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stop pinning self and frame

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before: r0-message , r1-self , r2-frame , r3-new_message , r4 + tmps
now: r0-message , r1-new_message , r2 + tmps
programs got smaller, less fuss
also fix in return implementation that got the address from the wrong
message
This commit is contained in:
Torsten Ruger
2015-10-18 17:20:19 +03:00
parent da5502e301
commit 6c7e4c0fe2
19 changed files with 98 additions and 94 deletions
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4
lib/phisol/compiler/assignment.rb
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@ -16,7 +16,9 @@ module Phisol
index = @method.has_local( name )
if(index)
# TODO, check type @method.locals[index].type
code = Register.set_slot(statement , v , :frame , index )
frame = use_reg(:Frame)
@method.source.add_code Register.get_slot(statement , :message , :frame , frame )
code = Register.set_slot(statement , v , frame , index )
end
end
if( code )

11
lib/phisol/compiler/call_site.rb
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@ -7,14 +7,15 @@ module Phisol
name = name.to_a.first
raise "not inside method " unless @method
reset_regs
if receiver
me = process( receiver.to_a.first )
else
me = Register.self_reg @method.for_class.name
end
#move the new message (that we need to populate to make a call) to std register
new_message = Register.resolve_to_register(:new_message)
@method.source.add_code Register.get_slot(@method, :message , :next_message , new_message )
if receiver
me = process( receiver.to_a.first )
else
me = use_reg @method.for_class.name
@method.source.add_code Register.get_slot(@method, :message , :receiver , me )
end
# move our receiver there
@method.source.add_code Register.set_slot( statement , me , :new_message , :receiver)
# load method name and set to new message (for exceptions/debug)

6
lib/phisol/compiler/field_access.rb
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@ -11,8 +11,10 @@ module Phisol
when :self
index = @clazz.object_layout.variable_index(field_name)
raise "field access, but no such field:#{field_name} for class #{@clazz.name}" unless index
value = use_reg(:Integer) #TODO, need types in layout
move = Register.get_slot(statement, :self , index , value )
value = use_reg(@clazz.name) #TODO incorrect, this is the self, but should be the type of variable at index
@method.source.add_code Register.get_slot(statement , :message , :receiver , value )
# reuse the register for next move
move = Register.get_slot(statement, value , index , value )
@method.source.add_code move
return value
when :message

10
lib/phisol/compiler/name_expression.rb
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@ -7,7 +7,11 @@ module Phisol
# whichever way this goes the result is stored in the return slot (as all compiles)
def on_name statement
name = statement.to_a.first
return Register.self_reg(@clazz.name ) if(name == :self)
if( name == :self)
ret = use_reg @clazz.name
@method.source.add_code Register.get_slot(statement , :message , :receiver , ret )
return ret
end
# either an argument, so it's stored in message
if( index = @method.has_arg(name))
ret = use_reg @method.arguments[index].type
@ -16,8 +20,10 @@ module Phisol
else # or a local so it is in the frame
index = @method.has_local( name )
if(index)
frame = use_reg :Frame
@method.source.add_code Register.get_slot(statement , :message , :frame , frame )
ret = use_reg @method.locals[index].type
@method.source.add_code Register.get_slot(statement , :frame , index , ret )
@method.source.add_code Register.get_slot(statement , frame , index , ret )
return ret
end
end

7
lib/register/builtin/integer.rb
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@ -3,6 +3,7 @@ module Register
module Builtin
module Integer
module ClassMethods
include AST::Sexp
def plus c
plus_function = Virtual::MethodSource.create_method(:Integer,:Integer,:plus , [:Integer] )
plus_function.source.set_return_type :Integer
@ -11,8 +12,12 @@ module Register
tmp = Register.tmp_reg :Integer
index = Register.arg_index 1
plus_function.source.add_code Register.get_slot( plus_function , :message , index , tmp )
add = Register::OperatorInstruction.new( plus_function, :add , Register.self_reg(:Integer) , tmp )
me = Register.tmp_reg :Integer
plus_function.source.add_code Register.get_slot(plus_function , :message , :receiver , me )
add = Register::OperatorInstruction.new( plus_function, :add , me , tmp )
plus_function.source.add_code add
plus_function.source.add_code Register.set_slot(plus_function , me , :message , :return_value )
return plus_function
end

11
lib/register/builtin/kernel.rb
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@ -13,12 +13,13 @@ module Register
function.source.blocks.last.codes.pop # no Method return
#Set up the Space as self upon init
space = Parfait::Space.object_space
function.source.add_code LoadConstant.new(function, space , Register.self_reg(:Space))
space_reg = Register.tmp_reg(:Space)
function.source.add_code LoadConstant.new(function, space , space_reg)
message_ind = Register.resolve_index( :space , :first_message )
# Load the message to new message register (r3)
function.source.add_code Register.get_slot( function , :self , message_ind , :new_message)
# Load the message to new message register (r1)
function.source.add_code Register.get_slot( function , space_reg , message_ind , :new_message)
# And store the space as the new self (so the call can move it back as self)
function.source.add_code Register.set_slot( function, :self , :new_message , :receiver)
function.source.add_code Register.set_slot( function, space_reg , :new_message , :receiver)
# now we are set up to issue a call to the main
function.source.add_code Virtual::MethodCall.new(Virtual.machine.space.get_main)
emit_syscall( function , :exit )
@ -63,8 +64,6 @@ module Register
# save the return value into the message
function.source.add_code Register.set_slot( function, return_tmp , :message , :return_value )
# and "unroll" self and frame
function.source.add_code Register.get_slot(function, :message , :receiver, :self )
function.source.add_code Register.get_slot(function, :message , :frame , :frame)
end
end
extend ClassMethods

1
lib/register/builtin/word.rb
View File

@ -4,6 +4,7 @@ module Register
module ClassMethods
def putstring context
function = Virtual::MethodSource.create_method(:Word,:Integer , :putstring , [] )
function.source.add_code Register.get_slot( function , :message , :receiver , :new_message )
Kernel.emit_syscall( function , :putstring )
function
end

2
lib/register/passes/call_implementation.rb
View File

@ -14,8 +14,6 @@ module Register
new_codes = []
# move the current new_message to message
new_codes << RegisterTransfer.new(code, Register.new_message_reg , Register.message_reg )
# "roll out" self into its register
new_codes << Register.get_slot( code , :message , :receiver, :self )
# do the register call
new_codes << FunctionCall.new( code , code.method )
block.replace(code , new_codes )

5
lib/register/passes/return_implementation.rb
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@ -8,11 +8,8 @@ module Register
new_codes << RegisterTransfer.new(code, Register.message_reg , Register.new_message_reg )
# and restore the message from saved value in new_message
new_codes << Register.get_slot(code,:new_message , :caller , :message )
# "roll out" self and frame into their registers
new_codes << Register.get_slot(code, :message , :receiver , :self )
new_codes << Register.get_slot(code, :message , :frame , :frame )
#load the return address into pc, affecting return. (other cpus have commands for this, but not arm)
new_codes << FunctionReturn.new( code , Register.message_reg , Register.resolve_index(:message , :return_address) )
new_codes << FunctionReturn.new( code , Register.new_message_reg , Register.resolve_index(:message , :return_address) )
block.replace(code , new_codes )
end
end

17
lib/register/register_value.rb
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@ -65,27 +65,16 @@ module Register
RegisterValue.new :r0 , :Message
end
# A register to hold the receiver of the current message, in oo terms the self. :r1
def self.self_reg type
RegisterValue.new :r1 , type
end
# The register to hold a possible frame of the currently executing method. :r2
# May be nil if the method has no local variables
def self.frame_reg
RegisterValue.new :r2 , :Frame
end
# The register we use to store the new message object is :r3
# The new message is the one being built, to be sent
def self.new_message_reg
RegisterValue.new :r3 , :Message
RegisterValue.new :r1 , :Message
end
# The first scratch register. There is a next_reg_use to get a next and next.
# Current thinking is that scratch is schatch between instructions
def self.tmp_reg type , value = nil
RegisterValue.new :r4 , type , value
RegisterValue.new :r2 , type , value
end
# The first arg is a class name (possibly lowercase) and the second an instance variable name.
@ -116,8 +105,10 @@ module Register
when :new_message
register = new_message_reg
when :self
raise "self good?"
register = self_reg(:Object) #TODO , probably have to get rid of this resolve method
when :frame
raise "frame good?"
register = frame_reg
else
raise "not recognized register reference #{reference}"

4
lib/virtual/passes/enter_implementation.rb
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@ -7,10 +7,6 @@ module Virtual
new_codes = []
# save return register to the message at instance return_address
new_codes << Register.save_return(code, :message , :return_address)
# and create a new frame if needed
unless code.method.locals.empty?
new_codes << Register.get_slot( code, :message , :frame , Register.resolve_to_register(:frame))
end
block.replace(code , new_codes )
end
end