mirror of https://git.wuffs.org/MWCC
111 lines
2.6 KiB
C
111 lines
2.6 KiB
C
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#pragma once
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typedef struct _PCodeArg {
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unsigned int _0;
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unsigned int _4;
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unsigned int _8;
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} PCodeArg;
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typedef struct _PCode {
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struct _PCode *nextPCode;
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struct _PCode *prevPCode;
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struct _PCBlock *block;
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unsigned int xx_C;
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unsigned int _10;
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int flags;
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unsigned int _18;
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unsigned int _1C;
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short op;
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short argCount;
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PCodeArg args[0];
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} PCode;
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typedef struct _PCLabel {
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struct _PCLabel *nextLabel;
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struct _PCBlock *block;
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short resolved;
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short index;
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} PCLabel;
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typedef struct _PCLink {
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struct _PCLink *nextLink;
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struct _PCBlock *block;
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} PCLink;
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typedef struct _PCBlock {
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struct _PCBlock *nextBlock;
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struct _PCBlock *prevBlock;
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PCLabel *labels;
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PCLink *predecessors;
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PCLink *successors;
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PCode *firstPCode;
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PCode *lastPCode;
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int blockIndex;
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int codeOffset; // in bytes
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int loopWeight;
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short pcodeCount;
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unsigned short flags;
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} PCBlock;
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/* PCode Flags */
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enum {
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fPCodeFlag1 = 1,
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fPCodeFlag2 = 2,
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fPCodeFlag4 = 4,
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fPCodeFlag8 = 8,
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fPCodeFlag10 = 0x10,
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fIsPtrOp = 0x20,
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fIsConst = 0x40,
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fIsVolatile = 0x80,
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fSideEffects = 0x100,
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fPCodeFlag200 = 0x200,
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fPCodeFlag400 = 0x400,
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fPCodeFlag800 = 0x800,
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fPCodeFlag1000 = 0x1000,
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fCommutative = 0x2000,
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fIsCSE = 0x4000,
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fOverflow = 0x800000,
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fLink = 0x1000000,
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fBranchNotTaken = 0x4000000,
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fBranchTaken = 0x8000000,
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fAbsolute = 0x10000000,
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fSetsCarry = 0x10000000,
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};
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enum {
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fPCBlockFlag1 = 1,
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fPCBlockFlag2 = 2,
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fPCBlockFlag4 = 4,
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fPCBlockFlag8 = 8,
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fPCBlockFlag10 = 0x10,
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fPCBlockFlag20 = 0x20
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};
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extern PCBlock *pcbasicblocks;
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extern PCBlock *pclastblock;
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extern void *prologue;
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extern void *epilogue;
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extern PCBlock **depthfirstordering;
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extern int pcblockcount;
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extern int pcloopweight;
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extern void initpcode();
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extern PCode *makepcode(short op, ...);
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extern void emitpcode(short op, ...);
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extern PCode *copypcode(PCode *pcode);
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extern PCLabel *makepclabel();
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extern PCBlock *makepcblock();
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extern void pclabel(PCBlock *block, PCLabel *label);
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extern void pcbranch(PCBlock *block, PCLabel *label);
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extern void pccomputepredecessors();
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extern void deleteblock(PCBlock *block);
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extern void deleteunreachableblocks();
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extern void appendpcode(PCBlock *block, PCode *pcode);
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extern void deletepcode(PCode *pcode);
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extern void insertpcodebefore(PCode *anchor, PCode *newpcode);
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extern void insertpcodeafter(PCode *anchor, PCode *newpcode);
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extern void setpcodeflags(int flags);
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extern void clearpcodeflags(int flags);
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extern int pccomputeoffsets();
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extern void computedepthfirstordering();
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