src/gallium/drivers/nv50/codegen/nv50_ir_target.h

   1 /*
   2  * Copyright 2011 Christoph Bumiller
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  18  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  19  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  20  * SOFTWARE.
  21  */
  22
  23 #ifndef __NV50_IR_TARGET_H__
  24 #define __NV50_IR_TARGET_H__
  25
  26 #include "nv50_ir.h"
  27
  28 namespace nv50_ir {
  29
  30 struct RelocInfo;
  31
  32 struct RelocEntry
  33 {
  34    enum Type
  35    {
  36       TYPE_CODE,
  37       TYPE_BUILTIN,
  38       TYPE_DATA
  39    };
  40
  41    uint32_t data;
  42    uint32_t mask;
  43    uint32_t offset;
  44    int8_t bitPos;
  45    Type type;
  46
  47    inline void apply(uint32_t *binary, const RelocInfo *info) const;
  48 };
  49
  50 struct RelocInfo
  51 {
  52    uint32_t codePos;
  53    uint32_t libPos;
  54    uint32_t dataPos;
  55
  56    uint32_t count;
  57
  58    RelocEntry entry[0];
  59 };
  60
  61 class CodeEmitter
  62 {
  63 public:
  64    // returns whether the instruction was encodable and written
  65    virtual bool emitInstruction(Instruction *) = 0;
  66
  67    virtual uint32_t getMinEncodingSize(const Instruction *) const = 0;
  68
  69    void setCodeLocation(void *, uint32_t size);
  70    inline void *getCodeLocation() const { return code; }
  71    inline uint32_t getCodeSize() const { return codeSize; }
  72
  73    bool addReloc(RelocEntry::Type, int w, uint32_t data, uint32_t m,
  74                  int s);
  75
  76    inline void *getRelocInfo() const { return relocInfo; }
  77
  78    void prepareEmission(Program *);
  79    void prepareEmission(Function *);
  80    virtual void prepareEmission(BasicBlock *);
  81
  82    void printBinary() const;
  83
  84 protected:
  85    uint32_t *code;
  86    uint32_t codeSize;
  87    uint32_t codeSizeLimit;
  88
  89    RelocInfo *relocInfo;
  90 };
  91
  92 class Target
  93 {
  94 public:
  95    static Target *create(uint32_t chipset);
  96    static void destroy(Target *);
  97
  98    // 0x50 and 0x84 to 0xaf for nv50
  99    // 0xc0 to 0xdf for nvc0
 100    inline uint32_t getChipset() const { return chipset; }
 101
 102    virtual CodeEmitter *getCodeEmitter(Program::Type) = 0;
 103
 104    // Drivers should upload this so we can use it from all programs.
 105    // The address chosen is supplied to the relocation routine.
 106    virtual void getBuiltinCode(const uint32_t **code, uint32_t *size) const = 0;
 107
 108    virtual bool runLegalizePass(Program *, CGStage stage) const = 0;
 109
 110 public:
 111    struct OpInfo
 112    {
 113       OpInfo *variants;
 114       operation op;
 115       uint16_t srcTypes;
 116       uint16_t dstTypes;
 117       uint32_t immdBits;
 118       uint8_t srcNr;
 119       uint8_t srcMods[3];
 120       uint8_t dstMods;
 121       uint8_t srcFiles[3];
 122       uint8_t dstFiles;
 123       unsigned int minEncSize  : 4;
 124       unsigned int vector      : 1;
 125       unsigned int predicate   : 1;
 126       unsigned int commutative : 1;
 127       unsigned int pseudo      : 1;
 128       unsigned int flow        : 1;
 129       unsigned int hasDest     : 1;
 130       unsigned int terminator  : 1;
 131    };
 132
 133    inline const OpInfo& getOpInfo(const Instruction *) const;
 134    inline const OpInfo& getOpInfo(const operation) const;
 135
 136    inline DataFile nativeFile(DataFile f) const;
 137
 138    virtual bool insnCanLoad(const Instruction *insn, int s,
 139                             const Instruction *ld) const = 0;
 140    virtual bool isOpSupported(operation, DataType) const = 0;
 141    virtual bool isAccessSupported(DataFile, DataType) const = 0;
 142    virtual bool isModSupported(const Instruction *,
 143                                int s, Modifier) const = 0;
 144    virtual bool isSatSupported(const Instruction *) const = 0;
 145    virtual bool isPostMultiplySupported(operation op, float f,
 146                                         int& e) const { return false; }
 147    virtual bool mayPredicate(const Instruction *,
 148                              const Value *) const = 0;
 149
 150    virtual int getLatency(const Instruction *) const { return 1; }
 151    virtual int getThroughput(const Instruction *) const { return 1; }
 152
 153    virtual unsigned int getFileSize(DataFile) const = 0;
 154    virtual unsigned int getFileUnit(DataFile) const = 0;
 155
 156    virtual uint32_t getSVAddress(DataFile, const Symbol *) const = 0;
 157
 158 public:
 159    bool joinAnterior; // true if join is executed before the op
 160
 161    static const uint8_t operationSrcNr[OP_LAST + 1];
 162
 163 protected:
 164    uint32_t chipset;
 165
 166    DataFile nativeFileMap[DATA_FILE_COUNT];
 167
 168    OpInfo opInfo[OP_LAST + 1];
 169 };
 170
 171 const Target::OpInfo& Target::getOpInfo(const Instruction *insn) const
 172 {
 173    return opInfo[MIN2(insn->op, OP_LAST)];
 174 }
 175
 176 const Target::OpInfo& Target::getOpInfo(const operation op) const
 177 {
 178    return opInfo[op];
 179 }
 180
 181 inline DataFile Target::nativeFile(DataFile f) const
 182 {
 183    return nativeFileMap[f];
 184 }
 185
 186 } // namespace nv50_ir
 187
 188 #endif // __NV50_IR_TARGET_H__