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named syscall register

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This commit is contained in:
Torsten Ruger 2014-06-24 12:40:49 +03:00
parent 17904d8e02
commit 98de7404ef
1 changed files with 2 additions and 1 deletions
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3
lib/arm/arm_machine.rb
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@ -13,6 +13,7 @@ module Arm
RETURN_REG = :r0
TYPE_REG = :r1
RECEIVER_REG = :r2
SYSCALL_REG = :r7
def return_register
RETURN_REG
@ -91,7 +92,7 @@ module Arm
def syscall block , num
# This is very arm specific, syscall number is passed in r7, other arguments like a c call ie 0 and up
sys = Vm::Integer.new( Vm::RegisterReference.new(:r7) )
sys = Vm::Integer.new( Vm::RegisterReference.new(SYSCALL_REG) )
ret = Vm::Integer.new( Vm::RegisterReference.new(RETURN_REG) )
block.add_code mov( sys , num )
block.add_code swi( 0 )