7ff4264847
* s390-mkopc.c (insertExpandedMnemonic): Expand string sizes of local variables used for mnemonic parsing: prefix, suffix and number.
399 lines
11 KiB
C
399 lines
11 KiB
C
/* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
|
|
Copyright 2000, 2001, 2003, 2007, 2008 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>
|
|
|
|
/* 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
|
|
};
|
|
|
|
struct op_struct
|
|
{
|
|
char opcode[16];
|
|
char mnemonic[16];
|
|
char format[16];
|
|
int mode_bits;
|
|
int min_cpu;
|
|
|
|
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)
|
|
{
|
|
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;
|
|
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"
|
|
" 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].mode_bits);
|
|
printf ("%i}", op_array[ix].min_cpu);
|
|
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 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 %15s",
|
|
opcode, mnemonic, format, description,
|
|
cpu_string, modes_string) == 6)
|
|
{
|
|
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 {
|
|
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);
|
|
}
|
|
|
|
dumpTable ();
|
|
return 0;
|
|
}
|