mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
d8e616b173
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40613 91177308-0d34-0410-b5e6-96231b3b80d8
452 lines
16 KiB
C++
452 lines
16 KiB
C++
/*===-- Lexer.l - Scanner for llvm assembly files --------------*- C++ -*--===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the LLVM research group and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the flex scanner for LLVM assembly languages files.
|
|
//
|
|
//===----------------------------------------------------------------------===*/
|
|
|
|
%option prefix="llvmAsm"
|
|
%option yylineno
|
|
%option nostdinit
|
|
%option never-interactive
|
|
%option batch
|
|
%option noyywrap
|
|
%option nodefault
|
|
%option 8bit
|
|
%option outfile="Lexer.cpp"
|
|
%option ecs
|
|
%option noreject
|
|
%option noyymore
|
|
|
|
%{
|
|
#include "ParserInternals.h"
|
|
#include "llvm/Module.h"
|
|
#include "llvm/Support/MathExtras.h"
|
|
#include <list>
|
|
#include "llvmAsmParser.h"
|
|
#include <cctype>
|
|
#include <cstdlib>
|
|
|
|
void set_scan_file(FILE * F){
|
|
yy_switch_to_buffer(yy_create_buffer( F, YY_BUF_SIZE ) );
|
|
}
|
|
void set_scan_string (const char * str) {
|
|
yy_scan_string (str);
|
|
}
|
|
|
|
// Construct a token value for a non-obsolete token
|
|
#define RET_TOK(type, Enum, sym) \
|
|
llvmAsmlval.type = Instruction::Enum; \
|
|
return sym
|
|
|
|
// Construct a token value for an obsolete token
|
|
#define RET_TY(CTYPE, SYM) \
|
|
llvmAsmlval.PrimType = CTYPE;\
|
|
return SYM
|
|
|
|
namespace llvm {
|
|
|
|
// TODO: All of the static identifiers are figured out by the lexer,
|
|
// these should be hashed to reduce the lexer size
|
|
|
|
|
|
// atoull - Convert an ascii string of decimal digits into the unsigned long
|
|
// long representation... this does not have to do input error checking,
|
|
// because we know that the input will be matched by a suitable regex...
|
|
//
|
|
static uint64_t atoull(const char *Buffer) {
|
|
uint64_t Result = 0;
|
|
for (; *Buffer; Buffer++) {
|
|
uint64_t OldRes = Result;
|
|
Result *= 10;
|
|
Result += *Buffer-'0';
|
|
if (Result < OldRes) // Uh, oh, overflow detected!!!
|
|
GenerateError("constant bigger than 64 bits detected!");
|
|
}
|
|
return Result;
|
|
}
|
|
|
|
static uint64_t HexIntToVal(const char *Buffer) {
|
|
uint64_t Result = 0;
|
|
for (; *Buffer; ++Buffer) {
|
|
uint64_t OldRes = Result;
|
|
Result *= 16;
|
|
char C = *Buffer;
|
|
if (C >= '0' && C <= '9')
|
|
Result += C-'0';
|
|
else if (C >= 'A' && C <= 'F')
|
|
Result += C-'A'+10;
|
|
else if (C >= 'a' && C <= 'f')
|
|
Result += C-'a'+10;
|
|
|
|
if (Result < OldRes) // Uh, oh, overflow detected!!!
|
|
GenerateError("constant bigger than 64 bits detected!");
|
|
}
|
|
return Result;
|
|
}
|
|
|
|
|
|
// HexToFP - Convert the ascii string in hexidecimal format to the floating
|
|
// point representation of it.
|
|
//
|
|
static double HexToFP(const char *Buffer) {
|
|
return BitsToDouble(HexIntToVal(Buffer)); // Cast Hex constant to double
|
|
}
|
|
|
|
|
|
// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
|
|
// appropriate character.
|
|
char *UnEscapeLexed(char *Buffer, char* EndBuffer) {
|
|
char *BOut = Buffer;
|
|
for (char *BIn = Buffer; *BIn; ) {
|
|
if (BIn[0] == '\\') {
|
|
if (BIn < EndBuffer-1 && BIn[1] == '\\') {
|
|
*BOut++ = '\\'; // Two \ becomes one
|
|
BIn += 2;
|
|
} else if (BIn < EndBuffer-2 && isxdigit(BIn[1]) && isxdigit(BIn[2])) {
|
|
char Tmp = BIn[3]; BIn[3] = 0; // Terminate string
|
|
*BOut = (char)strtol(BIn+1, 0, 16); // Convert to number
|
|
BIn[3] = Tmp; // Restore character
|
|
BIn += 3; // Skip over handled chars
|
|
++BOut;
|
|
} else {
|
|
*BOut++ = *BIn++;
|
|
}
|
|
} else {
|
|
*BOut++ = *BIn++;
|
|
}
|
|
}
|
|
return BOut;
|
|
}
|
|
|
|
} // End llvm namespace
|
|
|
|
using namespace llvm;
|
|
|
|
#define YY_NEVER_INTERACTIVE 1
|
|
%}
|
|
|
|
|
|
|
|
/* Comments start with a ; and go till end of line */
|
|
Comment ;.*
|
|
|
|
/* Local Values and Type identifiers start with a % sign */
|
|
LocalVarName %[-a-zA-Z$._][-a-zA-Z$._0-9]*
|
|
|
|
/* Global Value identifiers start with an @ sign */
|
|
GlobalVarName @[-a-zA-Z$._][-a-zA-Z$._0-9]*
|
|
|
|
/* Label identifiers end with a colon */
|
|
Label [-a-zA-Z$._0-9]+:
|
|
QuoteLabel \"[^\"]+\":
|
|
|
|
/* Quoted names can contain any character except " and \ */
|
|
StringConstant \"[^\"]*\"
|
|
AtStringConstant @\"[^\"]*\"
|
|
PctStringConstant %\"[^\"]*\"
|
|
|
|
/* LocalVarID/GlobalVarID: match an unnamed local variable slot ID. */
|
|
LocalVarID %[0-9]+
|
|
GlobalVarID @[0-9]+
|
|
|
|
/* Integer types are specified with i and a bitwidth */
|
|
IntegerType i[0-9]+
|
|
|
|
/* E[PN]Integer: match positive and negative literal integer values. */
|
|
PInteger [0-9]+
|
|
NInteger -[0-9]+
|
|
|
|
/* FPConstant - A Floating point constant.
|
|
*/
|
|
FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
|
|
|
|
/* HexFPConstant - Floating point constant represented in IEEE format as a
|
|
* hexadecimal number for when exponential notation is not precise enough.
|
|
*/
|
|
HexFPConstant 0x[0-9A-Fa-f]+
|
|
|
|
/* HexIntConstant - Hexadecimal constant generated by the CFE to avoid forcing
|
|
* it to deal with 64 bit numbers.
|
|
*/
|
|
HexIntConstant [us]0x[0-9A-Fa-f]+
|
|
|
|
/* WSNL - shorthand for whitespace followed by newline */
|
|
WSNL [ \r\t]*$
|
|
%%
|
|
|
|
{Comment} { /* Ignore comments for now */ }
|
|
|
|
begin { return BEGINTOK; }
|
|
end { return ENDTOK; }
|
|
true { return TRUETOK; }
|
|
false { return FALSETOK; }
|
|
declare { return DECLARE; }
|
|
define { return DEFINE; }
|
|
global { return GLOBAL; }
|
|
constant { return CONSTANT; }
|
|
internal { return INTERNAL; }
|
|
linkonce { return LINKONCE; }
|
|
weak { return WEAK; }
|
|
appending { return APPENDING; }
|
|
dllimport { return DLLIMPORT; }
|
|
dllexport { return DLLEXPORT; }
|
|
hidden { return HIDDEN; }
|
|
protected { return PROTECTED; }
|
|
extern_weak { return EXTERN_WEAK; }
|
|
external { return EXTERNAL; }
|
|
thread_local { return THREAD_LOCAL; }
|
|
zeroinitializer { return ZEROINITIALIZER; }
|
|
\.\.\. { return DOTDOTDOT; }
|
|
undef { return UNDEF; }
|
|
null { return NULL_TOK; }
|
|
to { return TO; }
|
|
tail { return TAIL; }
|
|
target { return TARGET; }
|
|
triple { return TRIPLE; }
|
|
deplibs { return DEPLIBS; }
|
|
datalayout { return DATALAYOUT; }
|
|
volatile { return VOLATILE; }
|
|
align { return ALIGN; }
|
|
section { return SECTION; }
|
|
alias { return ALIAS; }
|
|
module { return MODULE; }
|
|
asm { return ASM_TOK; }
|
|
sideeffect { return SIDEEFFECT; }
|
|
|
|
cc { return CC_TOK; }
|
|
ccc { return CCC_TOK; }
|
|
fastcc { return FASTCC_TOK; }
|
|
coldcc { return COLDCC_TOK; }
|
|
x86_stdcallcc { return X86_STDCALLCC_TOK; }
|
|
x86_fastcallcc { return X86_FASTCALLCC_TOK; }
|
|
|
|
signext { return SIGNEXT; }
|
|
zeroext { return ZEROEXT; }
|
|
inreg { return INREG; }
|
|
sret { return SRET; }
|
|
nounwind { return NOUNWIND; }
|
|
noreturn { return NORETURN; }
|
|
noalias { return NOALIAS; }
|
|
byval { return BYVAL; }
|
|
nest { return NEST; }
|
|
sext{WSNL} { // For auto-upgrade only, drop in LLVM 3.0
|
|
return SIGNEXT; }
|
|
zext{WSNL} { // For auto-upgrade only, drop in LLVM 3.0
|
|
return ZEROEXT; }
|
|
|
|
void { RET_TY(Type::VoidTy, VOID); }
|
|
float { RET_TY(Type::FloatTy, FLOAT); }
|
|
double { RET_TY(Type::DoubleTy,DOUBLE);}
|
|
label { RET_TY(Type::LabelTy, LABEL); }
|
|
type { return TYPE; }
|
|
opaque { return OPAQUE; }
|
|
{IntegerType} { uint64_t NumBits = atoull(yytext+1);
|
|
if (NumBits < IntegerType::MIN_INT_BITS ||
|
|
NumBits > IntegerType::MAX_INT_BITS)
|
|
GenerateError("Bitwidth for integer type out of range!");
|
|
const Type* Ty = IntegerType::get(NumBits);
|
|
RET_TY(Ty, INTTYPE);
|
|
}
|
|
|
|
add { RET_TOK(BinaryOpVal, Add, ADD); }
|
|
sub { RET_TOK(BinaryOpVal, Sub, SUB); }
|
|
mul { RET_TOK(BinaryOpVal, Mul, MUL); }
|
|
udiv { RET_TOK(BinaryOpVal, UDiv, UDIV); }
|
|
sdiv { RET_TOK(BinaryOpVal, SDiv, SDIV); }
|
|
fdiv { RET_TOK(BinaryOpVal, FDiv, FDIV); }
|
|
urem { RET_TOK(BinaryOpVal, URem, UREM); }
|
|
srem { RET_TOK(BinaryOpVal, SRem, SREM); }
|
|
frem { RET_TOK(BinaryOpVal, FRem, FREM); }
|
|
shl { RET_TOK(BinaryOpVal, Shl, SHL); }
|
|
lshr { RET_TOK(BinaryOpVal, LShr, LSHR); }
|
|
ashr { RET_TOK(BinaryOpVal, AShr, ASHR); }
|
|
and { RET_TOK(BinaryOpVal, And, AND); }
|
|
or { RET_TOK(BinaryOpVal, Or , OR ); }
|
|
xor { RET_TOK(BinaryOpVal, Xor, XOR); }
|
|
icmp { RET_TOK(OtherOpVal, ICmp, ICMP); }
|
|
fcmp { RET_TOK(OtherOpVal, FCmp, FCMP); }
|
|
|
|
eq { return EQ; }
|
|
ne { return NE; }
|
|
slt { return SLT; }
|
|
sgt { return SGT; }
|
|
sle { return SLE; }
|
|
sge { return SGE; }
|
|
ult { return ULT; }
|
|
ugt { return UGT; }
|
|
ule { return ULE; }
|
|
uge { return UGE; }
|
|
oeq { return OEQ; }
|
|
one { return ONE; }
|
|
olt { return OLT; }
|
|
ogt { return OGT; }
|
|
ole { return OLE; }
|
|
oge { return OGE; }
|
|
ord { return ORD; }
|
|
uno { return UNO; }
|
|
ueq { return UEQ; }
|
|
une { return UNE; }
|
|
|
|
phi { RET_TOK(OtherOpVal, PHI, PHI_TOK); }
|
|
call { RET_TOK(OtherOpVal, Call, CALL); }
|
|
trunc { RET_TOK(CastOpVal, Trunc, TRUNC); }
|
|
zext { RET_TOK(CastOpVal, ZExt, ZEXT); }
|
|
sext { RET_TOK(CastOpVal, SExt, SEXT); }
|
|
fptrunc { RET_TOK(CastOpVal, FPTrunc, FPTRUNC); }
|
|
fpext { RET_TOK(CastOpVal, FPExt, FPEXT); }
|
|
uitofp { RET_TOK(CastOpVal, UIToFP, UITOFP); }
|
|
sitofp { RET_TOK(CastOpVal, SIToFP, SITOFP); }
|
|
fptoui { RET_TOK(CastOpVal, FPToUI, FPTOUI); }
|
|
fptosi { RET_TOK(CastOpVal, FPToSI, FPTOSI); }
|
|
inttoptr { RET_TOK(CastOpVal, IntToPtr, INTTOPTR); }
|
|
ptrtoint { RET_TOK(CastOpVal, PtrToInt, PTRTOINT); }
|
|
bitcast { RET_TOK(CastOpVal, BitCast, BITCAST); }
|
|
select { RET_TOK(OtherOpVal, Select, SELECT); }
|
|
va_arg { RET_TOK(OtherOpVal, VAArg , VAARG); }
|
|
ret { RET_TOK(TermOpVal, Ret, RET); }
|
|
br { RET_TOK(TermOpVal, Br, BR); }
|
|
switch { RET_TOK(TermOpVal, Switch, SWITCH); }
|
|
invoke { RET_TOK(TermOpVal, Invoke, INVOKE); }
|
|
unwind { RET_TOK(TermOpVal, Unwind, UNWIND); }
|
|
unreachable { RET_TOK(TermOpVal, Unreachable, UNREACHABLE); }
|
|
|
|
malloc { RET_TOK(MemOpVal, Malloc, MALLOC); }
|
|
alloca { RET_TOK(MemOpVal, Alloca, ALLOCA); }
|
|
free { RET_TOK(MemOpVal, Free, FREE); }
|
|
load { RET_TOK(MemOpVal, Load, LOAD); }
|
|
store { RET_TOK(MemOpVal, Store, STORE); }
|
|
getelementptr { RET_TOK(MemOpVal, GetElementPtr, GETELEMENTPTR); }
|
|
|
|
extractelement { RET_TOK(OtherOpVal, ExtractElement, EXTRACTELEMENT); }
|
|
insertelement { RET_TOK(OtherOpVal, InsertElement, INSERTELEMENT); }
|
|
shufflevector { RET_TOK(OtherOpVal, ShuffleVector, SHUFFLEVECTOR); }
|
|
|
|
|
|
{LocalVarName} {
|
|
llvmAsmlval.StrVal = new std::string(yytext+1); // Skip %
|
|
return LOCALVAR;
|
|
}
|
|
{GlobalVarName} {
|
|
llvmAsmlval.StrVal = new std::string(yytext+1); // Skip @
|
|
return GLOBALVAR;
|
|
}
|
|
{Label} {
|
|
yytext[yyleng-1] = 0; // nuke colon
|
|
llvmAsmlval.StrVal = new std::string(yytext);
|
|
return LABELSTR;
|
|
}
|
|
{QuoteLabel} {
|
|
yytext[yyleng-2] = 0; // nuke colon, end quote
|
|
const char* EndChar = UnEscapeLexed(yytext+1, yytext+yyleng);
|
|
llvmAsmlval.StrVal =
|
|
new std::string(yytext+1, EndChar - yytext - 1);
|
|
return LABELSTR;
|
|
}
|
|
|
|
{StringConstant} { yytext[yyleng-1] = 0; // nuke end quote
|
|
const char* EndChar = UnEscapeLexed(yytext+1, yytext+yyleng);
|
|
llvmAsmlval.StrVal =
|
|
new std::string(yytext+1, EndChar - yytext - 1);
|
|
return STRINGCONSTANT;
|
|
}
|
|
{AtStringConstant} {
|
|
yytext[yyleng-1] = 0; // nuke end quote
|
|
const char* EndChar =
|
|
UnEscapeLexed(yytext+2, yytext+yyleng);
|
|
llvmAsmlval.StrVal =
|
|
new std::string(yytext+2, EndChar - yytext - 2);
|
|
return ATSTRINGCONSTANT;
|
|
}
|
|
{PctStringConstant} {
|
|
yytext[yyleng-1] = 0; // nuke end quote
|
|
const char* EndChar =
|
|
UnEscapeLexed(yytext+2, yytext+yyleng);
|
|
llvmAsmlval.StrVal =
|
|
new std::string(yytext+2, EndChar - yytext - 2);
|
|
return PCTSTRINGCONSTANT;
|
|
}
|
|
{PInteger} {
|
|
uint32_t numBits = ((yyleng * 64) / 19) + 1;
|
|
APInt Tmp(numBits, yytext, yyleng, 10);
|
|
uint32_t activeBits = Tmp.getActiveBits();
|
|
if (activeBits > 0 && activeBits < numBits)
|
|
Tmp.trunc(activeBits);
|
|
if (Tmp.getBitWidth() > 64) {
|
|
llvmAsmlval.APIntVal = new APInt(Tmp);
|
|
return EUAPINTVAL;
|
|
} else {
|
|
llvmAsmlval.UInt64Val = Tmp.getZExtValue();
|
|
return EUINT64VAL;
|
|
}
|
|
}
|
|
{NInteger} {
|
|
uint32_t numBits = (((yyleng-1) * 64) / 19) + 2;
|
|
APInt Tmp(numBits, yytext, yyleng, 10);
|
|
uint32_t minBits = Tmp.getMinSignedBits();
|
|
if (minBits > 0 && minBits < numBits)
|
|
Tmp.trunc(minBits);
|
|
if (Tmp.getBitWidth() > 64) {
|
|
llvmAsmlval.APIntVal = new APInt(Tmp);
|
|
return ESAPINTVAL;
|
|
} else {
|
|
llvmAsmlval.SInt64Val = Tmp.getSExtValue();
|
|
return ESINT64VAL;
|
|
}
|
|
}
|
|
|
|
{HexIntConstant} { int len = yyleng - 3;
|
|
uint32_t bits = len * 4;
|
|
APInt Tmp(bits, yytext+3, len, 16);
|
|
uint32_t activeBits = Tmp.getActiveBits();
|
|
if (activeBits > 0 && activeBits < bits)
|
|
Tmp.trunc(activeBits);
|
|
if (Tmp.getBitWidth() > 64) {
|
|
llvmAsmlval.APIntVal = new APInt(Tmp);
|
|
return yytext[0] == 's' ? ESAPINTVAL : EUAPINTVAL;
|
|
} else if (yytext[0] == 's') {
|
|
llvmAsmlval.SInt64Val = Tmp.getSExtValue();
|
|
return ESINT64VAL;
|
|
} else {
|
|
llvmAsmlval.UInt64Val = Tmp.getZExtValue();
|
|
return EUINT64VAL;
|
|
}
|
|
}
|
|
|
|
{LocalVarID} {
|
|
uint64_t Val = atoull(yytext+1);
|
|
if ((unsigned)Val != Val)
|
|
GenerateError("Invalid value number (too large)!");
|
|
llvmAsmlval.UIntVal = unsigned(Val);
|
|
return LOCALVAL_ID;
|
|
}
|
|
{GlobalVarID} {
|
|
uint64_t Val = atoull(yytext+1);
|
|
if ((unsigned)Val != Val)
|
|
GenerateError("Invalid value number (too large)!");
|
|
llvmAsmlval.UIntVal = unsigned(Val);
|
|
return GLOBALVAL_ID;
|
|
}
|
|
|
|
{FPConstant} { llvmAsmlval.FPVal = atof(yytext); return FPVAL; }
|
|
{HexFPConstant} { llvmAsmlval.FPVal = HexToFP(yytext); return FPVAL; }
|
|
|
|
<<EOF>> {
|
|
/* Make sure to free the internal buffers for flex when we are
|
|
* done reading our input!
|
|
*/
|
|
yy_delete_buffer(YY_CURRENT_BUFFER);
|
|
return EOF;
|
|
}
|
|
|
|
[ \r\t\n] { /* Ignore whitespace */ }
|
|
. { return yytext[0]; }
|
|
|
|
%%
|