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This commit is contained in:
Kartik Agaram 2018-09-20 16:23:51 -07:00
parent d783d42cf8
commit b09d6b5db0
2 changed files with 17 additions and 4 deletions
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subx/apps/crenshaw2-1.subx
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@ -28,7 +28,8 @@
b8/copy . . . . . . . 1/imm32/exit # copy 1 to EAX
cd/syscall . . . . . . . 0x80/imm8 # int 80h
# print error message and exit(1)
# print error message and exit
# really maps to the 'Expected' function in Crenshaw
abort: # s : (address array byte) -> <void>
# error(s)
# push args
@ -42,9 +43,9 @@ abort: # s : (address array byte) -> <void>
b8/copy . . . . . . . 1/imm32/exit # copy 1 to EAX
cd/syscall . . . . . . . 0x80/imm8 # int 80h
# print out "Error: #{s}\n" to stderr
# print out "Error: #{s} expected\n" to stderr
error: # s : (address array byte) -> <void>
# write_stderr(Error)
# write_stderr("Error: ")
# push args
68/push . . . . . . . Error/imm32
# call
@ -58,7 +59,14 @@ error: # s : (address array byte) -> <void>
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)
# write_stderr(" expected")
# push args
68/push . . . . . . . Expected_suffix/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("\n")
# push args
68/push . . . . . . . Newline/imm32
# call
@ -95,6 +103,11 @@ Error: # "Error: " : (array byte)
07 00 00 00
# data
45/E 72/r 72/r 6f/o 72/r 3a/: 20/space
Expected_suffix: # " expected" : (array byte)
# size
09 00 00 00
# data
20/space 65/e 78/x 70/p 65/e 63/c 74/t 65/e 64/d
Error_integer: # "Integer" : (array byte)
# size
07 00 00 00