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An instruction is leaf if it has no rb_funcall inside. In order to check this property, we introduce stack canary which is a random number collected at runtime. Stack top is always filled with this number and checked for stack smashing operations, when VM_CHECK_MODE. [GH-1947] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64677 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
20 lines
767 B
Text
20 lines
767 B
Text
/* -*- mode:c; style:ruby; coding: utf-8; indent-tabs-mode: nil -*- */
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%# Copyright (c) 2017 Urabe, Shyouhei. All rights reserved.
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%#
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%# This file is a part of the programming language Ruby. Permission is hereby
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%# granted, to either redistribute and/or modify this file, provided that the
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%# conditions mentioned in the file COPYING are met. Consult the file for
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%# details.
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<%= render 'copyright' %>
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<%= render 'notice', locals: {
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this_file: 'contains instruction information for yarv instruction sequence.',
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edit: __FILE__,
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} %>
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<%= render 'insn_type_chars' %>
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<%= render 'insn_name_info' %>
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<%= render 'insn_len_info' %>
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<%= render 'insn_operand_info' %>
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<%= render 'leaf_helpers' %>
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<%= render 'attributes' %>
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<%= render 'insn_stack_increase' %>
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