C++ (Cpp) insert_save_addr примеры использования

Пример #1

Файл: memtrace_simple.c Проект: DynamoRIO/dynamorio

/* insert inline code to add a memory reference info entry into the buffer */
static void
instrument_mem(void *drcontext, instrlist_t *ilist, instr_t *where, opnd_t ref,
               bool write)
{
    /* We need two scratch registers */
    reg_id_t reg_ptr, reg_tmp;
    if (drreg_reserve_register(drcontext, ilist, where, NULL, &reg_ptr) !=
            DRREG_SUCCESS ||
        drreg_reserve_register(drcontext, ilist, where, NULL, &reg_tmp) !=
            DRREG_SUCCESS) {
        DR_ASSERT(false); /* cannot recover */
        return;
    }
    /* save_addr should be called first as reg_ptr or reg_tmp maybe used in ref */
    insert_save_addr(drcontext, ilist, where, ref, reg_ptr, reg_tmp);
    insert_save_type(drcontext, ilist, where, reg_ptr, reg_tmp,
                     write ? REF_TYPE_WRITE : REF_TYPE_READ);
    insert_save_size(drcontext, ilist, where, reg_ptr, reg_tmp,
                     (ushort)drutil_opnd_mem_size_in_bytes(ref, where));
    insert_update_buf_ptr(drcontext, ilist, where, reg_ptr, sizeof(mem_ref_t));
    /* Restore scratch registers */
    if (drreg_unreserve_register(drcontext, ilist, where, reg_ptr) != DRREG_SUCCESS ||
        drreg_unreserve_register(drcontext, ilist, where, reg_tmp) != DRREG_SUCCESS)
        DR_ASSERT(false);
}

Пример #2

Файл: instru_offline.cpp Проект: mdlui/dynamorio

int
offline_instru_t::instrument_memref(void *drcontext, instrlist_t *ilist, instr_t *where,
                                    reg_id_t reg_ptr, reg_id_t reg_tmp, int adjust,
                                    opnd_t ref, bool write, dr_pred_type_t pred)
{
    // Post-processor distinguishes read, write, prefetch, flush, and finds size.
    instr_t *label = INSTR_CREATE_label(drcontext);
    MINSERT(ilist, where, label);
    insert_save_addr(drcontext, ilist, where, reg_ptr, reg_tmp, adjust, ref);
#ifdef ARM // X86 does not support general predicated execution
    if (pred != DR_PRED_NONE) {
        instr_t *instr;
        for (instr  = instr_get_prev(where);
             instr != label;
             instr  = instr_get_prev(instr)) {
            DR_ASSERT(!instr_is_predicated(instr));
            instr_set_predicate(instr, pred);
        }
    }
#endif
    return (adjust + sizeof(offline_entry_t));
}