fork of PCE focusing on macplus, supporting DaynaPort SCSI network emulation
devices: Add function mem_get_ptr()
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+22
-1
src/devices/memory.c
+22
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src/devices/memory.c
···
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/*****************************************************************************
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* File name: src/devices/memory.c *
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* Created: 2000-04-23 by Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2000-2011 Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2000-2013 Hampa Hug <hampa@hampa.ch> *
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*****************************************************************************/
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/*****************************************************************************
···
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mem_blk_t *mem_get_blk (memory_t *mem, unsigned long addr)
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{
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return (mem_get_blk_inline (mem, addr, 0));
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}
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void *mem_get_ptr (memory_t *mem, unsigned long addr, unsigned long size)
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{
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mem_blk_t *blk;
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if ((blk = mem_get_blk (mem, addr)) == NULL) {
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return (NULL);
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}
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if (blk->data == NULL) {
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return (NULL);
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}
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addr -= blk->addr1;
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if ((blk->size - addr) < size) {
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return (NULL);
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}
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return (blk->data + addr);
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}
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unsigned char mem_get_uint8 (memory_t *mem, unsigned long addr)
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-1
src/devices/memory.h
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src/devices/memory.h
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/*****************************************************************************
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* File name: src/devices/memory.h *
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* Created: 2000-04-23 by Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2000-2012 Hampa Hug <hampa@hampa.ch> *
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* Copyright: (C) 2000-2013 Hampa Hug <hampa@hampa.ch> *
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*****************************************************************************/
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/*****************************************************************************
···
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* @return blk The memory block or NULL
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*****************************************************************************/
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mem_blk_t *mem_get_blk (memory_t *mem, unsigned long addr);
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/*!***************************************************************************
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* @short Get a pointer to memory
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* @param mem The memory structure
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* @param addr The pointer address
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* @param size The requested block size
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* @return A pointer to a block of memory at address addr and of size size
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*****************************************************************************/
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void *mem_get_ptr (memory_t *mem, unsigned long addr, unsigned long size);
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unsigned char mem_get_uint8 (memory_t *mem, unsigned long addr);
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unsigned short mem_get_uint16_be (memory_t *mem, unsigned long addr);