instruction at the beginning of each function that has the attribute, allowing
the function to be easily hooked and/or patched.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117264
91177308-0d34-0410-b5e6-
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function into callers whenever possible, ignoring any active inlining size
threshold for this caller.</dd>
+ <dt><tt><b>hotpatch</b></tt></dt>
+ <dd>This attribute indicates that the prologue should contain a 'hotpatch'
+ sequence at the beginning. This is the same sequence used in the
+ system DLLs in Microsoft Windows XP Service Pack 2 and higher.</dd>
+
<dt><tt><b>inlinehint</b></tt></dt>
<dd>This attribute indicates that the source code contained a hint that inlining
this function is desirable (such as the "inline" keyword in C/C++). It
///of alignment with +1 bias
///0 means unaligned (different from
///alignstack(1))
+const Attributes Hotpatch = 1<<29; ///< Function should have special
+ ///'hotpatch' sequence in prologue
/// @brief Attributes that only apply to function parameters.
const Attributes ParameterOnly = ByVal | Nest | StructRet | NoCapture;
/// be used on return values or function parameters.
const Attributes FunctionOnly = NoReturn | NoUnwind | ReadNone | ReadOnly |
NoInline | AlwaysInline | OptimizeForSize | StackProtect | StackProtectReq |
- NoRedZone | NoImplicitFloat | Naked | InlineHint | StackAlignment;
+ NoRedZone | NoImplicitFloat | Naked | InlineHint | StackAlignment |
+ Hotpatch;
/// @brief Parameter attributes that do not apply to vararg call arguments.
const Attributes VarArgsIncompatible = StructRet;
KEYWORD(noredzone);
KEYWORD(noimplicitfloat);
KEYWORD(naked);
+ KEYWORD(hotpatch);
KEYWORD(type);
KEYWORD(opaque);
case lltok::kw_noredzone: Attrs |= Attribute::NoRedZone; break;
case lltok::kw_noimplicitfloat: Attrs |= Attribute::NoImplicitFloat; break;
case lltok::kw_naked: Attrs |= Attribute::Naked; break;
+ case lltok::kw_hotpatch: Attrs |= Attribute::Hotpatch; break;
case lltok::kw_alignstack: {
unsigned Alignment;
kw_noredzone,
kw_noimplicitfloat,
kw_naked,
+ kw_hotpatch,
kw_type,
kw_opaque,
Result += "noimplicitfloat ";
if (Attrs & Attribute::Naked)
Result += "naked ";
+ if (Attrs & Attribute::Hotpatch)
+ Result += "hotpatch ";
if (Attrs & Attribute::StackAlignment) {
Result += "alignstack(";
Result += utostr(Attribute::getStackAlignmentFromAttrs(Attrs));