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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 | /* GXemul: $Id: m8820x_pte.h,v 1.2 2007/05/17 02:51:18 debug Exp $ */ |
| 2 | /* $OpenBSD: mmu.h,v 1.8 2006/05/21 20:55:43 miod Exp $ */ |
| 3 | |
| 4 | #ifndef M8820X_PTE_H |
| 5 | #define M8820X_PTE_H |
| 6 | |
| 7 | /* |
| 8 | * This file bears almost no resemblance to the original m68k file, |
| 9 | * so the following copyright notice is questionable, but we are |
| 10 | * nice people. |
| 11 | */ |
| 12 | |
| 13 | /* |
| 14 | * Copyright (c) 1988 University of Utah. |
| 15 | * Copyright (c) 1982, 1986, 1990, 1993 |
| 16 | * The Regents of the University of California. All rights reserved. |
| 17 | * |
| 18 | * This code is derived from software contributed to Berkeley by |
| 19 | * the Systems Programming Group of the University of Utah Computer |
| 20 | * Science Department. |
| 21 | * |
| 22 | * Redistribution and use in source and binary forms, with or without |
| 23 | * modification, are permitted provided that the following conditions |
| 24 | * are met: |
| 25 | * 1. Redistributions of source code must retain the above copyright |
| 26 | * notice, this list of conditions and the following disclaimer. |
| 27 | * 2. Redistributions in binary form must reproduce the above copyright |
| 28 | * notice, this list of conditions and the following disclaimer in the |
| 29 | * documentation and/or other materials provided with the distribution. |
| 30 | * 3. Neither the name of the University nor the names of its contributors |
| 31 | * may be used to endorse or promote products derived from this software |
| 32 | * without specific prior written permission. |
| 33 | * |
| 34 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 35 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 36 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 37 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 38 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 39 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 40 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 41 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 42 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 43 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 44 | * SUCH DAMAGE. |
| 45 | * |
| 46 | * from: Utah $Hdr: pte.h 1.13 92/01/20$ |
| 47 | * |
| 48 | * @(#)pte.h 8.1 (Berkeley) 6/10/93 |
| 49 | */ |
| 50 | |
| 51 | /* |
| 52 | * Parameters which determine the 'geometry' of the m88K page tables in memory. |
| 53 | */ |
| 54 | |
| 55 | #define SDT_BITS 10 /* M88K segment table size bits */ |
| 56 | #define PDT_BITS 10 /* M88K page table size bits */ |
| 57 | #define PG_BITS PAGE_SHIFT /* M88K hardware page size bits */ |
| 58 | |
| 59 | /* |
| 60 | * Common fields for APR, SDT and PTE |
| 61 | */ |
| 62 | |
| 63 | /* address frame */ |
| 64 | #define PG_FRAME 0xfffff000 |
| 65 | #define PG_SHIFT PG_BITS |
| 66 | #define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT) |
| 67 | |
| 68 | /* cache control bits */ |
| 69 | #define CACHE_DFL 0x00000000 |
| 70 | #define CACHE_INH 0x00000040 /* cache inhibit */ |
| 71 | #define CACHE_GLOBAL 0x00000080 /* global scope */ |
| 72 | #define CACHE_WT 0x00000200 /* write through */ |
| 73 | |
| 74 | #define CACHE_MASK (CACHE_INH | CACHE_GLOBAL | CACHE_WT) |
| 75 | |
| 76 | /* |
| 77 | * Area descriptors |
| 78 | */ |
| 79 | |
| 80 | typedef u_int32_t apr_t; |
| 81 | |
| 82 | #define APR_V 0x00000001 /* valid bit */ |
| 83 | |
| 84 | /* |
| 85 | * 88200 PATC (TLB) |
| 86 | */ |
| 87 | |
| 88 | #define PATC_ENTRIES 56 |
| 89 | |
| 90 | /* |
| 91 | * BATC entries |
| 92 | */ |
| 93 | |
| 94 | #define BATC_V 0x00000001 |
| 95 | #define BATC_PROT 0x00000002 |
| 96 | #define BATC_INH 0x00000004 |
| 97 | #define BATC_GLOBAL 0x00000008 |
| 98 | #define BATC_WT 0x00000010 |
| 99 | #define BATC_SO 0x00000020 |
| 100 | |
| 101 | |
| 102 | /* |
| 103 | * Segment table entries |
| 104 | */ |
| 105 | |
| 106 | typedef u_int32_t sdt_entry_t; |
| 107 | |
| 108 | #define SG_V 0x00000001 |
| 109 | #define SG_NV 0x00000000 |
| 110 | #define SG_PROT 0x00000004 |
| 111 | #define SG_RO 0x00000004 |
| 112 | #define SG_RW 0x00000000 |
| 113 | #define SG_SO 0x00000100 |
| 114 | |
| 115 | #define SDT_VALID(sdt) (*(sdt) & SG_V) |
| 116 | #define SDT_SUP(sdt) (*(sdt) & SG_SO) |
| 117 | #define SDT_WP(sdt) (*(sdt) & SG_PROT) |
| 118 | |
| 119 | /* |
| 120 | * Page table entries |
| 121 | */ |
| 122 | |
| 123 | typedef u_int32_t pt_entry_t; |
| 124 | |
| 125 | #define PG_V 0x00000001 |
| 126 | #define PG_NV 0x00000000 |
| 127 | #define PG_PROT 0x00000004 |
| 128 | #define PG_U 0x00000008 |
| 129 | #define PG_M 0x00000010 |
| 130 | #define PG_M_U 0x00000018 |
| 131 | #define PG_RO 0x00000004 |
| 132 | #define PG_RW 0x00000000 |
| 133 | #define PG_SO 0x00000100 |
| 134 | #define PG_W 0x00000020 /* XXX unused but reserved field */ |
| 135 | #define PG_U0 0x00000400 /* U0 bit for M88110 */ |
| 136 | #define PG_U1 0x00000800 /* U1 bit for M88110 */ |
| 137 | |
| 138 | #define PDT_VALID(pte) (*(pte) & PG_V) |
| 139 | #define PDT_SUP(pte) (*(pte) & PG_SO) |
| 140 | #define PDT_WP(pte) (*(pte) & PG_PROT) |
| 141 | |
| 142 | /* |
| 143 | * Indirect descriptors (mc81110) |
| 144 | */ |
| 145 | |
| 146 | typedef u_int32_t pt_ind_entry_t; |
| 147 | |
| 148 | /* validity bits */ |
| 149 | #define IND_V 0x00000001 |
| 150 | #define IND_NV 0x00000000 |
| 151 | #define IND_MASKED 0x00000002 |
| 152 | #define IND_UNMASKED 0x00000003 |
| 153 | #define IND_MASK 0x00000003 |
| 154 | |
| 155 | #define IND_FRAME 0xfffffffc |
| 156 | #define IND_SHIFT 2 |
| 157 | |
| 158 | #define IND_PDA(x) ((x) & IND_FRAME >> IND_SHIFT) |
| 159 | |
| 160 | /* |
| 161 | * Number of entries in a page table. |
| 162 | */ |
| 163 | |
| 164 | #define SDT_ENTRIES (1<<(SDT_BITS)) |
| 165 | #define PDT_ENTRIES (1<<(PDT_BITS)) |
| 166 | |
| 167 | /* |
| 168 | * Size in bytes of a single page table. |
| 169 | */ |
| 170 | |
| 171 | #define SDT_SIZE (sizeof(sdt_entry_t) * SDT_ENTRIES) |
| 172 | #define PDT_SIZE (sizeof(pt_entry_t) * PDT_ENTRIES) |
| 173 | |
| 174 | /* |
| 175 | * Shifts and masks |
| 176 | */ |
| 177 | |
| 178 | #define SDT_SHIFT (PDT_BITS + PG_BITS) |
| 179 | #define PDT_SHIFT (PG_BITS) |
| 180 | |
| 181 | #define SDT_MASK (((1 << SDT_BITS) - 1) << SDT_SHIFT) |
| 182 | #define PDT_MASK (((1 << PDT_BITS) - 1) << PDT_SHIFT) |
| 183 | |
| 184 | #define SDTIDX(va) (((va) & SDT_MASK) >> SDT_SHIFT) |
| 185 | #define PDTIDX(va) (((va) & PDT_MASK) >> PDT_SHIFT) |
| 186 | |
| 187 | /* |
| 188 | * Parameters and macros for BATC |
| 189 | */ |
| 190 | |
| 191 | /* number of bits to BATC shift (log2(BATC_BLKBYTES)) */ |
| 192 | #define BATC_BLKSHIFT 19 |
| 193 | /* 'block' size of a BATC entry mapping */ |
| 194 | #define BATC_BLKBYTES (1 << BATC_BLKSHIFT) |
| 195 | /* BATC block mask */ |
| 196 | #define BATC_BLKMASK (BATC_BLKBYTES-1) |
| 197 | /* number of BATC entries */ |
| 198 | #define BATC_MAX 8 |
| 199 | |
| 200 | /* physical and logical block address */ |
| 201 | #define BATC_PSHIFT 6 |
| 202 | #define BATC_VSHIFT (BATC_PSHIFT + (32 - BATC_BLKSHIFT)) |
| 203 | |
| 204 | #define BATC_BLK_ALIGNED(x) ((x & BATC_BLKMASK) == 0) |
| 205 | |
| 206 | #define M88K_BTOBLK(x) (x >> BATC_BLKSHIFT) |
| 207 | |
| 208 | #if 0 |
| 209 | static pt_entry_t invalidate_pte(pt_entry_t *); |
| 210 | static __inline__ pt_entry_t |
| 211 | invalidate_pte(pt_entry_t *pte) |
| 212 | { |
| 213 | pt_entry_t oldpte; |
| 214 | |
| 215 | oldpte = PG_NV; |
| 216 | __asm__ __volatile__ |
| 217 | ("xmem %0, %2, r0" : "=r"(oldpte) : "0"(oldpte), "r"(pte)); |
| 218 | __asm__ __volatile__ ("tb1 0, r0, 0"); |
| 219 | return oldpte; |
| 220 | } |
| 221 | #endif |
| 222 | |
| 223 | #endif /* M8820X_PTE_H */ |
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