/[gxemul]/trunk/src/include/cpu_m88k.h
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/src/include/cpu_m88k.h

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Revision 40 - (show annotations)
Mon Oct 8 16:22:11 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 3477 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1539 2007/05/01 04:03:51 debug Exp $
20070415	Landisk PCLOCK should be 33.33 MHz, not 50 MHz. (This makes
		the clock run at correct speed.)
		FINALLY found and fixed the bug which caused OpenBSD/landisk
		to randomly bug out: an &-sign was missing in the special case
		handling of FPSCR in the 'LDS.L @Rm+,FPSCR' instruction.
		Adding similar special case handling for 'LDC.L @Rm+,SR'
		(calling sh_update_sr() instead of just loading).
		Implementing the 'FCNVSD FPUL,DRn' and 'FCNVDS DRm,FPUL'
		SuperH instructions.
		The 'LDC Rm,SR' instruction now immediately breaks out of the
		dyntrans loop if an interrupt is to be triggered.
20070416	In memory_rw.c, if mapping a page as writable, make sure to
		invalidate code translations even if the data access was a
		read.
		Minor SuperH updates.
20070418	Removing the dummy M68K emulation mode.
		Minor SH update (turning unnecessary sts_mach_rn, sts_macl_rn,
		and sts_pr_rn instruction handlers into mov_rm_rn).
20070419	Beginning to add a skeleton for an M88K mode: Adding a hack to
		allow OpenBSD/m88k a.out binaries to be loaded, and disassembly
		of a few simple 88K instructions.
		Commenting out the 'LDC Rm,SR' fix from a few days ago, because
		it made Linux/dreamcast bug out.
		Adding a hack to dev_sh4.c (an extra translation cache
		invalidation), which allows OpenBSD/landisk to boot ok after
		an install. Upgrading the Landisk machine mode to stable,
		updating documentation, etc.
20070420	Experimenting with adding a PCI controller (pcic) to dev_sh4.
		Adding a dummy Realtek 8139C+ skeleton device (dev_rtl8139c).
		Implementing the first M88K instructions (br, or[.u] imm), and
		adding disassembly of some more instructions.
20070421	Continuing a little on dev_rtl8139c.
20070422	Implementing the 9346 EEPROM "read" command for dev_rtl8139c.
		Finally found and fixed an old bug in the log n symbol search
		(it sometimes missed symbols). Debug trace (-i, -t etc) should
		now show more symbols. :-)
20070423	Continuing a little on M88K disassembly.
20070428	Fixing a memset arg order bug in src/net/net.c (thanks to
		Nigel Horne for noticing the bug).
		Applying parts of a patch from Carl van Schaik to clear out
		bottom bits of MIPS addresses more correctly, when using large
		page sizes, and doing some other minor cleanup/refactoring.
		Fixing a couple of warnings given by gcc with the -W option (a
		few more warnings than just plain -Wall).
		Reducing SuperH dyntrans physical address space from 64-bit to
		32-bit (since SH5/SH64 isn't imlemented yet anyway).
		Adding address-to-symbol annotation to a few more instructions
		in the SuperH instruction trace output.
		Beginning regression testing for the next release.
		Reverting the value of SCIF_DELAYED_TX_VALUE from 1 to 2,
		because OpenBSD/landisk may otherwise hang randomly.
20070429	The ugly hack/workaround to get OpenBSD/landisk booting without
		crashing does NOT work anymore (with the April 21 snapshot
		of OpenBSD/landisk). Strangely enough, removing the hack
		completely causes OpenBSD/landisk to work (!).
		More regression testing (re-testing everything SuperH-related,
		and some other things).
		Cobalt interrupts were actually broken; fixing by commenting
		out the DEC21143s in the Cobalt machine.
20070430	More regression testing.
20070501	Updating the OpenBSD/landisk install instructions to use
		4.1 instead of the current snapshot.
		GAAAH! OpenBSD/landisk 4.1 _needs_ the ugly hack/workaround;
		reintroducing it again. (The 4.1 kernel is actually from
		2007-03-11.)
		Simplifying the NetBSD/evbarm install instructions a bit.
		More regression testing.

==============  RELEASE 0.4.5.1  ==============


1 #ifndef CPU_M88K_H
2 #define CPU_M88K_H
3
4 /*
5 * Copyright (C) 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: cpu_m88k.h,v 1.4 2007/04/28 00:12:03 debug Exp $
32 */
33
34 #include "misc.h"
35 #include "interrupt.h"
36
37 struct cpu_family;
38
39 /* M88K CPU types: */
40 struct m88k_cpu_type_def {
41 char *name;
42 int type;
43 };
44
45 #define M88K_CPU_TYPE_DEFS { \
46 { "88100", 88100 }, \
47 { "88110", 88110 }, \
48 { NULL, 0 } \
49 }
50
51
52 #define M88K_N_IC_ARGS 3
53 #define M88K_INSTR_ALIGNMENT_SHIFT 2
54 #define M88K_IC_ENTRIES_SHIFT 10
55 #define M88K_IC_ENTRIES_PER_PAGE (1 << M88K_IC_ENTRIES_SHIFT)
56 #define M88K_PC_TO_IC_ENTRY(a) (((a)>>M88K_INSTR_ALIGNMENT_SHIFT) \
57 & (M88K_IC_ENTRIES_PER_PAGE-1))
58 #define M88K_ADDR_TO_PAGENR(a) ((a) >> (M88K_IC_ENTRIES_SHIFT \
59 + M88K_INSTR_ALIGNMENT_SHIFT))
60
61 DYNTRANS_MISC_DECLARATIONS(m88k,M88K,uint32_t)
62
63 #define M88K_MAX_VPH_TLB_ENTRIES 128
64
65
66 #define N_M88K_REGS 32
67
68 /* Register r0 is always zero. */
69 #define M88K_ZERO_REG 0
70
71 struct m88k_cpu {
72 struct m88k_cpu_type_def cpu_type;
73
74 /* General-Purpose Registers: */
75 uint32_t r[N_M88K_REGS];
76
77 /* Destination for non-nop instructions with r0 as dest. reg.: */
78 uint32_t zero;
79
80 int irq_asserted;
81
82
83 /*
84 * Instruction translation cache, and 32-bit virtual -> physical ->
85 * host address translation:
86 */
87 DYNTRANS_ITC(m88k)
88 VPH_TLBS(m88k,M88K)
89 VPH32(m88k,M88K,uint32_t,uint8_t)
90 };
91
92
93 /* cpu_m88k.c: */
94 int m88k_cpu_instruction_has_delayslot(struct cpu *cpu, unsigned char *ib);
95 int m88k_run_instr(struct cpu *cpu);
96 void m88k_update_translation_table(struct cpu *cpu, uint64_t vaddr_page,
97 unsigned char *host_page, int writeflag, uint64_t paddr_page);
98 void m88k_invalidate_translation_caches(struct cpu *cpu, uint64_t, int);
99 void m88k_invalidate_code_translation(struct cpu *cpu, uint64_t, int);
100 int m88k_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr,
101 unsigned char *data, size_t len, int writeflag, int cache_flags);
102 int m88k_cpu_family_init(struct cpu_family *);
103
104 #endif /* CPU_M88K_H */

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