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#ifndef COMPILER_PCODE_H
#define COMPILER_PCODE_H
#include "compiler/common.h"
#include "compiler/PCodeInfo.h"
#ifdef __MWERKS__
#pragma options align=mac68k
#endif
#define FLAG_SET_T(flags) (((flags) & (fIsBranch | fIsCall)) ? (flags) : 0)
#define FLAG_SET_F(flags) (((flags) & (fIsBranch | fIsCall)) ? 0 : (flags))
#define PCODE_FLAG_SET_T(pcode) (((pcode)->flags & (fIsBranch | fIsCall)) ? (pcode)->flags : 0)
#define PCODE_FLAG_SET_F(pcode) (((pcode)->flags & (fIsBranch | fIsCall)) ? 0 : (pcode)->flags)
enum {
EffectRead = 1,
EffectWrite = 2,
Effect4 = 4,
Effect8 = 8,
Effect40 = 0x40 // spilled register?
};
typedef enum {
RefType_0,
RefType_1, // like D, but 32-bit?
RefType_2, // matches MW_RELOC_3?
RefType_3, // matches MW_RELOC_4?
RefType_4,
RefType_5,
RefType_6, // LO16?
RefType_7, // HI16?
RefType_8, // HA16?
RefType_9,
RefType_A, // another LO
RefType_B, // another HA
RefType_C, // another HA
RefType_D // another LO
} PCRefType;
struct PCodeArg {
PCOpKind kind;
RegClass arg;
union {
struct {
unsigned short effect;
short reg;
} reg;
struct {
SInt32 value;
Object *obj;
} imm;
struct {
SInt32 offset;
Object *obj;
} mem;
struct {
PCodeLabel *label;
} label;
struct {
SInt16 offset;
PCodeLabel *labelA;
PCodeLabel *labelB;
} labeldiff;
unsigned char placeholder[10]; // keep the size
} data;
};
#define PC_OP_IS_REGISTER(_op, _rclass, _reg) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
(_op)->data.reg.reg == (_reg))
#define PC_OP_IS_READ_REGISTER(_op, _rclass, _reg) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
(_op)->data.reg.reg == (_reg) && \
((_op)->data.reg.effect & EffectRead))
#define PC_OP_IS_WRITE_REGISTER(_op, _rclass, _reg) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
(_op)->data.reg.reg == (_reg) && \
((_op)->data.reg.effect & EffectWrite))
#define PC_OP_IS_R_OR_W_REGISTER(_op, _rclass, _reg) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
(_op)->data.reg.reg == (_reg) && \
((_op)->data.reg.effect & (EffectRead | EffectWrite)))
#define PC_OP_IS_ANY_REGISTER(_op, _rclass) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass))
#define PC_OP_IS_READ_ANY_REGISTER(_op, _rclass) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
((_op)->data.reg.effect & EffectRead))
#define PC_OP_IS_WRITE_ANY_REGISTER(_op, _rclass) \
((_op)->kind == PCOp_REGISTER && \
(_op)->arg == (_rclass) && \
((_op)->data.reg.effect & EffectWrite))
struct PCode {
PCode *nextPCode;
PCode *prevPCode;
PCodeBlock *block;
int useID;
int defID;
UInt32 flags;
struct Alias *alias;
SInt32 sourceoffset;
short op;
short argCount;
PCodeArg args[0];
};
struct PCodeLabel {
PCodeLabel *nextLabel;
PCodeBlock *block;
short resolved;
unsigned short index;
};
typedef struct _PCLink {
struct _PCLink *nextLink;
struct PCodeBlock *block;
} PCLink;
struct PCodeBlock {
struct PCodeBlock *nextBlock;
struct PCodeBlock *prevBlock;
PCodeLabel *labels;
PCLink *predecessors;
PCLink *successors;
PCode *firstPCode;
PCode *lastPCode;
int blockIndex;
int codeOffset; // in bytes
int loopWeight;
short pcodeCount;
unsigned short flags;
};
/* PCode Flags */
enum {
fIsBranch = 1,
fIsRead = 2, // read from memory
fIsWrite = 4, // write to memory
fIsCall = 8,
fIsMove = 0x10, // moves register (mcrf, mr, fmr, vmr, vmrp)
// Always valid
fIsConst = 0x40,
fIsVolatile = 0x80,
fSideEffects = 0x100, // instructions that do weird stuff with PPC state
fPCodeFlag200 = 0x200, // ?
fPCodeFlag400 = 0x400, // ?
fPCodeFlag800 = 0x800, // ?
fPCodeFlag1000 = 0x1000, // ?
fCommutative = 0x2000,
fIsCSE = 0x4000,
fIsArgInit = 0x8000, // instruction that stores varargs from GPRs to the stack
fPCodeFlag20000 = 0x20000, // some kinda load?
fPCodeFlag40000 = 0x40000, // some kinda store?
// Set 1 (branches) only
fLink = 0x1000000,
fCanLink = 0x2000000, // is capable of being a link branch
fBranchNotTaken = 0x4000000,
fBranchTaken = 0x8000000,
fAbsolute = 0x10000000,
fCanBeAbsolute = 0x20000000, // is capable of having fAbsolute set
// Set 2 (non-branches) only
fIsPtrOp = 0x20,
fPCodeFlag200000 = 0x200000,
fPCodeFlag400000 = 0x400000,
fOverflow = 0x800000,
fUpdatesPtr = 0x2000000, // lbzu, lbzux, lwzu, stbu, stbux, etc
fCanSetCarry = 0x4000000, // is capable of having fSetsCarry set
fCanSetRecordBit = 0x8000000, // is capable of having fRecordBit set
fSetsCarry = 0x10000000,
fRecordBit = 0x20000000,
fOpTypeFPR = 0x40000000,
fOpTypeGPR = 0x80000000,
fOpTypeVR = 0xC0000000,
fOpTypeMask = 0xC0000000
};
enum {
fIsProlog = 1, // fIsProlog
fIsEpilogue = 2, // fIsEpilogue
fVisited = 4, // fVisited
fScheduled = 8, // fScheduled
fPCBlockFlag10 = 0x10, // maybe fIsSwitch based off v3?
fDeleted = 0x20,
fPCBlockFlag2000 = 0x2000,
fPCBlockFlag4000 = 0x4000,
fPCBlockFlag6000 = 0x6000,
fPCBlockFlag8000 = 0x8000
};
// v3 has fCCisLiveOnExit, fUnrolled, fAlignBlock
extern PCodeBlock *pcbasicblocks;
extern PCodeBlock *pclastblock;
extern PCodeBlock *prologue;
extern PCodeBlock *epilogue;
extern PCodeBlock **depthfirstordering;
extern int pcblockcount;
extern int pcloopweight;
extern void initpcode(void);
extern PCode *makepcode(Opcode op, ...);
extern void emitpcode(Opcode op, ...);
extern PCode *copypcode(PCode *pcode);
extern PCodeLabel *makepclabel(void);
extern PCodeBlock *makepcblock(void);
extern void pclabel(PCodeBlock *block, PCodeLabel *label);
extern void pcbranch(PCodeBlock *block, PCodeLabel *label);
extern void pccomputepredecessors(void);
extern void deleteblock(PCodeBlock *block);
extern void deleteunreachableblocks(void);
extern void appendpcode(PCodeBlock *block, PCode *pcode);
extern void deletepcode(PCode *pcode);
extern void insertpcodebefore(PCode *anchor, PCode *newpcode);
extern void insertpcodeafter(PCode *anchor, PCode *newpcode);
extern void setpcodeflags(int flags);
extern void clearpcodeflags(int flags);
extern int pccomputeoffsets(void);
extern void computedepthfirstordering(void);
#ifdef __MWERKS__
#pragma options align=reset
#endif
#endif
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