mirror of
https://github.com/c64scene-ar/llvm-6502.git
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fe63fb986d
regions of memory that have a target specific relationship, as described in the Embedded C Technical Report. This also implements the 2007-12-11-AddressSpaces test, which demonstrates how address space attributes can be used in LLVM IR. In addition, this patch changes the bitcode signature for stores (in a backwards compatible manner), such that the pointer type, rather than the pointee type, is encoded. This permits type information in the pointer (e.g. address space) to be preserved for stores. LangRef updates are forthcoming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44858 91177308-0d34-0410-b5e6-96231b3b80d8
838 lines
25 KiB
C++
838 lines
25 KiB
C++
//===- LLLexer.cpp - Lexer for .ll Files ----------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file was developed by Chris Lattner and is distributed under
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// the University of Illinois Open Source License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Implement the Lexer for .ll files.
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//
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//===----------------------------------------------------------------------===//
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#include "LLLexer.h"
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#include "ParserInternals.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/MathExtras.h"
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#include <list>
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#include "llvmAsmParser.h"
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using namespace llvm;
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//===----------------------------------------------------------------------===//
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// Helper functions.
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//===----------------------------------------------------------------------===//
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// atoull - Convert an ascii string of decimal digits into the unsigned long
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// long representation... this does not have to do input error checking,
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// because we know that the input will be matched by a suitable regex...
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//
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static uint64_t atoull(const char *Buffer, const char *End) {
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uint64_t Result = 0;
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for (; Buffer != End; Buffer++) {
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uint64_t OldRes = Result;
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Result *= 10;
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Result += *Buffer-'0';
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if (Result < OldRes) { // Uh, oh, overflow detected!!!
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GenerateError("constant bigger than 64 bits detected!");
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return 0;
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}
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}
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return Result;
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}
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static uint64_t HexIntToVal(const char *Buffer, const char *End) {
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uint64_t Result = 0;
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for (; Buffer != End; ++Buffer) {
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uint64_t OldRes = Result;
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Result *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Result += C-'0';
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else if (C >= 'A' && C <= 'F')
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Result += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Result += C-'a'+10;
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if (Result < OldRes) { // Uh, oh, overflow detected!!!
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GenerateError("constant bigger than 64 bits detected!");
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return 0;
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}
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}
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return Result;
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}
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// HexToFP - Convert the ascii string in hexadecimal format to the floating
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// point representation of it.
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//
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static double HexToFP(const char *Buffer, const char *End) {
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return BitsToDouble(HexIntToVal(Buffer, End)); // Cast Hex constant to double
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}
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static void HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]){
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Pair[0] = 0;
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for (int i=0; i<16; i++, Buffer++) {
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assert(Buffer != End);
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Pair[0] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[0] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[0] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[0] += C-'a'+10;
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}
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Pair[1] = 0;
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for (int i=0; i<16 && Buffer != End; i++, Buffer++) {
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Pair[1] *= 16;
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char C = *Buffer;
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if (C >= '0' && C <= '9')
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Pair[1] += C-'0';
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else if (C >= 'A' && C <= 'F')
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Pair[1] += C-'A'+10;
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else if (C >= 'a' && C <= 'f')
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Pair[1] += C-'a'+10;
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}
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if (Buffer != End)
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GenerateError("constant bigger than 128 bits detected!");
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}
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// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
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// appropriate character.
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static void UnEscapeLexed(std::string &Str) {
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if (Str.empty()) return;
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char *Buffer = &Str[0], *EndBuffer = Buffer+Str.size();
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char *BOut = Buffer;
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for (char *BIn = Buffer; BIn != EndBuffer; ) {
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if (BIn[0] == '\\') {
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if (BIn < EndBuffer-1 && BIn[1] == '\\') {
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*BOut++ = '\\'; // Two \ becomes one
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BIn += 2;
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} else if (BIn < EndBuffer-2 && isxdigit(BIn[1]) && isxdigit(BIn[2])) {
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char Tmp = BIn[3]; BIn[3] = 0; // Terminate string
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*BOut = (char)strtol(BIn+1, 0, 16); // Convert to number
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BIn[3] = Tmp; // Restore character
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BIn += 3; // Skip over handled chars
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++BOut;
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} else {
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*BOut++ = *BIn++;
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}
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} else {
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*BOut++ = *BIn++;
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}
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}
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Str.resize(BOut-Buffer);
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}
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/// isLabelChar - Return true for [-a-zA-Z$._0-9].
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static bool isLabelChar(char C) {
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return isalnum(C) || C == '-' || C == '$' || C == '.' || C == '_';
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}
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/// isLabelTail - Return true if this pointer points to a valid end of a label.
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static const char *isLabelTail(const char *CurPtr) {
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while (1) {
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if (CurPtr[0] == ':') return CurPtr+1;
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if (!isLabelChar(CurPtr[0])) return 0;
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++CurPtr;
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}
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}
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//===----------------------------------------------------------------------===//
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// Lexer definition.
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//===----------------------------------------------------------------------===//
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// FIXME: REMOVE THIS.
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#define YYEOF 0
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#define YYERROR -2
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LLLexer::LLLexer(MemoryBuffer *StartBuf) : CurLineNo(1), CurBuf(StartBuf) {
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CurPtr = CurBuf->getBufferStart();
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}
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std::string LLLexer::getFilename() const {
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return CurBuf->getBufferIdentifier();
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}
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int LLLexer::getNextChar() {
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char CurChar = *CurPtr++;
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switch (CurChar) {
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default: return (unsigned char)CurChar;
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case 0:
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// A nul character in the stream is either the end of the current buffer or
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// a random nul in the file. Disambiguate that here.
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if (CurPtr-1 != CurBuf->getBufferEnd())
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return 0; // Just whitespace.
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// Otherwise, return end of file.
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--CurPtr; // Another call to lex will return EOF again.
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return EOF;
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case '\n':
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case '\r':
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// Handle the newline character by ignoring it and incrementing the line
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// count. However, be careful about 'dos style' files with \n\r in them.
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// Only treat a \n\r or \r\n as a single line.
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if ((*CurPtr == '\n' || (*CurPtr == '\r')) &&
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*CurPtr != CurChar)
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++CurPtr; // Eat the two char newline sequence.
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++CurLineNo;
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return '\n';
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}
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}
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int LLLexer::LexToken() {
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TokStart = CurPtr;
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int CurChar = getNextChar();
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switch (CurChar) {
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default:
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// Handle letters: [a-zA-Z_]
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if (isalpha(CurChar) || CurChar == '_')
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return LexIdentifier();
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return CurChar;
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case EOF: return YYEOF;
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case 0:
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case ' ':
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case '\t':
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case '\n':
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case '\r':
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// Ignore whitespace.
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return LexToken();
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case '+': return LexPositive();
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case '@': return LexAt();
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case '%': return LexPercent();
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case '"': return LexQuote();
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case '.':
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if (const char *Ptr = isLabelTail(CurPtr)) {
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CurPtr = Ptr;
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llvmAsmlval.StrVal = new std::string(TokStart, CurPtr-1);
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return LABELSTR;
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}
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if (CurPtr[0] == '.' && CurPtr[1] == '.') {
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CurPtr += 2;
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return DOTDOTDOT;
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}
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return '.';
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case '$':
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if (const char *Ptr = isLabelTail(CurPtr)) {
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CurPtr = Ptr;
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llvmAsmlval.StrVal = new std::string(TokStart, CurPtr-1);
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return LABELSTR;
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}
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return '$';
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case ';':
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SkipLineComment();
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return LexToken();
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case '0': case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9':
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case '-':
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return LexDigitOrNegative();
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}
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}
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void LLLexer::SkipLineComment() {
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while (1) {
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if (CurPtr[0] == '\n' || CurPtr[0] == '\r' || getNextChar() == EOF)
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return;
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}
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}
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/// LexAt - Lex all tokens that start with an @ character:
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/// AtStringConstant @\"[^\"]*\"
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/// GlobalVarName @[-a-zA-Z$._][-a-zA-Z$._0-9]*
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/// GlobalVarID @[0-9]+
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int LLLexer::LexAt() {
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// Handle AtStringConstant: @\"[^\"]*\"
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if (CurPtr[0] == '"') {
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++CurPtr;
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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GenerateError("End of file in global variable name");
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return YYERROR;
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}
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if (CurChar == '"') {
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llvmAsmlval.StrVal = new std::string(TokStart+2, CurPtr-1);
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UnEscapeLexed(*llvmAsmlval.StrVal);
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return ATSTRINGCONSTANT;
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}
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}
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}
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// Handle GlobalVarName: @[-a-zA-Z$._][-a-zA-Z$._0-9]*
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if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_') {
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++CurPtr;
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while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_')
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++CurPtr;
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llvmAsmlval.StrVal = new std::string(TokStart+1, CurPtr); // Skip @
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return GLOBALVAR;
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}
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// Handle GlobalVarID: @[0-9]+
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if (isdigit(CurPtr[0])) {
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for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr);
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uint64_t Val = atoull(TokStart+1, CurPtr);
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if ((unsigned)Val != Val)
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GenerateError("Invalid value number (too large)!");
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llvmAsmlval.UIntVal = unsigned(Val);
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return GLOBALVAL_ID;
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}
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return '@';
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}
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/// LexPercent - Lex all tokens that start with a % character:
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/// PctStringConstant %\"[^\"]*\"
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/// LocalVarName %[-a-zA-Z$._][-a-zA-Z$._0-9]*
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/// LocalVarID %[0-9]+
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int LLLexer::LexPercent() {
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// Handle PctStringConstant: %\"[^\"]*\"
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if (CurPtr[0] == '"') {
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++CurPtr;
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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GenerateError("End of file in local variable name");
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return YYERROR;
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}
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if (CurChar == '"') {
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llvmAsmlval.StrVal = new std::string(TokStart+2, CurPtr-1);
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UnEscapeLexed(*llvmAsmlval.StrVal);
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return PCTSTRINGCONSTANT;
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}
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}
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}
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// Handle LocalVarName: %[-a-zA-Z$._][-a-zA-Z$._0-9]*
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if (isalpha(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_') {
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++CurPtr;
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while (isalnum(CurPtr[0]) || CurPtr[0] == '-' || CurPtr[0] == '$' ||
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CurPtr[0] == '.' || CurPtr[0] == '_')
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++CurPtr;
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llvmAsmlval.StrVal = new std::string(TokStart+1, CurPtr); // Skip %
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return LOCALVAR;
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}
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// Handle LocalVarID: %[0-9]+
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if (isdigit(CurPtr[0])) {
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for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr);
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uint64_t Val = atoull(TokStart+1, CurPtr);
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if ((unsigned)Val != Val)
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GenerateError("Invalid value number (too large)!");
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llvmAsmlval.UIntVal = unsigned(Val);
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return LOCALVAL_ID;
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}
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return '%';
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}
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/// LexQuote - Lex all tokens that start with a " character:
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/// QuoteLabel "[^"]+":
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/// StringConstant "[^"]*"
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int LLLexer::LexQuote() {
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while (1) {
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int CurChar = getNextChar();
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if (CurChar == EOF) {
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GenerateError("End of file in quoted string");
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return YYERROR;
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}
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if (CurChar != '"') continue;
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if (CurPtr[0] != ':') {
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llvmAsmlval.StrVal = new std::string(TokStart+1, CurPtr-1);
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UnEscapeLexed(*llvmAsmlval.StrVal);
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return STRINGCONSTANT;
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}
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++CurPtr;
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llvmAsmlval.StrVal = new std::string(TokStart+1, CurPtr-2);
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UnEscapeLexed(*llvmAsmlval.StrVal);
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return LABELSTR;
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}
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}
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static bool JustWhitespaceNewLine(const char *&Ptr) {
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const char *ThisPtr = Ptr;
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while (*ThisPtr == ' ' || *ThisPtr == '\t')
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++ThisPtr;
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if (*ThisPtr == '\n' || *ThisPtr == '\r') {
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Ptr = ThisPtr;
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return true;
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}
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return false;
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}
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/// LexIdentifier: Handle several related productions:
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/// Label [-a-zA-Z$._0-9]+:
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/// IntegerType i[0-9]+
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/// Keyword sdiv, float, ...
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/// HexIntConstant [us]0x[0-9A-Fa-f]+
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int LLLexer::LexIdentifier() {
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const char *StartChar = CurPtr;
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const char *IntEnd = CurPtr[-1] == 'i' ? 0 : StartChar;
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const char *KeywordEnd = 0;
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for (; isLabelChar(*CurPtr); ++CurPtr) {
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// If we decide this is an integer, remember the end of the sequence.
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if (!IntEnd && !isdigit(*CurPtr)) IntEnd = CurPtr;
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if (!KeywordEnd && !isalnum(*CurPtr) && *CurPtr != '_') KeywordEnd = CurPtr;
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}
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// If we stopped due to a colon, this really is a label.
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if (*CurPtr == ':') {
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llvmAsmlval.StrVal = new std::string(StartChar-1, CurPtr++);
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return LABELSTR;
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}
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// Otherwise, this wasn't a label. If this was valid as an integer type,
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// return it.
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if (IntEnd == 0) IntEnd = CurPtr;
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if (IntEnd != StartChar) {
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CurPtr = IntEnd;
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uint64_t NumBits = atoull(StartChar, CurPtr);
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if (NumBits < IntegerType::MIN_INT_BITS ||
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NumBits > IntegerType::MAX_INT_BITS) {
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GenerateError("Bitwidth for integer type out of range!");
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return YYERROR;
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}
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const Type* Ty = IntegerType::get(NumBits);
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llvmAsmlval.PrimType = Ty;
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return INTTYPE;
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}
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// Otherwise, this was a letter sequence. See which keyword this is.
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if (KeywordEnd == 0) KeywordEnd = CurPtr;
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CurPtr = KeywordEnd;
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--StartChar;
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unsigned Len = CurPtr-StartChar;
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#define KEYWORD(STR, TOK) \
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if (Len == strlen(STR) && !memcmp(StartChar, STR, strlen(STR))) return TOK;
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KEYWORD("begin", BEGINTOK);
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KEYWORD("end", ENDTOK);
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KEYWORD("true", TRUETOK);
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KEYWORD("false", FALSETOK);
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KEYWORD("declare", DECLARE);
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KEYWORD("define", DEFINE);
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KEYWORD("global", GLOBAL);
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KEYWORD("constant", CONSTANT);
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KEYWORD("internal", INTERNAL);
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KEYWORD("linkonce", LINKONCE);
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KEYWORD("weak", WEAK);
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KEYWORD("appending", APPENDING);
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KEYWORD("dllimport", DLLIMPORT);
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KEYWORD("dllexport", DLLEXPORT);
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KEYWORD("hidden", HIDDEN);
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KEYWORD("protected", PROTECTED);
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KEYWORD("extern_weak", EXTERN_WEAK);
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KEYWORD("external", EXTERNAL);
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KEYWORD("thread_local", THREAD_LOCAL);
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KEYWORD("zeroinitializer", ZEROINITIALIZER);
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KEYWORD("undef", UNDEF);
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KEYWORD("null", NULL_TOK);
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KEYWORD("to", TO);
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KEYWORD("tail", TAIL);
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KEYWORD("target", TARGET);
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KEYWORD("triple", TRIPLE);
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KEYWORD("deplibs", DEPLIBS);
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KEYWORD("datalayout", DATALAYOUT);
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KEYWORD("volatile", VOLATILE);
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KEYWORD("align", ALIGN);
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KEYWORD("addrspace", ADDRSPACE);
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KEYWORD("section", SECTION);
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KEYWORD("alias", ALIAS);
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KEYWORD("module", MODULE);
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KEYWORD("asm", ASM_TOK);
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KEYWORD("sideeffect", SIDEEFFECT);
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KEYWORD("gc", GC);
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KEYWORD("cc", CC_TOK);
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KEYWORD("ccc", CCC_TOK);
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KEYWORD("fastcc", FASTCC_TOK);
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KEYWORD("coldcc", COLDCC_TOK);
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KEYWORD("x86_stdcallcc", X86_STDCALLCC_TOK);
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KEYWORD("x86_fastcallcc", X86_FASTCALLCC_TOK);
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KEYWORD("signext", SIGNEXT);
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KEYWORD("zeroext", ZEROEXT);
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KEYWORD("inreg", INREG);
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KEYWORD("sret", SRET);
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KEYWORD("nounwind", NOUNWIND);
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KEYWORD("noreturn", NORETURN);
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KEYWORD("noalias", NOALIAS);
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KEYWORD("byval", BYVAL);
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KEYWORD("nest", NEST);
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KEYWORD("readnone", READNONE);
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KEYWORD("readonly", READONLY);
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KEYWORD("type", TYPE);
|
|
KEYWORD("opaque", OPAQUE);
|
|
|
|
KEYWORD("eq" , EQ);
|
|
KEYWORD("ne" , NE);
|
|
KEYWORD("slt", SLT);
|
|
KEYWORD("sgt", SGT);
|
|
KEYWORD("sle", SLE);
|
|
KEYWORD("sge", SGE);
|
|
KEYWORD("ult", ULT);
|
|
KEYWORD("ugt", UGT);
|
|
KEYWORD("ule", ULE);
|
|
KEYWORD("uge", UGE);
|
|
KEYWORD("oeq", OEQ);
|
|
KEYWORD("one", ONE);
|
|
KEYWORD("olt", OLT);
|
|
KEYWORD("ogt", OGT);
|
|
KEYWORD("ole", OLE);
|
|
KEYWORD("oge", OGE);
|
|
KEYWORD("ord", ORD);
|
|
KEYWORD("uno", UNO);
|
|
KEYWORD("ueq", UEQ);
|
|
KEYWORD("une", UNE);
|
|
#undef KEYWORD
|
|
|
|
// Keywords for types.
|
|
#define TYPEKEYWORD(STR, LLVMTY, TOK) \
|
|
if (Len == strlen(STR) && !memcmp(StartChar, STR, strlen(STR))) { \
|
|
llvmAsmlval.PrimType = LLVMTY; return TOK; }
|
|
TYPEKEYWORD("void", Type::VoidTy, VOID);
|
|
TYPEKEYWORD("float", Type::FloatTy, FLOAT);
|
|
TYPEKEYWORD("double", Type::DoubleTy, DOUBLE);
|
|
TYPEKEYWORD("x86_fp80", Type::X86_FP80Ty, X86_FP80);
|
|
TYPEKEYWORD("fp128", Type::FP128Ty, FP128);
|
|
TYPEKEYWORD("ppc_fp128", Type::PPC_FP128Ty, PPC_FP128);
|
|
TYPEKEYWORD("label", Type::LabelTy, LABEL);
|
|
#undef TYPEKEYWORD
|
|
|
|
// Handle special forms for autoupgrading. Drop these in LLVM 3.0. This is
|
|
// to avoid conflicting with the sext/zext instructions, below.
|
|
if (Len == 4 && !memcmp(StartChar, "sext", 4)) {
|
|
// Scan CurPtr ahead, seeing if there is just whitespace before the newline.
|
|
if (JustWhitespaceNewLine(CurPtr))
|
|
return SIGNEXT;
|
|
} else if (Len == 4 && !memcmp(StartChar, "zext", 4)) {
|
|
// Scan CurPtr ahead, seeing if there is just whitespace before the newline.
|
|
if (JustWhitespaceNewLine(CurPtr))
|
|
return ZEROEXT;
|
|
}
|
|
|
|
// Keywords for instructions.
|
|
#define INSTKEYWORD(STR, type, Enum, TOK) \
|
|
if (Len == strlen(STR) && !memcmp(StartChar, STR, strlen(STR))) { \
|
|
llvmAsmlval.type = Instruction::Enum; return TOK; }
|
|
|
|
INSTKEYWORD("add", BinaryOpVal, Add, ADD);
|
|
INSTKEYWORD("sub", BinaryOpVal, Sub, SUB);
|
|
INSTKEYWORD("mul", BinaryOpVal, Mul, MUL);
|
|
INSTKEYWORD("udiv", BinaryOpVal, UDiv, UDIV);
|
|
INSTKEYWORD("sdiv", BinaryOpVal, SDiv, SDIV);
|
|
INSTKEYWORD("fdiv", BinaryOpVal, FDiv, FDIV);
|
|
INSTKEYWORD("urem", BinaryOpVal, URem, UREM);
|
|
INSTKEYWORD("srem", BinaryOpVal, SRem, SREM);
|
|
INSTKEYWORD("frem", BinaryOpVal, FRem, FREM);
|
|
INSTKEYWORD("shl", BinaryOpVal, Shl, SHL);
|
|
INSTKEYWORD("lshr", BinaryOpVal, LShr, LSHR);
|
|
INSTKEYWORD("ashr", BinaryOpVal, AShr, ASHR);
|
|
INSTKEYWORD("and", BinaryOpVal, And, AND);
|
|
INSTKEYWORD("or", BinaryOpVal, Or , OR );
|
|
INSTKEYWORD("xor", BinaryOpVal, Xor, XOR);
|
|
INSTKEYWORD("icmp", OtherOpVal, ICmp, ICMP);
|
|
INSTKEYWORD("fcmp", OtherOpVal, FCmp, FCMP);
|
|
|
|
INSTKEYWORD("phi", OtherOpVal, PHI, PHI_TOK);
|
|
INSTKEYWORD("call", OtherOpVal, Call, CALL);
|
|
INSTKEYWORD("trunc", CastOpVal, Trunc, TRUNC);
|
|
INSTKEYWORD("zext", CastOpVal, ZExt, ZEXT);
|
|
INSTKEYWORD("sext", CastOpVal, SExt, SEXT);
|
|
INSTKEYWORD("fptrunc", CastOpVal, FPTrunc, FPTRUNC);
|
|
INSTKEYWORD("fpext", CastOpVal, FPExt, FPEXT);
|
|
INSTKEYWORD("uitofp", CastOpVal, UIToFP, UITOFP);
|
|
INSTKEYWORD("sitofp", CastOpVal, SIToFP, SITOFP);
|
|
INSTKEYWORD("fptoui", CastOpVal, FPToUI, FPTOUI);
|
|
INSTKEYWORD("fptosi", CastOpVal, FPToSI, FPTOSI);
|
|
INSTKEYWORD("inttoptr", CastOpVal, IntToPtr, INTTOPTR);
|
|
INSTKEYWORD("ptrtoint", CastOpVal, PtrToInt, PTRTOINT);
|
|
INSTKEYWORD("bitcast", CastOpVal, BitCast, BITCAST);
|
|
INSTKEYWORD("select", OtherOpVal, Select, SELECT);
|
|
INSTKEYWORD("va_arg", OtherOpVal, VAArg , VAARG);
|
|
INSTKEYWORD("ret", TermOpVal, Ret, RET);
|
|
INSTKEYWORD("br", TermOpVal, Br, BR);
|
|
INSTKEYWORD("switch", TermOpVal, Switch, SWITCH);
|
|
INSTKEYWORD("invoke", TermOpVal, Invoke, INVOKE);
|
|
INSTKEYWORD("unwind", TermOpVal, Unwind, UNWIND);
|
|
INSTKEYWORD("unreachable", TermOpVal, Unreachable, UNREACHABLE);
|
|
|
|
INSTKEYWORD("malloc", MemOpVal, Malloc, MALLOC);
|
|
INSTKEYWORD("alloca", MemOpVal, Alloca, ALLOCA);
|
|
INSTKEYWORD("free", MemOpVal, Free, FREE);
|
|
INSTKEYWORD("load", MemOpVal, Load, LOAD);
|
|
INSTKEYWORD("store", MemOpVal, Store, STORE);
|
|
INSTKEYWORD("getelementptr", MemOpVal, GetElementPtr, GETELEMENTPTR);
|
|
|
|
INSTKEYWORD("extractelement", OtherOpVal, ExtractElement, EXTRACTELEMENT);
|
|
INSTKEYWORD("insertelement", OtherOpVal, InsertElement, INSERTELEMENT);
|
|
INSTKEYWORD("shufflevector", OtherOpVal, ShuffleVector, SHUFFLEVECTOR);
|
|
#undef INSTKEYWORD
|
|
|
|
// Check for [us]0x[0-9A-Fa-f]+ which are Hexadecimal constant generated by
|
|
// the CFE to avoid forcing it to deal with 64-bit numbers.
|
|
if ((TokStart[0] == 'u' || TokStart[0] == 's') &&
|
|
TokStart[1] == '0' && TokStart[2] == 'x' && isxdigit(TokStart[3])) {
|
|
int len = CurPtr-TokStart-3;
|
|
uint32_t bits = len * 4;
|
|
APInt Tmp(bits, TokStart+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 TokStart[0] == 's' ? ESAPINTVAL : EUAPINTVAL;
|
|
} else if (TokStart[0] == 's') {
|
|
llvmAsmlval.SInt64Val = Tmp.getSExtValue();
|
|
return ESINT64VAL;
|
|
} else {
|
|
llvmAsmlval.UInt64Val = Tmp.getZExtValue();
|
|
return EUINT64VAL;
|
|
}
|
|
}
|
|
|
|
// If this is "cc1234", return this as just "cc".
|
|
if (TokStart[0] == 'c' && TokStart[1] == 'c') {
|
|
CurPtr = TokStart+2;
|
|
return CC_TOK;
|
|
}
|
|
|
|
// If this starts with "call", return it as CALL. This is to support old
|
|
// broken .ll files. FIXME: remove this with LLVM 3.0.
|
|
if (CurPtr-TokStart > 4 && !memcmp(TokStart, "call", 4)) {
|
|
CurPtr = TokStart+4;
|
|
llvmAsmlval.OtherOpVal = Instruction::Call;
|
|
return CALL;
|
|
}
|
|
|
|
// Finally, if this isn't known, return just a single character.
|
|
CurPtr = TokStart+1;
|
|
return TokStart[0];
|
|
}
|
|
|
|
|
|
/// Lex0x: Handle productions that start with 0x, knowing that it matches and
|
|
/// that this is not a label:
|
|
/// HexFPConstant 0x[0-9A-Fa-f]+
|
|
/// HexFP80Constant 0xK[0-9A-Fa-f]+
|
|
/// HexFP128Constant 0xL[0-9A-Fa-f]+
|
|
/// HexPPC128Constant 0xM[0-9A-Fa-f]+
|
|
int LLLexer::Lex0x() {
|
|
CurPtr = TokStart + 2;
|
|
|
|
char Kind;
|
|
if (CurPtr[0] >= 'K' && CurPtr[0] <= 'M') {
|
|
Kind = *CurPtr++;
|
|
} else {
|
|
Kind = 'J';
|
|
}
|
|
|
|
if (!isxdigit(CurPtr[0])) {
|
|
// Bad token, return it as just zero.
|
|
CurPtr = TokStart+1;
|
|
return '0';
|
|
}
|
|
|
|
while (isxdigit(CurPtr[0]))
|
|
++CurPtr;
|
|
|
|
if (Kind == 'J') {
|
|
// HexFPConstant - Floating point constant represented in IEEE format as a
|
|
// hexadecimal number for when exponential notation is not precise enough.
|
|
// Float and double only.
|
|
llvmAsmlval.FPVal = new APFloat(HexToFP(TokStart+2, CurPtr));
|
|
return FPVAL;
|
|
}
|
|
|
|
uint64_t Pair[2];
|
|
HexToIntPair(TokStart+3, CurPtr, Pair);
|
|
switch (Kind) {
|
|
default: assert(0 && "Unknown kind!");
|
|
case 'K':
|
|
// F80HexFPConstant - x87 long double in hexadecimal format (10 bytes)
|
|
llvmAsmlval.FPVal = new APFloat(APInt(80, 2, Pair));
|
|
return FPVAL;
|
|
case 'L':
|
|
// F128HexFPConstant - IEEE 128-bit in hexadecimal format (16 bytes)
|
|
llvmAsmlval.FPVal = new APFloat(APInt(128, 2, Pair), true);
|
|
return FPVAL;
|
|
case 'M':
|
|
// PPC128HexFPConstant - PowerPC 128-bit in hexadecimal format (16 bytes)
|
|
llvmAsmlval.FPVal = new APFloat(APInt(128, 2, Pair));
|
|
return FPVAL;
|
|
}
|
|
}
|
|
|
|
/// LexIdentifier: Handle several related productions:
|
|
/// Label [-a-zA-Z$._0-9]+:
|
|
/// NInteger -[0-9]+
|
|
/// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
|
|
/// PInteger [0-9]+
|
|
/// HexFPConstant 0x[0-9A-Fa-f]+
|
|
/// HexFP80Constant 0xK[0-9A-Fa-f]+
|
|
/// HexFP128Constant 0xL[0-9A-Fa-f]+
|
|
/// HexPPC128Constant 0xM[0-9A-Fa-f]+
|
|
int LLLexer::LexDigitOrNegative() {
|
|
// If the letter after the negative is a number, this is probably a label.
|
|
if (!isdigit(TokStart[0]) && !isdigit(CurPtr[0])) {
|
|
// Okay, this is not a number after the -, it's probably a label.
|
|
if (const char *End = isLabelTail(CurPtr)) {
|
|
llvmAsmlval.StrVal = new std::string(TokStart, End-1);
|
|
CurPtr = End;
|
|
return LABELSTR;
|
|
}
|
|
|
|
return CurPtr[-1];
|
|
}
|
|
|
|
// At this point, it is either a label, int or fp constant.
|
|
|
|
// Skip digits, we have at least one.
|
|
for (; isdigit(CurPtr[0]); ++CurPtr);
|
|
|
|
// Check to see if this really is a label afterall, e.g. "-1:".
|
|
if (isLabelChar(CurPtr[0]) || CurPtr[0] == ':') {
|
|
if (const char *End = isLabelTail(CurPtr)) {
|
|
llvmAsmlval.StrVal = new std::string(TokStart, End-1);
|
|
CurPtr = End;
|
|
return LABELSTR;
|
|
}
|
|
}
|
|
|
|
// If the next character is a '.', then it is a fp value, otherwise its
|
|
// integer.
|
|
if (CurPtr[0] != '.') {
|
|
if (TokStart[0] == '0' && TokStart[1] == 'x')
|
|
return Lex0x();
|
|
unsigned Len = CurPtr-TokStart;
|
|
uint32_t numBits = ((Len * 64) / 19) + 2;
|
|
APInt Tmp(numBits, TokStart, Len, 10);
|
|
if (TokStart[0] == '-') {
|
|
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;
|
|
}
|
|
} else {
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
++CurPtr;
|
|
|
|
// Skip over [0-9]*([eE][-+]?[0-9]+)?
|
|
while (isdigit(CurPtr[0])) ++CurPtr;
|
|
|
|
if (CurPtr[0] == 'e' || CurPtr[0] == 'E') {
|
|
if (isdigit(CurPtr[1]) ||
|
|
((CurPtr[1] == '-' || CurPtr[1] == '+') && isdigit(CurPtr[2]))) {
|
|
CurPtr += 2;
|
|
while (isdigit(CurPtr[0])) ++CurPtr;
|
|
}
|
|
}
|
|
|
|
llvmAsmlval.FPVal = new APFloat(atof(TokStart));
|
|
return FPVAL;
|
|
}
|
|
|
|
/// FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
|
|
int LLLexer::LexPositive() {
|
|
// If the letter after the negative is a number, this is probably not a
|
|
// label.
|
|
if (!isdigit(CurPtr[0]))
|
|
return CurPtr[-1];
|
|
|
|
// Skip digits.
|
|
for (++CurPtr; isdigit(CurPtr[0]); ++CurPtr);
|
|
|
|
// At this point, we need a '.'.
|
|
if (CurPtr[0] != '.') {
|
|
CurPtr = TokStart+1;
|
|
return TokStart[0];
|
|
}
|
|
|
|
++CurPtr;
|
|
|
|
// Skip over [0-9]*([eE][-+]?[0-9]+)?
|
|
while (isdigit(CurPtr[0])) ++CurPtr;
|
|
|
|
if (CurPtr[0] == 'e' || CurPtr[0] == 'E') {
|
|
if (isdigit(CurPtr[1]) ||
|
|
((CurPtr[1] == '-' || CurPtr[1] == '+') && isdigit(CurPtr[2]))) {
|
|
CurPtr += 2;
|
|
while (isdigit(CurPtr[0])) ++CurPtr;
|
|
}
|
|
}
|
|
|
|
llvmAsmlval.FPVal = new APFloat(atof(TokStart));
|
|
return FPVAL;
|
|
}
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Define the interface to this file.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
static LLLexer *TheLexer;
|
|
|
|
void InitLLLexer(llvm::MemoryBuffer *MB) {
|
|
assert(TheLexer == 0 && "LL Lexer isn't reentrant yet");
|
|
TheLexer = new LLLexer(MB);
|
|
}
|
|
|
|
int llvmAsmlex() {
|
|
return TheLexer->LexToken();
|
|
}
|
|
const char *LLLgetTokenStart() { return TheLexer->getTokStart(); }
|
|
unsigned LLLgetTokenLength() { return TheLexer->getTokLength(); }
|
|
std::string LLLgetFilename() { return TheLexer->getFilename(); }
|
|
unsigned LLLgetLineNo() { return TheLexer->getLineNo(); }
|
|
|
|
void FreeLexer() {
|
|
delete TheLexer;
|
|
TheLexer = 0;
|
|
}
|