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lift the nodes out of the parser

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This commit is contained in:
Torsten Ruger
2014-04-16 12:03:39 +03:00
parent 1564f9b439
commit 69b0f7a0e3
8 changed files with 103 additions and 89 deletions
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10
lib/asm/arm/builder_a.rb
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@@ -50,7 +50,7 @@ module Asm
# Build representation for source value
def build_operand(arg)
if (arg.is_a?(Asm::Parser::NumLiteralArgNode))
if (arg.is_a?(Asm::NumLiteralArgNode))
if (arg.value.fits_u8?)
# no shifting needed
@operand = arg.value
@@ -61,10 +61,10 @@ module Asm
else
raise Asm::AssemblyError.new(Asm::ERRSTR_NUMERIC_TOO_LARGE, arg)
end
elsif (arg.is_a?(Asm::Parser::RegisterArgNode))
elsif (arg.is_a?(Asm::RegisterArgNode))
@operand = reg_ref(arg)
@i = 0
elsif (arg.is_a?(Asm::Parser::ShiftNode))
elsif (arg.is_a?(Asm::ShiftNode))
rm_ref = reg_ref(arg.argument)
@i = 0
shift_op = {'lsl' => 0b000, 'lsr' => 0b010, 'asr' => 0b100,
@@ -75,12 +75,12 @@ module Asm
end
arg1 = arg.value
if (arg1.is_a?(Asm::Parser::NumLiteralArgNode))
if (arg1.is_a?(Asm::NumLiteralArgNode))
if (arg1.value >= 32)
raise Asm::AssemblyError.new('cannot shift by more than 31', arg1)
end
shift_imm = arg1.value
elsif (arg1.is_a?(Asm::Parser::RegisterArgNode))
elsif (arg1.is_a?(Asm::RegisterArgNode))
shift_op |= 0x1;
shift_imm = reg_ref(arg1) << 1
elsif (arg.type == 'rrx')