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MCAssembler: Sink fixup list into MCDataFragment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96093 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar 2010-02-13 09:28:43 +00:00
parent a4766d7af9
commit 0bcf074867
2 changed files with 41 additions and 54 deletions
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62
include/llvm/MC/MCAssembler.h
View File

@ -54,10 +54,6 @@ class MCFragment : public ilist_node<MCFragment> {
MCFragment(const MCFragment&); // DO NOT IMPLEMENT
void operator=(const MCFragment&); // DO NOT IMPLEMENT
public:
typedef std::vector<MCAsmFixup>::const_iterator const_fixup_iterator;
typedef std::vector<MCAsmFixup>::iterator fixup_iterator;
public:
enum FragmentType {
FT_Data,
@ -85,11 +81,6 @@ private:
/// FileSize - The file size of this section. This is ~0 until initialized.
uint64_t FileSize;
/// Fixups - The list of fixups in this fragment.
//
// FIXME: This should be sunk into MCDataFragment.
std::vector<MCAsmFixup> Fixups;
/// @}
protected:
@ -111,36 +102,6 @@ public:
return 0;
}
/// @name Fixup Access
/// @{
/// LookupFixup - Look up the fixup for the given \arg Fragment and \arg
/// Offset.
///
/// If multiple fixups exist for the same fragment and offset it is undefined
/// which one is returned.
//
// FIXME: This isn't horribly slow in practice, but there are much nicer
// solutions to applying the fixups. This will be fixed by sinking fixups into
// data fragments exclusively.
const MCAsmFixup *LookupFixup(uint64_t Offset) const {
for (unsigned i = 0, e = Fixups.size(); i != e; ++i)
if (Fixups[i].Offset == Offset)
return &Fixups[i];
return 0;
}
std::vector<MCAsmFixup> &getFixups() { return Fixups; }
const std::vector<MCAsmFixup> &getFixups() const { return Fixups; }
fixup_iterator fixup_begin() { return Fixups.begin(); }
const_fixup_iterator fixup_begin() const { return Fixups.begin(); }
fixup_iterator fixup_end() {return Fixups.end();}
const_fixup_iterator fixup_end() const {return Fixups.end();}
size_t fixup_size() const { return Fixups.size(); }
/// @name Assembler Backend Support
/// @{
//
@ -173,6 +134,13 @@ public:
class MCDataFragment : public MCFragment {
SmallString<32> Contents;
/// Fixups - The list of fixups in this fragment.
std::vector<MCAsmFixup> Fixups;
public:
typedef std::vector<MCAsmFixup>::const_iterator const_fixup_iterator;
typedef std::vector<MCAsmFixup>::iterator fixup_iterator;
public:
MCDataFragment(MCSectionData *SD = 0) : MCFragment(FT_Data, SD) {}
@ -188,6 +156,22 @@ public:
/// @}
/// @name Fixup Access
/// @{
std::vector<MCAsmFixup> &getFixups() { return Fixups; }
const std::vector<MCAsmFixup> &getFixups() const { return Fixups; }
fixup_iterator fixup_begin() { return Fixups.begin(); }
const_fixup_iterator fixup_begin() const { return Fixups.begin(); }
fixup_iterator fixup_end() {return Fixups.end();}
const_fixup_iterator fixup_end() const {return Fixups.end();}
size_t fixup_size() const { return Fixups.size(); }
/// @}
static bool classof(const MCFragment *F) {
return F->getKind() == MCFragment::FT_Data;
}

33
lib/MC/MCAssembler.cpp
View File

@ -455,7 +455,7 @@ public:
}
}
void ComputeRelocationInfo(MCAssembler &Asm, MCFragment &Fragment,
void ComputeRelocationInfo(MCAssembler &Asm, MCDataFragment &Fragment,
MCAsmFixup &Fixup,
DenseMap<const MCSymbol*,MCSymbolData*> &SymbolMap,
std::vector<MachRelocationEntry> &Relocs) {
@ -780,9 +780,10 @@ public:
unsigned NumRelocsStart = RelocInfos.size();
for (MCSectionData::reverse_iterator it2 = SD.rbegin(),
ie2 = SD.rend(); it2 != ie2; ++it2)
for (unsigned i = 0, e = it2->fixup_size(); i != e; ++i)
ComputeRelocationInfo(Asm, *it2, it2->getFixups()[e - i - 1],
SymbolMap, RelocInfos);
if (MCDataFragment *DF = dyn_cast<MCDataFragment>(&*it2))
for (unsigned i = 0, e = DF->fixup_size(); i != e; ++i)
ComputeRelocationInfo(Asm, *DF, DF->getFixups()[e - i - 1],
SymbolMap, RelocInfos);
unsigned NumRelocs = RelocInfos.size() - NumRelocsStart;
uint64_t SectionStart = SectionDataStart + SD.getAddress();
@ -1198,16 +1199,6 @@ void MCFragment::dump() {
OS << "<MCFragment " << (void*) this << " Offset:" << Offset
<< " FileSize:" << FileSize;
if (!Fixups.empty()) {
OS << "\n";
OS << " Fixups:[";
for (fixup_iterator it = fixup_begin(), ie = fixup_end(); it != ie; ++it) {
if (it != fixup_begin()) OS << ",\n ";
OS << *it;
}
OS << "]";
}
OS << ">";
}
@ -1233,7 +1224,19 @@ void MCDataFragment::dump() {
if (i) OS << ",";
OS << hexdigit((Contents[i] >> 4) & 0xF) << hexdigit(Contents[i] & 0xF);
}
OS << "]>";
OS << "]";
if (!getFixups().empty()) {
OS << ",\n ";
OS << " Fixups:[";
for (fixup_iterator it = fixup_begin(), ie = fixup_end(); it != ie; ++it) {
if (it != fixup_begin()) OS << ",\n ";
OS << *it;
}
OS << "]";
}
OS << ">";
}
void MCFillFragment::dump() {