6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-31 09:11:13 +00:00
Code Issues Projects Releases Wiki Activity

Teach the PPC asmwriter to honor globals with explicit section requests.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-11-14 18:52:46 +00:00
parent c590e9afc9
commit ac7fd7fcc6
1 changed files with 32 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
lib/Target/PowerPC/PPCAsmPrinter.cpp
View File

@ -43,9 +43,11 @@ using namespace llvm;
namespace {
Statistic<> EmittedInsts("asm-printer", "Number of machine instrs printed");
struct PPCAsmPrinter : public AsmPrinter {
class PPCAsmPrinter : public AsmPrinter {
std::string CurSection;
public:
std::set<std::string> FnStubs, GVStubs, LinkOnceStubs;
PPCAsmPrinter(std::ostream &O, TargetMachine &TM)
: AsmPrinter(O, TM), FunctionNumber(0) {}
@ -61,6 +63,25 @@ namespace {
return static_cast<PPCTargetMachine&>(TM);
}
/// SwitchSection - Switch to the specified section of the executable if we
/// are not already in it!
///
void SwitchSection(const char *NewSection, const GlobalValue *GV) {
std::string NS;
if (GV && GV->hasSection())
NS = ".section " + GV->getSection();
else
NS = NewSection;
if (CurSection != NS) {
CurSection = NS;
if (!CurSection.empty())
O << "\t" << CurSection << "\n";
}
}
unsigned enumRegToMachineReg(unsigned enumReg) {
switch (enumReg) {
default: assert(0 && "Unhandled register!"); break;
@ -227,18 +248,6 @@ namespace {
};
} // end of anonymous namespace
// SwitchSection - Switch to the specified section of the executable if we are
// not already in it!
//
static void SwitchSection(std::ostream &OS, std::string &CurSection,
const char *NewSection) {
if (CurSection != NewSection) {
CurSection = NewSection;
if (!CurSection.empty())
OS << "\t" << NewSection << "\n";
}
}
/// createDarwinAsmPrinterPass - Returns a pass that prints the PPC assembly
/// code for a MachineFunction to the given output stream, in a format that the
/// Darwin assembler can deal with.
@ -387,9 +396,10 @@ bool DarwinAsmPrinter::runOnMachineFunction(MachineFunction &MF) {
printConstantPool(MF.getConstantPool());
// Print out labels for the function.
O << "\t.text\n";
const Function *F = MF.getFunction();
SwitchSection(".text", F);
emitAlignment(4);
if (!MF.getFunction()->hasInternalLinkage())
if (!F->hasInternalLinkage())
O << "\t.globl\t" << CurrentFnName << "\n";
O << CurrentFnName << ":\n";
@ -444,6 +454,7 @@ void DarwinAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
bool DarwinAsmPrinter::doInitialization(Module &M) {
if (TM.getSubtarget<PPCSubtarget>().isGigaProcessor())
O << "\t.machine ppc970\n";
SwitchSection("", 0);
AsmPrinter::doInitialization(M);
// Darwin wants symbols to be quoted if they have complex names.
@ -453,7 +464,6 @@ bool DarwinAsmPrinter::doInitialization(Module &M) {
bool DarwinAsmPrinter::doFinalization(Module &M) {
const TargetData &TD = TM.getTargetData();
std::string CurSection;
// Print out module-level global variables here.
for (Module::const_global_iterator I = M.global_begin(), E = M.global_end(); I != E; ++I)
@ -467,7 +477,7 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
if (C->isNullValue() && /* FIXME: Verify correct */
(I->hasInternalLinkage() || I->hasWeakLinkage() ||
I->hasLinkOnceLinkage())) {
SwitchSection(O, CurSection, ".data");
SwitchSection(".data", I);
if (Size == 0) Size = 1; // .comm Foo, 0 is undefined, avoid it.
if (I->hasInternalLinkage())
O << ".lcomm " << name << "," << Size << "," << Align;
@ -495,10 +505,10 @@ bool DarwinAsmPrinter::doFinalization(Module &M) {
O << "\t.globl " << name << "\n";
// FALL THROUGH
case GlobalValue::InternalLinkage:
SwitchSection(O, CurSection, ".data");
SwitchSection(".data", I);
break;
case GlobalValue::GhostLinkage:
std::cerr << "Error: unmaterialized (GhostLinkage) function in asm!";
default:
std::cerr << "Unknown linkage type!";
abort();
}
@ -649,8 +659,8 @@ void AIXAsmPrinter::printConstantPool(MachineConstantPool *MCP) {
}
bool AIXAsmPrinter::doInitialization(Module &M) {
SwitchSection("", 0);
const TargetData &TD = TM.getTargetData();
std::string CurSection;
O << "\t.machine \"ppc64\"\n"
<< "\t.toc\n"