remove unused code

twasm/asm/main.asm

@@ -695,71 +695,6 @@ identify_next_token:
   mov rdx, rsi ; length
   ret
 
-; ------------------------------------------------------------------------------
-; copy_token 
-;
-; description:
-; copies a token from one spot in memory to another
-;
-; parameters:
-; rdi -> start of buffer to be read
-; rsi -> start of buffer to be written
-;
-; returned:
-; rax -> last byte read
-; rdx -> last byte written
-; ------------------------------------------------------------------------------
-
-copy_token:
-  .loop:
-    mov dl, [rdi] ; move bit to compare to current byte in read buffer
-
-    push rdi ; push incrementors to call elemb
-    push rsi ;
-
-    mov rdi, 8                  ; length of terminator list
-    mov rsi, token_terminator_8 ; start of terminator list
-                                ; dl set before pushing rdi
-    call elemb
-
-    pop rsi ;
-    pop rdi ; pop incrementors after call
-
-    cmp rax, 1 ; check if the next character is a token terminator
-    je .break  ; > if so, break the function
-
-    ; rdi and rsi set from previous loop iteration
-    call copy_byte ; if not, copy the current byte in read buffer
-
-    inc rdi ; read pointer
-    inc rsi ; write pointer
-    jmp .loop
-
-  .break:
-    mov rax, rdi ; -> last byte read
-    mov rdx, rsi ; -> last byte written
-    ret
-    
-; ------------------------------------------------------------------------------
-; copy_byte
-;
-; description:
-; copies a byte from one spot in memory to another
-;
-; parameters:
-; rdi -> word to be read
-; rsi -> word to be written
-;
-; returned:
-; al = byte that was read; the rest of rax is zeroed
-; ------------------------------------------------------------------------------
-
-copy_byte:
-  xor eax, eax ; zero out so it returns fine
-  mov al, [rdi]
-  mov [rsi], al
-  ret
-
 ; ------------------------------------------------------------------------------
 ; utilities
 ; ------------------------------------------------------------------------------

twasm/asm/tests.asm

@@ -13,12 +13,6 @@ run_tests:
   mov rsi, .msg
   call print.test
 
-  call clear_test_arena
-  call test_copy_byte
-
-  call clear_test_arena
-  call test_copy_token
-
   call clear_test_arena
   call test_elemb
 
@@ -46,94 +40,6 @@ run_tests:
   ret
   .msg db "running test suite...", 0x0A, 0x00
 
-; ------------------------------------------------------------------------------
-; test_copy_byte
-;
-; description:
-; tests copy_byte described functionality
-; ------------------------------------------------------------------------------
-
-test_copy_byte:
-  mov rsi, .msg
-  call print.test
-
-  mov rdi, test_byte       ; byte to be copied
-  mov rsi, TEST_ARENA_ADDR ; location of test
-  call copy_byte
-
-  mov cx, [rsi]
-  and ax, 0xFF ; only compare bottom byte
-  and cx, 0xFF
-  cmp ax, cx ; compare returned byte to copied byte
-  jne .fail
-  cmp al, [test_byte] ; compare returned byte to expected byte
-  jne .fail
-
-  .pass:
-    mov rsi, msg_pass
-    call print
-    ret
-  .fail:
-    mov rsi, msg_fail
-    call print
-    ret
-  .msg db "test_copy_byte...", 0x00
-
-; ------------------------------------------------------------------------------
-; test_copy_token
-;
-; description:
-; tests copy_token described functionality
-; ------------------------------------------------------------------------------
-
-test_copy_token:
-  mov rsi, .msg
-  call print.test
-
-  ; test case: space terminated
-
-  mov rdi, test_token_space ; read buffer
-  mov rsi, TEST_ARENA_ADDR  ; write buffer
-  call copy_token
-
-  ; check reported final indicies with the expected final indicies
-  cmp rax, test_token_space + 8 ; last byte read
-  jne .fail
-  cmp rdx, TEST_ARENA_ADDR + 8 ; last byte written
-  jne .fail
-
-  mov rsi, TEST_ARENA_ADDR
-  mov rcx, [rsi]
-  cmp rcx, [test_token_space] ; check if copied token matches expected token
-  jne .fail                   ; if not, fail
-
-  ; test case: null terminated
-
-  mov rdi, test_token_null ; read buffer
-  mov rsi, TEST_ARENA_ADDR ; write buffer
-  call copy_token
-
-  ; check reported final indicies with the expected final indicies
-  cmp rax, test_token_null + 8 ; last byte read
-  jne .fail
-  cmp rdx, TEST_ARENA_ADDR + 8 ; last byte written
-  jne .fail
-
-  mov rsi, TEST_ARENA_ADDR
-  mov rcx, [rsi]
-  cmp rcx, [test_token_null] ; check if copied token matches expected token
-  jne .fail                  ; if not, fail
-
-  .pass:
-    mov rsi, msg_pass
-    call print
-    ret
-  .fail:
-    mov rsi, msg_fail
-    call print
-    ret
-  .msg db "test_copy_token...", 0x00
-
 ; ------------------------------------------------------------------------------
 ; test_elemb
 ;