diff options
Diffstat (limited to 'opcodes/s390-mkopc.c')
| -rw-r--r-- | opcodes/s390-mkopc.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/opcodes/s390-mkopc.c b/opcodes/s390-mkopc.c new file mode 100644 index 0000000..c290dec --- /dev/null +++ b/opcodes/s390-mkopc.c @@ -0,0 +1,172 @@ +/* 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; +} |