/[gxemul]/trunk/src/include/memory.h
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Annotation of /trunk/src/include/memory.h

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Revision 4 - (hide annotations)
Mon Oct 8 16:18:00 2007 UTC (16 years, 6 months ago) by dpavlin
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File size: 6185 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.707 2005/04/27 16:37:33 debug Exp $
20050408	Some minor updates to the wdc. Linux now doesn't complain
		anymore if a disk is non-present.
20050409	Various minor fixes (a bintrans bug, and some other things).
		The wdc seems to work with Playstation2 emulation, but there
		is a _long_ annoying delay when disks are detected.
		Fixing a really important bintrans bug (when devices and RAM
		are mixed within 4KB pages), which was triggered with
		NetBSD/playstation2 kernels.
20050410	Adding a dummy dev_ps2_ether (just so that NetBSD doesn't
		complain as much during bootup).
		Symbols starting with '$' are now ignored.
		Renaming dev_ps2_ohci.c to dev_ohci.c, etc.
20050411	Moving the bintrans-cache-isolation check from cpu_mips.c to
		cpu_mips_coproc.c. (I thought this would give a speedup, but
		it's not noticable.)
		Better playstation2 sbus interrupt code.
		Skip ahead many ticks if the count register is read manually.
		(This increases the speed of delay-loops that simply read
		the count register.)
20050412	Updates to the playstation2 timer/interrupt code.
		Some other minor updates.
20050413	NetBSD/cobalt runs from a disk image :-) including userland;
		updating the documentation on how to install NetBSD/cobalt
		using NetBSD/pmax (!).
		Some minor bintrans updates (no real speed improvement) and
		other minor updates (playstation2 now uses the -o options).
20050414	Adding a dummy x86 (and AMD64) mode.
20050415	Adding some (32-bit and 16-bit) x86 instructions.
		Adding some initial support for non-SCSI, non-IDE floppy
		images. (The x86 mode can boot from these, more or less.)
		Moving the devices/ and include/ directories to src/devices/
		and src/include/, respectively.
20050416	Continuing on the x86 stuff. (Adding pc_bios.c and some simple
		support for software interrupts in 16-bit mode.)
20050417	Ripping out most of the x86 instruction decoding stuff, trying
		to rewrite it in a cleaner way.
		Disabling some of the least working CPU families in the
		configure script (sparc, x86, alpha, hppa), so that they are
		not enabled by default.
20050418	Trying to fix the bug which caused problems when turning on
		and off bintrans interactively, by flushing the bintrans cache
		whenever bintrans is manually (re)enabled.
20050419	Adding the 'lswi' ppc instruction.
		Minor updates to the x86 instruction decoding.
20050420	Renaming x86 register name indices from R_xx to X86_R_xx (this
		makes building on Tru64 nicer).
20050422	Adding a check for duplicate MIPS TLB entries on tlbwr/tlbwi.
20050427	Adding screenshots to guestoses.html.
		Some minor fixes and testing for the next release.

==============  RELEASE 0.3.2  ==============
1 dpavlin 4 #ifndef MEMORY_H
2     #define MEMORY_H
3    
4     /*
5     * Copyright (C) 2004-2005 Anders Gavare. All rights reserved.
6     *
7     * Redistribution and use in source and binary forms, with or without
8     * modification, are permitted provided that the following conditions are met:
9     *
10     * 1. Redistributions of source code must retain the above copyright
11     * notice, this list of conditions and the following disclaimer.
12     * 2. Redistributions in binary form must reproduce the above copyright
13     * notice, this list of conditions and the following disclaimer in the
14     * documentation and/or other materials provided with the distribution.
15     * 3. The name of the author may not be used to endorse or promote products
16     * derived from this software without specific prior written permission.
17     *
18     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28     * SUCH DAMAGE.
29     *
30     *
31     * $Id: memory.h,v 1.29 2005/02/26 16:53:32 debug Exp $
32     *
33     * Memory controller related functions.
34     */
35    
36     #include <sys/types.h>
37     #include <inttypes.h>
38    
39     #include "misc.h"
40    
41    
42     #define DEFAULT_RAM_IN_MB 32
43     #define MAX_DEVICES 24
44    
45     #define DEVICE_STATE_TYPE_INT 1
46     #define DEVICE_STATE_TYPE_UINT64_T 2
47    
48     struct cpu;
49     struct translation_page_entry;
50    
51     /* For bintrans: */
52     #define MAX_QUICK_JUMPS 8
53    
54     struct memory {
55     uint64_t physical_max;
56     void *pagetable;
57    
58     int n_mmapped_devices;
59     int last_accessed_device;
60     /* The following two might speed up things a little bit. */
61     /* (actually maxaddr is the addr after the last address) */
62     uint64_t mmap_dev_minaddr;
63     uint64_t mmap_dev_maxaddr;
64    
65     const char *dev_name[MAX_DEVICES];
66     uint64_t dev_baseaddr[MAX_DEVICES];
67     uint64_t dev_length[MAX_DEVICES];
68     int dev_flags[MAX_DEVICES];
69     void *dev_extra[MAX_DEVICES];
70     int (*dev_f[MAX_DEVICES])(struct cpu *,struct memory *,
71     uint64_t,unsigned char *,size_t,int,void *);
72     int (*dev_f_state[MAX_DEVICES])(struct cpu *,
73     struct memory *, void *extra, int wf, int nr,
74     int *type, char **namep, void **data, size_t *len);
75     unsigned char *dev_bintrans_data[MAX_DEVICES];
76    
77     #ifdef BINTRANS
78     uint64_t dev_bintrans_write_low[MAX_DEVICES];
79     uint64_t dev_bintrans_write_high[MAX_DEVICES];
80    
81     /*
82     * translation_code_chunk_space is a large chunk of (linear) memory
83     * where translated code chunks and translation_entrys are stored.
84     * When this is filled, translation is restart from scratch (by
85     * resetting translation_code_chunk_space_head to 0, and removing all
86     * translation entries).
87     *
88     * (Using a static memory region like this is somewhat inspired by
89     * the QEMU web pages,
90     * http://fabrice.bellard.free.fr/qemu/qemu-tech.html#SEC13)
91     */
92    
93     unsigned char *translation_code_chunk_space;
94     size_t translation_code_chunk_space_head;
95    
96     int bintrans_32bit_only;
97    
98     struct translation_page_entry **translation_page_entry_array;
99    
100     unsigned char *quick_jump_host_address[MAX_QUICK_JUMPS];
101     int quick_jump_page_offset[MAX_QUICK_JUMPS];
102     int n_quick_jumps;
103     int quick_jumps_index;
104     #endif
105     };
106    
107     #define BITS_PER_PAGETABLE 20
108     #define BITS_PER_MEMBLOCK 20
109     #define MAX_BITS 40
110    
111     #define MEM_READ 0
112     #define MEM_WRITE 1
113    
114    
115     #define CACHE_DATA 0
116     #define CACHE_INSTRUCTION 1
117     #define CACHE_NONE 2
118    
119     #define CACHE_FLAGS_MASK 0x3
120    
121     #define NO_EXCEPTIONS 8
122     #define PHYSICAL 16
123    
124    
125     /* memory.c: */
126     uint64_t memory_readmax64(struct cpu *cpu, unsigned char *buf, int len);
127     void memory_writemax64(struct cpu *cpu, unsigned char *buf, int len,
128     uint64_t data);
129    
130     void *zeroed_alloc(size_t s);
131    
132     struct memory *memory_new(uint64_t physical_max);
133    
134     int memory_points_to_string(struct cpu *cpu, struct memory *mem,
135     uint64_t addr, int min_string_length);
136     char *memory_conv_to_string(struct cpu *cpu, struct memory *mem,
137     uint64_t addr, char *buf, int bufsize);
138    
139     unsigned char *memory_paddr_to_hostaddr(struct memory *mem,
140     uint64_t paddr, int writeflag);
141    
142     /* memory_fast_v2h.c: */
143     unsigned char *fast_vaddr_to_hostaddr(struct cpu *cpu, uint64_t vaddr,
144     int writeflag);
145    
146     int translate_address_mmu3k(struct cpu *cpu, uint64_t vaddr,
147     uint64_t *return_addr, int flags);
148     int translate_address_mmu8k(struct cpu *cpu, uint64_t vaddr,
149     uint64_t *return_addr, int flags);
150     int translate_address_mmu10k(struct cpu *cpu, uint64_t vaddr,
151     uint64_t *return_addr, int flags);
152     int translate_address_mmu4100(struct cpu *cpu, uint64_t vaddr,
153     uint64_t *return_addr, int flags);
154     int translate_address_generic(struct cpu *cpu, uint64_t vaddr,
155     uint64_t *return_addr, int flags);
156    
157     #define FLAG_WRITEFLAG 1
158     #define FLAG_NOEXCEPTIONS 2
159     #define FLAG_INSTR 4
160    
161     int userland_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr,
162     unsigned char *data, size_t len, int writeflag, int cache);
163     #define MEMORY_ACCESS_FAILED 0
164     #define MEMORY_ACCESS_OK 1
165    
166     void memory_device_bintrans_access(struct cpu *, struct memory *mem,
167     void *extra, uint64_t *low, uint64_t *high);
168    
169     void memory_device_register_statefunction(
170     struct memory *mem, void *extra,
171     int (*dev_f_state)(struct cpu *,
172     struct memory *, void *extra, int wf, int nr,
173     int *type, char **namep, void **data, size_t *len));
174    
175     void memory_device_register(struct memory *mem, const char *,
176     uint64_t baseaddr, uint64_t len, int (*f)(struct cpu *,
177     struct memory *,uint64_t,unsigned char *,size_t,int,void *),
178     void *extra, int flags, unsigned char *bintrans_data);
179     void memory_device_remove(struct memory *mem, int i);
180    
181     #define MEM_DEFAULT 0
182     #define MEM_BINTRANS_OK 1
183     #define MEM_BINTRANS_WRITE_OK 2
184    
185    
186     #endif /* MEMORY_H */
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