libyasm/bytecode.h

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#ifndef YASM_BYTECODE_H
#define YASM_BYTECODE_H

#ifndef YASM_LIB_DECL
#define YASM_LIB_DECL
#endif

typedef struct yasm_dataval yasm_dataval;
typedef struct yasm_datavalhead yasm_datavalhead;

/*@reldef@*/ STAILQ_HEAD(yasm_datavalhead, yasm_dataval);

typedef void (*yasm_bc_add_span_func)
    (void *add_span_data, yasm_bytecode *bc, int id, const yasm_value *value,
     long neg_thres, long pos_thres);

typedef struct yasm_bytecode_callback {
    void (*destroy) (/*@only@*/ void *contents);

    void (*print) (const void *contents, FILE *f, int indent_level);

    void (*finalize) (yasm_bytecode *bc, yasm_bytecode *prev_bc);

    int (*calc_len) (yasm_bytecode *bc, yasm_bc_add_span_func add_span,
                     void *add_span_data);

    int (*expand) (yasm_bytecode *bc, int span, long old_val, long new_val,
                   /*@out@*/ long *neg_thres, /*@out@*/ long *pos_thres);

    int (*tobytes) (yasm_bytecode *bc, unsigned char **bufp, void *d,
                    yasm_output_value_func output_value,
                    /*@null@*/ yasm_output_reloc_func output_reloc);

    enum yasm_bytecode_special_type {
        YASM_BC_SPECIAL_NONE = 0,

        YASM_BC_SPECIAL_RESERVE,

        YASM_BC_SPECIAL_OFFSET,

        YASM_BC_SPECIAL_INSN
    } special;
} yasm_bytecode_callback;

struct yasm_bytecode {
    /*@reldef@*/ STAILQ_ENTRY(yasm_bytecode) link;

    /*@null@*/ const yasm_bytecode_callback *callback;

    /*@dependent@*/ /*@null@*/ yasm_section *section;

    /*@only@*/ /*@null@*/ yasm_expr *multiple;

    unsigned long len;

    long mult_int;

    unsigned long line;

    unsigned long offset;

    unsigned long bc_index;

    /*@null@*/ yasm_symrec **symrecs;

    void *contents;
};

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_common
    (/*@null@*/ const yasm_bytecode_callback *callback,
     /*@only@*/ /*@null@*/ void *contents, unsigned long line);

YASM_LIB_DECL
void yasm_bc_transform(yasm_bytecode *bc,
                       const yasm_bytecode_callback *callback,
                       void *contents);

YASM_LIB_DECL
void yasm_bc_finalize_common(yasm_bytecode *bc, yasm_bytecode *prev_bc);

YASM_LIB_DECL
int yasm_bc_calc_len_common(yasm_bytecode *bc, yasm_bc_add_span_func add_span,
                            void *add_span_data);

YASM_LIB_DECL
int yasm_bc_expand_common
    (yasm_bytecode *bc, int span, long old_val, long new_val,
     /*@out@*/ long *neg_thres, /*@out@*/ long *pos_thres);

YASM_LIB_DECL
int yasm_bc_tobytes_common
    (yasm_bytecode *bc, unsigned char **bufp, void *d,
     yasm_output_value_func output_value,
     /*@null@*/ yasm_output_reloc_func output_reloc);

#define yasm_bc__next(bc)               STAILQ_NEXT(bc, link)

YASM_LIB_DECL
void yasm_bc_set_multiple(yasm_bytecode *bc, /*@keep@*/ yasm_expr *e);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_data
    (yasm_datavalhead *datahead, unsigned int size, int append_zero,
     /*@null@*/ yasm_arch *arch, unsigned long line);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_leb128
    (yasm_datavalhead *datahead, int sign, unsigned long line);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_reserve
    (/*@only@*/ yasm_expr *numitems, unsigned int itemsize,
     unsigned long line);

YASM_LIB_DECL
/*@null@*/ const yasm_expr *yasm_bc_reserve_numitems
    (yasm_bytecode *bc, /*@out@*/ unsigned int *itemsize);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_incbin
    (/*@only@*/ char *filename, /*@only@*/ /*@null@*/ yasm_expr *start,
     /*@only@*/ /*@null@*/ yasm_expr *maxlen, yasm_linemap *linemap,
     unsigned long line);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_align
    (/*@keep@*/ yasm_expr *boundary, /*@keep@*/ /*@null@*/ yasm_expr *fill,
     /*@keep@*/ /*@null@*/ yasm_expr *maxskip,
     /*@null@*/ const unsigned char **code_fill, unsigned long line);

YASM_LIB_DECL
/*@only@*/ yasm_bytecode *yasm_bc_create_org
    (unsigned long start, unsigned long fill, unsigned long line);

YASM_LIB_DECL
/*@dependent@*/ /*@null@*/ yasm_section *yasm_bc_get_section
    (yasm_bytecode *bc);

YASM_LIB_DECL
void yasm_bc__add_symrec(yasm_bytecode *bc, /*@dependent@*/ yasm_symrec *sym);

YASM_LIB_DECL
void yasm_bc_destroy(/*@only@*/ /*@null@*/ yasm_bytecode *bc);

YASM_LIB_DECL
void yasm_bc_print(const yasm_bytecode *bc, FILE *f, int indent_level);

YASM_LIB_DECL
void yasm_bc_finalize(yasm_bytecode *bc, yasm_bytecode *prev_bc);

YASM_LIB_DECL
/*@null@*/ /*@only@*/ yasm_intnum *yasm_calc_bc_dist
    (yasm_bytecode *precbc1, yasm_bytecode *precbc2);

YASM_LIB_DECL
unsigned long yasm_bc_next_offset(yasm_bytecode *precbc);

YASM_LIB_DECL
int yasm_bc_calc_len(yasm_bytecode *bc, yasm_bc_add_span_func add_span,
                     void *add_span_data);

YASM_LIB_DECL
int yasm_bc_expand(yasm_bytecode *bc, int span, long old_val, long new_val,
                   /*@out@*/ long *neg_thres, /*@out@*/ long *pos_thres);

YASM_LIB_DECL
/*@null@*/ /*@only@*/ unsigned char *yasm_bc_tobytes
    (yasm_bytecode *bc, unsigned char *buf, unsigned long *bufsize,
     /*@out@*/ int *gap, void *d, yasm_output_value_func output_value,
     /*@null@*/ yasm_output_reloc_func output_reloc)
    /*@sets *buf@*/;

YASM_LIB_DECL
int yasm_bc_get_multiple(yasm_bytecode *bc, /*@out@*/ long *multiple,
                         int calc_bc_dist);

YASM_LIB_DECL
const yasm_expr *yasm_bc_get_multiple_expr(const yasm_bytecode *bc);

YASM_LIB_DECL
/*@dependent@*/ /*@null@*/ yasm_insn *yasm_bc_get_insn(yasm_bytecode *bc);

YASM_LIB_DECL
yasm_dataval *yasm_dv_create_expr(/*@keep@*/ yasm_expr *expn);

yasm_dataval *yasm_dv_create_string(/*@keep@*/ char *contents, size_t len);

YASM_LIB_DECL
yasm_dataval *yasm_dv_create_raw(/*@keep@*/ unsigned char *contents,
                                 unsigned long len);

#ifndef YASM_DOXYGEN
#define yasm_dv_create_string(s, l) yasm_dv_create_raw((unsigned char *)(s), \
                                                       (unsigned long)(l))
#endif

void yasm_dvs_initialize(yasm_datavalhead *headp);
#ifndef YASM_DOXYGEN
#define yasm_dvs_initialize(headp)      STAILQ_INIT(headp)
#endif

YASM_LIB_DECL
void yasm_dvs_delete(yasm_datavalhead *headp);

YASM_LIB_DECL
/*@null@*/ yasm_dataval *yasm_dvs_append
    (yasm_datavalhead *headp, /*@returned@*/ /*@null@*/ yasm_dataval *dv);

YASM_LIB_DECL
void yasm_dvs_print(const yasm_datavalhead *headp, FILE *f, int indent_level);

#endif

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