segatools/util/dll-bind.h

#pragma once

#include <windows.h>

#include <stdlib.h>

struct dll_bind_sym {
    /* Symbol name to locate in the source DLL */
    const char *sym;

    /* Offset where the symbol pointer should be written in the target
       structure */
    ptrdiff_t off;
};

/*
    Bind a list of DLL symbols into a structure that contains function
    pointers.

    - dest: Pointer to destination structure.
    - src: Handle to source DLL.
    - syms_pos: Pointer to a (mutable) pointer which points to the start of an
        (immutable) table of symbols and structure offsets. This mutable
        pointer is advanced until either a symbol fails to bind, in which case
        an error is returned, or the end of the table is reached, in which
        case success is returned.
   - syms_count: Number of entries in the symbol table.
*/
HRESULT dll_bind(
        void *dest,
        HINSTANCE src,
        const struct dll_bind_sym **syms_pos,
        size_t syms_count);