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51 lines
1.3 KiB
Ruby
51 lines
1.3 KiB
Ruby
module RubyVM::MJIT
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# ec: rdi
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# cfp: rsi
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# sp: rbx
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# scratch regs: rax
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class InsnCompiler
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# @param jit [RubyVM::MJIT::JITState]
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# @param ctx [RubyVM::MJIT::Context]
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# @param asm [RubyVM::MJIT::X86Assembler]
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def putnil(jit, ctx, asm)
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asm.mov([SP], Qnil)
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ctx.stack_size += 1
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KeepCompiling
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end
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# @param jit [RubyVM::MJIT::JITState]
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# @param ctx [RubyVM::MJIT::Context]
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# @param asm [RubyVM::MJIT::X86Assembler]
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def leave(jit, ctx, asm)
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assert_eq!(ctx.stack_size, 1)
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asm.comment('RUBY_VM_CHECK_INTS(ec)')
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asm.mov(:eax, [EC, C.rb_execution_context_t.offsetof(:interrupt_flag)])
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asm.test(:eax, :eax)
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asm.jz(not_interrupted = asm.new_label(:not_interrupted))
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Compiler.compile_exit(jit, ctx, asm) # TODO: use ocb
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asm.write_label(not_interrupted)
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asm.comment('pop stack frame')
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asm.add(CFP, C.rb_control_frame_t.size) # cfp = cfp + 1
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asm.mov([EC, C.rb_execution_context_t.offsetof(:cfp)], CFP) # ec->cfp = cfp
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# Return a value
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asm.mov(:rax, [SP])
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# Restore callee-saved registers
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asm.pop(SP)
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asm.ret
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EndBlock
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end
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private
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def assert_eq!(left, right)
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if left != right
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raise "'#{left.inspect}' was not '#{right.inspect}'"
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end
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end
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end
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end
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