diff options
| author | Kartik Agaram <vc@akkartik.com> | 2018-09-20 16:11:39 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-09-20 16:11:39 -0700 |
| commit | d783d42cf81a58783f904100a114ff312c7d04de (patch) | |
| tree | fc28920911ca99ce0279195078020d387c52a0ff /subx | |
| parent | 440a7be400fbfb384aa01de2911e803f8fd6f9ad (diff) | |
| download | mu-d783d42cf81a58783f904100a114ff312c7d04de.tar.gz | |
4556
Diffstat (limited to 'subx')
| -rwxr-xr-x | subx/apps/crenshaw2-1 | bin | 196 -> 275 bytes | |||
| -rw-r--r-- | subx/apps/crenshaw2-1.subx | 68 |
2 files changed, 58 insertions, 10 deletions
diff --git a/subx/apps/crenshaw2-1 b/subx/apps/crenshaw2-1 index 6d42dbec..c5fda5e0 100755 --- a/subx/apps/crenshaw2-1 +++ b/subx/apps/crenshaw2-1 Binary files differdiff --git a/subx/apps/crenshaw2-1.subx b/subx/apps/crenshaw2-1.subx index f78276ad..dc178bf5 100644 --- a/subx/apps/crenshaw2-1.subx +++ b/subx/apps/crenshaw2-1.subx @@ -16,11 +16,11 @@ # 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes # main: - # error(Error_integer) + # abort(Error_integer) # push args - 68/push . . . . . . . Error_integer/imm32 # push 5 + 68/push . . . . . . . Error_integer/imm32 # call - e8/call . . . . . . error/disp32 + e8/call . . . . . . abort/disp32 # discard arg 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP # exit(0) @@ -28,10 +28,50 @@ b8/copy . . . . . . . 1/imm32/exit # copy 1 to EAX cd/syscall . . . . . . . 0x80/imm8 # int 80h +# print error message and exit(1) +abort: # s : (address array byte) -> <void> + # error(s) + # push args + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . . 4/disp8 . # push *(ESP+4) + # call + e8/call . . . . . . error/disp32 + # discard arg + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP + # exit(1) + bb/copy . . . . . . . 1/imm32 # copy 1 to EBX + b8/copy . . . . . . . 1/imm32/exit # copy 1 to EAX + cd/syscall . . . . . . . 0x80/imm8 # int 80h + +# print out "Error: #{s}\n" to stderr error: # s : (address array byte) -> <void> + # write_stderr(Error) + # push args + 68/push . . . . . . . Error/imm32 + # call + e8/call . . . . . . write_stderr/disp32 + # discard arg + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP + # write_stderr(s) + # push args + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . . 4/disp8 . # push *(ESP+4) + # call + e8/call . . . . . . write_stderr/disp32 + # discard arg + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP + # write_stderr(Newline) + # push args + 68/push . . . . . . . Newline/imm32 + # call + e8/call . . . . . . write_stderr/disp32 + # discard arg + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP + # end + c3/return + +write_stderr: # s : (address array byte) -> <void> # write(2/stderr, (data) s+4, (size) *s) # fd = 2 (stderr) - bb/copy . . . . . . . 1/imm32 # copy 2 to EBX + bb/copy . . . . . . . 2/imm32 # copy 2 to EBX # x = s+4 8b/copy 1/mod/*+disp8 4/rm32/SIB 4/base/ESP 4/index/none . 1/r32/ECX 4/disp8 . # copy *(ESP+4) to ECX 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # add 4 to ECX @@ -41,14 +81,22 @@ error: # s : (address array byte) -> <void> # call write() b8/copy . . . . . . . 4/imm32/write # copy 1 to EAX cd/syscall . . . . . . . 0x80/imm8 # int 80h - # exit(1) - bb/copy . . . . . . . 1/imm32 # copy 1 to EBX - b8/copy . . . . . . . 1/imm32/exit # copy 1 to EAX - cd/syscall . . . . . . . 0x80/imm8 # int 80h + # end + c3/return == data +Newline: + # size + 01 00 00 00 + # data + 0a/newline +Error: # "Error: " : (array byte) + # size + 07 00 00 00 + # data + 45/E 72/r 72/r 6f/o 72/r 3a/: 20/space Error_integer: # "Integer" : (array byte) # size - 08 00 00 00 + 07 00 00 00 # data - 49 6e 74 65 67 65 72 10 + 49/I 6e/n 74/t 65/e 67/g 65/e 72/r |