/[gxemul]/trunk/src/include/cpu_transputer.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_transputer.h

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Revision 28 - (show annotations)
Mon Oct 8 16:20:26 2007 UTC (13 years, 1 month ago) by dpavlin
File MIME type: text/plain
File size: 5698 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1298 2006/07/22 11:27:46 debug Exp $
20060626	Continuing on SPARC emulation (beginning on the 'save'
		instruction, register windows, etc).
20060629	Planning statistics gathering (new -s command line option),
		and renaming speed_tricks to allow_instruction_combinations.
20060630	Some minor manual page updates.
		Various cleanups.
		Implementing the -s command line option.
20060701	FINALLY found the bug which prevented Linux and Ultrix from
		running without the ugly hack in the R2000/R3000 cache isol
		code; it was the phystranslation hint array which was buggy.
		Removing the phystranslation hint code completely, for now.
20060702	Minor dyntrans cleanups; invalidation of physpages now only
		invalidate those parts of a page that have actually been
		translated. (32 parts per page.)
		Some MIPS non-R3000 speed fixes.
		Experimenting with MIPS instruction combination for some
		addiu+bne+sw loops, and sw+sw+sw.
		Adding support (again) for larger-than-4KB pages in MIPS tlbw*.
		Continuing on SPARC emulation: adding load/store instructions.
20060704	Fixing a virtual vs physical page shift bug in the new tlbw*
		implementation. Problem noticed by Jakub Jermar. (Many thanks.)
		Moving rfe and eret to cpu_mips_instr.c, since that is the
		only place that uses them nowadays.
20060705	Removing the BSD license from the "testmachine" include files,
		placing them in the public domain instead; this enables the
		testmachine stuff to be used from projects which are
		incompatible with the BSD license for some reason.
20060707	Adding instruction combinations for the R2000/R3000 L1
		I-cache invalidation code used by NetBSD/pmax 3.0, lui+addiu,
		various branches followed by addiu or nop, and jr ra followed
		by addiu. The time it takes to perform a full NetBSD/pmax R3000
		install on the laptop has dropped from 573 seconds to 539. :-)
20060708	Adding a framebuffer controller device (dev_fbctrl), which so
		far can be used to change the fb resolution during runtime, but
		in the future will also be useful for accelerated block fill/
		copy, and possibly also simplified character output.
		Adding an instruction combination for NetBSD/pmax' strlen.
20060709	Minor fixes: reading raw files in src/file.c wasn't memblock
		aligned, removing buggy multi_sw MIPS instruction combination,
		etc.
20060711	Adding a machine_qemu.c, which contains a "qemu_mips" machine.
		(It mimics QEMU's MIPS machine mode, so that a test kernel
		made for QEMU_MIPS also can run in GXemul... at least to some
		extent.)  Adding a short section about how to run this mode to
		doc/guestoses.html.
20060714	Misc. minor code cleanups.
20060715	Applying a patch which adds getchar() to promemul/yamon.c
		(from Oleksandr Tymoshenko).
		Adding yamon.h from NetBSD, and rewriting yamon.c to use it
		(instead of ugly hardcoded numbers) + some cleanup.
20060716	Found and fixed the bug which broke single-stepping of 64-bit
		programs between 0.4.0 and 0.4.0.1 (caused by too quick
		refactoring and no testing). Hopefully this fix will not
		break too many other things.
20060718	Continuing on the 8253 PIT; it now works with Linux/QEMU_MIPS.
		Re-adding the sw+sw+sw instr comb (the problem was that I had
		ignored endian issues); however, it doesn't seem to give any
		big performance gain.
20060720	Adding a dummy Transputer mode (T414, T800 etc) skeleton (only
		the 'j' and 'ldc' instructions are implemented so far). :-}
20060721	Adding gtreg.h from NetBSD, updating dev_gt.c to use it, plus
		misc. other updates to get Linux 2.6 for evbmips/malta working
		(thanks to Alec Voropay for the details).
		FINALLY found and fixed the bug which made tlbw* for non-R3000
		buggy; it was a reference count problem in the dyntrans core.
20060722	Testing stuff; things seem stable enough for a new release.

==============  RELEASE 0.4.1  ==============


1 #ifndef CPU_TRANSPUTER_H
2 #define CPU_TRANSPUTER_H
3
4 /*
5 * Copyright (C) 2006 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_transputer.h,v 1.1 2006/07/20 21:53:00 debug Exp $
32 */
33
34 #include "misc.h"
35
36
37 struct cpu_family;
38
39
40 /* TRANSPUTER CPU types: */
41 struct transputer_cpu_type_def {
42 char *name;
43 int bits; /* 16 or 32 */
44 int onchip_ram; /* 2048 or 4096 bytes */
45 int features;
46 };
47
48 /*
49 * Features of various transputer processors according to
50 * http://www.enlight.ru/docs/cpu/t-puters/talp/app_g.txt:
51 */
52
53 #define T_T4_FP 1 /* T4 floating point */
54 #define T_T8_FP 2 /* T8 floating point */
55 #define T_2D_BLOCK 4 /* 2D Block Move instruction */
56 #define T_FMUL 8 /* FMUL instruction */
57 #define T_DUP 16 /* DUP instruction */
58 #define T_WSUBDB 32 /* WSUBDB instruction */
59 #define T_CRC 64 /* CRC instruction */
60 #define T_BITCOUNT 128 /* BITCOUNT instruction */
61 #define T_FPTESTERR 256 /* FPTESTERR instruction */
62 #define T_DEBUG 512 /* Debug capabilities */
63
64 #define TRANSPUTER_CPU_TYPE_DEFS { \
65 { "T212", 16, 2048, 0 }, \
66 { "T222", 16, 4096, 0 }, \
67 { "T225", 16, 4096, T_DUP | T_WSUBDB | T_CRC | T_BITCOUNT | \
68 T_DEBUG }, \
69 { "T414", 32, 2048, T_FMUL | T_T4_FP }, \
70 { "T425", 32, 4096, T_T4_FP | T_2D_BLOCK | T_FMUL | T_WSUBDB | \
71 T_DUP | T_CRC | T_BITCOUNT | T_FPTESTERR | \
72 T_DEBUG }, \
73 { "T800", 32, 4096, T_T8_FP | T_2D_BLOCK | T_FMUL | T_WSUBDB | \
74 T_DUP | T_CRC | T_BITCOUNT | T_FPTESTERR }, \
75 { "T801", 32, 4096, T_T8_FP | T_2D_BLOCK | T_FMUL | T_WSUBDB | \
76 T_DUP | T_CRC | T_BITCOUNT | T_FPTESTERR }, \
77 { "T805", 32, 4096, T_T8_FP | T_2D_BLOCK | T_FMUL | T_WSUBDB | \
78 T_DUP | T_CRC | T_BITCOUNT | T_FPTESTERR | \
79 T_DEBUG }, \
80 { NULL, 0, 0, 0 } }
81
82 #define TRANSPUTER_INSTRUCTIONS { \
83 /* 0X */ "j", /* jump */ \
84 /* 1X */ "ldlp", /* load local pointer */ \
85 /* 2X */ "pfix", /* prefix */ \
86 /* 3X */ "ldnl", /* load non-local */ \
87 /* 4X */ "ldc", /* load constant */ \
88 /* 5X */ "ldnlp", /* load non-local pointer */ \
89 /* 6X */ "nfix", /* negative prefix */ \
90 /* 7X */ "ldl", /* load local */ \
91 /* 8X */ "adc", /* add constant */ \
92 /* 9X */ "call", /* call subroutine */ \
93 /* AX */ "cj", /* conditional jump */ \
94 /* BX */ "ajw", /* adjust workspace */ \
95 /* CX */ "eqc", /* equals constant */ \
96 /* DX */ "stl", /* store local */ \
97 /* EX */ "stnl", /* store non-local */ \
98 /* FX */ "opr" /* operate */ }
99
100
101 #define TRANSPUTER_N_IC_ARGS 1
102 #define TRANSPUTER_INSTR_ALIGNMENT_SHIFT 0
103 #define TRANSPUTER_IC_ENTRIES_SHIFT 12
104 #define TRANSPUTER_IC_ENTRIES_PER_PAGE (1 << TRANSPUTER_IC_ENTRIES_SHIFT)
105 #define TRANSPUTER_PC_TO_IC_ENTRY(a) (((a)>>TRANSPUTER_INSTR_ALIGNMENT_SHIFT) \
106 & (TRANSPUTER_IC_ENTRIES_PER_PAGE-1))
107 #define TRANSPUTER_ADDR_TO_PAGENR(a) ((a) >> (TRANSPUTER_IC_ENTRIES_SHIFT \
108 + TRANSPUTER_INSTR_ALIGNMENT_SHIFT))
109
110 DYNTRANS_MISC_DECLARATIONS(transputer,TRANSPUTER,uint32_t)
111
112 #define TRANSPUTER_MAX_VPH_TLB_ENTRIES 128
113
114
115 struct transputer_cpu {
116 struct transputer_cpu_type_def cpu_type;
117
118 uint32_t a, b, c; /* GPRs */
119 uint32_t wptr; /* Workspace/stack pointer */
120 uint32_t oreg; /* Operand register */
121
122 uint64_t fa, fb, fc; /* Floating point registers */
123
124 int error;
125 int halt_on_error;
126 int fp_error;
127
128 /*
129 * Instruction translation cache and 32-bit virtual -> physical ->
130 * host address translation:
131 */
132 DYNTRANS_ITC(transputer)
133 VPH_TLBS(transputer,TRANSPUTER)
134 VPH32(transputer,TRANSPUTER,uint32_t,uint8_t)
135 };
136
137
138 /* cpu_transputer.c: */
139 int transputer_run_instr(struct cpu *cpu);
140 void transputer_update_translation_table(struct cpu *cpu, uint64_t vaddr_page,
141 unsigned char *host_page, int writeflag, uint64_t paddr_page);
142 void transputer_invalidate_translation_caches(struct cpu *cpu, uint64_t, int);
143 void transputer_invalidate_code_translation(struct cpu *cpu, uint64_t, int);
144 int transputer_memory_rw(struct cpu *cpu, struct memory *mem, uint64_t vaddr,
145 unsigned char *data, size_t len, int writeflag, int cache_flags);
146 int transputer_cpu_family_init(struct cpu_family *);
147
148
149 #endif /* CPU_TRANSPUTER_H */

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