#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/STLExtras.h"
#include <cstdlib>
using namespace clang;
TargetInfo::TargetInfo(const std::string &T) : Triple(T) {
CharIsSigned = true;
TLSSupported = true;
PointerWidth = PointerAlign = 32;
WCharWidth = WCharAlign = 32;
IntWidth = IntAlign = 32;
LongWidth = LongAlign = 32;
LongLongWidth = LongLongAlign = 64;
FloatWidth = 32;
FloatAlign = 32;
DoubleWidth = 64;
DoubleAlign = 64;
LongDoubleWidth = 64;
LongDoubleAlign = 64;
IntMaxTWidth = 64;
SizeType = UnsignedLong;
PtrDiffType = SignedLong;
IntMaxType = SignedLongLong;
UIntMaxType = UnsignedLongLong;
IntPtrType = SignedLong;
WCharType = SignedInt;
FloatFormat = &llvm::APFloat::IEEEsingle;
DoubleFormat = &llvm::APFloat::IEEEdouble;
LongDoubleFormat = &llvm::APFloat::IEEEdouble;
DescriptionString = "E-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
"i64:64:64-f32:32:32-f64:64:64";
UserLabelPrefix = "_";
}
TargetInfo::~TargetInfo() {}
const char *TargetInfo::getTypeName(IntType T) {
switch (T) {
default: assert(0 && "not an integer!");
case SignedShort: return "short";
case UnsignedShort: return "unsigned short";
case SignedInt: return "int";
case UnsignedInt: return "unsigned int";
case SignedLong: return "long int";
case UnsignedLong: return "long unsigned int";
case SignedLongLong: return "long long int";
case UnsignedLongLong: return "long long unsigned int";
}
}
static void removeGCCRegisterPrefix(const char *&Name) {
if (Name[0] == '%' || Name[0] == '#')
Name++;
}
bool TargetInfo::isValidGCCRegisterName(const char *Name) const {
const char * const *Names;
unsigned NumNames;
removeGCCRegisterPrefix(Name);
if (strcmp(Name, "memory") == 0 ||
strcmp(Name, "cc") == 0)
return true;
getGCCRegNames(Names, NumNames);
if (isdigit(Name[0])) {
char *End;
int n = (int)strtol(Name, &End, 0);
if (*End == 0)
return n >= 0 && (unsigned)n < NumNames;
}
for (unsigned i = 0; i < NumNames; i++) {
if (strcmp(Name, Names[i]) == 0)
return true;
}
const GCCRegAlias *Aliases;
unsigned NumAliases;
getGCCRegAliases(Aliases, NumAliases);
for (unsigned i = 0; i < NumAliases; i++) {
for (unsigned j = 0 ; j < llvm::array_lengthof(Aliases[i].Aliases); j++) {
if (!Aliases[i].Aliases[j])
break;
if (strcmp(Aliases[i].Aliases[j], Name) == 0)
return true;
}
}
return false;
}
const char *TargetInfo::getNormalizedGCCRegisterName(const char *Name) const {
assert(isValidGCCRegisterName(Name) && "Invalid register passed in");
removeGCCRegisterPrefix(Name);
const char * const *Names;
unsigned NumNames;
getGCCRegNames(Names, NumNames);
if (isdigit(Name[0])) {
char *End;
int n = (int)strtol(Name, &End, 0);
if (*End == 0) {
assert(n >= 0 && (unsigned)n < NumNames &&
"Out of bounds register number!");
return Names[n];
}
}
const GCCRegAlias *Aliases;
unsigned NumAliases;
getGCCRegAliases(Aliases, NumAliases);
for (unsigned i = 0; i < NumAliases; i++) {
for (unsigned j = 0 ; j < llvm::array_lengthof(Aliases[i].Aliases); j++) {
if (!Aliases[i].Aliases[j])
break;
if (strcmp(Aliases[i].Aliases[j], Name) == 0)
return Aliases[i].Register;
}
}
return Name;
}
bool TargetInfo::validateOutputConstraint(ConstraintInfo &Info) const {
const char *Name = Info.getConstraintStr().c_str();
if (*Name != '=' && *Name != '+')
return false;
if (*Name == '+')
Info.setIsReadWrite();
Name++;
while (*Name) {
switch (*Name) {
default:
if (!validateAsmConstraint(Name, Info)) {
return false;
}
case '&': break;
case 'r': Info.setAllowsRegister();
break;
case 'm': Info.setAllowsMemory();
break;
case 'g': case 'X': Info.setAllowsRegister();
Info.setAllowsMemory();
break;
}
Name++;
}
return true;
}
bool TargetInfo::resolveSymbolicName(const char *&Name,
ConstraintInfo *OutputConstraints,
unsigned NumOutputs,
unsigned &Index) const {
assert(*Name == '[' && "Symbolic name did not start with '['");
Name++;
const char *Start = Name;
while (*Name && *Name != ']')
Name++;
if (!*Name) {
return false;
}
std::string SymbolicName(Start, Name - Start);
for (Index = 0; Index != NumOutputs; ++Index)
if (SymbolicName == OutputConstraints[Index].getName())
return true;
return false;
}
bool TargetInfo::validateInputConstraint(ConstraintInfo *OutputConstraints,
unsigned NumOutputs,
ConstraintInfo &Info) const {
const char *Name = Info.ConstraintStr.c_str();
while (*Name) {
switch (*Name) {
default:
if (*Name >= '0' && *Name <= '9') {
unsigned i = *Name - '0';
if (i >= NumOutputs)
return false;
Info.setTiedOperand(i, OutputConstraints[i]);
} else if (!validateAsmConstraint(Name, Info)) {
return false;
}
break;
case '[': {
unsigned Index = 0;
if (!resolveSymbolicName(Name, OutputConstraints, NumOutputs, Index))
return false;
break;
}
case '%': break;
case 'i': case 'n': break;
case 'I': case 'J':
case 'K':
case 'L':
case 'M':
case 'N':
case 'O':
case 'P':
break;
case 'r': Info.setAllowsRegister();
break;
case 'm': Info.setAllowsMemory();
break;
case 'g': case 'X': Info.setAllowsRegister();
Info.setAllowsMemory();
break;
}
Name++;
}
return true;
}