Parent Directory | Revision Log
++ trunk/HISTORY (local) $Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $ 20070501 Continuing a little on m88k disassembly (control registers, more instructions). Adding a dummy mvme88k machine mode. 20070502 Re-adding MIPS load/store alignment exceptions. 20070503 Implementing more of the M88K disassembly code. 20070504 Adding disassembly of some more M88K load/store instructions. Implementing some relatively simple M88K instructions (br.n, xor[.u] imm, and[.u] imm). 20070505 Implementing M88K three-register and, or, xor, and jmp[.n], bsr[.n] including function call trace stuff. Applying a patch from Bruce M. Simpson which implements the SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in the yamon PROM emulation. 20070506 Implementing M88K bb0[.n] and bb1[.n], and skeletons for ldcr and stcr (although no control regs are implemented yet). 20070509 Found and fixed the bug which caused Linux for QEMU_MIPS to stop working in 0.4.5.1: It was a faulty change to the MIPS 'sc' and 'scd' instructions I made while going through gcc -W warnings on 20070428. 20070510 Updating the Linux/QEMU_MIPS section in guestoses.html to use mips-test-0.2.tar.gz instead of 0.1. A big thank you to Miod Vallat for sending me M88K manuals. Implementing more M88K instructions (addu, subu, div[u], mulu, ext[u], clr, set, cmp). 20070511 Fixing bugs in the M88K "and" and "and.u" instructions (found by comparing against the manual). Implementing more M88K instructions (mask[.u], mak, bcnd (auto- generated)) and some more control register details. Cleanup: Removing the experimental AVR emulation mode and corresponding devices; AVR emulation wasn't really meaningful. Implementing autogeneration of most M88K loads/stores. The rectangle drawing demo (with -O0) for M88K runs :-) Beginning on M88K exception handling. More M88K instructions: tb0, tb1, rte, sub, jsr[.n]. Adding some skeleton MVME PROM ("BUG") emulation. 20070512 Fixing a bug in the M88K cmp instruction. Adding the M88K lda (scaled register) instruction. Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores. Removing the unused tick_hz stuff from the machine struct. Implementing the M88K xmem instruction. OpenBSD/mvme88k gets far enough to display the Copyright banner :-) Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1. Adding a dev_mvme187, for MVME187-specific devices/registers. OpenBSD/mvme88k prints more boot messages. :) 20070515 Continuing on MVME187 emulation (adding more devices, beginning on the CMMUs, etc). Adding the M88K and.c, xor.c, and or.c instructions, and making sure that mul, div, etc cause exceptions if executed when SFD1 is disabled. 20070517 Continuing on M88K and MVME187 emulation in general; moving the CMMU registers to the CPU struct, separating dev_pcc2 from dev_mvme187, and beginning on memory_m88k.c (BATC and PATC). Fixing a bug in 64-bit (32-bit pairs) M88K fast stores. Implementing the clock part of dev_mk48txx. Implementing the M88K fstcr and xcr instructions. Implementing m88k_cpu_tlbdump(). Beginning on the implementation of a separate address space for M88K .usr loads/stores. 20070520 Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK Dnard, and Zaurus machine modes. Experimenting with dyntrans to_be_translated read-ahead. It seems to give a very small performance increase for MIPS emulation, but a large performance degradation for SuperH. Hm. 20070522 Disabling correct SuperH ITLB emulation; it does not seem to be necessary in order to let SH4 guest OSes run, and it slows down userspace code. Implementing "samepage" branches for SuperH emulation, and some other minor speed hacks. 20070525 Continuing on M88K memory-related stuff: exceptions, memory transaction register contents, etc. Implementing the M88K subu.ci instruction. Removing the non-working (skeleton) Iyonix machine mode. OpenBSD/mvme88k reaches userland :-), starts executing /sbin/init's instructions, and issues a few syscalls, before crashing. 20070526 Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects the correct time-of-day. Implementing a generic IRQ controller for the test machines (dev_irqc), similar to a proposed patch from Petr Stepan. Experimenting some more with translation read-ahead. Adding an "expect" script for automated OpenBSD/landisk install regression/performance tests. 20070527 Adding a dummy mmEye (SH3) machine mode skeleton. FINALLY found the strange M88K bug I have been hunting: I had not emulated the SNIP value for exceptions occurring in branch delay slots correctly. Implementing correct exceptions for 64-bit M88K loads/stores. Address to symbol lookups are now disabled when M88K is running in usermode (because usermode addresses don't have anything to do with supervisor addresses). 20070531 Removing the mmEye machine mode skeleton. 20070604 Some minor code cleanup. 20070605 Moving src/useremul.c into a subdir (src/useremul/), and cleaning up some more legacy constructs. Adding -Wstrict-aliasing and -fstrict-aliasing detection to the configure script. 20070606 Adding a check for broken GCC on Solaris to the configure script. (GCC 3.4.3 on Solaris cannot handle static variables which are initialized to 0 or NULL. :-/) Removing the old (non-working) ARC emulation modes: NEC RD94, R94, R96, and R98, and the last traces of Olivetti M700 and Deskstation Tyne. Removing the non-working skeleton WDSC device (dev_wdsc). 20070607 Thinking about how to use the host's cc + ld at runtime to generate native code. (See experiments/native_cc_ld_test.i for an example.) 20070608 Adding a program counter sampling timer, which could be useful for native code generation experiments. The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR should always be set, to allow a 5000/200 PROM to boot. 20070609 Moving out breakpoint details from the machine struct into a helper struct, and removing the limit on max nr of breakpoints. 20070610 Moving out tick functions into a helper struct as well (which also gets rid of the max limit). 20070612 FINALLY figured out why Debian/DECstation stopped working when translation read-ahead was enabled: in src/memory_rw.c, the call to invalidate_code_translation was made also if the memory access was an instruction load (if the page was mapped as writable); it shouldn't be called in that case. 20070613 Implementing some more MIPS32/64 revision 2 instructions: di, ei, ext, dext, dextm, dextu, and ins. 20070614 Implementing an instruction combination for the NetBSD/arm idle loop (making the host not use any cpu if NetBSD/arm inside the emulator is not using any cpu). Increasing the nr of ARM VPH entries from 128 to 384. 20070615 Removing the ENABLE_arch stuff from the configure script, so that all included architectures are included in both release and development builds. Moving memory related helper functions from misc.c to memory.c. Adding preliminary instructions for netbooting NetBSD/pmppc to guestoses.html; it doesn't work yet, there are weird timeouts. Beginning a total rewrite of the userland emulation modes (removing all emulation modes, beginning from scratch with NetBSD/MIPS and FreeBSD/Alpha only). 20070616 After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was only cleared for the last segment when transmitting, not all segments), NetBSD/pmppc boots with root-on-nfs without the timeouts. Updating guestoses.html. Removing the skeleton PSP (Playstation Portable) mode. Moving X11-related stuff in the machine struct into a helper struct. Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION macro (which prints a meaningful error message). Adding a COMMENT to each machine and device (for automagic .index comment generation). Doing regression testing for the next release. ============== RELEASE 0.4.6 ==============
1 | #ifndef MEMORY_H |
2 | #define MEMORY_H |
3 | |
4 | /* |
5 | * Copyright (C) 2004-2007 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 1.57 2007/06/14 16:13:30 debug Exp $ |
32 | * |
33 | * Memory 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 | |
44 | struct cpu; |
45 | |
46 | |
47 | /* |
48 | * Memory mapped device |
49 | */ |
50 | struct memory_device { |
51 | uint64_t baseaddr; |
52 | uint64_t endaddr; /* NOTE: after the last byte! */ |
53 | uint64_t length; |
54 | int flags; |
55 | |
56 | const char *name; |
57 | |
58 | int (*f)(struct cpu *,struct memory *, |
59 | uint64_t,unsigned char *,size_t,int,void *); |
60 | void *extra; |
61 | |
62 | unsigned char *dyntrans_data; |
63 | |
64 | uint64_t dyntrans_write_low; |
65 | uint64_t dyntrans_write_high; |
66 | }; |
67 | |
68 | |
69 | /* |
70 | * Memory |
71 | * ------ |
72 | * |
73 | * This struct defines a memory object. Most machines only use one memory |
74 | * object (the main memory), but if necessary, multiple memories can be |
75 | * used. |
76 | */ |
77 | struct memory { |
78 | uint64_t physical_max; |
79 | void *pagetable; |
80 | |
81 | int dev_dyntrans_alignment; |
82 | |
83 | int n_mmapped_devices; |
84 | int last_accessed_device; |
85 | /* The following two might speed up things a little bit. */ |
86 | /* (actually maxaddr is the addr after the last address) */ |
87 | uint64_t mmap_dev_minaddr; |
88 | uint64_t mmap_dev_maxaddr; |
89 | |
90 | struct memory_device *devices; |
91 | }; |
92 | |
93 | #define BITS_PER_PAGETABLE 20 |
94 | #define BITS_PER_MEMBLOCK 20 |
95 | #define MAX_BITS 40 |
96 | |
97 | |
98 | /* memory.c: */ |
99 | #define MEM_PCI_LITTLE_ENDIAN 128 |
100 | uint64_t memory_readmax64(struct cpu *cpu, unsigned char *buf, int len); |
101 | void memory_writemax64(struct cpu *cpu, unsigned char *buf, int len, |
102 | uint64_t data); |
103 | |
104 | void *zeroed_alloc(size_t s); |
105 | |
106 | struct memory *memory_new(uint64_t physical_max, int arch); |
107 | |
108 | int memory_points_to_string(struct cpu *cpu, struct memory *mem, |
109 | uint64_t addr, int min_string_length); |
110 | char *memory_conv_to_string(struct cpu *cpu, struct memory *mem, |
111 | uint64_t addr, char *buf, int bufsize); |
112 | |
113 | unsigned char *memory_paddr_to_hostaddr(struct memory *mem, |
114 | uint64_t paddr, int writeflag); |
115 | |
116 | |
117 | /* Writeflag: */ |
118 | #define MEM_READ 0 |
119 | #define MEM_WRITE 1 |
120 | #define MEM_DOWNGRADE 128 |
121 | |
122 | /* Misc. flags: */ |
123 | #define CACHE_DATA 0 |
124 | #define CACHE_INSTRUCTION 1 |
125 | #define CACHE_NONE 2 |
126 | #define CACHE_FLAGS_MASK 0x3 |
127 | #define NO_EXCEPTIONS 16 |
128 | #define PHYSICAL 32 |
129 | #define MEMORY_USER_ACCESS 64 /* for ARM and M88K */ |
130 | |
131 | /* Dyntrans Memory flags: */ |
132 | #define DM_DEFAULT 0 |
133 | #define DM_DYNTRANS_OK 1 |
134 | #define DM_DYNTRANS_WRITE_OK 2 |
135 | #define DM_READS_HAVE_NO_SIDE_EFFECTS 4 |
136 | #define DM_EMULATED_RAM 8 |
137 | |
138 | #define FLAG_WRITEFLAG 1 |
139 | #define FLAG_NOEXCEPTIONS 2 |
140 | #define FLAG_INSTR 4 |
141 | |
142 | int userland_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr, |
143 | unsigned char *data, size_t len, int writeflag, int cache); |
144 | #define MEMORY_ACCESS_FAILED 0 |
145 | #define MEMORY_ACCESS_OK 1 |
146 | #define MEMORY_ACCESS_OK_WRITE 2 |
147 | #define MEMORY_NOT_FULL_PAGE 256 |
148 | |
149 | void memory_device_dyntrans_access(struct cpu *, struct memory *mem, |
150 | void *extra, uint64_t *low, uint64_t *high); |
151 | |
152 | #define DEVICE_ACCESS(x) int dev_ ## x ## _access(struct cpu *cpu, \ |
153 | struct memory *mem, uint64_t relative_addr, unsigned char *data, \ |
154 | size_t len, int writeflag, void *extra) |
155 | |
156 | void memory_device_update_data(struct memory *mem, void *extra, |
157 | unsigned char *data); |
158 | |
159 | void memory_device_register(struct memory *mem, const char *, |
160 | uint64_t baseaddr, uint64_t len, int (*f)(struct cpu *, |
161 | struct memory *,uint64_t,unsigned char *,size_t,int,void *), |
162 | void *extra, int flags, unsigned char *dyntrans_data); |
163 | void memory_device_remove(struct memory *mem, int i); |
164 | |
165 | uint64_t memory_checksum(struct memory *mem); |
166 | |
167 | void dump_mem_string(struct cpu *cpu, uint64_t addr); |
168 | void store_string(struct cpu *cpu, uint64_t addr, char *s); |
169 | int store_64bit_word(struct cpu *cpu, uint64_t addr, uint64_t data64); |
170 | int store_32bit_word(struct cpu *cpu, uint64_t addr, uint64_t data32); |
171 | int store_16bit_word(struct cpu *cpu, uint64_t addr, uint64_t data16); |
172 | void store_byte(struct cpu *cpu, uint64_t addr, uint8_t data); |
173 | void store_64bit_word_in_host(struct cpu *cpu, unsigned char *data, |
174 | uint64_t data32); |
175 | void store_32bit_word_in_host(struct cpu *cpu, unsigned char *data, |
176 | uint64_t data32); |
177 | void store_16bit_word_in_host(struct cpu *cpu, unsigned char *data, |
178 | uint16_t data16); |
179 | uint64_t load_64bit_word(struct cpu *cpu, uint64_t addr); |
180 | uint32_t load_32bit_word(struct cpu *cpu, uint64_t addr); |
181 | uint16_t load_16bit_word(struct cpu *cpu, uint64_t addr); |
182 | void store_buf(struct cpu *cpu, uint64_t addr, char *s, size_t len); |
183 | void add_environment_string(struct cpu *cpu, char *s, uint64_t *addr); |
184 | void add_environment_string_dual(struct cpu *cpu, |
185 | uint64_t *ptrp, uint64_t *addrp, char *s1, char *s2); |
186 | void store_pointer_and_advance(struct cpu *cpu, uint64_t *addrp, |
187 | uint64_t data, int flag64); |
188 | |
189 | void memory_warn_about_unimplemented_addr(struct cpu *cpu, struct memory *mem, |
190 | int writeflag, uint64_t paddr, uint8_t *data, size_t len); |
191 | |
192 | |
193 | #endif /* MEMORY_H */ |
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