| /* s390-mkopc.c -- Generates opcode table out of s390-opc.txt |
| Copyright (C) 2000-2021 Free Software Foundation, Inc. |
| Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
| |
| This file is part of the GNU opcodes library. |
| |
| This library 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 3, or (at your option) |
| any later version. |
| |
| It 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 file; see the file COPYING. If not, write to the |
| Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include "opcode/s390.h" |
| |
| struct op_struct |
| { |
| char opcode[16]; |
| char mnemonic[16]; |
| char format[16]; |
| int mode_bits; |
| int min_cpu; |
| int flags; |
| |
| 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 min_cpu, int mode_bits, int flags) |
| { |
| 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); |
| sort_value += (min_cpu << 8) + mode_bits; |
| 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].min_cpu = min_cpu; |
| op_array[ix].mode_bits = mode_bits; |
| op_array[ix].flags = flags; |
| no_ops++; |
| } |
| |
| struct s390_cond_ext_format |
| { |
| char nibble; |
| char extension[4]; |
| }; |
| |
| /* The mnemonic extensions for conditional jumps used to replace |
| the '*' tag. */ |
| #define NUM_COND_EXTENSIONS 20 |
| const struct s390_cond_ext_format s390_cond_extensions[NUM_COND_EXTENSIONS] = |
| { { '1', "o" }, /* jump on overflow / if ones */ |
| { '2', "h" }, /* jump on A high */ |
| { '2', "p" }, /* jump on plus */ |
| { '3', "nle" }, /* jump on not low or equal */ |
| { '4', "l" }, /* jump on A low */ |
| { '4', "m" }, /* jump on minus / if mixed */ |
| { '5', "nhe" }, /* jump on not high or equal */ |
| { '6', "lh" }, /* jump on low or high */ |
| { '7', "ne" }, /* jump on A not equal B */ |
| { '7', "nz" }, /* jump on not zero / if not zeros */ |
| { '8', "e" }, /* jump on A equal B */ |
| { '8', "z" }, /* jump on zero / if zeros */ |
| { '9', "nlh" }, /* jump on not low or high */ |
| { 'a', "he" }, /* jump on high or equal */ |
| { 'b', "nl" }, /* jump on A not low */ |
| { 'b', "nm" }, /* jump on not minus / if not mixed */ |
| { 'c', "le" }, /* jump on low or equal */ |
| { 'd', "nh" }, /* jump on A not high */ |
| { 'd', "np" }, /* jump on not plus */ |
| { 'e', "no" }, /* jump on not overflow / if not ones */ |
| }; |
| |
| /* The mnemonic extensions for conditional branches used to replace |
| the '$' tag. */ |
| #define NUM_CRB_EXTENSIONS 12 |
| const struct s390_cond_ext_format s390_crb_extensions[NUM_CRB_EXTENSIONS] = |
| { { '2', "h" }, /* jump on A high */ |
| { '2', "nle" }, /* jump on not low or equal */ |
| { '4', "l" }, /* jump on A low */ |
| { '4', "nhe" }, /* jump on not high or equal */ |
| { '6', "ne" }, /* jump on A not equal B */ |
| { '6', "lh" }, /* jump on low or high */ |
| { '8', "e" }, /* jump on A equal B */ |
| { '8', "nlh" }, /* jump on not low or high */ |
| { 'a', "nl" }, /* jump on A not low */ |
| { 'a', "he" }, /* jump on high or equal */ |
| { 'c', "nh" }, /* jump on A not high */ |
| { 'c', "le" }, /* jump on low or equal */ |
| }; |
| |
| /* As with insertOpcode instructions are added to the sorted opcode |
| array. Additionally mnemonics containing the '*<number>' tag are |
| expanded to the set of conditional instructions described by |
| s390_cond_extensions with the tag replaced by the respective |
| mnemonic extensions. */ |
| |
| static void |
| insertExpandedMnemonic (char *opcode, char *mnemonic, char *format, |
| int min_cpu, int mode_bits, int flags) |
| { |
| char *tag; |
| char prefix[15]; |
| char suffix[15]; |
| char number[15]; |
| int mask_start, i = 0, tag_found = 0, reading_number = 0; |
| int number_p = 0, suffix_p = 0, prefix_p = 0; |
| const struct s390_cond_ext_format *ext_table; |
| int ext_table_length; |
| |
| if (!(tag = strpbrk (mnemonic, "*$"))) |
| { |
| insertOpcode (opcode, mnemonic, format, min_cpu, mode_bits, flags); |
| return; |
| } |
| |
| while (mnemonic[i] != '\0') |
| { |
| if (mnemonic[i] == *tag) |
| { |
| if (tag_found) |
| goto malformed_mnemonic; |
| |
| tag_found = 1; |
| reading_number = 1; |
| } |
| else |
| switch (mnemonic[i]) |
| { |
| case '0': case '1': case '2': case '3': case '4': |
| case '5': case '6': case '7': case '8': case '9': |
| if (!tag_found || !reading_number) |
| goto malformed_mnemonic; |
| |
| number[number_p++] = mnemonic[i]; |
| break; |
| |
| default: |
| if (reading_number) |
| { |
| if (!number_p) |
| goto malformed_mnemonic; |
| else |
| reading_number = 0; |
| } |
| |
| if (tag_found) |
| suffix[suffix_p++] = mnemonic[i]; |
| else |
| prefix[prefix_p++] = mnemonic[i]; |
| } |
| i++; |
| } |
| |
| prefix[prefix_p] = '\0'; |
| suffix[suffix_p] = '\0'; |
| number[number_p] = '\0'; |
| |
| if (sscanf (number, "%d", &mask_start) != 1) |
| goto malformed_mnemonic; |
| |
| if (mask_start & 3) |
| { |
| fprintf (stderr, "Conditional mask not at nibble boundary in: %s\n", |
| mnemonic); |
| return; |
| } |
| |
| mask_start >>= 2; |
| |
| switch (*tag) |
| { |
| case '*': |
| ext_table = s390_cond_extensions; |
| ext_table_length = NUM_COND_EXTENSIONS; |
| break; |
| case '$': |
| ext_table = s390_crb_extensions; |
| ext_table_length = NUM_CRB_EXTENSIONS; |
| break; |
| default: |
| abort (); /* Should be unreachable. */ |
| } |
| |
| for (i = 0; i < ext_table_length; i++) |
| { |
| char new_mnemonic[15]; |
| |
| strcpy (new_mnemonic, prefix); |
| opcode[mask_start] = ext_table[i].nibble; |
| strcat (new_mnemonic, ext_table[i].extension); |
| strcat (new_mnemonic, suffix); |
| insertOpcode (opcode, new_mnemonic, format, min_cpu, mode_bits, flags); |
| } |
| return; |
| |
| malformed_mnemonic: |
| fprintf (stderr, "Malformed mnemonic: %s\n", mnemonic); |
| } |
| |
| static const 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" |
| " MODE_BITS - zarch or esa\n" |
| " MIN_CPU - number of the min cpu level required\n" |
| " FLAGS - instruction flags. */\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 ("%s", 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].mode_bits); |
| printf ("%i, ", op_array[ix].min_cpu); |
| printf ("%i}", op_array[ix].flags); |
| 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[80]; |
| char cpu_string[16]; |
| char modes_string[16]; |
| char flags_string[80]; |
| int min_cpu; |
| int mode_bits; |
| int flag_bits; |
| int num_matched; |
| char *str; |
| |
| if (currentLine[0] == '#' || currentLine[0] == '\n') |
| continue; |
| memset (opcode, 0, 8); |
| num_matched = |
| sscanf (currentLine, "%15s %15s %15s \"%79[^\"]\" %15s %15s %79[^\n]", |
| opcode, mnemonic, format, description, |
| cpu_string, modes_string, flags_string); |
| if (num_matched != 6 && num_matched != 7) |
| { |
| fprintf (stderr, "Couldn't scan line %s\n", currentLine); |
| exit (1); |
| } |
| |
| if (strcmp (cpu_string, "g5") == 0 |
| || strcmp (cpu_string, "arch3") == 0) |
| min_cpu = S390_OPCODE_G5; |
| else if (strcmp (cpu_string, "g6") == 0) |
| min_cpu = S390_OPCODE_G6; |
| else if (strcmp (cpu_string, "z900") == 0 |
| || strcmp (cpu_string, "arch5") == 0) |
| min_cpu = S390_OPCODE_Z900; |
| else if (strcmp (cpu_string, "z990") == 0 |
| || strcmp (cpu_string, "arch6") == 0) |
| min_cpu = S390_OPCODE_Z990; |
| else if (strcmp (cpu_string, "z9-109") == 0) |
| min_cpu = S390_OPCODE_Z9_109; |
| else if (strcmp (cpu_string, "z9-ec") == 0 |
| || strcmp (cpu_string, "arch7") == 0) |
| min_cpu = S390_OPCODE_Z9_EC; |
| else if (strcmp (cpu_string, "z10") == 0 |
| || strcmp (cpu_string, "arch8") == 0) |
| min_cpu = S390_OPCODE_Z10; |
| else if (strcmp (cpu_string, "z196") == 0 |
| || strcmp (cpu_string, "arch9") == 0) |
| min_cpu = S390_OPCODE_Z196; |
| else if (strcmp (cpu_string, "zEC12") == 0 |
| || strcmp (cpu_string, "arch10") == 0) |
| min_cpu = S390_OPCODE_ZEC12; |
| else if (strcmp (cpu_string, "z13") == 0 |
| || strcmp (cpu_string, "arch11") == 0) |
| min_cpu = S390_OPCODE_Z13; |
| else if (strcmp (cpu_string, "z14") == 0 |
| || strcmp (cpu_string, "arch12") == 0) |
| min_cpu = S390_OPCODE_ARCH12; |
| else if (strcmp (cpu_string, "z15") == 0 |
| || strcmp (cpu_string, "arch13") == 0) |
| min_cpu = S390_OPCODE_ARCH13; |
| else if (strcmp (cpu_string, "arch14") == 0) |
| min_cpu = S390_OPCODE_ARCH14; |
| else { |
| fprintf (stderr, "Couldn't parse cpu string %s\n", cpu_string); |
| exit (1); |
| } |
| |
| str = modes_string; |
| mode_bits = 0; |
| do { |
| if (strncmp (str, "esa", 3) == 0 |
| && (str[3] == 0 || str[3] == ',')) { |
| mode_bits |= 1 << S390_OPCODE_ESA; |
| str += 3; |
| } else if (strncmp (str, "zarch", 5) == 0 |
| && (str[5] == 0 || str[5] == ',')) { |
| mode_bits |= 1 << S390_OPCODE_ZARCH; |
| str += 5; |
| } else { |
| fprintf (stderr, "Couldn't parse modes string %s\n", |
| modes_string); |
| exit (1); |
| } |
| if (*str == ',') |
| str++; |
| } while (*str != 0); |
| |
| flag_bits = 0; |
| |
| if (num_matched == 7) |
| { |
| str = flags_string; |
| do { |
| if (strncmp (str, "optparm", 7) == 0 |
| && (str[7] == 0 || str[7] == ',')) { |
| flag_bits |= S390_INSTR_FLAG_OPTPARM; |
| str += 7; |
| } else if (strncmp (str, "optparm2", 8) == 0 |
| && (str[8] == 0 || str[8] == ',')) { |
| flag_bits |= S390_INSTR_FLAG_OPTPARM2; |
| str += 8; |
| } else if (strncmp (str, "htm", 3) == 0 |
| && (str[3] == 0 || str[3] == ',')) { |
| flag_bits |= S390_INSTR_FLAG_HTM; |
| str += 3; |
| } else if (strncmp (str, "vx", 2) == 0 |
| && (str[2] == 0 || str[2] == ',')) { |
| flag_bits |= S390_INSTR_FLAG_VX; |
| str += 2; |
| } else { |
| fprintf (stderr, "Couldn't parse flags string %s\n", |
| flags_string); |
| exit (1); |
| } |
| if (*str == ',') |
| str++; |
| } while (*str != 0); |
| } |
| insertExpandedMnemonic (opcode, mnemonic, format, min_cpu, mode_bits, flag_bits); |
| } |
| |
| dumpTable (); |
| return 0; |
| } |