diff options
Diffstat (limited to 'src/devices/cpu/vtlb.h')
-rw-r--r-- | src/devices/cpu/vtlb.h | 88 |
1 files changed, 0 insertions, 88 deletions
diff --git a/src/devices/cpu/vtlb.h b/src/devices/cpu/vtlb.h deleted file mode 100644 index f63a0ac50f6..00000000000 --- a/src/devices/cpu/vtlb.h +++ /dev/null @@ -1,88 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Aaron Giles -/*************************************************************************** - - vtlb.h - - Generic virtual TLB implementation. - -***************************************************************************/ - -#pragma once - -#ifndef __VTLB_H__ -#define __VTLB_H__ - - - -/*************************************************************************** - CONSTANTS -***************************************************************************/ - -#define VTLB_FLAGS_MASK 0xff - -#define VTLB_READ_ALLOWED 0x01 /* (1 << TRANSLATE_READ) */ -#define VTLB_WRITE_ALLOWED 0x02 /* (1 << TRANSLATE_WRITE) */ -#define VTLB_FETCH_ALLOWED 0x04 /* (1 << TRANSLATE_FETCH) */ -#define VTLB_FLAG_VALID 0x08 -#define VTLB_USER_READ_ALLOWED 0x10 /* (1 << TRANSLATE_READ_USER) */ -#define VTLB_USER_WRITE_ALLOWED 0x20 /* (1 << TRANSLATE_WRITE_USER) */ -#define VTLB_USER_FETCH_ALLOWED 0x40 /* (1 << TRANSLATE_FETCH_USER) */ -#define VTLB_FLAG_FIXED 0x80 - - - -/*************************************************************************** - TYPE DEFINITIONS -***************************************************************************/ - -/* represents an entry in the VTLB */ -typedef UINT32 vtlb_entry; - - -/* opaque structure describing VTLB state */ -struct vtlb_state; - - - -/*************************************************************************** - FUNCTION PROTOTYPES -***************************************************************************/ - - -/* ----- initialization/teardown ----- */ - -/* allocate a new VTLB for the given CPU */ -vtlb_state *vtlb_alloc(device_t *cpu, address_spacenum space, int fixed_entries, int dynamic_entries); - -/* free an allocated VTLB */ -void vtlb_free(vtlb_state *vtlb); - - -/* ----- filling ----- */ - -/* called by the CPU core in response to an unmapped access */ -int vtlb_fill(vtlb_state *vtlb, offs_t address, int intention); - -/* load a fixed VTLB entry */ -void vtlb_load(vtlb_state *vtlb, int entrynum, int numpages, offs_t address, vtlb_entry value); - -/* load a dynamic VTLB entry */ -void vtlb_dynload(vtlb_state *vtlb, UINT32 index, offs_t address, vtlb_entry value); - -/* ----- flushing ----- */ - -/* flush all knowledge from the dynamic part of the VTLB */ -void vtlb_flush_dynamic(vtlb_state *vtlb); - -/* flush knowledge of a particular address from the VTLB */ -void vtlb_flush_address(vtlb_state *vtlb, offs_t address); - - -/* ----- accessors ----- */ - -/* return a pointer to the base of the linear VTLB lookup table */ -const vtlb_entry *vtlb_table(vtlb_state *vtlb); - - -#endif /* __VTLB_H__ */ |