diff options
Diffstat (limited to 'assembler/register.s')
| -rw-r--r-- | assembler/register.s | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/assembler/register.s b/assembler/register.s index dd0e1ae..348d8cf 100644 --- a/assembler/register.s +++ b/assembler/register.s @@ -1,62 +1,55 @@ -register4: +.syntax unified +.cpu cortex-m0plus +.thumb + +.type register, %function +.global register + +register: PUSH {LR} + MOV R4, R0 + LSLS R4, 1 + ADDS R4, ('0 + 1) 10: BL get_char MOVS R1, 'R - CMPS R0, R1 + CMP R0, R1 BNE 10b + BL uart_send 20: BL get_char MOVS R1, '0 - CMPS R0, R1 + CMP R0, R1 BLO 20b - MOVS R1, '9 - CMPS R0, R1 + CMP R0, R4 BHI 20b + BL uart_send MOVS R1, '1 - CMPS R0, R1 + CMP R0, R1 BNE 30f + MOVS R1, '7 + CMP R4, R1 + BEQ 30f 50: BL get_char + // CMP R0, ' // space is stop char BEQ 60f MOVS R1, '0 - CMPS R0, R1 + CMP R0, R1 BLO 50b MOVS R1, '5 - CMPS R0, R1 + CMP R0, R1 BHI 50b + BL uart_send ADDS R0, 10 30: SUBS R0, '0 - MOVS R4, 0 - ORRS R4, R0 + MOV R4, R0 40: BL get_char + // CMP R0, ' // space is stop char BNE 40b POP {PC} 60: MOVS R4, 1 POP {PC} - -register3: - PUSH {LR} -10: - BL get_char - MOVS R1, 'R - CMPS R0, R1 - BNE 10b -20: - BL get_char - MOVS R1, '0 - CMPS R0, R1 - BLO 20b - MOVS R1, '7 - CMPS R0, R1 - BHI 20b -30: - SUBS R0, '0 - MOVS R4, 0 - ORRS R4, R0 - BL get_char - BNE 40b - POP {PC} |