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., 59 Temple Place - Suite 330, Boston, MA
26 /* Taken from opcodes/s390.h */
27 enum s390_opcode_mode_val
33 enum s390_opcode_cpu_val
49 unsigned long long sort_value;
53 struct op_struct *op_array;
61 op_array = malloc (max_ops * sizeof (struct op_struct));
65 /* `insertOpcode': insert an op_struct into sorted opcode array. */
68 insertOpcode (char *opcode, char *mnemonic, char *format,
69 int min_cpu, int mode_bits)
72 unsigned long long sort_value;
76 while (no_ops >= max_ops)
78 max_ops = max_ops * 2;
79 op_array = realloc (op_array, max_ops * sizeof (struct op_struct));
84 for (ix = 0; ix < 16; ix++)
86 if (*str >= '0' && *str <= '9')
87 sort_value = (sort_value << 4) + (*str - '0');
88 else if (*str >= 'a' && *str <= 'f')
89 sort_value = (sort_value << 4) + (*str - 'a' + 10);
90 else if (*str >= 'A' && *str <= 'F')
91 sort_value = (sort_value << 4) + (*str - 'A' + 10);
98 sort_value <<= 4*(16 - ix);
99 sort_value += (min_cpu << 8) + mode_bits;
101 for (ix = 0; ix < no_ops; ix++)
102 if (sort_value > op_array[ix].sort_value)
104 for (k = no_ops; k > ix; k--)
105 op_array[k] = op_array[k-1];
106 strcpy(op_array[ix].opcode, opcode);
107 strcpy(op_array[ix].mnemonic, mnemonic);
108 strcpy(op_array[ix].format, format);
109 op_array[ix].sort_value = sort_value;
110 op_array[ix].no_nibbles = no_nibbles;
111 op_array[ix].min_cpu = min_cpu;
112 op_array[ix].mode_bits = mode_bits;
116 static char file_header[] =
117 "/* The opcode table. This file was generated by s390-mkopc.\n\n"
118 " The format of the opcode table is:\n\n"
119 " NAME OPCODE MASK OPERANDS\n\n"
120 " Name is the name of the instruction.\n"
121 " OPCODE is the instruction opcode.\n"
122 " MASK is the opcode mask; this is used to tell the disassembler\n"
123 " which bits in the actual opcode must match OPCODE.\n"
124 " OPERANDS is the list of operands.\n\n"
125 " The disassembler reads the table in order and prints the first\n"
126 " instruction which matches. */\n\n"
127 "const struct s390_opcode s390_opcodes[] =\n {\n";
129 /* `dumpTable': write opcode table. */
137 /* Write hash table entries (slots). */
138 printf (file_header);
140 for (ix = 0; ix < no_ops; ix++)
142 printf (" { \"%s\", ", op_array[ix].mnemonic);
143 for (str = op_array[ix].opcode; *str != 0; str++)
146 printf ("OP%i(0x%sLL), ",
147 op_array[ix].no_nibbles*4, op_array[ix].opcode);
148 printf ("MASK_%s, INSTR_%s, ",
149 op_array[ix].format, op_array[ix].format);
150 printf ("%i, ", op_array[ix].mode_bits);
151 printf ("%i}", op_array[ix].min_cpu);
158 printf ("const int s390_num_opcodes =\n");
159 printf (" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
165 char currentLine[256];
169 /* Read opcode descriptions from `stdin'. For each mnemonic,
170 make an entry into the opcode table. */
171 while (fgets (currentLine, sizeof (currentLine), stdin) != NULL)
176 char description[64];
178 char modes_string[16];
183 if (currentLine[0] == '#')
185 memset (opcode, 0, 8);
186 if (sscanf (currentLine, "%15s %15s %15s \"%[^\"]\" %15s %15s",
187 opcode, mnemonic, format, description,
188 cpu_string, modes_string) == 6)
190 if (strcmp (cpu_string, "g5") == 0)
191 min_cpu = S390_OPCODE_G5;
192 else if (strcmp (cpu_string, "g6") == 0)
193 min_cpu = S390_OPCODE_G6;
194 else if (strcmp (cpu_string, "z900") == 0)
195 min_cpu = S390_OPCODE_Z900;
196 else if (strcmp (cpu_string, "z990") == 0)
197 min_cpu = S390_OPCODE_Z990;
199 fprintf (stderr, "Couldn't parse cpu string %s\n", cpu_string);
206 if (strncmp (str, "esa", 3) == 0
207 && (str[3] == 0 || str[3] == ',')) {
208 mode_bits |= 1 << S390_OPCODE_ESA;
210 } else if (strncmp (str, "zarch", 5) == 0
211 && (str[5] == 0 || str[5] == ',')) {
212 mode_bits |= 1 << S390_OPCODE_ZARCH;
215 fprintf (stderr, "Couldn't parse modes string %s\n",
222 insertOpcode (opcode, mnemonic, format, min_cpu, mode_bits);
225 fprintf (stderr, "Couldn't scan line %s\n", currentLine);