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- Move the stackprotector intrinsic to the general section.
- Rewrite the sentence to make it look as if English is my first language. llvm-svn: 59592
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@ -214,11 +214,6 @@
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<li><a href="#int_it">'<tt>llvm.init.trampoline</tt>' Intrinsic</a></li>
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</ol>
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</li>
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<li><a href="#int_stackprotect">Stack Protector Intrinsic</a>
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<ol>
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<li><a href="#int_ssp">'<tt>llvm.stackprotector</tt>' Intrinsic</a></li>
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</ol>
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</li>
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<li><a href="#int_atomics">Atomic intrinsics</a>
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<ol>
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<li><a href="#int_memory_barrier"><tt>llvm.memory_barrier</tt></a></li>
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@ -239,11 +234,13 @@
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<li><a href="#int_general">General intrinsics</a>
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<ol>
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<li><a href="#int_var_annotation">
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<tt>llvm.var.annotation</tt>' Intrinsic</a></li>
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'<tt>llvm.var.annotation</tt>' Intrinsic</a></li>
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<li><a href="#int_annotation">
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<tt>llvm.annotation.*</tt>' Intrinsic</a></li>
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'<tt>llvm.annotation.*</tt>' Intrinsic</a></li>
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<li><a href="#int_trap">
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<tt>llvm.trap</tt>' Intrinsic</a></li>
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'<tt>llvm.trap</tt>' Intrinsic</a></li>
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<li><a href="#int_stackprotector">
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'<tt>llvm.stackprotector</tt>' Intrinsic</a></li>
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</ol>
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</li>
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</ol>
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@ -5807,54 +5804,6 @@ declare i8* @llvm.init.trampoline(i8* <tramp>, i8* <func>, i8* <n
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</p>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_subsection">
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<a name="int_stackprotect">Stack Protector Intrinsic</a>
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</div>
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<div class="doc_text">
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<p>
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This intrinsic is used when stack protectors are required. LLVM generates a
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call to load the randomized stack protector guard's value. The intrinsic is
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used so that LLVM can ensure that the stack guard is placed onto the stack in
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the appropriate place—before local variables are allocated on the stack.
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</p>
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</div>
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<!-- _______________________________________________________________________ -->
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<div class="doc_subsubsection">
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<a name="int_ssp">'<tt>llvm.stackprotector</tt>' Intrinsic</a>
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</div>
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<div class="doc_text">
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<h5>Syntax:</h5>
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<pre>
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declare void @llvm.stackprotector( i8* <guard>, i8** <slot> )
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</pre>
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<h5>Overview:</h5>
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<p>
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The <tt>llvm.stackprotector</tt> intrinsic takes the <tt>guard</tt> and stores
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it onto the stack at <tt>slot</tt>. The stack slot is adjusted to ensure that
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it's before local variables are allocated on the stack.
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</p>
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<h5>Arguments:</h5>
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<p>
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The <tt>llvm.stackprotector</tt> intrinsic requires two pointer arguments. The
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first argument is the value loaded from the stack guard
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<tt>@__stack_chk_guard</tt>. The second variable is an <tt>alloca</tt> that
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has enough space to hold the value of the guard.
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</p>
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<h5>Semantics:</h5>
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<p>
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This intrinsic causes the prologue/epilogue inserter to force the position of
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the <tt>AllocaInst</tt> stack slot to be before local variables on the
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stack. This is to ensure that if a local variable on the stack is overwritten,
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it will destroy the value of the guard. When the function exits, the guard on
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the stack is checked against the original guard. If they're different, then
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the program aborts by calling the <tt>__stack_chk_fail()</tt> function.
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</p>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_subsection">
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<a name="int_atomics">Atomic Operations and Synchronization Intrinsics</a>
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@ -6472,6 +6421,40 @@ call of the abort() function.
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</p>
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</div>
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<!-- _______________________________________________________________________ -->
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<div class="doc_subsubsection">
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<a name="int_ssp">'<tt>llvm.stackprotector</tt>' Intrinsic</a>
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</div>
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<div class="doc_text">
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<h5>Syntax:</h5>
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<pre>
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declare void @llvm.stackprotector( i8* <guard>, i8** <slot> )
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</pre>
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<h5>Overview:</h5>
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<p>
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The <tt>llvm.stackprotector</tt> intrinsic takes the <tt>guard</tt> and stores
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it onto the stack at <tt>slot</tt>. The stack slot is adjusted to ensure that
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it is placed on the stack before local variables.
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</p>
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<h5>Arguments:</h5>
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<p>
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The <tt>llvm.stackprotector</tt> intrinsic requires two pointer arguments. The
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first argument is the value loaded from the stack guard
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<tt>@__stack_chk_guard</tt>. The second variable is an <tt>alloca</tt> that
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has enough space to hold the value of the guard.
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</p>
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<h5>Semantics:</h5>
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<p>
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This intrinsic causes the prologue/epilogue inserter to force the position of
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the <tt>AllocaInst</tt> stack slot to be before local variables on the
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stack. This is to ensure that if a local variable on the stack is overwritten,
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it will destroy the value of the guard. When the function exits, the guard on
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the stack is checked against the original guard. If they're different, then
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the program aborts by calling the <tt>__stack_chk_fail()</tt> function.
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</p>
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</div>
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<!-- *********************************************************************** -->
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<hr>
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<address>
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