Changes in directory llvm/lib/CodeGen:
AsmPrinter.cpp updated: 1.31 -> 1.32
---
Log message:
Add a couple more fields, move ctor init list to .cpp file, add support
for emitting the ctor/dtor list for common targets.
---
Diffs of the changes: (+70 -0)
AsmPrinter.cpp | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 70 insertions(+)
Index: llvm/lib/CodeGen/AsmPrinter.cpp
diff -u llvm/lib/CodeGen/AsmPrinter.cpp:1.31
llvm/lib/CodeGen/AsmPrinter.cpp:1.32
--- llvm/lib/CodeGen/AsmPrinter.cpp:1.31 Fri Dec 9 13:28:49 2005
+++ llvm/lib/CodeGen/AsmPrinter.cpp Tue Dec 13 00:32:10 2005
@@ -21,6 +21,35 @@
#include "llvm/Target/TargetMachine.h"
using namespace llvm;
+AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm)
+: FunctionNumber(0), O(o), TM(tm),
+ CommentString("#"),
+ GlobalPrefix(""),
+ PrivateGlobalPrefix("."),
+ GlobalVarAddrPrefix(""),
+ GlobalVarAddrSuffix(""),
+ FunctionAddrPrefix(""),
+ FunctionAddrSuffix(""),
+ ZeroDirective("\t.zero\t"),
+ AsciiDirective("\t.ascii\t"),
+ AscizDirective("\t.asciz\t"),
+ Data8bitsDirective("\t.byte\t"),
+ Data16bitsDirective("\t.short\t"),
+ Data32bitsDirective("\t.long\t"),
+ Data64bitsDirective("\t.quad\t"),
+ AlignDirective("\t.align\t"),
+ AlignmentIsInBytes(true),
+ SwitchToSectionDirective("\t.section\t"),
+ ConstantPoolSection("\t.section .rodata\n"),
+ StaticCtorsSection("\t.section .ctors,\"aw\",@progbits"),
+ StaticDtorsSection("\t.section .dtors,\"aw\",@progbits"),
+ LCOMMDirective(0),
+ COMMDirective("\t.comm\t"),
+ COMMDirectiveTakesAlignment(true),
+ HasDotTypeDotSizeDirective(true) {
+}
+
+
/// SwitchSection - Switch to the specified section of the executable if we
/// are not already in it!
///
@@ -80,6 +109,47 @@
}
}
+/// EmitSpecialLLVMGlobal - Check to see if the specified global is a
+/// special global used by LLVM. If so, emit it and return true, otherwise
+/// do nothing and return false.
+bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
+ assert(GV->hasInitializer() && GV->hasAppendingLinkage() &&
+ "Not a special LLVM global!");
+
+ if (GV->getName() == "llvm.used")
+ return true; // No need to emit this at all.
+
+ if (GV->getName() == "llvm.global_ctors") {
+ SwitchSection(StaticCtorsSection, 0);
+ EmitAlignment(2, 0);
+ EmitXXStructorList(GV->getInitializer());
+ return true;
+ }
+
+ if (GV->getName() == "llvm.global_dtors") {
+ SwitchSection(StaticDtorsSection, 0);
+ EmitAlignment(2, 0);
+ EmitXXStructorList(GV->getInitializer());
+ return true;
+ }
+
+ return false;
+}
+
+/// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
+/// function pointers, ignoring the init priority.
+void AsmPrinter::EmitXXStructorList(Constant *List) {
+ // Should be an array of '{ int, void ()* }' structs. The first value is the
+ // init priority, which we ignore.
+ if (!isa<ConstantArray>(List)) return;
+ ConstantArray *InitList = cast<ConstantArray>(List);
+ for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
+ if (ConstantStruct *CS =
dyn_cast<ConstantStruct>(InitList->getOperand(i))){
+ if (CS->getNumOperands() != 2) return; // Not array of 2-element
structs.
+ // Emit the function pointer.
+ EmitGlobalConstant(CS->getOperand(1));
+ }
+}
// EmitAlignment - Emit an alignment directive to the specified power of two.
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