| /* 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++; |
| } |
| |
| static char file_header[] = |
| "/* The opcode table. This file was generated by s390-mkopc.\n\n" |
| " The format of the opcode table is:\n\n" |
| " NAME OPCODE MASK OPERANDS\n\n" |
| " Name is the name of the instruction.\n" |
| " OPCODE is the instruction opcode.\n" |
| " MASK is the opcode mask; this is used to tell the disassembler\n" |
| " which bits in the actual opcode must match OPCODE.\n" |
| " OPERANDS is the list of operands.\n\n" |
| " The disassembler reads the table in order and prints the first\n" |
| " instruction which matches. */\n\n" |
| "const struct s390_opcode s390_opcodes[] =\n {\n"; |
| |
| /* `dumpTable': write opcode table. */ |
| |
| static void |
| dumpTable (void) |
| { |
| char *str; |
| int ix; |
| |
| /* Write hash table entries (slots). */ |
| printf (file_header); |
| |
| 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; |
| } |