/* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
- Copyright 2000, 2001 Free Software Foundation, Inc.
+ Copyright 2000, 2001, 2003, 2005, 2007, 2008 Free Software Foundation, Inc.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
- This file is part of GDB, GAS, and the GNU binutils.
+ This file is part of the GNU opcodes library.
- This program is free software; you can redistribute it and/or modify
+ 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 2 of the License, or
- (at your option) any later version.
+ the Free Software Foundation; either version 3, 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.
+ 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 program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- 02111-1307, USA. */
+ 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>
-/* 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
+/* Taken from opcodes/s390.h */
+enum s390_opcode_mode_val
+ {
+ S390_OPCODE_ESA = 0,
+ S390_OPCODE_ZARCH
+ };
+
+enum s390_opcode_cpu_val
+ {
+ S390_OPCODE_G5 = 0,
+ S390_OPCODE_G6,
+ S390_OPCODE_Z900,
+ S390_OPCODE_Z990,
+ S390_OPCODE_Z9_109,
+ S390_OPCODE_Z9_EC,
+ S390_OPCODE_Z10,
+ S390_OPCODE_Z196
+ };
struct op_struct
{
char opcode[16];
char mnemonic[16];
char format[16];
- int archbits;
+ int mode_bits;
+ int min_cpu;
+
unsigned long long sort_value;
int no_nibbles;
};
/* `insertOpcode': insert an op_struct into sorted opcode array. */
static void
-insertOpcode (char *opcode, char *mnemonic, char *format, int archbits)
+insertOpcode (char *opcode, char *mnemonic, char *format,
+ int min_cpu, int mode_bits)
{
char *str;
unsigned long long sort_value;
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)
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;
+ op_array[ix].min_cpu = min_cpu;
+ op_array[ix].mode_bits = mode_bits;
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 '$' tag. */
+#define NUM_CRB_EXTENSIONS 12
+const struct s390_cond_ext_format s390_crb_extensions[NUM_CRB_EXTENSIONS] =
+{ { '2', "h" }, /* jump on A high */
+ { '2', "nle" }, /* jump on not low or equal */
+ { '4', "l" }, /* jump on A low */
+ { '4', "nhe" }, /* jump on not high or equal */
+ { '6', "ne" }, /* jump on A not equal B */
+ { '6', "lh" }, /* jump on low or high */
+ { '8', "e" }, /* jump on A equal B */
+ { '8', "nlh" }, /* jump on not low or high */
+ { 'a', "nl" }, /* jump on A not low */
+ { 'a', "he" }, /* jump on high or equal */
+ { 'c', "nh" }, /* jump on A not high */
+ { 'c', "le" }, /* jump on low or equal */
+};
+
+/* As with insertOpcode instructions are added to the sorted opcode
+ array. Additionally mnemonics containing the '*<number>' tag are
+ expanded to the set of conditional instructions described by
+ s390_cond_extensions with the tag replaced by the respective
+ mnemonic extensions. */
+
+static void
+insertExpandedMnemonic (char *opcode, char *mnemonic, char *format,
+ int min_cpu, int mode_bits)
+{
+ char *tag;
+ char prefix[15];
+ char suffix[15];
+ char number[15];
+ int mask_start, i = 0, tag_found = 0, reading_number = 0;
+ int number_p = 0, suffix_p = 0, prefix_p = 0;
+ const struct s390_cond_ext_format *ext_table;
+ int ext_table_length;
+
+ if (!(tag = strpbrk (mnemonic, "*$")))
+ {
+ insertOpcode (opcode, mnemonic, format, min_cpu, mode_bits);
+ 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: fprintf (stderr, "Unknown tag char: %c\n", *tag);
+ }
+
+ 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);
+ }
+ return;
+
+ malformed_mnemonic:
+ fprintf (stderr, "Malformed mnemonic: %s\n", mnemonic);
+}
+
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"
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);
+ printf ("%i, ", op_array[ix].mode_bits);
+ printf ("%i}", op_array[ix].min_cpu);
if (ix < no_ops-1)
printf (",\n");
else
char opcode[16];
char mnemonic[16];
char format[16];
- char description[64];
- char archtag[16];
- int archbits;
+ char description[80];
+ char cpu_string[16];
+ char modes_string[16];
+ int min_cpu;
+ int mode_bits;
+ char *str;
if (currentLine[0] == '#')
continue;
memset (opcode, 0, 8);
- if (sscanf (currentLine, "%15s %15s %15s \"%[^\"]\" %15s",
- opcode, mnemonic, format, description, archtag) == 5)
+ if (sscanf (currentLine, "%15s %15s %15s \"%79[^\"]\" %15s %15s",
+ opcode, mnemonic, format, description,
+ cpu_string, modes_string) == 6)
{
- 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);
+ if (strcmp (cpu_string, "g5") == 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)
+ min_cpu = S390_OPCODE_Z900;
+ else if (strcmp (cpu_string, "z990") == 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)
+ min_cpu = S390_OPCODE_Z9_EC;
+ else if (strcmp (cpu_string, "z10") == 0)
+ min_cpu = S390_OPCODE_Z10;
+ else if (strcmp (cpu_string, "z196") == 0)
+ min_cpu = S390_OPCODE_Z196;
+ 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);
+
+ insertExpandedMnemonic (opcode, mnemonic, format, min_cpu, mode_bits);
}
else
- fprintf (stderr, "Couldn't scan line %s\n", currentLine);
+ {
+ fprintf (stderr, "Couldn't scan line %s\n", currentLine);
+ exit (1);
+ }
}
dumpTable ();
projects / deliverable / binutils-gdb.git / blobdiff