register.c

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// SPDX-License-Identifier: GPL-2.0-or-later
 
/***************************************************************************
 *   Copyright (C) 2005 by Dominic Rath                                    *
 *   Dominic.Rath@gmx.de                                                   *
 *                                                                         *
 *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
 *   oyvind.harboe@zylin.com                                               *
 ***************************************************************************/
 
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
 
#include "register.h"
#include <helper/log.h>
 
struct reg *register_get_by_number(struct reg_cache *first,
        uint32_t reg_num, bool search_all)
{
    struct reg_cache *cache = first;
 
    while (cache) {
        for (unsigned int i = 0; i < cache->num_regs; i++) {
            if (!cache->reg_list[i].exist)
                continue;
            if (cache->reg_list[i].number == reg_num)
                return &(cache->reg_list[i]);
        }
 
        if (!search_all)
            break;
 
        cache = cache->next;
    }
 
    return NULL;
}
 
struct reg *register_get_by_name(struct reg_cache *first,
        const char *name, bool search_all)
{
    struct reg_cache *cache = first;
 
    while (cache) {
        for (unsigned int i = 0; i < cache->num_regs; i++) {
            if (!cache->reg_list[i].exist)
                continue;
            if (strcmp(cache->reg_list[i].name, name) == 0)
                return &(cache->reg_list[i]);
        }
 
        if (!search_all)
            break;
 
        cache = cache->next;
    }
 
    return NULL;
}
 
struct reg_cache **register_get_last_cache_p(struct reg_cache **first)
{
    struct reg_cache **cache_p = first;
 
    if (*cache_p)
        while (*cache_p)
            cache_p = &((*cache_p)->next);
    else
        return first;
 
    return cache_p;
}
 
void register_unlink_cache(struct reg_cache **cache_p, const struct reg_cache *cache)
{
    while (*cache_p && *cache_p != cache)
        cache_p = &((*cache_p)->next);
    if (*cache_p)
        *cache_p = cache->next;
}
 
void register_cache_invalidate(struct reg_cache *cache)
{
    struct reg *reg = cache->reg_list;
 
    for (unsigned int n = cache->num_regs; n != 0; n--, reg++) {
        if (!reg->exist)
            continue;
        reg->valid = false;
        reg->dirty = false;
    }
}
 
static int register_get_dummy_core_reg(struct reg *reg)
{
    return ERROR_OK;
}
 
static int register_set_dummy_core_reg(struct reg *reg, uint8_t *buf)
{
    reg->dirty = true;
    reg->valid = true;
 
    return ERROR_OK;
}
 
static const struct reg_arch_type dummy_type = {
    .get = register_get_dummy_core_reg,
    .set = register_set_dummy_core_reg,
};
 
void register_init_dummy(struct reg *reg)
{
    reg->type = &dummy_type;
}