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-rw-r--r--opcodes/s390-mkopc.c172
1 files changed, 172 insertions, 0 deletions
diff --git a/opcodes/s390-mkopc.c b/opcodes/s390-mkopc.c
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+/* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
+ Copyright (C) 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;
+}