diff options
Diffstat (limited to 'test.subv')
| -rw-r--r-- | test.subv | 45 |
1 files changed, 26 insertions, 19 deletions
@@ -2,23 +2,30 @@ main: # load 0x10010000 (UART0) into t0 37/lui 5/rd/t0 0x10010/imm20 - # store 0x48 (H) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 48/imm12 + + # x4 = &message + # . load high bits + 37/lui 4/rd/x4 Message/20/imm32>>12 + # . add low bits + 13/opi 0/subop/add 4/rd/x4 4/rs/x4 Message/12/imm32 +print:loop: + # load unsigned byte at x4 + 03/load 4/subop/lbu 6/rd/t1 4/rs/x4 0/imm12 + # break loop if zero + 63/branch 0/subop/== 6/rs/t1 0/rs/x0 print:break/off13 + # print char 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # store 0x65 (e) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 65/imm12 - 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # store 0x6c (l) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 6c/imm12 - 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # store 0x6c (l) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 6c/imm12 - 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # store 0x6f (o) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 6f/imm12 - 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # store 0x0a (\n) in UART0+0 - 13/opi 0/subop/add 6/rd/t1 0/rs/x0 0a/imm12 - 23/store 2/subop/word 5/rs/t0 6/rs/t1 0/off12 - # jump back up to the top - 6f/jal 0/rd/x0 main/off21 + # increment x4 + 13/opi 0/subop/add 4/rd/x4 4/rs/x4 1/imm12 + # jump back up + 6f/jal 0/rd/x0 print:loop/off21 +print:break: + +loop: + # infinite loop + 6f/jal 0/rd/x0 loop/off21 + +== data 0x80001000 +Message: + # "Hello World\n\0" + 48/8 65/8 6c/8 6c/8 6f/8 20/8 77/8 6f/8 72/8 6c/8 64/8 21/8 0a/8 00/8 |