1 /* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
2 Copyright 2000, 2001 Free Software Foundation, Inc.
3 Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
5 This file is part of GDB, GAS, and the GNU binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 /* ARCHBITS_ESA and ARCH_ESAME correspond to the bit numbers defined
27 by s390_opcode_arch_val in include/opcode/s390.h:
28 ARCHBITS_ESAONLY = (1<<S390_OPCODE_ESA)
29 ARCHBITS_ESA = (1<<S390_OPCODE_ESA) + (1<<S390_OPCODE_ESAME)
30 ARCHBITS_ESA = (1<<S390_OPCODE_ESAME). */
31 #define ARCHBITS_ESAONLY 1
32 #define ARCHBITS_ESA 3
33 #define ARCHBITS_ESAME 2
41 unsigned long long sort_value
;
45 struct op_struct
*op_array
;
53 op_array
= malloc (max_ops
* sizeof (struct op_struct
));
57 /* `insertOpcode': insert an op_struct into sorted opcode array. */
60 insertOpcode (char *opcode
, char *mnemonic
, char *format
, int archbits
)
63 unsigned long long sort_value
;
67 while (no_ops
>= max_ops
)
69 max_ops
= max_ops
* 2;
70 op_array
= realloc (op_array
, max_ops
* sizeof (struct op_struct
));
75 for (ix
= 0; ix
< 16; ix
++)
77 if (*str
>= '0' && *str
<= '9')
78 sort_value
= (sort_value
<< 4) + (*str
- '0');
79 else if (*str
>= 'a' && *str
<= 'f')
80 sort_value
= (sort_value
<< 4) + (*str
- 'a' + 10);
81 else if (*str
>= 'A' && *str
<= 'F')
82 sort_value
= (sort_value
<< 4) + (*str
- 'A' + 10);
89 sort_value
<<= 4*(16 - ix
);
91 for (ix
= 0; ix
< no_ops
; ix
++)
92 if (sort_value
> op_array
[ix
].sort_value
)
94 for (k
= no_ops
; k
> ix
; k
--)
95 op_array
[k
] = op_array
[k
-1];
96 strcpy(op_array
[ix
].opcode
, opcode
);
97 strcpy(op_array
[ix
].mnemonic
, mnemonic
);
98 strcpy(op_array
[ix
].format
, format
);
99 op_array
[ix
].sort_value
= sort_value
;
100 op_array
[ix
].no_nibbles
= no_nibbles
;
101 op_array
[ix
].archbits
= archbits
;
105 static char file_header
[] =
106 "/* The opcode table. This file was generated by s390-mkopc.\n\n"
107 " The format of the opcode table is:\n\n"
108 " NAME OPCODE MASK OPERANDS\n\n"
109 " Name is the name of the instruction.\n"
110 " OPCODE is the instruction opcode.\n"
111 " MASK is the opcode mask; this is used to tell the disassembler\n"
112 " which bits in the actual opcode must match OPCODE.\n"
113 " OPERANDS is the list of operands.\n\n"
114 " The disassembler reads the table in order and prints the first\n"
115 " instruction which matches. */\n\n"
116 "const struct s390_opcode s390_opcodes[] =\n {\n";
118 /* `dumpTable': write opcode table. */
126 /* Write hash table entries (slots). */
127 printf (file_header
);
129 for (ix
= 0; ix
< no_ops
; ix
++)
131 printf (" { \"%s\", ", op_array
[ix
].mnemonic
);
132 for (str
= op_array
[ix
].opcode
; *str
!= 0; str
++)
135 printf ("OP%i(0x%sLL), ",
136 op_array
[ix
].no_nibbles
*4, op_array
[ix
].opcode
);
137 printf ("MASK_%s, INSTR_%s, ",
138 op_array
[ix
].format
, op_array
[ix
].format
);
139 printf ("%i}", op_array
[ix
].archbits
);
146 printf ("const int s390_num_opcodes =\n");
147 printf (" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
153 char currentLine
[256];
157 /* Read opcode descriptions from `stdin'. For each mnemonic,
158 make an entry into the opcode table. */
159 while (fgets (currentLine
, sizeof (currentLine
), stdin
) != NULL
)
164 char description
[64];
168 if (currentLine
[0] == '#')
170 memset (opcode
, 0, 8);
171 if (sscanf (currentLine
, "%15s %15s %15s \"%[^\"]\" %15s",
172 opcode
, mnemonic
, format
, description
, archtag
) == 5)
174 if (strcmp (archtag
, "esaonly") == 0)
175 archbits
= ARCHBITS_ESAONLY
;
176 else if (strcmp (archtag
, "esa") == 0)
177 archbits
= ARCHBITS_ESA
;
178 else if (strcmp (archtag
, "esame") == 0)
179 archbits
= ARCHBITS_ESAME
;
182 insertOpcode (opcode
, mnemonic
, format
, archbits
);
185 fprintf (stderr
, "Couldn't scan line %s\n", currentLine
);
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