segatools-dniel97/util/dll-bind.c

#include <windows.h>

#include <assert.h>
#include <stdint.h>

#include "util/dll-bind.h"
#include "util/dprintf.h"

HRESULT dll_bind(
    void *dest,
    HINSTANCE src,
    const struct dll_bind_sym **syms_pos,
    size_t syms_count)
{
    HRESULT hr;
    void *src_result;
    void **dest_field;
    const struct dll_bind_sym *current_sym;
    size_t i;

    assert(dest != NULL);
    assert(src != NULL);
    assert(syms_pos != NULL);

    hr = S_OK;
    current_sym = *syms_pos;

    assert(current_sym != NULL);

    for (i = 0; i < syms_count; i++) {
        src_result = GetProcAddress(src, current_sym->sym);

        if (src_result == NULL) {
            hr = E_NOTIMPL;

            break;
        }

        dest_field = (void **)(((uint8_t *)dest) + current_sym->off);
        *dest_field = src_result;
        current_sym++;
    }

    *syms_pos = current_sym;

    return hr;
}