2006-02-14 05:14:46 +00:00
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/*===-- Lexer.l - Scanner for llvm assembly files --------------*- C++ -*--===//
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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 the LLVM research group 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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// This file implements the flex scanner for LLVM assembly languages files.
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//
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//===----------------------------------------------------------------------===*/
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%option prefix="llvmAsm"
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%option yylineno
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%option nostdinit
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%option never-interactive
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%option batch
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%option noyywrap
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%option nodefault
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%option 8bit
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%option outfile="Lexer.cpp"
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%option ecs
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%option noreject
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%option noyymore
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%{
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#include "ParserInternals.h"
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#include "llvm/Module.h"
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#include <list>
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#include "llvmAsmParser.h"
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#include <cctype>
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#include <cstdlib>
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void set_scan_file(FILE * F){
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yy_switch_to_buffer(yy_create_buffer( F, YY_BUF_SIZE ) );
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}
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void set_scan_string (const char * str) {
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yy_scan_string (str);
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}
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2006-11-02 20:25:50 +00:00
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// Construct a token value for a non-obsolete token
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2006-02-14 05:14:46 +00:00
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#define RET_TOK(type, Enum, sym) \
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2006-11-02 20:25:50 +00:00
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llvmAsmlval.type.opcode = Instruction::Enum; \
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llvmAsmlval.type.obsolete = false; \
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return sym
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// Construct a token value for an obsolete token
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#define RET_TOK_OBSOLETE(type, Enum, sym) \
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llvmAsmlval.type.opcode = Instruction::Enum; \
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llvmAsmlval.type.obsolete = true; \
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return sym
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2006-11-27 01:05:10 +00:00
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// Construct a token value for an obsolete token
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2006-12-01 00:33:46 +00:00
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#define RET_TY(CTYPE, SIGN, SYM) \
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llvmAsmlval.TypeVal.type = new PATypeHolder(CTYPE); \
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llvmAsmlval.TypeVal.signedness = SIGN; \
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return SYM
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2006-02-14 05:14:46 +00:00
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namespace llvm {
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// TODO: All of the static identifiers are figured out by the lexer,
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// these should be hashed to reduce the lexer size
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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) {
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uint64_t Result = 0;
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for (; *Buffer; 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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2006-08-18 08:43:06 +00:00
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GenerateError("constant bigger than 64 bits detected!");
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2006-02-14 05:14:46 +00:00
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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) {
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uint64_t Result = 0;
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for (; *Buffer; ++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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2006-08-18 08:43:06 +00:00
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GenerateError("constant bigger than 64 bits detected!");
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2006-02-14 05:14:46 +00:00
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}
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return Result;
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}
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// HexToFP - Convert the ascii string in hexidecimal 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) {
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// Behave nicely in the face of C TBAA rules... see:
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// http://www.nullstone.com/htmls/category/aliastyp.htm
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union {
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uint64_t UI;
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double FP;
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} UIntToFP;
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UIntToFP.UI = HexIntToVal(Buffer);
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assert(sizeof(double) == sizeof(uint64_t) &&
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"Data sizes incompatible on this target!");
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return UIntToFP.FP; // Cast Hex constant to double
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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. If AllowNull is set to false, a \00 value will cause
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// an exception to be thrown.
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//
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// If AllowNull is set to true, the return value of the function points to the
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// last character of the string in memory.
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//
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char *UnEscapeLexed(char *Buffer, bool AllowNull) {
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char *BOut = Buffer;
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for (char *BIn = Buffer; *BIn; ) {
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if (BIn[0] == '\\' && 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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if (!AllowNull && !*BOut)
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2006-08-18 08:43:06 +00:00
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GenerateError("String literal cannot accept \\00 escape!");
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2006-02-14 05:14:46 +00:00
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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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}
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return BOut;
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}
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} // End llvm namespace
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using namespace llvm;
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#define YY_NEVER_INTERACTIVE 1
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%}
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/* Comments start with a ; and go till end of line */
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Comment ;.*
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/* Variable(Value) identifiers start with a % sign */
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VarID %[-a-zA-Z$._][-a-zA-Z$._0-9]*
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/* Label identifiers end with a colon */
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Label [-a-zA-Z$._0-9]+:
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QuoteLabel \"[^\"]+\":
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/* Quoted names can contain any character except " and \ */
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StringConstant \"[^\"]*\"
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/* [PN]Integer: match positive and negative literal integer values that
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* are preceeded by a '%' character. These represent unnamed variable slots.
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*/
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EPInteger %[0-9]+
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ENInteger %-[0-9]+
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/* E[PN]Integer: match positive and negative literal integer values */
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PInteger [0-9]+
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NInteger -[0-9]+
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/* FPConstant - A Floating point constant.
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*/
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FPConstant [-+]?[0-9]+[.][0-9]*([eE][-+]?[0-9]+)?
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/* HexFPConstant - Floating point constant represented in IEEE format as a
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* hexadecimal number for when exponential notation is not precise enough.
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*/
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HexFPConstant 0x[0-9A-Fa-f]+
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/* HexIntConstant - Hexadecimal constant generated by the CFE to avoid forcing
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* it to deal with 64 bit numbers.
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*/
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HexIntConstant [us]0x[0-9A-Fa-f]+
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%%
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{Comment} { /* Ignore comments for now */ }
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begin { return BEGINTOK; }
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end { return ENDTOK; }
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true { return TRUETOK; }
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false { return FALSETOK; }
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declare { return DECLARE; }
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global { return GLOBAL; }
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constant { return CONSTANT; }
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internal { return INTERNAL; }
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linkonce { return LINKONCE; }
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weak { return WEAK; }
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appending { return APPENDING; }
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2006-09-14 18:23:27 +00:00
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dllimport { return DLLIMPORT; }
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dllexport { return DLLEXPORT; }
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extern_weak { return EXTERN_WEAK; }
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2006-02-14 05:14:46 +00:00
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uninitialized { return EXTERNAL; } /* Deprecated, turn into external */
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external { return EXTERNAL; }
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implementation { return IMPLEMENTATION; }
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zeroinitializer { return ZEROINITIALIZER; }
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\.\.\. { return DOTDOTDOT; }
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undef { return UNDEF; }
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null { return NULL_TOK; }
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to { return TO; }
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except { RET_TOK(TermOpVal, Unwind, UNWIND); }
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not { return NOT; } /* Deprecated, turned into XOR */
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tail { return TAIL; }
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target { return TARGET; }
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triple { return TRIPLE; }
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deplibs { return DEPLIBS; }
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endian { return ENDIAN; }
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pointersize { return POINTERSIZE; }
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2006-10-22 06:08:13 +00:00
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datalayout { return DATALAYOUT; }
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2006-02-14 05:14:46 +00:00
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little { return LITTLE; }
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big { return BIG; }
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volatile { return VOLATILE; }
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align { return ALIGN; }
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section { return SECTION; }
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module { return MODULE; }
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asm { return ASM_TOK; }
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sideeffect { return SIDEEFFECT; }
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cc { return CC_TOK; }
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ccc { return CCC_TOK; }
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2006-05-19 21:28:53 +00:00
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csretcc { return CSRETCC_TOK; }
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2006-02-14 05:14:46 +00:00
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fastcc { return FASTCC_TOK; }
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coldcc { return COLDCC_TOK; }
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2006-09-17 20:25:45 +00:00
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x86_stdcallcc { return X86_STDCALLCC_TOK; }
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x86_fastcallcc { return X86_FASTCALLCC_TOK; }
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2006-02-14 05:14:46 +00:00
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2006-12-01 00:33:46 +00:00
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void { RET_TY(Type::VoidTy, isSignless, VOID); }
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bool { RET_TY(Type::BoolTy, isSignless, BOOL); }
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sbyte { RET_TY(Type::SByteTy, isSigned, SBYTE); }
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ubyte { RET_TY(Type::UByteTy, isUnsigned, UBYTE); }
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short { RET_TY(Type::ShortTy, isSigned, SHORT); }
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ushort { RET_TY(Type::UShortTy,isUnsigned, USHORT);}
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int { RET_TY(Type::IntTy, isSigned, INT); }
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uint { RET_TY(Type::UIntTy, isUnsigned, UINT); }
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long { RET_TY(Type::LongTy, isSigned, LONG); }
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ulong { RET_TY(Type::ULongTy, isUnsigned, ULONG); }
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float { RET_TY(Type::FloatTy, isSignless, FLOAT); }
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double { RET_TY(Type::DoubleTy,isSignless, DOUBLE);}
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label { RET_TY(Type::LabelTy, isSignless, LABEL); }
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2006-02-14 05:14:46 +00:00
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type { return TYPE; }
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opaque { return OPAQUE; }
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add { RET_TOK(BinaryOpVal, Add, ADD); }
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sub { RET_TOK(BinaryOpVal, Sub, SUB); }
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mul { RET_TOK(BinaryOpVal, Mul, MUL); }
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2006-11-02 20:25:50 +00:00
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div { RET_TOK_OBSOLETE(BinaryOpVal, UDiv, UDIV); }
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udiv { RET_TOK(BinaryOpVal, UDiv, UDIV); }
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sdiv { RET_TOK(BinaryOpVal, SDiv, SDIV); }
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fdiv { RET_TOK(BinaryOpVal, FDiv, FDIV); }
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rem { RET_TOK_OBSOLETE(BinaryOpVal, URem, UREM); }
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urem { RET_TOK(BinaryOpVal, URem, UREM); }
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srem { RET_TOK(BinaryOpVal, SRem, SREM); }
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frem { RET_TOK(BinaryOpVal, FRem, FREM); }
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2006-02-14 05:14:46 +00:00
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and { RET_TOK(BinaryOpVal, And, AND); }
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or { RET_TOK(BinaryOpVal, Or , OR ); }
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xor { RET_TOK(BinaryOpVal, Xor, XOR); }
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setne { RET_TOK(BinaryOpVal, SetNE, SETNE); }
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seteq { RET_TOK(BinaryOpVal, SetEQ, SETEQ); }
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setlt { RET_TOK(BinaryOpVal, SetLT, SETLT); }
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setgt { RET_TOK(BinaryOpVal, SetGT, SETGT); }
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setle { RET_TOK(BinaryOpVal, SetLE, SETLE); }
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setge { RET_TOK(BinaryOpVal, SetGE, SETGE); }
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phi { RET_TOK(OtherOpVal, PHI, PHI_TOK); }
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call { RET_TOK(OtherOpVal, Call, CALL); }
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2006-11-27 01:05:10 +00:00
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cast { RET_TOK_OBSOLETE(CastOpVal, Trunc, TRUNC); }
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trunc { RET_TOK(CastOpVal, Trunc, TRUNC); }
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zext { RET_TOK(CastOpVal, ZExt, ZEXT); }
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sext { RET_TOK(CastOpVal, SExt, SEXT); }
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fptrunc { RET_TOK(CastOpVal, FPTrunc, FPTRUNC); }
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fpext { RET_TOK(CastOpVal, FPExt, FPEXT); }
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uitofp { RET_TOK(CastOpVal, UIToFP, UITOFP); }
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sitofp { RET_TOK(CastOpVal, SIToFP, SITOFP); }
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fptoui { RET_TOK(CastOpVal, FPToUI, FPTOUI); }
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fptosi { RET_TOK(CastOpVal, FPToSI, FPTOSI); }
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inttoptr { RET_TOK(CastOpVal, IntToPtr, INTTOPTR); }
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ptrtoint { RET_TOK(CastOpVal, PtrToInt, PTRTOINT); }
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bitcast { RET_TOK(CastOpVal, BitCast, BITCAST); }
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2006-02-14 05:14:46 +00:00
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select { RET_TOK(OtherOpVal, Select, SELECT); }
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shl { RET_TOK(OtherOpVal, Shl, SHL); }
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2006-11-27 01:05:10 +00:00
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shr { RET_TOK_OBSOLETE(OtherOpVal, LShr, LSHR); }
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lshr { RET_TOK(OtherOpVal, LShr, LSHR); }
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ashr { RET_TOK(OtherOpVal, AShr, ASHR); }
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2006-02-14 05:14:46 +00:00
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vanext { return VANEXT_old; }
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vaarg { return VAARG_old; }
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va_arg { RET_TOK(OtherOpVal, VAArg , VAARG); }
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ret { RET_TOK(TermOpVal, Ret, RET); }
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br { RET_TOK(TermOpVal, Br, BR); }
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switch { RET_TOK(TermOpVal, Switch, SWITCH); }
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invoke { RET_TOK(TermOpVal, Invoke, INVOKE); }
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unwind { RET_TOK(TermOpVal, Unwind, UNWIND); }
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unreachable { RET_TOK(TermOpVal, Unreachable, UNREACHABLE); }
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malloc { RET_TOK(MemOpVal, Malloc, MALLOC); }
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alloca { RET_TOK(MemOpVal, Alloca, ALLOCA); }
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free { RET_TOK(MemOpVal, Free, FREE); }
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load { RET_TOK(MemOpVal, Load, LOAD); }
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store { RET_TOK(MemOpVal, Store, STORE); }
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getelementptr { RET_TOK(MemOpVal, GetElementPtr, GETELEMENTPTR); }
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extractelement { RET_TOK(OtherOpVal, ExtractElement, EXTRACTELEMENT); }
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insertelement { RET_TOK(OtherOpVal, InsertElement, INSERTELEMENT); }
|
2006-04-08 01:18:56 +00:00
|
|
|
shufflevector { RET_TOK(OtherOpVal, ShuffleVector, SHUFFLEVECTOR); }
|
2006-02-14 05:14:46 +00:00
|
|
|
|
|
|
|
|
|
|
|
{VarID} {
|
|
|
|
UnEscapeLexed(yytext+1);
|
|
|
|
llvmAsmlval.StrVal = strdup(yytext+1); // Skip %
|
|
|
|
return VAR_ID;
|
|
|
|
}
|
|
|
|
{Label} {
|
|
|
|
yytext[strlen(yytext)-1] = 0; // nuke colon
|
|
|
|
UnEscapeLexed(yytext);
|
|
|
|
llvmAsmlval.StrVal = strdup(yytext);
|
|
|
|
return LABELSTR;
|
|
|
|
}
|
|
|
|
{QuoteLabel} {
|
|
|
|
yytext[strlen(yytext)-2] = 0; // nuke colon, end quote
|
|
|
|
UnEscapeLexed(yytext+1);
|
|
|
|
llvmAsmlval.StrVal = strdup(yytext+1);
|
|
|
|
return LABELSTR;
|
|
|
|
}
|
|
|
|
|
|
|
|
{StringConstant} { // Note that we cannot unescape a string constant here! The
|
|
|
|
// string constant might contain a \00 which would not be
|
|
|
|
// understood by the string stuff. It is valid to make a
|
|
|
|
// [sbyte] c"Hello World\00" constant, for example.
|
|
|
|
//
|
|
|
|
yytext[strlen(yytext)-1] = 0; // nuke end quote
|
|
|
|
llvmAsmlval.StrVal = strdup(yytext+1); // Nuke start quote
|
|
|
|
return STRINGCONSTANT;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
{PInteger} { llvmAsmlval.UInt64Val = atoull(yytext); return EUINT64VAL; }
|
|
|
|
{NInteger} {
|
|
|
|
uint64_t Val = atoull(yytext+1);
|
|
|
|
// +1: we have bigger negative range
|
|
|
|
if (Val > (uint64_t)INT64_MAX+1)
|
2006-08-18 08:43:06 +00:00
|
|
|
GenerateError("Constant too large for signed 64 bits!");
|
2006-02-14 05:14:46 +00:00
|
|
|
llvmAsmlval.SInt64Val = -Val;
|
|
|
|
return ESINT64VAL;
|
|
|
|
}
|
|
|
|
{HexIntConstant} {
|
|
|
|
llvmAsmlval.UInt64Val = HexIntToVal(yytext+3);
|
|
|
|
return yytext[0] == 's' ? ESINT64VAL : EUINT64VAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
{EPInteger} {
|
|
|
|
uint64_t Val = atoull(yytext+1);
|
|
|
|
if ((unsigned)Val != Val)
|
2006-08-18 08:43:06 +00:00
|
|
|
GenerateError("Invalid value number (too large)!");
|
2006-02-14 05:14:46 +00:00
|
|
|
llvmAsmlval.UIntVal = unsigned(Val);
|
|
|
|
return UINTVAL;
|
|
|
|
}
|
|
|
|
{ENInteger} {
|
|
|
|
uint64_t Val = atoull(yytext+2);
|
|
|
|
// +1: we have bigger negative range
|
|
|
|
if (Val > (uint64_t)INT32_MAX+1)
|
2006-08-18 08:43:06 +00:00
|
|
|
GenerateError("Constant too large for signed 32 bits!");
|
2006-02-14 05:14:46 +00:00
|
|
|
llvmAsmlval.SIntVal = (int)-Val;
|
|
|
|
return SINTVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
{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]; }
|
|
|
|
|
|
|
|
%%
|