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implement OR for r/m32, r32 and r/m8, imm8

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Sami Samhuri 2010-02-14 18:56:43 -08:00
parent e3b220dd2d
commit 509c7a88ce
1 changed files with 17 additions and 0 deletions
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17
asm/binary.rb
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@ -851,6 +851,23 @@ module Assembler
end
alias_method :and, :and_
def or_(dest, src)
if rm?(dest) && register?(src)
asm do
emit_byte(0x9)
emit_modrm(dest, src.regnum)
end
elsif rm?(dest, 8) && immediate?(src, 8)
asm do
emit_byte(0x80)
emit_modrm(dest, 1)
emit_byte(src)
end
else
raise "unsupported OR instruction: dest=#{dest.inspect}, src=#{src.inspect}"
end
end
alias_method :or, :or_
def xor(dest, src)
# xor r/m32, reg32