/[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 18 - (show annotations)
Mon Oct 8 16:19:11 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 5453 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1004 2005/10/27 14:01:10 debug Exp $
20051011        Passing -A as the default boot arg for CATS (works fine with
                OpenBSD/cats).
20051012	Fixing the VGA cursor offset bug, and speeding up framebuffer
		redraws if character cells contain the same thing as during
		the last redraw.
20051013	Adding a slow strd ARM instruction hack.
20051017	Minor updates: Adding a dummy i80321 Verde controller (for
		XScale emulation), fixing the disassembly of the ARM "ldrd"
		instruction, adding "support" for less-than-4KB pages for ARM
		(by not adding them to translation tables).
20051020	Continuing on some HPCarm stuff. A NetBSD/hpcarm kernel prints
		some boot messages on an emulated Jornada 720.
		Making dev_ram work better with dyntrans (speeds up some things
		quite a bit).
20051021	Automatically generating some of the most common ARM load/store
		multiple instructions.
20051022	Better statistics gathering for the ARM load/store multiple.
		Various other dyntrans and device updates.
20051023	Various minor updates.
20051024	Continuing; minor device and dyntrans fine-tuning. Adding the
		first "reasonable" instruction combination hacks for ARM (the
		cores of NetBSD/cats' memset and memcpy).
20051025	Fixing a dyntrans-related bug in dev_vga. Also changing the
		dyntrans low/high access notification to only be updated on
		writes, not reads. Hopefully it will be enough. (dev_vga in
		charcell mode now seems to work correctly with both reads and
		writes.)
		Experimenting with gathering dyntrans statistics (which parts
		of emulated RAM that are actually executed), and adding
		instruction combination hacks for cache cleaning and a part of
		NetBSD's scanc() function.
20051026	Adding a bitmap for ARM emulation which indicates if a page is
		(specifically) user accessible; loads and stores with the t-
		flag set can now use the translation arrays, which results in
		a measurable speedup.
20051027	Dyntrans updates; adding an extra bitmap array for 32-bit
		emulation modes, speeding up the check whether a physical page
		has any code translations or not (O(n) -> O(1)). Doing a
		similar reduction of O(n) to O(1) by avoiding the scan through
		the translation entries on a translation update (32-bit mode
		only).
		Various other minor hacks.
20051029	Quick release, without any testing at all.

==============  RELEASE 0.3.6.2  ==============


1 /*
2 * Copyright (C) 2005 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 1.7 2005/10/27 14:01:13 debug Exp $
29 */
30
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35
36 char *uppercase(char *l)
37 {
38 static char staticbuf[1000];
39 int i = 0;
40
41 while (*l && i < sizeof(staticbuf)) {
42 char u = *l++;
43 if (u >= 'a' && u <= 'z')
44 u -= 32;
45 staticbuf[i++] = u;
46 }
47 if (i == sizeof(staticbuf))
48 i--;
49 staticbuf[i] = 0;
50 return staticbuf;
51 }
52
53
54 int main(int argc, char *argv[])
55 {
56 char *a, *b;
57
58 if (argc != 3) {
59 fprintf(stderr, "usage: %s arch Arch\n", argv[0]);
60 fprintf(stderr, "Example: %s alpha Alpha\n", argv[0]);
61 fprintf(stderr, " or: %s arm ARM\n", argv[0]);
62 exit(1);
63 }
64
65 a = argv[1];
66 b = argv[2];
67
68 printf("\n/* AUTOMATICALLY GENERATED! Do not edit. */\n\n");
69
70 printf("#define DYNTRANS_MAX_VPH_TLB_ENTRIES "
71 "%s_MAX_VPH_TLB_ENTRIES\n", uppercase(a));
72 printf("#define DYNTRANS_ARCH %s\n", a);
73 printf("#define DYNTRANS_%s\n", uppercase(a));
74 printf("#ifdef DYNTRANS_32\n"
75 "#define DYNTRANS_1LEVEL\n"
76 "#endif\n");
77 printf("#ifndef DYNTRANS_PAGESIZE\n"
78 "#define DYNTRANS_PAGESIZE 4096\n"
79 "#endif\n");
80 printf("#define DYNTRANS_IC %s_instr_call\n", a);
81 printf("#define DYNTRANS_IC_ENTRIES_PER_PAGE "
82 "%s_IC_ENTRIES_PER_PAGE\n", uppercase(a));
83 printf("#define DYNTRANS_INSTR_ALIGNMENT_SHIFT "
84 "%s_INSTR_ALIGNMENT_SHIFT\n", uppercase(a));
85 printf("#define DYNTRANS_TC_PHYSPAGE %s_tc_physpage\n", a);
86 printf("#define DYNTRANS_INVALIDATE_TLB_ENTRY "
87 "%s_invalidate_tlb_entry\n", a);
88 printf("#define DYNTRANS_ADDR_TO_PAGENR %s_ADDR_TO_PAGENR\n",
89 uppercase(a));
90 printf("#define DYNTRANS_PC_TO_IC_ENTRY %s_PC_TO_IC_ENTRY\n",
91 uppercase(a));
92 printf("#define DYNTRANS_TC_ALLOCATE "
93 "%s_tc_allocate_default_page\n", a);
94 printf("#define DYNTRANS_TC_PHYSPAGE %s_tc_physpage\n", a);
95 printf("#define DYNTRANS_PC_TO_POINTERS %s_pc_to_pointers\n", a);
96 printf("#define DYNTRANS_PC_TO_POINTERS_GENERIC "
97 "%s_pc_to_pointers_generic\n", a);
98 printf("#define COMBINE_INSTRUCTIONS %s_combine_instructions\n", a);
99 printf("#define DISASSEMBLE %s_cpu_disassemble_instr\n", a);
100
101 printf("\nextern volatile int single_step, single_step_breakpoint;"
102 "\nextern int debugger_n_steps_left_before_interaction;\n"
103 "extern int old_show_trace_tree;\n"
104 "extern int old_instruction_trace;\n"
105 "extern int old_quiet_mode;\n"
106 "extern int show_opcode_statistics;\n"
107 "extern int quiet_mode;\n");
108
109 printf("\n/* instr uses the same names as in "
110 "cpu_%s_instr.c */\n#define instr(n) %s_instr_ ## n\n\n", a, a);
111
112 printf("#ifdef DYNTRANS_DUALMODE_32\n"
113 "#define instr32(n) %s32_instr_ ## n\n\n", a);
114 printf("#endif\n\n");
115
116 printf("/* This is for marking a physical page as containing"
117 "\n combined instructions: */\n");
118 printf("#define combined (cpu->cd.%s.cur_physpage->flags "
119 "|= COMBINATIONS)\n", a);
120
121 printf("\n#define X(n) void %s_instr_ ## n(struct cpu *cpu, \\\n"
122 " struct %s_instr_call *ic)\n", a, a);
123
124 printf("\n/*\n * nothing: Do nothing.\n *\n"
125 " * The difference between this function and a \"nop\" "
126 "instruction is that\n * this function does not increase "
127 "the program counter or the number of\n * translated "
128 "instructions. It is used to \"get out\" of running in "
129 "translated\n * mode.\n *\n"
130 " * IMPORTANT NOTE: Do a cpu->running_translated = 0;\n"
131 " * before setting cpu->cd.%s.next_ic = "
132 "&nothing_call;\n */\n", a);
133 printf("X(nothing)\n{\n");
134 printf("\tcpu->n_translated_instrs --;\n");
135 printf("\tcpu->cd.%s.next_ic --;\n", a);
136 printf("}\n\n");
137
138 /* TODO: solve this in a nicer way! */
139 if (strcmp(a, "avr") == 0)
140 printf("static struct %s_instr_call nothing_call = { "
141 "instr(nothing), {0,0} };\n", a);
142 else
143 printf("static struct %s_instr_call nothing_call = { "
144 "instr(nothing), {0,0,0} };\n", a);
145
146 printf("\n");
147
148 return 0;
149 }

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