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transformed object builtins

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This commit is contained in:
Torsten Rüger
2019-08-11 20:36:10 +03:00
parent 0725f02e9a
commit 3282e0ae06
5 changed files with 190 additions and 93 deletions
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200
lib/risc/builtin/object.rb
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@ -28,29 +28,42 @@ module Risc
# return the value passed in
def set_internal_word( context )
compiler = compiler_for(:Object , :set_internal_word , {at: :Integer, value: :Object} )
compiler.builder(compiler.source).build do
object! << message[:receiver]
integer! << message[:arguments]
object_reg! << integer[Parfait::NamedList.type_length + 1] #"value" is at index 1
integer << integer[Parfait::NamedList.type_length + 0] #"at" is at index 0
integer.reduce_int
object[integer] << object_reg
message[:return_value] << object_reg
end
compiler.add_mom( Mom::ReturnSequence.new)
compiler.add_code SetInternalWord.new("set_internal_word")
return compiler
end
class SetInternalWord < ::Mom::Instruction
def to_risc(compiler)
compiler.builder(compiler.source).build do
object! << message[:receiver]
integer! << message[:arguments]
object_reg! << integer[Parfait::NamedList.type_length + 1] #"value" is at index 1
integer << integer[Parfait::NamedList.type_length + 0] #"at" is at index 0
integer.reduce_int
object[integer] << object_reg
message[:return_value] << object_reg
end
return compiler
end
end
# every object needs a method missing.
# Even if it's just this one, sys_exit (later raise)
def _method_missing( context )
compiler = compiler_for(:Object,:method_missing ,{})
builder = compiler.builder(compiler.source)
builder.prepare_int_return # makes integer_tmp variable as return
emit_syscall( builder , :exit )
compiler.add_code MethodMissing.new("missing")
return compiler
end
class MethodMissing < ::Mom::Instruction
def to_risc(compiler)
builder = compiler.builder(compiler.source)
builder.prepare_int_return # makes integer_tmp variable as return
Builtin.emit_syscall( builder , :exit )
return compiler
end
end
# this is the really really first place the machine starts (apart from the jump here)
# it isn't really a function, ie it is jumped to (not called), exits and may not return
# so it is responsible for initial setup:
@ -58,95 +71,108 @@ module Risc
# - call main, ie set up message for that etc
# - exit (exit_sequence) which passes a machine int out to c
def __init__( context )
compiler = MethodCompiler.compiler_for_class(:Object,:__init__ ,
compiler = Mom::MethodCompiler.compiler_for_class(:Object,:__init__ ,
Parfait::NamedList.type_for({}) , Parfait::NamedList.type_for({}))
builder = compiler.builder(compiler.source)
builder.build do
factory! << Parfait.object_space.get_factory_for(:Message)
message << factory[:next_object]
next_message! << message[:next_message]
factory[:next_object] << next_message
end
Mom::MessageSetup.new(Parfait.object_space.get_main).build_with( builder )
builder.build do
message << message[:next_message]
space? << Parfait.object_space
message[:receiver] << space
end
exit_label = Risc.label(compiler.source , "#{compiler.receiver_type.object_class.name}.#{compiler.source.name}" )
ret_tmp = compiler.use_reg(:Label).set_builder(builder)
builder.build do
ret_tmp << exit_label
message[:return_address] << ret_tmp
add_code Risc.function_call( "__init__ issue call" , Parfait.object_space.get_main)
add_code exit_label
end
compiler.reset_regs
exit_sequence(builder)
compiler.add_code MethodMissing.new("missing")
return compiler
end
class Init < ::Mom::Instruction
def to_risc(compiler)
builder = compiler.builder(compiler.source)
builder.build do
factory! << Parfait.object_space.get_factory_for(:Message)
message << factory[:next_object]
next_message! << message[:next_message]
factory[:next_object] << next_message
end
Mom::MessageSetup.new(Parfait.object_space.get_main).build_with( builder )
builder.build do
message << message[:next_message]
space? << Parfait.object_space
message[:receiver] << space
end
exit_label = Risc.label(compiler.source , "#{compiler.receiver_type.object_class.name}.#{compiler.source.name}" )
ret_tmp = compiler.use_reg(:Label).set_builder(builder)
builder.build do
ret_tmp << exit_label
message[:return_address] << ret_tmp
add_code Risc.function_call( "__init__ issue call" , Parfait.object_space.get_main)
add_code exit_label
end
compiler.reset_regs
exit_sequence(builder)
return compiler
end
end
# the exit function
# mainly calls exit_sequence
def exit( context )
compiler = compiler_for(:Object,:exit ,{})
builder = compiler.builder(compiler.source)
builder.prepare_int_return # makes integer_tmp variable as return
exit_sequence(builder)
compiler.add_code Exit.new("exit")
return compiler
end
# a sort of inline version of exit method.
# Used by exit and __init__ (so it doesn't have to call it)
# Assumes int return value and extracts the fixnum for process exit code
def exit_sequence(builder)
save_message( builder )
builder.build do
message << message[:return_value]
message.reduce_int
add_code Syscall.new("emit_syscall(exit)", :exit )
class Exit < ::Mom::Instruction
def to_risc(compiler)
builder = compiler.builder(compiler.source)
builder.prepare_int_return # makes integer_tmp variable as return
Builtin.exit_sequence(builder)
return compiler
end
end
# emit the syscall with given name
# there is a Syscall instruction, but the message has to be saved and restored
def emit_syscall( builder , name )
save_message( builder )
builder.add_code Syscall.new("emit_syscall(#{name})", name )
restore_message(builder)
return unless (@clazz and @method)
builder.add_code Risc.label( "#{@clazz.name}.#{@message.name}" , "return_syscall" )
end
# save the current message, as the syscall destroys all context
#
# This relies on linux to save and restore all registers
#
def save_message(builder)
r8 = RegisterValue.new( :r8 , :Message).set_builder(builder)
builder.build {r8 << message}
end
# restore the message that we save in r8
# before th restore, the syscall return, a fixnum, is saved
# The caller of this method is assumed to caal prepare_int_return
# so that the return value already has an integer instance
# This instance is filled with os return value
def restore_message(builder)
r8 = RegisterValue.new( :r8 , :Message)
builder.build do
integer_reg! << message
message << r8
integer_2! << message[:return_value]
integer_2[Parfait::Integer.integer_index] << integer_reg
end
end
end
extend ClassMethods
end
# emit the syscall with given name
# there is a Syscall instruction, but the message has to be saved and restored
def self.emit_syscall( builder , name )
save_message( builder )
builder.add_code Syscall.new("emit_syscall(#{name})", name )
restore_message(builder)
return unless (@clazz and @method)
builder.add_code Risc.label( "#{@clazz.name}.#{@message.name}" , "return_syscall" )
end
# a sort of inline version of exit method.
# Used by exit and __init__ (so it doesn't have to call it)
# Assumes int return value and extracts the fixnum for process exit code
def self.exit_sequence(builder)
save_message( builder )
builder.build do
message << message[:return_value]
message.reduce_int
add_code Syscall.new("emit_syscall(exit)", :exit )
end
end
# save the current message, as the syscall destroys all context
#
# This relies on linux to save and restore all registers
#
def self.save_message(builder)
r8 = RegisterValue.new( :r8 , :Message).set_builder(builder)
builder.build {r8 << message}
end
# restore the message that we save in r8
# before th restore, the syscall return, a fixnum, is saved
# The caller of this method is assumed to caal prepare_int_return
# so that the return value already has an integer instance
# This instance is filled with os return value
def self.restore_message(builder)
r8 = RegisterValue.new( :r8 , :Message)
builder.build do
integer_reg! << message
message << r8
integer_2! << message[:return_value]
integer_2[Parfait::Integer.integer_index] << integer_reg
end
end
end
end