diff options
Diffstat (limited to 'hw/fifo.c')
-rw-r--r-- | hw/fifo.c | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/hw/fifo.c b/hw/fifo.c deleted file mode 100644 index 68a955a77b..0000000000 --- a/hw/fifo.c +++ /dev/null @@ -1,78 +0,0 @@ -/* - * Generic FIFO component, implemented as a circular buffer. - * - * Copyright (c) 2012 Peter A. G. Crosthwaite - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, see <http://www.gnu.org/licenses/>. - */ - -#include "fifo.h" - -void fifo8_create(Fifo8 *fifo, uint32_t capacity) -{ - fifo->data = g_new(uint8_t, capacity); - fifo->capacity = capacity; - fifo->head = 0; - fifo->num = 0; -} - -void fifo8_destroy(Fifo8 *fifo) -{ - g_free(fifo->data); -} - -void fifo8_push(Fifo8 *fifo, uint8_t data) -{ - if (fifo->num == fifo->capacity) { - abort(); - } - fifo->data[(fifo->head + fifo->num) % fifo->capacity] = data; - fifo->num++; -} - -uint8_t fifo8_pop(Fifo8 *fifo) -{ - uint8_t ret; - - if (fifo->num == 0) { - abort(); - } - ret = fifo->data[fifo->head++]; - fifo->head %= fifo->capacity; - fifo->num--; - return ret; -} - -void fifo8_reset(Fifo8 *fifo) -{ - fifo->num = 0; -} - -bool fifo8_is_empty(Fifo8 *fifo) -{ - return (fifo->num == 0); -} - -bool fifo8_is_full(Fifo8 *fifo) -{ - return (fifo->num == fifo->capacity); -} - -const VMStateDescription vmstate_fifo8 = { - .name = "Fifo8", - .version_id = 1, - .minimum_version_id = 1, - .minimum_version_id_old = 1, - .fields = (VMStateField[]) { - VMSTATE_VBUFFER_UINT32(data, Fifo8, 1, NULL, 0, capacity), - VMSTATE_UINT32(head, Fifo8), - VMSTATE_UINT32(num, Fifo8), - VMSTATE_END_OF_LIST() - } -}; |