/* s390-mkopc.c -- Generates opcode table out of s390-opc.txt
- Copyright (C) 2000, 2001 Free Software Foundation, Inc.
+ Copyright 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.
#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
+ {
+ 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)
+createTable (void)
{
- max_ops = 256;
- op_array = malloc(max_ops*sizeof(struct op_struct));
- no_ops = 0;
+ max_ops = 256;
+ op_array = malloc (max_ops * sizeof (struct op_struct));
+ no_ops = 0;
}
-/*
- * `insertOpcode': insert an op_struct into sorted opcode array
- */
+/* `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 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));
+ 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++) {
+
+ 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 <<= 4;
else
break;
- str++;
+ 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++;
+ 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++;
}
+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. */
-/*
- * `dumpTable': write opcode table
- */
static void
-dumpTable(void)
+dumpTable (void)
{
- char *str;
- int ix;
+ 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);
+ /* 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].archbits);
+ 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");
+ printf (",\n");
else
- printf("\n");
+ printf ("\n");
}
- printf("};\n\n");
- printf("const int s390_num_opcodes =\n");
- printf(" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
+ printf ("};\n\n");
+ printf ("const int s390_num_opcodes =\n");
+ printf (" sizeof (s390_opcodes) / sizeof (s390_opcodes[0]);\n\n");
}
-
int
-main(void)
+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 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];
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);
+ 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;
+ dumpTable ();
+ return 0;
}
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