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fix the putstring sys call indexing

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index 0 is the marker word , so like in some, all indexes 1 based
works :-)
This commit is contained in:
Torsten Ruger
2015-11-15 22:03:06 +02:00
parent 8e82da0b61
commit f50d7b57a4
4 changed files with 4 additions and 6 deletions
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5
lib/arm/translator.rb
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@ -128,9 +128,8 @@ module Arm
end
def putstring int_code
codes = ArmMachine.ldr( :r1 , Register.message_reg, 4 * Register.resolve_index(:message , :receiver) - 4)
codes.append ArmMachine.ldr( :r2 , :r1 , 4 ) # String length
codes.append ArmMachine.add( :r1 , :r1 , 8 ) # adjust for object header
codes = ArmMachine.ldr( :r2 , :r1 , 8 ) # String length
codes.append ArmMachine.add( :r1 , :r1 , 12 ) # adjust for object header
codes.append ArmMachine.mov( :r0 , 1 ) # write to stdout == 1
syscall(int_code , codes )
end