diff options
| -rw-r--r-- | twasm/asm/main.asm | 65 | ||||
| -rw-r--r-- | twasm/asm/tests.asm | 85 |
2 files changed, 150 insertions, 0 deletions
diff --git a/twasm/asm/main.asm b/twasm/asm/main.asm index ead107e..4b23759 100644 --- a/twasm/asm/main.asm +++ b/twasm/asm/main.asm @@ -913,6 +913,71 @@ evaluate_constant: ret ; ------------------------------------------------------------------------------ +; identify_register +; +; description: +; takes a register in ascii-encoded text and returns its token ID or +; UNRECOGNISED_TOKEN_ID if not recognised +; +; parameters: +; edi = register to be searched +; +; returned: +; ax = register's token ID or UNRECOGNISED_TOKEN_ID +; ------------------------------------------------------------------------------ + +identify_register: + xor eax, eax ; tokens.registers + eax -> entry in tokens.registers + .loop: + cmp eax, (tokens.registers_end - tokens.registers) + jge .not_found + + cmp edi, [tokens.registers + eax] + je .found + + add eax, 6 + jmp .loop + .found: + mov ax, [tokens.registers + eax + 4] + ret + .not_found: + mov ax, UNRECOGNISED_TOKEN_ID + ret + +; ------------------------------------------------------------------------------ +; identify_operator +; TODO combine with identify_register +; +; description: +; takes an operator in ascii-encoded text and returns its token ID or +; UNRECOGNISED_TOKEN_ID if not recognised +; +; parameters: +; edi = operator to be searched +; +; returned: +; ax = operator's token ID or UNRECOGNISED_TOKEN_ID +; ------------------------------------------------------------------------------ + +identify_operator: + xor eax, eax ; tokens.operators + eax -> entry in tokens.operators + .loop: + cmp eax, (tokens.operators_end - tokens.operators) + jge .not_found + + cmp edi, [tokens.operators + eax] + je .found + + add eax, 6 + jmp .loop + .found: + mov ax, [tokens.operators + eax + 4] + ret + .not_found: + mov ax, UNRECOGNISED_TOKEN_ID + ret + +; ------------------------------------------------------------------------------ ; utilities ; ------------------------------------------------------------------------------ diff --git a/twasm/asm/tests.asm b/twasm/asm/tests.asm index c4cd545..49ffba4 100644 --- a/twasm/asm/tests.asm +++ b/twasm/asm/tests.asm @@ -34,6 +34,12 @@ run_tests: call clear_test_arena call test_evaluate_constant + call clear_test_arena + call test_identify_register + + call clear_test_arena + call test_identify_operator + ret .msg db "running test suite...", 0x0A, 0x00 @@ -405,6 +411,7 @@ test_evaluate_constant: .case0c_solution dq "char" .case1c db '"chars"' .case1c_solution dq "chars" + ; " wow my editor really doesn't like highlighting quotes correctly .case0q db "0q31103755242102" .case0q_solution dq 0q31103755242102 @@ -412,6 +419,84 @@ test_evaluate_constant: .case0b db "0b0110011001101001011100100111001101110100001000000011011000110100" .case0b_solution dq 0b0110011001101001011100100111001101110100001000000011011000110100 + +; ------------------------------------------------------------------------------ +; test_identify_register +; +; description: +; tests identify_register described funtionality +; ------------------------------------------------------------------------------ + +test_identify_register: + mov rsi, .msg + call print.test + + mov edi, "rcx" + call identify_register + cmp ax, 0x0002 + jne .fail + + mov edi, "RaNd" + call identify_register + cmp ax, UNRECOGNISED_TOKEN_ID + jne .fail + + mov edi, "" + call identify_register + cmp ax, UNRECOGNISED_TOKEN_ID + jne .fail + + .pass: + mov rsi, msg_pass + call print + ret + .fail: + mov rsi, msg_fail + call print + ret + .msg db "test_identify_register...", 0x00 + +; ------------------------------------------------------------------------------ +; test_identify_operator +; +; description: +; tests identify_operator described funtionality +; ------------------------------------------------------------------------------ + +test_identify_operator: + mov rsi, .msg + call print.test + + mov edi, "xor" + call identify_operator + cmp ax, 0x0053 + jne .fail + + mov edi, [tokens.operators_end] + call identify_operator + cmp ax, UNRECOGNISED_TOKEN_ID + jne .fail + + mov edi, "RaNd" + call identify_operator + cmp ax, UNRECOGNISED_TOKEN_ID + jne .fail + + mov edi, "" + call identify_operator + cmp ax, UNRECOGNISED_TOKEN_ID + jne .fail + + .pass: + mov rsi, msg_pass + call print + ret + .fail: + mov rsi, msg_fail + call print + ret + .msg db "test_identify_operator...", 0x00 + msg_pass: db 0x0A times (TEST_LINE_LENGTH + .start - .end) db " ", ; right align |