/[gxemul]/trunk/src/cpus/generate_head.c
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/cpus/generate_head.c

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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: 6172 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 /*
2 * Copyright (C) 2005-2006 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: generate_head.c,v 1.18 2006/07/20 21:53:00 debug Exp $
29 */
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35
36 /* NOTE: Static return buffer, so calling it multiple times in the
37 same printf statement with the same argument works :-) but not
38 with different args. Hahaha. Really ugly. */
39 char *uppercase(char *l)
40 {
41 static char staticbuf[1000];
42 size_t i = 0;
43
44 while (*l && i < sizeof(staticbuf)) {
45 char u = *l++;
46 if (u >= 'a' && u <= 'z')
47 u -= 32;
48 staticbuf[i++] = u;
49 }
50 if (i == sizeof(staticbuf))
51 i--;
52 staticbuf[i] = 0;
53 return staticbuf;
54 }
55
56
57 int main(int argc, char *argv[])
58 {
59 char *a, *b;
60
61 if (argc != 3) {
62 fprintf(stderr, "usage: %s arch Arch\n", argv[0]);
63 fprintf(stderr, "Example: %s alpha Alpha\n", argv[0]);
64 fprintf(stderr, " or: %s arm ARM\n", argv[0]);
65 exit(1);
66 }
67
68 a = argv[1];
69 b = argv[2];
70
71
72 printf("\n/* AUTOMATICALLY GENERATED! Do not edit. */\n\n");
73
74 printf("#include <assert.h>\n");
75 printf("#include \"debugger.h\"\n");
76
77 printf("#define DYNTRANS_MAX_VPH_TLB_ENTRIES "
78 "%s_MAX_VPH_TLB_ENTRIES\n", uppercase(a));
79 printf("#define DYNTRANS_ARCH %s\n", a);
80 printf("#define DYNTRANS_%s\n", uppercase(a));
81
82 /* For 64-bit platforms, arch_L2N, and arch_L3N must be defined. */
83 printf("#ifndef DYNTRANS_32\n");
84 printf("#define DYNTRANS_L2N %s_L2N\n"
85 "#define DYNTRANS_L3N %s_L3N\n"
86 "#if !defined(%s_L2N) || !defined(%s_L3N)\n"
87 "#error arch_L2N, and arch_L3N must be defined for this arch!\n"
88 "#endif\n",
89 uppercase(a), uppercase(a), uppercase(a), uppercase(a));
90 printf("#define DYNTRANS_L2_64_TABLE %s_l2_64_table\n"
91 "#define DYNTRANS_L3_64_TABLE %s_l3_64_table\n", a, a);
92 printf("#endif\n");
93
94 /* Default pagesize is 4KB. */
95 printf("#ifndef DYNTRANS_PAGESIZE\n"
96 "#define DYNTRANS_PAGESIZE 4096\n"
97 "#endif\n");
98
99 printf("#define DYNTRANS_IC %s_instr_call\n", a);
100 printf("#define DYNTRANS_IC_ENTRIES_PER_PAGE "
101 "%s_IC_ENTRIES_PER_PAGE\n", uppercase(a));
102 printf("#define DYNTRANS_INSTR_ALIGNMENT_SHIFT "
103 "%s_INSTR_ALIGNMENT_SHIFT\n", uppercase(a));
104 printf("#define DYNTRANS_TC_PHYSPAGE %s_tc_physpage\n", a);
105 printf("#define DYNTRANS_INVALIDATE_TLB_ENTRY "
106 "%s_invalidate_tlb_entry\n", a);
107 printf("#define DYNTRANS_ADDR_TO_PAGENR %s_ADDR_TO_PAGENR\n",
108 uppercase(a));
109 printf("#define DYNTRANS_PC_TO_IC_ENTRY %s_PC_TO_IC_ENTRY\n",
110 uppercase(a));
111 printf("#define DYNTRANS_TC_ALLOCATE "
112 "%s_tc_allocate_default_page\n", a);
113 printf("#define DYNTRANS_TC_PHYSPAGE %s_tc_physpage\n", a);
114 printf("#define DYNTRANS_PC_TO_POINTERS %s_pc_to_pointers\n", a);
115 printf("#define DYNTRANS_PC_TO_POINTERS_GENERIC "
116 "%s_pc_to_pointers_generic\n", a);
117 printf("#define COMBINE_INSTRUCTIONS %s_combine_instructions\n", a);
118 printf("#define DISASSEMBLE %s_cpu_disassemble_instr\n", a);
119
120 printf("\nextern volatile int single_step, single_step_breakpoint;"
121 "\nextern int debugger_n_steps_left_before_interaction;\n"
122 "extern int old_show_trace_tree;\n"
123 "extern int old_instruction_trace;\n"
124 "extern int old_quiet_mode;\n"
125 "extern int quiet_mode;\n");
126
127 printf("\n/* instr uses the same names as in "
128 "cpu_%s_instr.c */\n#define instr(n) %s_instr_ ## n\n\n", a, a);
129
130 printf("#ifdef DYNTRANS_DUALMODE_32\n"
131 "#define instr32(n) %s32_instr_ ## n\n\n", a);
132 printf("#endif\n\n");
133
134 printf("/* This is for marking a physical page as containing"
135 "\n combined instructions: */\n");
136 printf("#define combined (cpu->cd.%s.cur_physpage->flags "
137 "|= COMBINATIONS)\n", a);
138
139 printf("\n#define X(n) void %s_instr_ ## n(struct cpu *cpu, \\\n"
140 " struct %s_instr_call *ic)\n", a, a);
141
142 printf("\n/*\n * nothing: Do nothing.\n *\n"
143 " * The difference between this function and a \"nop\" "
144 "instruction is that\n * this function does not increase "
145 "the program counter or the number of\n * translated "
146 "instructions. It is used to \"get out\" of running in "
147 "translated\n * mode.\n *\n"
148 " * IMPORTANT NOTE: Do a cpu->running_translated = 0;\n"
149 " * before setting cpu->cd.%s.next_ic = "
150 "&nothing_call;\n */\n", a);
151 printf("X(nothing)\n{\n");
152 printf("\tcpu->n_translated_instrs --;\n");
153 printf("\tcpu->cd.%s.next_ic --;\n", a);
154 printf("}\n\n");
155
156 /* Ugly special hack for Transputer: */
157 if (strcasecmp(argv[1], "transputer") == 0) {
158 printf("static struct %s_instr_call nothing_call = { "
159 "instr(nothing), {0} };\n", a);
160 } else {
161 printf("static struct %s_instr_call nothing_call = { "
162 "instr(nothing), {0,0,0} };\n", a);
163 }
164
165 printf("\n");
166
167 return 0;
168 }

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