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/* Some helpful utility functions for gpasm
Copyright (C) 1998 James Bowman
This file is part of gpasm.
gpasm 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, or (at your option)
any later version.
gpasm 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 gpasm; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "stdhdr.h"
#include "gpasm.h"
#include "gperror.h"
#include "symbol.h"
/*
* Parse a numeric constant
*/
int gpasm_number(char *s)
{
char *endptr;
int r;
switch (tolower(s[0])) {
case 'd':
r = strtol(s + 2, &endptr, 10);
break;
case 'h':
r = strtol(s + 2, &endptr, 16);
break;
case 'o':
r = strtol(s + 2, &endptr, 8);
break;
case 'b':
r = strtol(s + 2, &endptr, 2);
break;
default:
assert(0); /* This should have been caught in the lexical stage */
}
/* Check that the number was OK */
if (*endptr != '\'') {
char complaint[80];
sprintf(complaint,
isprint(*endptr) ?
"Illegal character '%c' in numeric constant" :
"Illegal character %#x in numeric constant",
*endptr);
gperror(113, complaint);
}
return r;
}
void set_global(char *name, gpasmVal value)
{
struct symbol *sym;
struct variable *var;
/* Search the entire stack (i.e. include macro's local symbol
tables) for the symbol. If not found, then add it to the global
symbol table. */
sym = get_symbol(state.stTop, name);
if (sym == NULL)
sym = add_symbol(state.stGlobal, name);
var = get_symbol_annotation(sym);
if (var == NULL) {
var = malloc(sizeof(*var));
annotate_symbol(sym, var);
var->value = value;
} else {
if ((state.pass == 2) &&
(var->value != value)) {
char message[BUFSIZ];
sprintf(message,
"Value of symbol \"%s\" differs on second pass",
name);
gperror(114, message);
}
}
}
void select_radix(char *radix_name)
{
if (strcasecmp(radix_name, "hex") == 0)
state.radix = 16;
else if (strcasecmp(radix_name, "dec") == 0)
state.radix = 10;
else if (strcasecmp(radix_name, "oct") == 0)
state.radix = 8;
else {
gperror(123, "Unrecognized radix");
}
}
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