shithub: mc

ref: a6555761c1462da6c9f4134489a4d9b70bd1a0ea
dir: /8/gen.h/

typedef struct Comp Comp;
typedef struct Blob Blob;
typedef struct Fn   Fn;
typedef struct Bb   Bb;

struct Comp {
    /* we generate blobs and functions */
    Blob **globl;
    size_t nglobl;
    Fn **func;
    size_t nfunc;
};

struct Blob {
    char *name; /* mangled asm name */
    void *data;
    size_t ndata;
};

struct Fn {
    char *name; /* assembly name; mangled */
    int isglobl;

    /* filled in by the lowering process */
    size_t stksz;
    size_t argsz;
    Htab *locs;
    Node *ret;

    Htab *bbnames; /* char* => Bb* map */
    Bb *start;
    Bb *end;
    Bb *cur;
    Bb **bb;
    size_t nbb;
    /* we can't know all the edges as we
     * construct the bb list, so we fix up later */
    Bb **fixup;
    size_t nfixup;

    /* FIXME: do we want the node list raw here? For now, it's here. */
    Node **nl;
    size_t nn;

};

struct Bb {
    int id;

    /* nodes in bb */
    Node **n;
    size_t nn;

    /* edges */
    Bb **in;
    size_t nin;
    Bb **out;
    size_t nout;
};

/* toplevel code gen */
Comp *mkcomp(Node *f);
void gen(Node *file, char *out);
void assemble(char *asmfile, char *out);
void compdump(Comp *c, FILE *fd);

/* cfg */
Fn *mkfn(char *name);
Bb *mkbb(void);
void edge(Bb *from, Bb *to);
Node **reduce(Fn *fn, Node *n, int *ret_nn);