1 /* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
2 Copyright 2000, 2001, 2003 Free Software Foundation, Inc.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
5 This file is part of GDB, GAS, and the GNU binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
26 /* Taken from opcodes/s390.h */
27 enum s390_opcode_mode_val
33 enum s390_opcode_cpu_val
50 unsigned long long sort_value;
54 struct op_struct *op_array;
62 op_array = malloc (max_ops * sizeof (struct op_struct));
66 /* `insertOpcode': insert an op_struct into sorted opcode array. */
69 insertOpcode (char *opcode, char *mnemonic, char *format,
70 int min_cpu, int mode_bits)
73 unsigned long long sort_value;
77 while (no_ops >= max_ops)
79 max_ops = max_ops * 2;
80 op_array = realloc (op_array, max_ops * sizeof (struct op_struct));
85 for (ix = 0; ix < 16; ix++)
87 if (*str >= '0' && *str <= '9')
88 sort_value = (sort_value << 4) + (*str - '0');
89 else if (*str >= 'a' && *str <= 'f')
90 sort_value = (sort_value << 4) + (*str - 'a' + 10);
91 else if (*str >= 'A' && *str <= 'F')
92 sort_value = (sort_value << 4) + (*str - 'A' + 10);
99 sort_value <<= 4*(16 - ix);
100 sort_value += (min_cpu << 8) + mode_bits;
102 for (ix = 0; ix < no_ops; ix++)
103 if (sort_value > op_array[ix].sort_value)
105 for (k = no_ops; k > ix; k--)
106 op_array[k] = op_array[k-1];
107 strcpy(op_array[ix].opcode, opcode);
108 strcpy(op_array[ix].mnemonic, mnemonic);
109 strcpy(op_array[ix].format, format);
110 op_array[ix].sort_value = sort_value;
111 op_array[ix].no_nibbles = no_nibbles;
112 op_array[ix].min_cpu = min_cpu;
113 op_array[ix].mode_bits = mode_bits;
117 static char file_header[] =
118 "/* The opcode table. This file was generated by s390-mkopc.\n\n"
119 " The format of the opcode table is:\n\n"
120 " NAME OPCODE MASK OPERANDS\n\n"
121 " Name is the name of the instruction.\n"
122 " OPCODE is the instruction opcode.\n"
123 " MASK is the opcode mask; this is used to tell the disassembler\n"
124 " which bits in the actual opcode must match OPCODE.\n"
125 " OPERANDS is the list of operands.\n\n"
126 " The disassembler reads the table in order and prints the first\n"
127 " instruction which matches. */\n\n"
128 "const struct s390_opcode s390_opcodes[] =\n {\n";
130 /* `dumpTable': write opcode table. */
138 /* Write hash table entries (slots). */
139 printf (file_header);
141 for (ix = 0; ix < no_ops; ix++)
143 printf (" { \"%s\", ", op_array[ix].mnemonic);
144 for (str = op_array[ix].opcode; *str != 0; str++)
147 printf ("OP%i(0x%sLL), ",
148 op_array[ix].no_nibbles*4, op_array[ix].opcode);
149 printf ("MASK_%s, INSTR_%s, ",
150 op_array[ix].format, op_array[ix].format);
151 printf ("%i, ", op_array[ix].mode_bits);
152 printf ("%i}", op_array[ix].min_cpu);
159 printf ("const int s390_num_opcodes =\n");
160 printf (" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
166 char currentLine[256];
170 /* Read opcode descriptions from `stdin'. For each mnemonic,
171 make an entry into the opcode table. */
172 while (fgets (currentLine, sizeof (currentLine), stdin) != NULL)
177 char description[64];
179 char modes_string[16];
184 if (currentLine[0] == '#')
186 memset (opcode, 0, 8);
187 if (sscanf (currentLine, "%15s %15s %15s \"%[^\"]\" %15s %15s",
188 opcode, mnemonic, format, description,
189 cpu_string, modes_string) == 6)
191 if (strcmp (cpu_string, "g5") == 0)
192 min_cpu = S390_OPCODE_G5;
193 else if (strcmp (cpu_string, "g6") == 0)
194 min_cpu = S390_OPCODE_G6;
195 else if (strcmp (cpu_string, "z900") == 0)
196 min_cpu = S390_OPCODE_Z900;
197 else if (strcmp (cpu_string, "z990") == 0)
198 min_cpu = S390_OPCODE_Z990;
199 else if (strcmp (cpu_string, "z9-109") == 0)
200 min_cpu = S390_OPCODE_Z9_109;
202 fprintf (stderr, "Couldn't parse cpu string %s\n", cpu_string);
209 if (strncmp (str, "esa", 3) == 0
210 && (str[3] == 0 || str[3] == ',')) {
211 mode_bits |= 1 << S390_OPCODE_ESA;
213 } else if (strncmp (str, "zarch", 5) == 0
214 && (str[5] == 0 || str[5] == ',')) {
215 mode_bits |= 1 << S390_OPCODE_ZARCH;
218 fprintf (stderr, "Couldn't parse modes string %s\n",
225 insertOpcode (opcode, mnemonic, format, min_cpu, mode_bits);
228 fprintf (stderr, "Couldn't scan line %s\n", currentLine);