mirror of
https://github.com/RPCS3/llvm-mirror.git
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428 lines
15 KiB
C++
428 lines
15 KiB
C++
/*===-- UpgradeLexer.l - Scanner for 1.9 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 Reid Spencer and is distributed under the
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// 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 1.9 assembly languages files.
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//
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//===----------------------------------------------------------------------===*/
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%option prefix="Upgrade"
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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="UpgradeLexer.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 "UpgradeInternals.h"
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#include "llvm/Module.h"
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#include <list>
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#include "UpgradeParser.h"
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#include <cctype>
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#include <cstdlib>
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#define YY_INPUT(buf,result,max_size) \
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{ \
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if (LexInput->good() && !LexInput->eof()) { \
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LexInput->read(buf,max_size); \
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result = LexInput->gcount(); \
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} else {\
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result = YY_NULL; \
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} \
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}
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#define YY_NEVER_INTERACTIVE 1
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// Construct a token value for a non-obsolete token
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#define RET_TOK(type, Enum, sym) \
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Upgradelval.type = Enum; \
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return sym
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#define RET_TY(sym,NewTY,sign) \
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Upgradelval.PrimType.T = NewTY; \
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switch (sign) { \
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case 0: Upgradelval.PrimType.S.makeSignless(); break; \
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case 1: Upgradelval.PrimType.S.makeUnsigned(); break; \
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case 2: Upgradelval.PrimType.S.makeSigned(); break; \
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default: assert(0 && "Invalid sign kind"); break; \
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}\
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return sym
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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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// 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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error("String literal cannot accept \\00 escape!");
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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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// 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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error("constant bigger than 64 bits detected!");
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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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error("constant bigger than 64 bits detected!");
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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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} // End llvm namespace
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using namespace llvm;
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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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dllimport { return DLLIMPORT; }
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dllexport { return DLLEXPORT; }
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extern_weak { return EXTERN_WEAK; }
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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 { return EXCEPT; }
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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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datalayout { return DATALAYOUT; }
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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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csretcc { return CSRETCC_TOK; }
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fastcc { return FASTCC_TOK; }
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coldcc { return COLDCC_TOK; }
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x86_stdcallcc { return X86_STDCALLCC_TOK; }
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x86_fastcallcc { return X86_FASTCALLCC_TOK; }
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sbyte { RET_TY(SBYTE, Type::Int8Ty, 2); }
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ubyte { RET_TY(UBYTE, Type::Int8Ty, 1); }
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i8 { RET_TY(UBYTE, Type::Int8Ty, 1); }
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short { RET_TY(SHORT, Type::Int16Ty, 2); }
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ushort { RET_TY(USHORT, Type::Int16Ty, 1); }
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i16 { RET_TY(USHORT, Type::Int16Ty, 1); }
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int { RET_TY(INT, Type::Int32Ty, 2); }
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uint { RET_TY(UINT, Type::Int32Ty, 1); }
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i32 { RET_TY(UINT, Type::Int32Ty, 1); }
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long { RET_TY(LONG, Type::Int64Ty, 2); }
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ulong { RET_TY(ULONG, Type::Int64Ty, 1); }
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i64 { RET_TY(ULONG, Type::Int64Ty, 1); }
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void { RET_TY(VOID, Type::VoidTy, 0); }
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bool { RET_TY(BOOL, Type::Int1Ty, 1); }
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i1 { RET_TY(BOOL, Type::Int1Ty, 1); }
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float { RET_TY(FLOAT, Type::FloatTy, 0); }
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double { RET_TY(DOUBLE, Type::DoubleTy,0); }
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label { RET_TY(LABEL, Type::LabelTy, 0); }
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type { return TYPE; }
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opaque { return OPAQUE; }
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add { RET_TOK(BinaryOpVal, AddOp, ADD); }
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sub { RET_TOK(BinaryOpVal, SubOp, SUB); }
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mul { RET_TOK(BinaryOpVal, MulOp, MUL); }
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div { RET_TOK(BinaryOpVal, DivOp, DIV); }
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udiv { RET_TOK(BinaryOpVal, UDivOp, UDIV); }
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sdiv { RET_TOK(BinaryOpVal, SDivOp, SDIV); }
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fdiv { RET_TOK(BinaryOpVal, FDivOp, FDIV); }
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rem { RET_TOK(BinaryOpVal, RemOp, REM); }
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urem { RET_TOK(BinaryOpVal, URemOp, UREM); }
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srem { RET_TOK(BinaryOpVal, SRemOp, SREM); }
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frem { RET_TOK(BinaryOpVal, FRemOp, FREM); }
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and { RET_TOK(BinaryOpVal, AndOp, AND); }
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or { RET_TOK(BinaryOpVal, OrOp , OR ); }
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xor { RET_TOK(BinaryOpVal, XorOp, 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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shl { RET_TOK(BinaryOpVal, ShlOp, SHL); }
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shr { RET_TOK(BinaryOpVal, ShrOp, SHR); }
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lshr { RET_TOK(BinaryOpVal, LShrOp, LSHR); }
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ashr { RET_TOK(BinaryOpVal, AShrOp, ASHR); }
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icmp { RET_TOK(OtherOpVal, ICmpOp, ICMP); }
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fcmp { RET_TOK(OtherOpVal, FCmpOp, FCMP); }
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eq { return EQ; }
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ne { return NE; }
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slt { return SLT; }
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sgt { return SGT; }
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sle { return SLE; }
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sge { return SGE; }
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ult { return ULT; }
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ugt { return UGT; }
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ule { return ULE; }
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uge { return UGE; }
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oeq { return OEQ; }
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one { return ONE; }
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olt { return OLT; }
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ogt { return OGT; }
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ole { return OLE; }
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oge { return OGE; }
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ord { return ORD; }
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uno { return UNO; }
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ueq { return UEQ; }
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une { return UNE; }
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phi { RET_TOK(OtherOpVal, PHIOp, PHI_TOK); }
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call { RET_TOK(OtherOpVal, CallOp, CALL); }
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cast { RET_TOK(CastOpVal, CastOp, CAST); }
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trunc { RET_TOK(CastOpVal, TruncOp, TRUNC); }
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zext { RET_TOK(CastOpVal, ZExtOp , ZEXT); }
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sext { RET_TOK(CastOpVal, SExtOp, SEXT); }
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fptrunc { RET_TOK(CastOpVal, FPTruncOp, FPTRUNC); }
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fpext { RET_TOK(CastOpVal, FPExtOp, FPEXT); }
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fptoui { RET_TOK(CastOpVal, FPToUIOp, FPTOUI); }
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fptosi { RET_TOK(CastOpVal, FPToSIOp, FPTOSI); }
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uitofp { RET_TOK(CastOpVal, UIToFPOp, UITOFP); }
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sitofp { RET_TOK(CastOpVal, SIToFPOp, SITOFP); }
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ptrtoint { RET_TOK(CastOpVal, PtrToIntOp, PTRTOINT); }
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inttoptr { RET_TOK(CastOpVal, IntToPtrOp, INTTOPTR); }
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bitcast { RET_TOK(CastOpVal, BitCastOp, BITCAST); }
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select { RET_TOK(OtherOpVal, SelectOp, SELECT); }
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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, RetOp, RET); }
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br { RET_TOK(TermOpVal, BrOp, BR); }
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switch { RET_TOK(TermOpVal, SwitchOp, SWITCH); }
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invoke { RET_TOK(TermOpVal, InvokeOp, INVOKE); }
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unwind { return UNWIND; }
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unreachable { RET_TOK(TermOpVal, UnreachableOp, UNREACHABLE); }
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malloc { RET_TOK(MemOpVal, MallocOp, MALLOC); }
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alloca { RET_TOK(MemOpVal, AllocaOp, ALLOCA); }
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free { RET_TOK(MemOpVal, FreeOp, FREE); }
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load { RET_TOK(MemOpVal, LoadOp, LOAD); }
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store { RET_TOK(MemOpVal, StoreOp, STORE); }
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getelementptr { RET_TOK(MemOpVal, GetElementPtrOp, GETELEMENTPTR); }
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extractelement { RET_TOK(OtherOpVal, ExtractElementOp, EXTRACTELEMENT); }
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insertelement { RET_TOK(OtherOpVal, InsertElementOp, INSERTELEMENT); }
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shufflevector { RET_TOK(OtherOpVal, ShuffleVectorOp, SHUFFLEVECTOR); }
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{VarID} {
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UnEscapeLexed(yytext+1);
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Upgradelval.StrVal = strdup(yytext+1); // Skip %
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return VAR_ID;
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}
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{Label} {
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yytext[strlen(yytext)-1] = 0; // nuke colon
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UnEscapeLexed(yytext);
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Upgradelval.StrVal = strdup(yytext);
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return LABELSTR;
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}
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{QuoteLabel} {
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yytext[strlen(yytext)-2] = 0; // nuke colon, end quote
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UnEscapeLexed(yytext+1);
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Upgradelval.StrVal = strdup(yytext+1);
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return LABELSTR;
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}
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{StringConstant} { // Note that we cannot unescape a string constant here! The
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// string constant might contain a \00 which would not be
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// understood by the string stuff. It is valid to make a
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// [sbyte] c"Hello World\00" constant, for example.
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//
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yytext[strlen(yytext)-1] = 0; // nuke end quote
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Upgradelval.StrVal = strdup(yytext+1); // Nuke start quote
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return STRINGCONSTANT;
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}
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{PInteger} { Upgradelval.UInt64Val = atoull(yytext); return EUINT64VAL; }
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{NInteger} {
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uint64_t Val = atoull(yytext+1);
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// +1: we have bigger negative range
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if (Val > (uint64_t)INT64_MAX+1)
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error("Constant too large for signed 64 bits!");
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Upgradelval.SInt64Val = -Val;
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return ESINT64VAL;
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}
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{HexIntConstant} {
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Upgradelval.UInt64Val = HexIntToVal(yytext+3);
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return yytext[0] == 's' ? ESINT64VAL : EUINT64VAL;
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}
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{EPInteger} {
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uint64_t Val = atoull(yytext+1);
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if ((unsigned)Val != Val)
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error("Invalid value number (too large)!");
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Upgradelval.UIntVal = unsigned(Val);
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return UINTVAL;
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}
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{ENInteger} {
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uint64_t Val = atoull(yytext+2);
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// +1: we have bigger negative range
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if (Val > (uint64_t)INT32_MAX+1)
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error("Constant too large for signed 32 bits!");
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Upgradelval.SIntVal = (int)-Val;
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return SINTVAL;
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}
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{FPConstant} { Upgradelval.FPVal = atof(yytext); return FPVAL; }
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{HexFPConstant} { Upgradelval.FPVal = HexToFP(yytext); return FPVAL; }
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<<EOF>> {
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/* Make sure to free the internal buffers for flex when we are
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* done reading our input!
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*/
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yy_delete_buffer(YY_CURRENT_BUFFER);
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return EOF;
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}
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[ \r\t\n] { /* Ignore whitespace */ }
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. { return yytext[0]; }
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%%
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