1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
Copyright 2000, 2001 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
This file is part of GDB, GAS, and the GNU binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* ARCHBITS_ESA and ARCH_ESAME correspond to the bit numbers defined
by s390_opcode_arch_val in include/opcode/s390.h:
ARCHBITS_ESAONLY = (1<<S390_OPCODE_ESA)
ARCHBITS_ESA = (1<<S390_OPCODE_ESA) + (1<<S390_OPCODE_ESAME)
ARCHBITS_ESA = (1<<S390_OPCODE_ESAME). */
#define ARCHBITS_ESAONLY 1
#define ARCHBITS_ESA 3
#define ARCHBITS_ESAME 2
struct op_struct {
char opcode[16];
char mnemonic[16];
char format[16];
int archbits;
unsigned long long sort_value;
int no_nibbles;
};
struct op_struct *op_array;
int max_ops;
int no_ops;
static void
createTable(void)
{
max_ops = 256;
op_array = malloc(max_ops*sizeof(struct op_struct));
no_ops = 0;
}
/*
* `insertOpcode': insert an op_struct into sorted opcode array
*/
static void
insertOpcode(char *opcode, char *mnemonic, char *format, int archbits)
{
char *str;
unsigned long long sort_value;
int no_nibbles;
int ix, k;
while (no_ops >= max_ops) {
max_ops = max_ops*2;
op_array = realloc(op_array, max_ops*sizeof(struct op_struct));
}
sort_value = 0;
str = opcode;
for (ix = 0; ix < 16; ix++) {
if (*str >= '0' && *str <= '9')
sort_value = (sort_value << 4) + (*str - '0');
else if (*str >= 'a' && *str <= 'f')
sort_value = (sort_value << 4) + (*str - 'a' + 10);
else if (*str >= 'A' && *str <= 'F')
sort_value = (sort_value << 4) + (*str - 'A' + 10);
else if (*str == '?')
sort_value <<= 4;
else
break;
str++;
}
sort_value <<= 4*(16 - ix);
no_nibbles = ix;
for (ix = 0; ix < no_ops; ix++)
if (sort_value > op_array[ix].sort_value)
break;
for (k = no_ops; k > ix; k--)
op_array[k] = op_array[k-1];
strcpy(op_array[ix].opcode, opcode);
strcpy(op_array[ix].mnemonic, mnemonic);
strcpy(op_array[ix].format, format);
op_array[ix].sort_value = sort_value;
op_array[ix].no_nibbles = no_nibbles;
op_array[ix].archbits = archbits;
no_ops++;
}
/*
* `dumpTable': write opcode table
*/
static void
dumpTable(void)
{
char *str;
int ix;
/* Write hash table entries (slots). */
printf("const struct s390_opcode s390_opcodes[] = {\n");
for (ix = 0; ix < no_ops; ix++) {
printf(" { \"%s\", ", op_array[ix].mnemonic);
for (str = op_array[ix].opcode; *str != 0; str++)
if (*str == '?')
*str = '0';
printf("OP%i(0x%sLL), ",
op_array[ix].no_nibbles*4, op_array[ix].opcode);
printf("MASK_%s, INSTR_%s, ",
op_array[ix].format, op_array[ix].format);
printf("%i}", op_array[ix].archbits);
if (ix < no_ops-1)
printf(",\n");
else
printf("\n");
}
printf("};\n\n");
printf("const int s390_num_opcodes =\n");
printf(" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
}
int
main(void)
{
char currentLine[256];
createTable();
/* Read opcode descriptions from `stdin'. For each mnemonic,
* make an entry into the opcode table.
*/
while (fgets(currentLine, sizeof(currentLine), stdin) != NULL) {
char opcode[16];
char mnemonic[16];
char format[16];
char description[64];
char archtag[16];
int archbits;
if (currentLine[0] == '#')
continue;
memset(opcode, 0, 8);
if (sscanf(currentLine, "%15s %15s %15s \"%[^\"]\" %15s",
opcode, mnemonic, format, description, archtag) == 5) {
if (strcmp(archtag, "esaonly") == 0)
archbits = ARCHBITS_ESAONLY;
else if (strcmp(archtag, "esa") == 0)
archbits = ARCHBITS_ESA;
else if (strcmp(archtag, "esame") == 0)
archbits = ARCHBITS_ESAME;
else
archbits = 0;
insertOpcode(opcode, mnemonic, format, archbits);
} else
fprintf(stderr, "Couldn't scan line %s\n", currentLine);
}
dumpTable();
return 0;
}
|
