'>'-1) hlt
-    bf_forward_stub: ; '[' ascii 91
-        jmp bf_forward
-        align 8
-    times 8*(']'-'['-1) hlt
-    bf_backward_stub: ; ']' ascii 93
-        jmp bf_backward
-        align 8
     
-    bf_forward:
+    bf_forward: ; '[' ascii 91
+        ; jest 16 bajtów miejsca
         cmp byte [rdi], 0
-        je bf_jump
+        jne .dont_jump
-        bf_forward_end:
+            mov rsi, [8*rsi + r14]
+        .dont_jump:
         inc rsi
         jmp rbx
+        align 8
         
-    bf_backward:
+    bf_backward: ; ']' ascii 93
+        ; więcej niż 8 bajtów, ale jest miejsce
         cmp byte [rdi], 0
-        jne bf_jump
+        je .dont_jump
-        bf_backward_end:
+            mov rsi, [8*rsi + r14]
+        .dont_jump:
         inc rsi
         jmp rbx
     
-    bf_jump:
-        sub rsi, bf_program
-        mov rsi, [8*rsi + bf_jumps]
-        inc rsi
-        jmp rbx
     
     bf_out:
         push rdi
@@ -156,7 +149,13 @@ _jump_loop:
 
 lea rsi, [bf_program]
 lea rdi, [bf_tape]
-lea rbx, [_program_loop]
+lea rbx, [_program_loop] ; stała
+
+lea r13, [bf_program]
+shl r13, 3
+lea r14, [bf_jumps]
+sub r14, r13 ; stała do zamiany adresu programu na adres w bf_jumps
+
 _program_loop:
     movzx rax, byte [rsi]
     lea rax, [bf_instructions + 8*rax]